951 results on '"Lan ZHENG"'
Search Results
2. Establishment of a dexamethasone-induced zebrafish skeletal muscle atrophy model and exploration of its mechanisms
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Chen-Chen Sun, Ye-Jun Li, Dan-Ting Zhu, Zhang-Lin Chen, Jiang-Ling Xiao, Xiang-Tao Chen, Lan Zheng, Xi-Yang Peng, and Chang-Fa Tang
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Skeletal muscle atrophy ,Zebrafish ,Dexamethasone ,Mitochondrial dysfunction ,Endoplasmic reticulum stress ,Medicine ,Biology (General) ,QH301-705.5 - Abstract
Background: Skeletal muscle atrophy is one of the main side effects of high-dose or continuous use of glucocorticoids (such as dexamethasone). However, there are limited studies on dexamethasone-induced skeletal muscle atrophy in zebrafish and even fewer explorations of the underlying molecular mechanisms. This study aimed to construct a model of dexamethasone-induced skeletal muscle atrophy in zebrafish and to investigate the molecular mechanisms. Methods: Zebrafish soaked in 0.01 % dexamethasone solution for 10 days. Loli Track (Denmark) and Loligo Swimming Respirometer were used to observe the effect of dexamethasone on swimming ability. The effects of dexamethasone on zebrafish skeletal muscle were observed by Transmission electron microscopy, H&E, and wheat germ agglutinin techniques. Enriched genes and signaling pathways were analyzed using Transcriptome sequencing. Further, the levels of mitochondrial and endoplasmic reticulum-related proteins were examined to investigate possible mechanisms. Results: 0.01 % dexamethasone reduced zebrafish skeletal muscle mass (p
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- 2024
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3. Development of an MRI based artificial intelligence model for the identification of underlying atrial fibrillation after ischemic stroke: a multicenter proof-of-concept analysisResearch in context
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Zijie Zhang, Yang Ding, Kaibin Lin, Wenli Ban, Luyue Ding, Yudong Sun, Chuanliang Fu, Yihang Ren, Can Han, Xue Zhang, Xiaoer Wei, Shundong Hu, Yuwu Zhao, Li Cao, Jun Wang, Saman Nazarian, Ying Cao, Lan Zheng, Min Zhang, Jianliang Fu, Jingbo Li, Xiang Han, Dahong Qian, and Dong Huang
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Atrial fibrillation ,Ischemic stroke ,Convolutional neural network ,Radiomics ,Medicine (General) ,R5-920 - Abstract
Summary: Background: Atrial fibrillation (AF) represents a major risk factor of ischemic stroke recurrence with serious management implications. However, it often remains undiagnosed due to lack of standard or prolonged cardiac rhythm monitoring. We aim to create a novel end-to-end artificial intelligence (AI) model that uses MRI data to rapidly identify high AF risk in patients who suffer from an acute ischemic stroke. Methods: This study comprises an internal retrospective cohort and a prospective cohort from Shanghai sixth people's hospital to train and validate an MRI-based AI model. Between January 1, 2018 and December 31, 2021, 510 patients were retrospectively enrolled for algorithm development and performance was measured using fivefold cross-validation. Patients from this trial were registered with http://www.chictr.org.cn, ChiCTR2200056385. Between September 1, 2022 and July 31, 2023, 73 patients were prospectively enrolled for algorithm test. An external cohort of 175 patients from Huashan Hospital, Minhang Hospital, and Shanghai Tenth People's Hospital was also enrolled retrospectively for further model validation. A combined classifier leveraging pre-defined radiomics features and de novo features extracted by convolutional neural network (CNN) was proposed to identify underlying AF in acute ischemic stroke patients. Area under the curve (AUC), sensitivity, specificity, accuracy, positive predictive value, and negative predictive value were calculated for model evaluation. Findings: The top-performing combined classifier achieved an AUC of 0.94 (95% CI, 0.90–0.98) in the internal retrospective validation group, 0.85 (95% CI, 0.79–0.91) in the external validation group, and 0.87 (95% CI, 0.90–0.98) in the prospective test group. Based on subgroup analysis, the AI model performed well in female patients, patients with NIHSS > 4 or CHA2DS2-VASc ≤ 3, with the AUC of 0.91, 0.94, and 0.90, respectively. More importantly, our proposed model identified all the AF patients that were diagnosed with Holter monitoring during index stroke admission. Interpretation: Our work suggested a potential association between brain ischemic lesion pattern on MR images and underlying AF. Furthermore, with additional validation, the AI model we developed may serve as a rapid screening tool for AF in clinical practice of stroke units. Funding: This work was supported by grants from the National Natural Science Foundation of China (NSFC, Grant Number: 81871102 and 82172068); Shanghai Jiao Tong University School of Medicine, Two-Hundred Talent Program as Research Doctor (Grant Number: SBR202204); Municipal Science and Technology Commission Medical Innovation Project of Shanghai, (Grant/Award Number: 20Y11910200); Research Physician Program of Shanghai Shen Kang Hospital Development Center (Grant Number: SHD2022CRD039) to Dr. Dong Huang and the SJTU Trans-med Awards Research (No. 20220101) to Dahong Qian.
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- 2025
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4. Impact of remote collaboration-based family physical activity on activity levels and quality of life in children with intellectual developmental disabilities
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Xin Shen, Peiying Huang, Maolin Su, Zijuan Liu, Qian Liu, Yin Guo, and Lan Zheng
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students ,intellectual and developmental disabilities ,moderate to vigorous physical activity ,quality of life ,family physical activity ,Public aspects of medicine ,RA1-1270 - Abstract
BackgroundLow levels of physical activity (PA) are prevalent among children with intellectual and developmental disabilities (IDD). Implementing family-based physical activities as extracurricular interventions offers a promising approach to enhancing their PA levels and promoting overall health.PurposeThis study aims to explore a novel integrative strategy by combining family-based activities with school physical education classes, with the objective of enhancing PA levels and improving the quality of life (QoL) for children with IDD. Methods: A total of 36 children with IDD (mean age = 16.4 years) were randomly assigned to a 6-month intervention group (IG) or a control group (CG). Both groups received adjusted adaptive physical education, while the IG received additional family support. Assessments of PA, QoL, and the Physical Activity Enjoyment Scale (PACES) were conducted at baseline, after 6 months, and at a 2-month follow-up post-intervention.ResultsThe 6-month intervention results showed that the IG had a significant increase in moderate to vigorous physical activity (MVPA) compared to the CG (p
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- 2024
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5. Handwashing sinks as reservoirs of carbapenem-resistant Acinetobacter baumannii in the intensive care unit: a prospective multicenter study
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Li Wei, Yu Feng, Ji Lin, Xia Kang, Hongdi Zhuang, Hongxia Wen, Shasha Ran, Lan Zheng, Yujing Zhang, Qian Xiang, Yan Liu, Xueqin Wu, Xiaofei Duan, Wensheng Zhang, Qu Li, Hua Guo, Chuanmin Tao, and Fu Qiao
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carbapenem-resistant Acinetobacter baumannii ,intensive care units ,handwashing sinks ,environmental reservoir ,outbreak source ,Public aspects of medicine ,RA1-1270 - Abstract
IntroductionThe extent to which sinks are contaminated by carbapenem-resistant Acinetobacter baumannii (CRAB) in intensive care units (ICUs) and the association between these contaminated sinks and hospital-acquired CRAB infections during the non-cluster period remains largely unknown. Here, we performed a prospective multicenter study in 16 ICUs at 11 tertiary hospitals in Chengdu, China.MethodsWe sampled sinks, collected CRAB clinical isolates, and conducted whole-genome sequencing and analysis.ResultsA total of 789 swabs were collected from 158 sinks, and 16 CRAB isolates were recovered from 16 sinks, resulting in a contamination rate of 10.16%. Twenty-seven clinical isolates were collected during the study period. The majority (97.67%, 42/43) of the CRAB isolates belonged to ST2, and 36 (83.72%) of them had both blaOXA-23 and blaOXA-66. The 43 strains belonged to 12 clones. One certain clone caused multiple contaminations of seven sinks in one GICU. Two clones of ST2 blaOXA-23 and blaOXA-66-carrying sink strains were likely the sources of the two clusters in the two GICUs, respectively. Five ST2 blaOXA-23-carrying isolates were found to be common clones but were recovered from two hospitals.ConclusionThe contamination rate of CRAB in handwashing sinks is high in some local ICUs, and the contaminated sinks can serve as environmental reservoirs for CRAB clusters.
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- 2024
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6. Telehealth based parental support over 6 months improves physical activity and sleep quality in children with autism: a randomized controlled trial
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Xin Shen, Peiying Huang, Qian Liu, Yin Guo, and Lan Zheng
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exercise ,health behavior ,insomnia ,sleep disturbance ,telemedicine ,Pediatrics ,RJ1-570 - Abstract
PurposeSleep disturbances are prevalent in autistic children. The emergence of telehealth offers new possibilities for remote professional intervention. By combining telehealth with parental support, this study aims to explore a novel family-based model to enhance moderate-to-vigorous physical activity (MVPA) and improve sleep quality in children with autism.MethodsThirty-four autistic children (mean age = 15.7 years) were randomly assigned to either a 6-month intervention group or a control group. Both groups received standard physical education classes at school. The intervention group received additional after-school telehealth support. MVPA and sleep quality were assessed 1 week before the intervention and at the 6-month follow-up.ResultsAfter 6 months, children in the intervention group nearly doubled their daily MVPA compared to the control group (Cohen's d = 8.34, CI95% = 6.17–10.52). Actigraphy-assessed sleep efficiency was notably higher (d = 2.35, CI95% = 1.44–3.26), and there were reductions in wake time (d = 1.65, CI95% = 0.84–2.46), sleep fragmentation (d = 0.80, CI95% = 0.07–1.52), and sleep latency (d = 0.82, CI95% = 0.09–1.54) were all reduced. These improvements in objective sleep metrics were corroborated by subjective assessments using the Sleep Disturbance Scale for Children (d = 0.86, CI95% = 0.13–1.59).ConclusionsTelehealth combined with parental support addresses barriers to enhancing health behaviors at home. This innovative model not only improves after-school MVPA and sleep quality in autistic children but also holds significant potential for benefiting other populations requiring remote support.Clinical Trial Registrationhttps://clinicaltrials.gov/study/NCT06444659?id=NCT06444659&rank=1 (NCT06444659).
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- 2024
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7. Effective reservoir identification and sweet spot prediction in Chang 8 Member tight oil reservoirs in Huanjiang area, Ordos Basin
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Qiu Xiangliang, Fu Yuxuan, Yan Zhandong, Zheng XiaoMei, Wang Mingxian, and Lan Zheng
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huanjiang oilfield ,chang 8 reservoir ,tight oil sandstone ,oil-bearing property ,sweet spot prediction ,Geology ,QE1-996.5 - Abstract
The Chang 8 reservoir of the Huanjiang Oilfield in the Ordos Basin is a tight sandstone reservoir with poor reservoir physical properties and uneven oil distribution. In this study, the effective reservoirs developed on a large scale under the condition of horizontal well volume fracturing technology of the Chang 8 Member was identified based on the data of core observation, experimental analysis, logging, oil test, and production dynamics, and the identification standard of effective reservoirs in terms of reservoir physical properties, oil content, and comprehensive logging characteristics of gas logging was established. This scheme allows for a thorough identification of the effective reservoirs for horizontal well development in tight sandstone reservoirs. The findings indicate that the study area’s tight oil resources can be successfully produced. The well logging results show that the oil-bearing property of sand bodies with oil stains is better than that of oil spots. The bottom limit of the acoustic wave time difference is 210 μs/m, the permeability is 0.03 mD, the porosity is 6.0%, the rock resistivity is 30 Ω m, and the total hydrocarbon gas measurement value exceeds five times the baseline. At the same time, the total oil thickness is greater than 6 m, and the thickness of a single sand body is above 4 m. We have defined the lower limit standard of high-efficiency reservoir of Chang 8 tight oil in L289 block of Huanjiang oilfield. According to the analysis of oil-bearing property, comprehensive logging display, and reservoir thickness, the geological “sweet spots” is optimized to provide reference for subsequent mining. Through comparative analysis, the rules and trends are found to provide a basis for selecting mining strategies. With the help of technical means such as numerical simulation and geological modeling, the prediction accuracy and decision-making effect are improved. By clarifying the lower limit standard of reservoir, optimizing geological “sweet spots” and avoiding risk areas, the mining efficiency is improved and the cost is reduced, which provides reference for similar oilfield development.
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- 2024
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8. Body Mass Index and Risk of Female Reproductive System Tumors Subtypes: A Meta-Analysis Using Mendelian Randomization
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Xi-Ya Jiang MM, Lan Zheng MM, Min Xiong MD, Sen-Lin Wang MD, Qin-Qin Jin MM, Yin-Ting Yang MM, Ya-Xing Fang MM, Lin Hong MM, Jie Mei MM, and Shu-Guang Zhou MD, PhD
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Introduction: A strong association was previously established between body mass index (BMI) and female reproductive system tumors; however, the causal relationship is unclear. We conducted a Mendelian randomization (MR) study to further explore this association. Methods: Genetic information for BMI was retrieved from a published genome-wide association study involving 339,224 participants. Genetic associations with five common female reproductive system tumors were obtained from the FinnGen, UK Biobank studies, and other large consortia. Results: Genetic predisposition towards BMI exhibits a significant association with multiple tumors of the female reproductive system. Specifically, for every 1-unit increase in BMI log-transformed odds ratio (OR). The OR fluctuations overall for patients with breast cancer ranged from 0.661 to 0.996 (95% confidence interval [CI],0.544-1.000, P
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- 2024
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9. A Comprehensive Prognostic Model for Colon Adenocarcinoma Depending on Nuclear-Mitochondrial-Related Genes
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Lingling Lv PhD, Yuqing Huang MSc, Qiong Li PhD, Yuan Wu MSc, and Lan Zheng PhD
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Background: Colon adenocarcinoma (COAD) has increasing incidence and is one of the most common malignant tumors. The mitochondria involved in cell energy metabolism, oxygen free radical generation, and cell apoptosis play important roles in tumorigenesis and progression. The relationship between mitochondrial genes and COAD remains largely unknown. Methods: COAD data including 512 samples were set out from the UCSC Xena database. The nuclear mitochondrial-related genes (NMRGs)-related risk prognostic model and prognostic nomogram were constructed, and NMRGs-related gene mutation and the immune environment were analyzed using bioinformatics methods. Then, a liver metastasis model of colorectal cancer was constructed and protein expression was detected using Western blot assay. Results: A prognostic model for COAD was constructed. Comparing the prognostic model dataset and the validation dataset showed considerable correlation in both risk grouping and prognosis. Based on the risk score (RS) model, the samples of the prognostic dataset were divided into high risk group and low risk group. Moreover, pathologic N and T stage and tumor recurrence in the two risk groups were significantly different. The four prognostic factors, including age and pathologic T stage in the nomogram survival model also showed excellent predictive performance. An optimal combination of nine differentially expressed NMRGs was finally obtained, including LARS2 , PARS2 , ETHE1 , LRPPRC , TMEM70 , AARS2 , ACAD9 , VARS2 , and ATP8A2 . The high-RS group had more inflamed immune features, including T and CD4 + memory cell activation. Besides, mitochondria-associated LRPPRC and LARS2 expression levels were increased in vivo xenograft construction and liver metastases assays. Conclusion: This study established a comprehensive prognostic model for COAD, incorporating nine genes associated with nuclear-mitochondrial functions. This model demonstrates superior predictive performance across four prognostic factors: age, pathological T stage, tumor recurrence, and overall prognosis. It is anticipated to be an effective model for enhancing the prognosis and treatment of COAD.
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- 2024
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10. BMSC-derived exosomal miR-148b-3p attenuates OGD/R-induced HMC3 cell activation by targeting DLL4 and Notch1
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Fang Yi, Hui Xiao, Mingyu Song, Lei Huang, Qianyi Huang, Jun Deng, Han Yang, Lan Zheng, Hong Wang, and Wenping Gu
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Ischemic stroke ,Bone marrow mesenchymal stem cell ,Exosome ,Microglia cell ,MiR-148b-3p ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Bone mesenchymal stem cell (BMSC)-derived exosome (BMSC-Exo) could be a treatment method for ischemic injury. In ischemic cerebrovascular disease (IC), microglia is pivotal in neuronal damage and remodeling. This study explores the mechanisms of BMSC-Exo miR-148b-3p in regulating oxygen-glucose deprivation/reoxygenation (OGD/R)-induced human microglial clone 3 (HMC3) cell activation. Transmission electron microscopy (TEM) and qNano were used to assess BMSC-Exo features. The functions of BMSC-Exo miR-148 b-3p in OGD/R-induced HMC3 cell activation were explored via MTT assay, flow cytometry, scratch, transwell, and enzyme-linked immunosorbent assay (ELISA) assays. A dual-luciferase reporter assay was performed to determine the relationship between miR-148b-3p and Delta-like ligand 4(DDL4) or neurogenic locus notch homolog protein 1 (Notch1). OGD/R decreased miR-148b-3p expression in HMC3 cells. After BMSC-Exo treatment, miR-148b-3p expression was upregulated, cell viability and migration were inhibited, cell cycles remained in the G0/G1 phase, and proinflammatory cytokines were decreased in OGD/R-induced HMC3 cells. More importantly, BMSC-Exo miR-148b-3p could further strengthen BMSC-Exo effects. DDL4 and Notch1 are direct targets of miR-148b-3p, respectively. Moreover, the knockdown of DLL4 or Notch1 could inhibit OGD/R-induced HMC3 cell activation. BMSC-Exo miR-148b-3p inhibited OGD/R-induced HMC3 cell activation via inhibiting DLL4 and Notch1 expression, which provided a new strategy for treating cerebral ischemia.
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- 2024
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11. An Adapted Physical Activity Program for Adolescents with an Intellectual Disability: An International Classification of Functioning, Disability, and Health Perspective
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Xin Shen, Peiying Huang, Bing Nie, Maolin Su, Dan Liu, Yin Guo, and Lan Zheng
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intellectual disabilities ,fundamental motor skills ,quality of life ,physical fitness ,International Classification of Functioning, Disability, and Health ,adapted physical activity ,Science - Abstract
The International Classification of Functioning, Disability, and Health (ICF) offers a comprehensive bio-psycho-social model for evaluating the multifaceted needs of individuals with disabilities. While its adoption in healthcare settings is widespread, its utilization within the domain of physical activity interventions, particularly for adolescents with intellectual disabilities (IDs), remains insufficiently explored. This study rigorously examines the efficacy of a 6-month ICF-based Adaptive Physical Activity (APA) intervention on the development of fundamental motor skills (FMSs), improvements in physical fitness (PF), and enhancements in quality of life (QoL) among adolescents with ID. A total of thirty-eight adolescents were randomly allocated into either an intervention group (IG), which participated in the tailored APA program, or a control group (CG), which received standard physical education. The findings demonstrated statistically significant improvements in the IG’s test of gross motor development (TGMD) total, locomotor, object control, and QOL scores relative to the CG (p < 0.001, η² = 0.330, 0.249, 0.224, and 0.439, respectively). Furthermore, substantial gains were observed in PF measures, including upper and lower limb strength as well as cardiorespiratory fitness (p < 0.001, η² = 0.254, 0.351, 0.176). Strong positive correlations were noted between FMS, PF, and QoL (r = 0.34–0.71, p < 0.05). This study underscores the importance of tailoring physical activity programs for adolescents with ID, offering insights into the relationships between FMS, PF, and QoL, and guidance for future interventions aimed at improving health outcomes in this population.
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- 2024
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12. Cynanchum paniculatum (Bunge) Kitag. ex H.Hara inhibits pancreatic cancer progression by inducing caspase-dependent apoptosis and suppressing TGF-β-mediated epithelial-mesenchymal transition
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Chien-Shan Cheng, Yuan Wu, Jia-Bin Jin, Jia-Yue Xu, Pei-Wen Yang, Wen-Hua Zhu, Lan Zheng, and Jing-Xian Chen
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Cynanchum paniculatum (Bunge) Kitag. ex H.Hara ,apoptosis-induction ,anti-invasion and anti-migration ,caspase-dependent apoptosis ,epithelial-mesenchymal transition ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Background:Cynanchum paniculatum (Bunge) Kitag. ex H.Hara, a member of the Asclepiadaceae family, has a rich history as a traditional Chinese medicinal plant used to treat digestive disorders. However, its potential anti-cancer effects in pancreatic cancer remain largely unexplored.Aim: This study delves into the intricate anti-pancreatic cancer mechanisms of C. paniculatum (Bunge) Kitag. ex H.Hara aqueous extract (CPAE) by elucidating its role in apoptosis induction and the inhibition of invasion and migration.Methods: A comprehensive set of methodologies was employed to assess CPAE’s impact, including cell viability analyses using MTT and colony formation assays, flow cytometry for cell cycle distribution and apoptosis assessment, scratch-wound and Matrigel invasion assays for migration and invasion capabilities, and immunoblotting to measure the expression levels of key proteins involved in apoptosis and metastasis. Additionally, a murine xenograft model was established to investigate CPAE’s in vivo anti-cancer potential.Results: CPAE exhibited time- and dose-dependent suppression of proliferation and colony formation in pancreatic cancer cells. Notably, CPAE induced apoptosis and G2/M phase arrest, effectively activating the caspase-dependent PARP pathway. At non-cytotoxic doses, CPAE significantly curtailed the metastatic abilities of pancreatic cells, effectively suppressing epithelial-mesenchymal transition (EMT) and downregulating the TGF-β1/Smad2/3 pathway. In vivo experiments underscored CPAE’s ability to inhibit tumor proliferation.Conclusion: This study illuminates the multifaceted anti-proliferative, pro-apoptotic, anti-invasive, and anti-migratory effects of CPAE, both in vitro and in vivo. CPAE emerges as a promising herbal medicine for pancreatic cancer treatment, with its potential mediated through apoptosis induction via the caspase-dependent PARP pathway and MET suppression via the TGF-β1/Smad2/3 signaling pathway at non-cytotoxic doses. These findings advocate for further exploration of CPAE’s therapeutic potential in pancreatic cancer.
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- 2024
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13. Endurance exercise upregulates mtp expression in aged Drosophila to ameliorate age‐related diastolic dysfunction and extend lifespan
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Tianhang Peng, Meng Ding, Hanhui Yan, Ping Zhang, Rui Tian, Yin Guo, and Lan Zheng
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aging ,cardiac function ,Drosophila ,endurance exercise ,lifespan ,mtp ,Physiology ,QP1-981 - Abstract
Abstract Diastolic dysfunction is a major cardiac dysfunction, and an important predisposing factor is age. Although exercise training is often used for the prevention and treatment of cardiovascular disease nowadays, little is currently known about whether exercise interventions associated with the slowing of cardiac aging are related to mtp‐related pathways. In the present study, the UAS/Tub‐Gal4 system was used to knockdown whole‐body mtp expression levels in Drosophila, which underwent 2 weeks of endurance training. By conducting different assays and quantifying different indicators, we sought to investigate the relationship between mtp, exercise, and age‐related diastolic dysfunction. We found that (1) Drosophila in the mtpRNAi youth group exhibited age‐related diastolic dysfunction and had a significantly shorter mean lifespan. (2) Endurance exercise could improve diastolic dysfunction and prolong lifespan in aged Drosophila. (3) Endurance exercise could increase the expression levels of apolpp and Acox3, and decrease the levels of TC, LDL‐C, and TG in the aged group. In summary, aging causes age‐associated diastolic dysfunction in Drosophila, and systemic knockdown of mtp causes premature age‐associated diastolic dysfunction in young Drosophila. Besides, endurance exercise improves age‐related diastolic dysfunction and prolongs lifespan.
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- 2024
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14. A Rational Design of Metal–Organic Framework Nanozyme with High-Performance Copper Active Centers for Alleviating Chemical Corneal Burns
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Yonghua Tang, Yi Han, Jiachen Zhao, Yufei Lv, Chaoyu Fan, Lan Zheng, Zhisen Zhang, Zuguo Liu, Cheng Li, and Youhui Lin
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Metal–organic frameworks nanozyme ,Superoxide dismutase ,Halogen ,Chemical ocular burn ,Corneal diseases ,Technology - Abstract
Highlights Inspired by metalloenzymes with well-defined coordination structures, a series of Cu-X metal–organic frameworks (MOFs) nanozymes with tunable copper active centers were successfully constructed. Experimental and theoretical results strongly supported that precisely tuning the coordination of halogen atoms could directly regulate the enzyme-like activities of Cu-X MOFs by influencing their spatial configuration and electronic structure. The optimal Cu–Cl MOF with excellent enzyme-mimicking activities could effectively relieve ocular chemical burns by possible antioxidant and antiapoptotic mechanisms.
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- 2023
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15. Alleviating the hypoxic tumor microenvironment with MnO2-coated CeO2 nanoplatform for magnetic resonance imaging guided radiotherapy
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Fen Pi, Xuanru Deng, Qian Xue, Lan Zheng, Hongxing Liu, Fang Yang, and Tianfeng Chen
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Radiosensitizer ,Hypoxia ,Core–shell nanocomposite ,Antitumor ,MR imaging ,Biotechnology ,TP248.13-248.65 ,Medical technology ,R855-855.5 - Abstract
Abstract Background Radiotherapy is a commonly used tool in clinical practice to treat solid tumors. However, due to the unique microenvironment inside the tumor, such as high levels of GSH, overexpressed H2O2 and hypoxia, these factors can seriously affect the effectiveness of radiotherapy. Results Therefore, to further improve the efficiency of radiotherapy, a core–shell nanocomposite CeO2–MnO2 is designed as a novel radiosensitizer that can modulate the tumor microenvironment (TME) and thus improve the efficacy of radiation therapy. CeO2–MnO2 can act as a radiosensitizer to enhance X-ray absorption at the tumor site while triggering the response behavior associated with the tumor microenvironment. According to in vivo and in vitro experiments, the nanoparticles aggravate the killing effect on tumor cells by generating large amounts of ROS and disrupting the redox balance. In this process, the outer layer of MnO2 reacts with GSH and H2O2 in the tumor microenvironment to generate ROS and release oxygen, thus alleviating the hypoxic condition in the tumor area. Meanwhile, the manganese ions produced by degradation can enhance T1-weighted magnetic resonance imaging (MRI). In addition, CeO2–MnO2, due to its high atomic number oxide CeO2, releases a large number of electrons under the effect of radiotherapy, which further reacts with intracellular molecules to produce reactive oxygen species and enhances the killing effect on tumor cells, thus having the effect of radiotherapy sensitization. In conclusion, the nanomaterial CeO2–MnO2, as a novel radiosensitizer, greatly improves the efficiency of cancer radiation therapy by improving the lack of oxygen in tumor and responding to the tumor microenvironment, providing an effective strategy for the construction of nanosystem with radiosensitizing function. Conclusion In conclusion, the nanomaterial CeO2–MnO2, as a novel radiosensitizer, greatly improves the efficiency of cancer radiation therapy by improving the lack of oxygen in tumor and responding to the tumor microenvironment, providing an effective strategy for the construction of nanosystems with radiosensitizing function.
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- 2023
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16. Clickable corneal neovascularization therapy with ROS-responsive polydopamine silica nanoparticles loaded with fenofibrate
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Kai Fan, Lixue Yu, Yuehuang Wu, Lan Zheng, Xiuqin Yang, Jingwei Lin, Mengyuan Wang, Yingyue Ye, Ruimiao Lin, Quancheng Chen, Zeyu Liu, Yuhua Xue, Jingjing Xie, and Cheng Li
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Silica nanoparticles ,Corneal neovascularization ,ROS ,Fenofibrate ,Polydopamine ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
Corneal neovascularization is a severe eye disease that is often associated with an inflammatory cycle and increased oxidative stress. Excessive reactive oxygen species can cause harmful changes in the corneal epithelium and lead to vicious inflammatory cycles, resulting in an increase in corneal neovascularization. Unfortunately, many drugs used in clinic are water-insoluble and have low bioavailability on the ocular surface, which limits their effectiveness. Therefore, it's crucial to design a new drug delivery system. In this study, we designed an oxide-responsive nanoparticle system called MPA, which was consisted of the large pore sized-mesoporous silica nanoparticles (MSNs) core and the polydopamine (PDA) surface shell via the linkage with disulfide bond. Finally, the nanoparticles are endowed with the enhanced loading efficiency and the controllable release of fenofibrate (Feno) in response to the abundant ROS level in the inflammatory environment. In an in vivo study using mice, treatment with MPA@ Feno resulted in minimal corneal neovascularization area and length and significantly reduced expression of pro-angiogenic factors and oxidative stress factors. Therefore, MPA solves the problem of poor drug solubility, clearing oxygen species in the pathological environment, which will improve its therapeutic effect in corneal neovascularization.
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- 2023
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17. Human papillomavirus associated cervical lesion: pathogenesis and therapeutic interventions
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Jiatian Ye, Lan Zheng, Yuedong He, and Xiaorong Qi
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cervical cancer ,cervical preneoplastic lesions ,human papillomavirus ,pathogenesis ,therapy ,Medicine - Abstract
Abstract Human papillomavirus (HPV) is the most prevalent sexually transmitted virus globally. Persistent high‐risk HPV infection can result in cervical precancerous lesions and cervical cancer, with 70% of cervical cancer cases associated with high‐risk types HPV16 and 18. HPV infection imposes a significant financial and psychological burden. Therefore, studying methods to eradicate HPV infection and halt the progression of precancerous lesions remains crucial. This review comprehensively explores the mechanisms underlying HPV‐related cervical lesions, including the viral life cycle, immune factors, epithelial cell malignant transformation, and host and environmental contributing factors. Additionally, we provide a comprehensive overview of treatment methods for HPV‐related cervical precancerous lesions and cervical cancer. Our focus is on immunotherapy, encompassing HPV therapeutic vaccines, immune checkpoint inhibitors, and advanced adoptive T cell therapy. Furthermore, we summarize the commonly employed drugs and other nonsurgical treatments currently utilized in clinical practice for managing HPV infection and associated cervical lesions. Gene editing technology is currently undergoing clinical research and, although not yet employed officially in clinical treatment of cervical lesions, numerous preclinical studies have substantiated its efficacy. Therefore, it holds promise as a precise treatment strategy for HPV‐related cervical lesions.
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- 2023
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18. Aerobic exercise enhances mitochondrial homeostasis to counteract D-galactose-induced sarcopenia in zebrafish
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Zhang-Lin Chen, Cheng Guo, Yun-Yi Zou, Chen Feng, Di-Xuan Yang, Chen-Chen Sun, Wei Wen, Zhen-Jie Jian, Zhe Zhao, Qin Xiao, Lan Zheng, Xi-Yang Peng, Zuo-Qiong Zhou, and Chang-Fa Tang
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Aerobic exercise ,Zebrafish ,Sarcopenia ,Mitochondrial homeostasis ,d-Galactose ,Medicine ,Biology (General) ,QH301-705.5 - Abstract
Sarcopenia is a common skeletal muscle degenerative disease characterized by decreased skeletal muscle mass and mitochondrial dysfunction that involves microRNAs (miR) as regulatory factors in various pathways. Exercise reduces age-related oxidative damage and chronic inflammation and increases autophagy, among others. Moreover, whether aerobic exercise can regulate mitochondrial homeostasis by modulating the miR-128/insulin-like growth factor-1 (IGF-1) signaling pathway and can improve sarcopenia requires further investigation. Interestingly, zebrafish have been used as a model for aging research for over a decade due to their many outstanding advantages. Therefore, we established a model of zebrafish sarcopenia using d-galactose immersion and observed substantial changes, including reduced skeletal muscle cross-sectional area, increased tissue fibrosis, decreased motility, increased skeletal muscle reactive oxygen species, and notable alterations in mitochondrial morphology and function. We found that miR-128 expression was considerably upregulated, where as Igf1 and peroxisome proliferator-activated receptor gamma coactivator 1-alpha were significantly downregulated; moreover, mitochondrial homeostasis was reduced. Four weeks of aerobic exercise delayed sarcopenia progression and prevented the disruption of mitochondrial function and homeostasis. The genes related to atrophy and miR-128 were downregulated, Igf1 expression was considerably upregulated, and the phosphorylation levels of Pi3k, Akt, and Foxo3a were upregulated. Furthermore, mitochondrial respiration and homeostasis were enhanced. In conclusion, aerobic exercise improved skeletal muscle quality and function via the miR-128/IGF-1 signaling pathway, consequently ameliorating mitochondrial homeostasis in aging skeletal muscle.
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- 2023
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19. Effects of 8 months of high-intensity interval training on physical fitness and health-related quality of life in substance use disorder
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Jun Tan, Jingsong Wang, Yin Guo, Chunxia Lu, Wanke Tang, and Lan Zheng
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high-intensity interval training ,physical fitness ,health-related quality of life ,abstinent drug subjects ,exercise ,Psychiatry ,RC435-571 - Abstract
ObjectiveThis study aimed to investigate the effect of 8 months of high-intensity interval training (HIIT) on physical fitness and health-related quality of life in substance use disorder.MethodsSixty substance use disorder were randomly assigned to either the HIIT group or the control group according to a random sampling method. The HIIT group received 8 months of four 60-min sessions per week under supervision. Weight, waist circumference, body fat percentage, heart rate, blood pressure, VO2max, reaction time, grip strength, standing on one foot with eyes closed, sitting forward flexion, and quadrant jumping, standing on one foot with eyes closed, the number of push-ups, quality of life (SF-36) score, and craving (VAS) scored were monitored in the HIIT and control groups at baseline, 4 months, and 8 months. SPSS 22.0 was used to conduct repeated measurement analysis of variance and Pearson correlation analysis on the collected subject data.ResultsCompared with baseline, weight (p
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- 2023
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20. Decellularized squid mantle scaffolds as tissue‐engineered corneal stroma for promoting corneal regeneration
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Honghua Kang, Yi Han, Mengyi Jin, Lan Zheng, Zhen Liu, Yuhua Xue, Zuguo Liu, and Cheng Li
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corneal stromal equivalents ,corneal tissue engineering ,decellularized squid mantle ,marine biomaterials ,tissue clearing technology ,Chemical engineering ,TP155-156 ,Biotechnology ,TP248.13-248.65 ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Abstract Corneal blindness is a worldwide major cause of vision loss, and corneal transplantation remains to be the most effective way to restore the vision. However, often there is a shortage of the donor corneas for transplantation. Therefore, it is urgent to develop a novel tissue‐engineered corneal substitute. The present study envisaged the development of a novel and efficient method to prepare the corneal stromal equivalent from the marine biomaterials‐squid. A chemical method was employed to decellularize the squid mantle scaffold to create a cell‐free tissue substitute using 0.5% sodium dodecyl sulfate (SDS) solution. Subsequently, a novel clearing method, namely clear, unobstructed brain imaging cocktails (CUBIC) method was used to transparent it. Decellularized squid mantle scaffold (DSMS) has high decellularization efficiency, is rich in essential amino acids, and maintains the regular fiber alignment. In vitro experiments showed that the soaking solution of DSMS was non‐toxic to human corneal epithelium cells. DSMS exhibited a good biocompatibility in the rat muscle by undergoing a complete degradation, and promoted the growth of the muscle. In addition, the DSMS showed a good compatibility with the corneal stroma in the rabbit inter‐corneal implantation model, and promoted the regeneration of the corneal stroma without any evident rejection. Our results indicate that the squid mantle can be a potential new type of tissue‐engineered corneal stroma material with a promising clinical application.
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- 2023
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21. Relationship between insulin-like growth factor-1 and cerebral small vessel disease and its mechanisms: advances in the field
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Hao Du, Jian Xia, Lei Huang, Lan Zheng, Wenping Gu, and Fang Yi
- Subjects
insulin-like growth factor-1 ,cerebral small vessel disease ,neurovascular unit ,blood–brain barrier ,microvascular rarefaction ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Insulin-like growth factor-1 (IGF-1) is an active polypeptide protein that closely resembles the structural sequence of insulin and is involved in a variety of metabolic processes in the body. Decreased IGF-1 circulation levels are associated with an increased risk of stroke and a poorer prognosis, but the relationship with cerebral small vessel disease (cSVD) is unclear. Some studies found that the level of IGF-1 in patients with cSVD was significantly reduced, but the clinical significance and underlying mechanisms are unknown. This article reviews the correlation between IGF-1 and cerebrovascular disease and explores the potential relationship and mechanism between IGF-1 and cSVD.
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- 2023
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22. Qin Huang formula enhances the effect of Adriamycin in B-cell lymphoma via increasing tumor infiltrating lymphocytes by targeting toll-like receptor signaling pathway
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Weili Li, Lingling Lv, Ming Ruan, Jiayue Xu, Wenhua Zhu, Qiong Li, Xufeng Jiang, Lan Zheng, and Weirong Zhu
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Qin Huang formula ,B-cell lymphoma ,Tumor microenvironment ,Tumor-infiltrating lymphocytes ,Toll-like receptor ,Systemic pharmacology ,Other systems of medicine ,RZ201-999 - Abstract
Abstract Background As an original traditional Chinese medicinal formula, Qin Huang formula (QHF) is used as adjuvant therapy for treating lymphoma in our hospital and has proven efficacy when combined with chemotherapy. However, the underlying mechanisms of QHF have not been elucidated. Methods A network pharmacological-based analysis method was used to screen the active components and predict the potential mechanisms of QHF in treating B cell lymphoma. Then, a murine model was built to verify the antitumor effect of QHF combined with Adriamycin (ADM) in vivo. Finally, IHC, ELISA, 18F-FDG PET-CT scan, and western blot were processed to reveal the intriguing mechanism of QHF in treating B cell lymphoma. Results The systemic pharmacological study revealed that QHF took effect following a multiple-target and multiple-pathway pattern in the human body. In vivo study showed that combination therapy with QHF and ADM potently inhibited the growth of B cell lymphoma in a syngeneic murine model, and significantly increased the proportion of tumor infiltrating CD4+ and CD8+ T cells in the tumor microenvironment (TME). Furthermore, the level of CXCL10 and IL-6 was significantly increased in the combination group. Finally, the western blot exhibited that the level of TLR2 and p38 MAPK increased in the combination therapy group. Conclusion QHF in combination of ADM enhances the antitumor effect of ADM via modulating tumor immune microenvironment and can be a combination therapeutic strategy for B cell lymphoma patients.
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- 2022
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23. MicroRNA-146a promotes proliferation, migration, and invasion of HepG2 via regulating FLAP
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Huihui Wang, Shubing Zhang, Tao Li, Lianzi Wang, Wei Lv, Shanshan Wang, Dongyue Ma, Yan Zang, Xinyue Zhu, Yuanhong Xu, Lan Zheng, Jilong Shen, and Wei Wei
- Subjects
MircoRNA-146a ,5-Lipoxygenase Activating Protein (FLAP) ,Hepatocellular carcinoma (HCC) ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 ,Cytology ,QH573-671 - Abstract
Abstract Abnormal expression of 5-Lipoxygenase Activating Protein (FLAP) has been detected in many tumor cells. MicroRNAs (miRNAs) negatively regulate gene expression post-transcriptionally by binding to the 3'–untranslated region (3'–UTR) of the target mRNA sequences and have been shown to be involved in various types of cancers. Herein, we aimed to demonstrate the expression of miR-146a and FLAP in human HCC tissues and liver cancer cell lines. We demonstrated that miR-146a expression is overexpressed, while FLAP protein and mRNA are suppressed in hepatocellular carcinoma tissues and HepG2 cells compared to para-carcinoma tissues and HL–7702 cells. Dual luciferase reporter gene assay showed that miR-146a-5p can directly target FLAP mRNA. Knockdown of miR-146a also resulted in increased FLAP expression of cancer cells. Additionally, miR-146a silencing or restoration of FLAP led to a reduction of HepG2 cell proliferation, cell cycle progression, migration, and invasion. This study showed that miR-146a has a stimulatory role in HepG2 cells and promotes HepG2 cell migration and invasion by targeting FLAP mRNA. Thus, miR-146a may be a tumor promoter and a potential therapeutic target for the treatment of HCC patients.
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- 2022
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24. Is conservative management of ductal carcinoma in situ risky?
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Lan Zheng, Yesim Gökmen-Polar, and Sunil S. Badve
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Nonsurgical management of ductal carcinoma in situ is controversial and little is known about the long-term consequences of this approach. In this study, we aimed to determine the risk of (a) upstaging to invasive carcinoma at excision and (b) ipsilateral breast cancer events in patients who might have been eligible for nonsurgical management of DCIS trials. Data from women aged 20 years or older with a biopsy diagnosis of DCIS between January 1, 2010 to December 31, 2014 were collated. The women underwent biopsy and surgical resection (lumpectomy or mastectomy) and were treated with radiation or endocrine therapy as per treating physicians’ choice. The development of ipsilateral breast cancer events (IBEs) was analyzed in patients with at least 5 years of follow-up after standard of care therapy for DCIS. Subset-analysis was undertaken to identify the incidence of IBEs in patients eligible for nonsurgical management trials. The study population consisted of 378 patients with matched cases of biopsy and surgical excision. The overall upstaging rate to IBC was 14.3 and 12.9% for COMET, 8.8% for LORIS, and 10.7% for LORD trial “eligible” patients. At 5 years of follow-up, ~11.5% of overall and trial eligible patients developed IBEs of which approximately half were invasive IBEs. In conclusion, women with DCIS who would have been eligible for nonsurgical management trials have a significantly high risk of developing ipsilateral breast events within 5 years of diagnosis. Better selection criteria are needed to identify DCIS patients who are at very low risk for the development of IBC.
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- 2022
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25. Effectiveness of an ocular adhesive polyhedral oligomeric silsesquioxane hybrid thermo-responsive FK506 hydrogel in a murine model of dry eye
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Yi Han, Lu Jiang, Huihui Shi, Chenfang Xu, Minting Liu, Qingjian Li, Lan Zheng, Hong Chi, Mingyue Wang, Zuguo Liu, Mingliang You, Xian Jun Loh, Yun-Long Wu, Zibiao Li, and Cheng Li
- Subjects
Ocular adhesive ,Polyhedral oligomeric silsesquioxane ,FK506 ,Dry eye ,Materials of engineering and construction. Mechanics of materials ,TA401-492 ,Biology (General) ,QH301-705.5 - Abstract
Dry eye is a common ocular disease that results in discomfort and impaired vision, impacting an individual's quality of life. A great number of drugs administered in eye drops to treat dry eye are poorly soluble in water and are rapidly eliminated from the ocular surface, which limits their therapeutic effects. Therefore, it is imperative to design a novel drug delivery system that not only improves the water solubility of the drug but also prolongs its retention time on the ocular surface. Herein, we develop a copolymer from mono-functional POSS, PEG, and PPG (MPOSS-PEG-PPG, MPEP) that exhibits temperature-sensitive sol-gel transition behavior. This thermo-responsive hydrogel improves the water solubility of FK506 and simultaneously provides a mucoadhesive, long-acting ocular delivery system. In addition, the FK506-loaded POSS hydrogel possesses good biocompatibility and significantly improves adhesion to the ocular surface. In comparison with other FK506 formulations and the PEG-PPG-FK506 (F127-FK506) hydrogel, this novel MPOSS-PEG-PPG-FK506 (MPEP-FK506) hydrogel is a more effective treatment of dry eye in the murine dry eye model. Therefore, delivery of FK506 in this POSS hydrogel has the potential to prolong drug retention time on the ocular surface, which will improve its therapeutic efficacy in the management of dry eye.
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- 2022
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26. Exercise intervention improves mitochondrial quality in non-alcoholic fatty liver disease zebrafish
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Yun-Yi Zou, Xiang-bin Tang, Zhang-Lin Chen, Bin Liu, Lan Zheng, Ming-Yang Song, Qin Xiao, Zuo-Qiong Zhou, Xi-Yang Peng, and Chang-Fa Tang
- Subjects
exercise ,non-alcoholic fatty liver disease ,mitochondria quality control ,zebrafish ,mitochondrial dysfunction ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
IntroductionRecent reports indicate that mitochondrial quality decreases during non-alcoholic fatty liver disease (NAFLD) progression, and targeting the mitochondria may be a possible treatment for NAFLD. Exercise can effectively slow NAFLD progression or treat NAFLD. However, the effect of exercise on mitochondrial quality in NAFLD has not yet been established.MethodsIn the present study, we fed zebrafish a high-fat diet to model NAFLD, and subjected the zebrafish to swimming exercise.ResultsAfter 12 weeks, swimming exercise significantly reduced high-fat diet-induced liver injury, and reduced inflammation and fibrosis markers. Swimming exercise improved mitochondrial morphology and dynamics, inducing upregulation of optic atrophy 1(OPA1), dynamin related protein 1 (DRP1), and mitofusin 2 (MFN2) protein expression. Swimming exercise also activated mitochondrial biogenesis via the sirtuin 1 (SIRT1)/ AMP-activated protein kinase (AMPK)/ PPARgamma coactivator 1 alpha (PGC1α) pathway, and improved the mRNA expression of genes related to mitochondrial fatty acid oxidation and oxidative phosphorylation. Furthermore, we find that mitophagy was suppressed in NAFLD zebrafish liver with the decreased numbers of mitophagosomes, the inhibition of PTEN-induced kinase 1 (PINK1) – parkin RBR E3 ubiquitin protein ligase (PARKIN) pathway and upregulation of sequestosome 1 (P62) expression. Notably, swimming exercise partially recovered number of mitophagosomes, which was associated with upregulated PARKIN expression and decreased p62 expression.DiscussionThese results demonstrate that swimming exercise could alleviate the effects of NAFLD on the mitochondria, suggesting that exercise may be beneficial for treating NAFLD.
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- 2023
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27. Anesthesiology education: A discussion on the current reform for training in the hypoxic environment of the highlands of China
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Hongyang Chen, Zining Wang, Lan Zheng, Jiumei Ciren, Weiyi Zhang, and Tao Zhu
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anesthesiology education ,Tibetion Plateau ,hypoxic highlands ,training ,anesthesiologist ,Education (General) ,L7-991 - Abstract
In recent decades, great changes have taken place in the anesthesiology of China in anesthesia equipment, anesthesiology theory of basic, clinical research, and clinical anesthesia technology. Despite this, there is still a shortage of doctors with higher medical education in anesthesiology, which is also a major problem facing for anesthesia discipline of China, especially in Tibet, Xinjiang, and Inner Mongolia and other regions. Due to the high cold and low oxygen environment in the Tibet Autonomous Region, the development of medical education is backward, especially anesthesia medical education. With the improvement of anesthesia medical technology, we should continue to optimize and reform the local anesthesia medical teaching methods, so as to make substantial reform of anesthesia medical education in Tibet. This paper discusses the main problems in anesthesia medical education and clinical anesthesia in Tibet, as well as its reform ideas and methods. It aims to improve the level of anesthesiology education in Tibet, so as to improve the clinical professional ability of doctor anesthesia, and then better benefit to the local people.
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- 2023
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28. Regular exercise attenuates alcoholic myopathy in zebrafish by modulating mitochondrial homeostasis.
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Wei Wen, Cheng Guo, Zhanglin Chen, Dong Yang, Danting Zhu, Quwen Jing, Lan Zheng, Chenchen Sun, and Changfa Tang
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Medicine ,Science - Abstract
Alcoholic myopathy is caused by chronic consumption of alcohol (ethanol) and is characterized by weakness and atrophy of skeletal muscle. Regular exercise is one of the important ways to prevent or alleviate skeletal muscle myopathy. However, the beneficial effects and the exact mechanisms underlying regular exercise on alcohol myopathy remain unclear. In this study, a model of alcoholic myopathy was established using zebrafish soaked in 0.5% ethanol. Additionally, these zebrafish were intervened to swim for 8 weeks at an exercise intensity of 30% of the absolute critical swimming speed (Ucrit), aiming to explore the beneficial effects and underlying mechanisms of regular exercise on alcoholic myopathy. This study found that regular exercise inhibited protein degradation, improved locomotion ability, and increased muscle fiber cross-sectional area (CSA) in ethanol-treated zebrafish. In addition, regular exercise increases the functional activity of mitochondrial respiratory chain (MRC) complexes and upregulates the expression levels of MRC complexes. Regular exercise can also improve oxidative stress and mitochondrial dynamics in zebrafish skeletal muscle induced by ethanol. Additionally, regular exercise can activate mitochondrial biogenesis and inhibit mitochondrial unfolded protein response (UPRmt). Together, our results suggest regular exercise is an effective intervention strategy to improve mitochondrial homeostasis to attenuate alcoholic myopathy.
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- 2023
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29. Generation of an induced pluripotent stem cell JTUi005-A from a patient with neuronal intranuclear inclusion disease
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Yuwen Cao, Wotu Tian, Li Cao, WenLu Lv, Lan Zheng, and Xinghua Luan
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Biology (General) ,QH301-705.5 - Abstract
Neuronal intranuclear inclusion disease is a neurodegenerative disease caused by expansion of GGC repeats in the 5′ untranslated region (5′ UTR) of NOTCH2NLC. An induced pluripotent stem cell (iPSC) line was generated from peripheral blood mononuclear cells of a 55-year-old male patient by expressing a defined set of reprogramming factors (OCT4, SOX2, NANOG, LIN28, c-MYC and KLF4) carried on episomal vectors, and was validated for stem cell-like pluripotency, normal karyotype and capability of in vivo differentiation into three germ layers. The NIID-iPSC line serves as a promising tool for further research into pathogenic mechanism and potential therapeutic targets.
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- 2022
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30. Drosophila exercise, an emerging model bridging the fields of exercise and aging in human
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Meng Ding, Hongyu Li, and Lan Zheng
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Drosophila ,exercise ,aging ,obesity ,cardiac aging ,lipid metabolism ,Biology (General) ,QH301-705.5 - Abstract
Exercise is one of the most effective treatments for the diseases of aging. In recent years, a growing number of researchers have used Drosophila melanogaster to study the broad benefits of regular exercise in aging individuals. With the widespread use of Drosophila exercise models and the upgrading of the Drosophila exercise apparatus, we should carefully examine the differential contribution of regular exercise in the aging process to facilitate more detailed quantitative measurements and assessment of the exercise phenotype. In this paper, we review some of the resources available for Drosophila exercise models. The focus is on the impact of regular exercise or exercise adaptation in the aging process in Drosophila and highlights the great potential and current challenges faced by this model in the field of anti-aging research.
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- 2022
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31. Monitoring Inattention in Construction Workers Caused by Physical Fatigue Using Electrocardiograph (ECG) and Galvanic Skin Response (GSR) Sensors
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Yewei Ouyang, Ming Liu, Cheng Cheng, Yuchen Yang, Shiyi He, and Lan Zheng
- Subjects
HRV ,ECG ,GSR ,inattention ,physical fatigue ,Chemical technology ,TP1-1185 - Abstract
Physical fatigue is frequent for heavy manual laborers like construction workers, but it causes distraction and may lead to safety incidents. The purpose of this study is to develop predictive models for monitoring construction workers’ inattention caused by physical fatigue utilizing electrocardiograph (ECG) and galvanic skin response (GSR) sensors. Thirty participants were invited to complete an attention-demanding task under non-fatigued and physically fatigued conditions. Supervised learning algorithms were utilized to develop models predicting their attentional states, with heart rate variability (HRV) features derived from ECG signals and skin electric activity features derived from GSR signals as data inputs. The results demonstrate that using HRV features alone could obtain a prediction accuracy of 88.33%, and using GSR features alone could achieve an accuracy of 76.67%, both through the KNN algorithm. The accuracy increased to 96.67% through the SVM algorithm when combining HRV and GSR features. The findings indicate that ECG sensors used alone or in combination with GSR sensors can be applied to monitor construction workers’ inattention on job sites. The findings would provide an approach for detecting distracted workers at job sites. Additionally, it might reveal the relationships between workers’ physiological features and attention.
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- 2023
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32. Corrigendum: Exercise and/or Cold Exposure Alters the Gene Expression Profile in the Fat Body and Changes the Heart Function in Drosophila
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Ting Huang, Xiaoyi Jian, Jinglin Liu, Lan Zheng, Fang Qiu Li, Ding Meng, Tongquan Wang, Shihu Zhang, Yi Liu, Zhilong Guan, and Jiadong Feng
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exercise ,cold expose ,cardia function ,ucp4c ,SIRT1 ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Published
- 2022
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33. The mutational pattern of homologous recombination (HR)-associated genes and its relevance to the immunotherapeutic response in gastric cancer
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Yue Fan, Haifeng Ying, Xueying Wu, Huan Chen, Ying Hu, Henghui Zhang, Lijia Wu, Ying Yang, Beibei Mao, and Lan Zheng
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gastric cancer ,homologous recombination deficiency ,immunotherapy ,biomarker ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Objective: Currently, there is an urgent need to identify immunotherapeutic biomarkers to increase the benefit of immune checkpoint inhibitors (ICIs) for patients with gastric cancer (GC). Homologous recombination deficiency (HRD) can modify the tumor immune microenvironment by increasing the presence of tumor-infiltrating lymphocytes and therefore might serve as a biomarker of immunotherapeutic response. We aimed to analyze the mutational pattern of HR-associated genes in Chinese patients with GC and its relevance to the tumor immune profile and clinical immunotherapeutic response. Methods: A panel of 543 cancer-associated genes was used to analyze genomic profiles in a cohort comprising 484 Chinese patients with GC. Correlations between HR gene mutations and tumor immunity or clinical outcomes were identified via bioinformatic analysis using 2 GC genomic datasets (TCGA and MSK-IMPACT). Results: Fifty-one of the 484 (10.54%) patients carried at least one somatic mutation in an HR gene; ATM (16/484, 3.31%) was among the most frequently mutated HR genes in the Chinese cohort. Mutations in HR genes were associated with elevated tumor mutational burden, enhanced immune activity, and microsatellite instability status. In the MSK-IMPACT cohort comprising 49 patients with stomach adenocarcinoma or gastroesophageal junction adenocarcinoma treated with ICIs, patients with HR-mut GC (n = 12) had significantly better overall survival than those with HR-wt GC (n = 37) (log-rank test, P < 0.05). Conclusions: Our data suggest that detection of somatic mutations in HR genes might aid in identifying patients who might benefit from immune checkpoint blockade therapy.
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- 2020
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34. Exercise and/or Cold Exposure Alters the Gene Expression Profile in the Fat Body and Changes the Heart Function in Drosophila
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Ting Huang, Xiaoyi Jian, Jinglin Liu, Lan Zheng, Fang Qiu Li, Ding Meng, Tongquan Wang, Shihu Zhang, Yi Liu, Zhilong Guan, and Jiadong Feng
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exercise ,cold expose ,cardia function ,ucp4c ,SIRT1 ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
The major reason of human morbidity and mortality is obesity and related diseases. Brown adipose tissue (BAT) is associated with low total adipose tissue content and a lower risk of type 2 diabetes mellitus. Studies have shown that exercise and cold expose may induce browning. In this study, we verified (1) whether exercise and/or cold exposure can improve the expression level of ucp4c, serca, ampkα, camkII, sirt1, octβ3r, and hamlet; (2) if these interventions can save cardiac dysfunction induced by a high-fat diet (HFD) in Drosophila. w1118 (wild-type) virgin female flies collected within 8 h after eclosion were divided into eight groups: the normal feed control group (NFD-C), the normal feed exercise group (NFD-E), the normal feed cold exposure group (NFD-CA), the normal feed exercise/cold exposure group (NFD-EC), the HFD control group (HFD-C), the HFD exercise group (HFD-E), the HFD cold exposure group (HFD-CA), and the HFD exercise/cold exposure group (HFD-EC). After exercise and/or cold exposure for 7 days, the mRNA expression levels of ucp4c, serca, ampkα, camk II, sirt1, octβ3r, and hamlet were tested by qRT-PCR, and m-mode was used to assess cardiac function. In addition, we assessed the triacylglycerol (TAG) levels, motor ability, fat mass (by Oil Red O [ORO] staining), and morphological features. The results of TAG, ORO staining, and morphological features all indicate that after interventions, body size of Drosophila was smaller compared with the control group, irrespective of the feeding patterns. The mRNA expression levels of ucp4c, serca, octβ3r, hamlet, ampkα, camkII, and sirt1 were changed to varying degrees under different intervention states (exercise and/or cold exposure). Cold exposure and exercise/cold exposure partly improved cardiac function and the normal fruit flies’ cardiac function and exercise ability. However, after exercise intervention, exercise ability and heart function were improved in both HFD and normal-fat diet (NFD) fruit flies. In conclusion, different intervention states (exercise and/or cold exposure) can change the mRNA expression levels of ucp4c, serca, octβ3r, hamlet, ampkα, camkII, and sirt1. Exercise is the most effective way to restore HFD-induced cardiac dysfunction.
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- 2022
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35. Physical Exercise Repairs Obstructive Jaundice-Induced Damage to Intestinal Mucosal Barrier Function via H2S-Mediated Regulation of the HMGB1/Toll Like Receptors 4/Nuclear Factor Kappa B Pathway
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Changfeng Shao, Ye Li, Jiaqin Chen, Lan Zheng, Wei Chen, Qi Peng, Rui Chen, and Afang Yuan
- Subjects
aerobic exercise ,hydrogen sulfide ,obstructive jaundice ,intestinal mucosal barrier ,HMGB1/TLR4 ,Physiology ,QP1-981 - Abstract
The present study aimed to determine the effect of aerobic exercise on improving damage to intestinal mucosal barrier function caused by obstructive jaundice (OJ) and explore the mechanism. Fifty male KM mice were divided into five groups: sham operation group (S), model group (M), exercise group (TM), DL-propargylglycine + exercise (PT) group, and sodium hydrosulfide + exercise (NT) group. Additionally, mice in S group underwent common bile duct ligation for 48 h to establish a murine obstructive jaundice model. In PT group, propargylglycine (40 mg/kg) was intraperitoneally injected 7 days after surgery. NaHS (50 μmol/kg) was intraperitoneally injected into mice in the NT group 7 days after surgery. The TM group, NT group and PT group exercised on a slope of 0% at a speed of 10 m/min without weight training (30 min/day). HE staining showed that the intestinal mucosa of group M was atrophied and that the villi were broken. The intestinal mucosal structure of mice in the TM group was improved. Serum assays showed that H2S levels were higher in the TM group than in the M group; compared with the levels in the TM group, the PT group levels were decreased and the NT group levels were increased. In addition, aerobic exercise inhibits the HMGB1/TLR4/NF-κB signaling pathway by promoting endogenous H2S production, thereby exerting a protective effect on the intestinal mucosal barrier.
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- 2022
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36. Effects of Drosophila melanogaster regular exercise and apolipoprotein B knockdown on abnormal heart rhythm induced by a high-fat diet.
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Meng Ding, Qui Fang Li, Guo Yin, Jing Lin Liu, Xiao Yi Jan, Ting Huang, Ai Chun Li, and Lan Zheng
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Medicine ,Science - Abstract
Abnormal heart rhythm is a common cardiac dysfunction in obese patients, and its pathogenesis is related to systemic lipid accumulation. The cardiomyocyte-derived apoLpp (homologous gene in Drosophila of the human apolipoprotein B) plays an important role in whole-body lipid metabolism of Drosophila under a high-fat diet (HFD). Knockdown of apoLpp derived from cardiomyocytes can reduce HFD-induced weight gain and abdominal lipid accumulation. In addition, exercise can reduce the total amount of apoLpp in circulation. However, the relationship between regular exercise, cardiomyocyte-derived apoLpp and abnormal heart rhythm is unclear. We found that an HFD increased the level of triglyceride (TG) in the whole-body, lipid accumulation and obesity in Drosophila. Moreover, the expression of apoLpp in the heart increased sharply, the heart rate and arrhythmia index increased and fibrillation occurred. Conversely, regular exercise or cardiomyocyte-derived apoLpp knockdown reduced the TG level in the whole-body of Drosophila. This significantly reduced the arrhythmia induced by obesity, including the reduction of heart rate, arrhythmia index, and fibrillation. Under HFD conditions, flies with apoLpp knockdown in the heart could resist the abnormal cardiac rhythm caused by obesity after receiving regular exercise. HFD-induced obesity and abnormal cardiac rhythm may be related to the acute increase of cardiomyocyte-derived apoLpp. Regular exercise and inhibition of cardiomyocyte-derived apoLpp can reduce the HFD-induced abnormal cardiac rhythm.
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- 2022
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37. High Expression of PDLIM2 Predicts a Poor Prognosis in Prostate Cancer and Is Correlated with Epithelial-Mesenchymal Transition and Immune Cell Infiltration
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Songzhe Piao, Lan Zheng, Haihong Zheng, Mengya Zhou, Qin Feng, Suna Zhou, Mang Ke, Haihua Yang, and Xuequan Wang
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Immunologic diseases. Allergy ,RC581-607 - Abstract
Purpose. To elucidate the clinical and prognostic role of PDZ and LIM domain protein (PDLIM) genes and the association to epithelial-mesenchymal transition (EMT) and immune cell infiltration in patients with prostate cancer (PRAD). Methods. The data of RNA-seq, DNA methylation, and clinical features of PRAD patients were collected from The Cancer Genome Atlas (TCGA) database to define the prognostic value of PDLIM gene expression and the association with EMT and immune cell infiltration. A tissue microarray including 134 radical prostatectomy specimens was served as validation by immunohistochemistry (IHC) staining analysis. Results. The mRNA levels of PDLIM1/2/3/4/6/7 were significantly downregulated, while PDLIM5 was upregulated in PRAD (P
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- 2022
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38. Peripheral Inflammatory Biomarkers of Methamphetamine Withdrawal Patients Based on the Neuro-Inflammation Hypothesis: The Possible Improvement Effect of Exercise
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Jingsong Wang, Chunxia Lu, Lan Zheng, and Jun Zhang
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aerobic combined resistance training ,IL-1β ,TNF-α ,IL-6 ,craving degree ,Psychiatry ,RC435-571 - Abstract
Methamphetamine (MA) induced addiction and neuroinflammation has been implicated. Based on the neuroinflammation hypothesis, this study aims to investigate how exercise influences the craving of patients in MA withdrawal, and explore the mechanism of peripheral inflammation. A total of 90 patients in MA withdrawal were recruited. No difference was noted in the number of years of drug use and the frequency of drug use among patients, and the withdrawal time was within 2 months. The subjects were grouped based on the degree of craving induced by the cues: non-craving control group (NCC group), craving control group (CC group), and craving exercise group (CE group). The CE group was subjected to aerobic combined resistance training. Then, the ELISA method was used to detect plasma IL-6, TNF-α, and IL-1β concentrations; Visual Analog Scale (VAS) measurement of cue-induced cravings under Virtual Reality (VR) exposure (VR-VAS) and the Desires for Drug Questionnaire (DDQ) were used to assess cravings. Consequently, plasma IL-6, TNF-α, IL-1β, levels, and the VR-VAS and DDQ scores of MA withdrawal patients were significantly reduced after exercise. This study confirmed that 8 weeks of incremental load aerobic combined with resistance training reduces peripheral inflammation and significantly reduces the level of craving for MA.
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- 2021
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39. Descended Social Anxiety Disorder and Craving in Women Heroin Dependence Through Exercise Alerts Plasma Oxytocin Levels
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Jing Song Wang, Jing Lin Liu, Jun Zhang, Jun Tan, Ting Huang, Chun Xia Lu, Xi Yang Peng, Yin Guo, and Lan Zheng
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exercise ,oxytocin ,SAD ,VAS ,DDQ ,craving ,Psychiatry ,RC435-571 - Abstract
Purpose: This study explored the association between peripheral blood oxytocin (OT) and social anxiety disorder (SAD) and cue-induced cravings in female heroin addicts. The effect of exercise on alleviation of SAD and OT levels was also explored.Methods: A total of 72 females with heroin dependence were assigned to three groups based on SAD severity. The three groups were Non-SAD control, SAD control, and SAD exercise groups. Subjects in the SAD exercise group underwent aerobic exercise and resistance training for 8 weeks (60 min/day, 5 days/week). Enzyme-linked immunosorbent assay analysis and Liebowitz Social Anxiety Scale (LSAS) scores were used to determine plasma OT concentration and SAD, respectively. Cue-induced craving was assessed using Visual Analog Scale (VAS) and Desires for Drug Questionnaire (DDQ). Mixed-effect analysis of variance and Pearson correlation analysis were used to explore the effect and correlation between different parameters.Results: OT levels in the SAD exercise group were significantly high after exercise (p < 0.01). LSAS, VAS, and DDQ (“Desire and Intention” and “Negative reinforcement”) scores in the SAD exercise group were significantly lower after exercise (p < 0.01). Plasma OT level was negatively correlated with LSAS score (r = −0.534, p < 0.001), VAS score (r = −0.609, p < 0.001), “Desire and Intention” score (r = −0.555, p < 0.001), and “Negative reinforcement” score (r = −0.332, p < 0.01) and positively correlated with the “control” score (r = 0.258, p < 0.05). LSAS was positively correlated with VAS score (r = 0.588, p < 0.001) and “Desire and Intention” score (r = 0.282, p < 0.05).Conclusions: The findings of the present study indicate that plasma OT is a potential peripheral biomarker for prediction of the severity of social anxiety in female heroin withdrawal patients. Aerobic exercise combined with resistance training plus incremental load for 8 weeks can increase plasma OT levels and significantly reduce severity of SAD and cue-induced cravings in female heroin addicts.
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- 2021
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40. Spatiotemporal characteristics and primary influencing factors of typical dengue fever epidemics in China
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Lan Zheng, Hong-Yan Ren, Run-He Shi, and Liang Lu
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Spatiotemporal pattern ,China ,Dengue fever ,Generalized additive model ,Socioeconomic factor ,Environmental factor ,Infectious and parasitic diseases ,RC109-216 ,Public aspects of medicine ,RA1-1270 - Abstract
Abstract Background Dengue fever (DF) is a common mosquito-borne viral infectious disease in the world, and increasingly severe DF epidemics in China have seriously affected people’s health in recent years. Thus, investigating spatiotemporal patterns and potential influencing factors of DF epidemics in typical regions is critical to consolidate effective prevention and control measures for these regional epidemics. Methods A generalized additive model (GAM) was used to identify potential contributing factors that influence spatiotemporal epidemic patterns in typical DF epidemic regions of China (e.g., the Pearl River Delta [PRD] and the Border of Yunnan and Myanmar [BYM]). In terms of influencing factors, environmental factors including the normalized difference vegetation index (NDVI), temperature, precipitation, and humidity, in conjunction with socioeconomic factors, such as population density (Pop), road density, land-use, and gross domestic product, were employed. Results DF epidemics in the PRD and BYM exhibit prominent spatial variations at 4 km and 3 km grid scales, characterized by significant spatial clustering over the Guangzhou-Foshan, Dehong, and Xishuangbanna areas. The GAM that integrated the Pop-urban land ratio (ULR)-NDVI-humidity-temperature factors for the PRD and the ULR-Road density-NDVI-temperature-water land ratio-precipitation factors for the BYM performed well in terms of overall accuracy, with Akaike Information Criterion values of 61 859.89 and 826.65, explaining a total variance of 83.4 and 97.3%, respectively. As indicated, socioeconomic factors have a stronger influence on DF epidemics than environmental factors in the study area. Among these factors, Pop (PRD) and ULR (BYM) were the socioeconomic factors explaining the largest variance in regional epidemics, whereas NDVI was the environmental factor explaining the largest variance in both regions. In addition, the common factors (ULR, NDVI, and temperature) in these two regions exhibited different effects on regional epidemics. Conclusions The spatiotemporal patterns of DF in the PRD and BYM are influenced by environmental and socioeconomic factors, the socioeconomic factors may play a significant role in DF epidemics in cases where environmental factors are suitable and differ only slightly throughout an area. Thus, prevention and control resources should be fully allocated by referring to the spatial patterns of primary influencing factors to better consolidate the prevention and control measures for DF epidemics.
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- 2019
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41. Exercise Training Upregulates Cardiac mtp Expression in Drosophila melanogaster with HFD to Improve Cardiac Dysfunction and Abnormal Lipid Metabolism
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Tianhang Peng, Meng Ding, Hanhui Yan, Qiufang Li, Ping Zhang, Rui Tian, and Lan Zheng
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Drosophila ,mtp ,cardiac dysfunction ,exercise training ,lipid metabolism ,β-oxidation ,Biology (General) ,QH301-705.5 - Abstract
Current evidence suggests that the heart plays an important role in regulating systemic lipid homeostasis, and high-fat diet (HFD)-induced obesity is a major cause of cardiovascular disease, although little is known about the specific mechanisms involved. Exercise training can reportedly improve abnormal lipid metabolism and cardiac dysfunction induced by high-fat diets; however, the molecular mechanisms are not yet understood. In the present study, to explore the relationship between exercise training and cardiac mtp in HFD flies and potential mechanisms by which exercise training affects HFD flies, Drosophila was selected as a model organism, and the GAL4/UAS system was used to specifically knock down the target gene. Experiments revealed that HFD-fed Drosophila exhibited changes in body weight, increased triglycerides (TG) and dysregulated cardiac contractility, consistent with observations in mammals. Interestingly, inhibition of cardiac mtp expression reduced HFD-induced cardiac damage and mitigated the increase in triglycerides. Further studies showed that in HFD +w1118, HFD + Hand > w1118, and HFD+ Hand > mtpRNAi, cardiac mtp expression downregulation induced by HFD was treated by exercise training and mitochondrial β-oxidation capacity in cardiomyocytes was reversed. Overall, knocking down mtp in the heart prevented an increase in systemic TG levels and protected cardiac contractility from damage caused by HFD, similar to the findings observed after exercise training. Moreover, exercise training upregulated the decrease in cardiac mtp expression induced by HFD. Increased Had1 and Acox3 expression were observed, consistent with changes in cardiac mtp expression.
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- 2022
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42. Exercise-Training Regulates Apolipoprotein B in Drosophila to Improve HFD-Mediated Cardiac Function Damage and Low Exercise Capacity
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Meng Ding, Lan Zheng, Qiu Fang Li, Wan Li Wang, Wan Da Peng, and Meng Zhou
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apolipoprotein B ,exercise-training ,cardiac dysfunction ,lipid metabolism ,Drosophila ,exercise capacity ,Physiology ,QP1-981 - Abstract
Apolipoprotein B plays an essential role in systemic lipid metabolism, and it is closely related to cardiovascular diseases. Exercise-training can regulate systemic lipid metabolism, improve heart function, and improve exercise capacity, but the molecular mechanisms involved are poorly understood. We used a Drosophila model to demonstrate that exercise-training regulates the expression of apoLpp (a homolog of apolipoprotein B) in cardiomyocytes, thereby resisting heart insufficiency and low exercise capacity caused by obesity. The apoLpp is an essential lipid carrier produced in the heart and fat body of Drosophila. In a Drosophila genetic screen, low expression of apoLpp reduced obesity and cardiac dysfunction induced by a high-fat diet (HFD). Cardiac-specific inhibition indicated that reducing apoLpp in the heart during HFD reduced the triglyceride content of the whole-body and reduced heart function damage caused by HFD. In exercise-trained flies, the result was similar to the knockdown effect of apoLpp. Therefore, the inhibition of apoLpp plays an important role in HFD-induced cardiac function impairment and low exercise capacity. Although the apoLpp knockdown of cardiomyocytes alleviated damage to heart function, it did not reduce the arrhythmia and low exercise capacity caused by HFD. Exercise-training can improve this condition more effectively, and the possible reason for this difference is that exercise-training regulates climbing ability in ways to promote metabolism. Exercise-training during HFD feeding can down-regulate the expression of apoLpp, reduce the whole-body TG levels, improve cardiac recovery, and improve exercise capacity. Exercise-training can downregulate the expression of apoLpp in cardiomyocytes to resist cardiac function damage and low exercise capacity caused by HFD. The results revealed the relationship between exercise-training and apoLpp and their essential roles in regulating heart function and climbing ability.
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- 2021
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43. Overexpression of Interferon-Inducible Protein 16 Promotes Progression of Human Pancreatic Adenocarcinoma Through Interleukin-1β-Induced Tumor-Associated Macrophage Infiltration in the Tumor Microenvironment
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Jing-Xian Chen, Chien-Shan Cheng, Hong-Fang Gao, Zi-Jie Chen, Ling-Ling Lv, Jia-Yue Xu, Xiao-Heng Shen, Jing Xie, and Lan Zheng
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IFI16 ,inflammasome ,pancreatic adenocarcinoma ,tumor-associated macrophages ,IL-1β ,Biology (General) ,QH301-705.5 - Abstract
Activation of inflammasomes has been reported in human pancreatic adenocarcinoma (PAAD); however, the expression pattern and functional role of inflammasome-related proteins in PAAD have yet to be identified. In this study, we systemically examined the expression and role of different inflammasome proteins by retrieving human expression data. Several genes were found to be differentially expressed; however, only interferon-inducible protein 16 (IFI16) expression was found to be adversely correlated with the overall survival of PAAD patients. Overexpression of IFI16 significantly promoted tumor growth, increased tumor size and weight in the experimental PAAD model of mice, and specifically increased the population of tumor-associated macrophages (TAMs) in the tumor microenvironment. Depletion of TAMs by injection of liposome clodronate attenuated the IFI16 overexpression-induced tumor growth in PAAD. In vitro treatment of conditioned medium from IFI16-overexpressing PAAD cells induced maturation, proliferation, and migration of bone marrow-derived monocytes, suggesting that IFI16 overexpression resulted in cytokine secretion that favored the TAM population. Further analysis suggested that IFI16 overexpression activated inflammasomes, thereby increasing the release of IL-1β. Neutralization of IL-1β attenuated TAM maturation, proliferation, and migration induced by the conditioned medium from IFI16-overexpressing PAAD cells. Additionally, knockdown of IFI16 could significantly potentiate gemcitabine treatment in PAAD, which may be associated with the reduced infiltration of TAMs in the tumor microenvironment. The findings of our study shed light on the role of IFI16 as a potential therapeutic target for PAAD.
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- 2021
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44. Skeletal-Muscle-Specific Overexpression of Chrono Leads to Disruption of Glucose Metabolism and Exercise Capacity
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Shiyi He, Lu Yan, Rongxin Zhu, Hao Wei, Jianxiong Wang, Lan Zheng, and Ying Zhang
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glucose metabolism ,skeletal muscle ,Chrono ,exercise capacity ,mice ,Science - Abstract
Disruption of circadian rhythms is related to disorders of glucose metabolism, and the molecular clock also exists in skeletal muscle. The ChIP-derived repressor of network oscillator (Chrono) and brain and muscle ARNT-like 1 (Bmal1) are core circadian components. Chrono is considered to be the repressor of Bmal1, and the Chrono–Bmal1 pathway is important in regulating the circadian rhythm; it has been speculated that this pathway could be a new mechanism for regulating glucose metabolism. The purpose of this study was to investigate the effects of Chrono on glucose metabolism in skeletal muscle and exercise capacity by using mice with skeletal-muscle-specific overexpression of Chrono (Chrono TG) and wild-type (WT) mice as the animal models. The results of this cross-sectional study indicated that the Chrono TG mice had an impaired glucose tolerance, lower exercise capacity, and higher levels of nonfasted blood glucose and glycogen content in skeletal muscle compared to WT mice. In addition, the Chrono TG mice also showed a significant increase in the amount of Chrono bound to Bmal1 according to a co-IP analysis; a remarkable decrease in mRNA expression of Tbc1d1, Glut4, Hk2, Pfkm, Pdp1, Gbe1, and Phka1, as well as in activity of Hk and protein expression of Ldhb; but higher mRNA expression of Pdk4 and protein expression of Ldha compared with those of WT mice. These data suggested the skeletal-muscle-specific overexpression of Chrono led to a greater amount of Chrono bound to Bmal1, which then could affect the glucose transporter, glucose oxidation, and glycogen utilization in skeletal muscle, as well as exercise capacity.
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- 2022
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45. Intestinal Health of Pigs Upon Weaning: Challenges and Nutritional Intervention
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Lan Zheng, Marcos Elias Duarte, Ana Sevarolli Loftus, and Sung Woo Kim
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feed additives ,intestinal health ,newly weaned pigs ,nutritional intervention ,weaning stress ,Veterinary medicine ,SF600-1100 - Abstract
The primary goal of nursery pig management is making a smooth weaning transition to minimize weaning associated depressed growth and diseases. Weaning causes morphological and functional changes of the small intestine of pigs, where most of the nutrients are being digested and absorbed. While various stressors induce post-weaning growth depression, the abrupt change from milk to solid feed is one of the most apparent challenges to pigs. Feeding functional feed additives may be viable solutions to promote the growth of nursery pigs by enhancing nutrient digestion, intestinal morphology, immune status, and by restoring intestinal balance. The aim of this review was to provide available scientific information on the roles of functional feed additives in enhancing intestinal health and growth during nursery phase. Among many potential functional feed additives, the palatability of the ingredient and the optimum supplemental level are varied, and these should be considered when applying into nursery pig diets. Considering different stressors pigs deal with in the post-weaning period, research on nutritional intervention using a single feed additive or a combination of different additives that can enhance feed intake, increase weight gain, and reduce mortality and morbidity are needed to provide viable solutions for pig producers. Further research in relation to the feed palatability, supplemental level, as well as interactions between different ingredients are needed.
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- 2021
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46. Identification of Potentially Relevant Genes for Excessive Exercise-Induced Pathological Cardiac Hypertrophy in Zebrafish
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Zuoqiong Zhou, Lan Zheng, Changfa Tang, Zhanglin Chen, Runkang Zhu, Xiyang Peng, Xiushan Wu, and Ping Zhu
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pathological cardiac hypertrophy ,RNA-seq ,autophagy ,FoxO signaling pathway ,excessive exercise ,Physiology ,QP1-981 - Abstract
Exercise-induced cardiac remodeling has aroused public concern for some time, as sudden cardiac death is known to occur in athletes; however, little is known about the underlying mechanism of exercise-induced cardiac injury. In the present study, we established an excessive exercise-induced pathologic cardiac hypertrophy model in zebrafish with increased myocardial fibrosis, myofibril disassembly, mitochondrial degradation, upregulated expression of the pathological hypertrophy marker genes in the heart, contractile impairment, and cardiopulmonary function impairment. High-throughput RNA-seq analysis revealed that the differentially expressed genes were enriched in the regulation of autophagy, protein folding, and degradation, myofibril development, angiogenesis, metabolic reprogramming, and insulin and FoxO signaling pathways. FOXO proteins may be the core mediator of the regulatory network needed to promote the pathological response. Further, PPI network analysis showed that pik3c3, gapdh, fbox32, fzr1, ubox5, lmo7a, kctd7, fbxo9, lonrf1l, fbxl4, nhpb2l1b, nhp2, fbl, hsp90aa1.1, snrpd3l, dhx15, mrto4, ruvbl1, hspa8b, and faub are the hub genes that correlate with the pathogenesis of pathological cardiac hypertrophy. The underlying regulatory pathways and cardiac pressure-responsive molecules identified in the present study will provide valuable insights for the supervision and clinical treatment of pathological cardiac hypertrophy induced by excessive exercise.
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- 2020
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47. Sorafenib for treating head and neck adenocarcinoma of unknown primary site: a case report
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Jingxian Chen, Chien-shan Cheng, Jie Chen, Lingling Lv, Xiaoheng Shen, and Lan Zheng
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Medicine (General) ,R5-920 - Abstract
The aim of the present study was to report a rare case of head and neck adenocarcinoma with an unknown primary site in a 59-year-old man. After disease progression followed by multiple cycles of chemotherapy and radiotherapy, genetic screening using next-generation sequencing identified vascular endothelial growth factor A amplification and the TP53 R209Kfs mutation. Treatment with the multi-targeted protein kinase inhibitor sorafenib controlled the patient’s symptoms and improved his quality of life.
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- 2020
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48. Plasma BDNF and TrkB mRNA in PBMCs Are Correlated With Anti-depressive Effects of 12-Weeks Supervised Exercise During Protracted Methamphetamine Abstinence
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Jue Yang, Jun Tan, Lan Zheng, Chun Xia Lu, Wen Qi Hou, Yi Liu, Qiu Fang Li, Jin Xiu Li, Dan Cheng, Xu Luo, and Jun Zhang
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methamphetamine withdrawal ,neurotrophin ,neurotrophin receptor ,exercise intervention ,depression ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Purpose: The aim of this study was to evaluate the potential neurotrophic factors and expression of neurotrophin receptors in peripheral blood mononuclear cells linked with the antidepressant action of exercise intervention during protracted methamphetamine (METH) abstinence.Materials and Methods: A total of 72 male METH addicts, including 47 individuals with depression and 25 individuals without depression, were recruited in this study. Individuals with depression were divided into the depression control group and the depression exercised group. Consequently, 12 weeks of supervised exercise intervention was applied. Depression and anxiety were analyzed; plasma brain-derived neurotrophic factor (BDNF), neuronal growth factor (NGF), neurotrophin-3 (NT-3), NT-4, and proBDNF levels were tested using enzyme-linked immunosorbent assay; the mRNA expressions of TrkA, TrkB-FL, TrkB-T1, TrkCB, and P75NTR in peripheral blood mononuclear cells were detected by quantitative real-time polymerase chain reaction (qRT-PCR).Results: NT-4 plasma levels were correlated with depression (r = −0.330, p = 0.005), which remained significant after Bonferroni correction. In addition, the BDNF and NT-3 levels in the plasma were significantly correlated with depression (r = −0.268, p = 0.023; r = −0.259, p = 0.028), but did not reach significance after Bonferroni correction. The BDNF, NT-3, and NT-4 plasma levels were significantly different between the depressive control group and the depressive exercise group using pre-exercise values as the covariate. The fold changes in TrkB-FL and TrkB-T1 mRNA in peripheral blood mononuclear cells between the post-exercise and pre-exercise demonstrated a remarkable decrease (fold change = −11.056 and −39.055).Conclusions: Exercise intervention can alleviate depression and anxiety during protracted METH abstinence. Decrease in BDNF and the expression of TrkB in peripheral blood mononuclear cells occur following the exercise intervention.
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- 2020
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49. Effects of dietary supplementation with detoxified sap on egg production, yolk lipid and intestinal microflora in laying hens
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Byoung-Ki An, Je-Hun Kim, Lan Zheng, Byung-Hern Moon, and Kyung-Woo Lee
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Lipid Metabolism ,Laying Performance ,Egg Quality ,Laying Hens ,Animal culture ,SF1-1100 ,Animal biochemistry ,QP501-801 - Abstract
Objective This study was conducted to investigate the effects of dietary detoxified Rhus verniciflua sap (RVS) on production performance, egg quality, lipid fractions of egg yolk, liver and serum, and the profile of cecal microflora in laying hens. Methods Two hundred 52-week-old Hy-Line Brown layers were randomly divided into 4 groups with 5 replicates per group (2 hens per cage, 5 cages per replicate) and were provided with one of 4 experimental diets containing 0%, 0.05%, 0.1%, or 0.2% RVS, for 6 weeks. Due to unequal intervals of RVS doses, the interactive matrix language procedure of the SAS program was used to correct the contrast coefficients of orthogonal polynomials. Results There were no differences in feed intake and egg weight among the groups. Egg production increased (linearly and quadratically, p
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- 2018
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50. Hepatoid adenocarcinoma of the lung accompanied with multiple systemic metastases
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Jing-Xian Chen, Ling-Ling Lyu, Wen-Hua Zhu, Xiao-Yan Chen, Lan Zheng, and Li-Shao Guo
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Medicine - Published
- 2021
- Full Text
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