201
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Sun J, Zhu M, Shen W, Wang C, Dai J, Xu L, Jin G, Hu Z, Ma H, Shen H. A potentially functional polymorphism in ABCG2 predicts clinical outcome of non-small cell lung cancer in a Chinese population. Pharmacogenomics J 2016; 17:280-285. [PMID: 26951883 DOI: 10.1038/tpj.2016.2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 10/06/2015] [Accepted: 11/26/2015] [Indexed: 12/29/2022]
Abstract
ABCG2, CD133 and CD117 are pivotal markers of cancer stem cell, which are involved in carcinogenesis and cancer progression. The expression of these genes has been reported to be associated with the development and progression of many cancers, including non-small cell lung cancer (NSCLC). We selected and genotyped 9 potentially functional single-nucleotide polymorphisms in the 3 genes in a clinical cohort of 1001 NSCLC patients in a Chinese population. We found that variant genotypes of ABCG2 rs3114020 were associated with a significantly increased risk of death for NSCLC (additive model: adjusted hazard ratio=1.25, 95% confidence intervals=1.10-1.42, P<0.001). Further stepwise regression analysis suggested that rs3114020 was an independent risk factor for the prognosis of NSCLC. Besides, histology interacted with the genetic effect of rs3114020 in relation to NSCLC survival in the interaction analysis. Our findings show that ABCG2 rs3114020 might be one of the candidate biomarkers for NSCLC survival in this Chinese population, especially among patients with adenocarcinoma.
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Affiliation(s)
- J Sun
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - M Zhu
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - W Shen
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - C Wang
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - J Dai
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China
| | - L Xu
- Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Collaborative Innovation Center For Cancer Personalized Medicine, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, China
| | - G Jin
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, China
| | - Z Hu
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, China
| | - H Ma
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, China
| | - H Shen
- Department of Epidemiology and Biostatistics, Collaborative Innovation Center of Cancer Medicine, School of Public Health, Nanjing Medical University, Nanjing, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, China
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202
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Ji Q, Xu S, Sun F, Xu W, Jiao K, Shi B, Xie X, Wang Y, Zhu M. Simultaneous control of blood glucose, blood pressure, and lipid among drug-treated Type 2 diabetes patients from Shaanxi province, North-Western China: A multicenter study. Niger J Clin Pract 2016; 19:784-792. [DOI: 10.4103/1119-3077.181359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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203
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Zhou P, Huang Y, Guo Y, Wang L, Ling C, Guo Q, Wang Y, Zhu S, Fan X, Zhu M, Huang H, Lu Y, Wang Z. Decellularization and Recellularization of Rat Livers With Hepatocytes and Endothelial Progenitor Cells. Artif Organs 2015; 40:E25-38. [PMID: 26637111 DOI: 10.1111/aor.12645] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Pengcheng Zhou
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
- Department of Emergency Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Yan Huang
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Yibing Guo
- Surgical Comprehensive Laboratory; Affiliated Hospital of Nantong University; Nantong China
| | - Lei Wang
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Changchun Ling
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Qingsong Guo
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Yao Wang
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Shajun Zhu
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Xiangjun Fan
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Mingyan Zhu
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
| | - Hua Huang
- Department of Pathology; Affiliated Hospital of Nantong University; Nantong China
| | - Yuhua Lu
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
- Surgical Comprehensive Laboratory; Affiliated Hospital of Nantong University; Nantong China
| | - Zhiwei Wang
- Department of General Surgery; Affiliated Hospital of Nantong University; Nantong China
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204
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Jiang Z, Guo M, Shi C, Wang H, Yao L, Liu L, Xie C, Pu S, LaChaud G, Shen J, Zhu M, Mu L, Ge H, Long Y, Wang X, Song Y, Sun J, Hou X, Zarringhalam A, Park SH, Shi C, Shen H, Lin Z. Protection against cognitive impairment and modification of epileptogenesis with curcumin in a post-status epilepticus model of temporal lobe epilepsy. Neuroscience 2015; 310:362-71. [DOI: 10.1016/j.neuroscience.2015.09.058] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 09/20/2015] [Accepted: 09/21/2015] [Indexed: 12/12/2022]
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205
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Wang H, Hou Y, Guo J, Chen H, Liu X, Wu Z, Zhao S, Zhu M. Transcriptomic landscape for lymphocyte count variation in poly I:C-induced porcine peripheral blood. Anim Genet 2015; 47:49-61. [PMID: 26607402 DOI: 10.1111/age.12379] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/11/2015] [Indexed: 12/28/2022]
Abstract
Lymphocyte count is an important phenotypic metric that has been reported to be related to the individual antiviral capacity of pigs and other mammals. To date, aside from information regarding several genes and pathways, little is known about the mechanism by which gene expression affects variation in lymphocyte count. In this work, we investigated the lymphocyte count variation after poly I:C stimulation and compared the transcriptomes of pigs with large and small differences of lymphocyte counts before and after poly I:C stimulation. Pigs with large and small differences of lymphocyte counts were designated as extreme response (ER) and moderate response (MR) pigs respectively. Lymphocyte counts in all animals were observed to decline after poly I:C stimulation. Transcriptomic analysis identified 1121 transcripts (981 differentially expressed genes) in MR pigs and 1045 transcripts (904 differentially expressed genes) in ER pigs. We found that the majority of the differentially expressed genes were involved in both innate and adaptive immune responses. However, the innate immune response of ER pigs was more rapid than that of MR pigs. Results indicated that the activation of signaling pathways associated with cell death, cytotoxicity and apoptosis may contribute to the poly I:C-induced decrease of lymphocyte counts in the periphery. Moreover, the differential expression patterns of chemokines and FAS either totally or partially provided an interpretation for the different degrees of decrease in the lymphocyte counts between MR and ER pigs. Overall, our study will provide further understanding of the molecular basis for the antiviral capacity of pigs and other mammals.
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Affiliation(s)
- H Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,College of Informatics, Huazhong Agricultural University, Wuhan, 430070, China
| | - Y Hou
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - J Guo
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - H Chen
- Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan, 430023, China
| | - X Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Z Wu
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, China
| | - S Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, China
| | - M Zhu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.,The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, 430070, China
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206
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Zhu M, Yancy HF, Deaver C, Jones YL, Myers MJ. Loperamide-induced expression of immune and inflammatory genes in Collies associated with ivermectin sensitivity. J Vet Pharmacol Ther 2015; 39:131-7. [PMID: 26471945 DOI: 10.1111/jvp.12268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 08/11/2015] [Indexed: 12/16/2022]
Abstract
This study evaluated the impact of the ABCB1-1Δ mutation in Collies which exhibited toxicity toward ivermectin, on changes in gene expression when given the unrelated ABCB1 substrate loperamide, to identify potential biomarkers predictive of drug safety. Thirty-two healthy intact Collies consisting of dogs with either a wild-type, heterozygous mutant, or homozygous mutant genotype were used. Whole blood samples were collected from Collies at 0 or 5 h following administration of loperamide at a dose of 0.10 mg/kg. Whole-genome gene expression microarray was conducted to examine for changes in gene expression. Microarray analysis identified loperamide-induced changes in gene expression which were specifically associated with ivermectin-sensitive phenotypes in Collies possessing the ABCB1-1Δ mutation. Gene pathway analysis further demonstrated that the altered genes are involved in immunological disease, cell death and survival, and cellular development. Thirteen genes, including CCL8 and IL-8, were identified. Collie dogs harboring ABCB1-1Δ mutation which also exhibited toxicity toward ivermectin demonstrated systematic responses following loperamide treatment exhibited by altered expression of genes involved in immune and inflammatory signaling pathways. Genes such as CCL8 and IL-8 are potential biomarkers in whole blood that may predict the safety of loperamide in dogs with ABCB1-1∆ mutation associated with ivermectin sensitivity.
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Affiliation(s)
- M Zhu
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Laurel, MD, USA
| | - H F Yancy
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Laurel, MD, USA
| | - C Deaver
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Laurel, MD, USA
| | - Y L Jones
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Laurel, MD, USA
| | - M J Myers
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Laurel, MD, USA
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207
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Wang H, Zhang Q, Chai Y, Liu Y, Li F, Wang B, Zhu C, Cui J, Qu H, Zhu M. 1,25(OH)2D3 downregulates the Toll-like receptor 4-mediated inflammatory pathway and ameliorates liver injury in diabetic rats. J Endocrinol Invest 2015; 38:1083-91. [PMID: 25906757 PMCID: PMC4768236 DOI: 10.1007/s40618-015-0287-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Accepted: 04/03/2015] [Indexed: 01/10/2023]
Abstract
BACKGROUND Fatty acid deposition in the liver can activate a number of pro-inflammatory signaling pathways such as the Toll-like receptor 4 (TLR4) pathway, which may be important in the pathogenesis of nonalcoholic steatohepatitis. 1,25(OH)2D3 downregulates the expression of TLR4 and may represent a novel treatment strategy for reducing hepatocyte injury. Therefore, in this study, we investigated the protective effects of 1,25(OH)2D3 on diabetic liver injury in vivo. METHODS Streptozotocin (STZ)-induced diabetic rats were randomly divided into five groups and treated with low-dose 1,25(OH)2D3 (0.025 μg/kg/day), medium-dose 1,25(OH)2D3 (0.15 μg/kg/day), high-dose 1,25(OH)2D3 (0.3 μg/kg/day), insulin (protamine zinc insulin 16 U/kg/day, subcutaneous injection), or no intervention (the control group). Sixteen weeks later, the rats were killed, and blood samples were obtained to test lipid profiles and hepatic function. The infiltration of inflammatory cells, the level of fibrosis, and the expression levels of TLR4, nuclear factor-kappa B (NF-κB), and tumor necrosis factor-α (TNF-α) in the liver were analyzed. The hepatocytes were treated with vehicle control, LPS (100 ng), high fat [DMEM + FFA (0.1 mM: palmitic acid, oleic acid, 1:2)], LPS + high fat, vehicle + 1,25(OH)2D3 (10(-7) M), LPS + 1,25(OH)2D3, high fat + 1,25(OH)2D3, or LPS + high fat + 1,25(OH)2D3. RNA and protein were extracted to detect the expression of TLR4 and downstream inflammatory factors such as NF-ΚB, TNF-α, and IL-6. Groups of data were compared by single factor variance analysis. RESULTS High-dose 1,25(OH)2D3 administration for 16 weeks downregulated the expression of TLR4, NF-κB, and TNF-α in the liver tissue of diabetic rats and attenuated hepatic inflammation and fibrosis, as shown by immunohistochemical staining, hematoxylin and eosin staining, Masson's trichrome staining, reverse transcription polymerase chain reaction (RT-PCR), and western blotting. In vitro, hepatocytes treated with high fat or LPS exhibited significantly increased expression of TLR4, NF-κB, and downstream inflammatory factors (P < 0.05). Intervention with 1,25(OH)2D3 decreased the expression of TLR4, NF-κB, and inflammatory factors (P < 0.05). CONCLUSIONS 1,25(OH)2D3 exhibited protective effects against diabetes-related liver injury, possibly through downregulation of components of the TLR4 signaling pathway.
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Affiliation(s)
- H Wang
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Q Zhang
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Y Chai
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Y Liu
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - F Li
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - B Wang
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - C Zhu
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - J Cui
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - H Qu
- Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX, 77030, USA
| | - M Zhu
- Department of Endocrinology, Tianjin Medical University General Hospital, Tianjin, 300052, China.
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208
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Xu Y, Hijazi Y, Wolf A, Wu B, Sun YN, Zhu M. Physiologically Based Pharmacokinetic Model to Assess the Influence of Blinatumomab-Mediated Cytokine Elevations on Cytochrome P450 Enzyme Activity. CPT Pharmacometrics Syst Pharmacol 2015; 4:507-15. [PMID: 26451330 PMCID: PMC4592530 DOI: 10.1002/psp4.12003] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 05/22/2015] [Indexed: 01/22/2023] Open
Abstract
Blinatumomab is a CD19/CD3 bispecific T-cell engager (BiTE®) antibody construct for treatment of leukemia. Transient elevation of cytokines (interleukin (IL)-6, IL-10, interferon-gamma (IFN-γ)) has been observed within the first 48 hours of continuous intravenous blinatumomab infusion. In human hepatocytes, blinatumomab showed no effect on cytochrome P450 (CYP450) activities, whereas a cytokine cocktail showed suppression of CYP3A4, CYP1A2, and CYP2C9 activities. We developed a physiologically based pharmacokinetic (PBPK) model to evaluate the effect of transient elevation of cytokines, particularly IL-6, on CYP450 suppression. The predicted suppression of hepatic CYP450 activities was <30%, and IL-6-mediated changes in exposure to sensitive substrates of CYP3A4, CYP1A2, and CYP2C9 were
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Affiliation(s)
- Y Xu
- Amgen, Clinical Pharmacology, Modeling and Simulation Group, Department of Medical SciencesThousand Oaks, California, USA
| | - Y Hijazi
- Amgen Research (Munich)Munich, Germany
| | - A Wolf
- Amgen Research (Munich)Munich, Germany
| | - B Wu
- Amgen, Clinical Pharmacology, Modeling and Simulation Group, Department of Medical SciencesThousand Oaks, California, USA
| | - Y-N Sun
- Amgen, Clinical Pharmacology, Modeling and Simulation Group, Department of Medical SciencesThousand Oaks, California, USA
| | - M Zhu
- Amgen, Clinical Pharmacology, Modeling and Simulation Group, Department of Medical SciencesThousand Oaks, California, USA
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209
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Middleton MR, Friedlander P, Hamid O, Daud A, Plummer R, Falotico N, Chyla B, Jiang F, McKeegan E, Mostafa NM, Zhu M, Qian J, McKee M, Luo Y, Giranda VL, McArthur GA. Randomized phase II study evaluating veliparib (ABT-888) with temozolomide in patients with metastatic melanoma. Ann Oncol 2015. [PMID: 26202595 DOI: 10.1093/annonc/mdv308] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Veliparib (ABT-888) is a potent, orally bioavailable, small-molecule inhibitor of the DNA repair enzymes poly ADP-ribose polymerase-1 and -2. Veliparib enhances the efficacy of temozolomide (TMZ) and other cytotoxic agents in preclinical tumor models. PATIENTS AND METHODS In this multicenter, double-blind trial, adults with unresectable stage III or IV metastatic melanoma were randomized 1:1:1 to TMZ plus veliparib 20 or 40 mg, or placebo twice daily. Efficacy end points included progression-free survival (PFS), overall survival (OS), and objective response rate (ORR). RESULTS Patients (N = 346) were randomized between February 2009 and January 2010. Median [95% confidence interval (CI)] PFS was 3.7 (3.0-5.5), 3.6 (1.9-4.1), and 2 (1.9-3.7) months in the 20-mg, 40-mg, and placebo arms, respectively. Median (95% CI) OS was 10.8 (9.0-13.1), 13.6 (11.4-15.9), and 12.9 (9.8-14.3) months, respectively; ORR was 10.3%, 8.7%, and 7.0%. Exploratory analyses showed patients with low ERCC1 expression had longer PFS when TMZ was combined with veliparib. Toxicities were as expected for TMZ. The frequencies of thrombocytopenia, neutropenia, and leukopenia were significantly increased in the veliparib groups. Grade 3 or 4 adverse events, mainly hematologic toxicities, were seen in 55%, 63%, and 41% of patients in the 20-mg, 40-mg, and placebo arms, respectively. CONCLUSIONS Median PFS with 20 and 40 mg veliparib almost doubled numerically compared with placebo, but the improvements did not reach statistical significance. OS was not increased with veliparib. Toxicities were similar to TMZ monotherapy, but with increased frequency.
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Affiliation(s)
- M R Middleton
- Department of Oncology, University of Oxford, Churchill Hospital, Oxford, UK
| | - P Friedlander
- Hematology and Medical Oncology, The Mount Sinai Medical Center, New York
| | - O Hamid
- Experimental Therapeutics/Immunotherapy, The Los Angeles Clinic and Research Institute, Los Angeles
| | - A Daud
- University of California San Francisco Medical Center, University of California, San Francisco, USA
| | - R Plummer
- Northern Institute for Cancer Research, Newcastle University, Newcastle upon Tyne, UK
| | | | - B Chyla
- AbbVie Inc., North Chicago, USA
| | - F Jiang
- AbbVie Inc., North Chicago, USA
| | | | | | - M Zhu
- AbbVie Inc., North Chicago, USA
| | - J Qian
- AbbVie Inc., North Chicago, USA
| | - M McKee
- AbbVie Inc., North Chicago, USA
| | - Y Luo
- AbbVie Inc., North Chicago, USA
| | | | - G A McArthur
- Divisions of Cancer Medicine/Cancer Research, Peter MacCallum Cancer Centre, Melbourne, Australia
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210
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Wang X, Jia X, Zhu M, Chen J. Linking health states to subjective well-being: an empirical study of 5854 rural residents in China. Public Health 2015; 129:655-66. [DOI: 10.1016/j.puhe.2015.03.014] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 03/09/2015] [Accepted: 03/16/2015] [Indexed: 10/23/2022]
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211
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Yuan X, Huang Y, Guo Y, Wang L, Guo Q, Xu T, Wu D, Zhou P, Zhu S, Wang Y, Fan X, Zhu M, Lu Y, Wang Z. Controlling the blood glucose of type 1 diabetes mice by co-culturing MIN-6 β cells on 3D scaffold. Pediatr Transplant 2015; 19:371-9. [PMID: 25677260 DOI: 10.1111/petr.12443] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/16/2015] [Indexed: 01/26/2023]
Abstract
T1D is an autoimmune disease, which may be caused by lack of insulin-secreting β cells due to damage of autoimmune system. Living with T1D is a challenge for the child and the family; cell transplantation is a treatment option for diabetes in children. To establish a microenvironment suitable for cell growth and proliferation as well as for sustained cellular function, we used MIN-6 β cells as seed cells and SF-IV collagen as a 3D composite scaffold to construct artificial pancreas in this experiment. The cell viabilities were determined by MTT assay, and the response of cells to different glucose concentrations was observed by glucose stimulation test. Artificial pancreas was transplanted into the abdominal cavity of T1D mice, and the changes of blood glucose were monitored. After 10 days, insulin expression was detected by immunohistochemical method, and the claybank stained area showed effectiveness of insulin secretion. A series of experiments showed that implantation of 3D cell scaffold into the abdominal cavity can effectively control the blood glucose level of T1D mice. It also had longer-lasting hypoglycemic effects than simple cell transplantation, which was expected to become a new method for the treatment of T1D.
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Affiliation(s)
- Xiaoqi Yuan
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China; Department of General Surgery, Tenth People's Hospital of Tongji University, Shanghai, China
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Zhang Y, Doshi S, Zhu M. Pharmacokinetics and pharmacodynamics of rilotumumab: a decade of experience in preclinical and clinical cancer research. Br J Clin Pharmacol 2015; 80:957-64. [PMID: 25912961 DOI: 10.1111/bcp.12663] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 04/06/2015] [Accepted: 04/20/2015] [Indexed: 12/11/2022] Open
Abstract
Rilotumumab is a fully human monoclonal antibody against hepatocyte growth factor, the only known ligand of the MET receptor. Over the last decade, rilotumumab has been extensively tested in preclinical studies and in clinical studies in a variety of cancer types. In this review, we examine the pharmacokinetic and pharmacodynamic data that have been collected in the rilotumumab programme to date, and discuss retrospectively how the knowledge acquired in this programme can be applied to a number of key issues in oncology drug development, including: (i) using preclinical data to inform first-in-human study design; (ii) the role of biomarkers in the identification of a target patient population; (iii) the potential for drug interactions between therapeutic proteins and other anticancer agents; and (iv) pharmacokinetic and pharmacodynamic considerations in phase 3 study design.
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Affiliation(s)
- Y Zhang
- Department of Clinical Pharmacology, Modeling, and Simulation, Amgen Inc, One Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - S Doshi
- Department of Clinical Pharmacology, Modeling, and Simulation, Amgen Inc, One Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - M Zhu
- Department of Clinical Pharmacology, Modeling, and Simulation, Amgen Inc, One Amgen Center Drive, Thousand Oaks, CA, 91320, USA
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213
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Xu T, Zhu M, Guo Y, Wu D, Huang Y, Fan X, Zhu S, Lin C, Li X, Lu J, Zhu H, Zhou P, Lu Y, Wang Z. Three-dimensional culture of mouse pancreatic islet on a liver-derived perfusion-decellularized bioscaffold for potential clinical application. J Biomater Appl 2015; 30:379-87. [PMID: 26006767 DOI: 10.1177/0885328215587610] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The cutting-edge technology of three-dimensional liver decellularized bioscaffold has a potential to provide a microenvironment that is suitable for the resident cells and even develop a new functional organ. Liver decellularized bioscaffold preserved the native extracellular matrix and three-dimensional architecture in support of the cell culture. The goal of this study was to discover if three-dimensional extracellular matrix derived from mouse liver could facilitate the growth and maintenance of physiological functions of mouse isolated islets. We generated a whole organ liver decellularized bioscaffold which could successfully preserve extracellular matrix proteins and the native vascular channels using 1% Triton X-100/0.1% ammonium protocol. To evaluate the potential of decellularized liver as a scaffold for islets transplantation, the liver decellularized bioscaffold was infused with mouse primary pancreatic islets which were obtained through Collagenase P digestion protocol. Its yield, morphology, and quality were estimated by microscopic analysis, dithizone staining, insulin immunofluorescence and glucose stimulation experiments. Comparing the three-dimensional culture in liver decellularized bioscaffold with the orthodoxy two-dimensional plate culture, hematoxylin-eosin staining, immunohistochemistry, and insulin gene expression were tested. Our results demonstrated that the liver decellularized bioscaffold could support cellular culture and maintenance of cell functions. In contrast with the conventional two-dimensional culture, three-dimensional culture system could give rise to an up-regulated insulin gene expression. These findings demonstrated that the liver bioscaffold by a perfusion-decellularized technique could serve as a platform to support the survival and function of the pancreatic islets in vitro. Meanwhile three-dimensional culture system had a superior role in contrast with the two-dimensional culture. This study advanced the field of regenerative medicine towards the development of a liver decellularized bioscaffold capable of forming a neo-organ and could be used as potential clinical application.
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Affiliation(s)
- Tianxin Xu
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Mingyan Zhu
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Yibing Guo
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Di Wu
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Yan Huang
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Xiangjun Fan
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Shajun Zhu
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Changchun Lin
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Xiaohong Li
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Jingjing Lu
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Hui Zhu
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Pengcheng Zhou
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Yuhua Lu
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
| | - Zhiwei Wang
- Department of General Surgery, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
- Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Jiangsu, People's Republic of China
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de Jonge M, van Herpen C, Gietema J, Timms K, Dunbar M, Hetman R, Serpenti C, Xiong H, Zhu M, Mittapalli R, Ansell P, Shepherd S. Analysis of Biomarkers and PK Modeling of ABT-767 in Patients With BRCA1/BRCA2-Mutated Tumors or High Grade Serous Ovarian Cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv090.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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215
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Kan X, Jing Y, Wan QY, Pan JC, Han M, Yang Y, Zhu M, Wang Q, Liu KH. Sorafenib combined with percutaneous radiofrequency ablation for the treatment of medium-sized hepatocellular carcinoma. Eur Rev Med Pharmacol Sci 2015; 19:247-255. [PMID: 25683938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Sorafenib, an oral multikinase inhibitor, is the proved therapy method for patients with advanced hepatocellular carcinoma (HCC). Based on heat delivery, Radiofrequency ablation (RFA) has been found to achieve complete neoplasm necrosis. It is the most widely performed percutaneous therapy for HCC. However, Study associated combined Sorafenib with RFA therapy for patients with advanced HCC has never been reported. The aim of present study is to explore the efficacy and safety of sorafenib combined with RFA therapy for the patients with medium-sized HCC. PATIENTS AND METHODS A total of 62 patients diagnosed as HCC were involved in this study. All patients were randomly assigned to sorafenib and RFA (n=30) or RFA-alone (n=32) treatment groups. Treatment outcomes, including recurrence rates, time to progression (TTP) and adverse reactions induced by sorafenib were observed and recorded to assess the efficacy and safety of the combination method. RESULTS During the overall follow-up period, the recurrence rate of the combination subgroup was 56.7% (17/30), and that of the RFA-alone subgroup was 87.5% (28/32) (p < 0.01). The median TTP was 17.0 months in the combination therapy vs. 6.1 months in the RFA-alone (p < 0.05). Hand-foot skin reactions were reported by 83.3% (25/30) of patients and 46.7% (14/30) reported diarrhea while the most adverse events (AEs) were mild to moderate in the combination subgroup. CONCLUSIONS Sorafenib combined with RFA significantly decreased recurrence rates and prolonged the survival time of medium-sized HCC patients. The combination therapy is safer and more effective than the control without unexpected side effects. Furthermore, the earlier application, the better results were.
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Affiliation(s)
- X Kan
- Department of Interventional Therapy Center, Ji'nan Infectious Disease Hospital, Ji'nan, China.
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216
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Li Q, Wang Y, Xie J, Sun W, Zhu M, He L, Wang Q. Characterization and expression of DDX6 during gametogenesis in the Chinese mitten crab Eriocheir sinensis. Genet Mol Res 2015; 14:4420-37. [DOI: 10.4238/2015.april.30.15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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217
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Qu H, Zhu M, Tao Y, Zhao Y. Suppression of peripheral myelin protein 22 (PMP22) expression by miR29 inhibits the progression of lung cancer. Neoplasma 2015; 62:881-6. [PMID: 26458320 DOI: 10.4149/neo_2015_107] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
PMP22 is recently recognized as a key player in a variety of prevalent cancers. In this study, we sought to explore the correlation of peripheral myelin protein 22 (PMP22) expression with cell proliferation, invasion and apoptosis in lung cancer cell line. miR29 was transfected into Anip973 lung adenocarcinoma cell line to interfere the expression of PMP22 using Lipofectamine ® 2000 reagent. Real-time polymerase chain reaction (RT-PCR) and Western blot were performed to determine the expression level of PMP22 at mRNA and protein level. Then MTT, Matrigel transwell assay and flow cytometry were respectively used to explore the proliferation, invasion and apoptosis in Anip973 lung adenocarcinoma cell line in vitro. miR29 could significantly down-regulate the expression level of PMP22 in Anip973 cells not only at mRNA level but also at protein level. Moreover, the proliferation rate, invasive cell number and apoptosis rate of Anip973 cells in miR29 transfected group significantly decreased compared with blank group, while no significant difference existed between control group and blank group. Our study found that suppression of PMP22 expression could inhibit cell proliferation, invasion and apoptosis in lung cancer cells. All these findings suggest that PMP22 may be involved in progression of lung cancer and could be a new therapeutic target for this disease.
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218
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Chang C, Verboncoeur J, Guo MN, Zhu M, Song W, Li S, Chen CH, Bai XC, Xie JL. Ultrafast high-power microwave window breakdown: nonlinear and postpulse effects. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 90:063107. [PMID: 25615205 DOI: 10.1103/physreve.90.063107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Indexed: 06/04/2023]
Abstract
The time- and space-dependent optical emissions of nanosecond high-power microwave discharges near a dielectric-air interface have been observed by nanosecond-response four-framing intensified-charged-coupled device cameras. The experimental observations indicate that plasma developed more intensely at the dielectric-air interface than at the free-space region with a higher electric-field amplitude. A thin layer of intense light emission above the dielectric was observed after the microwave pulse. The mechanisms of the breakdown phenomena are analyzed by a three-dimensional electromagnetic-field modeling and a two-dimensional electromagnetic particle-in-cell simulation, revealing the formation of a space-charge microwave sheath near the dielectric surface, accelerated by the normal components of the microwave field, significantly enhancing the local-field amplitude and hence ionization near the dielectric surface. The nonlinear positive feedback of ionization, higher electron mobility, and ultraviolet-driven photoemission due to the elevated electron temperature are crucial for achieving the ultrafast discharge. Following the high-power microwave pulse, the sheath sustains a glow discharge until the sheath collapses.
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Affiliation(s)
- C Chang
- Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China and Key Laboratory of Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China and Department of Engineering Physics, Tsinghua University, Beijing 100084, China
| | - J Verboncoeur
- Department of Electrical and Computer Engineering, Michigan State University, East Lansing, Michigan 48824, USA
| | - M N Guo
- Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China
| | - M Zhu
- Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China
| | - W Song
- Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China
| | - S Li
- Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China
| | - C H Chen
- Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China
| | - X C Bai
- Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China
| | - J L Xie
- Laboratory on Science and Technology of High Power Microwave, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, China
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Li RY, Wang AP, Xu JH, Xi LY, Fu MH, Zhu M, Xu ML, Li XQ, Lai W, Liu WD, Lu XY, Gong ZQ. Efficacy and safety of 1 % terbinafine film-forming solution in Chinese patients with tinea pedis: a randomized, double-blind, placebo-controlled, multicenter, parallel-group study. Clin Drug Investig 2014; 34:223-30. [PMID: 24477462 PMCID: PMC3926983 DOI: 10.1007/s40261-014-0171-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Background and objectives Superficial fungal skin infections are treated using topical antifungals. The aim of this study was to demonstrate the efficacy of a single application of 1 % terbinafine film-forming solution (FFS) versus placebo for the treatment of tinea pedis in the Chinese population. Methods Six centers in China randomized 290 patients in a 1:1 ratio to receive either 1 % terbinafine FFS or FFS vehicle (placebo) once on the affected foot/feet. Efficacy assessments included microscopy and mycologic culture, and assessing clinical signs and symptoms at baseline, and at weeks 1 and 6 after the topical treatment. All adverse events were recorded. Results At week 6, 1 % terbinafine FFS was superior to placebo for effective treatment rate (63 vs. 8 %); clinical cure (30 vs. 6 %); mycological cure (86 vs. 12 %); negative microscopy (90 vs. 24 %); and negative mycological culture (90 vs. 27 %): all p ≤ 0.001 and clinically relevant. At week 6, 1 % terbinafine FFS was clinically superior to placebo for the absence of: erythema (69 vs. 29 %); desquamation (33 vs. 8 %); and pruritus (70 vs. 30 %): all p ≤ 0.001 and clinically relevant. At week 6, differences in the average total signs and symptoms scores were significantly lower for 1 % terbinafine FFS versus placebo (p ≤ 0.001). Both 1 % terbinafine FFS and placebo were safe and well tolerated based on adverse events and investigator and patient assessments. Conclusions This double-blind, randomized, multicenter study demonstrated one single topical application of 1 % terbinafine FFS was safe and effective in the treatment of tinea pedis in the Chinese population.
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Affiliation(s)
- Ruo Yu Li
- Dermatology Department, Peking University First Hospital, 8# Xishiku Street, Xicheng District, Beijing, 100034, China,
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Zhao H, Peters JH, Zhu M, Page SJ, Ritter RC, Appleyard SM. Frequency-dependent facilitation of synaptic throughput via postsynaptic NMDA receptors in the nucleus of the solitary tract. J Physiol 2014; 593:111-25. [PMID: 25281729 DOI: 10.1113/jphysiol.2013.258103] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 09/15/2014] [Indexed: 12/28/2022] Open
Abstract
Hindbrain NMDA receptors play important roles in reflexive and behavioural responses to vagal activation. NMDA receptors have also been shown to contribute to the synaptic responses of neurons in the nucleus of the solitary tract (NTS), but their exact role remains unclear. In this study we used whole cell patch-clamping techniques in rat horizontal brain slice to investigate the role of NMDA receptors in the fidelity of transmission across solitary tract afferent-NTS neuron synapses. Results show that NMDA receptors contribute up to 70% of the charge transferred across the synapse at high (>5 Hz) firing rates, but have little contribution at lower firing frequencies. Results also show that NMDA receptors critically contribute to the fidelity of transmission across these synapses during high frequency (>5 Hz) afferent discharge rates. This novel role of NMDA receptors may explain in part how primary visceral afferents, including vagal afferents, can maintain fidelity of transmission across a broad range of firing frequencies. Neurons within the nucleus of the solitary tract (NTS) receive vagal afferent innervations that initiate gastrointestinal and cardiovascular reflexes. Glutamate is the fast excitatory neurotransmitter released in the NTS by vagal afferents, which arrive there via the solitary tract (ST). ST stimulation elicits excitatory postsynaptic currents (EPSCs) in NTS neurons mediated by both AMPA- and NMDA-type glutamate receptors (-Rs). Vagal afferents exhibit a high probability of vesicle release and exhibit robust frequency-dependent depression due to presynaptic vesicle depletion. Nonetheless, synaptic throughput is maintained even at high frequencies of afferent activation. Here we test the hypothesis that postsynaptic NMDA-Rs are essential in maintaining throughput across ST-NTS synapses. Using patch clamp electrophysiology in horizontal brainstem slices, we found that NMDA-Rs, including NR2B subtypes, carry up to 70% of the charge transferred across the synapse during high frequency stimulations (>5 Hz). In contrast, their relative contribution to the ST-EPSC is much less during low (<2 Hz) frequency stimulations. Afferent-driven activation of NMDA-Rs produces a sustained depolarization during high, but not low, frequencies of stimulation as a result of relatively slow decay kinetics. Hence, NMDA-Rs are critical for maintaining action potential generation at high firing rates. These results demonstrate a novel role for NMDA-Rs enabling a high probability of release synapse to maintain the fidelity of synaptic transmission during high frequency firing when glutamate release and AMPA-R responses are reduced. They also suggest why NMDA-Rs are critical for responses that may depend on high rates of afferent discharge.
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Affiliation(s)
- Huan Zhao
- Program in Neuroscience, Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, WA, 99164, USA
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221
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Benoist CC, Kawas LH, Zhu M, Tyson KA, Stillmaker L, Appleyard SM, Wright JW, Wayman GA, Harding JW. The procognitive and synaptogenic effects of angiotensin IV-derived peptides are dependent on activation of the hepatocyte growth factor/c-met system. J Pharmacol Exp Ther 2014; 351:390-402. [PMID: 25187433 DOI: 10.1124/jpet.114.218735] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A subset of angiotensin IV (AngIV)-related molecules are known to possess procognitive/antidementia properties and have been considered as templates for potential therapeutics. However, this potential has not been realized because of two factors: 1) a lack of blood-brain barrier-penetrant analogs, and 2) the absence of a validated mechanism of action. The pharmacokinetic barrier has recently been overcome with the synthesis of the orally active, blood-brain barrier-permeable analog N-hexanoic-tyrosine-isoleucine-(6) aminohexanoic amide (dihexa). Therefore, the goal of this study was to elucidate the mechanism that underlies dihexa's procognitive activity. Here, we demonstrate that dihexa binds with high affinity to hepatocyte growth factor (HGF) and both dihexa and its parent compound Norleucine 1-AngIV (Nle(1)-AngIV) induce c-Met phosphorylation in the presence of subthreshold concentrations of HGF and augment HGF-dependent cell scattering. Further, dihexa and Nle(1)-AngIV induce hippocampal spinogenesis and synaptogenesis similar to HGF itself. These actions were inhibited by an HGF antagonist and a short hairpin RNA directed at c-Met. Most importantly, the procognitive/antidementia capacity of orally delivered dihexa was blocked by an HGF antagonist delivered intracerebroventricularly as measured using the Morris water maze task of spatial learning.
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Affiliation(s)
- Caroline C Benoist
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
| | - Leen H Kawas
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
| | - Mingyan Zhu
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
| | - Katherine A Tyson
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
| | - Lori Stillmaker
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
| | - Suzanne M Appleyard
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
| | - John W Wright
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
| | - Gary A Wayman
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
| | - Joseph W Harding
- Department of Integrative Physiology and Neuroscience (C.C.B., L.H.K., M.Z., K.A.T., L.S., S.M.A., J.W.W., G.A.W., J.W.H.) and Department of Psychology (J.W.W., J.W.H.), Washington State University, Pullman, Washington; and M Biotechnology, Inc., Seattle, Washington (L.H.K., J.W.W., J.W.H.)
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de Jonge M, van Herpen C, Gietema J, Shepherd S, Koornstra R, Jager A, De Hollander MN, Dunbar M, Hetman R, Serpenti C, Xiong H, Zhu M, Giranda V. A Study of Abt-767 in Advanced Solid Tumors with Brca 1 and Brca 2 Mutations and High Grade Serous Ovarian, Fallopian Tube, or Primary Peritoneal Cancer. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu331.12] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Guimond D, Diabira D, Porcher C, Bader F, Ferrand N, Zhu M, Appleyard SM, Wayman GA, Gaiarsa JL. Leptin potentiates GABAergic synaptic transmission in the developing rodent hippocampus. Front Cell Neurosci 2014; 8:235. [PMID: 25177272 PMCID: PMC4133691 DOI: 10.3389/fncel.2014.00235] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 07/26/2014] [Indexed: 12/17/2022] Open
Abstract
It is becoming increasingly clear that leptin is not only a hormone regulating energy homeostasis but also a neurotrophic factor impacting a number of brain regions, including the hippocampus. Although leptin promotes the development of GABAergic transmission in the hypothalamus, little is known about its action on the GABAergic system in the hippocampus. Here we show that leptin modulates GABAergic transmission onto developing CA3 pyramidal cells of newborn rats. Specifically, leptin induces a long-lasting potentiation (LLP-GABAA) of miniature GABAA receptor-mediated postsynaptic current (GABAA-PSC) frequency. Leptin also increases the amplitude of evoked GABAA-PSCs in a subset of neurons along with a decrease in the coefficient of variation and no change in the paired-pulse ratio, pointing to an increased recruitment of functional synapses. Adding pharmacological blockers to the recording pipette showed that the leptin-induced LLP-GABAA requires postsynaptic calcium released from internal stores, as well as postsynaptic MAPK/ERK kinases 1 and/or 2 (MEK1/2), phosphoinositide 3 kinase (PI3K) and calcium-calmodulin kinase kinase (CaMKK). Finally, study of CA3 pyramidal cells in leptin-deficient ob/ob mice revealed a reduction in the basal frequency of miniature GABAA-PSCs compared to wild type littermates. In addition, presynaptic GAD65 immunostaining was reduced in the CA3 stratum pyramidale of mutant animals, both results converging to suggest a decreased number of functional GABAergic synapses in ob/ob mice. Overall, these results show that leptin potentiates and promotes the development of GABAergic synaptic transmission in the developing hippocampus likely via an increase in the number of functional synapses, and provide insights into the intracellular pathways mediating this effect. This study further extends the scope of leptin's neurotrophic action to a key regulator of hippocampal development and function, namely GABAergic transmission.
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Affiliation(s)
- Damien Guimond
- Parc Scientifique de Luminy, Aix-Marseille Université Marseille, France ; Unité 901, Institut National de la Santé et de la Recherche Médicale Marseille, France ; Institut de Neurobiologie de la Méditerranée Marseille, France ; Program in Neuroscience, Department of Integrative Physiology and Neuroscience, Washington State University Pullman, WA, USA
| | - Diabe Diabira
- Parc Scientifique de Luminy, Aix-Marseille Université Marseille, France ; Unité 901, Institut National de la Santé et de la Recherche Médicale Marseille, France ; Institut de Neurobiologie de la Méditerranée Marseille, France
| | - Christophe Porcher
- Parc Scientifique de Luminy, Aix-Marseille Université Marseille, France ; Unité 901, Institut National de la Santé et de la Recherche Médicale Marseille, France ; Institut de Neurobiologie de la Méditerranée Marseille, France
| | - Francesca Bader
- Parc Scientifique de Luminy, Aix-Marseille Université Marseille, France ; Unité 901, Institut National de la Santé et de la Recherche Médicale Marseille, France ; Institut de Neurobiologie de la Méditerranée Marseille, France
| | - Nadine Ferrand
- Parc Scientifique de Luminy, Aix-Marseille Université Marseille, France ; Unité 901, Institut National de la Santé et de la Recherche Médicale Marseille, France ; Institut de Neurobiologie de la Méditerranée Marseille, France
| | - Mingyan Zhu
- Program in Neuroscience, Department of Integrative Physiology and Neuroscience, Washington State University Pullman, WA, USA
| | - Suzanne M Appleyard
- Program in Neuroscience, Department of Integrative Physiology and Neuroscience, Washington State University Pullman, WA, USA
| | - Gary A Wayman
- Program in Neuroscience, Department of Integrative Physiology and Neuroscience, Washington State University Pullman, WA, USA
| | - Jean-Luc Gaiarsa
- Parc Scientifique de Luminy, Aix-Marseille Université Marseille, France ; Unité 901, Institut National de la Santé et de la Recherche Médicale Marseille, France ; Institut de Neurobiologie de la Méditerranée Marseille, France
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Zhu M, Do D, Dela Cruz CR, Dun Z, Zhou HD, Mahanti SD, Ke X. Tuning the magnetic exchange via a control of orbital hybridization in Cr(2)(Te(1-x)W(x))O(6). Phys Rev Lett 2014; 113:076406. [PMID: 25170719 DOI: 10.1103/physrevlett.113.076406] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Indexed: 06/03/2023]
Abstract
We report the complex magnetic phase diagram and electronic structure of Cr_{2}(Te_{1-x}W_{x})O_{6} systems. While compounds with different x values possess the same crystal structure, they display different magnetic structures below and above x_{c}=0.7, where both the transition temperature T_{N} and sublattice magnetization (M_{s}) reach a minimum. Unlike many known cases where magnetic interactions are controlled either by injection of charge carriers or by structural distortion induced via chemical doping, in the present case it is achieved by tuning the orbital hybridization between Cr 3d and O 2p orbitals through W 5d states. The result is supported by ab initio electronic structure calculations. Through this concept, we introduce a new approach to tune magnetic and electronic properties via chemical doping.
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Affiliation(s)
- M Zhu
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - D Do
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - C R Dela Cruz
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Z Dun
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - H D Zhou
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306, USA
| | - S D Mahanti
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - X Ke
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
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226
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Zhu M, Jin XW, Wu BY, Nie JL, Li YH. Effects of simulated weightlessness on cellular morphology and biological characteristics of cell lines SGC-7901 and HFE-145. Genet Mol Res 2014; 13:6060-9. [PMID: 25117363 DOI: 10.4238/2014.august.7.20] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We investigated the effects of simulated weightlessness on cellular morphology, proliferation, cell cycle, and apoptosis of the human gastric carcinoma cell line SGC-7901 and the human gastric normal cell line HFE-145. A rotating clinostat was used to simulate weightlessness. The Image-Pro4.5 image analysis system was used for morphometric analysis. Proliferating cell nuclear antigen expression was examined by immunohistochemical staining. Changes in the cell cycle were examined using a cytometer. Apoptosis was measured using the terminal dUTP nick-end labeling (TUNEL) method. When subjected to simulated weightlessness, the cellular morphology of SGC-7901 cells was changed at 12, 24, 48, and 72 h, cell conversion from the G1 to S phase was blocked, proliferation was inhibited at 48 and 72 h, and the apoptosis index was increased at 72 h. The same changes were observed for HFE-145 cells at 12 h when subjected to simulated weightlessness, but no significant changes were found afterward compared with controls. SGC-7901 cells change their cellular morphology and biological characteristics during clinostat-simulated weightlessness at 72 h, but HFE-145 cells only change at 12 h and adapt to simulated weightlessness after that point.
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Affiliation(s)
- M Zhu
- Department of Gastroenterology, Air Force General Hospital of PLA, Beijing, China
| | - X W Jin
- Department of Gastroenterology, Air Force General Hospital of PLA, Beijing, China
| | - B Y Wu
- Department of Gastroenterology, South Building, Chinese PLA General Hospital, Beijing, China
| | - J L Nie
- The 13th Laboratory of Institute of Space Medico-Engineering, Beijing, China
| | - Y H Li
- The 13th Laboratory of Institute of Space Medico-Engineering, Beijing, China
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227
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Hu B, Xiong Y, Ni R, Wei L, Jiang D, Wang G, Wu D, Xu T, Zhao F, Zhu M, Wan C. The downregulation of ErbB3 binding protein 1 (EBP1) is associated with poor prognosis and enhanced cell proliferation in hepatocellular carcinoma. Mol Cell Biochem 2014; 396:175-85. [PMID: 25081333 DOI: 10.1007/s11010-014-2153-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 07/11/2014] [Indexed: 02/06/2023]
Abstract
ErbB3 binding protein 1 (EBP1) has been recently reported to function as a tumor suppressor in the progression of multiple cancers, including breast cancer, prostate cancer, salivary adenoid cystic carcinoma (ACC), and oral squamous cell carcinoma (OSCC). However, the expression and physiological significance of EBP1 in hepatocellular carcinoma (HCC) remain unclear. In the study, we showed that EBP1 was significantly downregulated in clinical HCC specimens, and that decreased expression of EBP1 was associated with enhanced proliferation in HCC cells. Western blot and immunohistochemical analyses revealed that EBP1 was remarkably downregulated in HCC tissues compared with the adjacent normal ones. The levels of EBP1 were significantly associated with histological grade (P = 0.034), tumor size (P = 0.001), and Ki67 expression (P < 0.001) in HCC specimens. Univariate and multivariate analyses showed that EBP1 could serve as an independent prognostic indicator of patients' survival. Serum starvation and refeeding assay indicated that EBP1 was accumulated in growth-arrested HCC cells, and was progressively decreased when cells entered into S phase. Moreover, the depletion of EBP1 induced growth acceleration and cell cycle progression in L02 hepatocytes. On the basis of these findings, we conclude that EBP1 may be a valuable prognostic marker and promising therapeutic target of HCC.
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Affiliation(s)
- Baoying Hu
- Basic Medical Research Centre, Medical College, Nantong University, Nantong, 226001, China
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228
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Ho JM, Anekonda VT, Thompson BW, Zhu M, Curry RW, Hwang BH, Morton GJ, Schwartz MW, Baskin DG, Appleyard SM, Blevins JE. Hindbrain oxytocin receptors contribute to the effects of circulating oxytocin on food intake in male rats. Endocrinology 2014; 155:2845-57. [PMID: 24877632 PMCID: PMC4098005 DOI: 10.1210/en.2014-1148] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Oxytocin (OT)-elicited hypophagia has been linked to neural activity in the nucleus of the solitary tract (NTS). Because plasma OT levels increase after a meal, we hypothesized that circulating OT acts at both peripheral and hindbrain OT receptors (OTRs) to limit food intake. To initially determine whether circulating OT inhibits food intake by acting at hindbrain OTRs, we pretreated rats with an OTR antagonist administered into the fourth ventricle (4V) followed by either central or systemic OT administration. Administration of the OTR antagonist into the 4V blocked anorexia induced by either 4V or i.p. injection of OT. However, blockade of peripheral OTRs also weakened the anorectic response to ip OT. Our data suggest a predominant role for hindbrain OTRs in the hypophagic response to peripheral OT administration. To elucidate central mechanisms of OT hypophagia, we tested whether OT activates NTS catecholaminergic neurons. OT (ip) increased the number of NTS cells expressing c-Fos, of which 10%-15% were catecholaminergic. Furthermore, electrophysiological studies in mice revealed that OT stimulated 47% (8 of 17) of NTS catecholamine neurons through a presynaptic mechanism. However, OT-elicited hypophagia did not appear to require activation of α1-adrenoceptors, and blockade of glucagon-like peptide-1 receptors similarly did not attenuate anorexia induced by OT. These findings demonstrate that OT elicits satiety through both central and peripheral OTRs and that although catecholamine neurons are a downstream target of OT signaling in the NTS, the hypophagic effect is mediated independently of α1-adrenoceptor signaling.
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Affiliation(s)
- Jacqueline M Ho
- Research and Development Service (J.M.H., V.T.A., B.W.T., R.W.C., B.H.H., D.G.B., J.E.B.), Veterans Affairs Puget Sound Health Care System, Seattle, Washington 98108; Department of Medicine (J.M.H., G.J.M., M.W.S., D.G.B., J.E.B.), Division of Metabolism, Endocrinology, and Nutrition, and Diabetes and Obesity Center of Excellence (G.J.M., M.W.S.), Department of Medicine, University of Washington, Seattle, Washington 98195; Program in Neuroscience (M.Z., S.M.A.), Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, Washington 99164
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Ouyang Z, Ouyang Y, Zhu M, Lu Y, Zhang Z, Shi J, Li X, Ren G. Diffusion-weighted imaging with fat suppression using short-tau inversion recovery: Clinical utility for diagnosis of breast lesions. Clin Radiol 2014; 69:e337-44. [DOI: 10.1016/j.crad.2014.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 03/11/2014] [Accepted: 04/07/2014] [Indexed: 12/27/2022]
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230
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Liu P, Zeng F, Yang F, Wang J, Liu X, Wang Q, Zhou G, Zhang D, Zhu M, Zhao R, Wang A, Gong Q, Liang F. Altered structural covariance of the striatum in functional dyspepsia patients. Neurogastroenterol Motil 2014; 26:1144-54. [PMID: 24865440 DOI: 10.1111/nmo.12372] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Accepted: 05/01/2014] [Indexed: 12/24/2022]
Abstract
BACKGROUND Functional dyspepsia (FD) is thought to be involved in dysregulation within the brain-gut axis. Recently, altered striatum activation has been reported in patients with FD. However, the gray matter (GM) volumes in the striatum and structural covariance patterns of this area are rarely explored. The purpose of this study was to examine the GM volumes and structural covariance patterns of the striatum between FD patients and healthy controls (HCs). METHODS T1-weighted magnetic resonance images were obtained from 44 FD patients and 39 HCs. Voxel-based morphometry (VBM) analysis was adopted to examine the GM volumes in the two groups. The caudate- or putamen-related regions identified from VBM analysis were then used as seeds to map the whole brain voxel-wise structural covariance patterns. Finally, a correlation analysis was used to investigate the effects of FD symptoms on the striatum. KEY RESULTS The results showed increased GM volumes in the bilateral putamen and right caudate. Compared with the structural covariance patterns of the HCs, the FD-related differences were mainly located in the amygdala, hippocampus/parahippocampus (HIPP/paraHIPP), thalamus, lingual gyrus, and cerebellum. And significant positive correlations were found between the volumes in the striatum and the FD duration in the patients. CONCLUSIONS & INFERENCES These findings provided preliminary evidence for GM changes in the striatum and different structural covariance patterns in patients with FD. The current results might expand our understanding of the pathophysiology of FD.
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Affiliation(s)
- P Liu
- Life Science Research Center, School of Life Science and Technology, Xidian University, Xi'an, China
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231
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Zhu M, Zhu B, Wang YH, Wu Y, Xu L, Guo LP, Yuan ZR, Zhang LP, Gao X, Gao HJ, Xu SZ, Li JY. Linkage Disequilibrium Estimation of Chinese Beef Simmental Cattle Using High-density SNP Panels. Asian-Australas J Anim Sci 2014; 26:772-9. [PMID: 25049849 PMCID: PMC4093237 DOI: 10.5713/ajas.2012.12721] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 03/18/2013] [Accepted: 02/27/2013] [Indexed: 11/27/2022]
Abstract
Linkage disequilibrium (LD) plays an important role in genomic selection and mapping quantitative trait loci (QTL). In this study, the pattern of LD and effective population size (Ne) were investigated in Chinese beef Simmental cattle. A total of 640 bulls were genotyped with IlluminaBovinSNP50BeadChip and IlluminaBovinHDBeadChip. We estimated LD for each autosomal chromosome at the distance between two random SNPs of <0 to 25 kb, 25 to 50 kb, 50 to 100 kb, 100 to 500 kb, 0.5 to 1 Mb, 1 to 5 Mb and 5 to 10 Mb. The mean values of r2 were 0.30, 0.16 and 0.08, when the separation between SNPs ranged from 0 to 25 kb to 50 to 100 kb and then to 0.5 to 1 Mb, respectively. The LD estimates decreased as the distance increased in SNP pairs, and increased with the increase of minor allelic frequency (MAF) and with the decrease of sample sizes. Estimates of effective population size for Chinese beef Simmental cattle decreased in the past generations and Ne was 73 at five generations ago.
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Affiliation(s)
- M Zhu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - B Zhu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Y H Wang
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Y Wu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - L Xu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - L P Guo
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Z R Yuan
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - L P Zhang
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - X Gao
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - H J Gao
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - S Z Xu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - J Y Li
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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232
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Dai Y, Dong S, Zhu M, Wu D, Zhong Y. Visualizing cerebral veins in fetal brain using susceptibility-weighted MRI. Clin Radiol 2014; 69:e392-7. [PMID: 25060932 DOI: 10.1016/j.crad.2014.06.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 06/09/2014] [Accepted: 06/10/2014] [Indexed: 01/12/2023]
Abstract
AIM To explore the feasibility of two-dimensional (2D) susceptibility-weighted imaging (SWI) in the visualization of cerebral veins in the foetal brain. MATERIALS AND METHODS Forty-two pregnant healthy women (gestational age: 19-37 weeks, mean: 28.5 ± 7.1 weeks) underwent SWI examination using a 1.5 T MRI system. Two neurologists independently analysed all magnetic resonance imaging (MRI) studies. The relationship between the veins detected and the gestational age was investigated. The prominence of veins was assessed using a categorical score. RESULTS In total, 167 veins were detected by SWI in 29 subjects with a symmetric hemisphere distribution (p > 0.05). An additional vein was detected by SWI biweekly from 24 weeks of gestation. Most veins of Galen and internal cerebral veins on SWI images were prominent, whereas others were faint or moderate. CONCLUSION SWI appears to be a feasible method of detecting cerebral veins in the foetal brain.
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Affiliation(s)
- Y Dai
- Philips Healthcare, People's Republic of China
| | - S Dong
- Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, People's Republic of China
| | - M Zhu
- Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, People's Republic of China.
| | - D Wu
- Shanghai Key Laboratory of Magnetic Resonance, Department of Physics, East China Normal University, People's Republic of China
| | - Y Zhong
- Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, People's Republic of China
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233
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Guo YM, Yu WW, Zhu M, Guo CY. Clinicopathological and prognostic significance of epidermal growth factor receptor overexpression in patients with esophageal adenocarcinoma: a meta-analysis. Dis Esophagus 2014; 28:750-6. [PMID: 24961755 DOI: 10.1111/dote.12248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The prognostic significance of epidermal growth factor receptor (EGFR) overexpression in patients with esophageal adenocarcinoma (EAC) remains controversial. Eligible studies that investigated the association between survival in EAC and the expression status of EGFR were identified by an electronic search of PubMed, EMBASE, and ISI Web of Science. A meta-analysis was performed to clarify the impact of EGFR overexpression on clinicopathological parameters or overall survival (OS) in EAC. A total of seven studies including 1028 patients were subjected to the final analysis. The overall results suggested that overexpression of EGFR was significantly correlated with not only the depth of invasion, lymph node status, and tumors stage of EAC, with a pooled odds ratio of 2.99 (95% confidence interval [CI]: 1.07-8.35; Z = 2.09; P = 0.037), 3.05 (95% CI: 1.77-5.27; Z = 4.00; P < 0.001), and 5.37 (95% CI: 2.49-11.57; Z = 4.29; P < 0.001), respectively, but also the poorer OS with a pooled hazard ratio of 2.20 (95% CI: 1.47-3.31; Z = 3.79; P < 0.001). Overexpression of EGFR correlates with not only the clinicopathological features, but also the worse OS, and it might be useful as a predictive biomarker in clinical practice, yet the clinicopathological and prognostic role of EGFR in EAC still needs further confirmation by well-designed prospective studies.
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Affiliation(s)
- Y-M Guo
- Department of Gastroenterology, Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - W-W Yu
- Department of Radiation Oncology, Shanghai Jiao Tong University Affiliated Sixth people's Hospital, Shanghai, China
| | - M Zhu
- Department of Biostatistics, School of Public Health, Fudan University, Shanghai, China
| | - C-Y Guo
- Department of Gastroenterology, Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
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Wang L, Huang Y, Guo Q, Fan X, Lu Y, Zhu S, Wang Y, Bo X, Chang X, Zhu M, Wang Z. Differentiation of iPSCs into insulin-producing cells via adenoviral transfection of PDX-1, NeuroD1 and MafA. Diabetes Res Clin Pract 2014; 104:383-92. [PMID: 24794627 DOI: 10.1016/j.diabres.2014.03.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 02/24/2014] [Accepted: 03/22/2014] [Indexed: 12/13/2022]
Abstract
AIMS The aim of this study was to evaluate the effect of PDX-1 (pancreatic and duodenal homeobox-1), NeuroD1 (neurogenic differentiation-1) and MafA (V-maf musculoaponeurotic fibrosarcoma oncogene homolog A) in the differentiation of induced pluripotent stem cells (iPSCs) into insulin-producing cells and to explore this new approach of cell transplantation therapy for type 1 diabetes in mice. METHODS iPSCs were infected with adenovirus (Ad-Mouse PDX-1-IRES-GFP, Ad-Mouse NeuroD1-IRES-GFP and Ad-Mouse Mafa-IRES-GFP) and then differentiated into insulin-producing cells in vitro. RT-PCR was applied to detect insulin gene expression, immunofluorescence to identify insulin protein, and mouse insulin enzyme-linked immunosorbent assay (ELISA) was used to evaluate the amount of insulin at different concentration of glucose. Insulin-producing cells were transplanted into the liver parenchyma of diabetic mice. Immunohistochemistry, intraperitoneal glucose tolerance test (IPGTT) and fasting blood glucose (FBG) were performed to assess the function of insulin-producing cells. RESULTS Insulin biosynthesis and secretion were induced in iPSCs and insulin-producing cells were responsive to glucose in a dose-dependent manner. Gene expression of the three-gene-modified embryoid bodies (EBs) was similar to the mouse pancreatic β cell line MIN6. Transplantation of insulin-producing cells into type I diabetic mice resulted in hyperglycemia reversal. CONCLUSIONS The insulin-producing cells we obtained from three-gene-modified EBs may be used as seed cells for tissue engineering and may represent a cell replacement strategy for the production of β cells for the treatment of type 1 diabetes.
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Affiliation(s)
- Lei Wang
- Department of Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Yan Huang
- Department of Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Qingsong Guo
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Xiangjun Fan
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Yuhua Lu
- Department of Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Shajun Zhu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Yao Wang
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Xiangkun Bo
- Department of Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Xu Chang
- Department of Surgical Comprehensive Laboratory, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Mingyan Zhu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China
| | - Zhiwei Wang
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong University, 226001 Nantong, PR China.
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Dhar M, Zhu M, Impey S, Lambert TJ, Bland T, Karatsoreos IN, Nakazawa T, Appleyard SM, Wayman GA. Leptin induces hippocampal synaptogenesis via CREB-regulated microRNA-132 suppression of p250GAP. Mol Endocrinol 2014; 28:1073-87. [PMID: 24877561 DOI: 10.1210/me.2013-1332] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Leptin acts in the hippocampus to enhance cognition and reduce depression and anxiety. Cognitive and emotional disorders are associated with abnormal hippocampal dendritic spine formation and synaptogenesis. Although leptin has been shown to induce synaptogenesis in the hypothalamus, its effects on hippocampal synaptogenesis and the mechanism(s) involved are not well understood. Here we show that leptin receptors (LepRs) are critical for hippocampal dendritic spine formation in vivo because db/db mice lacking the long form of the leptin receptor (LepRb) have reduced spine density on CA1 and CA3 neurons. Leptin promotes the formation of mature spines and functional glutamate synapses on hippocampal pyramidal neurons in both dissociated and slice cultures. These effects are blocked by short hairpin RNAs specifically targeting the LepRb and are absent in cultures from db/db mice. Activation of the LepR leads to cAMP response element-binding protein (CREB) phosphorylation and initiation of CREB-dependent transcription via the MAPK kinase/Erk pathway. Furthermore, both Mek/Erk and CREB activation are required for leptin-induced synaptogenesis. Leptin also increases expression of microRNA-132 (miR132), a well-known CREB target, which is also required for leptin-induced synaptogenesis. Last, leptin suppresses the expression of p250GAP, a miR132 target, and this suppression is obligatory for leptin's effects as is the downstream target of p250GAP, Rac1. LepRs appear to be critical in vivo as db/db mice have lowered hippocampal miR132 levels and elevated p250GAP expression. In conclusion, we identify a novel signaling pathway by which leptin increases synaptogenesis through inducing CREB transcription and increasing microRNA-mediated suppression of p250GAP activity, thus removing a known inhibitor of Rac1-stimulated synaptogenesis.
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Affiliation(s)
- Matasha Dhar
- Department of Integrative Physiology and Neuroscience (M.D., M.Z., T.J.L., T.B., I.N.K., S.M.A., G.A.W.), Program in Neuroscience, Washington State University, Pullman, Washington 99164; Oregon Stem Cell Center (S.I.), Oregon Health and Sciences University, Portland, Oregon 97239; and Department of Neurophysiology (T.N.), Graduate School of Medicine, University of Tokyo, Tokyo 113-0033 Japan
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Zhu M, Li D, Wu Y, Huang X, Wu M. TREM-2 promotes macrophage-mediated eradication of Pseudomonas aeruginosa via a PI3K/Akt pathway. Scand J Immunol 2014; 79:187-96. [PMID: 24383713 DOI: 10.1111/sji.12148] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 12/16/2013] [Indexed: 01/11/2023]
Abstract
Triggering receptor expressed on myeloid cells 2 (TREM-2) is a cell surface receptor abundantly expressed on myeloid lineage cells such as macrophages and dendritic cells. It is reported that TREM-2 functions as an inflammatory inhibitor in macrophages and dendritic cells. However, the role of TREM-2 in bacterial killing remains unclear. This study explored the role of TREM-2 in bacterial eradication of Pseudomonas aeruginosa (PA), a Gram-negative bacterium which causes various opportunistic infections. Phagocytosis assay assessed by flow cytometry suggested that TREM-2 was not involved in the uptake of PA by macrophages, while bacterial plate count data showed that TREM-2 was required for macrophage-mediated intracellular killing of PA. Moreover, our results demonstrated that TREM-2 promoted macrophage killing by enhancing reactive oxygen species (ROS), but not nitric oxygen (NO) production. Treatment with N-acetylcysteine, a ROS scavenger, diminished the TREM-2-mediated intracellular killing of PA. To further investigate the underlined mechanisms of TREM-2-promoted bacterial killing, we examined the activation of downstream mitogen-activated protein kinases and PI3K/Akt pathway. Western blot data showed that silencing of TREM-2 inhibited phosphorylation of Akt, but not ERK, JNK or P38. In addition, pretreatment with PI3K active product PIP3 DiC16 reversed the elevation of intracellular bacterial load in TREM-2-silenced macrophages, while PI3K inhibitor wortmannin restored the decline of bacterial load in TREM-2-overexpressed macrophages. These data together suggested that the TREM-2-mediated bacterial killing is dependent on the activation of PI3K/Akt signalling, which may provide a better understanding of the host antibacterial immune defence.
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Affiliation(s)
- M Zhu
- Department of Immunology, Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China; Key Laboratory of Tropical Diseases Control, Ministry of Education, Sun Yat-sen University, Guangzhou, China
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Meng FY, Zhang LC, Liu Y, Pan LH, Zhu M, Li CL, Li YW, Qian W, Liang R. Efficacy and safety of gabapentin for treatment of postherpetic neuralgia: a meta-analysis of randomized controlled trials. Minerva Anestesiol 2014; 80:556-567. [PMID: 24257149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Postherpetic neuralgia (PHN) is a common type of neuropathic pain occurring after resolution of herpes zoster rash. Although gabapentin is a widely used treatment, some disagreements exist about its efficacy and safety. Meta-analysis was performed to better evaluate the efficacy and safety of gabapentin for management of PHN. METHODS Randomized, double-blind, placebo-controlled trials of gabapentin to treat PHN were identified by searching MEDLINE, EMBASE, and CENTRAL databases. Searches were restricted to studies published in English. RESULTS Seven trials involving a total of 2039 participants were identified. Pooled analysis showed that gabapentin reduced PHN-related pain significantly more than placebo (mean difference, MD=-0.89, 95% CI -1.58 to -0.18, P<0.001). Gabapentin reduced pain below baseline by at least 50% in significantly more patients than did placebo (RR=1.59, 95% CI 1.35 to 1.88, P<0.001). Gabapentin was significantly more likely than placebo to lead patients to rate their global impression of change as "much improved" or "very much improved" (RR=1.82, 95% CI 1.41 to 2.35, P=0.003). Gabapentin also improved sleep quality significantly more than did placebo (MD=-0.62, 95% CI -0.67 to -0.57, P<0.001). On the other hand, patients given gabapentin were significantly more likely to experience dizziness, somnolence, peripheral edema, ataxia or gait disturbance and diarrhea. Subgroup analysis on formulation of gabapentin showed that gabapentin enacarbil had similar efficacy of pain relief with other formulations while it may be superior to others in term of compliance and safety. CONCLUSION This meta-analysis indicates that gabapentin is an effective and well-tolerated treatment for patients with PHN.
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Affiliation(s)
- F Y Meng
- Department of Anesthesiology, Tumor Hospital of Guangxi Medical University, Nanning, People's Republic of China -
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Wang C, Chi Y, Li J, Miao Y, Li S, Su W, Jia S, Chen Z, Du S, Zhang X, Zhou Y, Wu W, Zhu M, Wang Z, Yang H, Xu G, Wang S, Yang J, Guan Y. FAM3A activates PI3K p110α/Akt signaling to ameliorate hepatic gluconeogenesis and lipogenesis. Hepatology 2014; 59:1779-90. [PMID: 24806753 DOI: 10.1002/hep.26945] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 11/18/2013] [Indexed: 12/12/2022]
Abstract
UNLABELLED FAM3A belongs to a novel cytokine-like gene family, and its physiological role remains largely unknown. In our study, we found a marked reduction of FAM3A expression in the livers of db/db and high-fat diet (HFD)-induced diabetic mice. Hepatic overexpression of FAM3A markedly attenuated hyperglycemia, insulin resistance, and fatty liver with increased Akt (pAkt) signaling and repressed gluconeogenesis and lipogenesis in the livers of those mice. In contrast, small interfering RNA (siRNA)-mediated knockdown of hepatic FAM3A resulted in hyperglycemia with reduced pAkt levels and increased gluconeogenesis and lipogenesis in the livers of C57BL/6 mice. In vitro study revealed that FAM3A was mainly localized in the mitochondria, where it increases adenosine triphosphate (ATP) production and secretion in cultured hepatocytes. FAM3A activated Akt through the p110α catalytic subunit of PI3K in an insulin-independent manner. Blockade of P2 ATP receptors or downstream phospholipase C (PLC) and IP3R and removal of medium calcium all significantly reduced FAM3A-induced increase in cytosolic free Ca(2+) levels and attenuated FAM3A-mediated PI3K/Akt activation. Moreover, FAM3A-induced Akt activation was completely abolished by the inhibition of calmodulin (CaM). CONCLUSION FAM3A plays crucial roles in the regulation of glucose and lipid metabolism in the liver, where it activates the PI3K-Akt signaling pathway by way of a Ca(2+) /CaM-dependent mechanism. Up-regulating hepatic FAM3A expression may represent an attractive means for the treatment of insulin resistance, type 2 diabetes, and nonalcoholic fatty liver disease (NAFLD).
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Affiliation(s)
- Chunjiong Wang
- Department of Physiology and Pathophysiology, Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education, Peking University Health Science Center, Beijing, China
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Wang M, Zhu M, He J, Shi T, Li Q, Wei Q. P0217 Potentially functional polymorphisms in the mTOR gene and gastric adenocarcinoma susceptibility in an eastern Chinese population. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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240
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Pang YX, Wang WQ, Zhang YB, Yuan Y, Yu JB, Zhu M, Chen YY. Genetic diversity of the Chinese traditional herb Blumea balsamifera (Asteraceae) based on AFLP markers. Genet Mol Res 2014; 13:2718-26. [PMID: 24782086 DOI: 10.4238/2014.april.14.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Blumea balsamifera is a commercially important medicinal herb in China and other parts of Asia. It is used to produce borneol. This plant grows in the wild, but resources have diminished greatly in recent years. We examined the genetic diversity of this species to help develop conservation strategies; 35 plants from five provinces were analyzed using AFLPs. Eight AFLP primer combinations generated 1367 fragments, giving a mean of 172 fragments per primer combination. Polymorphism in the germplasm analysis was found for 1360 (99.48%) of the fragments, of which 264 (19.27%) fragments were unique (accession specific) and 423 (25.33%) of the fragments were rare (present in less than 10% of the accessions). The polymorphic fragments were used to group the accessions in a UPGMA phenogram. Most grouping was geographical. In general, accessions coming from Guizhou and Guangxi showed higher diversities as these accessions were scattered in different groups. The genetic distance estimated by Jaccard similarity coefficient index showed low variability among genotypes (coefficient value ranged from 0.60 to 0.95). More attention should be given to the study and conservation of the biodiversity of this economically important genus.
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Affiliation(s)
- Y X Pang
- Tropical Crop Genetic Resources, Institute of Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - W Q Wang
- College of Chinese Medical Sciences, Beijing University of Traditional Chinese Medicine, Beijing, China
| | - Y B Zhang
- Tropical Crop Genetic Resources, Institute of Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - Y Yuan
- Environment and Plant Protection, College of Hainan University, Danzhou, Hainan, China
| | - J B Yu
- Tropical Crop Genetic Resources, Institute of Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - M Zhu
- Tropical Crop Genetic Resources, Institute of Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
| | - Y Y Chen
- Tropical Crop Genetic Resources, Institute of Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan, China
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Li MY, Zhu M, Feng F, Cai FY, Fan KC, Jiang H, Wang ZQ, Linghu EQ. Long interspersed nucleotide acid element-1 ORF-1 protein promotes proliferation and invasion of human colorectal cancer LoVo cells through enhancing ETS-1 activity. Genet Mol Res 2014; 13:6981-94. [PMID: 24782214 DOI: 10.4238/2014.april.14.13] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The human proto-oncogene long interspersed nucleotide acid element-1 (LINE-1) open reading frame-1 protein (ORF-1p) is involved in the progress of several cancers. The transcription factor ETS-1 can mediate the transcription of some downstream genes that play specific roles in the regulation of cancerous cell invasion and metastasis. In this study, the effects of LINE-1 ORF-1p on ETS-1 activity and on the proliferation and invasion of human colorectal cancer LoVo cells were investigated. Results showed that the overexpression of LINE-1 ORF-1p enhanced the transcription of ETS-1 downstream genes and increased their protein levels, and downregulation of the LINE-1 ORF-1p level by small interfering RNA (siRNA) reduced the transcriptional activation of ETS-1. In addition, overexpression of LINE-1 ORF-1p promoted LoVo cell proliferation and anchor-independent growth, and a knockdown of the LINE-1 protein level by siRNA reduced the proliferation and anchor-independent growth ability of LoVo cells. In vivo data revealed that LINE-1 ORF-1p overexpression increased LoVo tumor growth in nude mice, whereas the siRNA knockdown of endogenous LINE-1 ORF-1p expression decreased LoVo cell growth in nude mice. Therefore, LINE- 1 ORF-1p could promote LoVo cell proliferation and invasion both in vitro and in vivo, indicating that it might be a useful molecular target for the treatment of human colorectal cancer.
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Affiliation(s)
- M Y Li
- Department of Gastroenterology, Nan Lou Division, Chinese PLA General Hospital, Beijing, China
| | - M Zhu
- Department of Gastroenterology, Nan Lou Division, Chinese PLA General Hospital, Beijing, China
| | - F Feng
- Department of Pharmacy, General Hospital of Shenyang Military Command, Shenyang, China
| | - F Y Cai
- Department of Gastroenterology, Nan Lou Division, Chinese PLA General Hospital, Beijing, China
| | - K C Fan
- Department of Gastroenterology, Nan Lou Division, Chinese PLA General Hospital, Beijing, China
| | - H Jiang
- Department of Gastroenterology, Nan Lou Division, Chinese PLA General Hospital, Beijing, China
| | - Z Q Wang
- Department of Gastroenterology, Nan Lou Division, Chinese PLA General Hospital, Beijing, China
| | - E Q Linghu
- Department of Gastroenterology, Nan Lou Division, Chinese PLA General Hospital, Beijing, China
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242
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Zheng ZJ, Gao Y, Gui Y, Zhu M. Studying the fine microstructure of the passive film on nanocrystalline 304 stainless steel by EIS, XPS, and AFM. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2472-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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243
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Peng Y, Gao M, Wang X, Zhu M. The multi-targeted kinase inhibitor Sorafenib inhibits Enterovirus 71 IRES activity. Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.1356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Pei H, Chen W, Hu W, Zhu M, Liu T, Wang J, Zhou G. GANRA-5 protects both cultured cells and mice from various radiation types by functioning as a free radical scavenger. Free Radic Res 2014; 48:670-8. [PMID: 24580122 DOI: 10.3109/10715762.2014.898843] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The radio-protective effects of the oxazolone derivative chemical compound 4-(4-methoxy-3-methoxyphenyl-methyl)-2-phenyl- 5(4H)-oxazolone (GANRA-5) against different types of radiation including X-rays, carbon ion beams, microwaves and ultraviolet light (UV) were studied. Cell proliferation/cytotoxicity assay and colony-forming assay were conducted to evaluate the toxicity of GANRA-5. To test its influence on the induction of double-stranded break (DSB) formation and genomic instability, γH2AX focus-forming assay as well as cytokinesis-block micronucleus assay was utilized. Our results indicate that GANRA-5 exhibits low toxicity, while providing high radio-protective effects for MRC-5 cells against different types of radiation. We also found that GANRA-5 acts as a free radical scavenger. Our animal studies provided evidence that GANRA-5 significantly increases the survival rate of mice after X-ray irradiation. Analyses of hemogram, visceral index and detection of superoxide dismutase (SOD) and malondialdehyde (MDA) in the viscera indicate both low toxicity of GANRA-5, combined with its ability to shield radiation risk. In conclusion, our results suggest that GANRA-5 has the potential to be used as a safe and efficient radio-protectant.
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Affiliation(s)
- H Pei
- Department of Space Radiobiology, Institute of Modern Physics, Chinese Academy of Sciences , Lanzhou , P. R. China
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245
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Lu Y, Lu J, Li X, Zhu H, Fan X, Zhu S, Wang Y, Guo Q, Wang L, Huang Y, Zhu M, Wang Z. MiR-200a inhibits epithelial-mesenchymal transition of pancreatic cancer stem cell. BMC Cancer 2014; 14:85. [PMID: 24521357 PMCID: PMC3923443 DOI: 10.1186/1471-2407-14-85] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 01/27/2014] [Indexed: 12/24/2022] Open
Abstract
Background Pancreatic cancer is one of the most aggressive cancers, and the aggressiveness of pancreatic cancer is in part due to its intrinsic and extrinsic drug resistance characteristics, which are also associated with the acquisition of epithelial-to-mesenchymal transition (EMT). Increasing evidence suggests that EMT-type cells share many biological characteristics with cancer stem-like cells. And miR-200 has been identified as a powerful regulator of EMT. Methods Cancer Stem Cells (CSCs) of human pancreatic cancer cell line PANC-1 were processed for CD24, CD44 and ESA multi-colorstaining, and sorted out on a BD FACS Aria II machine. RT-qPCR was performed using the miScript PCR Kit to assay the expression of miR-200 family. In order to find the role of miR-200a in the process of EMT, miR-200a mimic was transfected to CSCs. Results Pancreatic cancer cells with EMT phenotype displayed stem-like cell features characterized by the expression of cell surface markers CD24, CD44 and epithelial-specific antigen (ESA), which was associated with decreased expression of miR-200a. Moreover, overexpression of miR-200a was resulted in down-regulation of N-cadherin, ZEB1 and vimentin, but up-regulation of E-cadherin. In addition, miR-200a overexpression inhibited cell migration and invasion in CSCs. Conclusion In our study, we found that miR-200a played an important role in linking the characteristics of cancer stem-like cells with EMT-like cell signatures in pancreatic cancer. Selective elimination of cancer stem-like cells by reversing the EMT phenotype to mesenchymal-to-epithelial transition (MET) phenotype using novel agents would be useful for prevention and/or treatment of pancreatic cancer.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Mingyan Zhu
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province 226001, P, R, China.
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Zhu M, Zhu Y, Lance P. TNFα-activated stromal COX-2 signalling promotes proliferative and invasive potential of colon cancer epithelial cells. Cell Prolif 2014; 46:374-81. [PMID: 23869759 DOI: 10.1111/cpr.12047] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 05/12/2013] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVES Up to now it has been unclear whether stromal/epithelial interaction affects progression of colon cancer. This study was designed to examine effects of tumour necrosis factor alpha (TNFα)-activated stromal cyclooxygenase-2 (COX-2) signalling on proliferation and invasiveness of colon cancer epithelial cells. MATERIALS AND METHODS Cyclooxygenase-2 mRNA and protein were determined by real-time PCR and western blotting and prostaglandin E2 (PGE2 ) was assayed by radioimmunoassay. Cell proliferation and invasiveness were determined by transwell chamber assays and protein kinase C (PKC) was assayed by Biotrak(™) PKC Assay System. RESULTS Our results indicated that TNFα, a powerful inflammatory cytokine, strongly promoted COX-2 expression and PGE2 production in colon cancer-associated fibroblasts. Using in vitro assays for estimating proliferative and invasive potential, we discovered that activation of stromal COX-2 signalling significantly promoted proliferation and invasiveness of colon cancer epithelial cells. In addition, selective COX-2 inhibitor N-[2-(Cyclohexyloxy)-4-nitrophenyl]methanesulfonamide, blocked such proliferative and invasive effects on the cancer epithelial cells. In this process, PKC was involved in activation of COX-2 signalling in the fibroblasts. CONCLUSION We conclude that activation of stromal COX-2 signalling by TNFα played a major role in promoting proliferation and invasiveness of colon cancer epithelial cells.
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Affiliation(s)
- M Zhu
- Arizona Cancer Center, The University of Arizona, Tucson, AZ, 85724, USA
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Abstract
The clinical association between obesity-associated type 2 diabetes (T2D) and periodontitis, coupled with the increasing prevalence of these diseases, justifies studies to identify mechanisms responsible for the vicious feed-forward loop between systemic and oral disease. Changes in the immune system are critical for both obesity-associated T2D and periodontitis and therefore may link these diseases. Recent studies at the intersection of immunology and metabolism have greatly advanced our understanding of the role the immune system plays in the transition between obesity and obesity-associated T2D and have shown that immune cells exhibit similar functional changes in obesity/T2D and periodontitis. Furthermore, myeloid and lymphoid cells likely synergize to promote obesity/T2D-associated periodontitis despite complexities introduced by disease interaction. Thus the groundwork is being laid for researchers to exploit existing models to understand immune cell dysfunction and break the devastating relationship between obesity-associated T2D and oral disease.
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Affiliation(s)
- M Zhu
- Department of Microbiology, Boston University School of Medicine, Boston, MA, USA
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248
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Ding YJ, Han B, Yang B, Zhu M. NT-proBNP plays an important role in the effect of ibuprofen on preterm infants with patent ductus arteriosus. Eur Rev Med Pharmacol Sci 2014; 18:2596-2598. [PMID: 25317790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE The aim of this study was to clarify the role of N-terminal pro-brain natriuretic peptide, (NT-proBNP) in ibuprofen on preterm infants with patent ductus arteriosus (PDA). PATIENTS AND METHODS Preterm infants with PDA were enrolled in the present study. Patients were randomized into two groups: ibuprofen group received oral ibuprofen 10 mg/kg, followed by 5 mg/kg after 24 and 48 h, and the placebo group received the same volume of 5% glucose. PDA and NT-proBNP were detected during 24 hours, 3 and 7 days of age. RESULTS The results indicated that babies who received oral ibuprofen had higher PDA closure at 7 days after treatment (p < 0.05). Significantly decrease of NT-proBNP was found in ibuprofen group than the placebo group at 3 and 7 days (all p < 0.05). CONCLUSIONS Collectively, the favorable effects of ibuprofen on PDA in premature infants maybe mediated in part by the reduction of NT-proBNP level.
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Affiliation(s)
- Y-J Ding
- Provincial Hospital Affiliated to Shandong University, Jinan, PR China.
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Bhattacharyya A, Chen S, Zhu M. Graphene reinforced ultra high molecular weight polyethylene with improved tensile strength and creep resistance properties. EXPRESS POLYM LETT 2014. [DOI: 10.3144/expresspolymlett.2014.10] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Sun W, Sun Y, Zhu M, Wang Z, Zhang H, Xin Y, Jiang G, Guo X, Zhang Z, Liu Y. The role of plasma cell-free DNA detection in predicting preoperative chemoradiotherapy response in rectal cancer patients. Oncol Rep 2013; 31:1466-72. [PMID: 24378613 DOI: 10.3892/or.2013.2949] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 11/27/2013] [Indexed: 11/05/2022] Open
Abstract
In the present study, we studied the relationship between plasma cell-free DNA and the effect of preoperative chemoradiotherapy in patients with rectal cancer. The concentration, KRAS mutation and O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation status of cell-free DNA were measured by using polymerase chain reaction (PCR) analyses. The response to chemoradiotherapy was assessed using tumor regression grading (TRG) scores. The cell-free DNA concentrations in patients with rectal cancer (n=34) were significantly higher compared to healthy controls (n=10). The 400-base pair (bp) DNA concentration, 400-/100-bp DNA ratio decreased significantly after chemoradiotherapy in the good response group. The incidence of KRAS mutation decreased significantly after chemoradiotherapy in both good and poor response groups. Higher MGMT promoter methylation status at baseline DNA was associated with a better tumor response. Therefore, cell-free DNA detection may be useful in evaluating the effect of preoperative chemoradiotherapy in patients with rectal cancer.
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Affiliation(s)
- W Sun
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Y Sun
- Cancer Research Institute of Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - M Zhu
- Cancer Research Institute of Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Z Wang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - H Zhang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Y Xin
- Cancer Research Institute of Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - G Jiang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - X Guo
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Z Zhang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
| | - Y Liu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China
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