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Yi W, Shi J, Wang L, Wang D, Wang Y, Song J, Xin L, Jiang F. Maternal PFOS exposure in mice induces hepatic lipid accumulation and inflammation in adult female offspring: Involvement of microbiome-gut-liver axis and autophagy. J Hazard Mater 2024; 470:134177. [PMID: 38565010 DOI: 10.1016/j.jhazmat.2024.134177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
Perfluorooctane sulfonates (PFOS) are the persistent organic pollutants. In the present study, 0, 0.3, or 3-mg/kg PFOS were administered to pregnant mice from GD 11 to GD 18. The histopathology of liver and intestine, serum and hepatic lipid levels, lipid metabolism related genes, and gut microbiota were examined in adult female offspring. The results suggested that maternal PFOS exposure increased serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and induced F4/80+ macrophage infiltration in adult female offspring, in addition to the elevation of TNF-α and IL-1β mRNA levels in low-dose and high-dose groups, respectively. Furthermore, maternal exposure to PFOS increased serum triglyceride (TG) and hepatic total cholesterol (TC) levels, which was associated with the alteration of the process of fatty acid transport and β-oxidation, TG synthesis and transport, cholesterol synthesis and excretion in the liver. The AMPK/mTOR/autophagy signaling was also inhibited in the liver of adult female offspring. Moreover, changes in gut microbiota were also related to lipid metabolism, especially for the Desulfovibrio, Ligilactobacillus, Enterorhabdus, HT002 and Peptococcaceae_unclassified. Additionally, maternal exposure to PFOS decreased mRNA expressions of the tight junction protein and AB+ goblet cells in the colon, while increasing the overproduction of lipopolysaccharides (LPS) and F4/80+ macrophage infiltration. Collectively, maternal PFOS exposure induced liver lipid accumulation and inflammation, which strongly correlated with the disruption of the gut-liver axis and autophagy in adult female offspring, highlighting the persistent adverse effects in offspring exposed to PFOS.
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Affiliation(s)
- Wenjie Yi
- Department of Occupational and Environmental Health, School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu, China
| | - Junwen Shi
- Suzhou Industrial Park Center for Disease Control and Prevention, Suzhou, Jiangsu, China
| | - Liying Wang
- Department of Occupational and Environmental Health, School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu, China
| | - Dongxuan Wang
- Department of Occupational and Environmental Health, School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu, China
| | - Yiting Wang
- Department of Occupational and Environmental Health, School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu, China
| | - Jingwen Song
- Department of Occupational and Environmental Health, School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu, China
| | - Lili Xin
- Department of Occupational and Environmental Health, School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu, China.
| | - Fei Jiang
- Department of Occupational and Environmental Health, School of Public Health, Suzhou Medical College of Soochow University, 199 Renai Road, Suzhou, Jiangsu, China; School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, Jiangsu, China.
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Zeng Z, Zhou MF, Lin YJ, Bi XY, Yang L, Deng W, Jiang TT, Hu LP, Xu MJ, Zhang L, Yi W, Li MH. [A real-world study on the features of postpartum hepatitis flares in pregnant women with chronic HBV infection]. Zhonghua Gan Zang Bing Za Zhi 2024; 32:113-118. [PMID: 38514259 DOI: 10.3760/cma.j.cn501113-20231122-00216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Objective: To analyze the clinical features of postpartum hepatitis flares in pregnant women with hepatitis B virus (HBV) infection. Methods: A retrospective study was conducted. Patients who met the enrollment criteria were included. Liver function and HBV virology tests were collected from pregnant women with chronic HBV infection at delivery, 6, 24, 36, and 48 weeks after delivery through the hospital information and test system. Additionally, antiviral therapy types and drug withdrawal times were collected. Statistical analysis was performed on all the resulting data. Results: A total of 533 pregnant women who met the inclusion criteria were included, with all patients aged (29.5±3.7) years old. A total of 408 cases received antiviral drugs during pregnancy to interrupt mother-to-child transmission. There was no significant difference in the levels of alanine aminotransferase (ALT, z = -1.981, P = 0.048), aspartate aminotransferase (AST, z = -3.956, P < 0.001), HBV load (z = -15.292, P < 0.001), and HBeAg (z = -4.77, P < 0.001) at delivery in patients who received medication and those who did not. All patients ALT, AST, total bilirubin, direct bilirubin, and albumin showed an upward trend within six weeks after delivery. A total of 231 cases developed hepatitis within 48 weeks after delivery. Among them, 173 cases first showed ALT abnormalities within six weeks postpartum. Conclusion: Hepatitis flare incidence peaked six weeks after delivery or six weeks after drug withdrawal in pregnant women with chronic HBV infection.
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Affiliation(s)
- Z Zeng
- Department of Hepatology Division 2, Peking University Ditan Teaching Hospital, Beijing 100015, China
| | - M F Zhou
- Departmentof Obstetrics and Gynecology, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - Y J Lin
- Department of Hepatology Division 2, Peking University Ditan Teaching Hospital, Beijing 100015, China
| | - X Y Bi
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - L Yang
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - W Deng
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - T T Jiang
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - L P Hu
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - M J Xu
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - L Zhang
- Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - W Yi
- Departmentof Obstetrics and Gynecology, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
| | - M H Li
- Department of Hepatology Division 2, Peking University Ditan Teaching Hospital, Beijing 100015, China Department of Hepatology Division 2, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
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Liang Y, Lu J, Yi W, Cai M, Shi W, Li B, Zhang Z, Jiang F. 1α,25-dihydroxyvitamin D 3 supplementation alleviates perfluorooctanesulfonate acid-induced reproductive injury in male mice: Modulation of Nrf2 mediated oxidative stress response. Environ Toxicol 2023; 38:322-331. [PMID: 36321694 DOI: 10.1002/tox.23685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 09/30/2022] [Accepted: 10/13/2022] [Indexed: 06/16/2023]
Abstract
Perfluorooctanesulfonate acid (PFOS) is a typical persistent organic pollutant that widely exists in the environment. To clarify the toxic effects and mechanisms of PFOS and to find effective intervention strategies have been attracted global attention. Here, we investigated the effects of PFOS on the male reproductive system and explored the potential protective role of 1α,25-dihydroxyvitamin D3 (1α,25(OH)2 D3 ). Our results showed that 1α,25(OH)2 D3 intervention significantly improved PFOS-induced sperm quality decline and testicular damage. Moreover, 1α,25(OH)2 D3 aggrandized the total antioxidant capacity. Furthermore, after PFOS exposure, the transcription factor nuclear factor erythroid-related factor 2 (Nrf2) was adaptively increased together with its target genes, such as HO-1, NQO1, and SOD2. Meanwhile, 1α,25(OH)2 D3 ameliorated PFOS-induced augment of Nrf2 and target genes. These findings indicated that 1α,25(OH)2 D3 might attenuate PFOS-induced reproductive injury in male mice via Nrf2-mediated oxidative stress.
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Affiliation(s)
- Yongchao Liang
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Jingjing Lu
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Wenjie Yi
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Ming Cai
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Weiqiang Shi
- Department of Pathology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Bingyan Li
- Department of Nutrition and Food Hygiene, Medical College of Soochow University, Suzhou, China
| | - Zengli Zhang
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, Suzhou, China
| | - Fei Jiang
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, Suzhou, China
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Mao F, Zheng X, Wong NK, Yi W, Song J, Fu S, Xiang Z, Xiao S, Bao Y, Yu Z, Zhang Y. Hippo dictates signaling for cellular homeostasis and immune defense in Crassostrea hongkongensis hemocytes. Front Immunol 2023; 14:1173796. [PMID: 37168852 PMCID: PMC10164948 DOI: 10.3389/fimmu.2023.1173796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 04/11/2023] [Indexed: 05/13/2023] Open
Abstract
Introduction The Hippo signaling pathway is an evolutionarily conserved signaling cascade that plays a crucial role in regulating cell proliferation, differentiation, and apoptosis. It has been shown to be a key regulator of cell fate and cellular homeostasis in various immune processes. Despite its well-established functions in vertebrate immunity, its roles in marine invertebrate immunity remain poorly understood. Therefore, our present work provides fresh mechanistic insights into how the Hippo pathway orchestrates hemocytic functions in Crassostrea hongkongensis, with implications for studies on its major forms and modifications in animal evolution. Method The complete set of Hippo pathway genes, including SAV1, MOB1, LATS, YAP/TAZ, TEAD, and MST, were identified from the C. hongkongensis genome. Quantitative PCR assays were conducted to examine the mRNA expression levels of these genes in different tissues and the levels of these genes in hemocytes before and after bacterial challenges. The study also examined the crosstalk between the Hippo pathway and other immune pathways, such as the AP-1 and p53-dependent p21 signaling cascades. RNA interference was used to knock down MST and TEAD, and MST is a core orchestrator of non-canonical Hippo signaling, to investigate its impact on phagocytosis and bacterial clearance in hemocytes. Result The results demonstrated that members of the Hippo pathway were highly expressed in hemocytes, with their expression levels significantly increasing following bacterial challenges. Crosstalk between the Hippo pathway and other immune pathways triggered hemocytic apoptosis, which functioned similarly to the canonical Mst-Lats-Yap signaling pathway in Drosophila and mammals. Knocking down MST resulted in increased phagocytosis and boosted the efficiency of bacterial clearance in hemocytes, presumably due to mobilized antioxidant transcription by Nrf for maintaining immune homeostasis. Discussion This study provides novel insights into the regulatory mechanisms underlying the Hippo pathway in immune responses of C. hongkongensis hemocytes. The study highlights the importance of the Hippo pathway in maintaining immune homeostasis and orchestrating hemocytic functions in oysters. Moreover, this study demonstrates the divergence of the Hippo pathway's roles in marine invertebrate immunity from mammalian observations, indicating the need for further comparative studies across species. These findings have significant implications for future research aimed at elucidating the evolutionary trajectory and functional diversity of the Hippo signaling pathway in animal evolution.
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Affiliation(s)
- Fan Mao
- Chinese Academy of Science Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
| | - Xiaoying Zheng
- School of Marine Sciences, Ningbo University, Ningbo, China
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - Nai-Kei Wong
- Department of Pharmacology, Shantou University Medical College, Shantou, China
| | - Wenjie Yi
- Chinese Academy of Science Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
| | - Jingchen Song
- Chinese Academy of Science Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
- Department of Pharmacology, Shantou University Medical College, Shantou, China
| | - Shiwei Fu
- Chinese Academy of Science Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
- Department of Pharmacology, Shantou University Medical College, Shantou, China
| | - Zhiming Xiang
- Chinese Academy of Science Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
| | - Shu Xiao
- Chinese Academy of Science Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
| | - Yongbo Bao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, China
| | - Ziniu Yu
- Chinese Academy of Science Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
- *Correspondence: Ziniu Yu, ; Yang Zhang,
| | - Yang Zhang
- Chinese Academy of Science Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, China
- *Correspondence: Ziniu Yu, ; Yang Zhang,
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Li J, Liu S, Zhang Y, Huang Q, Zhang H, OuYang J, Mao F, Fan H, Yi W, Dong M, Xu A, Huang S. Two novel mollusk short-form ApeC-containing proteins act as pattern recognition proteins for peptidoglycan. Front Immunol 2022; 13:971883. [PMID: 36275759 PMCID: PMC9585378 DOI: 10.3389/fimmu.2022.971883] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/08/2022] [Indexed: 11/18/2022] Open
Abstract
The Apextrin C-terminal (ApeC) domain is a new protein domain largely specific to aquatic invertebrates. In amphioxus, a short-form ApeC-containing protein (ACP) family is capable of binding peptidoglycan (PGN) and agglutinating bacteria via its ApeC domain. However, the functions of ApeC in other phyla remain unknown. Here we examined 130 ACPs from gastropods and bivalves, the first and second biggest mollusk classes. They were classified into nine groups based on their phylogenetics and architectures, including three groups of short-form ACPs, one group of apextrins and two groups of ACPs of complex architectures. No groups have orthologs in other phyla and only four groups have members in both gastropods and bivalves, suggesting that mollusk ACPs are highly diversified. We selected one bivalve ACP (CgACP1; from the oyster Crossostrea gigas) and one gastropod ACP (BgACP1; from the snail Biomphalaria glabrata) for functional experiments. Both are highly-expressed, secreted short-form ACPs and hence comparable to the amphioxus ACPs previously reported. We found that recombinant CgACP1 and BgACP1 bound with yeasts and several bacteria with different affinities. They also agglutinated these microbes, but showed no inhibiting or killing effects. Further analyses show that both ACPs had high affinities to the Lys-type PGN from S. aureus but weak or no affinities to the DAP-type PGN from Bacillus subtilis. Both recombinant ACPs displayed weak or no affinities to other microbial cell wall components, including lipopolysaccharide (LPS), lipoteichoic acid (LTA), zymosan A, chitin, chitosan and cellulose, as well as to several PGN moieties, including muramyl dipeptide (MDP), N-acetylglucosamine (GlcNAc) and N-acetylmuramic acid (MurNAc). Besides, CgACP1 had the highest expression in the gill and could be greatly up-regulated quickly after bacterial challenge. This is reminiscent of the amphioxus ACP1/2 which serve as essential mucus lectins in the gill. Taken together, the current findings from mollusk and amphioxus ACPs suggest several basic common traits for the ApeC domains, including the high affinity to Lys-type PGN, the bacterial binding and agglutinating capacity, and the role as mucus proteins to protect the mucosal surface.
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Affiliation(s)
- Jin Li
- Key Laboratory of Biocontrol, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Shumin Liu
- Key Laboratory of Biocontrol, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yang Zhang
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Qiuyun Huang
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Hao Zhang
- Key Laboratory of Biocontrol, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jihua OuYang
- Key Laboratory of Biocontrol, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Fan Mao
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Huiping Fan
- Key Laboratory of Biocontrol, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Wenjie Yi
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Meiling Dong
- Key Laboratory of Biocontrol, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Anlong Xu
- Key Laboratory of Biocontrol, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
- *Correspondence: Anlong Xu, ; Shengfeng Huang,
| | - Shengfeng Huang
- Key Laboratory of Biocontrol, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Key Laboratory of Pharmaceutical Functional Genes, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- *Correspondence: Anlong Xu, ; Shengfeng Huang,
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Liu Z, Zhou Y, Feng WN, Chen MY, Han G, Zou GR, Yang S, He Y, Zou X, Tang J, Zhang L, Cui L, Chen H, Li G, Jiang S, Gao J, Xiao L, Zhang Q, Yi W, Huang C. LBA64 Olanzapine, an alternative to dexamethasone for preventing nausea and vomiting induced by cisplatin-based doublet highly emetogenic chemotherapy: A non-inferiority, prospective, multi-centered, randomized, controlled, phase III clinical trial. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.2145] [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: 11/26/2022] Open
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Mao F, Bao Y, Wong NK, Huang M, Liu K, Zhang X, Yang Z, Yi W, Shu X, Xiang Z, Yu Z, Zhang Y. Large-Scale Plasma Peptidomic Profiling Reveals a Novel, Nontoxic, Crassostrea hongkongensis-Derived Antimicrobial Peptide against Foodborne Pathogens. Mar Drugs 2021; 19:420. [PMID: 34436258 PMCID: PMC8399951 DOI: 10.3390/md19080420] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 07/22/2021] [Accepted: 07/22/2021] [Indexed: 11/16/2022] Open
Abstract
Antimicrobial peptides are a fundamental component of mollusks' defense systems, though they remain a thinly investigated subject. Here, infection by Vibrio parahemolyticus triggered a significant increase in antimicrobial activity in oyster plasma. By using PBS-challenged oysters as a control, plasma peptides from immunologically challenged oysters were subjected to peptidomic profiling and in silico data mining to identify bioactive peptides. Thirty-five identified plasma peptides were up-regulated post infection, among which, six up-regulated peptides (URPs) showed a relatively high positive charge. URP20 was validated with significant antibacterial activity. Virtually, URP20 triggered aggregation of bacterial cells, accompanied by their membrane permeabilization. Interestingly, URP20 was found to be active against Gram-positive and Gram-negative foodborne pathogens as well as Candida albicans, with no cytotoxicity to mammalian cells and mice. Our study provides the first large-scale plasma peptidomic dataset that identifies novel bioactive peptides in marine mollusks. Further exploration of peptide diversity in marine invertebrates should prove a fruitful pursuit for designing novel AMPs with broad applications.
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Affiliation(s)
- Fan Mao
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Yongbo Bao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China;
| | - Nai-Kei Wong
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Department of Pharmacology, Medical College, Shantou University, Shantou 515063, China
| | - Minwei Huang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Kunna Liu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Xiangyu Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Zhuo Yang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Wenjie Yi
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Xiao Shu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Zhiming Xiang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Ziniu Yu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
| | - Yang Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China; (F.M.); (N.-K.W.); (M.H.); (K.L.); (X.Z.); (Z.Y.); (W.Y.); (X.S.); (Z.X.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 510301, China
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8
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He Y, Tang C, Liu X, Yu F, Wei Q, Pan R, Yi W, Gao J, Xu Z, Duan J, Su H. Effect modification of the association between diurnal temperature range and hospitalisations for ischaemic stroke by temperature in Hefei, China. Public Health 2021; 194:208-215. [PMID: 33962098 DOI: 10.1016/j.puhe.2020.12.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 10/17/2020] [Accepted: 12/30/2020] [Indexed: 01/21/2023]
Abstract
OBJECTIVES Diurnal temperature range (DTR) is an important indicator of global climate change. Many epidemiological studies have reported the associations between high DTR and human health. This study investigated the association between DTR and hospitalisations for ischaemic stroke in Hefei, China. STUDY DESIGN This is an ecological study. METHODS Data of daily hospital admissions for ischaemic stroke and meteorological variables from 1 January 2009 to 31 December 2017 were collected in Hefei, China. A generalised additive model combined with distributed lag non-linear model was used to quantify the effects of DTR on ischaemic stroke. The interactive effect between DTR and temperature was explored with a non-parametric bivariate response surface model. RESULTS High DTR was associated with hospitalisations for ischaemic stroke. The adverse effect of extremely high DTR (99th percentile [17.1 °C]) occurred after 8 days (relative risk [RR] = 1.021, 95% confidence interval [CI] = 1.002, 1.041) and the maximum effect appeared after 12 days (RR = 1.029, 95% CI = 1.011, 1.046). The overall trend of the effect of DTR on ischaemic stroke was decreasing. In addition, there was a significant interactive effect of high DTR and low temperature on ischaemic stroke. CONCLUSIONS This study suggests that the impact of high DTR should be considered when formulating targeted measures to prevent ischaemic stroke, especially for those days with high DTR and low mean temperature.
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Affiliation(s)
- Y He
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - C Tang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - X Liu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - F Yu
- Anhui Provincial Hospital, China
| | - Q Wei
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - R Pan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - W Yi
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - J Gao
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - Z Xu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - J Duan
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China
| | - H Su
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, China.
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Mao F, Liu K, Wong NK, Zhang X, Yi W, Xiang Z, Xiao S, Yu Z, Zhang Y. Virulence of Vibrio alginolyticus Accentuates Apoptosis and Immune Rigor in the Oyster Crassostrea hongkongensis. Front Immunol 2021; 12:746017. [PMID: 34621277 PMCID: PMC8490866 DOI: 10.3389/fimmu.2021.746017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 08/31/2021] [Indexed: 02/05/2023] Open
Abstract
Vibrio species are ubiquitously distributed in marine environments, with important implications for emerging infectious diseases. However, relatively little is known about defensive strategies deployed by hosts against Vibrio pathogens of distinct virulence traits. Being an ecologically relevant host, the oyster Crassostrea hongkongensis can serve as an excellent model for elucidating mechanisms underlying host-Vibrio interactions. We generated a Vibrio alginolyticus mutant strain (V. alginolyticus△vscC ) with attenuated virulence by knocking out the vscC encoding gene, a core component of type III secretion system (T3SS), which led to starkly reduced apoptotic rates in hemocyte hosts compared to the V. alginolyticusWT control. In comparative proteomics, it was revealed that distinct immune responses arose upon encounter with V. alginolyticus strains of different virulence. Quite strikingly, the peroxisomal and apoptotic pathways are activated by V. alginolyticusWT infection, whereas phagocytosis and cell adhesion were enhanced in V. alginolyticus△vscC infection. Results for functional studies further show that V. alginolyticusWT strain stimulated respiratory bursts to produce excess superoxide (O2•-) and hydrogen peroxide (H2O2) in oysters, which induced apoptosis regulated by p53 target protein (p53tp). Simultaneously, a drop in sGC content balanced off cGMP accumulation in hemocytes and repressed the occurrence of apoptosis to a certain extent during V. alginolyticus△vscC infection. We have thus provided the first direct evidence for a mechanistic link between virulence of Vibrio spp. and its immunomodulation effects on apoptosis in the oyster. Collectively, we conclude that adaptive responses in host defenses are partially determined by pathogen virulence, in order to safeguard efficiency and timeliness in bacterial clearance.
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Affiliation(s)
- Fan Mao
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Kunna Liu
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Nai-Kei Wong
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Department of Pharmacology, Shantou University Medical College, Shantou, China
| | - Xiangyu Zhang
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Wenjie Yi
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Zhiming Xiang
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Shu Xiao
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Ziniu Yu
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- *Correspondence: Yang Zhang, ; Ziniu Yu,
| | - Yang Zhang
- Chinese Academy of Sciences Key Laboratory of Tropical Marine Bio-resources and Ecology and Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Science, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
- *Correspondence: Yang Zhang, ; Ziniu Yu,
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10
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Yang C, Liu T, Yi W, Chen X, Niu B. Identifying expertise through semantic modeling: A modified BBPSO algorithm for the reviewer assignment problem. Appl Soft Comput 2020. [DOI: 10.1016/j.asoc.2020.106483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Yuan W, Liu J, Yi W, Liang L, Zhu Y, Chen X. Boron and nitrogen co-doped double-layered mesopore-rich hollow carbon microspheres as high-performance electrodes for supercapacitors. J Colloid Interface Sci 2020; 573:232-240. [DOI: 10.1016/j.jcis.2020.03.126] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/26/2020] [Accepted: 03/31/2020] [Indexed: 10/24/2022]
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12
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Yang TY, Yi W, Wen J, Gan CY, Yang YC, Dai M. [Therapeutic effect of Jin Long capsule combined with neoadjuvant chemotherapy on invasive breast cancer and the expression change of multidrug resistance proteins]. Zhonghua Zhong Liu Za Zhi 2019; 41:118-123. [PMID: 30862141 DOI: 10.3760/cma.j.issn.0253-3766.2019.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the therapeutic effect of Jin Long Capsule (JLC) combined with neoadjuvant chemotherapy on the invasive breast cancer, and to explore the mechanism of JLC in inhibiting multidrug resistance of breast cancer. Methods: 200 patients were divided into experimental group and control group (100 cases per group). The control group used TEC regimen for neoadjuvant chemotherapy. And the experimental group was treated with TEC regimen combined with oral JLC. According to the Miller & Payne grading system (MP), the efficacy of neoadjuvant chemotherapy was evaluated based on histopathological changes of breast cancer after neoadjuvant chemotherapy. Adverse effect was evaluated according to the classification criteria of the National Cancer Institute of the United States-The Common Terminology Criteria for Adverse Events (CTCAE) version 3.0. The expression of P-glycoprotein (P-gp), glutathione thiol transferase (GST)-π and topoisomerase Ⅱα (TopoⅡα) in breast cancer tissues before and after neoadjuvant chemotherapy were detected by immunohistochemical staining. Results: There were 83 effective cases (83%) in the experimental group, which was higher than that in the control group (65.0%, P<0.05). The incidence of leukopenia, gastrointestinal reactions and alopecia in grade 3 to 4 of the experimental group were lower than those of the control group (all P<0.05). The positive rates of P-gp, GST-π and TopoⅡα expression in the control group were 65.0% (65/100), 61.0% (61/100) and 69.0% (69/100), respectively, and they were 80.6% (75/93), 78.5% (73/93) and 37.6% (35/93) after chemotherapy. The positive rates of P-gp and GST-π expression were significantly higher than those before chemotherapy (both P<0.05), whereas the positive rate of TopoⅡα expression was significantly lower than that before chemotherapy (P<0.05). In the experimental group, the positive rates of P-gp, GST-π and TopoⅡα expression before chemotherapy were 62.0% (62/100), 63.0% (63/100) and 69.0% (69/100), respectively, while after chemotherapy, they were 68.2% (60/88), 67.0% (59/88) and 63.6% (56/88). There was no significant difference in the positive rates and expression intensity of P-gp, GST-π and TopoⅡα before and after the chemotherapy (P>0.05). Conclusion: Jin Long Capsule (JLC) can inhibit multidrug resistance, improve the efficacy of neoadjuvant chemotherapy, and reduce adverse reactions of breast cancer.
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Affiliation(s)
- T Y Yang
- Department of Pathology, Guizhou Provincial People's Hospital, Guiyang 550002, China
| | - W Yi
- Department of Pathology, Guizhou Provincial People's Hospital, Guiyang 550002, China
| | - J Wen
- Department of Pathology, Guizhou Provincial People's Hospital, Guiyang 550002, China
| | - C Y Gan
- Department of Pathology, Guizhou Provincial People's Hospital, Guiyang 550002, China
| | - Y C Yang
- Department of Pathology, Guizhou Provincial People's Hospital, Guiyang 550002, China
| | - M Dai
- Department of Breast Surgery, Guizhou Provincial People's Hospital, Guiyang 550002, China
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13
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Yi W, Li MH, Xie Y, Wu J, Hu YH, Zhang D, Zhang Y, Cao WH. Prospective cohort study on the efficacy and safety of telbivudine used throughout pregnancy in blocking mother-to-child transmission of hepatitis B virus. J Viral Hepat 2017; 24 Suppl 1:49-56. [PMID: 29082650 DOI: 10.1111/jvh.12788] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 07/27/2017] [Accepted: 09/07/2017] [Indexed: 12/12/2022]
Abstract
Women with chronic hepatitis B should maintain nucleotide analogue treatment to prevent disease progression during pregnancy. The aim of this study was to prospectively evaluate the efficacy and safety of telbivudine used throughout pregnancy for preventing hepatitis B virus (HBV) mother-to-child transmission (MTCT). From January 2012 to June 2014, women who were receiving telbivudine therapy and became pregnant were enrolled in group A at 28 weeks of gestation. Pregnant women with an HBV DNA level >106 IU/mL were enrolled in either group B (telbivudine started at 28 weeks of gestation) or group C (control group without treatment). MTCT was defined as infants who were positive for serum hepatitis B surface antigen at 7 months after birth. There were 41, 179 and 177 pregnant women (397 infants) enrolled in groups A, B and C, respectively. The HBV DNA load at 28 weeks of gestation and delivery was 1.50 ± 0.62 vs 1.45 ± 0.61, 8.05 ± 0.37 vs 4.24 ± 0.89 and 7.94 ± 0.62 vs 7.86 ± 0.73 log10 IU/mL in groups A, B and C, respectively. The rate of MTCT in group C was 4.60%, which was significantly higher than the rates in groups A and B (0% and 0.6%, respectively) (P = .043). The difference between group A and group B was not significant. The rates of neonatal congenital abnormalities were 2.4%, 0.6% and 2.3% in groups A, B and C, respectively, and there were no significant differences (P = .140). Telbivudine used throughout pregnancy may be safe and effective for mothers and infants, but it may not enhance the efficacy of an HBV MTCT block compared with treatment starting at 28 weeks of gestation (NCT02253485).
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Affiliation(s)
- W Yi
- Department of Gynecology and Obstetrics, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - M-H Li
- Liver Diseases Center, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Y Xie
- Liver Diseases Center, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - J Wu
- Beijing Center for Disease Prevention and Control, Beijing, China
| | - Y-H Hu
- Department of Gynecology and Obstetrics, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - D Zhang
- Liver Diseases Center, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Y Zhang
- Liver Diseases Center, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - W-H Cao
- Liver Diseases Center, Beijing Ditan Hospital, Capital Medical University, Beijing, China
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14
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Xihua L, Lei Z, Chaoping H, Shui zhen Z, Yi W. A comprehensive database of duchenne and becker muscular dystrophy patients in children's hospital of fudan university. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3057] [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: 10/18/2022]
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15
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Xie Y, Li G, Chen M, Guo X, Tang L, Luo X, Wang S, Yi W, Dai L, Wang J. Mutation screening of 10 cancer susceptibility genes in unselected breast cancer patients. Clin Genet 2017; 93:41-51. [PMID: 28580595 DOI: 10.1111/cge.13063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 01/20/2017] [Revised: 05/02/2017] [Accepted: 05/24/2017] [Indexed: 12/11/2022]
Abstract
Variants of cancer susceptibility genes other than BRCA1/2 have been proved to be associated with increased risks of breast cancer. This study was performed to investigate the spectrum and prevalence of mutations in 10 cancer susceptibility genes in paired tumor/normal tissues of 292 unselected Chinese breast cancer patients. We performed an analysis of germline and somatic variants in ATM, CDH1, CHEK2, ESR1, GATA3, MAP3K1, MSH2, PALB2, RB1 and STK11 genes by integrating microfluidic PCR-based target enrichment and next-generation sequencing technologies. In total, 3 germline and 25 somatic deleterious mutations were found among 27 patients (9.25%), and 17 of them were novel mutations. Most deleterious mutations were prevalent in luminal A invasive breast cancer (P = .014). We also observed 83 variants of uncertain significance (VUS) in 100 patients (34.25%), 23 of which were predicted to be deleterious by in silico prediction programs (MetaSVM and MetaLR). VUS carriers had higher positive rate of lymph node metastasis than non-carriers (P = .008) and were predominantly present in ER+ tumors (P = .018). Our findings would enhance the understanding of the molecular mechanisms of breast cancer in Chinese population.
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Affiliation(s)
- Y Xie
- The State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, China.,Department of Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, China
| | - G Li
- The State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, China
| | - M Chen
- Sanway Gene Technology Inc., Changsha, China
| | - X Guo
- Sanway Gene Technology Inc., Changsha, China
| | - L Tang
- Department of Breast Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - X Luo
- Sanway Gene Technology Inc., Changsha, China
| | - S Wang
- Department of Breast Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - W Yi
- Department of Breast and Thyroid Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - L Dai
- Sanway Gene Technology Inc., Changsha, China.,Research Center for Technologies in Nucleic Acid-Based Diagnostics, Changsha, China.,Research Center for Technologies in Nucleic Acid-Based Diagnostics and Therapeutics, Changsha, China
| | - J Wang
- The State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, China
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16
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Hunag P, Wu Q, Xie QM, Yi W. [Roles of PI3K/AKT pathway in aldose reductase in promoting expression of fibronectin in mesangial cell]. Zhonghua Bing Li Xue Za Zhi 2017; 46:336-337. [PMID: 28468042 DOI: 10.3760/cma.j.issn.0529-5807.2017.05.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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Pan CQ, Yi W, Liu M, Wan G, Hu YH, Zhou MF. Lamivudine therapy during the second vs the third trimester for preventing transmission of chronic hepatitis B. J Viral Hepat 2017; 24:246-252. [PMID: 28025872 DOI: 10.1111/jvh.12640] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 05/05/2016] [Accepted: 10/15/2016] [Indexed: 01/29/2023]
Abstract
There are little data on the timing of initiating lamivudine therapy for preventing transmission of hepatitis B in highly viremic mothers. Between May 2008 and January 2015, we retrospectively enrolled mothers with HBV DNA >6 log10 copies/mL who received lamivudine during pregnancy, and we compared them to untreated mothers. The primary measurement was the vertical transmission rate. The secondary outcomes were the mothers' and infants' safety. Among 249 consecutive mothers enrolled, 66 and 94 received lamivudine during the second and third trimesters, respectively, and 89 were untreated. At delivery, maternal mean HBV DNA levels were significantly lower in mothers who received lamivudine (4.45 log10; vs 7.16 log10 copies/mL; P<.001). Lamivudine treatment was well tolerated. However, early treatment during the second trimester did not significantly increase the percentage of mothers achieving HBV DNA levels of <6 log10 copies/mL compared to those treated during the third trimester (98.5% vs 94.7%; P=.40). At the age of 28 weeks, the vertical transmission rates were significantly lower in the lamivudine-treated mothers vs in the untreated mothers (0% [0/160] vs 5.62% [5/89]; P<.001), but the rates were similar when comparing the two subgroups treated with lamivudine (0% [0/66] vs 0% [0/94], P>.05). The birth defect rates and mothers' and infants' adverse events were similar among the groups. Lamivudine treatment initiated in the second or third trimester for mothers with HBV DNA levels below 9 log10 copies/mL was equally safe and effective in preventing vertical transmission. Thus, lamivudine should be deferred until the third trimester to minimize foetal exposure and drug resistance.
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Affiliation(s)
- C Q Pan
- Division of Gastroenterology and Hepatology, Department of Medicine, NYU Langone Medical Center, New York University School of Medicine, New York, NY, USA
| | - W Yi
- Department of Obstetrics and Gynecology, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - M Liu
- Department of Obstetrics and Gynecology, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - G Wan
- Department of Biostatistics, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Y-H Hu
- Department of Obstetrics and Gynecology, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - M-F Zhou
- Department of Obstetrics and Gynecology, Beijing Ditan Hospital, Capital Medical University, Beijing, China
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Li J, Yi W, Jiang P, Sun R, Li T. Effects of ambroxol hydrochloride on concentrations of paclitaxel and carboplatin in lung cancer patients at different administration times. Cell Mol Biol (Noisy-le-grand) 2016; 62:85-89. [DOI: 10.14715/cmb/2016.62.13.15] [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] [Received: 12/28/2016] [Accepted: 12/28/2016] [Indexed: 11/18/2022]
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19
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Zhu C, Peng G, Yi W, Song H, Liu F, Liu X. The Influenza A Virus Non-structural Protein NS1 Upregulates The Expression of Collagen Triple Helix Repeat Containing 1 Protein. Scand J Immunol 2016; 84:365-369. [PMID: 27718266 DOI: 10.1111/sji.12496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 10/04/2016] [Indexed: 12/31/2022]
Abstract
Influenza A virus (IAV) infection induces a strong immune response and regulates the expression of many host proteins. The collagen triple helix repeat containing 1 (CTHRC1) protein is a secreted protein that exhibits increased expression during the viral infection process. However, the regulatory function of IAV on CTHRC1 expression is obscure. In this study, we investigated the effect of IAV on CTHRC1 expression and its regulatory mechanism. A total of 106 serum specimens from healthy people and 80 serum specimens from patients infected with IAV were collected. The CTHRC1 levels in the sera from the IVA patients and healthy individuals were measured using an enzyme-linked immunosorbent assay (ELISA), and the differences were statistically analysed. A549 cells were infected with the IAV or delNS1 virus. Additionally, A549 cells were cotransfected with a eukaryotic non-structural NS1 protein gene expression plasmid and the CTHRC1 gene promoter reporter plasmid (pCTHRC1-Luc), and, the luciferase activities were assessed. The CTHRC1 mRNA and protein expression were detected using reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting, respectively. The serum CTHRC1 level was significantly higher in the IAV patients than in the healthy individuals. IAV upregulated the CTHRC1 mRNA and protein expression. The non-structural NS1 protein specifically activated CTHRC1 gene promoter activity and upregulated CTHRC1 mRNA and protein expression. The activation function had a dose-dependent effect, indicating that influenza virus upregulated CTHRC1 expression through its NS1 protein.
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Affiliation(s)
- C Zhu
- The State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - G Peng
- The State Key Laboratory of Agricultural Microbiology, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - W Yi
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - H Song
- Department of Clinical Laboratory, Gongli Hospital, Second Military Medicine University, Shanghai, China
| | - F Liu
- The State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan, Hubei, China
| | - X Liu
- Department of Clinical Laboratory, Gongli Hospital, Second Military Medicine University, Shanghai, China
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Yang Y, Lv J, Jiang S, Ma Z, Wang D, Hu W, Deng C, Fan C, Di S, Sun Y, Yi W. The emerging role of Toll-like receptor 4 in myocardial inflammation. Cell Death Dis 2016; 7:e2234. [PMID: 27228349 PMCID: PMC4917669 DOI: 10.1038/cddis.2016.140] [Citation(s) in RCA: 221] [Impact Index Per Article: 27.6] [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: 01/02/2016] [Revised: 03/25/2016] [Accepted: 04/12/2016] [Indexed: 12/17/2022]
Abstract
Toll-like receptors (TLRs) are a family of pattern recognition receptors involved in cardiovascular diseases. Notably, numerous studies have demonstrated that TLR4 activates the expression of several of pro-inflammatory cytokine genes that play pivotal roles in myocardial inflammation, particularly myocarditis, myocardial infarction, ischemia-reperfusion injury, and heart failure. In addition, TLR4 is an emerging target for anti-inflammatory therapies. Given the significance of TLR4, it would be useful to summarize the current literature on the molecular mechanisms and roles of TLR4 in myocardial inflammation. Thus, in this review, we first introduce the basic knowledge of the TLR4 gene and describe the activation and signaling pathways of TLR4 in myocardial inflammation. Moreover, we highlight the recent progress of research on the involvement of TLR4 in myocardial inflammation. The information reviewed here may be useful to further experimental research and to increase the potential of TLR4 as a therapeutic target.
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Affiliation(s)
- Y Yang
- Department of Cardiovascular Surgery, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an 710032, China.,Department of Thoracic and Cardiovascular Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, Jiangsu 210008, China.,Department of Biomedical Engineering, The Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, China
| | - J Lv
- Department of Biomedical Engineering, The Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, China
| | - S Jiang
- Department of Aerospace Medicine, The Fourth Military Medical University, Xi'an 710032, China
| | - Z Ma
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, 1 Xinsi Road, Xi'an 710038, China
| | - D Wang
- Department of Thoracic and Cardiovascular Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing, Jiangsu 210008, China
| | - W Hu
- Department of Biomedical Engineering, The Fourth Military Medical University, 169 Changle West Road, Xi'an 710032, China
| | - C Deng
- Department of Cardiovascular Surgery, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an 710032, China
| | - C Fan
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, 1 Xinsi Road, Xi'an 710038, China
| | - S Di
- Department of Thoracic Surgery, Tangdu Hospital, The Fourth Military Medical University, 1 Xinsi Road, Xi'an 710038, China
| | - Y Sun
- Department of Geriatrics, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an 710032, China
| | - W Yi
- Department of Cardiovascular Surgery, Xijing Hospital, The Fourth Military Medical University, 127 Changle West Road, Xi'an 710032, China
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Sun JC, He F, Yi W, Wan MH, Li R, Wei X, Wu R, Niu DL. High expression of HIF-2α and its anti-radiotherapy effect in lung cancer stem cells. Genet Mol Res 2015; 14:18110-20. [PMID: 26782458 DOI: 10.4238/2015.december.22.37] [Citation(s) in RCA: 12] [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
Hypoxia-inducible factor-2 alpha (HIF-2α) has been shown to regulate cell stemness, although the expression and effects of HIF-2α in lung cancer stem cells remained unclear. This study investigated HIF-2α expression in lung cancer stem cells, as well as the relationship between HIF-2α expression and radioresistance in lung cancer cells. Stem-like cells (CD133(+)) in the non-small-cell lung cancer cell line A549 were enriched by serum-free culture conditions, and CD133(+) cells were sorted via fluorescence-activated cell sorting. A549 cells were treated with middle-infrared radiation, and the level of HIF-2α expression was determined by a quantitative polymerase chain reaction assay and western blot analysis. The level of HIF-2α expression in tissue sections from 50 cases of clinically confirmed non-small-cell lung cancer was determined via immunohistochemical analysis, and its correlation with prognosis after radiotherapy was analyzed. HIF-2α levels in CD133(+) cells were significantly higher than those in CD133(-) cells (P = 0.032). However, after radiation treatment, these levels were significantly upregulated in both CD133(+) and CD133(-) cells (P = 0.031 and P = 0.023, respectively). After irradiation, the proportions of apoptotic, dead, and autophagic CD133(+) A549 cells were considerably lower than those of CD133(-) A549 cells (P < 0.05). Furthermore, the recovery of carcinoembryonic antigen to pre-radiation levels was more rapid in lung cancer patients with high levels of HIF-2α expression, and these patients had shorter survival times (P = 0.018). HIF-2α is highly expressed in lung cancer stem cells, which may lead to radioresistance. In conclusion, HIF-2α is a potential prognostic marker for lung cancer.
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Affiliation(s)
- J C Sun
- Department of Radiation Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - F He
- Department of Radiation Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - W Yi
- Department of Radiation Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - M H Wan
- Department of Radiation Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - R Li
- Department of Radiation Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - X Wei
- Department of Radiation Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - R Wu
- Department of Radiation Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - D L Niu
- Department of Radiation Oncology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Li X, Lin Z, Duan Y, Shu X, Jin A, Min S, Yi W. Repair of large segmental bone defects in rabbits using BMP and FGF composite xenogeneic bone. Genet Mol Res 2015; 14:6395-400. [DOI: 10.4238/2015.june.11.15] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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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23
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Lau W, Yuan Y, Yi W, Sun Y, Wang Y, Ma X. 107 A Clinically Important Post-Translational Modification of CTRP9: Proteolytic Cleavage of CTRP9 Yields its Globular Domain, Which Activates AMPK. Ann Emerg Med 2014. [DOI: 10.1016/j.annemergmed.2014.07.133] [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: 11/30/2022]
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24
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Ren ZA, Yang J, Lu W, Yi W, Che GC, Dong XL, Sun LL, Zhao ZX. Superconductivity at 52 K in iron based F doped layered quaternary compound Pr[O1–xFx]FeAs. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/143307508x333686] [Citation(s) in RCA: 376] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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25
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Liu M, Cai H, Yi W. Safety of telbivudine treatment for chronic hepatitis B for the entire pregnancy. J Viral Hepat 2013; 20 Suppl 1:65-70. [PMID: 23458527 DOI: 10.1111/jvh.12066] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [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: 06/12/2012] [Accepted: 12/16/2012] [Indexed: 12/18/2022]
Abstract
Orally administered nucleus(t)ide analogues (NA) have brought about a simple, safe and effective therapeutic approach for chronic hepatitis B (CHB). However, treatment duration is long and some female patients become pregnant during treatment. In recent years, there have been gradually increasing reports on the safety of telbivudine (LdT) treatment for chronic hepatitis B virus (HBV) infection in the third trimester of pregnancy to block mother-to-infant transmission (MTIT) of HBV; however, the safety of LdT treatment for chronic HBV infection for the entire pregnancy has not been reported. The aim of the present study was to evaluate the safety of LdT treatment for chronic HBV infection for the entire pregnancy and provide a reference for HBV-infected fertile women on how to block MTIT of HBV. Eighty-six pregnant women who received LdT treatment either before or in early pregnancy were enrolled in the study. Adverse events were prospectively observed for the entire pregnancy and perinatal period, and short-term and long-term follow-up of infants was conducted, monitoring the abnormalities of infants and blocking rate of MTIT with LdT treatment. Eighty-six pregnant women treated with LdT had a total of 89 pregnancies: 6 (6.7%) had early embryonic death or spontaneous abortion, 1 (1.1%) had ectopic pregnancy and three had a second pregnancy after initial abortion. Fifty-one mothers completed pregnancy: one had induction of labour at 24 weeks of pregnancy for cleft lip and palate of the foetus and 50 delivered 52 full-term live infants. One infant had right ear accessories, and the total occurrence of congenital abnormality was 3.8%. Thirty-nine infants were followed up for more than 6 months and completed all examinations for MTIT. None of the infants were HBsAg positive, resulting in a 100% success rate of blocking MTIT. All mothers maintained good liver function during the third trimester of pregnancy; 86% maintained complete virological response (HBV DNA <500 copies/mL) prior to delivery, and none developed progression of liver disease. Factors leading to increased adverse effects and drug resistance were not found. LdT treatment is safe and effective in chronic HBV-infected pregnant mothers for the entire pregnancy.
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Affiliation(s)
- M Liu
- Department of Obstetrics and Gynecology, Beijing Ditan Hospital affiliated to Capital Medical University, Beijing, China
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26
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Stakhursky V, Stanley T, Yi W. SU-E-T-380: Evaluation of Patient Specific Machine Delivery Performance Based on Analysis of Trajectory Log Files. Med Phys 2012. [DOI: 10.1118/1.4735467] [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: 11/07/2022] Open
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27
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Shi L, Shi L, Tao Y, Lin K, Liu S, Yu L, Yang Z, Yi W, Huang X, Sun H, Chu J, Yao Y. Distribution of killer cell immunoglobulin-like receptor genes and combinations with HLA-C ligands in an isolated Han population in southwest China. ACTA ACUST UNITED AC 2011; 78:60-4. [DOI: 10.1111/j.1399-0039.2011.01683.x] [Citation(s) in RCA: 5] [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: 11/27/2022]
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28
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Shi L, Shi L, Yao YF, Matsushita M, Yu L, Huang XQ, Yi W, Oka T, Tokunaga K, Chu JY. Genetic link among Hani, Bulang and other Southeast Asian populations: evidence from HLA -A, -B, -C, -DRB1 genes and haplotypes distribution. Int J Immunogenet 2011; 37:467-75. [PMID: 20637045 DOI: 10.1111/j.1744-313x.2010.00949.x] [Citation(s) in RCA: 19] [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] [Indexed: 12/01/2022]
Abstract
Human leucocyte antigen (HLA) genetic characteristic of different ethnic minorities would be useful for tracing the origin of modern human HLA matching in transplantation and disease associations. In this study, we reported HLA-A, -B, -C and -DRB1 alleles and haplotypes in the Bulang and Hani populations of southwestern China using a high-resolution polymerase chain reaction-Luminex (PCR-Luminex) typing method. A total of nine HLA-A, 22 HLA-B, 13 HLA-C and 18 HLA-DRB1 alleles were identified in the Bulang population, and 11 HLA-A, 25 HLA-B, 14 HLA-C and 19 HLA-DRB1 alleles were in the Hani population. Compared with other populations, the predominant A*1101-B*1502-DRB1*1202 haplotype in the Bulang and Hani populations was also common in Jinuo, Wa, Dai, Maonan and Vietnamese populations. The distribution of HLA genes indicate that Bulang and Hani populations belong to the Southeast Asia group and they have maintained their original genetic characteristics and kept a long genetic distance from other populations owing to founder effects and subsequent geographic isolation. In addition, the close relationship among ethnic groups in Yunnan province and the Thai and Vietnamese populations were confirmed, whereas the Mon-Kmer-speaking populations shared other common HLA alleles and haplotypes compared with other linguistic groups.
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Affiliation(s)
- L Shi
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming, China
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Diehl S, Yi W, Daley AJ, Zoller P. Dissipation-induced d-wave pairing of fermionic atoms in an optical lattice. Phys Rev Lett 2010; 105:227001. [PMID: 21231414 DOI: 10.1103/physrevlett.105.227001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Indexed: 05/30/2023]
Abstract
We show how dissipative dynamics can give rise to pairing for two-component fermions on a lattice. In particular, we construct a parent Liouvillian operator so that a BCS-type state of a given symmetry, e.g., a d-wave state, is reached for arbitrary initial states in the absence of conservative forces. The system-bath couplings describe single-particle, number-conserving and quasilocal processes. The pairing mechanism crucially relies on Fermi statistics. We show how such Liouvillians can be realized via reservoir engineering with cold atoms representing a driven dissipative dynamics.
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Affiliation(s)
- S Diehl
- Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria
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30
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Zhou M, Lei Z, Li H, Yi W, Zhang Z, Guo A. NMDA receptors-dependent plasticity in the phototaxis preference behavior induced by visual deprivation in young and adult flies. Genes, Brain and Behavior 2010; 9:325-34. [DOI: 10.1111/j.1601-183x.2009.00562.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Yi W, Ballard D, Hayhoe M. Modeling eye-hand movement sequences in natural tasks. J Vis 2010. [DOI: 10.1167/6.6.490] [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: 11/24/2022] Open
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32
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Han YJ, Chan YH, Yi W, Daley AJ, Diehl S, Zoller P, Duan LM. Stabilization of the p-wave superfluid state in an optical lattice. Phys Rev Lett 2009; 103:070404. [PMID: 19792623 DOI: 10.1103/physrevlett.103.070404] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2009] [Revised: 07/17/2009] [Indexed: 05/28/2023]
Abstract
It is hard to stabilize the p-wave superfluid state of cold atomic gas in free space due to inelastic collisional losses. We consider the p-wave Feshbach resonance in an optical lattice, and show that it is possible to have a stable p-wave superfluid state where the multiatom collisional loss is suppressed through the quantum Zeno effect. We derive the effective Hamiltonian for this system, and calculate its phase diagram in a one-dimensional optical lattice. The results show rich phase transitions between the p-wave superfluid state and different types of insulator states induced either by interaction or by dissipation.
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Affiliation(s)
- Y-J Han
- Department of Physics and MCTP, University of Michigan, Ann Arbor, Michigan 48109, USA
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33
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Yao Y, Shi L, Shi L, Matsushita M, Yu L, Lin K, Tao Y, Huang X, Yi W, Oka T, Tokunaga K, Chu J. Distribution of HLA-A, -B, -Cw, and -DRB1 alleles and haplotypes in an isolated Han population in Southwest China. ACTA ACUST UNITED AC 2009; 73:561-8. [PMID: 19493233 DOI: 10.1111/j.1399-0039.2009.01237.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In this study, polymorphisms of human leukocyte antigen (HLA) class I (A, B, and Cw) and class II (DRB1) loci were analyzed in an isolated Han population living in Fengyandong in the Yunnan province of Southwest China (FYDH) using a high-resolution polymerase chain reaction-Luminex typing method. A total of 13 A, 26 B, 15 Cw, and 23 DRB1 alleles of HLA were found in FYDH. The frequencies of A*1101, A*0207, A*2402, B*4601, B*1502, Cw*0102, Cw*0801, DRB1*0901, and DRB1*1202 were >10%. The following haplotypes were common with frequencies >5%: three A-B, four Cw-B, two B-DRB1, two A-B-DRB1, three A-B-Cw, two B-Cw-DRB1, and two A-B-Cw-DRB1 phylogenetic tree and multidimensional scaling analysis based on HLA-A, -B, and -DRB1 allele frequencies of 18 Han populations suggested that FYDH was an isolated Han population, but the analytic result also provided a suggestion that FYDH was genetically related to Chinese Southern Han. According to the characteristics of the HLA allele and haplotype distributions and significantly reduced allelic and haplotypic diversity in FYDH, we deduced that genetic drift and/or selection and subsequent geographic isolation had influenced the distribution characteristics of the HLA gene in FYDH. In addition, significantly reduced allelic and haplotypic diversity in FYDH makes it an ideal homogenous population and very useful model for future investigations of issues related to immunogenetic diseases in the Han population.
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Affiliation(s)
- Y Yao
- Department of Medical Genetics, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming, China
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Dhami H, Fritz CE, Gankin B, Pak SH, Yi W, Seya MJ, Raffa RB, Nagar S. The chemokine system and CCR5 antagonists: potential in HIV treatment and other novel therapies. J Clin Pharm Ther 2009; 34:147-60. [PMID: 19250135 DOI: 10.1111/j.1365-2710.2008.00978.x] [Citation(s) in RCA: 19] [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: 01/24/2023]
Abstract
Since the recognition of human acquired immune deficiency syndrome, numerous classes of pharmacologic therapeutics have been developed to manage the disease. Current therapy includes co-administration of combinations of drugs classified by their mechanism of action as 'transcriptase inhibitors', 'protease inhibitors', 'integrase inhibitors' and the more recent 'fusion inhibitors'. This review focuses on the chemokine system and the recognition of chemokine receptors as targets for anti-human immunodeficiency virus (HIV) therapy. The FDA-approved chemokine (C-C motif) receptor 5 (CCR5) antagonist maraviroc (Selzentry) is discussed in detail, along with another compound vicriviroc, currently in clinical trials. The mechanism of action, pharmacokinetics, toxicity and current status of research on CCR5 antagonists is described. Further, potential therapeutic uses of these agents other than anti-HIV therapy are discussed.
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Affiliation(s)
- H Dhami
- Temple University School of Pharmacy, Philadelphia, PA, USA
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35
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Yao Y, Shi L, Shi L, Lin K, Yu L, Sun H, Huang X, Tao Y, Yi W, Liu S, Chu J. The association between HLA-A, -B alleles and major histocompatibility complex class I polymorphic Alu insertions in four populations in China. ACTA ACUST UNITED AC 2009; 73:575-81. [DOI: 10.1111/j.1399-0039.2009.01251.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [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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36
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Shalish I, Seryogin G, Yi W, Bao JM, Zimmler MA, Likovich E, Bell DC, Capasso F, Narayanamurti V. Epitaxial Catalyst-Free Growth of InN Nanorods on c-Plane Sapphire. Nanoscale Res Lett 2009; 4:532-537. [PMID: 20596436 PMCID: PMC2893868 DOI: 10.1007/s11671-009-9276-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2008] [Accepted: 02/09/2009] [Indexed: 05/29/2023]
Abstract
We report observation of catalyst-free hydride vapor phase epitaxy growth of InN nanorods. Characterization of the nanorods with transmission electron microscopy, and X-ray diffraction show that the nanorods are stoichiometric 2H-InN single crystals growing in the [0001] orientation. The InN rods are uniform, showing very little variation in both diameter and length. Surprisingly, the rods show clear epitaxial relations with the c-plane sapphire substrate, despite about 29% of lattice mismatch. Comparing catalyst-free with Ni-catalyzed growth, the only difference observed is in the density of nucleation sites, suggesting that Ni does not work like the typical vapor-liquid-solid catalyst, but rather functions as a nucleation promoter by catalyzing the decomposition of ammonia. No conclusive photoluminescence was observed from single nanorods, while integrating over a large area showed weak wide emissions centered at 0.78 and at 1.9 eV.
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Affiliation(s)
- I Shalish
- Harvard University, Cambridge, MA, 02138, USA
- Ben Gurion University, Beer Sheva, Israel
| | - G Seryogin
- Harvard University, Cambridge, MA, 02138, USA
| | - W Yi
- Harvard University, Cambridge, MA, 02138, USA
| | - JM Bao
- Harvard University, Cambridge, MA, 02138, USA
- University of Houston, Houston, TX, 77004, USA
| | - MA Zimmler
- Harvard University, Cambridge, MA, 02138, USA
| | - E Likovich
- Harvard University, Cambridge, MA, 02138, USA
| | - DC Bell
- Harvard University, Cambridge, MA, 02138, USA
| | - F Capasso
- Harvard University, Cambridge, MA, 02138, USA
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Zhu JH, Chen R, Yi W, Cantin GT, Fearns C, Yang Y, Yates JR, Lee JD. Protein tyrosine phosphatase PTPN13 negatively regulates Her2/ErbB2 malignant signaling. Oncogene 2007; 27:2525-31. [DOI: 10.1038/sj.onc.1210922] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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38
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Choi JM, Choi BH, Seo JW, Sohn RH, Ryu MS, Yi W, Park KS. A system for ubiquitous health monitoring in the bedroom via a Bluetooth network and wireless LAN. Conf Proc IEEE Eng Med Biol Soc 2007; 2004:3362-5. [PMID: 17271003 DOI: 10.1109/iembs.2004.1403944] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Advances in information technology have enabled ubiquitous health monitoring at home, which is particularly useful for patients, who have to live alone. We have focused on the automatic and unobtrusive measurement of biomedical signals and activities of patients. We have constructed wireless communication networks in order to transfer data. The networks consist of Bluetooth and Wireless Local Area Network (WLAN). In this paper, we present the concept of a ubiquitous-Bedroom (u-Bedroom) which is a part of a ubiquitous-House (u-House) and we present our systems for ubiquitous health monitoring.
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Affiliation(s)
- J M Choi
- Interdisciplinary Program in Biomedical Engineering, Seoul National University, Seoul, Korea
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39
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Yi W, Duan LM. Detecting the breached-pair phase in a polarized ultracold Fermi gas. Phys Rev Lett 2006; 97:120401. [PMID: 17025940 DOI: 10.1103/physrevlett.97.120401] [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: 05/22/2006] [Indexed: 05/12/2023]
Abstract
We propose a method for the experimental detection of a new quantum phase, the breached-pair state, in a strongly interacting ultracold Fermi gas with population imbalance. We show that through the time-of-flight Raman imaging, the presence of such a phase can be unambiguously determined with a measurement of the momentum-space phase separation of the minority spin component. To guide the experimental efforts, the momentum-space density profiles are calculated under typical experimental conditions.
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Affiliation(s)
- W Yi
- FOCUS center and MCTP, Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
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Amezcua CA, MacDonald HR, Lum CA, Yi W, Muderspach LI, Roman LD, Felix JC. Endometrial cancer patients have a significant risk of harboring isolated tumor cells in histologically negative lymph nodes. Int J Gynecol Cancer 2006; 16:1336-41. [PMID: 16803526 DOI: 10.1111/j.1525-1438.2006.00528.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
In this study, we examine the prevalence of finding isolated tumor cells (ITCs) in negative lymph nodes of endometrial cancer patients using immunohistochemistry. Seventy-six endometrial cancer patients with lymph nodes histologically negative for metastatic disease were examined. Nodal tissue sections were stained with anticytokeratin antibodies AE-1 and CAM 5.2. Nodes with single or groups of cells (two to four cells) < or =0.2 mm and showing cytokeratin reactivity were positive for ITCs. Findings were compared to features of the primary tumor and patient outcome. ITCs were present in 31 of 1712 lymph nodes. Fifteen (19.7%) patients had ITC-positive nodes. ITCs involved only pelvic nodes in nine cases, only para-aortic nodes in five cases, and pelvic and para-aortic in one case. Tumor in adnexa was the only pathologic feature associated with nodal ITCs (P= 0.0485). All 15 patients with nodal ITCs were alive at follow-up. One (6.7%) patient suffered recurrent disease but was alive at last encounter. Disease recurred in 5 (8.8%) of 57 patients without nodal ITCs. Two are alive without disease, two alive with disease, and one died from her cancer. In summary, a significant proportion of endometrial cancer patients have ITCs detected by immunohistochemistry in histologically negative regional lymph nodes.
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Affiliation(s)
- C A Amezcua
- Department of Pathology, University of Southern California Keck School of Medicine, 1240 N. Mission Road, Los Angeles, CA 90033, USA
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Amezcua CA, Macdonald HR, Lum CA, Yi W, Muderspach LI, Roman LD, Felix JC. Endometrial cancer patients have a significant risk of harboring isolated tumor cells in histologically negative lymph nodes. Int J Gynecol Cancer 2006. [DOI: 10.1136/ijgc-00009577-200605000-00058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
In this study, we examine the prevalence of finding isolated tumor cells (ITCs) in negative lymph nodes of endometrial cancer patients using immunohistochemistry. Seventy-six endometrial cancer patients with lymph nodes histologically negative for metastatic disease were examined. Nodal tissue sections were stained with anticytokeratin antibodies AE-1 and CAM 5.2. Nodes with single or groups of cells (two to four cells) ≤0.2 mm and showing cytokeratin reactivity were positive for ITCs. Findings were compared to features of the primary tumor and patient outcome. ITCs were present in 31 of 1712 lymph nodes. Fifteen (19.7%) patients had ITC-positive nodes. ITCs involved only pelvic nodes in nine cases, only para-aortic nodes in five cases, and pelvic and para-aortic in one case. Tumor in adnexa was the only pathologic feature associated with nodal ITCs (P = 0.0485). All 15 patients with nodal ITCs were alive at follow-up. One (6.7%) patient suffered recurrent disease but was alive at last encounter. Disease recurred in 5 (8.8%) of 57 patients without nodal ITCs. Two are alive without disease, two alive with disease, and one died from her cancer. In summary, a significant proportion of endometrial cancer patients have ITCs detected by immunohistochemistry in histologically negative regional lymph nodes.
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Yi W, Smith D, Constine L. Optic nerve and chiasmatic tolerance to radiotherapy. Int J Radiat Oncol Biol Phys 2004. [DOI: 10.1016/j.ijrobp.2004.07.288] [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: 11/16/2022]
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43
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Dangcong P, Yi W, Hao W, Xiaochang W. Biological denitrification in a sequencing batch reactor. Water Sci Technol 2004; 50:67-72. [PMID: 15656297] [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: 05/24/2023]
Abstract
Biological denitrification was studied in an SBR to investigate the performance. The experimental results showed that granular sludge with high activity and good settling ability can be developed smoothly in thereactor. With the granular sludge, high nitrate loading rate (0.48 kg NO3-N dm(-3) d(-1)) and removal efficiency (more than 99%) can be achieved. Scanning electronic microscope examination showed that only rod-shape bacteria existed on and within the granules, which confirmed indirectly that filamentous bacteria do not utilize nitrate and nitrite as electron acceptors. SBR is an alternative and effective technology for biological denitrification.
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Affiliation(s)
- P Dangcong
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, People's Republic of China.
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44
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Yi W, Lu L, Hu H, Pan ZW, Xie SS. Tunneling into multiwalled carbon nanotubes: coulomb blockade and the Fano resonance. Phys Rev Lett 2003; 91:076801. [PMID: 12935039 DOI: 10.1103/physrevlett.91.076801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2003] [Indexed: 05/24/2023]
Abstract
Tunneling spectroscopy measurements of single tunnel junctions formed between multiwalled carbon nanotubes (MWNTs) and a normal metal are reported. Intrinsic Coulomb interactions in the MWNTs give rise to a strong zero-bias suppression of a tunneling density of states that can be fitted numerically to the environmental quantum-fluctuation theory. An asymmetric conductance anomaly near zero bias is found at low temperatures and interpreted as Fano resonance in the strong tunneling regime.
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Affiliation(s)
- W Yi
- Institute of Physics, Chinese Academy of Sciences, Beijing 100080, People's Republic of China
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45
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Mang'era KO, Liu G, Yi W, Zhang Y, Liu N, Gupta S, Rusckowski M, Hnatowich DJ. Initial investigations of 99mTc-labeled morpholinos for radiopharmaceutical applications. Eur J Nucl Med 2001; 28:1682-9. [PMID: 11702111 DOI: 10.1007/s002590100637] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2001] [Indexed: 10/27/2022]
Abstract
This laboratory is evaluating phosphorothioate deoxyribonucleic acids (DNAs) and peptide nucleic acids (PNAs) for a variety of nuclear medicine applications. Morpholinos (MORFs) are a new class of oligomers with a nuclease-resistant, nonionic and water-soluble phosphorodiamidate backbone. We now report on the in vitro and in vivo properties of MORFs labeled with technetium-99m. Both 15-mer and 18-mer MORFs were obtained, each with a primary amine attached to the 3' equivalent end via a three-carbon beta-alanine linker. The amine was used to conjugate with NHS-MAG3 for 99mTc radiolabeling. By surface plasmon resonance at room temperature, the association rate constant for hybridization of the 18-mer MORF to its complementary oligomer (cMORF) was equivalent to that of DNAs and PNAs of comparable length. Hybridization of 99mTc-MORF in vitro to free cMORF, to a cMORF polymer and to cMORF beads was nearly quantitative under a variety of conditions. Kinetic studies in vitro at room temperature showed rapid (2-5 min) and nearly quantitative (90%) binding to cMORF beads. Using size-exclusion high-performance liquid chromatography, the stability of the 99mTc-MORF was found to be greater than 85% over 24 h in 37 degrees C serum with minimal protein binding. In normal mice, the 99mTc-MORF showed rapid pharmacokinetics, with only 21% and 8% remaining in the whole body at 3 and 24 h post administration, respectively. In vivo targeting with 99mTc-MORF of cMORF beads in one thigh of normal mice compared to control beads in the other thigh showed target/control thigh ratios of 2-10 between 3 and 24 h. These results demonstrate that MORF oligomers are capable of in vivo hybridization. Their properties of hybridization affinity and kinetics and their in vivo stability and pharmacokinetics make them suitable subjects for in vivo studies.
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Affiliation(s)
- K O Mang'era
- Division of Nuclear Medicine, Department of Radiology, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655, USA
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46
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Yang J, Deng XY, Gu HH, Xia LQ, Yi W, Cao Y. [Epstein-Barr virus latent membrane protein 1 induces the telomerase activity in human nasopharyngeal epithelial cells]. Shi Yan Sheng Wu Xue Bao 2001; 34:207-11. [PMID: 12549222] [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: 02/28/2023]
Abstract
Telomerase activation has been linked to cell immortalization in vitro and tumorigenicity in vivo. In this study, for the first, we reported that Epstein-Barr virus activated the telomerase activity of human nasopharyngeal epithelial cells in the early stage of immortalization as tested by the PCR-ELISA. The telomerase activity in nasopharyngeal epithelial cells was only observed in presenescent cells. It was implicated that Epstein-Barr virus induced the escape of nasopharyngeal epithelial cells from senescence via the activation of telomerase. We further showed that telomerase activation in infected cells was dependent on the protein level of latent membrane protein 1 (LMP1) encoded by Epstein-Barr virus using a Tetracycline regulatory cell line expressing LMP1, pTet-on-LMP1-HNE2. The activity of telomerase in nasopharyngeal cells was decreased when the protein level of LMP1 was blocked by antisense LMP1 plasmid DNA. And the activity of telmerase was also related to the carboxyl terminus of LMP1. It was implicated that the ability of Epstein-Barr virus to suppress senescence is associated with telomerase activation by LMP1.
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Affiliation(s)
- J Yang
- Cancer Research Institute, Hunan Medical University, Changsha Hunan, 410078
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Yin L, Liao W, Deng X, Tang M, Gu H, Li X, Yi W, Cao Y. LMP1 activates NF-kappa B via degradation of I kappa B alpha in nasopharyngeal carcinoma cells. Chin Med J (Engl) 2001; 114:718-22. [PMID: 11780335] [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: 02/23/2023] Open
Abstract
OBJECTIVE To elucidate the mechanisms by which Epstein-Barr virus-encoded latent membrane protein 1 activates NF-kappa B in nasopharyngeal carcinoma cells. METHODS A tetracycline-regulated LMP1-expressing nasopharyngeal carcinoma cell line, Tet-on-LMP1-HNE2, was used as the cell model. The kinetics of the expression of proteins, including LMP1, I kappa B alpha and I kappa B beta, was analyzed by Western blotting. The subcellular localization of NF-kappa B (p65) was detected by indirect immunofluorescence assay. The NF-kappa B transactivity was studied by transient transfection and reporter gene assay. RESULTS I kappa B alpha was phosphorylated and degraded after the inducible expression of LMP1, although the total protein levels remained stable. The steady-state level of total I kappa B beta protein may have resulted from the initiation of an autoregulation loop after the activation of NF-kappa B. No change in the I kappa B beta level was detected. NF-kappa B (p65) was translocated from the cytoplasm to the nucleus following degradation of I kappa B alpha. After the introduction of the dominant-negative mutant of I kappa B alpha (Del 71) into Tet-on-LMP1-HNE2 cells, both nuclear translocation and transactivation of NF-kappa B induced by LMP1 was significantly inhibited. CONCLUSIONS The results indicated that in nasopharyngeal carcinoma cells, LMP1 activated NF-kappa B via phosphorylation and degradation of I kappa B alpha, but not I kappa B beta. The dominant-negative mutant of I kappa B alpha (Del 71) could completely inhibit both the nuclear translocation and transactivation of NF-kappa B induced by LMP1.
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Affiliation(s)
- L Yin
- Cancer Research Institute, Hunan Medical University, Changsha 410078, China
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48
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Gao Q, Shen C, Sun Y, Yi W. [A preliminary study on the organic carbon weathering fluxes in Beijiang River drainage]. Huan Jing Ke Xue 2001; 22:12-8. [PMID: 11432058] [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: 02/20/2023]
Abstract
Riverine water samples were collected from Hekou hydrometric station of Beijiang River in five hydrological seasons. The samples were analyzed of their organic carbon and total suspended substance, which demonstrated that the concentrations of particulate organic carbon (POC) changed synchronically with the concentrations of total suspended substance (TSS) in riverine water. The correlation between the concentrations of TSS and dissolved organic carbon (DOC), however, is sometimes positive and sometimes negative, and the correlation is not so notable as that between TSS and POC. With the concentration of total suspended substances increasing, the quality partition of organic carbon in total suspended substance decreased in a logarithm tendency. The transportation of organic carbon, especially of DOC, mainly takes place in flood peak periods. The weathering flux of organic carbon in Beijiang River drainage basin is about 10.01 x 10(6) g.km-2.a-1, which is constituted by 6.54 x 10(6) g.km-2.a-1 of POC and 3.47 x 10(6) g.km-2.a-1 of DOC. This pattern of organic carbon weathering flux in Beijiang drainage basin is consistent with that of most of the monsoon drainage basins.
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Affiliation(s)
- Q Gao
- Department of Geography, Zhongshan University, Guangzhou 510275, China.
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49
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Mole SE, Zhong NA, Sarpong A, Logan WP, Hofmann S, Yi W, Franken PF, van Diggelen OP, Breuning MH, Moroziewicz D, Ju W, Salonen T, Holmberg V, Järvelä I, Taschner PE. New mutations in the neuronal ceroid lipofuscinosis genes. Eur J Paediatr Neurol 2001; 5 Suppl A:7-10. [PMID: 11589012 DOI: 10.1053/ejpn.2000.0427] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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: 11/11/2022]
Abstract
Thirty-eight mutations and seven polymorphisms have recently been reported in the genes underlying the neuronal ceroid lipofuscinoses (NCLs) including 11 new mutations described here. A total of 114 mutations and 28 polymorphisms have now been described in the five human genes identified which cause NCL. Thirty-eight mutations are recorded for CLN1/PPT; 40 for CLN2/TTP-1, 31 for CLN3, four for CLN5, one for CLN8. Two mutations have been described in animal genes (cln8/mnd, CTSD). All mutations in NCL genes are contained in the NCL Mutation Database (http://www.ucl.ac.uk/NCL).
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Affiliation(s)
- S E Mole
- Department of Paediatrics and Child Health, University College London, Rayne Institute, 5 University Street, London WC1E 6JJ, UK.
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Abstract
Sex determination is controlled by global regulatory genes, such as tra-1 in Caenorhabditis elegans, Sex lethal in Drosophila, or Sry in mammals. How these genes coordinate sexual differentiation throughout the body is a key unanswered question. tra-1 encodes a zinc finger transcription factor, TRA-1A, that regulates, directly or indirectly, all genes required for sexual development. mab-3 (male abnormal 3), acts downstream of tra-1 and is known to be required for sexual differentiation of at least two tissues. mab-3 directly regulates yolk protein transcription in the intestine and specifies male sense organ differentiation in the nervous system. It encodes a transcription factor related to the products of the Drosophila sexual regulator doublesex (dsx), which also regulates yolk protein transcription and male sense-organ differentiation. The similarities between mab-3 and dsx led us to suggest that some aspects of sex determination may be evolutionarily conserved. Here we find that mab-3 is also required for expression of male-specific genes in sensory neurons of the head and tail and for male interaction with hermaphrodites. These roles in male development and behavior suggest further functional similarity to dsx. In male sensory ray differentiation we find that MAB-3 acts synergistically with LIN-32, a neurogenic bHLH transcription factor. Expression of LIN-32 is spatially restricted by the combined action of the Hox gene mab-5 and the hairy homolog lin-22, while MAB-3 is expressed throughout the lateral hypodermis. Finally, we find that mab-3 transcription is directly regulated in the intestine by TRA-1A, providing a molecular link between the global regulatory pathway and terminal sexual differentiation.
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Affiliation(s)
- W Yi
- Biochemistry, Molecular Biology and Biophysics Graduate Program, University of Minnesota, Minneapolis, MN 55455, USA
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