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Xiao SQ, Wen TZ, Chen XY, Chen HY, Li Z, He ZC, Luo T, Tang R, Fu WJ, Cao MF, Chen L, Niu Q, Wang S, Lan Y, Ge J, Li QR, Guo HT, Wang YX, Ping YF, Shen H, Wang Y, Ding YQ, Bian XW, Yao XH. Autopsy analysis reveals increased macrophage infiltration and cell apoptosis in COVID-19 patients with severe pulmonary fibrosis. Pathol Res Pract 2023; 252:154920. [PMID: 37948998 DOI: 10.1016/j.prp.2023.154920] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 10/26/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
Clinical data indicates that SARS-CoV-2 infection-induced respiratory failure is a fatal condition for severe COVID-19 patients. However, the pathological alterations of different types of respiratory failure remained unknown for severe COVID-19 patients. This study aims to evaluate whether there are differences in the performance of various types of respiratory failure in severe COVID-19 patients and investigate the pathological basis for these differences. The lung tissue sections of severe COVID-19 patients were assessed for the degree of injury and immune responses. Transcriptome data were used to analyze the molecular basis in severe COVID-19 patients. Severe COVID-19 patients with combined oxygenation and ventilatory failure presented more severe pulmonary fibrosis, airway obstruction, and prolonged disease course. The number of M2 macrophages increased with the degree of fibrosis in patients, suggesting that it may be closely related to the development of pulmonary fibrosis. The co-existence of pro-inflammatory and anti-inflammatory cytokines in the pulmonary environment could also participate in the progression of pulmonary fibrosis. Furthermore, the increased apoptosis in the lungs of COVID-19 patients with severe pulmonary fibrosis may represent a critical factor linking sustained inflammatory responses to fibrosis. Our findings indicate that during the extended phase of COVID-19, antifibrotic and antiapoptotic treatments should be considered in conjunction with the progression of the disease.
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Affiliation(s)
- Shi-Qi Xiao
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Tian-Zi Wen
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Xin-Yu Chen
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - He-Yuan Chen
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Zhuang Li
- Department of Neurology, Armed Corps Police Hospital of Chongqing, Chongqing, China
| | - Zhi-Cheng He
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Tao Luo
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Rui Tang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Wen-Juan Fu
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Mian-Fu Cao
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Lu Chen
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Qin Niu
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Shuai Wang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Yang Lan
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Jia Ge
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Qing-Rui Li
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Hai-Tao Guo
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Yan-Xia Wang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Yi-Fang Ping
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Hong Shen
- Department of Pathology, Southern Medical University, Guangzhou, China
| | - Yan Wang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Yan-Qing Ding
- Department of Pathology, Southern Medical University, Guangzhou, China
| | - Xiu-Wu Bian
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China
| | - Xiao-Hong Yao
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), and Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing, China.
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Huang WH, Ding SL, Zhao XY, Li K, Guo HT, Zhang MZ, Gu Q. Collagen for neural tissue engineering: Materials, strategies, and challenges. Mater Today Bio 2023; 20:100639. [PMID: 37197743 PMCID: PMC10183670 DOI: 10.1016/j.mtbio.2023.100639] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/19/2023] Open
Abstract
Neural tissue engineering (NTE) has made remarkable strides in recent years and holds great promise for treating several devastating neurological disorders. Selecting optimal scaffolding material is crucial for NET design strategies that enable neural and non-neural cell differentiation and axonal growth. Collagen is extensively employed in NTE applications due to the inherent resistance of the nervous system against regeneration, functionalized with neurotrophic factors, antagonists of neural growth inhibitors, and other neural growth-promoting agents. Recent advancements in integrating collagen with manufacturing strategies, such as scaffolding, electrospinning, and 3D bioprinting, provide localized trophic support, guide cell alignment, and protect neural cells from immune activity. This review categorises and analyses collagen-based processing techniques investigated for neural-specific applications, highlighting their strengths and weaknesses in repair, regeneration, and recovery. We also evaluate the potential prospects and challenges of using collagen-based biomaterials in NTE. Overall, this review offers a comprehensive and systematic framework for the rational evaluation and applications of collagen in NTE.
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Affiliation(s)
- Wen-Hui Huang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, PR China
- University of Chinese Academy of Sciences, Huairou District, Beijing, 101499, PR China
| | - Sheng-Long Ding
- Department of Foot and Ankle Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, PR China
| | - Xi-Yuan Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, PR China
- University of Chinese Academy of Sciences, Huairou District, Beijing, 101499, PR China
| | - Kai Li
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, PR China
| | - Hai-Tao Guo
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, PR China
- University of Chinese Academy of Sciences, Huairou District, Beijing, 101499, PR China
| | - Ming-Zhu Zhang
- Department of Foot and Ankle Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, PR China
- Corresponding author.
| | - Qi Gu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, PR China
- Beijing Institute for Stem Cell and Regenerative Medicine, Chaoyang District, Beijing, 100101, PR China
- University of Chinese Academy of Sciences, Huairou District, Beijing, 101499, PR China
- Corresponding author. Institute of Zoology, Chinese Academy of Sciences, No. 5 of Courtyard 1, Beichen West Road, Chaoyang District, Beijing 100101, PR China.
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Ding SL, Zhao XY, Xiong W, Ji LF, Jia MX, Liu YY, Guo HT, Qu F, Cui W, Gu Q, Zhang MZ. Cartilage Lacuna-Inspired Microcarriers Drive Hyaline Neocartilage Regeneration. Adv Mater 2023:e2212114. [PMID: 36876459 DOI: 10.1002/adma.202212114] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/14/2023] [Indexed: 06/01/2023]
Abstract
Cartilage equivalents from hydrogels containing chondrocytes exhibit excellent potential in hyaline cartilage regeneration, yet current approaches have limited success at reconstituting the architecture to culture nondifferentiated chondrocytes in vitro. In this study, specially designed lacunar hyaluronic acid microcarriers (LHAMCs) with mechanotransductive conditions that rapidly form stable hyaluronic acid (HA) N-hydroxy succinimide ester (NHS-ester) are reported. Specifically, carboxyl-functionalized HA is linked to collagen type I via amide-crosslinking, and gas foaming produced by ammonium bicarbonate forms concave surface of the microcarriers. The temporal 3D culture of chondrocytes on LHAMCs uniquely remodels the extracellular matrix to induce hyaline cartilaginous microtissue regeneration and prevents an anaerobic-to-aerobic metabolism transition in response to the geometric constraints. Furthermore, by inhibiting the canonical Wnt pathway, LHAMCs prevent β-catenin translocation to the nucleus, repressing chondrocyte dedifferentiation. Additionally, the subcutaneous implantation model indicates that LHAMCs display favorable cytocompatibility and drive robust hyaline chondrocyte-derived neocartilage formation. These findings reveal a novel strategy for regulating chondrocyte dedifferentiation. The current study paves the way for a better understanding of geometrical insight clues into mechanotransduction interaction in regulating cell fate, opening new avenues for advancing tissue engineering.
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Affiliation(s)
- Sheng-Long Ding
- Department of Foot and Ankle Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, P. R. China
| | - Xi-Yuan Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, P. R.China
- Beijing Institute for Stem Cell and Regenerative Medicine, Chaoyang District, Beijing, 100101, P. R. China
- University of Chinese Academy of Sciences, Huairou District, Beijing, 101499, P. R. China
| | - Wei Xiong
- Department of Foot and Ankle Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, P. R. China
| | - Lin-Feng Ji
- Department of Foot and Ankle Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, P. R. China
| | - Min-Xuan Jia
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, P. R.China
- Beijing Institute for Stem Cell and Regenerative Medicine, Chaoyang District, Beijing, 100101, P. R. China
- University of Chinese Academy of Sciences, Huairou District, Beijing, 101499, P. R. China
| | - Yan-Yan Liu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, P. R.China
- Beijing Institute of Fashion Technology, Beijing, 100029, P. R. China
| | - Hai-Tao Guo
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, P. R.China
- Beijing Institute for Stem Cell and Regenerative Medicine, Chaoyang District, Beijing, 100101, P. R. China
- University of Chinese Academy of Sciences, Huairou District, Beijing, 101499, P. R. China
| | - Feng Qu
- Department of Foot and Ankle Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, P. R. China
| | - Wenguo Cui
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, P. R. China
| | - Qi Gu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing, 100101, P. R.China
- Beijing Institute for Stem Cell and Regenerative Medicine, Chaoyang District, Beijing, 100101, P. R. China
- University of Chinese Academy of Sciences, Huairou District, Beijing, 101499, P. R. China
| | - Ming-Zhu Zhang
- Department of Foot and Ankle Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, P. R. China
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Geng X, Li HL, Guo HT, Hu HT, Cheng QJ, Yao C, Shang K, Zhao K. [Clinical curative effect observation of double tube method in the treatment of esophagojejunostomy leakage after laparoscopic for total gastrectomy]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:627-631. [PMID: 35844127 DOI: 10.3760/cma.j.cn441530-20210806-00310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
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5
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Leng L, Ma J, Zhang PP, Xu SC, Li X, Jin Y, Cai J, Tang R, Zhao L, He ZC, Li MS, Zhang H, Zhou LR, Wu ZH, Li TR, Zhu YP, Wang YJ, Wu HB, Ping YF, Yao XH, Zhu CH, Guo HT, Tan LY, Liang ZY, Bian XW, Zhang SY. Spatial region-resolved proteome map reveals mechanism of COVID-19-associated heart injury. Cell Rep 2022; 39:110955. [PMID: 35679865 PMCID: PMC9135696 DOI: 10.1016/j.celrep.2022.110955] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/28/2022] [Accepted: 05/23/2022] [Indexed: 11/28/2022] Open
Abstract
Direct myocardial and vascular injuries due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection-driven inflammation is the leading cause of acute cardiac injury associated with coronavirus disease 2019 (COVID-19). However, in-depth knowledge of the injury characteristics of the heart affected by inflammation is lacking. In this study, using a quantitative spatial proteomics strategy that combines comparative anatomy, laser-capture microdissection, and histological examination, we establish a region-resolved proteome map of the myocardia and microvessels with obvious inflammatory cells from hearts of patients with COVID-19. A series of molecular dysfunctions of myocardia and microvessels is observed in different cardiac regions. The myocardia and microvessels of the left atrial are the most susceptible to virus infection and inflammatory storm, suggesting more attention should be paid to the lesion and treatment of these two parts. These results can guide in improving clinical treatments for cardiovascular diseases associated with COVID-19.
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Affiliation(s)
- Ling Leng
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China.
| | - Jie Ma
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Pei-Pei Zhang
- Department of Pathology, The First Hospital Affiliated to University of Science and Technology of China (USTC), Intelligent Pathology Institute, Division of Life Sciences and Medicine, USTC, Hefei, Anhui 230036, China; Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China; Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Si-Chi Xu
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xiao Li
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Ye Jin
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Jun Cai
- Department of Pathology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Rui Tang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Lei Zhao
- Department of Pathology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zhi-Cheng He
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Man-Sheng Li
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Hui Zhang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Liang-Rui Zhou
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Zhi-Hong Wu
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Tian-Ran Li
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Yun-Ping Zhu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China; Basic Medical School, Anhui Medical University, Anhui 230032, China
| | - Yu-Jie Wang
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Hai-Bo Wu
- Department of Pathology, The First Hospital Affiliated to University of Science and Technology of China (USTC), Intelligent Pathology Institute, Division of Life Sciences and Medicine, USTC, Hefei, Anhui 230036, China
| | - Yi-Fang Ping
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Xiao-Hong Yao
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Chu-Hong Zhu
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Hai-Tao Guo
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Le-Yong Tan
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Zhi-Yong Liang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China.
| | - Xiu-Wu Bian
- Department of Pathology, The First Hospital Affiliated to University of Science and Technology of China (USTC), Intelligent Pathology Institute, Division of Life Sciences and Medicine, USTC, Hefei, Anhui 230036, China; Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China.
| | - Shu-Yang Zhang
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China; Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China.
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He ZC, Liu Q, Yang KD, Chen C, Zhang XN, Wang WY, Zeng H, Wang B, Liu YQ, Luo M, Li L, Niu Q, Lu HM, Luo T, Yao XH, Guo HT, Ji JL, Cao MF, Shi Y, Ping YF, Bian XW. HOXA5 is amplified in glioblastoma stem cells and promotes tumor progression by transcriptionally activating PTPRZ1. Cancer Lett 2022; 533:215605. [DOI: 10.1016/j.canlet.2022.215605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 02/10/2022] [Accepted: 02/21/2022] [Indexed: 01/23/2023]
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Guo HT, Wang SS, Zhang CF, Zhang HJ, Wei MX, Wu Y, Su CX. Investigation of Factors Influencing the Fear of Cancer Recurrence in Breast Cancer Patients Using Structural Equation Modeling: A Cross-Sectional Study. Int J Clin Pract 2022; 2022:2794408. [PMID: 36545346 PMCID: PMC9747310 DOI: 10.1155/2022/2794408] [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] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 10/12/2022] [Accepted: 11/08/2022] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE This study aimed to investigate the fear of cancer recurrence (FCR) in breast cancer patients and develop a structural equation model of influencing factors to help formulate clinical intervention strategies. METHODS A convenience sample of 325 patients was surveyed using a general and disease-related data questionnaire, which combined the Fear of Progression Questionnaire-Short Form, Mishel Uncertainty in Illness Scale, Perceived Social Support Scale, and Medical Coping Modes Questionnaire. RESULTS The total score of FCR in breast cancer patients was 35.06 ± 10.83, and 53.8% of patients reached the clinical level. The structural equation model demonstrated that illness uncertainty had a direct positive impact on FCR (β = 0.275, p < 0.05), and it could have an indirect impact through social support and resignation coping methods (β = 0.254, p < 0.05). CONCLUSION The fear of cancer recurrence in breast cancer patients needs further understanding. Medical staff can reduce or buffer FCR in breast cancer patients by strengthening positive influences, such as social support, or weakening negative influences, such as illness uncertainty and resignation coping.
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Affiliation(s)
- Hai-Tao Guo
- Department of Operation, Affiliated Hospital of Hebei University, Baoding, China
| | - Shuang-Shuang Wang
- Department of Radiation Oncology, Affiliated Hospital of Hebei University, Baoding, China
| | - Chun-Fang Zhang
- Department of Administrative, Affiliated Hospital of Hebei University, Baoding, China
| | - Hong-Jie Zhang
- College of Public Health Hebei University, Baoding, China
| | - Min-Xiang Wei
- Department of Breast Surgery, Affiliated Hospital of Hebei University, Baoding, China
| | - Yu Wu
- Department of Breast Surgery, Affiliated Hospital of Hebei University, Baoding, China
| | - Chen-Xiao Su
- Department of Breast Surgery, Affiliated Hospital of Hebei University, Baoding, China
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8
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Chen YX, Sun CH, Li YK, Fei YL, Xue XM, Hou SL, Zhou YW, Jiang J, Guo HT. Complete mitogenome of Treron sphenurus (Aves, Columbiformes): the first representative from the genus Treron, genomic comparisons and phylogenetic analysis of Columbidae. Anim Biotechnol 2021; 33:1003-1013. [PMID: 33439093 DOI: 10.1080/10495398.2020.1862135] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The wedge-tailed green pigeon (Treron sphenurus) has a protective value in the evolution of the family Columbidae. In this study, the complete mitogenome of T. sphenurus from Baise City, China, which represents the first sequenced species of the genus Treron in Tribe Treronini, is reported. This was accomplished using PCR-based methods and a primer-walking sequencing strategy with genus-specific primers. The mitogenome was found to be 18,919 bp in length comprising 37 genes, including 13 protein-coding genes, two rRNA genes, 22 tRNA genes, and one control region. In terms of structure and composition, many similarities were found between the T. sphenurus and Hemiphaga novaeseelandiae (New Zealand pigeon) mitogenomes. This was further supported by phylogenetic analysis showing that T. sphenurus has a close evolutionary relationship with H. novaeseelandiae. The complete mitogenome of T. sphenurus reported here is expected to provide valuable molecular information for further studies on the phylogeny of the genus Treron and for analyses of the taxonomic status of the family Columbidae.
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Affiliation(s)
- Yun-Xia Chen
- Nanjing Forest Police College, Nanjing, China.,Key Laboratory of Wildlife Evidence Technology State Forest and Grassland Administration, Nanjing, China
| | - Cheng-He Sun
- Department of Ecology, Jinan University, Guangzhou, China
| | - Yao-Kai Li
- Department of Ecology, Jinan University, Guangzhou, China
| | - Yi-Ling Fei
- Nanjing Forest Police College, Nanjing, China.,Key Laboratory of Wildlife Evidence Technology State Forest and Grassland Administration, Nanjing, China
| | - Xiao-Ming Xue
- Nanjing Forest Police College, Nanjing, China.,Key Laboratory of Wildlife Evidence Technology State Forest and Grassland Administration, Nanjing, China
| | - Sen-Lin Hou
- Nanjing Forest Police College, Nanjing, China.,Key Laboratory of Wildlife Evidence Technology State Forest and Grassland Administration, Nanjing, China
| | - Yong-Wu Zhou
- Nanjing Forest Police College, Nanjing, China.,Key Laboratory of Wildlife Evidence Technology State Forest and Grassland Administration, Nanjing, China
| | - Jing Jiang
- Nanjing Forest Police College, Nanjing, China.,Key Laboratory of Wildlife Evidence Technology State Forest and Grassland Administration, Nanjing, China
| | - Hai-Tao Guo
- Nanjing Forest Police College, Nanjing, China.,Key Laboratory of Wildlife Evidence Technology State Forest and Grassland Administration, Nanjing, China
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9
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Yao XH, Li TY, He ZC, Ping YF, Liu HW, Yu SC, Mou HM, Wang LH, Zhang HR, Fu WJ, Luo T, Liu F, Guo QN, Chen C, Xiao HL, Guo HT, Lin S, Xiang DF, Shi Y, Pan GQ, Li QR, Huang X, Cui Y, Liu XZ, Tang W, Pan PF, Huang XQ, Ding YQ, Bian XW. [A pathological report of three COVID-19 cases by minimal invasive autopsies]. Zhonghua Bing Li Xue Za Zhi 2020; 49:411-417. [PMID: 32172546 DOI: 10.3760/cma.j.cn112151-20200312-00193] [Citation(s) in RCA: 473] [Impact Index Per Article: 118.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Objective: To investigate the pathological characteristics and the clinical significance of novel coronavirus (2019-nCoV)-infected pneumonia (termed by WHO as coronavirus disease 2019, COVID-19). Methods: Minimally invasive autopsies from lung, heart, kidney, spleen, bone marrow, liver, pancreas, stomach, intestine, thyroid and skin were performed on three patients died of novel coronavirus pneumonia in Chongqing, China. Hematoxylin and eosin staining (HE), transmission electron microcopy, and histochemical staining were performed to investigate the pathological changes of indicated organs or tissues. Immunohistochemical staining was conducted to evaluate the infiltration of immune cells as well as the expression of 2019-nCoV proteins. Real time PCR was carried out to detect the RNA of 2019-nCoV. Results: Various damages were observed in the alveolar structure, with minor serous exudation and fibrin exudation. Hyaline membrane formation was observed in some alveoli. The infiltrated immune cells in alveoli were majorly macrophages and monocytes. Moderate multinucleated giant cells, minimal lymphocytes, eosinophils and neutrophils were also observed. Most of infiltrated lymphocytes were CD4-positive T cells. Significant proliferation of type Ⅱ alveolar epithelia and focal desquamation of alveolar epithelia were also indicated. The blood vessels of alveolar septum were congested, edematous and widened, with modest infiltration of monocytes and lymphocytes. Hyaline thrombi were found in a minority of microvessels. Focal hemorrhage in lung tissue, organization of exudates in some alveolar cavities, and pulmonary interstitial fibrosis were observed. Part of the bronchial epithelia were exfoliated. Coronavirus particles in bronchial mucosal epithelia and type Ⅱ alveolar epithelia were observed under electron microscope. Immunohistochemical staining showed that part of the alveolar epithelia and macrophages were positive for 2019-nCoV antigen. Real time PCR analyses identified positive signals for 2019-nCoV nucleic acid. Decreased numbers of lymphocyte, cell degeneration and necrosis were observed in spleen. Furthermore, degeneration and necrosis of parenchymal cells, formation of hyaline thrombus in small vessels, and pathological changes of chronic diseases were observed in other organs and tissues, while no evidence of coronavirus infection was observed in these organs. Conclusions: The lungs from novel coronavirus pneumonia patients manifest significant pathological lesions, including the alveolar exudative inflammation and interstitial inflammation, alveolar epithelium proliferation and hyaline membrane formation. While the 2019-nCoV is mainly distributed in lung, the infection also involves in the damages of heart, vessels, liver, kidney and other organs. Further studies are warranted to investigate the mechanism underlying pathological changes of this disease.
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Affiliation(s)
- X H Yao
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - T Y Li
- Department of Vascular Surgery, Southwest Hospital, Third Military MedicalUniversity (Army Medical University), Chongqing 400038, China
| | - Z C He
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Y F Ping
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - H W Liu
- Chongqing Three-Gorges Central Hospital, Chongqing 404000, China
| | - S C Yu
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - H M Mou
- Chongqing Three-Gorges Central Hospital, Chongqing 404000, China
| | - L H Wang
- Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - H R Zhang
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - W J Fu
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - T Luo
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - F Liu
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Q N Guo
- Institute of Pathology, Xinqiao Hosital, Third Military Medical University (Army Medical University),Chongqing 400037, China
| | - C Chen
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - H L Xiao
- Department of Pathology, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - H T Guo
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - S Lin
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - D F Xiang
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Y Shi
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - G Q Pan
- Institute of Pathology, Xinqiao Hosital, Third Military Medical University (Army Medical University),Chongqing 400037, China
| | - Q R Li
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - X Huang
- Department of Intensive Care Medicine, Chongqing Three-Gorges Central Hospital, Chongqing 404000, China
| | - Y Cui
- Department of Intensive Care Medicine, Chongqing Three-Gorges Central Hospital, Chongqing 404000, China
| | - X Z Liu
- Infection Management Department, Chongqing Three-Gorges Central Hospital, Chongqing 404000, China
| | - W Tang
- Chongqing Three-Gorges Central Hospital, Chongqing 404000, China
| | - P F Pan
- Department of Intensive Care Medicine, Chongqing Three-Gorges Central Hospital, Chongqing 404000, China
| | - X Q Huang
- Department of Vascular Surgery, Southwest Hospital, Third Military MedicalUniversity (Army Medical University), Chongqing 400038, China
| | - Y Q Ding
- Department of Pathology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - X W Bian
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
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Yang K, Wang N, Guo HT, Wang JR, Sun HH, Sun LZ, Yue SL, Zhou JB. Effect of L-carnitine on sperm quality during liquid storage of boar semen. Asian-Australas J Anim Sci 2019; 33:1763-1769. [PMID: 32054191 PMCID: PMC7649068 DOI: 10.5713/ajas.19.0455] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 11/12/2019] [Indexed: 12/18/2022]
Abstract
Objective This study was conducted to investigate the effect of L-carnitine on the pig semen characteristics during storage. Methods Spermatozoa samples were examined for spermatozoa quality and then randomly divided into 5 groups: 0 (control), 12.5, 25, 50, and 100 mM L-carnitine. Sperm motility, plasma membrane integrity and antioxidant parameters (total reactive oxygen species, total antioxidant capacity, and malondialdehyde) were evaluated after 0, 3, 5, and 10 day cooled-storage at 17°C. Moreover, ATP content, mitochondria activity as well as sperm-binding and in vitro fertilizing ability of preserved boar sperm were also investigated. Results Supplementation with 50 mM L-carnitine could effectively maintain boar sperm quality parameters such as sperm motility and membrane integrity. Besides, we found that L-carnitine had positive effects on boar sperm quality mainly through improving antioxidant capacities and enhancing ATP content and mitochondria activity. Interestingly, by assessing the effect of L-carnitine on sperm fertility and developmental potential, we discovered that the extender containing L-carnitine could improve sperm quality and increase the number of sperms bounding to zona pellucida, without improving in vitro fertility and development potential. Conclusion These findings suggested that the proper addition of L-carnitine to the semen extender improved boar sperm quality during liquid storage at 17°C.
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Affiliation(s)
- Kang Yang
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Na Wang
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Hai-Tao Guo
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Jing-Ran Wang
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Huan-Huan Sun
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Liang-Zhen Sun
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China
| | - Shun-Li Yue
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China.,Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China
| | - Jia-Bo Zhou
- Department of Biotechnology, College of Life Science Northeast Agricultural University, Harbin 150030, China.,Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, Northeast Agricultural University, Harbin 150030, China
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Huang YL, Chen YX, Guo HT, Xu YH, Liu HY, Liu DW. The complete mitochondrial genome sequence of Yarkand hare ( Lepus yarkandensis). Mitochondrial DNA B Resour 2019; 4:3727-3728. [PMID: 33366162 PMCID: PMC7707541 DOI: 10.1080/23802359.2019.1681321] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Accepted: 10/13/2019] [Indexed: 01/23/2023] Open
Abstract
We first reported the mitochondrial genome of Lepus yarkandensis. The mitogenome of L. yarkandensis contains 17,011 base pairs. The overall base composition of complete mitogenome is 28.13% A, 27.67% T, 22.02% C, and 22.17% G, with 44.20% of the GC content. All genes exhibit the typical mitochondrial gene arrangement and transcribing directions. Phylogenetic analysis of 9 Lepus species was performed based on the sequence of cytochrome b gene using the Maximum Likelihood method in MEGA 7.0. The results suggested that L. yarkandensis is closely related to Lepus timidus. The results are helpful to future studies on molecular evolution, population genetics, and wildlife protection of L. yarkandensis.
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Affiliation(s)
- Ya-Lin Huang
- Key Laboratory of State Forest and Grassland Administration on Wildlife Evidence Technology, Nanjing Forest-police College, Nanjing, China
| | - Yun-Xia Chen
- Key Laboratory of State Forest and Grassland Administration on Wildlife Evidence Technology, Nanjing Forest-police College, Nanjing, China
| | - Hai-Tao Guo
- Criminal Science and Technology Faculty of Nanjing Forest Police College, Nanjing, China
| | - Yan-Hong Xu
- Key Laboratory of State Forest and Grassland Administration on Wildlife Evidence Technology, Nanjing Forest-police College, Nanjing, China
| | - Hong-Yi Liu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Da-Wei Liu
- Key Laboratory of State Forest and Grassland Administration on Wildlife Evidence Technology, Nanjing Forest-police College, Nanjing, China
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Wang N, Yang K, Guo HT, Wang JR, Sun HH, Wang SW, Sun M, Sun LZ, Yue SL, Zhou JB. Protective influence of rosiglitazone against time-dependent deterioration of boar spermatozoa preserved at 17°C. Reprod Domest Anim 2019; 54:1069-1077. [PMID: 31099063 DOI: 10.1111/rda.13469] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 03/16/2019] [Accepted: 05/12/2019] [Indexed: 11/28/2022]
Abstract
Spermatozoa are highly specialized cells, and energy metabolism plays an important role in modulating sperm viability and function. Rosiglitazone is an antidiabetic drug in the thiazolidinedione class that regulates metabolic flexibility and glucose uptake in various cell types, but its effects on boar sperm metabolism are unknown. In this study, we investigated the potential effect of rosiglitazone against time-dependent deterioration of boar spermatozoa during liquid preservation at 17°C. Freshly ejaculated semen was diluted with Beltsville Thawing Solution (BTS) containing different concentrations of rosiglitazone, and the motility, membrane and acrosome integrity of sperm were detected. Besides, we measured glucose uptake capacity, l-lactate production level, mitochondrial membrane potential, adenosine triphosphate (ATP) content and mitochondrial reactive oxygen species (mROS) production of sperm after boar semen had been incubated with or without rosiglitazone, iodoacetate (glycolysis inhibitor) and rotenone (electron transport chain inhibitor) for 5 days. The addition of rosiglitazone significantly enhanced sperm quality and had a strong protective effect on the sperm membrane and acrosome integrity during storage. BTS containing 50 μM rosiglitazone maintained the total motility of liquid-preserved sperm above 60% for 7 days. Rosiglitazone improved sperm quality by regulating energy metabolism manner of preserved sperm, protected the sperm mitochondrial membrane potential, enhanced sperm ATP production and in the meanwhile reduced mROS through enhancing glycolysis but not oxidative phosphorylation. The data suggested the practical feasibility of using rosiglitazone for improving boar spermatozoa quality during semen preservation.
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Affiliation(s)
- Na Wang
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Kang Yang
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Hai-Tao Guo
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Jing-Ran Wang
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Huan-Huan Sun
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Shun-Wei Wang
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Meng Sun
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Liang-Zheng Sun
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Shun-Li Yue
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
| | - Jia-Bo Zhou
- Key Laboratory of Animal Cellular and Genetics Engineering of Heilongjiang Province, College of Life Science, Northeast Agricultural University, Harbin, China
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Cui XX, Fan Q, Shi SJ, Wen WH, Chen DF, Guo HT, Xu YT, Gao F, Nie RZ, Ford HD, Tang GH, Hou CQ, Peng B. A novel near-infrared nanomaterial with high quantum efficiency and its applications in real time in vivo imaging. Nanotechnology 2018; 29:205705. [PMID: 29488904 DOI: 10.1088/1361-6528/aab2fa] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fluorescence imaging signal is severely limited by the quantum efficiency and emission wavelength. To overcome these challenges, novel NIR-emitting K5NdLi2F10 nanoparticles under NIR excitation was introduced as fluorescence imaging probe for the first time. The photostability of K5NdLi2F10 nanoparticles in the water, phosphate buffer saline, fetal bovine serum and living mice was investigated. The fluorescence signal was detected with depths of 3.5 and 2.0 cm in phantom and pork tissue, respectively. Fluorescence spectrum with a significant signal-to-background ratio of 10:1 was captured in living mice. Moreover, clear NIR images were virtualized for the living mice after intravenous injection. The imaging ability of nanoparticles in tumor-beard mice were evaluated, the enrichment of K5NdLi2F10 nanoparticles in tumor site due to the enhanced permeability and retention effect was confirmed. The systematic studies of toxicity, bio-distribution and in-vivo dynamic imaging suggest that these materials give high biocompatibility and low toxicity. These NIR-emitting nanoparticles with high quantum efficiency, high penetration and low toxicity might facilitate tumor identification in deep tissues more sensitively.
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Affiliation(s)
- X X Cui
- State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS) Xi'an Shaanxi, 710119, People's Republic of China
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Li J, Guo HT, Zhuang H, Hou WJ, Zhao YQ, Xia MF, Cai J. Transdermal Films Loaded with Tramadol for Prolonged Analgesia in Spinal Injuries. J BIOMATER TISS ENG 2017. [DOI: 10.1166/jbt.2017.1554] [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: 11/23/2022]
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Zhang XM, Zhang X, Luo X, Guo HT, Zhang LQ, Guo JW. Knowledge mapping visualization analysis of the military health and medicine papers published in the web of science over the past 10 years. Mil Med Res 2017; 4:23. [PMID: 28717517 PMCID: PMC5508635 DOI: 10.1186/s40779-017-0131-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 07/06/2017] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Military medicine is a research field that seeks to solve the medical problems that occur in modern war conditions based on public medicine theory. METHODS We explore the main research topics of military health and medical research in the web of science™ core collection (WoSCC) from 2007 to 2016, and the goal of this work is to serve as a reference for orientation and development in military health and medicine. Based on CiteSpace III, a reference co-citation analysis is performed for 7921 papers published in the WoSCC from 2007 to 2016. In addition, a cluster analysis of research topics is performed with a comprehensive analysis of high-yield authors, outstanding research institutions and their cooperative networks. RESULTS Currently, the research topics in military health and medicine mainly focus on the following seven aspects: mental health diagnoses and interventions, an army study to assess risk and resilience in service members (STARRS), large-scale military action, brain science, veterans, soldier parents and children of wartime, and wound infection. We also observed that the annual publication rate increased with time. Wessely S, Greenberg N, Fear NT, Smith TC, Smith B, Jones N, Ryan MAK, Boyko EJ, Hull L, and Rona RJ were the top 10 authors in military health and medicine research. The top 10 institutes were the Uniformed Services University of the Health Sciences, the United States Army, the United States Navy, Kings College London, Walter Reed National Military Medical Center, Boston University, Walter Reed Army Institute of Research, Walter Reed Army Medical Center, Naval Health Research Center, and the VA Boston Healthcare System. CONCLUSIONS We are able to perform a comprehensive analysis of studies in military health and medicine research and summarize the current research climate and the developmental trends in the WoSCC. However, further studies and collaborations are needed worldwide. Overall, our findings provide valuable information and new perspectives and shape future research directions for further research in the area of military health and medicine.
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Affiliation(s)
- Xuan-Ming Zhang
- Southwest Hospital, Third Military Medical University, Chongqing, 400038 China
| | - Xuan Zhang
- Southwest Hospital, Third Military Medical University, Chongqing, 400038 China
| | - Xu Luo
- Southwest Hospital, Third Military Medical University, Chongqing, 400038 China
| | - Hai-Tao Guo
- Southwest Hospital, Third Military Medical University, Chongqing, 400038 China
| | - Li-Qun Zhang
- Department of Clinical Laboratory, Xinqiao Hospital, Third Military Medical University, Chongqing, 400037 China
| | - Ji-Wei Guo
- Southwest Hospital, Third Military Medical University, Chongqing, 400038 China
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Shi QX, Zhang LJ, Yao Y, Zhang QY, Wang W, Li J, Shang YL, Bi H, Zhang SM, Guo HT, Wang YM, Yu SQ, Yi DH, Bueno FR, Kaye AD, Pei JM. κ-opioid receptor activation prevents against arrhythmias by preserving Cx43 protein via alleviation of intracellular calcium. Am J Ther 2014; 20:493-501. [PMID: 23011166 DOI: 10.1097/mjt.0b013e3182456676] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
κ-opioid receptor (κ-OR) activation with U50,488H, a selective κ-OR agonist, has been previously demonstrated to prevent against cardiac arrhythmias via stabilizing the synthesis and degradation of an integral membrane protein, Cx43, in gap junctions. However, the exact prevention mechanism remains unclear. The present study tested the hypothesis that the kappa OR agonist U50,488H mediates the prevention of arrhythmia through the regulation of intracellular calcium leading to the preservation of Cx43 protein. By performing electrocardiogram monitoring and immunoblotting in isolated Langendorff-perfused rat hearts, high concentrations of calcium-perfused rat hearts exhibited increased cardiac arrhythmias. Diminished expression of Cx43 protein was observed. The utilization of a whole-cell patch clamp technique revealed that U50,488H inhibited L-type calcium current in single ventricular myocytes in a dose-dependent manner. These effects were blocked by nor-binaltorphimine, potent and selective κ-OR antagonists. Administration of U50,488H before myocardial ischemia resulted in an attenuated of total arrhythmia scores. The attenuation effect was blocked by nor-binaltorphimine. The attenuation effect was antagonized both by Bay K8644, a L-type calcium channel agonist, and also by the Cx43 uncoupler heptanol. Finally, immunoblotting data demonstrated that the preservation of Cx43 protein conferred by U50,488H was reversed in the presence of Bay K8644. In summary, the present study demonstrates κ-OR activation with U50,488H may confer antiarrhythmic effects via modulation of the calcium-Cx43 pathway.
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Affiliation(s)
- Quan-Xing Shi
- 1Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, China 2Department of Cardiology, Institute for Cardiovascular Research, General Hospital of Shenyang Military Region, Shenyang, China 3Department of Cardiosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China 4Department of Anesthesiology, Louisiana State University School of Medicine, New Orleans, LA 5Department of Pharmacology, Louisiana State University School of Medicine, New Orleans, LA
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Zhang S, Jiang GC, Wang L, Guo HT, Tang XG, Bai DG. Foam Flooding with Ultra-Low Interfacial Tension to Enhance Heavy Oil Recovery. J DISPER SCI TECHNOL 2014. [DOI: 10.1080/01932691.2013.792272] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Shen M, Wu RX, Zhao L, Li J, Guo HT, Fan R, Cui Y, Wang YM, Yue SQ, Pei JM. Resveratrol attenuates ischemia/reperfusion injury in neonatal cardiomyocytes and its underlying mechanism. PLoS One 2012; 7:e51223. [PMID: 23284668 PMCID: PMC3527482 DOI: 10.1371/journal.pone.0051223] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 10/30/2012] [Indexed: 01/03/2023] Open
Abstract
This study was designed to investigate whether Resveratrol (Res) could be a prophylactic factor in the prevention of I/R injury and to shed light on its underlying mechanism. Primary culture of neonatal rat cardiomyocytes were randomly distributed into three groups: the normal group (cultured cardiomyocytes were in normal conditions), the I/R group (cultured cardiomyocytes were subjected to 2 h simulated ischemia followed by 4 h reperfusion), and the Res+I/R group (100 µmol/L Res was administered before cardiomyocytes were subjected to 2 h simulated ischemia followed by 4 h reperfusion). To test the extent of cardiomyocyte injury, several indices were detected including cell viability, LDH activity, Na+-K+-ATPase and Ca2+-ATPase activity. To test apoptotic cell death, caspase-3 activity and the expression of Bcl-2/Bax were detected. To explore the underlying mechanism, several inhibitors, intracellular calcium, SOD activity and MDA content were used to identify some key molecules involved. Res increased cell viability, Na+-K+-ATPase and Ca2+-ATPase activity, Bcl-2 expression, and SOD level. While LDH activity, capase-3 activity, Bax expression, intracellular calcium and MDA content were decreased by Res. And the effect of Res was blocked completely by either L-NAME (an eNOS inhibitor) or MB (a cGMP inhibitor), and partly by either DS (a PKC inhibitor) or Glybenclamide (a KATP inhibitor). Our results suggest that Res attenuates I/R injury in cardiomyocytes by preventing cell apoptosis, decreasing LDH release and increasing ATPase activity. NO, cGMP, PKC and KATP may play an important role in the protective role of Res. Moreover, Res enhances the capacity of anti-oxygen free radical and alleviates intracellular calcium overload in cardiomyocytes.
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Affiliation(s)
- Min Shen
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, People's Republic of China
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Rui-Xin Wu
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Lei Zhao
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Juan Li
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Hai-Tao Guo
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Rong Fan
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Yan Cui
- Department of Clinical Nursing, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Yue-Min Wang
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Shu-Qiang Yue
- Department of Hepatobiliary and Pancreas Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, People's Republic of China
- * E-mail: (SQY); (JMP)
| | - Jian-Ming Pei
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, People's Republic of China
- * E-mail: (SQY); (JMP)
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Li J, Shi QX, Fan R, Zhang LJ, Zhang SM, Guo HT, Wang YM, Kaye AJ, Kaye AD, Bueno FR, Xu XZ, Yu SQ, Yi DH, Pei JM. Vasculoprotective effect of U50,488H in rats exposed to chronic hypoxia: role of Akt-stimulated NO production. J Appl Physiol (1985) 2012; 114:238-44. [PMID: 23139366 DOI: 10.1152/japplphysiol.00994.2012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Impairment of pulmonary endothelium function in the pulmonary artery is a direct result of chronic hypoxia. This study is to investigate the vasculoprotective effects of U50,488H (a selective κ-opioid receptor agonist) and its underlying mechanism in hypoxia-induced pulmonary artery endothelial functional injury. Chronic hypoxia was simulated by exposing the rats to 10% oxygen for 2 wk. After hypoxia, right ventricular pressure (RVP) and right ventricular hypertrophy index (RVHI) were measured. The pulmonary vascular dysfunction, effect of nitric oxide synthase inhibitor (l-NAME) on the relaxation of U50,488H, and level of nitric oxide (NO) were determined. In vitro, the signaling pathway involved in the anti-apoptotic effect of U50,488H was investigated. Cultured endothelial cells were subjected to simulated hypoxia, and cell apoptosis was determined by TUNEL staining. U50,488H (1.25 mg/kg) significantly reduced RVP and RVHI in hypoxia. U50,488H markedly improved both pulmonary endothelial function (maximal vasorelaxation in response to ACh: 74.9 ± 1.8%, n = 6, P <0.01 vs. hypoxia for 2 wk group) and increased total NO production (1.65 fold). U50,488H relaxed the pulmonary artery rings of the hypoxic rats. This effect was partly abolished by l-NAME. In cells, U50,488H both increased NO production and reduced hypoxia-induced apoptosis. Moreover, pretreatment with nor-binaltorphimine (nor-BNI, a selective κ-opioid receptor antagonist), PI3K inhibitor, Akt inhibitor or l-NAME almost abolished anti-apoptotic effect exerted by U50,488H. U50,488H resulted in increases in Akt and eNOS phosphorylation. These results demonstrate that pretreatment with U50,488H attenuates hypoxia-induced pulmonary vascular endothelial dysfunction in an Akt-dependent and NO-mediated fashion.
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Affiliation(s)
- Juan Li
- Department of Physiology, National Key Discipline of Cell Biology, Fourth Military Medical University, Xi'an, China
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Zhang RH, Gao JY, Guo HT, Scott GI, Eason AR, Wang XM, Ren J. Inhibition of CYP2E1 attenuates chronic alcohol intake-induced myocardial contractile dysfunction and apoptosis. Biochim Biophys Acta Mol Basis Dis 2012; 1832:128-41. [PMID: 22967841 DOI: 10.1016/j.bbadis.2012.08.014] [Citation(s) in RCA: 32] [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] [Received: 03/30/2012] [Revised: 08/23/2012] [Accepted: 08/29/2012] [Indexed: 02/07/2023]
Abstract
Alcohol intake is associated with myocardial contractile dysfunction and apoptosis although the precise mechanism is unclear. This study was designed to examine the effect of the cytochrome P450 enzyme CYP2E1 inhibition on ethanol-induced cardiac dysfunction. Adult male mice were fed a 4% ethanol liquid or pair-fed control diet for 6weeks. Following 2weeks of diet feeding, a cohort of mice started to receive the CYP2E1 inhibitor diallyl sulfide (100mg/kg/d, i.p.) for the remaining feeding duration. Cardiac function was assessed using echocardiographic and IonOptix systems. Western blot analysis was used to evaluate CYP2E1, heme oxygenase-1 (HO-1), iNOS, the intracellular Ca(2+) regulatory proteins sarco(endo)plasmic reticulum Ca(2+)-ATPase, Na(+)Ca(2+) exchanger and phospholamban, pro-apoptotic protein cleaved caspase-3, Bax, c-Jun-NH(2)-terminal kinase (JNK) and apoptosis signal-regulating kinase (ASK-1). Ethanol led to elevated levels of CYP2E1, iNOS and phospholamban, decreased levels of HO-1 and Na(+)Ca(2+) exchanger, cardiac contractile and intracellular Ca(2+) defects, cardiac fibrosis, overt O(2)(-) production, and apoptosis accompanied with increased phosphorylation of JNK and ASK-1, the effects were significantly attenuated or ablated by diallyl sulfide. Inhibitors of JNK and ASK-1 but not HO-1 inducer or iNOS inhibitor obliterated ethanol-induced cardiomyocyte contractile dysfunction, substantiating a role for JNK and ASK-1 signaling in ethanol-induced myocardial injury. Taken together, these findings suggest that ethanol metabolism through CYP2E1 may contribute to the pathogenesis of alcoholic cardiomyopathy including myocardial contractile dysfunction, oxidative stress and apoptosis, possibly through activation of JNK and ASK-1 signaling.
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Affiliation(s)
- Rong-Huai Zhang
- Department of Geriatrics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
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21
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Guo HT, Zhang JZ, Wei SQ, Xie DT, Che JC. [Seasonal variation characteristics of phosphorus speciation in the sediment of Changshou Lake]. Huan Jing Ke Xue 2011; 32:1994-1999. [PMID: 21922820] [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: 05/31/2023]
Abstract
To further know the seasonal variation characteristics of phosphorus species in lake sediment, the contents of different phosphorus species in the surface sediment sampling from Changshou Lake were determined by using the SMT sequential extraction method in July and November, 2009, and March, 2010. The contents of total phosphorus (TP) basically show an order of the low-water period, high-water period, and normal-water period from high to low, and the maximum appeared in Shoudao (2960.29 mg/kg) while the minimum in Guanjiakou (586.05 mg/kg). The mass fractions of phosphorus associated with hydrous ferric/aluminum oxides (Fe/Al-P) and organic phosphorus (OP) in TP at all sampling sits are in an order of the normal-water period, high-water period, and low-water period from high to low, and the maximum of Fe/Al-P appeared in Lewen (40.01%) while that of OP in the dam mouth (72.44%). The mass fraction of phosphorus bound to calcium salt (Ca-P) in TP is in an order of the low-water period, normal-water period, and high-water period, and the maximum appeared in Baibudang (15.52%). These results suggested that the phosphorus speciation in the sediment of Changshou Lake shows obviously temporal and spatial distribution characteristics, and Fe/Al-P is mainly influenced by pH of the overlying water, while OP is not apparently influenced by dissolved oxygen (DO).
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Affiliation(s)
- Hai-Tao Guo
- Chongqing Key Laboratory of Agricultural Resources and Environment, Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400716, China.
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22
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Cui Y, Zhang SM, Zhang QY, Fan R, Li J, Guo HT, Bi H, Wang YM, Hu YZ, Zheng QJ, Gu CH, Yu SQ, Yi DH, Li ZC, Pei JM. Modulation of intracellular calcium transient in response to β-adrenoceptor stimulation in the hearts of 4-wk-old rats during simulated weightlessness. J Appl Physiol (1985) 2010; 108:838-44. [DOI: 10.1152/japplphysiol.01055.2009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Modulation of intracellular calcium ([Ca2+]i) transient in response to β-adrenoceptor stimulation in the hearts of hindlimb unweighted (HLU) rats during simulated weightlessness has not been reported. In the present study, we adopted the rat tail suspension for 4 wk to simulate weightlessness. Effects of simulated microgravity on β-adrenoceptor responsiveness were then studied. Mean arterial blood pressure, left ventricular pressure (LVP), systolic function [maximum positive change in pressure over time (+dP/d tmax)], and diastolic function [maximum negative change in pressure over time (−dP/d tmax)] were monitored during the in vivo experiment. β-Adrenoceptor density was quantitated by radioactive ligand binding. Single rat ventricular myocyte was obtained by enzymatic dissociation method. ±dP/d tmax, myocyte contraction, intracellular [Ca2+]i transient, and L-type calcium current in response to β-adrenoceptor stimulation with isoproterenol were measured. Compared with the control group, no significant changes were found in heart weight, body weight, and mean arterial blood pressure, whereas LVP and ±dP/d tmax were significantly reduced. LVP and ±dP/d tmax were significantly attenuated in the HLU group in response to isoproterenol administration. In the in vitro study, the β-adrenoceptor density was unchanged. Effects of isoproterenol on electrically induced single-cell contraction and [Ca2+]i transient in myocytes of ventricles in HLU rats were significantly attenuated. The enhanced L-type Ca2+ current elicited by isoproterenol in cardiomyocytes was significantly decreased in the HLU group. The above results indicate that impaired function of L-type Ca2+ current and decreased [Ca2+]i transient cause the depressed responsiveness of the β-adrenoceptor stimulation, which may be partially responsible for the depression of cardiac function.
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Affiliation(s)
- Yan Cui
- Departments of 1Pathophysiology and
| | - Shu-Miao Zhang
- Physiology, National Key Discipline of Cell Biology, and
| | - Quan-Yu Zhang
- Physiology, National Key Discipline of Cell Biology, and
| | - Rong Fan
- Physiology, National Key Discipline of Cell Biology, and
| | - Juan Li
- Physiology, National Key Discipline of Cell Biology, and
| | - Hai-Tao Guo
- Physiology, National Key Discipline of Cell Biology, and
| | - Hui Bi
- Physiology, National Key Discipline of Cell Biology, and
| | - Yue-Min Wang
- Physiology, National Key Discipline of Cell Biology, and
| | - Yu-Zhen Hu
- Physiology, National Key Discipline of Cell Biology, and
| | - Qi-Jun Zheng
- Department of Cardiac Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, People's Republic of China
| | - Chun-Hu Gu
- Department of Cardiac Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, People's Republic of China
| | - Shi-Qiang Yu
- Department of Cardiac Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, People's Republic of China
| | - Ding-Hua Yi
- Department of Cardiac Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, People's Republic of China
| | | | - Jian-Ming Pei
- Physiology, National Key Discipline of Cell Biology, and
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Yin W, Liu JC, Fan R, Sun XQ, Ma J, Feng N, Zhang QY, Yin Z, Zhang SM, Guo HT, Bi H, Wang YM, Sun X, Cheng L, Cui Q, Yu SQ, Yi DH, Pei JM. Modulation of {beta}-adrenoceptor signaling in the hearts of 4-wk simulated weightlessness rats. J Appl Physiol (1985) 2008; 105:569-74. [PMID: 18511523 DOI: 10.1152/japplphysiol.01381.2007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The modulation of beta-adrenoceptor signaling in the hearts of hindlimb unweighting (HU) simulated weightlessness rats has not been reported. In the present study, we adopted the rat tail suspension for 4 wk to simulate weightlessness; then the effects of simulated microgravity on beta-adrenoceptor signaling were studied. Mean arterial blood pressure (ABP), left ventricular pressure (LVP), systolic function (+dP/dtmax), and diastolic function (-dP/dtmax) were monitored in the course of the in vivo experiment. Single rat ventricular myocyte was obtained by the enzymatic dissociation method. Hemodynamics, myocyte contraction, and cAMP production in response to beta-adrenoceptor stimulation with isoproterenol or adenylyl cyclase stimulation with forskolin were measured, and Gs protein was also determined. Compared with the control group, no significant changes were found in heart weight, body weight and ABP, while LVP and +/-dP/dtmax were significantly reduced. The ABP decrease, LVP increase, and +/-dP/dtmax in response to isoproterenol administration were significantly attenuated in the HU group. The effects of isoproterenol on electrically induced single-cell contraction and cAMP production in myocytes of ventricles in the HU rats were significantly attenuated. The biologically active isoform, Gsalpha (45 kDa) in the heart, was unchanged. Both the increased electrically induced contraction and cAMP production in response to forskolin were also significantly attenuated in the simulated weightlessness rats. Above results indicated that impaired function of adenylyl cyclase causes beta-adrenoceptor desensitization, which may be partly responsible for the depression of cardiac function.
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Affiliation(s)
- Wen Yin
- Department of Emergency, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi Province, China
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Guo HT, Zhang RH, Huang LY, Li J, Liu YL, Bi H, Zhang QY, Wang YM, Sun X, Ma XL, Cheng L, Liu JC, Yu SQ, Yi DH, Pei JM. Mechanisms Involved in the Hypotensive Effect of a κ-Opioid Receptor Agonist in Hypertensive Rats. Arch Med Res 2007; 38:723-9. [PMID: 17845890 DOI: 10.1016/j.arcmed.2007.04.009] [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] [Received: 02/15/2007] [Accepted: 04/02/2007] [Indexed: 10/22/2022]
Abstract
BACKGROUND It remains unclear whether the activation of kappa-opioid receptors has strong hypotensive effects under hypertensive condition, and the underlying mechanisms have not yet been investigated. Therefore, the present study is designed to use spontaneously hypertensive rats (SHR) to investigate the effects of a kappa-opioid receptor agonist on the regulation of urinary formation in hypertensive conditions and to identify its underlying mechanism. METHODS The hemodynamics, urine flow rate, vasodilatation of isolated renal artery, and plasma hormones were determined by physiological in vivo experimental technique, isolated artery perfusion technique and radioimmunoassay. RESULTS Intravenous administration of U50, 448H significantly decreased mean arterial blood pressure in both Wistar-Kyoto (WKY) rats and SHR. However, the blood pressure vasodepressor effect of U50, 448H was much more profound in SHR than in WKY rats. Administration of U50, 448H in SHR not only caused significantly greater effects in increasing urine volume and decreasing plasma anti-diuretic hormone than in WKY rats, but also caused significant reduction in plasma angiotensin. Moreover, vasodilatory effect of U50, 488H was significantly exhibited in the renal artery segments isolated from SHR. All effects described above were abolished by nor-binaltorphimine. CONCLUSIONS These data indicate that the depressor effect of U50, 488H in SHR is significantly stronger than that in WKY rats, and the effect is mediated or modulated by a kappa-opioid receptor sensitive mechanism. The sensitized hypotensive effect of U50, 488H in SHR may be attributed, in part, to its vasodilatory effect, enhanced beneficial effect on plasma humoral factors, and stronger diuretic effect in these hypertensive animals.
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MESH Headings
- 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer/administration & dosage
- 3,4-Dichloro-N-methyl-N-(2-(1-pyrrolidinyl)-cyclohexyl)-benzeneacetamide, (trans)-Isomer/pharmacology
- Angiotensins/blood
- Animals
- Antihypertensive Agents/administration & dosage
- Antihypertensive Agents/pharmacology
- Blood Pressure/drug effects
- Diuresis/drug effects
- Hypertension/drug therapy
- Hypertension/etiology
- Hypertension/physiopathology
- In Vitro Techniques
- Male
- Rats
- Rats, Inbred SHR
- Rats, Inbred WKY
- Receptors, Opioid, kappa/agonists
- Receptors, Opioid, kappa/physiology
- Renal Artery/drug effects
- Urodynamics/drug effects
- Vasodilation/drug effects
- Vasopressins/blood
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Affiliation(s)
- Hai-Tao Guo
- Department of Physiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
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Cheng L, Ma S, Wei LX, Guo HT, Huang LY, Bi H, Fan R, Li J, Liu YL, Wang YM, Sun X, Zhang QY, Yu SQ, Yi DH, Ma XL, Pei JM. Cardioprotective and antiarrhythmic effect of U50,488H in ischemia/reperfusion rat heart. Heart Vessels 2007; 22:335-44. [PMID: 17879026 DOI: 10.1007/s00380-007-0983-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2006] [Accepted: 02/24/2007] [Indexed: 11/29/2022]
Abstract
The objective of this study was to investigate the protective effect of U50,488H, a selective kappa-opioid receptor agonist, in the ischemia/reperfusion (I/R) rat and to delineate the underlying mechanism. Rat heart I/R injury was induced by occluding the left anterior descending coronary artery for 45 min and restoring perfusion for 120 min. U50,488H or vehicle was intravenously injected before ischemia. Electrocardiogram, heart rate (HR), arterial blood pressure (ABP), left ventricular pressure (LVP), systolic function (+dp/dtmax), and diastolic function (-dp/dtmax) were monitored in the course of the experiment. Myocardial infarction size was evaluated. Plasma concentrations of cardiac troponin T (cTnT), creatine kinase (CK), and lactate dehydrogenase (LDH) were measured. Single rat ventricular myocyte was obtained by enzymatic dissociation method. The potassium currents (IK) of isolated ventricular myocytes were recorded with the whole-cell configuration of the patch-clamp technique. Compared with the sham control group, no significant change was found in HR, while ABP, LVP and +/-dp/dtmax were significantly reduced in the I/R group. Administration of U50,488H significantly lowered HR in both control and I/R groups. Compared with the vehicle-treated I/R group, administration of U50,488H had no significant effect on I/R-induced reduction in ABP, LVP, and +/-dp/dtmax. However, this treatment significantly reduced the myocardial infarction size, and markedly decreased the contents of plasma cTnT, CK and LDH. During ischemia and reperfusion, the incidence of ventricular arrhythmia in U50,488H-treated rats was significantly reduced. These effects were independent of the bradycardia induced by U50,488H, as the reducing infarct size and antiarrhythmic effect of U50,488H were still observed in animals in which heart rate was kept constant by electrical pacing. U50,488H and BRL-52537 still produced an antiarrhythmic effect when the rat heart was subjected to a shorter ischemic period of 10 min occlusion of coronary artery, which produced no infarction. IK of the myocytes were inhibited by U50,488H in a dose-dependent manner in normal and hypoxic rat ventricular myocytes. However, the effects of U50,488H on IK did not show any significant difference in normal and hypoxic myocytes. The above-described effects of U50,488H were totally blocked by nor-Binaltorphimine, a selective kappa-opioid receptor antagonist. The results suggest that kappa-opioid agonist U50,488H exerts its direct cardioprotective and antiarrhythmic effects against I/R via kappa-opioid receptor, which participates in the regulation of potassium channels in normal and hypoxic ventricular myocytes.
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Affiliation(s)
- Liang Cheng
- Department of Cardiac Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, China
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Sun YH, Xie P, Guo HT, Xia WW. [Cloning and the sequence analysis of the fish glutathione transferase Pi gene]. Yi Chuan 2007; 29:349-54. [PMID: 17369158 DOI: 10.1360/yc-007-0349] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Using RT-PCR method, the glutathione transferase Pi cDNAs were cloned from Cyprinus carpio, Hypophthalmichthys molitrix, and Carassius auratus. The open reading frames (ORFs) from the 3 fishes were 627 bp long (encoding for 208 amino acids) with the initial code ATG and the terminal code TGA. The sequence similarity was 50% between fish and mammals, 33% between fish and amphibian, and 15% between fish and arthropoda, respectively. The sequence similarity was big among fishes, and the average value of the 4 cyprinids was about 85%. Phylogenetic tree was constructed for 13 species based on GST Pi amino acid sequences using MP (Maximum Parsimony) method. Two major clusters were recognized: cluster one consisted of Mammals (bootstrap 100) and cluster two consisted of fishes (bootstrap 93). Based on the sequences analyses of N/C domain of GST Pi, we proposed the detoxification mechanism of freshwater fishes that were thought to have stronger tolerance to microcystins.
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Affiliation(s)
- Yu-Hua Sun
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Education Ministry, Huazhong Agricultural University, Wuhan, China.
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Pei JM, Sun X, Guo HT, Ma S, Zang YM, Lu SY, Bi H, Wang YM, Ma H, Ma XL. U50,488H depresses pulmonary pressure in rats subjected to chronic hypoxia. J Cardiovasc Pharmacol 2006; 47:594-8. [PMID: 16680074 DOI: 10.1097/01.fjc.0000211737.55583.15] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
In this study, we determined the effect of U50,488H (a selective kappa-opioid receptor agonist) on pulmonary artery in rats and investigated its prevention and treatment effects on hypoxic pulmonary hypertension (HPH). Isolated pulmonary arterial rings were superfused and the tension of the vessel was measured. The model of HPH was developed and indexes for hemodynamics and right ventricular hypertrophy were measured. We found that U50,488H relaxed the pulmonary artery rings in a dose-dependent manner and the effect was abolished by nor-binaltorphimine, a selective kappa-opioid receptor antagonist. Intravenous administration of U50,488H significantly lowered mean pulmonary artery pressure (mPAP) in normal rats and this effect was also abolished by nor-binaltorphimine. Hypoxia induced severe HPH in rats and intraperitoneal administration of U50,488H (every other day) during chronic hypoxia reduced mPAP and attenuated right ventricular hypertrophy compared with the control group. Moreover, acute intravenous administration of U50,488H after the rats subjected to chronic hypoxia for 4 weeks significantly lowered mPAP. Thus, U50,488H has significant vasorelaxant effect in rat pulmonary artery and has certain preventive and therapeutic application in HPH.
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Affiliation(s)
- Jian-Ming Pei
- Department of Physiology, Fourth Military Medical University, Xi'an, China.
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Sun X, Ma S, Zang YM, Lu SY, Guo HT, Bi H, Wang YM, Ma H, Ma XL, Pei JM. Vasorelaxing effect of U50,488H in pulmonary artery and underlying mechanism in rats. Life Sci 2006; 78:2516-22. [PMID: 16336977 DOI: 10.1016/j.lfs.2005.10.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2005] [Accepted: 10/06/2005] [Indexed: 11/28/2022]
Abstract
AIM To investigate the relaxation effect and underlying mechanism of U50,488H (a selective kappa-opioid receptor agonist) in pulmonary artery in the rat. METHODS Isolated pulmonary artery ring was perfused and the tension of the vessel was measured. RESULTS U50,488H relaxed the pulmonary artery ring in a dose-dependent manner and the effect was abolished by nor-binaltorphimine, a selective kappa-opioid receptor antagonist. The relaxation effect of U50,488H in pulmonary artery was partially endothelium-dependent and was significantly attenuated in the presence of L-NAME. The relaxation effect of U50,488H was significantly attenuated by K(V) channel blocker 4-AP (4-aminopyridine), but not by glibenclamide (ATP-sensitive K+ channel blocker) nor TEA (tetraethylamonium, Ca2+-activated K+ channel blocker). Further study also showed that endothelium denudation and 4-AP have an additive inhibitory effect on pulmonary artery relaxation caused by U50,488H. CONCLUSION Kappa-opioid receptor activation by U50,488H relaxes pulmonary artery via two separate pathways: one is endothelium-derived nitric oxide, the other is K(V) channel in pulmonary artery smooth muscle.
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Affiliation(s)
- Xin Sun
- Department of Physiology, Fourth Military Medical University, Xi'an 710032, China
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Abstract
AIM: To establish a method detecting porcine endogenous retrovirus (PERV) in China experimental minipigs and to evaluate the safety of PERV in three individuals treated with bioartificial liver support systems based on porcine hepatocytes.
METHODS: Porcine hepatocytes were isolated with two-stage perfusion method, then cultured in the bioreactor, which is separated by a semipermeable membrane (0.2 μm) from the lumen through which the patients’ blood plasma was circulated. After post-hemoperfusion, patients’ blood was obtained for screening. Additionally, samples of medium collected from both intraluminal and extraluminal compartments of the laboratory bioreactor and culture supernate in vitro was analyzed. The presence of viral sequences was estimated by polymerase chain reaction (PCR) and reverse transcriptase-polymerase chain reaction (RT-PCR). Finally, the infection of virus in the supernate of common culture was ascertained by exposure to the fetal liver cells.
RESULTS: PERV-specific gag sequences were found in the porcine hepatocytes using RT-PCR. and were detected in all samples from the intraluminal, extraluminal samples and culture supernate. However, culture supernatant from primary porcine hepatocytes (cleared of cellular debris) failed to infect human fetal liver cells. Finally, RT-PCR detected no PERV infection was found in the blood samples obtained from three patients at various times post-hemoperfusion.
CONCLUSION: The assays used are specific and sensitive, identified by second PCR. PERVs could be released from hepatocytes cultured in bioreactor without the stimulation of mitogen and could not be prevented by the hollow fiber semipermeable membrane, indicating the existence of PERV safety in extracorporeal bioartificial liver support system (EBLSS).
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Affiliation(s)
- Hai-Hui Wang
- Department of Endocrine Diseases, Southwestern Hospital, Third Military Medical University, Chongqing 400038, China
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Guo HT, Zhu MZ, Zhang RH, Bi H, Zhang B, Zhang HF, Yu J, Lu SY, Pei JM. [Vasonatrin peptide attenuates the enhancement of electrically-induced intracellular calcium transient by isoproterenol in rat cardiac myocytes]. Sheng Li Xue Bao 2004; 56:335-40. [PMID: 15224146] [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: 04/30/2023]
Abstract
The purpose of this study was to investigate the effects of vasonatrin peptide (VNP) on electrically-induced intracellular calcium ([Ca(2+)](i)) transient and mechanism of the effects in the cardiac myocytes. The [Ca(2+)](i) transient was measured with a fluoremetric method. The effects of HS-142-1, 8-Br-cGMP and methylene blue (MB) on [Ca(2+)](i) transient in cardiac myocytes were also determined. Isoproterenol (Iso) at 10(-10)~10(-6) mol/L augmented electrically-induced [Ca(2+)](i) transient dose-dependently, which was (13+/-8)% (P>0.05), (26+/-13)% (P< 0.05), (66+/-10)% (P<0.01), (150+/-10)% (P<0.01) and (300+/-25)% (P<0.01), respectively. These effects were blocked by an beta-adrenergic bloker propranolol (10(-6) mol/L). The effect of Iso (10(-8) mol/L) on [Ca(2+)](i) transient was attenuated in a dose-dependent manner by VNP at 10(-10)~10(-6) mol/L, which was (99+/-3)% (P>0.05), (96+/-2)% (P<0.05), (84+/-6)% (P<0.01), (66+/-3)% (P<0.01) and (62+/-3)% (P<0.01), respectively. 8-Br-cGMP (10(-7)~10(-3) mol/L) aslo attenuated 10(-8) mol/L Iso-induced [Ca(2+)](i) transient dose-dependent. The effect of VNP on [Ca(2+)](i) transient was almost abolished in the presence of HS-142-1 (2x10(-5) mol/L), an antagonist of the natriuretic peptide guanylate cyclase (GC) receptors. MB (10(-5) mol/L), an inhibitor of GC, not only blocked the effect of VNP in myocytes, but also augmented electrically-induced [Ca(2+)](i) transient. VNP and HS-142-1 themselves did not change the [Ca(2+)](i) transient in the cardiac myocytes significantly. But MB augmented the [Ca(2+)](i) transient in the cardiac myocytes significantly. These results suggest that VNP attenuates [Ca(2+)](i) transient induced by Iso. This effect is possibly achieved by binding VNP with the natriuretic peptide GC receptors in the myocytes, leading to an increase in intracellular cGMP.
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Affiliation(s)
- Hai-Tao Guo
- Department of Physioloy, Fourth Military Medical University, Xi'an 710032 China
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Abstract
AIM: To study the method of cryopreserving porcine hepatocytes and gel collagen culture measure after its cryopreservation.
METHODS: Hepatocytes, isolated from Chinese experimental suckling mini-pigs by two-step perfusion with collagenase using an extra corporeal perfusion apparatus, were cryopreserved with 50 mL/L to 200 mL/L DMSO in liquid nitrogen for 4 mo, then thawed and seeded in 1 or between 2 layers of gel collagen. The expression of porcine albumin message RNA, cellular morphology and content of aspartate aminotransferase (AST) and urea nitrogen (UN) were examined during culture in gel.
RESULTS: Viability of 150 mL/L DMSO group thawed hepatocytes was (83 ± 4)%, but after purification, its viability was (90 ± 5)%, attachment efficiency was (86 ± 7)%, the viability of thawed hepatocytes was near to fresh cells. When the thawed hepatocytes were cultivated in gel collagen with culture medium adding epidermal growth factor, the hepatocytes grew in various administrative levels in mixed collagen gel, and bunchy in the sandwich configuration cultures. For up to 10 days’ culture, the typical cellular morphological characteristics of cultivated hepatocytes could be observed. The leakage of AST was lower during culture in gel than that in common culture. At the same time, the UN synthesized by cells cultivated in mixed gel collagen was higher than that in other groups.
CONCLUSION: Storage in liquid nitrogen can long keep hepatocytes’ activities, the concentration of 150 mL/L DMSO is fit for porcine hepatocytes’ cryopreservation. Thawed hepatocytes can be cultivated with collagenous matrix, which provides an environment that more closely resembles that in vivo and maintain the expression of certain liver-specific function of hepatocytes.
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Affiliation(s)
- Hong-Ling Liu
- Research Institute of Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
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Abstract
AIM: To explore the methods of hepatocytes culture in a collagen gel mixture or between double layers of collagen sandwich configuration and to examine the functional and cytomorphological characteristics of cultured hepatocytes.
METHODS: A two-step collagenase perfusion technique was used to isolate the hepatocytes from Wistar rats or newborn Chinese experimental piglets. The isolated hepatocytes were cultured in a collagen gel mixture or between double layers of collagen sandwich configuration respectively. The former was that rat hepatocytes were mixed with type I rat tail collagen solution till gelled, and the medium was added onto the gel. The latter was that swine hepatocytes were seeded on a plate precoated with collagen gel for 24 h, then another layer of collagen gel was overlaid, resulting in a sandwich configuration. The cytomorphological characteristics, albumin secretion, and LDH-release of the hepatocytes cultured in these two models were examined.
RESULTS: Freshly isolated rat hepatocytes were successfully mixed and fixed in collagen gel, and cultured in the gel condition. During the culture period, the urea synthesized and secreted by rat hepatocytes was detected throughout the period. Likewise, newborn experimental piglet hepatocytes were successfully fixed between the double layers of collagen gel, forming a sandwich configuration. Within a week of culture, the albumin secreted by swine hepatocytes was detected by SDS/PAGE analysis. The typical cytomorphological characteristics of the hepatocytes cultured by the above two culture models were found under a phase-contrast microscope. There was little LDH-release during the culture period.
CONCLUSION: Both collagen gel mixture and double layers of collagen sandwich configuration can provide cultural conditions much closer to in vivo environment, and are helpful for maintaining specific hepatic functions and cytomorphological characteristics. A collagen gel mixture culture may be more eligible for the study of bioartificial livers.
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Affiliation(s)
- Ying-Jie Wang
- Institute of Infectious Diseases, Southwest Hospital, Third Military Medical University, Chongqing 400038, China.
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Guo HT, Wang YJ, Liu HL, Wang HH, Liu J, Huang YP, Wang YM. Detection and significance of PERV in primary porcine hepatocytes. Shijie Huaren Xiaohua Zazhi 2004; 12:101-104. [DOI: 10.11569/wcjd.v12.i1.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the significance of laboratory detection for PERV in primary porcine hepatocytes.
METHODS: Porcine hepatocytes was isolated and cultured with a two-stage perfusion method. Polymerase chain reaction (PCR) were used to detect PERV previrus sequences and reverse transcription polymerase chain reaction (RT-PCR) assays were used to detect PERV RNA sequences by using specific primers in primary porcine hepatocytes and culture supernate, controlled with no RT-PCR.
RESULTS: All these PCR assays gave positive results in tissue and serum samples from 2 HCV patients, 1 rabbit and 1 rat. Observation showed the persistent releasing of PERV in the culture supernate in different time points without the stimulation of mitogen by the established method and could last till cell death.
CONCLUSION: The method is rapid, cheap and safe, and it will be helpful to the further study of PERV infection and biosafety. The releasing of PERVs in the culture model demonstrates the existence of PERV security in the bioartificial liver support system.
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Lu SY, Zhu MZ, Wang DS, Chen SY, Zhang WD, Dong H, Yu J, Guo HT. Inhibition of the proliferation of smooth muscle cells from human coronary bypass vessels by vasonatrin peptide. Physiol Res 2004; 53:387-93. [PMID: 15311997] [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: 04/30/2023] Open
Abstract
Abnormal proliferation of vascular smooth muscle cells (VSMCs) is known to be a key event in the development of atherosclerosis and restenosis. The present study examined the effect of a novel synthetic natriuretic peptide, vasonatrin peptide (VNP), on norepinephrine (NE)-induced proliferation of VSMCs from coronary bypass vessels. Human VSMCs were isolated from an internal mammary artery (IMA) and saphenous vein (SV) by explant culture and stimulated with NE. MTT assay and [3H] thymidine-incorporation were undertaken to analyze cell proliferation and radioimmunoassay was used to determine the level of intracellular cyclic 3',5'-guanosine monophosphate (cyclic GMP). NE (10(-8) - 10(-7) mol/l) had a mitogenic effect in human VSMCs from both SV and IMA. However, NE-stimulated proliferation of VSMCs from SV was greater than that from IMA. Furthermore, low concentration of NE (10(-10) mol/l) promoted cell growth in SV-derived cells but not in IMA-derived cells. VNP (10(-8) - 10(-6) mol/l) reduced NE-induced cell proliferation and increased intracellular cyclic GMP, which were abrogated by HS-142-1. In addition, the growth inhibition of VNP was mimicked by 8-bromo-cGMP. These results indicate that VNP has a significant inhibitory effect on NE-stimulated proliferation of human VSMCs from both IMA and SV, which is mediated by guanylate cyclase-linked receptors by increasing cyclic GMP.
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Affiliation(s)
- S Y Lu
- Department of Physiology, Fourth Military Medical University, 17# West Changle Road, Xi'an 710032, China.
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Lu SY, Zhu MZ, Wang DS, Chen SY, Zhang WD, Dong H, Yu J, Guo HT. Inhibition of the proliferation of smooth muscle cells from human coronary bypass vessels by vasonatrin peptide. Physiol Res 2004. [DOI: 10.33549/physiolres.930473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Abnormal proliferation of vascular smooth muscle cells (VSMCs) is known to be a key event in the development of atherosclerosis and restenosis. The present study examined the effect of a novel synthetic natriuretic peptide, vasonatrin peptide (VNP), on norepinephrine (NE)-induced proliferation of VSMCs from coronary bypass vessels. Human VSMCs were isolated from an internal mammary artery (IMA) and saphenous vein (SV) by explant culture and stimulated with NE. MTT assay and [3H] thymidine-incorporation were undertaken to analyze cell proliferation and radioimmunoassay was used to determine the level of intracellular cyclic 3’,5’-guanosine monophosphate (cyclic GMP). NE (10-8 - 10-7 mol/l) had a mitogenic effect in human VSMCs from both SV and IMA. However, NE-stimulated proliferation of VSMCs from SV was greater than that from IMA. Furthermore, low concentration of NE (10-10 mol/l) promoted cell growth in SV-derived cells but not in IMA-derived cells. VNP (10-8 - 10-6 mol/l) reduced NE-induced cell proliferation and increased intracellular cyclic GMP, which were abrogated by HS-142-1. In addition, the growth inhibition of VNP was mimicked by 8-bromo-cGMP. These results indicate that VNP has a significant inhibitory effect on NE-stimulated proliferation of human VSMCs from both IMA and SV, which is mediated by guanylate cyclase-linked receptors by increasing cyclic GMP.
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Yu J, Zhu MZ, Wei GZ, Chen BY, Lu SY, Kang YF, Guo HT, Ma H, Dong MQ. [Vasorelaxing role of vasonatrin peptide in human intramammary artery in vitro]. Sheng Li Xue Bao 2003; 55:187-90. [PMID: 12715109] [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: 03/02/2023]
Abstract
The purpose of this study was to investigate the vasorelaxing effect of vasonatrin peptide (VNP) on human intramammary artery (HIMA).The vasorelaxing effect of VNP on HIMA was measured by means of perfusion in vitro. The effects of HS-142-1, TEA, 8-Br-cGMP and methylene blue (MB) were also observed. It was found that VNP caused a concentration-dependent relaxation in HIMA which was independent of the endothelium. 8-Br-cGMP (0.1-1000 micromol/L) also caused a concentration-dependent relaxation in HIMA. The vasorelaxing effect of VNP disappeared in the presence of HS-142-1 (20 micromol/L), an antagonist of the natriuretic peptide guanylate cyclase (GC) receptor. MB (10 micromol/L), an inhibitor of GC, not only blocked completely the relaxation of HIMA, but also enhanced the vascular contraction induced by norepinephrine. TEA (1 mmol/L), an antagonist of calcium activated potassium channels (K(Ca)), reduced but not completely blocked the vasorelaxing effect of VNP. These findings suggest that VNP can relax HIMA, which is independent of the endothelium. This effect is possibly achieved by the binding of VNP with the natriuretic peptide GC receptors in the smooth muscle cells (SMCs), leading to an increase in intracellular cGMP level. Moreover, the vasorelaxing effect of VNP is associated with K(Ca).
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Affiliation(s)
- Jun Yu
- Department of Physiology, Fourth Military Medical University, Xi'an, PR China
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Lu SY, Zhu MZ, Guo HT, Yu J, Wei QM. [Inhibition of moderate hypoxia-induced protein synthesis by vasonatrin peptide in cultured neonatal rat cardiomyocytes]. Sheng Li Xue Bao 2002; 54:7-11. [PMID: 11930233] [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: 02/24/2023]
Abstract
The present work was to investigate the effects of vasonatrin peptide (VNP) on cardiomyocyte protein synthesis induced by moderate hypoxia. In cultured neonatal rat cardiomyocytes, MTT methods, total protein measurement and (3)H-leucine incorporation were used to calculate the cell number and measure the protein synthesis of cardiomyocytes. Furthermore, radioimmunoassay was undertaken to observe the effects of VNP on the intracellular levels of cAMP, cGMP and the concentration of endothelin (ET) in the culture medium. The results showed that both the cell number and protein synthesis decreased with severe hypoxia for 24 h. In contrast, under moderate hypoxia, cardiomyocyte hypertrophy developed; the protein synthesis as evidenced by total protein content and 3H-eucine incorporation increased significantly. VNP reduced cardiomyocyte protein synthesis induced by moderate hypoxia in a dose-dependent manner. Furthermore, VNP increased the intracellular level of cGMP and decreased the concentration of ET in the culture medium under moderate hypoxia, but had no effect on the level of cAMP. These results suggest that VNP inhibits moderate hypoxia-induced protein synthesis in cultured neonatal rat cardiac myocytes. This effect is mediated, at least in part, by an increase in intracellular cGMP, a reduction in synthesis, and/or a release in ET of cardiomyocytes.
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Affiliation(s)
- Shun-Yan Lu
- Department of Physiology, The Fourth Military Medical University, Xi an 710032
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Guo HT, Zhu MZ, Lu SY, Yu J, Dong MQ, Gao Z, Shi PT. [Vasonatrin peptide attenuates hypoxia-induced increase in [Ca(2+)] (i) of culured rat cardiac fibroblasts]. Sheng Li Xue Bao 2001; 53:286-90. [PMID: 11930207] [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: 02/24/2023]
Abstract
The purpose of this work was to test the hypothesis that vasonatrin peptide (VNP) can attenuate the growth-promoting effect by hypoxia in cardiac fibroblasts of cultured neonatal rats. Cultured fibroblasts were divided into four groups: control group, hypoxia group, VNP group and VNP+hypoxia group. The growth of cardiac fibroblasts was observed using MTT method and the incorporation of (3)H-TdR, and the effect of VNP on the intracellular level of Ca(2+) was measured by means of interactive laser cytometry. It was found that hypoxia (2% - 3%) increased significantly the MTT optical density (OD) of cardiac fibroblasts (P<0.05 vs control group), but the increase was greatly attenuated in the VNP (10(- 6)mol/L) group and also the incorporation of (3)H-TdR in cardiac fibroblasts (P<0.05 vs hypoxia group). VNP (10(- 6)mol/L) also decreased the intracellular level of Ca(2+) which was increased by hypoxia (P<0.05) as compared with control and hypoxia group. These findings demonstrate that VNP can attenuate the hypoxia-induced growth-promoting effect in cardiac fibroblasts, which may be associated with the elevation of intracellular Ca(2+).
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Affiliation(s)
- H T Guo
- Department of Physioloy, Fourth Military Medical University, Xi an 710032
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Abstract
The host response to gram-negative endotoxin is characterized by an influx of inflammatory cells into host tissues, mediated in part by localized production of chemokines. In this study, using subtractive suppression hybridization analysis, we demonstrate that ANA-1 murine macrophages produce the CC chemokine, MIP-1gamma, in response to LPS-mediated NO production. Gene transcription and protein translation are upregulated in the setting of LPS-induced NO synthesis. However, NO alone is a necessary but insufficient cofactor for induction of MIP-1gamma protein expression; an NO-independent LPS signalling pathway is also required. This study suggests a novel mechanism by which NO modulates the host inflammatory response to endotoxin.
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Affiliation(s)
- H T Guo
- Department of Surgery, Georgetown University Hospital, Washington, DC, 20007, USA
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Liu GT, Qian YZ, Zhang P, Dong WH, Qi YM, Guo HT. Etiological role of Alternaria alternata in human esophageal cancer. Chin Med J (Engl) 1992; 105:394-400. [PMID: 1499370] [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: 12/27/2022] Open
Abstract
In this paper, the mutagenicity and carcinogenicity of alternariol monomethyl ether (AME), alternariol (AOH), and their relevance to the etiology of human esophageal cancer were studied. These mycotoxins were produced by Alternaria alternata which was the main contaminating fungi isolated from the grain in Linxian County, an area with high incidence of esophageal cancer. This study demonstrated that: 1. AME and AOH might cause cell mutagenicity and transformation; 2. AME and AOH could combine with the DNA isolated from human fetal esophageal epithelium, activate the oncogens, c-H-ras and c-mys in it, and promote proliferation of human fetal esophageal epithelium in vitro; 3. squamous cell carcinoma of the fetal esophagus could be induced by AOH. According to the results of the studies of AME and AOH mentioned above, we consider that Alternaria alternata plays an important role in the etiology of human esophageal cancer.
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Affiliation(s)
- G T Liu
- Department of Pathophysiology, Henan Medical University, Zhengzhou
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