330 results on '"Jia Huo"'
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2. Recommendations for managing adult acne and adolescent acne based on an epidemiological study conducted in China
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Yan-ting Liu, Ya-wen Wang, Chen Tu, Jian-wen Ren, Jia Huo, Xiao-juan Nan, Jia-hao Dou, Zi-he Peng, and Wei-hui Zeng
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Acne ,Adult ,Adolescent ,Epidemiology ,Medicine ,Science - Abstract
Abstract There are numerous differences between adult acne and adolescent acne in terms of causes, distribution, and characteristics of skin lesions, as well as treatment. This paper aims to summarize the differences between adult and adolescent acne in China, in order to propose more suitable ways to improve their quality of life. We collected basic information, acne-related information, acne-affecting factors, quality of life scores and treatment-related information of acne patients. A total of 552 questionnaires were collected. Adult acne is typically predominant on the cheeks, similar to adolescent acne, with a relatively lower incidence in other areas, apart from the jawline. Pigmentation and depressed scars are present in nearly half of acne patients, while hypertrophic scars are less frequently observed. Teenagers often have a higher consumption of dairy products, sugary drinks, and high-sugar and high-fat foods. Eczema is more common in adult acne. Additionally, more adults than teenagers experience stress and poor quality of life related to acne. Adolescents are more likely to seek treatment online and on social media. Clinicians must thoroughly evaluate diverse risk factors and formulate personalized acne management strategies for patients with different types of acne.
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- 2024
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3. Assessment of Rab geranylgeranyltransferase subunit beta in amyotrophic lateral sclerosis
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Jing Yang, Mei Tian, Lei Zhang, Cheng Xin, Jia Huo, Qi Liu, Hui Dong, Rui Li, and Yaling Liu
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RABGGTB ,mononuclear cells-macrophages ,ALS ,PD ,ACVD ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
IntroductionGeranylgeranyltransferase Subunit Beta (RABGGTB) was expressed at higher levels in patients with Amyotrophic lateral sclerosis (ALS) compared with healthy controls. This study aims to observe the expression of RABGGTB in different cells from patients with ALS and different diseases.MethodsIn this case–control study, we collected peripheral blood from patients with ALS and healthy controls, and compared the expression of RABGGTB in natural killer cells (NK), T cells and B cells between patients with ALS and healthy controls by flow cytometry. And compared the expression of RABGGTB in monocytes and monocyte-derived macrophages from patients with ALS, Parkinson’s disease (PD), acute cerebrovascular disease (ACVD), and healthy controls by flow cytometry and immunofluorescence. Then flow cytometry was used to detect the expression of RABGGTB in monocytes from SOD1G93A mice and WT mice.ResultsThe expression of RABGGTB was not significantly changed in NK cells, cytotoxic T cells (CTL), helper T cells (Th), regulatory T cells (Treg), and B cells from patients with ALS compared to healthy controls. And the expression of RABGGTB in monocytes and monocyte-derived macrophages was higher in the ALS group than in the PD, ACVD and control group. The expression of RABGGTB was significantly higher in monocytes of SOD1G93A mice compared to WT mice.ConclusionThese findings suggest that RABGGTB expression was increased in monocytes and monocyte-derived macrophages from patients with ALS, not in NK, CTL, Th, Treg, and B cells. Future studies are needed to find the clinical implication of RABGGTB in ALS.
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- 2024
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4. Facile Preparation of TiO2NTs/Au@MOF Nanocomposites for High-Sensitivity SERS Sensing of Gaseous VOC
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Chunyan Wang, Yina Jiang, Yuyu Peng, Jia Huo, and Ban Zhang
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surface-enhanced Raman spectroscopy (SERS) ,gas ,volatile organic compounds ,nanocomposite ,Chemical technology ,TP1-1185 - Abstract
Surface-enhanced Raman spectroscopy (SERS) is a promising and highly sensitive molecular fingerprint detection technology. However, the development of SERS nanocomposites that are label-free, highly sensitive, selective, stable, and reusable for gaseous volatile organic compounds (VOCs) detection remains a challenge. Here, we report a novel TiO2NTs/AuNPs@ZIF−8 nanocomposite for the ultrasensitive SERS detection of VOCs. The three-dimensional TiO2 nanotube structure with a large specific surface area provides abundant sites for the loading of Au NPs, which possess excellent local surface plasmon resonance (LSPR) effects, further leading to the formation of a large number of SERS active hotspots. The externally wrapped porous MOF structure adsorbs more gaseous VOC molecules onto the noble metal surface. Under the synergistic mechanism of physical and chemical enhancement, a better SERS enhancement effect can be achieved. By optimizing experimental conditions, the SERS detection limit for acetophenone, a common exhaled VOC, is as low as 10−11 M. And the relative standard deviation of SERS signal intensity from different points on the same nanocomposite surface is 4.7%. The acetophenone gas achieves a 1 min response and the signal reaches stability in 4 min. Under UV irradiation, the surface-adsorbed acetophenone can be completely degraded within 40 min. The experimental results demonstrate that this nanocomposite has good detection sensitivity, repeatability, selectivity, response speed, and reusability, making it a promising sensor for gaseous VOCs.
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- 2024
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5. RABGGTB plays a critical role in ALS pathogenesis
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Haiyang Ma, Jia Huo, Cheng Xin, Jing Yang, Qi Liu, Hui Dong, Rui Li, and Yaling Liu
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Amyotrophic lateral sclerosis ,TDP-25 ,NSC34-hSOD1G93A ,RABGGTB ,Autophagy ,Protein prenylation ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease with unknown causes, which mainly affects motor neurons in the anterior horn of the spinal cord, brain stem, and cerebral cortex, also known as motor neuron disease. An important pathological feature of ALS is the formation of aggregates of mutant SOD1 protein, CTF25 of TDP-43, or other abnormal proteins in motor neurons, which require autophagy for degradation. Protein prenylation is known to participate in membrane association and proper localization of proteins. RABGGTB is the β subunit of GGTase II (one of the prenyltransferases) that can regulate autophagy via Rab7 geranylgeranylation. In this study, we overexpressed RABGGTB via lentiviral transfection in NSC34-hSOD1G93A and TDP-43 cells. Overexpression of RABGGTB improved ALS cell proliferation by facilitating autophagosome–lysosome fusion. Furthermore, the abnormal aggregation of SOD1 protein was reduced. This indicates that protein prenylation is important for the proliferation and autophagy of cells autophagy. Enhanced autophagy has been observed in two of the most widely used ALS cell models. These findings indicate the widespread applicability of prenylation in ALS. In summary, overexpression of RABGGTB improved the geranylgeranylation of the Rab7 protein and had a positive effect on cells. These findings provide insights into the development of a novel therapeutic strategy for ALS.
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- 2024
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6. The indications for core decompression surgery in patients with ARCO stage I-II osteonecrosis of the femoral head: a new, comprehensive prediction system
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Congcong Wei, Meng Yang, Kun Chu, Jia Huo, Xiao Chen, Bo Liu, and Huijie Li
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Core decompression ,Osteonecrosis ,Predictive model ,Indication ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background Core decompression (CD) is considered the most popular treatment method for patients with Association Research Circulation Osseous (ARCO) stage I-II osteonecrosis of the femoral head (ONFH). However, the definitive indication for CD is currently not well established. Methods This was a retrospective cohort study. Patients who were diagnosed with ARCO stage I-II ONFH and who underwent CD were included. According to the prognosis, the patients were divided into two groups: collapse of the femoral head after CD and noncollapse of the femoral head. Independent risk factors for the failure of CD treatment were identified. Subsequently, a new scoring system that included all these risk factors was built to help estimate the individual risk of CD failure in patients who were planning to undergo CD. Results The study included 1537 hips after decompression surgery. The overall failure rate of CD surgery was 52.44%. Seven independent prognostic factors for failed CD surgery were identified, such as male sex (HR = 75.449; 95% confidence interval (CI), 42.863-132.807), Aetiology (Idiopathic HR = 2.762; 95% CI, 2.016–3.788, Steroid-induced HR = 2.543; 95% CI, 1.852–3.685), if the patient had a seated occupation (HR = 3.937; 95% CI, 2.712–5.716), age (HR = 1.045; 95% CI, 1.032–1.058), haemoglobin level (HR = 0.909; 95% CI, 0.897–0.922), disease duration (HR = 1.217; 95% CI, 1.169–1.267) and the combined necrosis angle (HR = 1.025; 95% CI, 1.022–1.028). The final scoring system included these seven risk factors, and the area under the curve of this scoring system was 0.935 (95% confidential interval = 0.922–0.948). Conclusion This new scoring system might provide evidence-based medical proof for determining whether a patient with ARCO stage I - II ONFH might benefit from CD surgery. This scoring system is crucial for making clinical decisions. Consequently, this scoring system is recommended before CD surgery, which could help determine the potential prognosis of patients.
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- 2023
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7. Femoral neck fracture patients with ischaemic stroke choose hemiarthroplasty or constrained liner total hip arthroplasty? A retrospective comparative study of 199 cases
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Jia Huo, Sikai Liu, Mengnan Li, Zeming Liu, Xuzhuang Ding, Bo Liu, Huijie Li, and Yongtai Han
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femoral neck fracture ,dislocation ,ischaemic stroke ,total hip arthroplasty ,hemiarthroplasty ,constrained liner ,Surgery ,RD1-811 - Abstract
BackgroundThe objective of this study was to assess the long-term survival rate, complications, as well as the clinical and radiological outcomes of hemiarthroplasty and total hip arthroplasty using constrained polyethylene liners in patients with ischemic stroke.MethodsThis study was a retrospective cohort study that included patients with ischemic stroke who underwent hip arthroplasty from March 2010 to September 2017. In the Constrained Acetabular Liners (CAL) group, patients received an uncemented acetabular shell with a constrained polyethylene liner. The Dual Mobility (DM) group underwent hemiarthroplasty (HA). Additionally, hip function, range of motion, quality of life, the incidence of clinical complications, and prosthesis stability were investigated.Results96 patients with unilateral femoral neck fractures who underwent hip replacement with CAL were included in the CAL group, while 103 patients who underwent hip replacement with a dual mobility head were included in the DM group. VAS, and SF-36 data were available for both CAL and DM groups. At the 1-year postoperative follow-up, the HHS in the CAL group was significantly lower than that in the DM group (80.83 ± 3.91 vs. 83.17 ± 4.15, P
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- 2023
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8. Clinical and radiologic outcomes in patients undergoing primary total hip arthroplasty with Collum Femoris Preserving stems: a comparison between the direct anterior approach and the posterior approach
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Bingshi Zhang, Sikai Liu, Zeming Liu, Bo Liu, Jia Huo, Mengnan Li, and Yongtai Han
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Direct anterior approach ,Posterior approach ,Collum femoris preserving ,Total hip arthroplasty ,Outcomes ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background The direct anterior approach (DAA) and posterior approach (PA) are two of the most common surgical approaches used for total hip arthroplasty (THA) worldwide. The curved anatomical collum femoris-preserving (CFP) stem was designed to preserve the bone of the femoral neck and allow physiologic load transfer along the trabecular systems, which may better restore hip biomechanics, improve triplanar stem stability and improve the long-term survival rate. We believe this study will demonstrate whether the DAA is suitable for THA with CFP stems. Methods The data of patients who underwent primary THA with CFP stems from January 2010 to December 2015 were retrospectively analysed. These patients were divided into two groups (group A, DAA; group B, PA). The approach was selected by the surgeon. The demographic characteristics, preoperative diagnoses, preoperative Harris hip score, preoperative range of motion, postoperative complications, and radiologic measurements (neck-shaft angle, coronal alignment, sagittal alignment, stress shielding, anteversion, neck-preserving ratio, acetabular anteversion, acetabular inclination angle, acetabular depth, anterior-posterior offset, lateral offset, difference in leg length) were recorded for all patients. Results In this study, a total of 248 patients (185 male and 63 female) were included. No significant differences were found between group A and group B in terms of general patient information and radiologic measurements. However, the rate of nerve injury in group A (7/5.5%) was significantly higher than that in group B (1/0.8%) (p = 0.037). At 1 month after surgery, we found a significant difference between the two groups in the Harris hip score (HHS) (71.03 ± 8.04 in group A, 68.39 ± 8.37 in group B, P = 0.014) and forgotten joint score (FJS-12) (50.78 ± 7.57 in group A, 47.68 ± 7.34 in group B, P = 0.001). At 1 year after surgery, the mean FJS-12 score in group A (68.78 ± 7.54) was higher than that in group B (58.84 ± 8.91) (P
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- 2022
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9. Protective effects of intrathecal injection of AAV9-RabGGTB-GFP+ in SOD1G93A mice
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Tianchu Gao, Jia Huo, Cheng Xin, Jing Yang, Qi Liu, Hui Dong, Rui Li, and Yaling Liu
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amyotrophic lateral sclerosis ,SOD1G93A ,intrathecal injection of AAV ,motoneuron ,RabGGTB ,SOD1 aggregation ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
IntroductionAmyotrophic lateral sclerosis (ALS) is a neurodegenerative disease that widely affects motor neurons of the CNS. About 20% of patients with ALS have familial ALS (fALS). One of the classic models of ALS are SOD1G93A mice. Misfolded SOD1 protein can be overexpressed in motor neurons, which results in progressive paralysis of the limbs of mice. There is still no effective treatment for ALS. In recent years, the treatment of ALS by regulating autophagy has become a research hotspot. Autophagy obstacles have been confirmed to be one of the early pathological events of ALS. Rab7 is a member of the Ras superfamily and plays a key role in the late stage of autophagy. In our previous studies, we found that prenoylation of Rab7 was inhibited in the ALS model. Prenylation is a post-translational modification in which farnesyl or geranylgeranyl groups are covalently linked to target proteins. Based on these findings, we proposed the novel idea that the regulation of RabGGTB (the β-subunit of RabGGTase) mediated prenylation modification of Rab7, and that this can be used as a prevention and treatment of ALS associated with abnormal protein accumulation.MethodsIn the present study, RabGGTB was overexpressed in mouse spinal cord motoneurons by using adeno-associated virus as vector. Then immunofluorescence quantitative analysis was used for pathological study. The body weight, footprint analysis, the accelerating rotarod test, and neurological deficits score were used to evaluate animal behavior.ResultsOur results show that the protein level of RabGGTB was significantly increased in the lumbar and thoracic regions of spinal cord motoneurons of injected mice. Furthermore, the onset time and survival time of SOD1G93A mice injected with AAV9-RabGGTB-GFP+ were delayed compared with those of mice without overexpression. At the same time, we also observed a decrease in SOD1 misfolded and glial overactivation in the lumbar spinal cord of these SOD1G93A mice.ConclusionThe findings reported here show that RabGGTB plays a significant role in the pathogenesis of SOD1G93A mice and with great therapeutic potential for reducing abnormal aggregation of SOD1 in ALS.
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- 2023
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10. The diagnostic value of blood metagenomic next-generation sequencing in patients with acute hematogenous osteomyelitis
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Bingshi Zhang, Xiao Chen, Xiaowei Yao, Mengnan Li, Zhijie Li, Bo Liu, Sikai Liu, Zeming Liu, Jia Huo, and Yongtai Han
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diagnostic test ,metagenomic next-generation sequencing (mNGS) ,infection ,osteomyelitis (OM) ,blood ,Microbiology ,QR1-502 - Abstract
AimsThis study aims to evaluate the diagnostic value of blood metagenomic next-generation sequencing (mNGS) in detecting pathogens from patients clinically diagnosed as acute hematogenous osteomyelitis (AHO).MethodsThis retrospective study enrolled 66 patients with AHO. The test results of mNGS and bacterial culture on different samples, including blood and puncture fluid samples, from patients with AHO were compared to explore the diagnostic value of blood mNGS. Besides, this study also explored the efficacy of blood mNGS in decision making for antibiotic administration and analyzed the factors associated with the positive result of blood mNGS.ResultsThe most common causative pathogens were Staphylococcus and Streptococcus. The sensitivity of blood mNGS (77.3%) was higher than that of blood culture (42.4%) (P38.5°C; OR=17.2, 95% CI = 2.0-149.1 for patients who were chilling), and no use of antibiotics before sampling (OR=8.9, 95% CI =1.4-59.0).ConclusionThis is the first report on evaluating and emphasizing the importance of blood mNGS in diagnosing AHO. Blood sample might be an alternative sample for puncture fluid for mNGS, and its extensive application in diagnosing AHO could be expected.
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- 2023
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11. Rab Geranylgeranyltransferase Subunit Beta as a Potential Indicator to Assess the Progression of Amyotrophic Lateral Sclerosis
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Jing Yang, Cheng Xin, Jia Huo, Xin Li, Hui Dong, Qi Liu, Rui Li, and Yaling Liu
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amyotrophic lateral sclerosis (ALS) ,monocyte ,macrophages ,Rab geranylgeranyltransferase subunit beta (RABGGTB) ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Background: Currently, there is no effective treatment for amyotrophic lateral sclerosis (ALS), a devastating neurodegenerative disorder. Many biomarkers have been proposed, but because ALS is a clinically heterogeneous disease with an unclear etiology, biomarker discovery for ALS has been challenging due to the lack of specificity of these biomarkers. In recent years, the role of autophagy in the development and treatment of ALS has become a research hotspot. In our previous studies, we found that the expression of RabGGTase (low RABGGTB expression and no change in RABGGTA) is lower in the lumbar and thoracic regions of spinal cord motoneurons in SOD1G93A mice compared with WT (wild-type) mice groups, and upregulation of RABGGTB promoted prenylation modification of Rab7, which promoted autophagy to protect neurons by degrading SOD1. Given that RabGGTase is associated with autophagy and autophagy is associated with inflammation, and based on the above findings, since peripheral blood mononuclear cells are readily available from patients with ALS, we proposed to investigate the expression of RabGGTase in peripheral inflammatory cells. Methods: Information and venous blood were collected from 86 patients diagnosed with ALS between January 2021 and August 2023. Flow cytometry was used to detect the expression of RABGGTB in monocytes from peripheral blood samples collected from patients with ALS and healthy controls. Extracted peripheral blood mononuclear cells (PBMCs) were differentiated in vitro into macrophages, and then the expression of RABGGTB was detected by immunofluorescence. RABGGTB levels in patients with ALS were analyzed to determine their impact on disease progression. Results: Using flow cytometry in monocytes and immunofluorescence in macrophages, we found that RABGGTB expression in the ALS group was significantly higher than in the control group. Age, sex, original location, disease course, C-reactive protein (CRP), and interleukin-6 (IL-6) did not correlate with the ALS functional rating scale—revised (ALSFRS-R), whereas the RABGGTB level was significantly correlated with the ALSFRS-R. In addition, multivariate analysis revealed a significant correlation between RABGGTB and ALSFRS-R score. Further analysis revealed a significant correlation between RABGGTB expression levels and disease progression levels (ΔFS). Conclusions: The RABGGTB level was significantly increased in patients with ALS compared with healthy controls. An elevated RABGGTB level in patients with ALS is associated with the rate of progression in ALS, suggesting that elevated RABGGTB levels in patients with ALS may serve as an indicator for tracking ALS progression.
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- 2023
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12. Does drainage affect development of heterotopic ossification after total hip arthroplasty?
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Congcong Wei, Meng Yang, Kun Chu, Jia Huo, Xiao Chen, and Huijie Li
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Medicine (General) ,R5-920 - Abstract
Objective To investigate the effect of drainage on heterotopic ossification (HO) after total hip arthroplasty (THA) and to evaluate other postoperative complications and joint dysfunction between patients with and without drainage. Methods In this retrospective cohort study, the medical records of patients who underwent THA from 2017 to 2019 were reviewed. The patients were divided into a drainage group and non-drainage group. Standard preoperative anteroposterior and lateral radiographs were assessed by senior radiologists for HO analysis. Clinical indicators included the hemoglobin concentration, superficial infection, blood transfusion, hematoma formation, hip range of motion (ROM), erythrocyte sedimentation rate, C-reactive protein concentration, dressing changes, visual analogue scale score, and Harris Hip Score (HHS). Results The incidence of HO was significantly higher in the drainage than non-drainage group (32.0% vs. 16.3%). The presence of severe HO (Brooker grade III or IV) was also different between the groups. Patients in the non-drainage group had smaller ROM early after surgery, but the final ROM and HHS did not differ significantly between the groups. Conclusions The rate and degree of HO after THA were significantly different between patients with and without drainage. There is no added advantage of closed suction drainage over no drainage in primary THA.
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- 2022
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13. Ultrathin Trimetal–Organic Framework Nanosheet Electrocatalysts for the Highly Efficient Oxygen Evolution Reaction
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Songyang Niu, Chenhui Li, Jia Huo, Wanrong Dong, Samir El Hankari, Yu Liang, and Qiling Li
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Chemistry ,QD1-999 - Published
- 2021
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14. Short uncemented femoral component for hip revision: prognosis and risk factors associated with failure
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Zeming Liu, Bo Liu, Bingshi Zhang, Wenhui Ma, Tao Wu, Jia Huo, Sikai Liu, and Yongtai Han
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Hip revision ,Short stem ,Uncemented ,Surgery ,RD1-811 - Abstract
Abstract Background The application of short femoral stems is partially restricted in revision surgery. This study will demonstrate the therapeutic effect and unsuitable situation for short stem revision. Methods Demographic characteristics of all patients were recorded in detail (Table 1). Anteroposterior view radiographic examinations of proximal femur are necessary before and after the operation for patients. The primary outcome of interest was the survival rate of the femoral stem at the final follow-up. Risk factors for failure were also investigated. The secondary outcomes of interest included the Harris hip score, excellent to good rate and incidence of complications. The Mann–Whitney U test was performed for comparisons between continuous variables. The chi-square test was performed for comparisons between categorical variables. Cox regression analysis was used to assess the association between potential risk factors and the failure of revision surgery. Results A total of 381 patients with short stems were retrospectively reviewed. There were 188 males and 193 females. The average age and body mass index before revision surgery were 58.85 ± 13.46 years and 23.72 ± 3.40 kg/m2, respectively. The mid-term survival rate of the short femoral component was 94.23%. The prognosis and complications of patients between the two groups were compared. There was no significant difference between the two groups in the Harris score, complication incidence or survival rate of the femoral component. The strongest risk factor in this study was intraoperative periprosthetic femoral fracture during revision surgery (HR = 5.477, 95% CI = 2.156–13.913). Conclusion Three risk factors for failure were identified: ageing, osteoporosis and intraoperative periprosthetic femoral fracture during revision surgery. Therefore, a short femoral stem should be implanted in patients with these risk factors with additional caution.
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- 2021
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15. Simvastatin accelerated motoneurons death in SOD1G93A mice through inhibiting Rab7-mediated maturation of late autophagic vacuoles
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Lin Bai, Yafei Wang, Jia Huo, Shuai Li, Ya Wen, Qi Liu, Jing Yang, Yaling Liu, and Rui Li
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Cytology ,QH573-671 - Abstract
Abstract Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease caused by motoneuron loss, for which there is currently no effective treatment. Statins, as inhibitors of 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase, are used as drugs for treatment for a variety of disease such as ischemic diseases, neurodegenerative diseases, cancer, and inflammation. However, our previous evidence has demonstrated that simvastatin leads to cytotoxicity in NSC34-hSOD1G93A cells by aggravating the impairment of autophagic flux, but the role of simvastatin in ALS model remains elusive. In present study, we reported that after simvastatin treatment, SOD1G93A mice showed early onset of the disease phenotype and shortened life span, with aggravated autophagic flux impairment and increased aggregation of SOD1 protein in spinal cord motoneurons (MNs) of SOD1G93A mice. In addition, simvastatin repressed the ability of Rab7 localization on the membrane by inhibiting isoprenoid synthesis, leading to impaired late stage of autophagic flux rather than initiation. This study suggested that simvastatin significantly worsened impairment of late autophagic flux, resulting in massive MNs death in spinal cord and accelerated disease progression of SOD1G93A mice. Together, these findings might imply a potential risk of clinic application of statins in ALS.
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- 2021
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16. Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070
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Bei You, Yuoli Tuo, Chengzhe Li, Wei Wang, Shuang-Nan Zhang, Shu Zhang, Mingyu Ge, Chong Luo, Bifang Liu, Weimin Yuan, Zigao Dai, Jifeng Liu, Erlin Qiao, Chichuan Jin, Zhu Liu, Bozena Czerny, Qingwen Wu, Qingcui Bu, Ce Cai, Xuelei Cao, Zhi Chang, Gang Chen, Li Chen, Tianxiang Chen, Yibao Chen, Yong Chen, Yupeng Chen, Wei Cui, Weiwei Cui, Jingkang Deng, Yongwei Dong, Yuanyuan Du, Minxue Fu, Guanhua Gao, He Gao, Min Gao, Yudong Gu, Ju Guan, Chengcheng Guo, Dawei Han, Yue Huang, Jia Huo, Shumei Jia, Luhua Jiang, Weichun Jiang, Jing Jin, Yongjie Jin, Lingda Kong, Bing Li, Chengkui Li, Gang Li, Maoshun Li, Tipei Li, Wei Li, Xian Li, Xiaobo Li, Xufang Li, Yanguo Li, Zhengwei Li, Xiaohua Liang, Jinyuan Liao, Congzhan Liu, Guoqing Liu, Hongwei Liu, Xiaojing Liu, Yinong Liu, Bo Lu, Fangjun Lu, Xuefeng Lu, Qi Luo, Tao Luo, Xiang Ma, Bin Meng, Yi Nang, Jianyin Nie, Ge Ou, Jinlu Qu, Na Sai, Rencheng Shang, Liming Song, Xinying Song, Liang Sun, Ying Tan, Lian Tao, Chen Wang, Guofeng Wang, Juan Wang, Lingjun Wang, Wenshuai Wang, Yusa Wang, Xiangyang Wen, Baiyang Wu, Bobing Wu, Mei Wu, Guangcheng Xiao, Shuo Xiao, Shaolin Xiong, Yupeng Xu, Jiawei Yang, Sheng Yang, Yanji Yang, Qibin Yi, Qianqing Yin, Yuan You, Aimei Zhang, Chengmo Zhang, Fan Zhang, Hongmei Zhang, Juan Zhang, Tong Zhang, Wanchang Zhang, Wei Zhang, Wenzhao Zhang, Yi Zhang, Yifei Zhang, Yongjie Zhang, Yue Zhang, Zhao Zhang, Ziliang Zhang, Haisheng Zhao, Xiaofan Zhao, Shijie Zheng, Dengke Zhou, Jianfeng Zhou, Yuxuan Zhu, and Yue Zhu
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Science - Abstract
Evolution of accretion disk and corona during outbursts in black hole binary systems is still unclear. Here, the authors show spectral analysis of MAXI J1820+070 and propose a scenario of a dynamical corona to explain the evolution of the reflection fraction observed by Insight-HXMT.
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- 2021
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17. As an unusual traumatic presentation, acetabular fracture and concomitant ipsilateral intertrochanteric femur fracture: a retrospective case series of 18 patients
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Bo Liu, Wenhui Ma, Sikai Liu, Xiao Chen, Mengnan Li, Jia Huo, Huijie Li, and Yongtai Han
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Fracture ,Dislocation ,Acetabulum ,Intertrochanteric fracture ,Orthopedic surgery ,RD701-811 ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background Acetabular fracture and concomitant ipsilateral intertrochanteric femur fracture has been suggested as an unusual traumatic presentation and rarely reported in the literature. The aims of this study were (1) to identify the etiological characteristics, (2) to summarize the treatment strategy, and (3) to present the mid- to long-term results of patients with this rare traumatic presentation. Methods In this retrospective study, 18 patients (15 males, 3 females; mean age = 42.77 ± 17.74 years, range = 16 to 87 years) who were diagnosed and treated for simultaneous acetabular fracture and ipsilateral intertrochanteric fracture were included. Injury mechanisms, fracture classifications, and treatment strategies were noted. To assess functional status, the Harris score was used. To evaluate pain intensity, visual analogous scale (VAS) was used. The reduction quality of acetabular fractures was examined as per Matta’s standard. Postoperative complications were also recorded. Results The mean follow-up was 10.04 ± 3.38 (range = 6.2 to 16 years). The most common injury mechanism was traffic accident, followed by falling from a tall height. As per the Evans classification, intertrochanteric fractures were defined as type 3 in 13 patients, type 2 in one patient, and type 4 in 4 patients. In acetabular fracture site, the most common fractures were posterior wall fractures, followed by anterior column fractures. All patients received internal fixation for their intertrochanteric fractures. Ten out of 18 patients also received internal fixation for their acetabular fracture. However, for the remaining patients, acetabular fractures were treated conservatively or with fracture fragment resection. Bony healing was achieved in all but one patient who died postoperatively. Twelve patients achieved excellent and good results (Harris score ≥ 80 points) whereas five patients achieved fair and poor results (Harris score < 80 points). The proportion of patients who achieved an excellent-good Harris score was 70.6%. Dislocation of the hip was found to be an independent risk factor (HR = 9.194, 95% CI = 1.024-82.515) for the poor patient outcome. Conclusion To sum up, high-impact trauma is the main cause of acetabular fracture and concomitant ipsilateral intertrochanteric femur fracture. For patients who have undergone surgical treatment, fracture healing is usually achieved. However, the occurrence of complications, especially avascular necrosis, is the major cause of a poor prognosis. Dislocation of the hip joint at the time of injury is considered to be an important risk factor for a poor prognosis.
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- 2020
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18. Value of preoperative three-dimensional planning software (AI-HIP) in primary total hip arthroplasty: a retrospective study
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Xuzhuang Ding, Bingshi Zhang, Wenao Li, Jia Huo, Sikai Liu, Tao Wu, and Yongtai Han
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Medicine (General) ,R5-920 - Abstract
Objective We performed a retrospective study to compare the accuracy of preoperative planning using three-dimensional AI-HIP software and traditional two-dimensional manual templating to predict the size and position of prostheses. The purpose of this study was to evaluate the accuracy of AI-HIP in preoperative planning for primary total hip arthroplasty. Methods In total, 316 hips treated from April 2019 to June 2020 were retrospectively reviewed. A typical preoperative planning process for patients was implemented to compare the accuracy of the two preoperative planning methods with respect to prosthetic size and position. Intraclass correlation coefficients (ICCs) were used to evaluate the homogeneity between the actual prosthetic size and position and the preoperative planning method. Results When AI-HIP software and manual templating were used for preoperative planning, the stem agreement was 87.7% and 58.9%, respectively, and the cup agreement was 94.0% and 65.2%, respectively. The results showed that when AI-HIP software was used, an extremely high level of consistency (ICC > 0.95) was achieved for the femoral stem size, cup size, and femoral osteotomy level (ICC = 0.972, 0.962, and 0.961, respectively). Conclusion AI-HIP software showed excellent reliability for predicting the component size and implant position in primary total hip arthroplasty.
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- 2021
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19. Aqueous Synthesis of a Mesoporous Zr-Based Coordination Polymer for Removal of Organic Dyes
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Chenjia Liang, Junhao Ren, Samir El Hankari, and Jia Huo
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Chemistry ,QD1-999 - Published
- 2019
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20. Curcumin promotes AApoAII amyloidosis and peroxisome proliferation in mice by activating the PPARα signaling pathway
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Jian Dai, Ying Li, Fuyuki Kametani, Xiaoran Cui, Yuichi Igarashi, Jia Huo, Hiroki Miyahara, Masayuki Mori, and Keiichi Higuchi
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amyloidosis ,PPARα ,curcumin ,peroxisome ,Medicine ,Science ,Biology (General) ,QH301-705.5 - Abstract
Curcumin is a polyphenol compound that exhibits multiple physiological activities. To elucidate the mechanisms by which curcumin affects systemic amyloidosis, we investigated amyloid deposition and molecular changes in a mouse model of amyloid apolipoprotein A-II (AApoAII) amyloidosis, in which mice were fed a curcumin-supplemented diet. Curcumin supplementation for 12 weeks significantly increased AApoAII amyloid deposition relative to controls, especially in the liver and spleen. Liver weights and plasma ApoA-II and high-density lipoprotein concentrations were significantly elevated in curcumin-supplemented groups. RNA-sequence analysis revealed that curcumin intake affected hepatic lipid metabolism via the peroxisome proliferator-activated receptor (PPAR) pathway, especially PPARα activation, resulting in increased Apoa2 mRNA expression. The increase in liver weights was due to activation of PPARα and peroxisome proliferation. Taken together, these results demonstrate that curcumin is a PPARα activator and may affect expression levels of proteins involved in amyloid deposition to influence amyloidosis and metabolism in a complex manner.
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- 2021
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21. Coenzyme Q10 Improves Lipid Metabolism and Ameliorates Obesity by Regulating CaMKII-Mediated PDE4 Inhibition
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Zhe Xu, Jia Huo, Xin Ding, Mu Yang, Lin Li, Jian Dai, Kazunori Hosoe, Hiroshi Kubo, Masayuki Mori, Keiichi Higuchi, and Jinko Sawashita
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Medicine ,Science - Abstract
Abstract Our recent studies revealed that supplementation with the reduced form of coenzyme Q10 (CoQ10H2) inhibits oxidative stress and slows the process of aging in senescence-accelerated mice. CoQ10H2 inhibits adipocyte differentiation and regulates lipid metabolism. In the present study, we show that dietary supplementation with CoQ10H2 significantly reduced white adipose tissue content and improved the function of brown adipose tissue by regulating expression of lipid metabolism-related factors in KKAy mice, a model of obesity and type 2 diabetes. In the liver, CoQ10H2 reduced cytoplasmic Ca2+ levels and consequently inhibited the phosphorylation of CaMKII. CoQ10H2 also regulated the activity of the transcription factor C-FOS and inhibited gene expression of PDE4, a cAMP-degrading enzyme, via the CaMKII-MEK1/2-ERK1/2 signaling pathway, thereby increasing intracellular cAMP. This increased cAMP activated AMPK, enhanced oxidative decomposition of lipids, and inhibited de novo synthesis of fatty acids, inhibiting the development and progression of obesity and type 2 diabetes. These results suggest that CoQ10H2 supplementation may be useful as a treatment for metabolic disorders associated with obesity.
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- 2017
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22. Three-dimensional hierarchical MoS2/CoS2 heterostructure arrays for highly efficient electrocatalytic hydrogen evolution
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Canbin Ouyang, Shi Feng, Jia Huo, and Shuangyin Wang
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Renewable energy sources ,TJ807-830 ,Ecology ,QH540-549.5 - Abstract
Developing non-expensive, highly active and highly stable electrocatalysts for hydrogen evolution has aroused extensive attention, owing to the necessity of novel clean and sustainable energy carriers. In this paper, we report a synthesis of free-standing three-dimensional hierarchical MoS2/CoS2 heterostructure arrays through a convenient process. The investigation of electrocatalytic HER performance suggests that the MoS2/CoS2 hybrid catalyst exhibits significant enhancement in HER (onsetpotential and potential at a current density of 100Â mAÂ cmâ2 are 20Â mV and 125Â mV, respectively) and superior durability (no shift of current density is observed after a continuous scanning of 3000 times) compared with individual CoS2 and MoS2. The superior HER performance was attributed to the formation of the interface between CoS2 and MoS2 through the electrochemical characterization, Raman, XPS analysis, and the control experiment. The lower onsetpotential, higher current density, excellent durability, and the free-standing structure of the three-dimensional hierarchical MoS2/CoS2 heterostructure array make it a promising cathode catalyst suitable for widespread application. Keywords: MoS2/CoS2, Heterostructure array, Free-standing, Hydrogen evolution reaction
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- 2017
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23. Terminalia Chebulanin Attenuates Psoriatic Skin Lesion via Regulation of Heme Oxygenase-1
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Jingang An, Tian Li, Yingying Dong, Zhengxiao Li, and Jia Huo
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Terminalia chebulanin ,Psoriasis ,Heme oxygenase-1 ,NF-κB ,Inflammation ,Physiology ,QP1-981 ,Biochemistry ,QD415-436 - Abstract
Background/Aims: Psoriasis is one of the most common inflammatory skin disorders, affecting 3% of the general population. Terminalia chebulanin (TC) is a polyphenolic compound that possesses antioxidant and anti-inflammatory activities. The current study was designed to investigate the effect of TC on psoriatic lesions. Methods: We examined the protective effect of TC against psoriatic lesions in mice and keratinocyte proliferation in HaCaT cells. Results: We found that TC exhibited potent anti-psoriatic activities, as evidenced by improvement of erythema and scaling scores, decrease of epidermal, ear and skinfold thickening, decrease of tumor necrosis factor α (TNFα), interleukin (IL)-17A, IL-23 and matrix metalloproteinase (MMP)-9 expression, and decrease of TBARS content and increase of GSH content in IMQ-treated mice, and decrease of keratinocyte proliferation, TNFα, IL-17A and IL-23 expression, and ROS level in M5-treated cells. All those effects induced by TC were inhibited by zinc protoporphyrin IX (ZnPP), an inhibitor of heme oxygenase (HO)-1, indicating that HO-1 was responsible the anti-psoriatic effect of TC. Moreover, TC inhibited the upregulation of p65 NF-κB under in vitro psoriatic condition. ZnPP suppressed TC-induced inhibition of p65 NF-κB expression. Overexpression of p65 NF-κB significantly suppressed TC-induced decrease of TNFα, IL-17A and IL-23 expression and keratinocyte proliferation, indicating that HO-1-mediated downregulation of NF-κB was involved in the anti-psoriatic effect of TC. Conclusions: The data demonstrate that TC may serve as a potential therapeutic option for psoriatic patients.
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- 2016
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24. Association between Carotid Artery Stenosis and Cognitive Impairment in Stroke Patients: A Cross-Sectional Study.
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Wei Yue, Anxin Wang, Runxiu Zhu, Zhongrui Yan, Shouhuan Zheng, Jingwei Wang, Jia Huo, Yunlin Liu, Xin Li, and Yong Ji
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Medicine ,Science - Abstract
To investigate potential associations between carotid artery stenosis and cognitive impairment among patients with acute ischemic stroke and to provide important clinical implications. We measured the degree of carotid artery stenosis and recorded the Mini-Mental State Examination score (MMSE) at admission in 3116 acute ischemic stroke patients. The association between carotid stenosis and cognitive impairment assessed by MMSE was tested using multivariate regression analysis. Other clinical variables of interest were also studied. After adjusting for age, gender, education level, marriage, alcohol use, tobacco use, physical activity, hypertension, diabetes, hypercholesterolemia, atrial fibrillation, myocardial infarction and NIHSS (National Institutes of Health Stroke Scale) score, we found that participants with high-grade stenosis of the carotid artery had a higher likelihood of cognitive impairment compared to those without carotid artery stenosis (OR = 1.49, 95%CI: 1.05-2.11, p
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- 2016
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25. A linear calibration method on DNL error for energy spectrum
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Bo, Lu, Yan-Hong, Fu, Yong, Chen, Wei-Wei, Cui, Yu-Sa, Wang, Yu-Peng, Xu, Guo-He, Yin, Yan-Ji, Yang, Yi, Zhang, Jia, Huo, Wei, Li, Tian-Xiang, Cheng, Wei, Hu, Da-Wei, Han, Mao-Shun, Li, Juan, Wang, Yu, Wang, Xiao-Yang, Liu, Yue, Zhu, Zhong-Yi, Zhao, and Ya, Zhang
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Astrophysics - Instrumentation and Methods for Astrophysics ,Physics - Instrumentation and Detectors - Abstract
A calibration method aimed for the differential nonlinearity (DNL) error of the Low Energy X-ray Instrument (LE) onboard the Hard X-ray Modulation Telescope (HXMT) is presented, which is independent with electronic systems used as testing platform and is only determined by the analog-to-digital converter (ADC) itself. Exploring this method, ADCs that are used within the flight model phase of HXMT-LE can be calibrated individually and independently by a non-destructive and low-cost way, greatly alleviating the complexity of the problem. As a result, the performance of the energy spectrum can be significantly improved, further more, noise reduced and resolution enhanced.
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- 2014
26. Measurements of Charge Transfer Efficiency in a Proton-irradiated Swept Charge Device
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YuSa, Wang, Yong, Chen, XiaoYan, Liu, WeiWei, Cui, YuPeng, Xu, ChengKui, Li, MaoShun, Li, DaWei, Han, TianXiang, Chen, Jia, Huo, Juan, Wang, Wei, Li, Wei, Hu, Yi, Zhang, Bo, Lu, GuoHe, Yin, Yue, Zhu, and ZiLiang, Zhang
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Astrophysics - Instrumentation and Methods for Astrophysics ,Physics - Instrumentation and Detectors - Abstract
Charge Coupled Devices (CCDs) have been successfully used in several low energy X-ray astronomical satellite over the past two decades. Their high energy resolution and high spatial resolution make them an perfect tool for low energy astronomy, such as formation of galaxy clusters and environment of black holes. The Low Energy X-ray Telescope (LE) group is developing Swept Charge Device (SCD) for the Hard X-ray Modulation Telescope (HXMT) satellite. SCD is a special low energy X-ray CCD, which could be read out a thousand times faster than traditional CCDs, simultaneously keeping excellent energy resolution. A test method for measuring the charge transfer efficiency (CTE) of a prototype SCD has been set up. Studies of the charge transfer inefficiency (CTI) have been performed at a temperature range of operation, with a proton-irradiated SCD.
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- 2013
27. Activation of iridium site by anchoring ruthenium atoms on defects for efficient anodic catalyst in polymer electrolyte membrane water electrolyzers
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Shiqian Du, Ru Chen, Wei Chen, Hongmei Gao, Jianfeng Jia, Zhaohui Xiao, Chao Xie, Hao Li, Li Tao, Jia Huo, Yanyong Wang, and Shuangyin Wang
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Fuel Technology ,Electrochemistry ,Energy Engineering and Power Technology ,Energy (miscellaneous) - Published
- 2022
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28. CircNRIP1 Exerts Oncogenic Functions in Papillary Thyroid Carcinoma by Sponging miR-653-5p and Regulating PBX3 Expression
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Lijun Fu, Jia Huo, Habibullah Fitrat, Yujing Kong, Lingyu Zhang, Chaoyang Shang, Guoquan Li, Feihong Ji, Xinghao Fu, and Xinguang Qiu
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endocrine system diseases ,Article Subject ,Oncology - Abstract
Background. Circular RNA circ_0004771 (termed circNRIP1) was identified by RNA-Seq previously and was elevated in papillary thyroid carcinoma (PTC) tissues. A series of studies also showed that circNRIP1 was upregulated in some tumors and could promote the malignant progression of tumors. This research intended to focus on the role of circNRIP1 in PTC progression and explore the mechanisms underlying circNRIP1 functions. Methods. RT-PCR or western blot determined circNRIP1, miR-653-5p, and pre-B-cell leukemia homeobox 3 (PBX3) expression. EdU, CCK-8, Tunel, and transwell assays determined cell proliferation, apoptosis, invasion, and migration, respectively. Luciferase reporter assay, RNA immunoprecipitation (RIP), and RNA pull down assays clarified the target relation between miR-653-5p and circNRIP1 or PBX3. Xenograft models were applied to explore the role of circNRIP1 in vivo. Results. circNRIP1 significantly increased in PTC tissues and PTC cell lines than that in normal ones. Higher circNRIP1 expression was associated with the TNM stage and poorer overall survival. circNRIP1 knockdown attenuated the malignant progression of PTC, specifically by inhibiting proliferation and invasion/migration and promoting apoptosis. circNRIP1 was a miR-653-5p sponge; miR-653-5p knockdown reversed the suppressive role of circNRIP1 silence in PTC progression. PBX3, a target of miR-653-5p, was positively medicated through circNRIP1 via competitively sponging miR-653-5p. Knockdown of circNRIP1 attenuated the PTC tumor progression via miR-653-5p/PBX3 axis. Conclusion. Silencing of circNRIP1 suppressed PTC development via miR-653-5p elevation and PBX3 reduction, providing a novel perspective for understanding PTC pathogenesis.
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- 2022
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29. Cobalt-regulation-induced dual active sites in Ni2P for hydrazine electrooxidation
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Bo Zhou, Mengyu Li, Yingying Li, Yanbo Liu, Yuxuan Lu, Wei Li, Yujie Wu, Jia Huo, Yanyong Wang, Li Tao, and Shuangyin Wang
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General Medicine - Published
- 2022
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30. IL-10 contributes to gemcitabine resistance in extranodal NK/T-cell lymphoma cells via ABCC4
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Jia, Huo, Lijun, Fu, Mengyuan, Jin, Zhaoming, Li, and Mingzhi, Zhang
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Lymphoma, Extranodal NK-T-Cell ,Pharmacology ,Oncology ,Drug Resistance, Neoplasm ,Humans ,Pharmacology (medical) ,Multidrug Resistance-Associated Proteins ,Deoxycytidine ,Gemcitabine ,Interleukin-10 - Abstract
Background Chemotherapy resistance is a main reason for treatment failure in extranodal NK/T-cell lymphoma (ENKTL). Interleukin-10 (IL-10) is closely related to the occurrence and prognosis of ENKTL. We intended to study the role and molecular mechanism of IL-10 in ENKTL resistance. Methods Fifty serum samples were collected from patients with a histologically proven diagnosis of ENKTL. Fifty healthy volunteers were enrolled as a control group. The level of serum IL-10 was detected by ELISA. The NK/T-cell lymphoma cell lines YT and NK-92 were divided into the control group (untreated), IL-10 group (treated with IL-10), IL-10 + GEM group (treated with IL-10 and gemcitabine simultaneously) and GEM group (treated with gemcitabine). A CCK8 assay and flow cytometry were employed to detect the effects of IL-10 on each group. Western blotting was applied to detect the expression of ABC membrane transporter family proteins and signaling pathway proteins in each group. Results Serum IL-10 levels were higher in ENKTL patients as well asin patients with ineffective treatment. The IC50 value for gemcitabine in YT and NK-92 cells increased significantly in the presence of IL-10. The effects of gemcitabine resulting in cell killing, cell cycle arrest, and apoptosis promotion were also weakened by IL-10. The expression of ABCC4, STAT1, p-STAT1, Tyk2 and p-Tyk2 was significantly increased by IL-10. Conclusion Our results indicate that IL-10 contributes to the resistance of ENKTL cells via ABCC4 and that IL-10 regulates the JAK/STAT signaling pathway in YT and NK-92 cells.
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- 2022
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31. Understanding and application of metal–support interactions in catalysts for CO-PROX
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Ganghua Xiang, Jia Huo, and Zhigang Liu
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General Physics and Astronomy ,Physical and Theoretical Chemistry - Abstract
Metal–support interactions can be utilized as a powerful tool to improve the activity of supported metal catalysts for CO-PROX reactions.
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- 2022
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32. Tri-Lock Bone Preservation Stem Versus Conventional Corail Stem in Primary Total Hip Arthroplasty via Direct Anterior Approach: A Short-Term, Retrospective, Comparative Study
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Kun Chu, Yuchuan Wang, Meng Yang, Congcong Wei, Jia Huo, Mengxuan Yao, Zihang Li, and Huijie Li
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General Medicine - Published
- 2023
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33. Single-Machine Scheduling with Step-Deteriorating Jobs and Rejection
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Fan-Yu Kong, Cui-Xia Miao, Yu-Jia Huo, Jia-Xin Song, and Yu-Zhong Zhang
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Management Science and Operations Research - Published
- 2023
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34. Efficacy of Direct Anterior Approach Versus Posterior Lateral Approach for Total Hip Replacement in Patients with Parkinson’s Disease
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Meng Yang, Mengxuan Yao, Kun Chu, Congcong Wei, Zihang Li, Jia Huo, Sikai Liu, and Huijie Li
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General Medicine - Published
- 2023
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35. Design and performance of the focal plane camera for FXT onboard the Einstein Probe satellite
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Weiwei Cui, Hao Wang, Xiaofan Zhao, Juan Zhang, Norbert Meidinger, Yanji Yang, Isabell Keil, Ziliang Zhang, Jia Huo, Juan Wang, Zeyu Song, Fangjun Lu, Jia Ma, Yusa Wang, Jingjing Xu, Yuxuan Zhu, Tianming Li, Wei Li, Laidan Luo, Dawei Han, Zijian Zhao, Dongjie Hou, Xiongtao Yang, Haoyang Geng, Shuo Li, HouLei Chen, QingJun Tang, Yehai Chen, and Yong Chen
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Space and Planetary Science ,Astronomy and Astrophysics - Published
- 2023
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36. In-orbit performance of LE onboard Insight-HXMT in the first 5 years
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Xiaobo Li, Yong Chen, Liming Song, Weiwei Cui, Wei Li, Juan Wang, Shuang-Nan Zhang, Fangjun Lu, Yupeng Xu, Haisheng Zhao, Mingyu Ge, Youli Tuo, Yusa Wang, Tianxiang Chen, Dawei Han, Jia Huo, Yanji Yang, Maoshun Li, Ziliang Zhang, Yuxuan Zhu, and Xiaofan Zhao
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Nuclear and High Energy Physics ,Nuclear Energy and Engineering ,FOS: Physical sciences ,Astrophysics - Instrumentation and Methods for Astrophysics ,Instrumentation and Methods for Astrophysics (astro-ph.IM) - Abstract
Purpose: The Low-Energy X-ray telescope (LE) is a main instrument of the Insight-HXMT mission and consists of 96 Swept Charge Devices (SCD) covering the 1-10 keV energy band. The energy gain and resolution are continuously calibrated by analysing Cassiopeia A (Cas A) and blank sky data, while the effective areas are also calibrated with the observations of the Crab Nebula. In this paper, we present the evolution of the in-orbit performances of LE in the first 5 years since launch. Methods: The Insight-HXMT Data Analysis Software package (HXMTDAS) is utilized to extract the spectra of Cas A, blank sky, and Crab Nebula using different Good Time Interval (GTI) selections. We fit a model with a power-law continuum and several Gaussian lines to different ranges of Cas A and blank sky spectra to get peak energies of their lines through xspec. After updating the energy gain calibration in CALibration DataBase (CALDB), we rerun the Cas A data to obtain the energy resolution. An empirical function is used to modify the simulated effective areas so that the background-subtracted spectrum of the Crab Nebula can best match the standard model of the Crab Nebula. Results: The energy gain, resolution, and effective areas are calibrated every month. The corresponding calibration results are duly updated in CALDB, which can be downloaded and used for the analysis of Insight-HXMT data. Simultaneous observations with NuSTAR and NICER can also be used to verify our derived results. Conclusion: LE is a well calibrated X-ray telescope working in 1-10 keV band. The uncertainty of LE gain is less than 20 eV in 2-9 keV band and the uncertainty of LE resolution is less than 15eV. The systematic errors of LE, compared to the model of the Crab Nebula, are lower than 1.5% in 1-10 keV., 20 pages, 10 figures, submitted
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- 2023
37. Design of the Performance Evaluation Library for Speech Recognition Systems Based on SystemC.
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Jin-wei Liu, Si-jia Huo, Zhangqin Huang, Yibin Hou, and Jin-jia Wang
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- 2009
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38. Microwave-assisted rapid synthesis and activation of ultrathin trimetal–organic framework nanosheets for efficient electrocatalytic oxygen evolution
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Jia Huo, Chenhui Li, Qiling Li, Chen Chen, Songyang Niu, Yanbo Liu, and Qingquan Liu
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Tafel equation ,Materials science ,Oxygen evolution ,Nanotechnology ,02 engineering and technology ,Overpotential ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,Electrocatalyst ,01 natural sciences ,Microwave assisted ,Exfoliation joint ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Electronic states ,Biomaterials ,Colloid and Surface Chemistry ,0210 nano-technology - Abstract
Ultrathin metal–organic frameworks (MOFs) nanosheets have been considered as one of promising electrocatalysts for oxygen evolution reaction due to their unique structures. However, the preparation process is subject to the low-yield exfoliation and time-consuming synthetic methods. And it still requires to be explored to develop an efficient strategy for regulation of surface electronic states of MOFs to enhance their electrocatalytic activities. Herein, we report a facile microwave-assisted synthesis of NiCoFe-based trimetallic metal-organic framework (MOF) nanosheets, which can achieve simultaneously rapid synthesis and activation of MOF for OER. The as-prepared Ni4Co4Fe2-MOF nanosheets exhibit excellent OER activity and electrochemical stability, which can deliver a current density of 10 mA cm−2 at a low overpotential of 243 mV with a small Tafel slope of 48.1 mV dec-1. This work provides a facile method for the rapid synthesis of MOF nanosheets and also demonstrates an effective approach for regulating the electronic structure of MOFs for electrocatalysis.
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- 2021
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39. The Levels of Wnt5a and Its Receptors Frizzled5 and Frizzled2 as Immunohistochemical Biomarkers of Severity of Psoriasis
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Ying Guo, Zhengxiao Li, Ying Huang, Yuan Wang, Yanfei Zhang, Xiaoying Ning, Dingwei Zhang, and Jia Huo
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medicine.medical_specialty ,psoriasis vulgaris ,business.industry ,PASI ,Frizzled5 ,Dermatology ,Disease ,Wnt5a ,Frizzled2 ,medicine.disease ,Gastroenterology ,Pathogenesis ,WNT5A ,Clinical, Cosmetic and Investigational Dermatology ,Disease severity ,Psoriasis Area and Severity Index ,Internal medicine ,Psoriasis ,medicine ,Immunohistochemistry ,Receptor ,business ,Original Research - Abstract
Xiaoying Ning, Dingwei Zhang, Yuan Wang, Jia Huo, Ying Huang, Ying Guo, Zhengxiao Li, Yanfei Zhang Department of Dermatology, The Second Affiliated Hospital of Xiâan Jiaotong University, Xian, Shaanxi Province, Peopleâs Republic of ChinaCorrespondence: Zhengxiao Li; Yanfei ZhangDepartment of Dermatology, The Second Affiliated Hospital of Xiâan Jiaotong University, 157 Xi Wu Road, Xian, Shaanxi Province, 710004, Peopleâs Republic of ChinaTel/Fax +86-29-87679301Email lizhengxiao1979@163.com; zhangyanfei723@163.comPurpose: Psoriasis is a systemic, chronic and inflammatory condition. The exact pathogenesis is unclear. The abnormal expression of Wnt5a pathway in psoriasis vulgaris has been confirmed. Whether it is related to the severity of psoriasis is unclear.Methods: Thirty-eight skin lesions from psoriasis vulgaris patients and 22 healthy adult skin tissues were taken. The semi-quantitative immunohistochemistry score of Wnt5a, Frizzled5 and Frizzled2 was evaluated under a microscope by two independent dermatologists. Psoriasis area and severity index (PASI) score system was used to evaluate the disease severity.Results: The average PASI score of the patients was 16.25 ± 7.8, and the average duration of disease was 19.6 ± 10.4 months. Wnt5a, Frizzled5 and Frizzled2 were highly expressed in psoriasis lesions. The semi-quantitative immunohistochemistry scores of Wnt5a, Frizzled5 and Frizzled2 were positively correlated with PASI scores (r = 0.71, r = 0.46, r = 0.65, respectively, all P-value < 0.01), but not correlated with duration of disease (r = 0.11, r = 0.17, r = 0.29, respectively, all P-value > 0.05). There were significant positive correlations between Wnt5a and Frizzled5 (r = 0.57, P-value < 0.01), as well as Wnt5a and Frizzled2 (r = 0.59, P-value < 0.01).Conclusion: Wnt5a and its receptors play an important role in pathogenesis of psoriasis vulgaris and are positively correlated with the severity of psoriasis, and may be one of the immunohistochemical predictors of the severity of the disease.Keywords: psoriasis vulgaris, Wnt5a, PASI, Frizzled5, Frizzled2
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- 2021
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40. Neuroprotective effect of a multi strain probiotic mixture in SOD1G93A mice Through reducing SOD1 aggregation and targeting the microbe-gut-brain axis
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Zikai Xin, Cheng Xin, Jia Huo, Qi Liu, Hui Dong, Rui Li, and Yaling Liu
- Abstract
Amyotrophic lateral sclerosis is a devastating neurodegenerative disease characterized by the formation of intracellular protein aggregations and the selective loss of motor neurons. Inflammatory response imbalance was considered to be a risk factor and disease-modifier and involved in the regulation of abnormal protein aggregation in ALS disease. The “microbiota-gut-brain axis” is a bidirectional communication system, which has been shown play some regulatory role in neuroinflammation and abnormal protein aggregation of neurodegenerative disorders. But whether probiotics can exert effects on ALS disease through “microbiota-gut-brain axis” is not clear. In our present study, we first report on superoxide dismutase 1-positive aggregates in intestinal myenteric neurons of SOD1G93A mice. This phenomenon was accompanied by structural disorder of myenteric neurons and enteric glial cells, impaired barrier function and overactivated pro-inflammatory response in intestine. This pathological change is different in colon and ileum, suggesting that it may be related to the difference of microbiota in their lumen. Oral administration of a multi-strain probiotic mixture containing Lactobacillus acidophilus, Bifidobacterium longum and Enterococcus faecalis not only improved the gut barrier function and pro-inflammatory response of spinal cord and intestine but also reduced aberrant SOD1 aggregation in myenteric neurons and spinal cord. This effect is accompanied by the alteration of gut microbiota composition and the increased level of short-chain fatty acids. Together, these findings might imply a potential benefit of microbiota-gut-brain axis axis-based therapy in ALS.
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- 2022
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41. Intensive online courses promote the development of myopia in children with orthokeratology lens during COVID-19 epidemic
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Wei Yang, Bo Liu, Li Chen, Yu-Fei Xu, Shu-Jia Huo, and Yong Liu
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Ophthalmology ,online lessons ,orthokeratology lens ,corona virus disease 2019 ,myopia ,axial length ,RE1-994 - Abstract
AIM: To study the effect of intensive online courses on myopia in primary and middle school students with orthokeratology-lens during Corona Virus Disease 2019(COVID-19)epidemic.METHODS:A total of 77 children in myopia with orthokeratology lens in outpatients from February to August 2020 were included in the study. Take a questionnaire to statistics times spending on online course, school class, playing digital electronic good, outdoor activity, homework, sleeping during the COVID-19 epidemic and school time, and analyze the differences of axial length(AL)variation between the COVID-19 epidemic and school time.RESULTS:For elementary school students, the time spending on online course and school class were 2.69±1.02h and 4.07±0.78h per day respectively(P
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- 2021
42. Co single atoms and CoO clusters over nitrogen–doped hollow carbon spheres for synergistic oxidation of aromatic alkanes
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Chengfeng Yi, Jia Huo, and Zhigang Liu
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General Chemical Engineering ,Environmental Chemistry ,General Chemistry ,Industrial and Manufacturing Engineering - Published
- 2023
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43. Accretion torque reversals in GRO J1008-57 revealed by Insight-HXMT
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Prahlad Epili, ShiJie Zheng, Yuan-Yuan Du, Peng Zhang, W. C. Jiang, Y. M. Tang, T. Luo, C. Z. Liu, S. Yang, Y. B. Chen, Xin Ren, Xufang Li, Gang Li, Cheng-Cheng Guo, Y. J. Yang, N. Sai, W. S. Wang, Wei Wang, Lei Sun, Zhe Chang, W. G. Li, X.W. Ma, L. D. Kong, Q. Luo, Bin Meng, Y. S. Wang, Jin-Yuan Liao, X. L. Cao, Da-Wei Han, Lian Tao, L. Wang, Tianran Chen, Y. G. Zheng, C. Cai, Xiong Li, Yu-Dong Gu, G. H. Gao, Mingyu Wu, Ming-Yu Ge, Y. Huang, B. Y. Wu, Weiguang Cui, Qingcui Bu, J. J. Yang, He-Yang Liu, L. Chen, Xiaohua Liang, Yuan You, X. Y. Song, R. C. Ma, Shuo Xiao, D. K. Zhou, Youli Tuo, Yi Zhang, He Gao, Jin-Lu Qu, Shaolin Xiong, Xuchao Zhao, Bing Li, Ju Guan, R. J. Yang, F. Zhang, B. B. Yi, H. M. Zhang, Jing Jin, X. F. Li, Wenda Zhang, Bobing Wu, Ti-Pei Li, Li-Ming Song, C. Wang, Junqiang Zhang, Bai-Sheng Liu, C. K. Li, Fangjun Lu, Shuang-Nan Zhang, G. C. Xiao, W. C. Zhang, Jundan Nie, Hongwei Liu, HongSheng Zhao, S. N. Zhang, Q. Q. Yin, Y. P. Chen, Y. Nang, P. J. Wang, Shu-Mei Jia, Ge Ou, Yin Xu, Jia Huo, X. Y. Wen, Z. W. Li, and Xin Lu
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Physics ,Accretion (meteorology) ,Magnetic moment ,010308 nuclear & particles physics ,Astrophysics::High Energy Astrophysical Phenomena ,Astronomy and Astrophysics ,Astrophysics ,Radius ,01 natural sciences ,Magnetic field ,Neutron star ,Dipole ,Pulsar ,Space and Planetary Science ,0103 physical sciences ,Astrophysics::Earth and Planetary Astrophysics ,010303 astronomy & astrophysics ,Line (formation) - Abstract
GRO J1008-57, as a Be/X-ray transient pulsar, is considered to have the highest magnetic field in known neutron star X-ray binary systems. Observational data of the X-ray outbursts in GRO J1008-57 from 2017 to 2020 were collected by the Insight-HXMT satellite. In this work, the spin period of the neutron star in GRO J1008-57 was determined to be about 93.28 seconds in August 2017, 93.22 seconds in February 2018, 93.25 seconds in June 2019 and 93.14 seconds in June 2020. GRO J1008-57 evolved in the spin-up process with a mean rate of − ( 2.10 ± 0.05 ) × 10−4 s/d from 2009 – 2018, and turned into a spin down process with a rate of ( 6.7 ± 0.6 ) × 10−5 s/d from Feb 2018 to June 2019. During the type II outburst of 2020, GRO J1008-57 had the spin-up torque again. During the torque reversals, the pulse profiles and continuum X-ray spectra did not change significantly, and the cyclotron resonant scattering feature around 80 keV was only detected during the outbursts in 2017 and 2020. Based on the observed mean spin-up rate, we estimated the inner accretion disk radius in GRO J1008-57 (about 1 - 2 times of the Alfven radius) by comparing different accretion torque models of magnetic neutron stars. During the spin-down process, the magnetic torque should dominate over the matter accreting inflow torque, and we constrained the surface dipole magnetic field B ≥ 6 × 10 12 G for the neutron star in GRO J1008-57, which is consistent with the magnetic field strength obtained by cyclotron line centroid energy.
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- 2021
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44. Physical origin of the non-physical spin evolution of MAXI J1820 + 070
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Cunguo Wang, Shaolin Xiong, B. S. Liu, B. B. Wu, H. Gao, J. Y. Liao, H. M. Zhang, R. C. Ma, Y. S. Wang, Y. F. Zhang, Xue-Feng Lu, C. Cai, Lian Tao, Shuinai Zhang, Tong Li, G. H. Gao, S. M. Jia, Tao Luo, M. Wu, X. Y. Song, Bo Li, Wenxiong Li, J. Jin, Xin-Fu Zhao, He-Yang Liu, S. Xiao, Lei Sun, Junqiang Zhang, J. L. Qu, Y. H. Tan, C. K. Li, Y. Nang, Peng Zhang, R. J. Yang, H. W. Liu, N. Sai, Yuan-Yuan Du, Y. G. Zheng, X. X. Li, Z. Chang, Y. B. Chen, Qiu-Yi Luo, Tian-Xiang Chen, Z. W. Li, F. J. Lu, Qingcui Bu, L. M. Song, S. J. Zheng, XiangYang Wen, X. H. Ma, Da-Wei Han, Ya Fang Huang, H. S. Zhao, Yuan You, Qi-Bin Yi, D. K. Zhou, P. J. Wang, W. S. Wang, Ge Ou, Yi Zhang, C. Z. Liu, Sisi Yang, J. Y. Nie, Xin Ren, Liang Zhang, Cheng-Cheng Guo, Ming-Yu Ge, L. Chen, Wan-Chang Zhang, Xiong Li, Yu-Dong Gu, X. J. Liu, Libin Wang, X. L. Cao, Q. Q. Yin, Y. P. Chen, Y. Wang, X. H. Liang, Fuqin Zhang, S. N. Zhang, Y. P. Xu, B. Y. Wu, Xuelong Li, J. Guan, L. D. Kong, Wei Cui, W. C. Zhang, Jia Huo, Gang Li, Wenhan Jiang, Bin Meng, Y. J. Yang, and G. C. Xiao
- Subjects
High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,Hardness ratio ,Astrophysics::High Energy Astrophysical Phenomena ,Spin transition ,FOS: Physical sciences ,Binary number ,Astronomy and Astrophysics ,Astrophysics ,Black hole ,Innermost stable circular orbit ,Accretion disc ,Space and Planetary Science ,Coincident ,Spectral analysis ,83C57 ,Astrophysics::Earth and Planetary Astrophysics ,Astrophysics - High Energy Astrophysical Phenomena ,Astrophysics::Galaxy Astrophysics - Abstract
We report on the Insight-HXMT observations of the new black hole X-ray binary MAXI J1820+070 during its 2018 outburst. Detailed spectral analysis via the continuum fitting method shows an evolution of the inferred spin during its high soft sate. Moreover, the hardness ratio, the non-thermal luminosity and the reflection fraction also undergo an evolution, exactly coincident to the period when the inferred spin transition takes place. The unphysical evolution of the spin is attributed to the evolution of the inner disc, which is caused by the collapse of a hot corona due to condensation mechanism or may be related to the deceleration of a jet-like corona. The studies of the inner disc radius and the relation between the disc luminosity and the inner disc radius suggest that, only at a particular epoch, did the inner edge of the disc reach the innermost stable circular orbit and the spin measurement is reliable. We then constrain the spin of MAXI J1820+070 to be a*=0.2^{+0.2}_{-0.3}. Such a slowly spinning black hole possessing a strong jet suggests that its jet activity is driven mainly by the accretion disc rather than by the black hole spin., Comment: 14 pages, 13 figures, 5 tables, accepted for publication in MNRAS
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- 2021
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45. The diagnostic value of blood sample NGS in patients with early periprosthetic joint infection after total hip arthroplasty
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Bingshi Zhang, Mengnan Li, Yawei Liu, Binquan Zhang, Zeming Liu, Xiao Chen, Jia Huo, and Yongtai Han
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Surgery ,Dermatology - Abstract
The diagnostic value of next-generation sequencing (NGS) of blood samples from patients with periprosthetic joint infection (PJI) after total hip arthroplasty (THA) was evaluated by comparing it with drainage fluid NGS and bacterial culture. The study was designed as a retrospective diagnostic test. Thirty-six infected patients were diagnosed with PJI according to the Musculoskeletal Infection Society (MSIS) criteria and 57 volunteers were included in our study. NGS and bacterial culture were chosen to detect PJI after THA. Blood samples and drainage fluid were collected for NGS, and the drainage fluid, which was collected at the same time as the NGS drainage fluid sample, was used for bacterial culture. The primary outcomes of interest were sensitivity, specificity, and accuracy. In the infection group, 31 patients showed positive results by blood sample NGS, 33 patients showed positive results by drainage fluid NGS, and 17 patients showed positive bacterial culture results. In the control group, the results of 2 blood sample NGS, 16 drainage fluid NGS, and 3 bacterial cultures were positive. The sensitivity, specificity, and accuracy of the blood sample were 0.86, 0.96, and 0.92, respectively. The sensitivity, specificity, and accuracy of the drainage fluid samples were 0.92, 0.72, and 0.80, respectively. The sensitivity, specificity, and accuracy of bacterial culture were 0.47, 0.95, and 0.79, respectively. The study demonstrated that both the sensitivity and specificity of NGS were higher than those of bacterial culture, regardless of the kind of sample. Compared with drainage fluid NGS, the sensitivity of blood sample NGS was slightly lower (0.86 vs 0.92), but blood sample NGS showed higher specificity (0.96 vs 0.72). In total, the diagnostic value of blood sample NGS was superior to that of drainage fluid NGS and bacterial culture. The majority of infected patients could be identified by blood sample NGS. Moreover, because of its high specificity, blood sample NGS can not only detect infectious bacteria but also distinguish infectious from non-infectious bacteria, which is dramatically different from using drainage fluid NGS.
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- 2022
46. Dynamic change of soluble interleukin-2 receptor distinguished molecular heterogeneity and microenvironment alterations in diffuse large B-cell lymphoma
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Yu-Jia, Huo, Peng-Peng, Xu, Li, Wang, Hui-Juan, Zhong, Di, Fu, Qing, Shi, Shu, Cheng, Shuo, Wang, Mu-Chen, Zhang, and Wei-Li, Zhao
- Subjects
Biochemistry (medical) ,Clinical Biochemistry ,Molecular Medicine - Abstract
Diffuse large B-cell lymphoma (DLBCL) is an aggressive lymphoma with variable clinical outcomes and prediction of prognosis remains important for long-term remission. We performed serial serum soluble interleukin-2 receptor (sIL-2R) measurement pretreatment and before each cycle of the treatment in 599 patients with de novo DLBCL. Genomic and transcriptomic features were analyzed by 223 DNA- and 227 RNA-sequencing, respectively. Applying the cut-off value to sIL-2R pretreatment and cycle 2 (C2) level, patients were classified into FINE subtype (pretreatment low level) with good prognosis, RES subtype (pretreatment high level and C2 low level) with intermediate prognosis, and RET subtype (pretreatment high level and C2 high level) with poor prognosis, independent of International Prognostic Index. In “others” genetic subtype, dynamic change of sIL-2R showed prognostic significance and genetic features. Compared with FINE subtype, RES subtype had increased ARID1A and MYD88 mutations, and RET subtype had increased KMT2D, LYN and SOCS1 mutations. RES and RET subtypes showed significant enrichment in oncogenic pathways, such as ERK, NF-κB, JAK-STAT, and immune-associated pathways. As for tumor microenvironment, RES subtype exhibited increased recruiting activity of CD8 + T, T helper 1, and natural killer cells, and RET subtype with increased recruiting activity of CD4 + T and regulatory T cells in silico. There was a positive correlation between transcripts of IL-2R and immune checkpoint expressions including PD-1 and CTLA-4. Our findings identified that dynamic change of sIL-2R, with this simple and easy detection method in peripheral blood, had long-term prognostic effect and specific relation to microenvironment alterations in DLBCL.
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- 2022
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47. HXMT identification of a non-thermal X-ray burst from SGR J1935+2154 and with FRB 200428
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Y. J. Jin, Z. Chang, J. Y. Liao, H. M. Zhang, Y. F. Zhang, X. B. Li, Y. G. Li, Chun-sheng Zhang, Wenhan Jiang, Bo Li, Yu-Xuan Zhu, G. H. Gao, J. Jin, M. Wu, Y. Zhang, Xin-Fu Zhao, Zhi Zhang, Y. H. Tan, Y. X. Zhu, R. C. Shang, C. Cai, B. Lu, Fuqin Zhang, J. K. Deng, S. N. Zhang, W. C. Xue, X. X. Li, Y. G. Zheng, J. F. Zhou, Ming-Yu Ge, X. H. Ma, Wenxiong Li, Tian-Xiang Chen, F. J. Lu, Y. S. Wang, D. K. Zhou, Wei Cui, T. Zhang, Aimei Zhang, Lin Lin, Li-Ming Song, B. S. Liu, Lei Sun, C. Z. Liu, S. J. Zheng, Luhua Jiang, Y. P. Xu, B. B. Wu, X. L. Cao, Tao Luo, XiangYang Wen, Xue-Feng Lu, Bin Meng, S. Xiao, Y. B. Chen, Junqiang Zhang, Tong Li, H. W. Liu, N. Sai, Mao-Shun Li, Yunchao Liu, Sisi Yang, Y. J. Yang, S. M. Jia, Yuan You, L. D. Kong, Songbo Zhang, Cunguo Wang, Qi-Bin Yi, Yu-Dong Gu, Q. Q. Yin, Y. P. Chen, Xuelong Li, J. Guan, X. J. Liu, W. Z. Zhang, Yuan-Yuan Du, Gang Chen, X. H. Liang, G. C. Xiao, R. L. Zhuang, GuoQing Liu, Jia Huo, Y. Nang, Gang Li, Shaolin Xiong, Y. J. Zhang, H. Gao, Qiu-Yi Luo, Z. Zhang, Y. L. Tuo, J. W. Yang, Bing Zhang, B. Y. Wu, Lian Tao, X. Y. Song, H. S. Zhao, G. F. Wang, W. S. Wang, Ge Ou, W. C. Zhang, J. Y. Nie, Yi-Qiao Dong, Cheng-Cheng Guo, C. K. Li, H. Xu, Z. W. Li, Da-Wei Han, Z. L. Zhang, M. X. Fu, Yue Zhang, Ya Fang Huang, J. Z. Wang, L. Chen, Wan-Chang Zhang, Weiguang Cui, Qingcui Bu, Min Gao, and J. L. Qu
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High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,010504 meteorology & atmospheric sciences ,X-ray ,FOS: Physical sciences ,Astronomy and Astrophysics ,Astrophysics ,Magnetar ,01 natural sciences ,Coincidence ,Radio spectrum ,0103 physical sciences ,Thermal ,Astrophysics - High Energy Astrophysical Phenomena ,Astrophysics - Instrumentation and Methods for Astrophysics ,Instrumentation and Methods for Astrophysics (astro-ph.IM) ,010303 astronomy & astrophysics ,Event (particle physics) ,0105 earth and related environmental sciences ,Delay time - Abstract
Fast radio bursts (FRBs) are short pulses observed in radio band from cosmological distances. One class of models invoke soft gamma-ray repeaters (SGRs), or magnetars, as the sources of FRBs. Some radio pulses have been observed from some magnetars, however, no FRB-like events had been detected in association any magnetar burst, including one giant flare. Recently, a pair of FRB-like bursts (FRB 200428 hereafter) separated by milliseconds (ms) were detected from the general direction of the Galactic magnetar SGR J1935+2154. Here we report the detection of a non-thermal X-ray burst in the 1-250 keV energy band with the Insight-HXMT satellite, which we identify as emitted from SGR J1935+2154. The burst showed two hard peaks with a separation of 34 ms, broadly consistent with that of the two bursts in FRB 200428. The delay time between the double radio and X-ray peaks is about 8.57 s, fully consistent with the dispersion delay of FRB 200428. We thus identify the non-thermal X-ray burst is associated with FRB 200428 whose high energy counterpart is the two hard peaks in X-ray. Our results suggest that the non-thermal X-ray burst and FRB 200428 share the same physical origin in an explosive event from SGR J1935+2154., 24 pages, 9 figures, 6 tables; initial submission to a journal on May 9th, 2020. Significant changes include updated localization and detailed spectral evolution of the X-ray burst, and better determination of the two narrow X-ray peaks corresponding to the two radio pulses. Conclusions are strengthened. Nature Astronomy online on Feb. 18, 2021
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- 2021
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48. Insight-HXMT observations of jet-like corona in a black hole X-ray binary MAXI J1820+070
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Xiaobo Li, Zhu Liu, Y. L. Tuo, J. W. Yang, Shuang-Nan Zhang, Aimei Zhang, Yong Chen, Wei Wang, Li Chen, Mao-Shun Li, Hai-Sheng Zhao, C. K. Li, Cheng-Kui Li, Weimin Yuan, Yanji Yang, Juan Wang, Yu-Xuan Zhu, Ju Guan, Xiao-Fan Zhao, Bozena Czerny, Ling-Jun Wang, Qingwen Wu, Xufang Li, Gang Li, R. C. Shang, B. B. Wu, Shaolin Xiong, Yifei Zhang, Tong Zhang, X. Y. Song, Yongjie Zhang, N. Sai, Erlin Qiao, Yi Zhang, Ti-Pei Li, Lian Tao, Wei-Wei Cui, Wan-Chang Zhang, Bin Meng, Yue Zhu, Y. Nang, Liang Sun, Yu-Peng Chen, Ming-Yu Ge, Xiao-Jing Liu, Wei Cui, Zi-Gao Dai, Bobing Wu, Shu Zhang, Gang Chen, Bing Li, Yuan-Yuan Du, Zhi Chang, G. F. Wang, Xiang Ma, Ying Tan, L. D. Kong, T. Luo, Fangjun Lu, Guan-Hua Gao, Shuo Xiao, Juan Zhang, D. K. Zhou, Shu-Mei Jia, Y. P. Chen, Chichuan Jin, Bifang Liu, Wei Li, Jian-Feng Zhou, Ge Ou, Yupeng Xu, Bo Lu, Bei You, He Gao, Chen Wang, Fan Zhang, Yanguo Li, Chong Luo, Qi Luo, Jing Jin, Jing-Kang Deng, Li-Ming Song, Cheng-Cheng Guo, XiangYang Wen, Xiaohua Liang, C. X. Liu, C. Cai, Yue Huang, Yuan You, Jia Huo, Zi-Liang Zhang, J. C. Liu, Zhao Zhang, Yongwei Dong, Qi-Bin Yi, Mei Wu, W. C. Jiang, Jin-Yuan Liao, X. L. Cao, Xue-Feng Lu, Guang-Cheng Xiao, Wei Zhang, Chengmo Zhang, Yu-Dong Gu, Hong-Mei Zhang, Tian-Xiang Chen, GuoQing Liu, Y. N. Liu, Qian-Qing Yin, Zheng-Wei Li, Xian Li, Hongwei Liu, Sheng Yang, Wenshuai Wang, Luhua Jiang, Jin-Lu Qu, Jianyin Nie, Min-Xue Fu, Yu-Sa Wang, YongJie Jin, Yue Zhang, Qingcui Bu, Wen-Zhao Zhang, Da-Wei Han, M. Gao, and Shi-Jie Zheng
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Astrophysics::High Energy Astrophysical Phenomena ,Science ,Phase (waves) ,X-ray binary ,FOS: Physical sciences ,General Physics and Astronomy ,Astrophysics ,Radiation ,01 natural sciences ,Article ,General Biochemistry, Genetics and Molecular Biology ,0103 physical sciences ,Astrophysics::Solar and Stellar Astrophysics ,010303 astronomy & astrophysics ,High Energy Astrophysical Phenomena (astro-ph.HE) ,Physics ,Jet (fluid) ,Multidisciplinary ,Shock (fluid dynamics) ,010308 nuclear & particles physics ,General Chemistry ,Corona ,Astrophysics - Astrophysics of Galaxies ,High-energy astrophysics ,Black hole ,Astrophysics of Galaxies (astro-ph.GA) ,Physics::Space Physics ,Reflection (physics) ,Compact astrophysical objects ,Astrophysics - High Energy Astrophysical Phenomena - Abstract
A black hole X-ray binary produces hard X-ray radiation from its corona and disk when the accreting matter heats up. During an outburst, the disk and corona co-evolves with each other. However, such an evolution is still unclear in both its geometry and dynamics. Here we report the unusual decrease of the reflection fraction in MAXI J1820+070, which is the ratio of the coronal intensity illuminating the disk to the coronal intensity reaching the observer, as the corona is observed to contrast during the decay phase. We postulate a jet-like corona model, in which the corona can be understood as a standing shock where the material flowing through. In this dynamical scenario, the decrease of the reflection fraction is a signature of the corona's bulk velocity. Our findings suggest that as the corona is observed to get closer to the black hole, the coronal material might be outflowing faster., 11 pages, 5 figures; published in Nature Communications; An artist's impression of Figure 5 is updated here, and the animation is available at http://youbei.work/research/
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- 2021
49. Microwave-assisted acid-induced formation of linker vacancies within Zr-based metal organic frameworks with enhanced heterogeneous catalysis
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Yu Liang, Mohammed Loubidi, Yanbo Liu, Yangyang Zhou, Lanjun Chen, Jia Huo, and Chenhui Li
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Materials science ,fungi ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Heterogeneous catalysis ,01 natural sciences ,Microwave assisted ,0104 chemical sciences ,Catalysis ,Chemical engineering ,Specific surface area ,Microwave irradiation ,Metal-organic framework ,Thermal stability ,0210 nano-technology ,Linker - Abstract
Herein, we report a microwave-assisted acid-induced post-treatment method for the formation of linker vacancies within Zr-based metal organic frameworks (Zr-MOFs). The number of linker vacancies can be easily regulated with this method by changing the concentration of the HCl solution and the duration of microwave irradiation. The optimized defective UiO-66 showed higher linker defects with a higher specific surface area and thermal stability. The results of the catalytic cyclization of citronella showed that the Zr-MOFs with more defects exhibited enhanced catalytic performance. This work may provide a new method for the creation of defective MOFs with high activity and stability.
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- 2021
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50. The LncRNA MIR155HG is Upregulated by SP1 in Melanoma Cells and Drives Melanoma Progression via Modulating the MiR-485-3p/PSIP1 Axis
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Wei Wang, Jia Huo, Cui Lu, Peiwen Yang, Yanfei Zhang, Yuan Wang, Wenwei Zhao, Miaomiao Zhang, and Dingwei Zhang
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Pharmacology ,Untranslated region ,Cancer Research ,Sp1 transcription factor ,Cell growth ,Melanoma ,RNA ,Biology ,medicine.disease ,PSIP1 ,Downregulation and upregulation ,microRNA ,Cancer research ,medicine ,Molecular Medicine - Abstract
Background: MIR155HG is a long non-coding RNA (lncRNA) that has been shown to be dysregulated in a range of tumor types, but the functions of this lncRNA in melanoma remain to be explored. Objectives: We explored the functions of lncRNA MIR155HG in melanoma progression. Methods: The expression of miR155HG was analyzed in clinical melanoma. Bioinformatics analysis was performed to assess the potential tumor-related functions of miR155HG. The interaction of miR155HG and SP1 and the inhibition of PSIP1 by miR-485-3p were analyzed by ChIP, luciferase reporter experiments, and the biological effects in melanoma were explored by colony formation assays, EdU cell proliferation assays, Transwell analysis, and intracranial melanoma mouse model. Results: Herein, we found that MIR155HG was markedly upregulated in melanoma cell lines and tissues. We further determined that the SP1 transcription factor was responsible for driving MIR155HG upregulation in melanoma. Elevated MIR155HG levels were linked to decreased overall survival (OS) in melanoma patients, and we further determined that MIR155HG expression was an independent predictor of melanoma patient prognosis. When MIR155HG was knocked down in melanoma cells, this impaired their proliferative, migratory, and invasive activity. By using predictive bioinformatics analyses, we identified miR-485-3p as a microRNA (miRNA) capable of binding to both MIR155HG and the 3’ UTR of PSIP1. Conclusion: Together, these results suggest that MIR155HG is capable of promoting melanoma cell proliferation via the miR-485-3p/PSIP1 axis. These novel findings provide new insights into the development of melanoma, potentially highlighting future avenues for therapeutic intervention.
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- 2021
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