165 results on '"Li Shen"'
Search Results
2. Tyrosine phosphorylation of band 3 impairs the storage quality of suspended red blood cells in the Tibetan high-altitude polycythemia population
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Wu, Xiaodong, Liu, Zhijuan, Hao, Doudou, Zhao, Qin, Li, Wanjing, Xie, Maodi, Feng, Xia, Liao, Xia, Chen, Siyuan, Wang, Siyu, Zhou, Chaohua, Long, Wenchun, Zhong, Yajun, Li, Shen, Cao, Ye, Wang, Hong, Wang, Aiping, Xu, Yuehong, Huang, Min, Liu, Jiaxin, Zhong, Rui, Wu, Yunhong, and He, Zeng
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- 2023
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3. Cell-therapy for Parkinson’s disease: a systematic review and meta-analysis
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Wang, Fang, Sun, Zhengwu, Peng, Daoyong, Gianchandani, Shikha, Le, Weidong, Boltze, Johannes, and Li, Shen
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- 2023
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4. Targeting lymph node delivery with nanovaccines for cancer immunotherapy: recent advances and future directions
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Li, Yueyi, Li, Shen, Jiang, Zedong, Tan, Keqin, Meng, Yuanling, Zhang, Dingyi, and Ma, Xuelei
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- 2023
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5. Interrater agreement between children’s self-reported and their mothers’ proxy-reported dental anxiety: a Chinese cross-sectional study
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Fu, Su-Wei, Li, Shen, Shi, Zhi-Yan, and He, Qing-Li
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- 2023
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6. Ferroptosis is a protective factor for the prognosis of cancer patients: a systematic review and meta-analysis
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Li, Shen, Tao, Kai, Yun, Hong, Yang, Jiaqing, Meng, Yuanling, Zhang, Fan, and Ma, Xuelei
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- 2024
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7. Targeted metabolomics-based understanding of the sleep disturbances in drug-naïve patients with schizophrenia
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Yan, Huiming, Li, Gang, Zhang, Xue, Zhang, Chuhao, Li, Meijuan, Qiu, Yuying, Sun, Wei, Dong, Yeqing, Li, Shen, and Li, Jie
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- 2024
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8. Histone deacetylase inhibitors VPA and WT161 ameliorate the pathological features and cognitive impairments of the APP/PS1 Alzheimer’s disease mouse model by regulating the expression of APP secretases
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Zhang, Miaomiao, Wang, Wanyao, Ye, Qun, Fu, Yun, Li, Xuemin, Yang, Ke, Gao, Fan, Zhou, An, Wei, Yonghui, Tian, Shuang, Li, Shen, Wei, Fengjiang, Shi, Wentao, and Li, Wei-Dong
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- 2024
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9. Localized delivery of brain-derived neurotrophic factor from PLGA microspheres promotes peripheral nerve regeneration in rats
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Shi, Zheng-liang, Fan, Zhi-yong, Zhang, Hua, Li, Shen-tai, Yuan, He, and Tong, Jiu-hui
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- 2022
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10. The prevalence and clinical correlates of medical disorders comorbidities in patients with bipolar disorder
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Wang, Zhonggang, Li, Tao, Li, Shuhua, Li, Kunkun, Jiang, Xianfei, Wei, Chen, Yang, Lei, Cao, Haiyan, Li, Shen, and Li, Jie
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- 2022
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11. Correction to: The prevalence and clinical correlates of medical disorders comorbidities in patients with bipolar disorder
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Wang, Zhonggang, Li, Tao, Li, Shuhua, Li, Kunkun, Jiang, Xianfei, Wei, Chen, Yang, Lei, Cao, Haiyan, Li, Shen, and Li, Jie
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- 2022
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12. The prevalence and correlates of peripartum depression in different stages of pregnancy during COVID-19 pandemic in China
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Hu, Manji, Zhou, Yongjie, Xue, Mei, Ren, Yali, Li, Shen, Wang, Ruoxi, Qi, Ling, Zeng, Lingyun, Liu, Zhengkui, Qian, Wei, Yang, Jiezhi, Zhou, Xin, Chen, Lijuan, and Zhang, Xiangyang
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- 2022
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13. Prognostic nutritional index predicts clinical outcomes in patients with cerebral venous sinus thrombosis
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Zhao, Jiawei, Liu, Kai, Li, Shen, Gao, Yuan, Zhao, Lu, Liu, Hongbing, Fang, Hui, Wu, Jun, Sun, Shilei, Li, Yusheng, Song, Bo, and Xu, Yuming
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- 2021
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14. Suppression of TCAB1 expression induced cellular senescence by lessening proteasomal degradation of p21 in cancer cells
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Niu, Jing, Gao, Rui-Qi, Cui, Meng-Tian, Zhang, Chen-Guang, Li, Shen-Tao, Cheng, Shan, and Ding, Wei
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- 2021
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15. Octyl-2-cyanoacrylate tissue adhesive without subcuticular suture for wound closure after total hip arthroplasty: a prospective observational study on thirty-two cases with controls for 3 months follow-up
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Wang, Li-Shen, Wang, Xin-Yu, Tu, Hao-tian, Huang, Yi-Fan, Qi, Xin, and Gao, Yu-Hang
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- 2020
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16. LncRNA TTN-AS1 promotes the progression of oral squamous cell carcinoma via miR-411-3p/NFAT5 axis
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Fu, Su-Wei, Zhang, Yan, Li, Shen, Shi, Zhi-Yan, Zhao, Juan, and He, Qing-Li
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- 2020
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17. Epidemiologic relationship between periodontitis and type 2 diabetes mellitus
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Wu, Chen-zhou, Yuan, Yi-hang, Liu, Hang-hang, Li, Shen-sui, Zhang, Bo-wen, Chen, Wen, An, Zi-jian, Chen, Si-yu, Wu, Yong-zhi, Han, Bo, Li, Chun-jie, and Li, Long-jiang
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- 2020
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18. Genome-wide analysis of Jatropha curcas MADS-box gene family and functional characterization of the JcMADS40 gene in transgenic rice
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Tang, Yuehui, Wang, Jian, Bao, Xinxin, Wu, Qian, Yang, Tongwen, Li, Han, Wang, Wenxia, Zhang, Yizhen, Bai, Nannan, Guan, Yaxin, Dai, Jiaxi, Xie, Yanjie, Li, Shen, Huo, Rui, and Cheng, Wei
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- 2020
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19. Efficacy of bevacizumab combined with chemotherapy in the treatment of HER2-negative metastatic breast cancer: a network meta-analysis
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Sun, Zhengwu, Lan, Xiaoyan, Xu, Shizhao, Li, Shen, and Xi, Yalin
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- 2020
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20. The prevalence and correlates of burnout among Chinese preschool teachers
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Li, Shen, Li, Yibo, Lv, Hao, Jiang, Rui, Zhao, Peng, Zheng, Xin, Wang, Lili, Li, Jie, and Mao, Fuqiang
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- 2020
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21. Treatment effects of Chinese medicine (Yi-Qi-Qing-Jie herbal compound) combined with immunosuppression therapies in IgA nephropathy patients with high-risk of end-stage renal disease (TCM-WINE): study protocol for a randomized controlled trial
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Li, Shen and Li, Jin-pu
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- 2020
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22. Effect of a rescue or recurrence dose of lasmiditan on efficacy and safety in the acute treatment of migraine: findings from the phase 3 trials (SAMURAI and SPARTAN)
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Loo, Li Shen, Plato, Brian M., Turner, Ira M., Case, Michael G., Raskin, Joel, Dowsett, Sherie A., and Krege, John H.
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- 2019
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23. The analysis of risk factors for diabetic nephropathy progression and the construction of a prognostic database for chronic kidney diseases
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Wang, Gang, Ouyang, Jian, Li, Shen, Wang, Hui, Lian, Baofeng, Liu, Zhihong, and Xie, Lu
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- 2019
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24. A novel mechanism for C1GALT1 in the regulation of gastric cancer progression
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Zhiguo Luo, Li Shen, Xinzhou Deng, Yongyu Liu, Xiaoxia Dong, Qiwen Duan, Chunli Chen, and Zhen Peng
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QH301-705.5 ,Integrin ,QD415-436 ,Biochemistry ,General Biochemistry, Genetics and Molecular Biology ,Metastasis ,Downregulation and upregulation ,medicine ,Biology (General) ,PI3K/AKT/mTOR pathway ,C1GALT1 ,Sp1 transcription factor ,biology ,Cell growth ,Chemistry ,Research ,Cancer ,Promoter ,medicine.disease ,Malignant progression ,Cancer research ,biology.protein ,Gastric cancer ,TP248.13-248.65 ,Glycosyltransferase ,Biotechnology - Abstract
Background Gastric cancer (GC) is a highly aggressive and lethal disease around the world. High expression of core 1 β 1, 3-galactosyltransferase 1 (C1GALT1), the primary enzyme responsible for protein O-glycosylation, plays a critical role in gastric carcinogenesis. However, proteins that can be O-glycosylated by C1GALT1 in GC have not been completely elucidated. Also, the mechanism leading to its upregulation in GC is currently unknown. Results Using public databases and our patient samples, we confirmed that C1GALT1 expression was upregulated at both the mRNA and protein levels in GC tissues. Elevated expression of C1GALT1 protein was closely associated with advanced TNM stage, lymph node metastasis, tumor recurrence, and poor overall survival. With gain- and loss-of-function approaches, we demonstrated that C1GALT1 promoted GC cell proliferation, migration, and invasion. By employing lectin pull-down assay and mass spectrometry, integrin α5 was identified as a new downstream target of C1GALT1 in GC. C1GALT1 was able to modify O-linked glycosylation on integrin α5 and thereby modulate the activation of the PI3K/AKT pathway. Functional experiments indicated that integrin α5 inhibition could reverse C1GALT1-mediated tumor growth and metastasis both in vitro and in vivo. Moreover, transcription factor SP1 was found to bind to the C1GALT1 promoter region and activated its expression. Further investigation proved that miR-152 negatively regulated C1GALT1 expression by directly binding to its 3′ -UTR. Conclusions Our findings uncover a novel mechanism for C1GALT1 in the regulation of GC progression. Thus, C1GALT1 may serve as a promising target for the diagnosis and treatment of GC.
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- 2021
25. Ideas for how informaticians can get involved with COVID-19 research
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Graciela Gonzalez-Hernandez, Ryan J. Urbanowicz, Marylyn D. Ritchie, Li Shen, Danielle L. Mowery, Dokyoon Kim, Jason H. Moore, Jeffrey S. Morris, Rebecca A. Hubbard, Blanca E. Himes, Daniel S. Herman, George Demiris, Mary Regina Boland, Ian Barnett, John H. Holmes, and Yong Chen
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Engineering ,2019-20 coronavirus outbreak ,020205 medical informatics ,Coronavirus disease 2019 (COVID-19) ,Research areas ,lcsh:Analysis ,02 engineering and technology ,Population health ,lcsh:Computer applications to medicine. Medical informatics ,Biochemistry ,Health informatics ,03 medical and health sciences ,0302 clinical medicine ,Health care ,0202 electrical engineering, electronic engineering, information engineering ,Genetics ,030212 general & internal medicine ,Molecular Biology ,business.industry ,lcsh:QA299.6-433 ,Computer Science Applications ,Computational Mathematics ,Editorial ,Computational Theory and Mathematics ,Work (electrical) ,Informatics ,lcsh:R858-859.7 ,Engineering ethics ,business - Abstract
The coronavirus disease 2019 (COVID-19) pandemic has had a significant impact on population health and wellbeing. Biomedical informatics is central to COVID-19 research efforts and for the delivery of healthcare for COVID-19 patients. Critical to this effort is the participation of informaticians who typically work on other basic science or clinical problems. The goal of this editorial is to highlight some examples of COVID-19 research areas that could benefit from informatics expertise. Each research idea summarizes the COVID-19 application area, followed by an informatics methodology, approach, or technology that could make a contribution. It is our hope that this piece will motivate and make it easy for some informaticians to adopt COVID-19 research projects.
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- 2020
26. ReferencesEfficiency and safety of renal denervation via cryoablation (Cryo-RDN) in Chinese patients with uncontrolled hypertension: study protocol for a randomized controlled trial
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Meng Ji, Li Shen, Xu Yawei, Junbo Ge, Han Chen, Yi Zhang, and Ling-Juan Qiao
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Adult ,Cryoablation ,medicine.medical_specialty ,medicine.medical_treatment ,Population ,Medicine (miscellaneous) ,Kidney ,Cryosurgery ,law.invention ,Young Adult ,Study Protocol ,Randomized controlled trial ,law ,Internal medicine ,Outcome Assessment, Health Care ,medicine ,Clinical endpoint ,Humans ,Single-Blind Method ,Pharmacology (medical) ,Prospective Studies ,education ,Adverse effect ,Aged ,Randomized Controlled Trials as Topic ,lcsh:R5-920 ,education.field_of_study ,business.industry ,Balloon catheter ,Correction ,Middle Aged ,Denervation ,Catheter ,Blood pressure ,Hypertension ,Renal denervation ,lcsh:Medicine (General) ,business - Abstract
Background Clinical data show that due to the limited effects of lifestyle regulation and unsatisfactory drug adherence, only half of the hypertensive population have their blood pressure (BP) under control. In recent years, catheter-based renal denervation (RDN) has been used as a novel approach for treating uncontrolled hypertension. The safety and efficacy of catheter-based RDN have been confirmed by a number of studies and trials in which the participants were all non-Chinese and RDN was conducted via radiofrequency or ultrasound. Methods/design This study is a prospective multicenter randomized sham-controlled trial that aims to investigate the safety and efficacy of cryoablation RDN (cryo-RDN) using a novel dedicated cryoablation balloon catheter (Cryofocus, China). A total of 200 Chinese patients who have uncontrolled hypertension despite standard medical treatment will be enrolled. With drug standardization, eligible participants will be randomized in a 1:1 ratio to undergo cryo-RDN treatment or renal angiography alone as a sham treatment. The primary endpoint is defined as the change in 24-h ambulatory systolic blood pressure from baseline to 6 months. Office BP and other 24-h ambulatory BP are included as secondary endpoints. Safety endpoints primarily include any adverse effects. Discussion This study was designed to verify the safety and efficacy of cryo-RDN with Cryofocus balloon catheters in uncontrolled hypertensive patients on polypharmacy. The aim is to provide a new way to improve the control of hypertension in China as a complement to drug therapy. Trial registration ChiCTR, ChiCTR1800017707. Registered on 10 August 2018.
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- 2019
27. Association analysis of rare variants near the APOE region with CSF and neuroimaging biomarkers of Alzheimer’s disease
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Shannon L. Risacher, Emrin Horgusluoglu, Clifford R. Jack, Seunggeun Lee, Tatiana Foroud, Paul S. Aisen, John Q. Trojanowski, Ronald C. Petersen, Sungeun Kim, Michael Weiner, Li Shen, Kwangsik Nho, Arthur W. Toga, Leslie M. Shaw, Andrew J. Saykin, Robert C. Green, and Dokyoon Kim
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0301 basic medicine ,Apolipoprotein E ,Male ,Aging ,Neurodegenerative ,Medical Biochemistry and Metabolomics ,Alzheimer's Disease ,0302 clinical medicine ,Missing heritability problem ,Genotype ,ADNI ,2.1 Biological and endogenous factors ,Aetiology ,Genetics (clinical) ,Genetics ,Genetics & Heredity ,screening and diagnosis ,Single Nucleotide ,Detection ,Frontal lobe ,Neurological ,Biomedical Imaging ,Female ,Human ,lcsh:Internal medicine ,lcsh:QH426-470 ,Oncology and Carcinogenesis ,CSF ,Neuroimaging ,Biology ,Polymorphism, Single Nucleotide ,Chromosomes ,03 medical and health sciences ,Apolipoproteins E ,Clinical Research ,Alzheimer Disease ,Acquired Cognitive Impairment ,Humans ,Allele ,Polymorphism ,lcsh:RC31-1245 ,Genetic association ,Amyloid beta-Peptides ,Pair 19 ,Whole Genome Sequencing ,Prevention ,Research ,Human Genome ,Neurosciences ,Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD) ,Rare variants ,Alzheimer’s Disease Neuroimaging Initiative ,Peptide Fragments ,Brain Disorders ,4.1 Discovery and preclinical testing of markers and technologies ,Minor allele frequency ,lcsh:Genetics ,030104 developmental biology ,Dementia ,CBLC ,Chromosomes, Human, Pair 19 ,030217 neurology & neurosurgery ,Near APOE - Abstract
Background The APOE ε4 allele is the most significant common genetic risk factor for late-onset Alzheimer’s disease (LOAD). The region surrounding APOE on chromosome 19 has also shown consistent association with LOAD. However, no common variants in the region remain significant after adjusting for APOE genotype. We report a rare variant association analysis of genes in the vicinity of APOE with cerebrospinal fluid (CSF) and neuroimaging biomarkers of LOAD. Methods Whole genome sequencing (WGS) was performed on 817 blood DNA samples from the Alzheimer’s Disease Neuroimaging Initiative (ADNI). Sequence data from 757 non-Hispanic Caucasian participants was used in the present analysis. We extracted all rare variants (MAF (minor allele frequency)
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- 2017
28. HDAC 1 and 6 modulate cell invasion and migration in clear cell renal cell carcinoma
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Sreenivasulu Chintala, Ashley Orillion, Swathi Ramakrishnan, Wendy M. Swetzig, Roberto Pili, Gokul M. Das, Sheng-Yu Ku, Ray Huang, Kiersten Marie Miles, Leigh Ellis, Kris Attwood, Dylan Conroy, Paula Sotomayor, Eric Ciamporcero, and Li Shen
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0301 basic medicine ,Cancer Research ,PROTEIN ,Fluorescent Antibody Technique ,Histone Deacetylase 1 ,Kaplan-Meier Estimate ,Histone Deacetylase 6 ,ANGIOGENESIS ,TRANSCRIPTIONAL ACTIVITY ,0302 clinical medicine ,Cell Movement ,Transcriptional regulation ,BREAST-CANCER CELLS ,Flow Cytometry ,HISTONE DEACETYLASE INHIBITORS ,Immunohistochemistry ,Kidney Neoplasms ,3. Good health ,Oncology ,030220 oncology & carcinogenesis ,Gene Knockdown Techniques ,ESTROGEN-RECEPTOR-ALPHA ,Research Article ,Chromatin Immunoprecipitation ,Blotting, Western ,Biology ,Disease-Free Survival ,Histone Deacetylases ,03 medical and health sciences ,Downregulation and upregulation ,VHL ,Cell Line, Tumor ,Genetics ,medicine ,C-MYC ,Humans ,HYPOXIA-INDUCIBLE FACTOR-1-ALPHA ,Neoplasm Invasiveness ,TRICHOSTATIN ,Carcinoma, Renal Cell ,HDAC6 ,medicine.disease ,Isogenic human disease models ,Clear cell renal cell carcinoma ,030104 developmental biology ,Cell culture ,Tissue Array Analysis ,Cancer research ,Chromatin immunoprecipitation ,Estrogen receptor alpha - Abstract
Background Class I histone deacetylases (HDACs) have been reported to be overexpressed in clear cell renal cell carcinoma (ccRCC), whereas the expression of class II HDACs is unknown. Methods Four isogenic cell lines C2/C2VHL and 786-O/786-OVHL with differential VHL expression are used in our studies. Cobalt chloride is used to mimic hypoxia in vitro. HIF-2α knockdowns in C2 and 786-O cells is used to evaluate the effect on HDAC 1 expression and activity. Invasion and migration assays are used to investigate the role of HDAC 1 and HDAC 6 expression in ccRCC cells. Comparisons are made between experimental groups using the paired T-test, the two-sample Student’s T-test or one-way ANOVA, as appropriate. ccRCC and the TCGA dataset are used to observe the clinical correlation between HDAC 1 and HDAC 6 overexpression and overall and progression free survival. Results Our analysis of tumor and matched non-tumor tissues from radical nephrectomies showed overexpression of class I and II HDACs (HDAC6 only in a subset of patients). In vitro, both HDAC1 and HDAC6 over-expression increased cell invasion and motility, respectively, in ccRCC cells. HDAC1 regulated invasiveness by increasing matrix metalloproteinase (MMP) expression. Furthermore, hypoxia stimulation in VHL-reconstituted cell lines increased HIF isoforms and HDAC1 expression. Presence of hypoxia response elements in the HDAC1 promoter along with chromatin immunoprecipitation data suggests that HIF-2α is a transcriptional regulator of HDAC1 gene. Conversely, HDAC6 and estrogen receptor alpha (ERα) were co-localized in cytoplasm of ccRCC cells and HDAC6 enhanced cell motility by decreasing acetylated α-tubulin expression, and this biological effect was attenuated by either biochemical or pharmacological inhibition. Finally, analysis of human ccRCC specimens revealed positive correlation between HIF isoforms and HDAC. HDAC1 mRNA upregulation was associated with worse overall survival in the TCGA dataset. Conclusions Taking together, these results suggest that HDAC1 and HDAC6 may play a role in ccRCC biology and could represent rational therapeutic targets. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2604-7) contains supplementary material, which is available to authorized users.
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- 2016
29. Joint between-sample normalization and differential expression detection through ℓ0-regularized regression.
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Kefei Liu, Li Shen, and Hui Jiang
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Background: A fundamental problem in RNA-seq data analysis is to identify genes or exons that are differentially expressed with varying experimental conditions based on the read counts. The relativeness of RNA-seq measurements makes the between-sample normalization of read counts an essential step in differential expression (DE) analysis. In most existing methods, the normalization step is performed prior to the DE analysis. Recently, Jiang and Zhan proposed a statistical method which introduces sample-specific normalization parameters into a joint model, which allows for simultaneous normalization and differential expression analysis from log-transformed RNA-seq data. Furthermore, an ℓ0 penalty is used to yield a sparse solution which selects a subset of DE genes. The experimental conditions are restricted to be categorical in their work. Results: In this paper, we generalize Jiang and Zhan’s method to handle experimental conditions that are measured in continuous variables. As a result, genes with expression levels associated with a single or multiple covariates can be detected. As the problem being high-dimensional, non-differentiable and non-convex, we develop an efficient algorithm for model fitting. Conclusions: Experiments on synthetic data demonstrate that the proposed method outperforms existing methods in terms of detection accuracy when a large fraction of genes are differentially expressed in an asymmetric manner, and the performance gain becomes more substantial for larger sample sizes. We also apply our method to a real prostate cancer RNA-seq dataset to identify genes associated with pre-operative prostate-specific antigen (PSA) levels in patients. [ABSTRACT FROM AUTHOR]
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- 2019
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30. Bacillus halotolerans strain LYSX1-induced systemic resistance against the root-knot nematode Meloidogyne javanica in tomato.
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Xia, Yanfei, Li, Shen, Liu, Xueting, Zhang, Chong, Xu, Jianqiang, and Chen, Yingwu
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Purpose: Determination of the nematicidal potential and mode of action of bacteria isolated from tobacco rhizosphere soil against the root-knot nematode Meloidogyne javanica in tomato plants. Methods: Antagonistic bacteria were isolated from rhizosphere soil of tobacco infested with root-knot nematodes. Culture filtrate was used to examine nematicidal activity and ovicidal action of bacterial strains. Biocontrol of M. javanica and growth of treated tomato plants were assessed in pot experiments. To clarify whether secondary metabolites of bacteria in tomato roots induced systemic resistance to M. javanica, bacterial culture supernatants and second-stage juvenile nematodes were applied to spatially separated tomato roots using a split-root system. Bacterial strains were identified by 16S rDNA and gyrB gene sequencing and phylogenetic analysis. Results: Of the 15 bacterial strains isolated, four (LYSX1, LYSX2, LYSX3, and LYSX4) demonstrated nematicidal activity against second-stage juveniles of M. javanica, and strain LYSX1 showed the greatest antagonistic activity; there was dose-dependent variability in nematicidal activity and inhibition of egg mass hatching by strain LYSX1. In vivo application of LYSX1 to tomato seedlings decreased the number of egg masses and galls and increased the root and shoot fresh weight. Treatment of half of the split-root system with LYSX1 reduced nematode penetration to the other half by 41.64%. Strain LYSX1 was identified as Bacillus halotolerans. Conclusion: Bacillus halotolerans LYSX1 is a potential microbe for the sustainable biocontrol of root-knot nematodes through induced systemic resistance in tomato. [ABSTRACT FROM AUTHOR]
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- 2019
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31. Erratum to: Improving protein order-disorder classification using charge-hydropathy plots
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Bin Xue, Jingwei Meng, Fei Huang, Wei-Lun Hsu, Xiaowen Liu, Vladimir N. Uversky, A. Keith Dunker, Pedro R Romero, Christopher J. Oldfield, and Li Shen
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Normalization (statistics) ,Scale (ratio) ,Computer science ,Applied Mathematics ,Boundary (topology) ,Proteins ,Charge (physics) ,Function (mathematics) ,Biochemistry ,Computer Science Applications ,Combinatorics ,Intrinsically Disordered Proteins ,Structural Biology ,Order (group theory) ,Interval (graph theory) ,Animals ,Humans ,DNA microarray ,Erratum ,Amino Acids ,Databases, Protein ,Molecular Biology ,Algorithm ,Hydrophobic and Hydrophilic Interactions ,Algorithms - Abstract
During the production of our manuscript [1], an incorrect Figure Figure11 was put in place of the one we submitted, and we erred in not appropriately informing the production staff of this mistake. The corrected figure and the text describing this figure, as well as the figure legend, are present herein. Figure 1. Charge-Hydropathy plots. In (A) the IDP-Hydropathy scale was used, in (B) the Guy (1985) Hydropathy scale was used, and in (C) the Kyte-Doolittle (1981) hydropathy scale was used. Red circles indicate disordered proteins, blue circles indicate structured ... As stated in our manuscript [1], “The C-H plots generated using scale SVM parameters scale, Kyte-Doolittle hydropathy scale, and Guy hydropathy scale for whole protein prediction are shown in Figure Figure1.1. Figure Figure1A,1A, which is derived by SVM parameters scale, shows many fewer misclassified disordered proteins on the ordered side, compared to Figure Figure1B1B and and1C1C.” As further stated in reference [1]: “Figure 1. Charge-Hydropathy plots. In (A) the IDP-Hydropathy scale was used, in (B) the Guy (1985) Hydropathy scale was used, and in (C) the Kyte-Doolittle (1981) hydropathy scale was used. Red circles indicate disordered proteins, blue circles indicate structured proteins. For these plots, each scale was normalized to be in the interval of 0 to 1. The Guy’s scale is multiplied by -1 prior to normalization to conform to the energy rule set by Kyte-Doolittle scale. In (A) the function describing the boundary is: = 3.31 -0.97. In (B) the function describing the boundary is: = 2.32 -0.93. In (C), the function describing the boundary is = 1.35 -0.49.” For more details, the reader is referred to the published manuscript [1].
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- 2015
32. Implementation of WHO multimodal strategy for improvement of hand hygiene: a quasi-experimental study in a Traditional Chinese Medicine hospital in Xi'an, China.
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Li Shen, Xiaoqing Wang, Junming An, Jialu An, Ning Zhou, Lu Sun, Hong Chen, Lin Feng, Jing Han, and Xiaorong Liu
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HAND hygiene education , *NOROVIRUS diseases , *MEDICAL personnel , *PREVENTION , *DISEASES - Abstract
Background: Hand hygiene (HH) is an essential component for preventing and controlling of healthcare-associated infection (HAI), whereas compliance with HH among health care workers (HCWs) is frequently poor. This study aimed to assess compliance and correctness with HH before and after the implementation of a multimodal HH improvement strategy launched by the World Health Organization (WHO). Methods: A quasi-experimental study design including questionnaire survey generalizing possible factors affecting HH behaviors of HCWs and direct observation method was used to evaluate the effectiveness of WHO multimodal HH strategy in a hospital of Traditional Chinese Medicine. Multimodal HH improvement strategy was drawn up according to the results of questionnaire survey. Compliance and correctness with HH among HCWs were compared before and after intervention. Also HH practices for different indications based on WHO "My Five Moments for Hand Hygiene" were recorded. Results: In total, 553 HCWs participated in the questionnaire survey and multimodal HH improvement strategy was developed based on individual, environment and management levels. A total of 5044 observations in 23 wards were recorded in this investigation. The rate of compliance and correctness with HH improved from 66.27% and 47.75% at baseline to 80.53% and 88.35% after intervention. Doctors seemed to have better compliance with HH after intervention (84.04%) than nurses and other HCWs (81.07% and 69.42%, respectively). When stratified by indication, compliance with HH improved for all indications after intervention (P < 0.05) except for "after body fluid exposure risk" and "after touching patient surroundings". Conclusion: Implementing the WHO multimodal HH strategy can significantly improve HH compliance and correctness among HCWs. [ABSTRACT FROM AUTHOR]
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- 2017
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33. Improving protein order-disorder classification using charge-hydropathy plots
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Xiaowen Liu, Vladimir N. Uversky, Bin Xue, Wei-Lun Hsu, A. Keith Dunker, Jingwei Meng, Pedro Romero, Christopher J. Oldfield, Li Shen, and Fei Huang
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Intrinsically disordered proteins ,Scale (ratio) ,Applied Mathematics ,Research ,structure and disorder prediction ,Computational biology ,Biology ,Bioinformatics ,natively unstructured or unfolded proteins ,Biochemistry ,Plot (graphics) ,support vector machines ,Computer Science Applications ,Order (biology) ,Structural Biology ,Molecular Biology - Abstract
Background The earliest whole protein order/disorder predictor (Uversky et al., Proteins, 41: 415-427 (2000)), herein called the charge-hydropathy (C-H) plot, was originally developed using the Kyte-Doolittle (1982) hydropathy scale (Kyte & Doolittle., J. Mol. Biol, 157: 105-132(1982)). Here the goal is to determine whether the performance of the C-H plot in separating structured and disordered proteins can be improved by using an alternative hydropathy scale. Results Using the performance of the CH-plot as the metric, we compared 19 alternative hydropathy scales, with the finding that the Guy (1985) hydropathy scale (Guy, Biophys. J, 47:61-70(1985)) was the best of the tested hydropathy scales for separating large collections structured proteins and intrinsically disordered proteins (IDPs) on the C-H plot. Next, we developed a new scale, named IDP-Hydropathy, which further improves the discrimination between structured proteins and IDPs. Applying the C-H plot to a dataset containing 109 IDPs and 563 non-homologous fully structured proteins, the Kyte-Doolittle (1982) hydropathy scale, the Guy (1985) hydropathy scale, and the IDP-Hydropathy scale gave balanced two-state classification accuracies of 79%, 84%, and 90%, respectively, indicating a very substantial overall improvement is obtained by using different hydropathy scales. A correlation study shows that IDP-Hydropathy is strongly correlated with other hydropathy scales, thus suggesting that IDP-Hydropathy probably has only minor contributions from amino acid properties other than hydropathy. Conclusion We suggest that IDP-Hydropathy would likely be the best scale to use for any type of algorithm developed to predict protein disorder.
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- 2014
34. Computational genetics analysis of grey matter density in Alzheimer’s disease
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Jason H. Moore, Peter C. Andrews, Amanda L. Zieselman, Ting Hu, Jonathan M. Fisher, Li Shen, Andrew J. Saykin, and Casey S. Greene
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0303 health sciences ,Computer science ,Computational genomics ,Progressive dementia ,Late onset ,Computational biology ,Disease ,Grey matter ,Biochemistry ,Data science ,Software Article ,Computer Science Applications ,03 medical and health sciences ,Computational Mathematics ,0302 clinical medicine ,medicine.anatomical_structure ,Computational Theory and Mathematics ,Endophenotype ,Genetics ,medicine ,Molecular Biology ,Functional genomics ,030217 neurology & neurosurgery ,030304 developmental biology - Abstract
Background Alzheimer’s disease is the most common form of progressive dementia and there is currently no known cure. The cause of onset is not fully understood but genetic factors are expected to play a significant role. We present here a bioinformatics approach to the genetic analysis of grey matter density as an endophenotype for late onset Alzheimer’s disease. Our approach combines machine learning analysis of gene-gene interactions with large-scale functional genomics data for assessing biological relationships. Results We found a statistically significant synergistic interaction among two SNPs located in the intergenic region of an olfactory gene cluster. This model did not replicate in an independent dataset. However, genes in this region have high-confidence biological relationships and are consistent with previous findings implicating sensory processes in Alzheimer’s disease. Conclusions Previous genetic studies of Alzheimer’s disease have revealed only a small portion of the overall variability due to DNA sequence differences. Some of this missing heritability is likely due to complex gene-gene and gene-environment interactions. We have introduced here a novel bioinformatics analysis pipeline that embraces the complexity of the genetic architecture of Alzheimer’s disease while at the same time harnessing the power of functional genomics. These findings represent novel hypotheses about the genetic basis of this complex disease and provide open-access methods that others can use in their own studies.
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- 2014
35. Genome-wide network-based pathway analysis of CSF t-tau/Aβ1-42 ratio in the ADNI cohort.
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Wang Cong, Xianglian Meng, Jin Li, Qiushi Zhang, Feng Chen, Wenjie Liu, Ying Wang, Sipu Cheng, Xiaohui Yao, Jingwen Yan, Sungeun Kim, Saykin, Andrew J., Hong Liang, and Li Shen
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BRAIN imaging ,ALZHEIMER'S disease ,PROTEIN-protein interactions ,SINGLE nucleotide polymorphisms ,CEREBROSPINAL fluid ,NETWORK analysis (Communication) - Abstract
Background: The cerebrospinal fluid (CSF) levels of total tau (t-tau) and Aβ
1-42 are potential early diagnostic markers for probable Alzheimer's disease (AD). The influence of genetic variation on these CSF biomarkers has been investigated in candidate or genome-wide association studies (GWAS). However, the investigation of statistically modest associations in GWAS in the context of biological networks is still an under-explored topic in AD studies. The main objective of this study is to gain further biological insights via the integration of statistical gene associations in AD with physical protein interaction networks. Results: The CSF and genotyping data of 843 study subjects (199 CN, 85 SMC, 239 EMCI, 207 LMCI, 113 AD) from the Alzheimer's Disease Neuroimaging Initiative (ADNI) were analyzed. PLINK was used to perform GWAS on the ttau/Aβ1-42 ratio using quality controlled genotype data, including 563,980 single nucleotide polymorphisms (SNPs), with age, sex and diagnosis as covariates. Gene-level p-values were obtained by VEGAS2. Genes with p-value ≤ 0.05 were mapped on to a protein-protein interaction (PPI) network (9,617 nodes, 39,240 edges, from the HPRD Database). We integrated a consensus model strategy into the iPINBPA network analysis framework, and named it as CM-iPINBPA. Four consensus modules (CMs) were discovered by CM-iPINBPA, and were functionally annotated using the pathway analysis tool Enrichr. The intersection of four CMs forms a common subnetwork of 29 genes, including those related to tau phosphorylation (GSK3B, SUMO1, AKAP5, CALM1 and DLG4), amyloid beta production (CASP8, PIK3R1, PPA1, PARP1, CSNK2A1, NGFR, and RHOA), and AD (BCL3, CFLAR, SMAD1, and HIF1A). Conclusions: This study coupled a consensus module (CM) strategy with the iPINBPA network analysis framework, and applied it to the GWAS of CSF t-tau/Aβ1-42 ratio in an AD study. The genome-wide network analysis yielded 4 enriched CMs that share not only genes related to tau phosphorylation or amyloid beta production but also multiple genes enriching several KEGG pathways such as Alzheimer's disease, colorectal cancer, gliomas, renal cell carcinoma, Huntington's disease, and others. This study demonstrated that integration of gene-level associations with CMs could yield statistically significant findings to offer valuable biological insights (e.g., functional interaction among the protein products of these genes) and suggest high confidence candidates for subsequent analyses. [ABSTRACT FROM AUTHOR]- Published
- 2017
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36. Association analysis of rare variants near the APOE region with CSF and neuroimaging biomarkers of Alzheimer's disease.
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Kwangsik Nho, Sungeun Kim, Horgusluoglu, Emrin, Risacher, Shannon L., Li Shen, Dokyoon Kim, Seunggeun Lee, Foroud, Tatiana, Shaw, Leslie M., Trojanowski, John Q., Aisen, Paul S., Petersen, Ronald C., Jack, Clifford R., Weiner, Michael W., Green, Robert C., Toga, Arthur W., and Saykin, Andrew J.
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GENETICS of Alzheimer's disease ,BRAIN imaging ,BIOMARKERS ,CEREBROSPINAL fluid ,APOENZYMES - Abstract
Background: The APOE
ε 4 allele is the most significant common genetic risk factor for late-onset Alzheimer's disease (LOAD). The region surrounding APOE on chromosome 19 has also shown consistent association with LOAD. However, no common variants in the region remain significant after adjusting for APOE genotype. We report a rare variant association analysis of genes in the vicinity of APOE with cerebrospinal fluid (CSF) and neuroimaging biomarkers of LOAD. Methods: Whole genome sequencing (WGS) was performed on 817 blood DNA samples from the Alzheimer's Disease Neuroimaging Initiative (ADNI). Sequence data from 757 non-Hispanic Caucasian participants was used in the present analysis. We extracted all rare variants (MAF (minor allele frequency) < 0.05) within a 312 kb window in APOE's vicinity encompassing 12 genes. We assessed CSF and neuroimaging (MRI and PET) biomarkers as LOAD-related quantitative endophenotypes. Gene-based analyses of rare variants were performed using the optimal Sequence Kernel Association Test (SKAT-O). Results: A total of 3,334 rare variants (MAF < 0.05) were found within the APOE region. Among them, 72 rare non-synonymous variants were observed. Eight genes spanning the APOE region were significantly associated with CSF Aβ1-42 (p < 1.0 × 10-3 ). After controlling for APOE genotype and adjusting for multiple comparisons, 4 genes (CBLC, BCAM, APOE, and RELB) remained significant. Whole-brain surface-based analysis identified highly significant clusters associated with rare variants of CBLC in the temporal lobe region including the entorhinal cortex, as well as frontal lobe regions. Whole-brain voxel-wise analysis of amyloid PET identified significant clusters in the bilateral frontal and parietal lobes showing associations of rare variants of RELB with cortical amyloid burden. Conclusions: Rare variants within genes spanning the APOE region are significantly associated with LOAD-related CSF Aβ1-42 and neuroimaging biomarkers after adjusting for APOE genotype. These findings warrant further investigation and illustrate the role of next generation sequencing and quantitative endophenotypes in assessing rare variants which may help explain missing heritability in AD and other complex diseases. [ABSTRACT FROM AUTHOR]- Published
- 2017
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37. Cryptotanshinone enhances the effect of Arsenic trioxide in treating liver cancer cell by inducing apoptosis through downregulating phosphorylated- STAT3 in vitro and in vivo.
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Li Shen, Guangshun Zhang, Zhaohuan Lou, Guanhua Xu, and Guangji Zhang
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CELL proliferation ,ANIMAL experimentation ,APOPTOSIS ,ARSENIC compounds ,CELL lines ,HEPATOCELLULAR carcinoma ,IMMUNOHISTOCHEMISTRY ,LIVER tumors ,MICE ,OXIDES ,PHOSPHORYLATION ,RESEARCH funding ,STATISTICS ,WESTERN immunoblotting ,DATA analysis ,IN vitro studies ,ONE-way analysis of variance ,IN vivo studies - Abstract
Background: Arsenic trioxide (ATO) is approved for treating terminal-stage liver cancer in China. Cryptotanshinone (CT), a STAT3 inhibitor, has exhibited certain anti-tumor potency; however, the use of CT enhanced ATO for treating liver cancer has not been reported. Here we try to elucidate how CT could enhance the efficacy of ATO for treating liver cancer and its correlation to STAT3 in vitro and in vivo. Methods: Cell viability of ATO combined with CT was assessed by ¹MTT assay. Cell apoptosis induced by ATO combined with CT was detected by Annexin V/PI staining and apoptosis-related proteins were detected by western blotting. STAT3-related proteins were analysis by western blotting analysis and Immunofluorescence assays. Efficacy evaluation of ATO combined with CT on xenograft was carried in nude mice and related proteins were analysis by Immunohistochemistry assays. Results: First we evaluated cell vitality, and our data indicated that the ATO combined with CT showed obvious growth inhibition of Bel-7404 cells compared to ATO or CT alone. Next we found that ATO combined with CT induced cell apoptosis in Bel-7404 cells and upregulated the activation of apoptosis-related proteins cleaved- caspase-3, cleaved-caspase-9, and cleaved-poly(ADP-ribose) polymerase in a time-dependent manner. Next, we found that ATO combined with CT not only inhibited the constitutive levels of phosphorylated-JAK2 and phosphorylated-STAT3
Tyr705 but did so in a time-dependent manner. We also found that ATO combined with CT reversed the upregulated expression of phosphorylated-STAT3Tyr705 stimulated by interleukin-6 and downregulated STAT3 direct target genes and the anti-apoptotic proteins Bcl-2, XIAP, and survivin but obviously upregulated the promoting apoptosis proteins Bak,.In vivo studies showed that ATO combined with CT decreased tumor growth. Tumors from ATO combined with CT--treated mice showed decreased levels of phosphorylated-STAT3Tyr705 and the anti-apoptotic protein Bcl-2 but an increased level of pro-apoptotic protein Bax. Conclusions: Our study provides strong evidence that CT could enhance the efficacy of ATO in treating liver cancer both in vitro and in vivo. Downregulation of phosphorylated-STAT3 expression may play an important role in inducing apoptosis of Bel-7404 cells. [ABSTRACT FROM AUTHOR]- Published
- 2017
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38. High throughput 16SrRNA gene sequencing reveals the correlation between Propionibacterium acnes and sarcoidosis.
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Meng-Meng Zhao, Shan-Shan Du, Qiu-Hong Li, Tao Chen, Hui Qiu, Qin Wu, Shan-Shan Chen, Ying Zhou, Yuan Zhang, Yang Hu, Yi-Liang Su, Li Shen, Fen Zhang, Dong Weng, Hui-Ping Li, Zhao, Meng-Meng, Du, Shan-Shan, Li, Qiu-Hong, Chen, Tao, and Qiu, Hui
- Subjects
RNA sequencing ,GENES ,CUTIBACTERIUM acnes ,RIBOSOMAL RNA ,SARCOIDOSIS ,COMPARATIVE studies ,GRAM-positive bacteria ,LYMPH nodes ,RESEARCH methodology ,MEDICAL cooperation ,RESEARCH ,RESEARCH evaluation ,RNA ,STATISTICS ,GRAM-positive bacterial infections ,EVALUATION research ,SEQUENCE analysis - Abstract
Objective: This study aims to use high throughput 16SrRNA gene sequencing to examine the bacterial profile of lymph node biopsy samples of patients with sarcoidosis and to further verify the association between Propionibacterium acnes (P. acnes) and sarcoidosis.Methods: A total of 36 mediastinal lymph node biopsy specimens were collected from 17 cases of sarcoidosis, 8 tuberculosis (TB group), and 11 non-infectious lung diseases (control group). The V4 region of the bacterial 16SrRNA gene in the specimens was amplified and sequenced using the high throughput sequencing platform MiSeq, and bacterial profile was established. The data analysis software QIIME and Metastats were used to compare bacterial relative abundance in the three patient groups.Results: Overall, 545 genera were identified; 38 showed significantly lower and 29 had significantly higher relative abundance in the sarcoidosis group than in the TB and control groups (P < 0.01). P. acnes 16SrRNA was exclusively found in all the 17 samples of the sarcoidosis group, whereas was not detected in the TB and control groups. The relative abundance of P. acnes in the sarcoidosis group (0.16% ± 0. 11%) was significantly higher than that in the TB (Metastats analysis: P = 0.0010, q = 0.0044) and control groups (Metastats analysis: P = 0.0010, q = 0.0038). The relative abundance of P. granulosum was only 0.0022% ± 0. 0044% in the sarcoidosis group. P. granulosum 16SrRNA was not detected in the other two groups.Conclusion: High throughput 16SrRNA gene sequencing appears to be a useful tool to investigate the bacterial profile of sarcoidosis specimens. The results suggest that P. acnes may be involved in sarcoidosis development. [ABSTRACT FROM AUTHOR]- Published
- 2017
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39. Pancreatic cancer adjuvant radiotherapy target volume design: based on the postoperative local recurrence spatial location.
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Wei Yu, Wei Hu, Yongjie Shui, Xiaoyang Zhu, Chao Li, Xiaoqiu Ren, Xueli Bai, Risheng Yu, Li Shen, Tingbo Liang, Lei Zheng, and Qichun Wei
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PANCREATIC cancer ,CANCER relapse ,PANCREATIC tumors ,RADIOTHERAPY ,PANCREATIC surgery - Abstract
Objectives: To explore the areas at highest risk for postoperative pancreatic cancer local recurrence according to the spatial location of local failures, with the aim to provide a precise target volume for pancreatic cancer adjuvant radiotherapy. Methods: Patients with pancreatic cancer who had undergone surgery for the primary tumor in pancreas at our institution from January 2010 to August 2015 were retrospectively analyzed. All local recurrences were plotted on the computed tomography (CT) image of a representative patient according to their relative coordinates to superior mesenteric artery (SMA) or celiac axis (CA). Adjuvant radiation clinical target volume (CTV)-90 and CTV-80 were created to cover 90% and 80% plotted recurrences. This planning approach was applied in four simulated cases with comparison to the plan according to RTOG 0848 contouring consensus guidelines. Raystation v4.5.1.14 was used for analyzing high throughput physics data. Results: Eighty-three patients with local recurrence were included from 305 postoperative pancreatic cancer patients who did not receive adjuvant radiotherapy. Thirty-one (37%) patients did not have adjuvant therapy at all, 52 (63%) patients undergone adjuvant chemotherapy alone. Spatial location of local failure was created. Most recurrences occurred near CA or SMA. CTV-90 was generated through expanding the combined SMA and CA contours by 30 mm right-lateral, 21 mm left-lateral, 20 mm anterior, 13 mm posterior, 10 mm superior, and 20 mm inferior. CTV-80, smaller in volume, was also created for simultaneous integrated boost. Through comparison and analysis of the simulated cases, the radiation volumes proposed were much smaller than those with RTOG 0848 contouring consensus guidelines (average volume: PTV-80 = 120 ml, PTV-90 = 220 ml, RTOG PTV = 490 ml). Accordingly, the organs at risk received less irradiation dose with the proposed CTV-90 and CTV-80. Conclusions: Smaller adjuvant radiotherapy CTVs targeting the high-risk local failure areas of postoperative pancreatic cancer were proposed, according to the three-dimensional spatial location of local recurrences. This may help to minimize radiation-related toxicities, achieve dose escalation, and finally reduce local recurrence. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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40. Structured sparse CCA for brain imaging genetics via graph OSCAR.
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Lei Du, Heng Huang, Jingwen Yan, Sungeun Kim, Risacher, Shannon, Inlow, Mark, Moore, Jason, Saykin, Andrew, and Li Shen
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BRAIN imaging ,GENETICS ,CANONICAL correlation (Statistics) ,GENETIC markers ,MULTIVARIATE analysis - Abstract
Background: Recently, structured sparse canonical correlation analysis (SCCA) has received increased attention in brain imaging genetics studies. It can identify bi-multivariate imaging genetic associations as well as select relevant features with desired structure information. These SCCA methods either use the fused lasso regularizer to induce the smoothness between ordered features, or use the signed pairwise difference which is dependent on the estimated sign of sample correlation. Besides, several other structured SCCA models use the group lasso or graph fused lasso to encourage group structure, but they require the structure/group information provided in advance which sometimes is not available. Results: We propose a new structured SCCA model, which employs the graph OSCAR (GOSCAR) regularizer to encourage those highly correlated features to have similar or equal canonical weights. Our GOSCAR based SCCA has two advantages: 1) It does not require to pre-define the sign of the sample correlation, and thus could reduce the estimation bias. 2) It could pull those highly correlated features together no matter whether they are positively or negatively correlated. We evaluate our method using both synthetic data and real data. Using the 191 ROI measurements of amyloid imaging data, and 58 genetic markers within the APOE gene, our method identifies a strong association between APOE SNP rs429358 and the amyloid burden measure in the frontal region. In addition, the estimated canonical weights present a clear pattern which is preferable for further investigation. Conclusions: Our proposed method shows better or comparable performance on the synthetic data in terms of the estimated correlations and canonical loadings. It has successfully identified an important association between an Alzheimer's disease risk SNP rs429358 and the amyloid burden measure in the frontal region. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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41. HDAC 1 and 6 modulate cell invasion and migration in clear cell renal cell carcinoma.
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Ramakrishnan, Swathi, Sheng Yu Ku, Ciamporcero, Eric, Miles, Kiersten Marie, Attwood, Kris, Chintala, Sreenivasulu, Li Shen, Ellis, Leigh, Sotomayor, Paula, Swetzig, Wendy, Ray Huang, Conroy, Dylan, Orillion, Ashley, Das, Gokul, Pili, Roberto, Ku, ShengYu, Shen, Li, and Huang, Ray
- Subjects
CARCINOMA ,DEACETYLASES ,ENZYMES ,ESTROGEN receptors ,GENETIC regulation - Abstract
Background: Class I histone deacetylases (HDACs) have been reported to be overexpressed in clear cell renal cell carcinoma (ccRCC), whereas the expression of class II HDACs is unknown.Methods: Four isogenic cell lines C2/C2VHL and 786-O/786-OVHL with differential VHL expression are used in our studies. Cobalt chloride is used to mimic hypoxia in vitro. HIF-2α knockdowns in C2 and 786-O cells is used to evaluate the effect on HDAC 1 expression and activity. Invasion and migration assays are used to investigate the role of HDAC 1 and HDAC 6 expression in ccRCC cells. Comparisons are made between experimental groups using the paired T-test, the two-sample Student's T-test or one-way ANOVA, as appropriate. ccRCC and the TCGA dataset are used to observe the clinical correlation between HDAC 1 and HDAC 6 overexpression and overall and progression free survival.Results: Our analysis of tumor and matched non-tumor tissues from radical nephrectomies showed overexpression of class I and II HDACs (HDAC6 only in a subset of patients). In vitro, both HDAC1 and HDAC6 over-expression increased cell invasion and motility, respectively, in ccRCC cells. HDAC1 regulated invasiveness by increasing matrix metalloproteinase (MMP) expression. Furthermore, hypoxia stimulation in VHL-reconstituted cell lines increased HIF isoforms and HDAC1 expression. Presence of hypoxia response elements in the HDAC1 promoter along with chromatin immunoprecipitation data suggests that HIF-2α is a transcriptional regulator of HDAC1 gene. Conversely, HDAC6 and estrogen receptor alpha (ERα) were co-localized in cytoplasm of ccRCC cells and HDAC6 enhanced cell motility by decreasing acetylated α-tubulin expression, and this biological effect was attenuated by either biochemical or pharmacological inhibition. Finally, analysis of human ccRCC specimens revealed positive correlation between HIF isoforms and HDAC. HDAC1 mRNA upregulation was associated with worse overall survival in the TCGA dataset.Conclusions: Taking together, these results suggest that HDAC1 and HDAC6 may play a role in ccRCC biology and could represent rational therapeutic targets. [ABSTRACT FROM AUTHOR]- Published
- 2016
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42. A novel and accurate predictor of survival for patients with hepatocellular carcinoma after surgical resection: the neutrophil to lymphocyte ratio (NLR) combined with the aspartate aminotransferase/platelet count ratio index (APRI).
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Fei Ji, Yao Liang, Shun-Jun Fu, Zhi-Yong Guo, Man Shu, Shun-Li Shen, Shao-Qiang Li, Bao-Gang Peng, Li-Jian Liang, Yun-Peng Hua, Ji, Fei, Liang, Yao, Fu, Shun-Jun, Guo, Zhi-Yong, Shu, Man, Shen, Shun-Li, Li, Shao-Qiang, Peng, Bao-Gang, Liang, Li-Jian, and Hua, Yun-Peng
- Subjects
HEPATECTOMY ,LIVER cancer ,NEUTROPHILS ,LYMPHOCYTES ,BIOMARKERS ,ACQUISITION of data ,RETROSPECTIVE studies ,PROGNOSIS ,ASPARTATE aminotransferase ,HEPATOCELLULAR carcinoma ,LIVER tumors ,NUTRITIONAL assessment ,SURVIVAL analysis (Biometry) ,PLATELET count - Abstract
Background: The occurrence and development of hepatocellular carcinoma (HCC) depends largely on such non-tumor factors as inflammatory condition, immune state, viral infection and liver fibrosis. Various inflammation-based prognostic scores have been associated with survival in patients with HCC, such as the neutrophil/lymphocyte ratio (NLR), the platelet/lymphocyte ratio (PLR) and the prognostic nutritional index (PNI). The aspartate aminotransferase/platelet count ratio index (APRI) is thought to be a biomarker of liver fibrosis and cirrhosis. This study aims to evaluate the ability of these indices to predict survival in HCC patients after curative hepatectomy, and probe the increased prognostic accuracy of APRI combined with established inflammation-based prognostic scores.Methods: Data were collected retrospectively from 321 patients who underwent curative resection for HCC. Preoperative NLR, PLR, PNI, APRI and clinico-pathological variables were analyzed. Univariate and multivariate analyses were performed to identify the predictive value of the above factors for disease-free survival (DFS) and overall survival (OS).Results: Univariate analysis showed that NLR, PLR, PNI and APRI were significantly associated with DFS and OS in HCC patients with curative resection. Multivariate analysis showed that NLR and APRI were superior to PLR and PNI, and both were independently correlated with DFS and OS. Preoperative NLR >2 or APRI >1.68 predicted poor prognosis of patients with HCC after hepatectomy. Furthermore, the predictive range of NLR combined with APRI was more sensitive than that of either measure alone.Conclusions: Preoperative NLR and APRI are independent predictors of DFS and OS in patients with HCC after surgical resection. Higher levels of NLR or APRI predict poorer outcomes in HCC patients. Intriguingly, combining NLR and APRI increases the prognostic accuracy of testing. [ABSTRACT FROM AUTHOR]- Published
- 2016
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43. Network-based analysis of genetic variants associated with hippocampal volume in Alzheimer's disease: a study of ADNI cohorts.
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Song, Ailin, Jingwen Yan, Sungeun Kim, Risacher, Shannon Leigh, Wong, Aaron K., Saykin, Andrew J., Li Shen, and Greene, Casey S.
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HUMAN genetic variation ,ALZHEIMER'S disease ,NEURODEGENERATION ,BRAIN imaging ,HIPPOCAMPUS (Brain) - Abstract
Background: Alzheimer's disease (AD) is a neurodegenerative disease that causes dementia. While molecular basis of AD is not fully understood, genetic factors are expected to participate in the development and progression of the disease. Our goal was to uncover novel genetic underpinnings of Alzheimer's disease with a bioinformatics approach that accounts for tissue specificity. Findings: We performed genome-wide association studies (GWAS) for hippocampal volume in two Alzheimer's Disease Neuroimaging Initiative (ADNI) cohorts. We used these GWAS in a subsequent tissue-specific network-wide association study (NetWAS), which applied nominally significant associations in the initial GWAS to identify disease relevant patterns in a functional network for the hippocampus. We compared prioritized gene lists from NetWAS and GWAS with literature curated AD-associated genes from the Online Mendelian Inheritance in Man (OMIM) database. In the ADNI-1 GWAS, where we also observed an enrichment of low p-values, NetWAS prioritized disease-gene associations in accordance with OMIM annotations. This was not observed in the ADNI-2 dataset. We provide source code to replicate these analyses as well as complete results under permissive licenses. Conclusions: We performed the first analysis of hippocampal volume using NetWAS, which uses machine learning algorithms applied to tissue-specific functional interaction network to prioritize GWAS results. Our findings support the idea that tissue-specific networks may provide helpful context for understanding the etiology of common human diseases and reveal challenges that network-based approaches encounter in some datasets. Our source code and intermediate results files can facilitate the development of methods to address these challenges. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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44. Green tea polyphenols supplementation and Tai Chi exercise for postmenopausal osteopenic women: safety and quality of life report
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Jia-Sheng Wang, Chwan-Li Shen, Barbara C. Pence, James K. Yeh, Yan Zhang, Ming-Chien Chyu, Susan Doctolero, and Carol K Felton
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GTP' ,Emotions ,Green tea extract ,Kidney ,Gastroenterology ,Camellia sinensis ,0302 clinical medicine ,030212 general & internal medicine ,education.field_of_study ,Traditional medicine ,General Medicine ,lcsh:Other systems of medicine ,Middle Aged ,3. Good health ,Postmenopause ,Mental Health ,Liver ,Female ,Research Article ,medicine.medical_specialty ,Population ,Renal function ,Placebo ,03 medical and health sciences ,Phenols ,Internal medicine ,medicine ,Humans ,education ,Aged ,Flavonoids ,Analysis of Variance ,Tea ,business.industry ,Plant Extracts ,Kidney metabolism ,Repeated measures design ,Polyphenols ,medicine.disease ,lcsh:RZ201-999 ,Osteopenia ,Bone Diseases, Metabolic ,Complementary and alternative medicine ,Dietary Supplements ,Quality of Life ,Patient Compliance ,Tai Ji ,business ,030217 neurology & neurosurgery ,Phytotherapy - Abstract
Background Evidence suggests that both green tea polyphenols (GTP) and Tai Chi (TC) exercise may benefit bone health in osteopenic women. However, their safety in this population has never been systematically investigated. In particular, there have been hepatotoxicity concerns related to green tea extract. This study was to evaluate the safety of 24 weeks of GTP supplementation combined with TC exercise in postmenopausal osteopenic women, along with effects on quality of life in this population. Methods 171 postmenopausal women with osteopenia were randomly assigned to 4 treatment arms for 24 weeks: (1) Placebo (500 mg starch/day), (2) GTP (500 mg GTP/day), (3) Placebo + TC (placebo plus TC training at 60 min/session, 3 sessions/week), and (4) GTP + TC (GTP plus TC training). Safety was examined by assessing liver enzymes (aspartate aminotransferase, alanine aminotransferase), alkaline phosphatase, and total bilirubin at baseline and every 4 weeks. Kidney function (urea nitrogen and creatinine), calcium, and inorganic phosphorus were also assessed at the same times. Qualify of life using SF-36 questionnaire was evaluated at baseline, 12, and 24 weeks. A mixed model of repeated measures ANOVA was applied for analysis. Results 150 subjects completed the study (12% attrition rate). The compliance rates for study agents and TC exercise were 89% and 83%, respectively. Neither GTP supplementation nor TC exercise affected liver or kidney function parameters throughout the study. No adverse event due to study treatment was reported by the participants. TC exercise significantly improved the scores for role-emotional and mental health of subjects, while no effect on quality of life was observed due to GTP supplementation. Conclusions GTP at a dose of 500 mg/day and/or TC exercise at 3 hr/week for 24 weeks appear to be safe in postmenopausal osteopenic women, particularly in terms of liver and kidney functions. TC exercise for 24 weeks (3 hr/wk) significantly improved quality of life in terms of role-emotional and mental health in these subjects. ClinicalTrials.gov identifier: NCT00625391.
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- 2010
45. Comparison of the epidermal growth factor receptor protein expression between primary non-small cell lung cancer and paired lymph node metastases: implications for targeted nuclide radiotherapy
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Li Shen, Qichun Wei, Jian Li, Qiongge Hu, Chuangzhou Rao, Jianhua Ma, and Chen Zhang
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Oncology ,Adult ,Male ,Cancer Research ,medicine.medical_specialty ,Lung Neoplasms ,medicine.medical_treatment ,Receptor expression ,lcsh:RC254-282 ,Metastasis ,Internal medicine ,Carcinoma, Non-Small-Cell Lung ,medicine ,Humans ,Epidermal growth factor receptor ,Lung cancer ,Radionuclide Imaging ,Lymph node ,Aged ,biology ,Research ,Middle Aged ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,medicine.disease ,Primary tumor ,Immunohistochemistry ,Radiation therapy ,ErbB Receptors ,medicine.anatomical_structure ,Lymphatic Metastasis ,biology.protein ,Female - Abstract
Background The knowledge of Epidermal growth factor receptor (EGFR) expression in metastases of NSCLC was limited. In receptor-mediated targeted nuclide radiotherapy, tumor cells are killed with delivered radiation and therapeutic efficiency is mainly dependent on the receptor expression. Thus, the level and stability of receptor expression in both primary tumors and corresponding metastases is crucial in the assessment of a receptor as target. The goal of this study was to evaluate whether EGFR is suitable as target for clinical therapy. Methods Expression of EGFR was investigated immunohistochemically in paired samples of lymph node metastases and corresponding NSCLC primary lesions (n = 51). EGFR expression was scored as 0, 1+, 2+ or 3+. Results Positive (1+, 2+ or 3+) EGFR immunostaining was evident in 36 of 47 (76.6%) analysed NSCLC primary tumors, and in 78.7% of the corresponding lymph node metastases. When EGFR expression is classified as positive or negative, discordance between the primary tumors and the corresponding metastases was observed in 5 cases (10.6%). EGFR overexpression (2+ or 3+) was found in 53.2% (25/47) of the NSCLC primary tumors and 59.6% of the corresponding metastases. Nine out of the 47 paired samples (19.2%) were discordant: Only three patients who had EGFR overexpression in the primary tumors showed EGFR downregulation (0 or 1+) in lymph node metastases, while six patients changed the other way around. Conclusions The EGFR expression in the primary tumor and the corresponding metastasis is discordant in about 10% of the patients. When overexpression is considered, the discordance is observed in about 20% of the cases. However, concerning EGFR overexpression in the primary tumors, similar expression in the metastases could be predicted with a reasonably high probability, which is encouraging for testing of EGFR targeted nuclide radiotherapy.
- Published
- 2010
46. The prognostic value of combined TGF-ß1 and ELF in hepatocellular carcinoma.
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Fei Ji, Shun-Jun Fu, Shun-Li Shen, Long-Juan Zhang, Qing-Hua Cao, Shao-Qiang Li, Bao-Gang Peng, Li-Jian Liang, and Yun-Peng Hua
- Subjects
LIVER cancer ,TRANSFORMING growth factors ,CELLULAR signal transduction ,TUMOR markers ,FODRIN ,TUMOR suppressor genes ,GENE expression ,PROGNOSIS - Abstract
Background: Tumor suppression of Transforming Growth Factor (TGF-β) signaling pathway requires an adaptor protein, Embryonic Liver Fodrin (ELF). Disruption of ELF expression resulted in miscolocalization of Smad3 and Smad4, then disruption of TGF-β signaling. However, the prognostic significance of ELF for hepatocellular carcinoma (HCC) hasn't been clarified. This study aimed to investigate whether measuring both TGF-β1 and ELF provides a more powerful predictor for HCC prognosis than either marker alone. Methods: TGF-β1 and ELF protein were detected by immunohistochemistry. The relationship between TGF-β1/ELF expression and patients' clinicopathologic factors was analyzed. The association between TGF-β1/ELF expression and disease-free survival and overall survival was analyzed by Kaplan-Meier curves, the log-rank test, and Multivariate Cox regression analyses. Results: The expression of TGF-β1 in HCC tissues was significantly higher than that in normal liver tissues. Conversely, the expression of ELF in HCC tissues declined markedly. ELF protein was correlated with HBsAg, tumor size, tumor number, TNM and recurrence. Data also indicated a significant negative correlation between ELF and TGF-β1. Patients with high TGF-β1 expression or/and low ELF expression appeared to have a poor postoperative disease-free survival and overall survival compared with those with low TGF-β1 expression or/and high ELF expression. Furthermore, the predictive range of ELF combined with TGF-β1 was more sensitive than that of either one alone. Conclusions: TGF-β1 and ELF protein are potential and reliable biomarkers for predicting prognosis in HCC patients after hepatic resection. Our current study has demonstrated that the prognostic accuracy of testing can be enhanced by their combination. [ABSTRACT FROM AUTHOR]
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- 2015
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47. Risk factors and outcomes of postoperative pancreatic fistula after pancreatico-duodenectomy: an audit of 532 consecutive cases.
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Shun-Jun Fu, Shun-Li Shen, Shao-Qiang Li, Wen-Jie Hu, Yun-Peng Hua, Ming Kuang, Li-Jian Liang, and Bao-Gang Peng
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PANCREATIC fistula ,PANCREATICODUODENECTOMY ,HEALTH outcome assessment ,RISK factors of pneumonia ,ABDOMINAL abscess - Abstract
Background: Pancreatic fistula (PF) remains the most challenging complication after pancreatico-duodenectomy (PD). The purpose of this study was to identify the risk factors of PF and delineate its impact on patient outcomes. Methods: We retrospectively reviewed clinical data of 532 patients who underwent PD and divided them into PF group and no PF group. Risk factors and outcomes of PF following PD were examined. Results: PF was found in 65 (12.2%) cases, of whom 11 were classified into ISGPF grade A, 42 grade B, and 12 grade C. Clinically serious postoperative complications in the PF versus no PF group were mortality, abdominal bleeding, bile leak, intra-abdominal abscess and pneumonia. Univariate and multivariate analysis showed that blood loss ≥ 500 ml, pancreatic duct diameter ≤ 3 mm and pancreatico-jejunostomy type were independent risk factors of PF after PD. Conclusions: Blood loss ≥ 500 ml, pancreatic duct diameter ≤ 3 mm and pancreatico-jejunostomy type were independent risk factors of PF after PD. PF was related with higher mortality rate, longer hospital stay, and other complications. [ABSTRACT FROM AUTHOR]
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- 2015
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48. Improving protein order-disorder classification using charge-hydropathy plots.
- Author
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Fei Huang, Oldfield, Christopher J., Bin Xue, Wei-Lun Hsu, Jingwei Meng, Xiaowen Liu, Li Shen, Romero, Pedro, Uversky, Vladimir N., and Dunker, A. Keith
- Abstract
Background: The earliest whole protein order/disorder predictor (Uversky et al., Proteins, 41: 415-427 (2000)), herein called the charge-hydropathy (C-H) plot, was originally developed using the Kyte-Doolittle (1982) hydropathy scale (Kyte & Doolittle., J. Mol. Biol, 157: 105-132(1982)). Here the goal is to determine whether the performance of the C-H plot in separating structured and disordered proteins can be improved by using an alternative hydropathy scale. Results: Using the performance of the CH-plot as the metric, we compared 19 alternative hydropathy scales, with the finding that the Guy (1985) hydropathy scale (Guy, Biophys. J, 47:61-70(1985)) was the best of the tested hydropathy scales for separating large collections structured proteins and intrinsically disordered proteins (IDPs) on the C-H plot. Next, we developed a new scale, named IDP-Hydropathy, which further improves the discrimination between structured proteins and IDPs. Applying the C-H plot to a dataset containing 109 IDPs and 563 nonhomologous fully structured proteins, the Kyte-Doolittle (1982) hydropathy scale, the Guy (1985) hydropathy scale, and the IDP-Hydropathy scale gave balanced two-state classification accuracies of 79%, 84%, and 90%, respectively, indicating a very substantial overall improvement is obtained by using different hydropathy scales. A correlation study shows that IDP-Hydropathy is strongly correlated with other hydropathy scales, thus suggesting that IDPHydropathy probably has only minor contributions from amino acid properties other than hydropathy. Conclusion: We suggest that IDP-Hydropathy would likely be the best scale to use for any type of algorithm developed to predict protein disorder. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
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49. Fuzheng Huayu recipe alleviates hepatic fibrosis via inhibiting TNF-α induced hepatocyte apoptosis.
- Author
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Yan-yan Tao, Xiu-chuan Yan, Tao Zhou, Li Shen, Zu-long Liu, and Cheng-hai Liu
- Subjects
CHINESE medicine ,FIBROSIS ,ANIMAL experimentation ,APOPTOSIS ,BIOPHYSICS ,ENZYME-linked immunosorbent assay ,FLOW cytometry ,FLUORESCENT antibody technique ,IMMUNOBLOTTING ,LIVER diseases ,RESEARCH methodology ,MEDICINAL plants ,MICE ,RESEARCH funding ,TUMOR necrosis factors ,DATA analysis software ,DESCRIPTIVE statistics ,IN vitro studies ,PREVENTION - Abstract
Background What was the relationship of Fuzheng Huayu recipe (FZHY) inhibiting hepatocyte apoptosis and HSC activation at different stage of liver fibrosis? In order to answer this question, the study was carried out to dynamically observe FZHY's effect on hepatocyte apoptosis and HSC activation and further explored underling mechanism of FZHY against hepatocyte apoptosis. Methods Mice were randomly divided into four groups: normal, model, FZHY, and N-acetylcystein (NAC) groups. Acute hepatic injury and liver fibrosis in mice were induced by CCl4. Three days before the first CCl4 injection, treatment with FZHY powder or NAC respectively was started. In vitro, primary hepatocytes were pretreated with FZHY medicated serum or ZVAD- FMK and then incubated with ActD and TNF-α. Primary HSCs were treated with DNA from apoptotic hepatocytes incubated by Act D/TNF-α or FZHYmedicated serum. Liver sections were analyzed for HE staining and immunohistochemical evaluation of apoptosis. Serum ALT and AST levels and Alb content and TNF-α expression in liver tissue were detected. Hyp content was assayed and collagen deposition was visualized. Expressions of α-SMA and type I collagen were analyzed by immunofluorescence and immunoblotting. Flow cytometry, immunofluorescence, and DNA ladder for hepatocyte apoptosis and immunoblotting for TNF-R1, Bcl-2 and Bax were also analyzed. Results Mice showed characteristic features of massive hepatocytes apoptosis in early stage of liver injury and developed severe hepatic fibrosis in later phase. FZHY treatment significantly alleviated acute liver injury and hepatocyte apoptosis, and inhibited liver fibrosis by decreasing α-SMA expression and hepatic Hyp content. In vitro, primary hepatocytes were induced by TNF-α and Act D. The anti-apoptotic effect of FZHY was generated by reducing TNFR1 expression and balancing the expressions of Bcl-2 and Bax. Meanwhile, the nuclear DNA from apoptotic hepatocytes stimulated HSC activation in a dose dependent manner, and the DNA from apoptotic hepatocytes treated with FZHY or Z-VAD-FMK reduced HSC activation and type I collagen expression. Conclusion These findings suggested that FZHY suppressed hepatocyte apoptosis through regulating mediators in death receptor and mitochondrial pathways, and the effect of FZHY on hepatocyte apoptosis might play an important role in inhibiting liver fibrosis. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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50. Elevated preoperative peripheral blood monocyte count predicts poor prognosis for hepatocellular carcinoma after curative resection.
- Author
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Shun-Li Shen, Shun-Jun Fu, Xiong-Qing Huang, Bin Chen, Ming Kuang, Shao-Qiang Li, Yun-Peng Hua, Li-Jian Liang, and Bao-Gang Peng
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- *
PREOPERATIVE care , *BLOOD cell count , *SURGICAL excision , *LIVER cancer , *RETROSPECTIVE studies , *PROGNOSIS - Abstract
Background: Peripheral blood monocyte count is an easily assessable parameter of systemic inflammatory response. The aim of this study was to determine whether monocyte count was prognostic in hepatocellular carcinoma (HCC) following hepatic resection. Methods: We retrospectively reviewed 351 patients with HCC treated with hepatic resection from 2006 to 2009. Preoperative absolute peripheral monocyte count, demographics, and clinical and pathological data were analyzed. Results: On univariate and multivariate analysis, elevated monocyte counts (≥545/mm³), tumor size ≥5 cm, non-capsulation, and multiple tumors were associated with poor disease-free survival (DFS) and overall survival (OS). The 1-, 3- and 5-year DFS rates were 58%, 41% and 35%, respectively, for patients with monocyte counts <545/mm³, and 36%, 23% and 21% for patients with monocyte counts ≥545/mm³. Correspondingly, the 1-, 3- and 5-year OS rates were 79%, 53% and 46% for monocyte counts <545/mm³, and 64%, 36% and 29% for monocyte counts ≥545/mm³. Subgroup analysis indicated that DFS after hepatic resection in hepatitis B virus (HBV)-infected patients was significantly better in those with a peripheral blood monocyte counts <545/mm³, but it did not differ between patients without HBV infection. In addition, DFS was significantly better for patients with a peripheral blood monocyte count <545/mm³, whether or not cirrhosis was present. Patients with elevated monocyte counts tended to have larger tumors. Conclusions: Elevated preoperative monocyte count is an independent predictor of worse prognosis for patients with HCC after hepatic resection, especially for those with HBV infection. Postoperative adjuvant treatment might be considered for patients with elevated preoperative monocyte counts. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
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