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Yang W, Zhang C, Liu LB, Bian ZZ, Chang JT, Fan DY, Gao N, Wang PG, An J. Immunocompetent mouse models revealed that S100A4 + monocytes/macrophages facilitate long-term Zika virus infection in the testes. Emerg Microbes Infect 2024; 13:2300466. [PMID: 38164719 PMCID: PMC10773650 DOI: 10.1080/22221751.2023.2300466] [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] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
During its global epidemic, Zika virus (ZIKV) attracted widespread attention due to its link with various severe neurological symptoms and potential harm to male fertility. However, the understanding of how ZIKV invades and persists in the male reproductive system is limited due to the lack of immunocompetent small animal models. In this study, immunocompetent murine models were generated by using anti-IFNAR antibody blocked C57BL/6 male mice and human STAT2 (hSTAT2) knock in (KI) male mice. After infection, viral RNA could persist in the testes even after the disappearance of viremia. We also found a population of ZIKV-susceptible S100A4+ monocytes/macrophages that were recruited into testes from peripheral blood and played a crucial role for ZIKV infection in the testis. By using single-cell RNA sequencing, we also proved that S100A4+ monocytes/macrophages had a great impact on the microenvironment of ZIKV-infected testes, thus promoting ZIKV-induced testicular lesions. In conclusion, this study proposed a novel mechanism of long-term ZIKV infection in the male reproductive system.
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Affiliation(s)
- Wei Yang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
| | - Chen Zhang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
| | - Li-Bo Liu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
| | - Zhan-Zhan Bian
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
| | - Jia-Tong Chang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
| | - Dong-Ying Fan
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
| | - Na Gao
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
| | - Pei-Gang Wang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
| | - Jing An
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, People’s Republic of China
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Abstract
Single-cell RNA sequencing (scRNA-seq) has allowed for the profiling of host and virus transcripts and host-virus interactions at single-cell resolution. This review summarizes the existing scRNA-seq technologies together with their strengths and weaknesses. The applications of scRNA-seq in various virological studies are discussed in depth, which broaden the understanding of the immune atlas, host-virus interactions, and immune repertoire. scRNA-seq can be widely used for virology in the near future to better understand the pathogenic mechanisms and discover more effective therapeutic strategies.
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Affiliation(s)
- Jia-Tong Chang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Li-Bo Liu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China
| | - Pei-Gang Wang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
| | - Jing An
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, China.
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3
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Liu LB, Yang W, Chang JT, Fan DY, Wu YH, Wang PG, An J. Zika virus infection leads to hormone deficiencies of the hypothalamic-pituitary-gonadal axis and diminished fertility in mice. J Virol 2023; 97:e0100623. [PMID: 37732785 PMCID: PMC10617514 DOI: 10.1128/jvi.01006-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 08/03/2023] [Indexed: 09/22/2023] Open
Abstract
IMPORTANCE Zika virus (ZIKV) infection in pregnant women during the third trimester can cause neurodevelopmental delays and cryptorchidism in children without microcephaly. However, the consequences of congenital ZIKV infection on fertility in these children remain unclear. Here, using an immunocompetent mouse model, we reveal that congenital ZIKV infection can cause hormonal disorders of the hypothalamic-pituitary-gonadal axis, leading to reduced fertility and decreased sexual preference. Our study has for the first time linked the hypothalamus to the reproductive system and social behaviors after ZIKV infection. Although the extent to which these observations in mice translate to humans remains unclear, these findings did suggest that the reproductive health and hormone levels of ZIKV-exposed children should receive more attention to improve their living quality.
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Affiliation(s)
- Li-Bo Liu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Wei Yang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Department of Neurosurgery, Capital Medical University Sanbo Brain Hospital, Beijing, China
| | - Jia-Tong Chang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Dong-Ying Fan
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yan-Hua Wu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Pei-Gang Wang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jing An
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing, China
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4
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Wei ZR, Dong Y, Li GS, Liu LB. [Research advances on the mechanism of oral mucosal stem cells in promoting wound healing]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:496-500. [PMID: 37805762 DOI: 10.3760/cma.j.cn501225-20220730-00321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
Wound healing is a complex process that requires the participation of multiple cells and cytokines. During the process of wound healing, abnormality in any stage of the process may lead to the development of a chronic refractory wound. Research has confirmed that various stem cells can promote wound healing, but some stem cells are limited in clinical application due to difficulties in isolation, susceptibility to apoptosis, ethical and legal issues. Oral mucosal stem cells (OMSCs) can avoid the above problems. This type of stem cells has the characteristics of embryonic stem cells, immune regulatory ability, and strong homogeneity. It plays an important role in the process of scarless oral wound healing, and has become a research hotspot in promoting wound healing and reducing scar formation. This article reviews the research on the mechanism, clinical application prospects, and current problems of OMSCs in promoting wound healing.
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Affiliation(s)
- Z R Wei
- Department of Plastic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Dong
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg, Heidelberg 69120, Germany
| | - G S Li
- Department of Plastic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L B Liu
- Department of Plastic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Yang W, Liu LB, Liu FL, Wu YH, Zhen ZD, Fan DY, Sheng ZY, Song ZR, Chang JT, Zheng YT, An J, Wang PG. Single-cell RNA sequencing reveals the fragility of male spermatogenic cells to Zika virus-induced complement activation. Nat Commun 2023; 14:2476. [PMID: 37120617 PMCID: PMC10148584 DOI: 10.1038/s41467-023-38223-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 04/21/2023] [Indexed: 05/01/2023] Open
Abstract
Zika virus (ZIKV) is a potential threat to male reproductive health but the mechanisms underlying its influence on testes during ZIKV infection remain obscure. To address this question, we perform single-cell RNA sequencing using testes from ZIKV-infected mice. The results reveal the fragility of spermatogenic cells, especially spermatogonia, to ZIKV infection and show that the genes of the complement system are significantly upregulated mainly in infiltrated S100A4 + monocytes/macrophages. Complement activation and its contribution to testicular damage are validated by ELISA, RT‒qPCR and IFA and further verify in ZIKV-infected northern pigtailed macaques by RNA genome sequencing and IFA, suggesting that this might be the common response to ZIKV infection in primates. On this basis, we test the complement inhibitor C1INH and S100A4 inhibitors sulindac and niclosamide for their effects on testis protection. C1INH alleviates the pathological change in the testis but deteriorates ZIKV infection in general. In contrast, niclosamide effectively reduces S100A4 + monocyte/macrophage infiltration, inhibits complement activation, alleviates testicular damage, and rescues the fertility of male mice from ZIKV infection. This discovery therefore encourages male reproductive health protection during the next ZIKV epidemic.
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Affiliation(s)
- Wei Yang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Li-Bo Liu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Feng-Liang Liu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650107, China
| | - Yan-Hua Wu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Zi-Da Zhen
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Dong-Ying Fan
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Zi-Yang Sheng
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Zheng-Ran Song
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Jia-Tong Chang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Yong-Tang Zheng
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, 650107, China.
| | - Jing An
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China.
- Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing, 100093, China.
| | - Pei-Gang Wang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China.
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Yang W, Zhang C, Wu YH, Liu LB, Zhen ZD, Fan DY, Song ZR, Chang JT, Wang PG, An J. Mice 3D testicular organoid system as a novel tool to study Zika virus pathogenesis. Virol Sin 2023; 38:66-74. [PMID: 36241087 PMCID: PMC10006202 DOI: 10.1016/j.virs.2022.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 10/08/2022] [Indexed: 11/05/2022] Open
Abstract
Zika virus (ZIKV) poses a serious threat to global public health due to its close relationship with neurological and male reproductive damage. However, deficiency of human testicular samples hinders the in-depth research on ZIKV-induced male reproductive system injury. Organoids are relatively simple in vitro models, which could mimic the pathological changes of corresponding organs. In this study, we constructed a 3D testicular organoid model using primary testicular cells from adult BALB/c mice. Similar to the testis, this organoid system has a blood-testis barrier (BTB)-like structure and could synthesize testosterone. ZIKV tropism of testicular cells and ZIKV-induced pathological changes in testicular organoid was also similar to that in mammalian testis. Therefore, our results provide a simple and reproducible in vitro testicular model for the investigations of ZIKV-induced testicular injury.
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Affiliation(s)
- Wei Yang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China; Department of Neurosurgery, Capital Medical University Sanbo Brain Hospital, Beijing, 100093, China
| | - Chen Zhang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Yan-Hua Wu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Li-Bo Liu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Zi-Da Zhen
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Dong-Ying Fan
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Zheng-Ran Song
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Jia-Tong Chang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Pei-Gang Wang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China.
| | - Jing An
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China; Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing, 100093, China.
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Liu LB, Huang SH, Qiu HL, Cen XF, Guo YY, Li D, Ma YL, Xu M, Tang QZ. Limonin stabilises SIRT6 by activating USP10 in cardiac hypertrophy. Br J Pharmacol 2022; 179:4516-4533. [PMID: 35727596 DOI: 10.1111/bph.15899] [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] [Received: 09/06/2021] [Revised: 04/20/2022] [Accepted: 05/09/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Limonin, a natural tetracyclic triterpenoid extract, exerts extensive pharmacological effects; however, its role in cardiac hypertrophy remains to be elucidated. We investigated the beneficial effects of limonin on cardiac hypertrophy and explored the potential mechanisms. EXPERIMENTAL APPROACH C57/BL6 male mice were subjected to aortic banding (AB) surgery and neonatal rat cardiac myocytes (NRCMs) were stimulated with phenylephrine (PE) to evaluate the effects of limonin on cardiac hypertrophy. KEY RESULTS Limonin markedly improved the cardiac function and heart weight in AB operation mice. In addition, limonin-treated mice and NRCMs produced fewer cardiac hypertrophy markers than those treated with the vehicle in hypertrophic groups. Sustained AB- or PE-stimulation impaired cardiac sirtuin 6 (SIRT6) protein levels, which were partially rescued by limonin and subsequently enhanced the activity of PPARα, and Sirt6 siRNA inhibited the anti-hypertrophic effects of limonin in vitro. Interestingly, limonin did not influence Sirt6 mRNA levels, but controlled its ubiquitin levels. Thus, the protein biosynthesis inhibitor, cycloheximide (CHX), and proteasome inhibitor, MG-132, were used to determine SIRT6 protein expression levels. Under PE stimulation, limonin increased SIRT6 protein levels in the presence of CHX, but it didn't influence SIRT6 expression in the presence of MG-132, suggesting that limonin promotes SIRT6 abundance by inhibiting its ubiquitination degradation. Furthermore, limonin inhibited the degradation of SIRT6 by activating ubiquitin-specific peptidase (Cuspidi et al.)-10, while USP10 siRNA abrogated the beneficial effects of limonin. CONCLUSION AND IMPLICATIONS Limonin mediates the ubiquitination and degradation of SIRT6 by activating USP10, providing an attractive therapeutic target for cardiac hypertrophy.
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Affiliation(s)
- Li-Bo Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Si-Hui Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Hong-Liang Qiu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Xian-Feng Cen
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Ying-Ying Guo
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Dan Li
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Yu-Lan Ma
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Man Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, PR China
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Wang P, Ma T, Liu LB, Shang C, An P, Xue YX. A Comparison of the Effectiveness of Online Instructional Strategies Optimized With Smart Interactive Tools Versus Traditional Teaching for Postgraduate Students. Front Psychol 2021; 12:747719. [PMID: 35002844 PMCID: PMC8732756 DOI: 10.3389/fpsyg.2021.747719] [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: 07/26/2021] [Accepted: 12/03/2021] [Indexed: 11/30/2022] Open
Abstract
To solve the problem that lack of interaction in online courses affects motivation and effectiveness of students' learning, smart interactive tools were introduced into the online Neurobiology course. This study aimed to evaluate the students' satisfaction with online teaching mode and assess the academically higher and lower performing students' learning effectiveness in the online course optimized with smart interactive tools compared to face-to-face learning. Descriptive statistics and independent t-tests were used to describe student samples and determine the differences in students' satisfaction and performance. Reflections of students' satisfaction revealed that about 65.8% were satisfied with the learning involvement and about 60.5% were satisfied with the class interaction. Almost two-thirds of the class agreed that the smart interactive tools applied in the online course could help them attain their learning goals better. Among all the smart interactive functions, the class quiz was the most effective one in helping students grasp the main points of the course. No significant differences were found between the two teaching modes in the overall and academically higher or lower performing students' final exam average scores. Compared to each band score of such two teaching modes, no one failed to pass the final exam in the online course, however, three lower-performing students who were taught in the traditional course failed. This study suggested that optimized online teaching with smart interactive tools could produce the same learning effectiveness for the academically lower-performing students as for the higher-performing students. Meanwhile, the instructors could know the learning status in which each student was and perform personalized guidance and improve exam passing rate accordingly.
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Affiliation(s)
| | | | | | | | | | - Yi-Xue Xue
- Department of Neurobiology, School of Life Sciences, China Medical University, Shenyang, China
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9
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Liu LB, Li M, Gao N, Shen JY, Sheng ZY, Fan DY, Zhou HN, Yin XX, Mao JR, Jiang JY, Wang PG, An J. Epidemiological and clinical characteristics of the chikungunya outbreak in Ruili City, Yunnan Province, China. J Med Virol 2021; 94:499-506. [PMID: 34453756 DOI: 10.1002/jmv.27302] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 01/20/2023]
Abstract
Chikungunya fever is an acute infectious disease caused by the chikungunya virus (CHIKV) that is characterized by fever, rash, and joint pain. CHIKV has infected millions of people in Africa, Asia, America, and Europe since it re-emerged in the Indian Ocean region in 2004. Here, we report an outbreak of Chikungunya fever that occurred in Ruili of Yunnan Province, a city located on the border between China and Myanmar, in September 2019. The outbreak lasted for three months from September to December. Overall, 112 cases were confirmed by a real-time reverse-transcription polymerase chain reaction in the Ruili People's Hospital, and they showed apparent temporal, spatial, and population aggregation. Among them, 91 were local cases distributed in 19 communities of Ruili City, and 21 were imported cases. The number of female patients was higher than that of male patients, and most patients were between 20 and 60 years old. The main clinical manifestations included joint pain (91.96%), fever (86.61%), fatigue (58.04%), chills (57.14%), rash (48.21%), headache (39.29%), and so forth. Biochemical indexes revealed increased C-reactive protein (63.39%), lymphopenia (57.17%), increased hemoglobin (33.04%), neutrophilia (28.57%), and thrombocytopenia (16.07%). Phylogenetic analysis of the complete sequences indicated that the CHIKV strains in this outbreak belonged to the Indian Ocean clade of the East/Central/South African genotype. We speculated that this chikungunya outbreak might be caused by CHIKV-infected persons returning from Myanmar, and provided a reference for the formulation of effective treatment and prevention measures.
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Affiliation(s)
- Li-Bo Liu
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Man Li
- Yunnan Institute of Parasitic Diseases, Simao Pu'er, Yunnan, China.,Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research and Yunnan Provincial Collaborative Innovation Center for Public Health and Disease Prevention and Control (YPCICPHDPC), Simao Pu'er, Yunnan, China
| | - Na Gao
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jia-Yuan Shen
- Yunnan Institute of Parasitic Diseases, Simao Pu'er, Yunnan, China.,Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research and Yunnan Provincial Collaborative Innovation Center for Public Health and Disease Prevention and Control (YPCICPHDPC), Simao Pu'er, Yunnan, China
| | - Zi-Yang Sheng
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Dong-Ying Fan
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Hong-Ning Zhou
- Yunnan Institute of Parasitic Diseases, Simao Pu'er, Yunnan, China.,Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research and Yunnan Provincial Collaborative Innovation Center for Public Health and Disease Prevention and Control (YPCICPHDPC), Simao Pu'er, Yunnan, China
| | - Xiao-Xiong Yin
- Ruili Center for Disease Control and Prevention, Ruili, Yunnan, China
| | | | - Jin-Yong Jiang
- Yunnan Institute of Parasitic Diseases, Simao Pu'er, Yunnan, China.,Yunnan Provincial Key Laboratory of Vector-borne Diseases Control and Research and Yunnan Provincial Collaborative Innovation Center for Public Health and Disease Prevention and Control (YPCICPHDPC), Simao Pu'er, Yunnan, China
| | - Pei-Gang Wang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Jing An
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
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10
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Li XC, Liu XH, Liu LB, Li SM, Wang YQ, Mead RH. Evaluation of left ventricular systolic function using synchronized analysis of heart sounds and the electrocardiogram. Heart Rhythm 2020; 17:876-880. [PMID: 32354453 DOI: 10.1016/j.hrthm.2020.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 01/16/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Heart failure is a major health concern and often requires echocardiography to confirm the diagnosis. We introduce a new method that uses a wearable heart sound and electrocardiogram (ECG) device that can be used in the outpatient setting. OBJECTIVE The purpose of this study was to determine the value of synchronized analysis of heart sounds and ECG in identifying patients with depressed left ventricular ejection fraction (dLVEF) <50%. METHODS One hundred eighty-nine patients (76 with dLVEF; 113 with normal ejection fraction) were enrolled. All were admitted to the hospital because of dyspnea or chest discomfort. N-Terminal pro-B-type natriuretic peptide (NT-proBNP) was measured in all patients. LVEF was determined by echocardiography. Heart sound and ECG signals were simultaneously recorded using the wearable synchronized phonocardiogram and ECG device. Heart sound and ECG signals were automatically analyzed using wavelet analysis and utilized to determine electromechanical activation time (EMAT), EMAT/RR, S1-S2 time, and S1-S2/RR. RESULTS EMAT in the dLVEF group was significantly higher than that in the control group (159.82 ± 83 ms vs 91.58 ± 28 ms). Pearson correlation test showed a negative correlation between EMAT and LVEF (r = -0.449; P <.001). Receiver operating characteristic curve analysis demonstrated that the sensitivity and specificity of EMAT ≥104 ms for the diagnosis of EF <50% were 92.1% and 92%, respectively. Patients with intermediate NT-proBNP values were identified as dLVEF by EMAT ≥104 ms, with sensitivity of 93.5% and specificity of 92.8%. CONCLUSION The heart sound and ECG signal index EMAT contributes to the diagnosis of EF <50% and is especially helpful in patients with an inconclusive NT-proBNP value.
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Affiliation(s)
- Xiu-Chang Li
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People's Republic of China.
| | - Xiao-Hong Liu
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People's Republic of China
| | - Li-Bo Liu
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People's Republic of China
| | - Su-Mei Li
- School Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People's Republic of China
| | - Yue-Qiang Wang
- Department of Cardiology, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, People's Republic of China
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11
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Huang HW, Yan B, Shang MX, Liu LB, Hao H, Xi ZJ. [Propensity-matched comparison of laparoscopic and open radical cystectomy for female patients with bladder cancer]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:698-705. [PMID: 31420625 DOI: 10.19723/j.issn.1671-167x.2019.04.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To compare the perioperative and oncologic outcomes of female patients receiving laparoscopic radical cystectomy (LRC) and open radical cystectomy (ORC). METHODS Retrospective review of 91 consecutive female patients with urothelial carcinoma of bladder undergoing radical cystectomy at a single academic institution from 2006 to 2017. Those female patients received open radical cystectomy were matched to the patients who underwent laparoscopic radical cystectomy by using propensity score matching in 1 ∶1 ratio. The matching factors included age, body mass index (BMI), American Society of Anesthesiologists (ASA) score, pathologic stage and pathologic nodal stage. The perioperation and oncology characteristics were compared, and Kaplan-Meier method was used to analyze the overall survival (OS), cancer specific survival (CSS) and progression-free survival (PFS) estimates. Finally, we did a sensitive analysis by using multivariable COX regression of all the patients, adjusting for the matching factors. RESULTS There were 65 ORC and 26 LRC patients identified in this cohort with urothelial carcinoma of bladder, the median follow-up time was 38 months (interquartile range 18-69). The age (P<0.001) and ASA scores (P=0.018) were less for LRC before being matched. There were 22 LRC and 22 ORC patients matching successfully. Before being matched, the estimate blood loss (P=0.005), transfusion rate (P<0.001) and total complications rate (P=0.015) were less for LRC, and the lymph nodes yield was greater for LRC, but there were no differences in OS (P=0.698), CSS (P=0.942) and PFS (P=0.837) between the two groups. After being matched, the estimate blood loss (P=0.009), transfusion rate (P=0.001) and total complications rate (P=0.040) were less for LRC, but there was no difference in the lymph nodes yield. Besides, there were no statistic differences in OS (P=0.432), CSS (P=0.429) and PFS (P=0.284) between the two groups. In addition, in multivariable COX regression analysis, surgical approaches (LRC/ORC) were not found to be a predictor of OS (HR 1.134, 95%CI 0.335-3.835, P=0.839), CSS (HR 1.051, 95%CI 0.234-4.719, P=0.949) and PFS (HR 0.538, 95%CI 0.138-2.095, P=0.371) of the female patients with urothelial carcinoma of bladder. CONCLUSION It is advantageous for laparoscopic radical cystectomy in terms of estimating blood loss, transfusion rate and complication rate. But there was no evidence that laparoscopic radical cystectomy for female patients with bladder cancer had a better oncologic prognosis than open radical cystectomy from this study.
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Affiliation(s)
- H W Huang
- epartment of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - B Yan
- Department of Urology, Xingtai People's Hospital, Xingtai 054001, Hebei, China
| | - M X Shang
- Department of Medical Statistics, Peking University First Hospital, Beijing 100034, China
| | - L B Liu
- epartment of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - H Hao
- epartment of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Z J Xi
- epartment of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
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Wang HB, Huang R, Yang K, Xu M, Fan D, Liu MX, Huang SH, Liu LB, Wu HM, Tang QZ. Identification of differentially expressed genes and preliminary validations in cardiac pathological remodeling induced by transverse aortic constriction. Int J Mol Med 2019; 44:1447-1461. [PMID: 31364721 PMCID: PMC6713409 DOI: 10.3892/ijmm.2019.4291] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Accepted: 07/09/2019] [Indexed: 02/06/2023] Open
Abstract
Cardiac remodeling predisposes to heart failure if the burden is unresolved, and heart failure is an important cause of mortality in humans. The aim of the present study was to identify the key genes involved in cardiac pathological remodeling induced by pressure overload. Gene expression profiles of the GSE5500, GSE18224, GSE36074 and GSE56348 datasets were downloaded from the Gene Expression Omnibus database. Differentially expressed genes (DEGs), defined as |log2FC|>1 (FC, fold change) and an adjusted P‑value of <0.05, were screened using the R software with the limma package. Gene ontology enrichment analysis was performed and a protein‑protein interaction (PPI) network of the DEGs was constructed. A cardiac remodeling model induced by transverse aortic constriction (TAC) was established. Furthermore, consistent DEGs were further validated using reverse transcription‑quantitative polymerase chain reaction (RT‑PCR) analysis, western blotting and immunohistochemistry in the ventricular tissue samples after TAC or sham operation. A total of 24 common DEGs were identified (23 significantly upregulated and 1 downregulated), of which 9 genes had been previously confirmed to be directly involved in cardiac remodeling. Hence, the level of expression of the other 15 genes was detected in subsequent studies via RT‑PCR. Based on the results of the PPI network analysis and RT‑PCR, we further detected the protein levels of Itgbl1 and Asporin, which were consistent with the results of bioinformatics analysis and RT‑PCR. The expression of Itgbl1, Aspn, Fstl1, Mfap5, Col8a1, Ltbp2, Mfap4, Pamr1, Cnksr1, Aqp8, Meox1, Gdf15 and Srpx was found to be upregulated in a mouse model of cardiac remodeling, while that of Retnla was downregulated. Therefore, the present study identified the key genes implicated in cardiac remodeling, aiming to provide new insight into the underlying mechanism.
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Affiliation(s)
- Hui-Bo Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Rong Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Kang Yang
- Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Man Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Di Fan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Ming-Xin Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Si-Hui Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Li-Bo Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Hai-Ming Wu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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13
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Wang HB, Duan MX, Xu M, Huang SH, Yang J, Yang J, Liu LB, Huang R, Wan CX, Ma ZG, Wu QQ, Tang QZ. Cordycepin ameliorates cardiac hypertrophy via activating the AMPKα pathway. J Cell Mol Med 2019; 23:5715-5727. [PMID: 31225721 PMCID: PMC6653598 DOI: 10.1111/jcmm.14485] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 01/29/2019] [Revised: 04/30/2019] [Accepted: 05/19/2019] [Indexed: 02/06/2023] Open
Abstract
Increase of myocardial oxidative stress is closely related to the occurrence and development of cardiac hypertrophy. Cordycepin, also known as 3'-deoxyadenosine, is a natural bioactive substance extracted from Cordyceps militaris (which is widely cultivated for commercial use in functional foods and medicine). Since cordycepin suppresses oxidative stress both in vitro and in vivo, we hypothesized that cordycepin would inhibit cardiac hypertrophy by blocking oxidative stress-dependent related signalling. In our study, a mouse model of cardiac hypertrophy was induced by aortic banding (AB) surgery. Mice were intraperitoneally injected with cordycepin (20 mg/kg/d) or the same volume of vehicle 3 days after-surgery for 4 weeks. Our data demonstrated that cordycepin prevented cardiac hypertrophy induced by AB, as assessed by haemodynamic parameters analysis and echocardiographic, histological and molecular analyses. Oxidative stress was estimated by detecting superoxide generation, superoxide dismutase (SOD) activity and malondialdehyde levels, and by detecting the protein levels of gp91phox and SOD. Mechanistically, we found that cordycepin activated activated protein kinase α (AMPKα) signalling and attenuated oxidative stress both in vivo in cordycepin-treated mice and in vitro in cordycepin treated cardiomyocytes. Taken together, the results suggest that cordycepin protects against post-AB cardiac hypertrophy through activation of the AMPKα pathway, which subsequently attenuates oxidative stress.
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Affiliation(s)
- Hui-Bo Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China.,Department of Cardiology, The First College of Clinical Medical Science, China Three Gorges University, Yichang, PR China.,Institute of Cardiovascular Diseases, China Three Gorges University, Yichang, PR China
| | - Ming-Xia Duan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
| | - Man Xu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
| | - Si-Hui Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
| | - Jun Yang
- Department of Cardiology, The First College of Clinical Medical Science, China Three Gorges University, Yichang, PR China.,Institute of Cardiovascular Diseases, China Three Gorges University, Yichang, PR China
| | - Jian Yang
- Department of Cardiology, The First College of Clinical Medical Science, China Three Gorges University, Yichang, PR China.,Institute of Cardiovascular Diseases, China Three Gorges University, Yichang, PR China
| | - Li-Bo Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
| | - Rong Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
| | - Chun-Xia Wan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
| | - Zhen-Guo Ma
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
| | - Qing-Qing Wu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, PR China.,Hubei Key Laboratory of Metabolic and Chronic Diseases, Wuhan, RP China
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14
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Wang ST, Liu LB, Li XM, Wang YF, Xie PJ, Li Q, Wang R, Wei Q, Kang YH, Meng R, Feng XH. Circ-ITCH regulates triple-negative breast cancer progression through the Wnt/β-catenin pathway. Neoplasma 2018; 66:232-239. [PMID: 30509108 DOI: 10.4149/neo_2018_180710n460] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 09/12/2018] [Indexed: 11/08/2022]
Abstract
Recent studies indicate that circular RNA (circRNA) is involved in tumorigenesis, but its role in triple-negative breast cancer (TNBC) remains largely unknown. In this study, we characterized the role of circ-ITCH in TNBC and found that circ-ITCH was significantly down-regulated in TNBC tissues and cell lines and closely associated with poor prognosis. We therefore constructed the MDA-MB-231 and BT-549 TNBC cell lines stably expressing circ-ITCH by lentiviral vectors to determine its underlying mechanisms in TNBC progression. Most importantly, over-expression of circ-ITCH remarkably inhibited TNBC proliferation, invasion and metastasis both in vitro and in vivo. Mechanistically, we found that circ-ITCH acts as a sponge for miR-214 and miR-17 to increase expression of its ITCH linear isoform, thereby inactivating Wnt/β-catenin signaling. Our combined results show for the first time that circ-ITCH is a tumor suppressor, a promising prognostic biomarker in TNBC and that its restoration could well be a successful strategy in TNBC.
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Affiliation(s)
- S T Wang
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - L B Liu
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - X M Li
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - Y F Wang
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - P J Xie
- Department of Internal Medicine, The First Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Q Li
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - R Wang
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - Q Wei
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - Y H Kang
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - R Meng
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
| | - X H Feng
- Department of Clinical Medicine, School of Medicine, Peihua University, Xi'an, China
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15
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Jia Z, Zhang CJ, Xi CG, Gong YQ, Yang KW, Peng D, Liu LB, Li J, Li XS, He ZS, Zhou LQ. [Clinical features analysis of metanephric adenoma: a series of 16 cases]. Zhonghua Wai Ke Za Zhi 2018. [PMID: 29534419 DOI: 10.3760/cma.j.issn.0529-5815.2018.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the clinical characteristics, image findings, therapeutic method and prognosis of metanephric adenoma. Method: The clinical characteristic, image findings, operation methods and prognosis of 16 metanephric adenoma patients treated at Department of Urology, Peking University First Hospital from January 2004 to March 2016 were analyzed retrospectively. Results: There were 6 male and 10 female patients in the study. The mean age of patients was 33.7 years (ranging from 14 to 83 years). Two patients came to the hospital because of fever, while other 14 patients had no symptoms and found renal tumor by medical examination. One case was found polythemia vera and another 1 case showed mild anemia. Serum creatine of all the cases were in normal range. The tumor of 11 cases were at left side and 5 cases were at right. All patients took urinary tract ultrasound. Fifteen patients took CT examination. Among them, 14 cases were solid mass and 1 case was cystosolid.CT value was (41±4) HU. CT scan showed that the tumor was slight enhanced and CT value increased to (77±9) HU. Six patients took MRI examination. The MRI showed high or low signal of T1WI or T2WI scans.Tumor size was (4.7±3.9)cm (ranging from 1.7 to 17.5 cm). All 16 patients took operation and 11 of them took laparoscopic surgery while the other 5 cases took open surgery. Eleven cases took partial nephrectomy, 4 cases took nephrectomy and 1 case took nephroureterectomy. The surgical procedures were all successful and no complications occured during perioperative period. All cases were all confirmed metanephric adenoma by postoperative pathology and surgery cut edge were all negative. Immunohistochemical study showed that the positive rate of Vimentin, CD57, AE1/AE3, WT1, CK7 and AMACR respectively were 16/16, 15/16, 12/16, 10/16, 3/16 and 2/16. The median follow-up time of 16 cases was 44 months (ranging from 8 to 125 months) and none had recurrence or metastasis.One case died 125 months after surgery because of advanced age(83 years old). Conclusions: Metanephric adenoma is difficult to be diagnosed relying on clinical characteristics and image features. Pathology can help confirm the diagnosis. Partial nephrectomy is the first choice for operation and can achieve good prognosis. But it still needs a regular follow-up.
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Affiliation(s)
- Z Jia
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, Beijing 100034, China
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Fu XN, Liu LB, Liu XL, Zong PJ. [Composite hemangioendothelioma of the parotid gland: a case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 52:948-949. [PMID: 29262459 DOI: 10.3760/cma.j.issn.1673-0860.2017.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- X N Fu
- Department of Pathology, Weifang Yidu Central Hospital, Weifang 262500, China
| | - L B Liu
- Department of Pathology, Weifang Yidu Central Hospital, Weifang 262500, China
| | - X L Liu
- Department of Pathology, Weifang Yidu Central Hospital, Weifang 262500, China
| | - P J Zong
- Department of Pathology, Weifang Yidu Central Hospital, Weifang 262500, China
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17
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Guan B, Cao ZP, Peng D, Li YF, Zhan YH, Liu LB, He SM, Xiong GY, Li XS, Zhou LQ. [Prognostic factors of patients with T2N0M0 upper tract urothelial carcinoma: a single-center retrospective study of 235 patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:603-607. [PMID: 28816273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To evaluate the impacts of the prognostic factors of T2N0M0 upper tract urothelial carcinoma (UTUC) for Chinese patients. METHODS A retrospective study was conducted including 235 patients who were diagnosed with T2N0M0 UTUC in our hospital and received radical nephroureterectomy (RNU) or partial ureterectomy during January 2000 and December 2013. The 3 and 5-year cancer-specific survival rates and bladder recurrence-free survival rates of all the patients were valued using Kaplan-Meier method, and the survival curves with statistical significance between the two were compared using the Log-rank test. Variables with significant differences in the univariate analysis were subjected to the multivariate analysis by Cox regression model. RESULTS A total of 235 patients were included in this study, including 95 (40.4%) male patients and 140 (59.6%) female patients. The mean age was 66.73±10.49 years.The median follow-up time was 53 (rang: 3-142) months, and during the follow-up, 74 (31.5%) patients died of UTUC after a median of 35 months,and 96 (40.9%) patients developed intravesical recurrence after a median of 19.5 months. The 3 and 5-year cancer-specific survival rates of all the patients were 89.1% and 85.9%, respectively; the bladder recurrence-free survival rates were 85.5% and 80.2%, respectively. The independent prognostic factors of cancer-specific mortality were tumor age elder than 55 years (HR=3.138, 95%CI: 1.348-7.306, P=0.008) and diameter larger than 5 cm (HR=3.320, 95%CI: 1.882-5.857, P<0.001). The independent prognostic factors of bladder recurrence-free survival were ureter tumor (HR=1.757, 95%CI: 1.159-2.664, P=0.008) and lower tumor grade (HR=1.760, 95% CI: 1.151-2.692, P=0.009). CONCLUSION T2N0M0 UTUC has a better cancer-specific survival. The intravesical recurrence was equivalent to non-muscle invasive UTUC but earlier. The tumor diameter larger than 5 cm and the patient age elder than 55 years were independently associated with cancer-specific mortality; the primary tumor located in ureter and lower tumor grade were more likely to develop intravesical recurrence.
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Affiliation(s)
- B Guan
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - Z P Cao
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - D Peng
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - Y F Li
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - Y H Zhan
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - L B Liu
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - S M He
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - G Y Xiong
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - X S Li
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
| | - L Q Zhou
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center; Beijing 100034, China
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Liu Z, Luo C, Hu S, Fan Y, Liu ZH, Yang XY, Shen Q, Liu LB, Han WK, Zhou LQ, Yu W, He Q, Zhang Q, Jin J. [Diagnosis and treatment of T1a-T1b prostate cancer]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:812-816. [PMID: 27752161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To explore the clinical pathological characteristics and improve the recognition in the diagnosis and treatment of incidental (stage T1a-T1b) prostate cancer. METHODS Seven hundred and seventy-one patients who underwent TURP from May 2004 to September 2013 were analyzed retrospectively. In our institution, TURP specimens should be totally submitted in an extensive sampling method. The tumor area was outlined by estimation of an experienced genitourinary pathologist and calculated by the image analysis system software (Image J 1.47 h). The tumor area was then multiplied by the thickness of tissue. The total sum of all tumor volume was the estimated tumor volume. The clinical and pathological factors, follow-up results were obtained and we aimed to collect information about the period of watchful waiting (WW), PSA progression status, intervention status during the follow-up, the reason for intervention on WW and the type of intervention. RESULTS The average age of 771 patients was (71.3±5.9) years old, and the average BMI was (23.9±3.1) kg/m2, preoperative average tPSA was (4.4±2.8) μg/L. Eighty-six (11.2%) cases of incidental prostate cancer were detected. The patients in T1a group (77 cases, 89.5%) had tumor volumes of (12.3±12.6) mm3, and the patients in T1b group had tumor volumes of (105.1±41.8) mm3.The range of tumor volume was 0.4-180.2 mm3. The volume of all the 86 cases was less than 500 mm3 as the threshold of insignificant cancer. All the patients were managed by WW. The mean follow-up time was 88.9 (27.9-150.1) months.The Gleason score was <7 in 79 patients, and ≥7 in 7 patients. There was no significant difference in age, preoperative tPSA, preoperative PSAD, postoperative tPSA, prostate volume and TURP resection between T1a group and T1b group (P>0.05). Among 84 patients without follow-up losts, PSA progression occurred in 5 patients. One T1a patient underwent radical prostatectomy (RP) as an intervention, and 3 patients underwent hormone therapy. One patient in T1b group underwent radiotherapy for PSA progression and one was treated because of patient preference without evidence of disease progression. There were no patients who died due to prostate cancer. CONCLUSION Eighty-six (11.2%) cases of incidental prostate cancer were detected. The tumor volume of all the cases was insignificant cancer.The clinical outcomes of IPCa were satisfactory with the initial treatment of WW in the Chinese population.
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Affiliation(s)
- Z Liu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - C Luo
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - S Hu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - Y Fan
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - Z H Liu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - X Y Yang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - Q Shen
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - L B Liu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - W K Han
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - L Q Zhou
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - W Yu
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - Q He
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - Q Zhang
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
| | - J Jin
- Department of Urology, Peking University First Hospital, Institute of Urology, Peking University, National Urological and Male Reproductive System Cancer Center, Beijing 100034, China
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Xi CG, Fan Y, Yang XY, Liu LB, Wang JH, Hu S, Li YY, He Q. [Clinicopathological features and differential diagnosis of metanephric adenoma: a report of sixteen cases]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:598-602. [PMID: 29263496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To study the clinicopathological features and differential diagnosis of metanephric adenoma (MA). METHODS The clinicopathological data of 16 cases with MA diagnosed and treated in Peking University First Hospital from 2004 to 2016 were retrospectively analyzed, and the clinical characteristics, pathologic parameters, differential diagnosis, treatment options and prognosis of MA were analyzed with literature review. RESULTS The patients included 10 females and 6 males. The age of patients ranged from 14 to 83 years (mean=33.7 years). The partial nephrectomy was carried out for most patients. All cases were located in renal codex with 3 growing into the renal sinus. Histologically, the tumor was composed of tubules, papillary or glomeruloid structures and psammoma bodies were focally seen. Immunohistochemical study showed that all the cases expressed vimentin, and 94% cases expressed CD57, 63% WT1, 75% AE1/AE3, 19% cytokeratin 7 (CK7) and 13%α-methylacyl-CoA racemase (AMACR), and negative expressions for MA included CD10, neuron-specific enolase (NSE) and CD56. Follow-up information from 1 to 125 months was available in all the patients; and none of the patients showed any evidence of recurrence and metastasis. CONCLUSION The benign tumor characteristics of MA are not obvious for preoperative imaging diagnosis, and the diagnosis of MA should be based on the unique pathological features. Positive immunostain of CD57 is a useful indicator for MA diagnosis and differential diagnosis. The partial nephrectomy surgical treatment can achieve good clinical cure with good prognosis.
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Affiliation(s)
- C G Xi
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Y Fan
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - X Y Yang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - L B Liu
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - J H Wang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - S Hu
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Y Y Li
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Q He
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
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Mao X, Zhang GF, Li C, Zhao YC, Liu Y, Wang TT, Duan CY, Wang JY, Liu LB. One-step method for the isolation of α-lactalbumin and β-lactoglobulin from cow’s milk while preserving their antigenicity. International Journal of Food Properties 2016. [DOI: 10.1080/10942912.2016.1181649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Li C, Zhang GF, Mao X, Wang JY, Duan CY, Wang ZJ, Liu LB. Growth and acid production of Lactobacillus delbrueckii ssp. bulgaricus ATCC 11842 in the fermentation of algal carcass. J Dairy Sci 2016; 99:4243-4250. [PMID: 26995135 DOI: 10.3168/jds.2015-10700] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 01/21/2016] [Indexed: 11/19/2022]
Abstract
Algal carcass is a low-value byproduct of algae after its conversion to biodiesel. Dried algal carcass is rich in protein, carbohydrate, and multiple amino acids, and it is typically well suited for growth and acid production of lactic acid bacteria. In this study, Lactobacillus delbrueckii ssp. bulgaricus ATCC 11842 was used to ferment different algal carcass media (ACM), including 2% ACM, 2% ACM with 1.9% glucose (ACM-G), and 2% ACM with 1.9% glucose and 2g/L amino acid mixture (ACM-GA). Concentrations of organic acids (lactic acid and acetic acid), acetyl-CoA, and ATP were analyzed by HPLC, and activities of lactate dehydrogenase (LDH), acetokinase (ACK), pyruvate kinase (PK), and phosphofructokinase (PFK) were determined by using a chemical approach. The growth of L. bulgaricus cells in ACM-GA was close to that in the control medium (de Man, Rogosa, and Sharpe). Lactic acid and acetic acid contents were greatly reduced when L. bulgaricus cells were grown in ACM compared with the control medium. Acetyl-CoA content varied with organic acid content and was increased in cells grown in different ACM compared with the control medium. The ATP content of L. bulgaricus cells in ACM was reduced compared with that of cells grown in the control medium. Activities of PFK and ACK of L. bulgaricus cells grown in ACM were higher and those of PK and LDH were lower compared with the control. Thus, ACM rich in nutrients may serve as an excellent substrate for growth by lactic acid bacteria, and addition of appropriate amounts of glucose and amino acids can improve growth and acid production.
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Affiliation(s)
- C Li
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Harbin, China, 150030
| | - G F Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Harbin, China, 150030
| | - X Mao
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Harbin, China, 150030
| | - J Y Wang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Harbin, China, 150030
| | - C Y Duan
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Harbin, China, 150030
| | - Z J Wang
- College of Engineering, Northeast Agricultural University, Harbin, China, 150030
| | - L B Liu
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Harbin, China, 150030.
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Zhang B, Song Y, Jin J, Zhou LQ, He ZS, Shen C, He Q, Li J, Liu LB, Wang C, Chen XY, Fan Y, Hu S, Zhang L, Yu W, Han WK. Preoperative Plasma Fibrinogen Level Represents an Independent Prognostic Factor in a Chinese Cohort of Patients with Upper Tract Urothelial Carcinoma. PLoS One 2016; 11:e0150193. [PMID: 26930207 PMCID: PMC4773108 DOI: 10.1371/journal.pone.0150193] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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: 07/06/2015] [Accepted: 11/25/2015] [Indexed: 12/27/2022] Open
Abstract
Background Increased plasma fibrinogen is thought to contribute to tumor progression and metastasis. The association of plasma fibrinogen with clinicopathological characteristics, and the optimal cutoff with an ideal predictive value has not been fully determined in patients with upper tract urothelial carcinoma (UTUC). We aimed to investigate the clinical significance of this parameter in a Chinese cohort of patients with UTUC. Methods A retrospective study was conducted to analyze the clinical data of 184 operable UTUC patients in a Chinese cohort with a high incidence of chronic kidney disease (CKD). An optimal cutoff was set for further analysis according to validated web-based software. The associations of plasma fibrinogen with clinicopathological characteristics and survival were assessed. Multivariate analyses were performed to determine the independent prognostic factors. Results Elevated plasma fibrinogen was significantly associated with tumor necrosis, lymph node involvement, and a higher preoperative CKD stage, pathological tumor stage and grade (all P < 0.05). Kaplan-Meier analysis showed that plasma fibrinogen ≥ 3.54 g/L predicted a poorer overall and cancer-specific survival than < 3.54 g/L (P < 0.001 for both). Multivariate analyses revealed that elevated preoperative plasma fibrinogen was an independent negative prognostic factor for overall survival (HR = 2.026; 95% CI: 1.226–3.349; P = 0.006) and cancer-specific survival (HR = 1.886; 95% CI: 1.019–3.490; P = 0.043). Conclusions Increased plasma fibrinogen was an independent prognostic risk factor for poor outcomes in UTUC. This parameter may serve as an effective biomarker with easy accessibility for evaluating prognosis for patients with UTUC.
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Affiliation(s)
- Bo Zhang
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Yi Song
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Jie Jin
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Li-Qun Zhou
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Zhi-Song He
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Cheng Shen
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Qun He
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Jun Li
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Li-Bo Liu
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Cong Wang
- Peking University Health Science Center, Beijing, People’s Republic of China
| | - Xiao-Yu Chen
- Peking University Health Science Center, Beijing, People’s Republic of China
| | - Yu Fan
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Shuai Hu
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Lei Zhang
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Wei Yu
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
- * E-mail: (WY); (WKH)
| | - Wen-Ke Han
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
- * E-mail: (WY); (WKH)
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Xi CG, Fan Y, Yang XY, Liu LB, Wang JH, Hu S, Li YY, He Q. [Clinicopathological features and differential diagnosis of metanephric adenoma: a report of sixteen cases]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:598-602. [PMID: 27538135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To study the clinicopathological features and differential diagnosis of metanephric adenoma (MA). METHODS The clinicopathological data of 16 cases with MA diagnosed and treated in Peking University First Hospital from 2004 to 2016 were retrospectively analyzed, and the clinical characteristics, pathologic parameters, differential diagnosis, treatment options and prognosis of MA were analyzed with literature review. RESULTS The patients included 10 females and 6 males. The age of patients ranged from 14 to 83 years (mean=33.7 years). The partial nephrectomy was carried out for most patients. All cases were located in renal codex with 3 growing into the renal sinus. Histologically, the tumor was composed of tubules, papillary or glomeruloid structures and psammoma bodies were focally seen. Immunohistochemical study showed that all the cases expressed vimentin, and 94% cases expressed CD57, 63% WT1, 75% AE1/AE3, 19% cytokeratin 7 (CK7) and 13%α-methylacyl-CoA racemase (AMACR), and negative expressions for MA included CD10, neuron-specific enolase (NSE) and CD56. Follow-up information from 1 to 125 months was available in all the patients; and none of the patients showed any evidence of recurrence and metastasis. CONCLUSION The benign tumor characteristics of MA are not obvious for preoperative imaging diagnosis, and the diagnosis of MA should be based on the unique pathological features. Positive immunostain of CD57 is a useful indicator for MA diagnosis and differential diagnosis. The partial nephrectomy surgical treatment can achieve good clinical cure with good prognosis.
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Affiliation(s)
- C G Xi
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Y Fan
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - X Y Yang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - L B Liu
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - J H Wang
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - S Hu
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Y Y Li
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
| | - Q He
- Department of Urology, Peking University First Hospital; Institute of Urology, Peking University; National Urological Cancer Center, Beijing 100034, China
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Zhang B, Yu W, Zhou LQ, He ZS, Shen C, He Q, Li J, Liu LB, Wang C, Chen XY, Fan Y, Hu S, Zhang L, Han WK, Jin J. Prognostic Significance of Preoperative Albumin-Globulin Ratio in Patients with Upper Tract Urothelial Carcinoma. PLoS One 2015; 10:e0144961. [PMID: 26681341 PMCID: PMC4682975 DOI: 10.1371/journal.pone.0144961] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [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: 07/06/2015] [Accepted: 11/25/2015] [Indexed: 12/24/2022] Open
Abstract
Background Preoperative albumin-globulin ratio (AGR) reflects both malnutrition and systemic inflammation in cancer patients. In particular, systemic inflammation has been reported to contribute to tumor progression and poor oncological outcome in various malignancies. However, the prognostic value of preoperative AGR in upper tract urothelial carcinoma (UTUC) has not been examined. Methods We retrospectively reviewed medical data of 187 operable UTUC patients in a Chinese cohort with a high incidence of chronic kidney disease (CKD). AGR was calculated as [AGR = albumin/(serum total protein—albumin)]. The associations of preoperative AGR with clinicopathologic characteristics and prognosis were assessed. Multivariate analyses using Cox regression models were performed to determine the independent prognostic factors. Results The median (IQR) preoperative AGR was 1.50 (1.30–1.70), and the optimal cutoff value was determined to be 1.45 according to the receiver operating curve analysis. Low AGR was significantly associated with female gender, high CKD stage and tumor grade (P < 0.05). Eighty-three patients died before the follow-up endpoint. Kaplan-Meier analysis showed that an AGR < 1.45 predicted significantly poorer overall and cancer-specific survivals compared to an AGR ≥ 1.45 (P < 0.001 and P = 0.008, respectively). Multivariate analyses showed that an AGR < 1.45 was an independent risk factor for poorer overall and cancer-specific survivals (P = 0.002 and P = 0.015, respectively). Conclusions Preoperative AGR can act as an effective biomarker with easy accessibility for evaluating the prognosis of patients with UTUC. AGR should be applied in UTUC patients for risk stratification and determination of optimal therapeutic regimens.
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Affiliation(s)
- Bo Zhang
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Wei Yu
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Li-Qun Zhou
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Zhi-Song He
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Cheng Shen
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Qun He
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Jun Li
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Li-Bo Liu
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Cong Wang
- Peking University Health Science Center, Beijing, People’s Republic of China
| | - Xiao-Yu Chen
- Peking University Health Science Center, Beijing, People’s Republic of China
| | - Yu Fan
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Shuai Hu
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Lei Zhang
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
| | - Wen-Ke Han
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
- * E-mail: (WKH); (JJ)
| | - Jie Jin
- Department of Urology, Peking University First Hospital, Beijing, People’s Republic of China
- Institute of Urology, Peking University, Beijing, People’s Republic of China
- National Urological Cancer Center, Beijing, People’s Republic of China
- * E-mail: (WKH); (JJ)
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Li C, Sun JW, Zhang GF, Liu LB. Effect of the absence of the CcpA gene on growth, metabolic production, and stress tolerance in Lactobacillus delbrueckii ssp. bulgaricus. J Dairy Sci 2015; 99:104-11. [PMID: 26585479 DOI: 10.3168/jds.2015-10321] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 09/28/2015] [Indexed: 11/19/2022]
Abstract
The catabolite control protein A (CcpA) is a kind of multi-effect regulatory protein. In the study, the effect of the inactivation of CcpA and aerobic conditions on the growth, metabolic production, and stress tolerance to heat, oxidative, and cold stresses in Lactobacillus delbrueckii ssp. bulgaricus was investigated. Results showed that inactivation of CcpA distinctly hindered growth. Total lactic acid concentration was significantly lower in aerobiosis for both strains and was lower for the mutant strain than L. bulgaricus. Acetic acid production from the mutant strain was higher than L. bulgaricus in aerobiosis compared with anaerobiosis. Enzyme activities, lactate dehydrogenase (LDH), phosphate fructose kinase (PFK), pyruvate kinase (PK), and pyruvic dehydrogenase (PDH), were significantly lower in the mutant strain than L. bulgaricus. The diameters of inhibition zone were 13.59 ± 0.02 mm and 9.76 ± 0.02 mm for L. bulgaricus in anaerobiosis and aerobiosis, respectively; and 8.12 ± 0.02 mm and 7.38 ± 0.02 mm for the mutant in anaerobiosis and aerobiosis, respectively. For both strains, cells grown under aerobic environment possess more stress tolerance. This is the first study in which the CcpA-negative mutant of L. bulgaricus is constructed and the effect of aerobic growth on stress tolerance of L. bulgaricus is evaluated. Although aerobic cultivation does not significantly improve growth, it does improve stress tolerance.
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Affiliation(s)
- C Li
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China 150030
| | - J W Sun
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China 150030
| | - G F Zhang
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China 150030
| | - L B Liu
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, Harbin, China 150030.
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Li Y, Liu LB, Ma T, Wang P, Xue YX. Effect of caveolin-1 on the expression of tight junction-associated proteins in rat glioma-derived microvascular endothelial cells. Int J Clin Exp Pathol 2015; 8:13067-74. [PMID: 26722502 PMCID: PMC4680447] [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] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Accepted: 09/25/2015] [Indexed: 06/05/2023]
Abstract
Caveolin-1 affects the permeability of blood-tumor barrier (BTB) by regulating the expression of tight junction-associated proteins. However, the effect is still controversial. In the present work, we studied the regulative effect of caveolin-1 on the expression of tight junction-associated proteins and BTB via directly silencing and overexpressing of caveolin-1 by recombinant adenovirus transduction of glioma-derived microvascular endothelial cells in rat brain. The results show that the caveolin-1 downregulation resulted in decreased expression of tight junction-associated proteins, opening of tight junctions, and increasing the permeability of BTB, whereas the overexpression of caveolin-1 presented the opposite effects. Therefore, we conclude that caveolin-1 regulates the expression of tight junction-associated proteins in a positive manner, which further plays a role in the regulation of BTB permeability. This finding provides a novel therapeutic target for selectively opening of BTB.
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Affiliation(s)
- Yao Li
- Department of Neurobiology, College of Basic Medicine, China Medical University Shenyang 110122, PR China
| | - Li-Bo Liu
- Department of Neurobiology, College of Basic Medicine, China Medical University Shenyang 110122, PR China
| | - Teng Ma
- Department of Neurobiology, College of Basic Medicine, China Medical University Shenyang 110122, PR China
| | - Ping Wang
- Department of Neurobiology, College of Basic Medicine, China Medical University Shenyang 110122, PR China
| | - Yi-Xue Xue
- Department of Neurobiology, College of Basic Medicine, China Medical University Shenyang 110122, PR China
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27
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Hu Y, Lin X, Wang P, Xue YX, Li Z, Liu LB, Yu B, Feng TD, Liu YH. CRM197 in Combination With shRNA Interference of VCAM-1 Displays Enhanced Inhibitory Effects on Human Glioblastoma Cells. J Cell Physiol 2015; 230:1713-28. [PMID: 25201410 DOI: 10.1002/jcp.24798] [Citation(s) in RCA: 6] [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] [Received: 02/14/2014] [Accepted: 04/02/2014] [Indexed: 01/01/2023]
Abstract
CRM197 is a naturally nontoxic diphtheria toxin mutant that binds and inhibits heparin-binding epidermal growth factor-like growth factor. CRM197 serves as carrier protein for vaccine and other therapeutic agents. CRM197 also inhibits the growth, migration, invasion, and induces apoptosis in various tumors. Vascular cell adhesion molecule-1 (VCAM-1) is an important cell surface adhesion molecule associated with malignancy of gliomas. In this work, we aimed to investigate the role and mechanism of CRM197 combined with shRNA interference of VCAM-1 (shRNA-VCAM-1) on the migration, invasion, and apoptosis of glioblastoma cells. U87 and U251 human glioblastoma cells were treated with CRM197 (10 µg/ml) and shRNA interfering technology was employed to silence VCAM-1 expression. Cell viability, migration, invasiveness, and apoptosis were assessed with CCK8, Transwell and Annexin V-PE/7-AAD staining. Activation of cleaved caspase-3, 8, and 9, activity of matrix metalloproteinase-2/9 (MMP-2/9), and expression of phosphorylated Akt (p-Akt) were also checked. Results showed that CRM197 and shRNA-VCAM-1 not only significantly inhibited the cell proliferation, migration, invasion, but also promoted the apoptosis of U87 and U251 cells. Combined treatment of both displayed enhanced inhibitory effects on the malignant biological behavior of glioma cells. The activation of cleaved caspase-3, 8, 9 was promoted, activity of MMP-2 and MMP-9 and expression of p-Akt were inhibited significantly by the treatment of CRM197 and shRNA-VCAM-1 alone or in combination, indicating that the combination of CRM197 with shRNA-VCAM-1 additively inhibited the malignant behavior of human glioblastoma cells via activating caspase-3, 8, 9 as well as inhibiting MMP-2, MMP-9, and Akt pathway.
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Affiliation(s)
- Yi Hu
- Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, P. R. China
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Sun YN, Liu LB, Xue YX, Wang P. Effects of insulin combined with idebenone on blood-brain barrier permeability in diabetic rats. J Neurosci Res 2014; 93:666-77. [PMID: 25421718 DOI: 10.1002/jnr.23511] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [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: 06/12/2014] [Revised: 09/26/2014] [Accepted: 09/30/2014] [Indexed: 11/07/2022]
Abstract
This study investigates the effect of insulin combined with idebenone on blood-brain barrier (BBB) permeability in experimental streptozotocin-induced diabetic rats as well as the underlying mechanisms. With a diabetic rat model, we show that insulin and idebenone normalize body weight and water intake and restore BBB permeability and that their combination displays a synergistic effect. The results from transmission electron microscopy show that the combination of insulin and idebenone significantly closed the tight junction (TJ) in diabetic rats. The results from Western blotting in diabetic rats show that the upregulation of TJ-associated proteins occludin, and zonula occludens (ZO)-1 caused by the combination of insulin and idebenone is more remarkable than that with either agent alone. In addition, the activations of reactive oxygen species (ROS) and advanced glycation end products (AGEs) and the expression levels of receptors for advanced glycation end-products (RAGE) and nuclear factor-κB (NF-κB) were significantly decreased after treatment with insulin and idebenone in diabetic rats. These results suggest that the combination of insulin and idebenone could decrease the BBB permeability in diabetic rats by upregulating the expression of occludin, claudin-5, and ZO-1 and that the ROS/AGE/RAGE/NF-κB signal pathway might be involved in the process.
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Affiliation(s)
- Yan-Na Sun
- Department of Neurobiology, College of Basic Medicine, and Institute of Pathology and Pathophysiology, China Medical University, Shenyang, People's Republic of China
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Liu XH, Wang YP, Wang LX, Chen Z, Liu XY, Liu LB. Exendin-4 protects murine MIN6 pancreatic β-cells from interleukin-1β-induced apoptosis via the NF-κB pathway. J Endocrinol Invest 2013; 36:803-11. [PMID: 23609920 DOI: 10.3275/8938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Glucagon-like peptide-1 (GLP-1) and its potent analog, exendin-4, are well known to inhibit β- cell apoptosis and promote β-cell proliferation. Meanwhile, cytokines, such as interleukin-1β (IL-1β), stimulate inducible nitric oxide synthase (iNOS) expression and nitric oxide overproduction leading to β-cell damage. However, the protective mechanisms of GLP-1 in β-cells exposed to cytokines have not been fully elucidated. AIMS In this study, the protective effects of exendin-4 on IL-1β-induced apoptosis were investigated in murine MIN6 pancreatic β-cells. The role of nuclear factor-κB (NF-κB) signaling in this process was also explored. METHODS The effects of exendin-4 pre-treatment on IL-1β-induced apoptosis were investigated by Hoechst/PI and Annexin V/PI staining. Levels of iNOS and NF-κB proteins were investigated by Western blotting and cytoplasmic nitrite levels were determined using Griess reagent. RESULTS IL-1β treatment (range, 5-40 ng/ml) for 24 h was positively correlated with nitrite production (R2=0.9668, p<0.01), a significant increase in the percentage of apoptotic cells (p<0.01) and a concomitant dose-dependent increase in cytoplasmic levels of iNOS and NF-κB p65 activation. N-acetyl- L-cysteine (NAC), NG-nitro-L-arginine methyl ester (L-NAME) and pyrrolidine dithiocarbamate (PDTC), partially rescued apoptotic β-cells, suggesting involvement of NF-κB-iNOS-nitrite in this process. Exendin-4 (100 nM) treatment significantly decreased IL-1β-induced apoptosis (p<0.01), downregulated NF-κB activation and subsequently decreased iNOS and nitrite levels in IL-1β-induced β-cells (p<0.001), in a similar manner to L-NAME, PDTC and NAC. CONCLUSIONS These results suggest that exendin-4 protects against IL-1β- induced apoptosis in β-cells via downregulation of the NF- κB-iNOS-nitrite pathway.
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Affiliation(s)
- X H Liu
- Department of Endocrinology, Fujian Institute of Endocrinology, Union Hospital of Fujian Medical University, 29 Xinquan Road, Fuzhou, Fujian 350001, People's Republic of China
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Xie H, Xue YX, Liu LB, Liu YH, Wang P. Role of RhoA/ROCK signaling in endothelial-monocyte-activating polypeptide II opening of the blood-tumor barrier: role of RhoA/ROCK signaling in EMAP II opening of the BTB. J Mol Neurosci 2011; 46:666-76. [PMID: 21647708 DOI: 10.1007/s12031-011-9564-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [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: 04/27/2011] [Accepted: 05/23/2011] [Indexed: 11/25/2022]
Abstract
The purpose of the present study was to determine the potential for RhoA/ROCK signaling to play a role in endothelial-monocyte-activating polypeptide (EMAP) II-induced increase in blood-tumor barrier (BTB) permeability in rat brain microvascular endothelial cells (RBMECs). In the present study, we used an in vitro BTB model, a RhoA inhibitor (C3 exoenzyme) and a ROCK inhibitor (Y27632) to determine whether RhoA/ROCK pathway play a role in the process of TJ disassembly, stress fiber formation, MLC and cofilin phosphorylation, as well as increase of BTB permeability induced by EMAP II. The results revealed that BTB permeability was increased by EMAP II induction, and C3 exoenzyme or Y27632 could partially inhibit the EMAP II-induced increase of BTB permeability. The significant down-regulations in tight junction (TJ)-associated proteins occludin, claudin-5 and ZO-1 and stress fiber formation by EMAP II administration were observed, which were partly prevented by C3 exoenzyme or Y27632 pretreatment. Moreover, the significant increases in RhoA activity, myosin light chain (MLC) and cofilin phosphorylation by EMAP II administration were observed, MLC and cofilin phosphorylation were partly inhibited by C3 exoenzyme or Y27632 pretreatment. The present study demonstrates that the activation of RhoA/ROCK signaling in RBMECs was required for the increase of BTB permeability and these effects are related with the ability for RhoA/ROCK to mediate TJ disassembly and stress fiber formation by phosphorylating cofilin and MLC.
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Affiliation(s)
- Hui Xie
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, Liaoning Province, People's Republic of China, 110001
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Xie H, Xue YX, Liu LB, Liu YH. Endothelial-monocyte-activating polypeptide II increases blood-tumor barrier permeability by down-regulating the expression levels of tight junction associated proteins. Brain Res 2010; 1319:13-20. [PMID: 20083091 DOI: 10.1016/j.brainres.2010.01.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [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: 11/05/2009] [Revised: 01/06/2010] [Accepted: 01/11/2010] [Indexed: 11/17/2022]
Abstract
This study was performed to determine whether endothelial-monocyte-activating polypeptide (EMAP) II increases the permeability of the blood-tumor barrier (BTB) in the rat model of C6 glioma, and whether EMAP II opens the BTB by affecting tight junction (TJ) associated proteins zonula occluden-1 (ZO-1), occludin and claudin-5. The rats were divided into eight groups randomly: control group, EMAPII 0h group, EMAPII 0.5h group, EMAPII 1h group, EMAPII 2h group, EMAPII 3h group, EMAPII 6h group and EMAPII 12h group. The BTB permeability was assessed by Evans blue extravasation. The mRNA and protein expressions of ZO-1, occludin, and claudin-5 were determined by reverse transcriptase-polymerase chain reaction, western blot, and immunohistochemistry assays. The BTB permeability significantly increased after EMAP II injection in different doses (40ng/kg, 80ng/kg and 160ng/kg). The BTB permeability started to increase from 0.5h, reached a peak at 1h, and finally returned to the level of EMAP II 0h group after EMAP II injection at dose of 80ng/kg. The mRNA and protein expression levels of ZO-1, occludin and claudin-5 were significantly decreased after EMAP II injection. This study demonstrates for the first time that EMAP II increases the permeability of BTB selectively, and the possible mechanism is associated with the down-regulation of ZO-1, occludin and claudin-5.
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Affiliation(s)
- Hui Xie
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, Liaoning province, 110001, PR China
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Liu LB, Wu CM, Wen J, Chen JL, Zheng MQ, Zhao GP. Association of SNPs in exon 2 of the MHC B-F gene with immune traits in two distinct chicken populations: Chinese Beijing-You and White Leghorn. ACTA AGR SCAND A-AN 2009; 59:4-11. [PMID: 27453634 PMCID: PMC4936439 DOI: 10.1080/09064700902988905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2008] [Revised: 04/06/2009] [Accepted: 04/22/2009] [Indexed: 11/09/2022]
Abstract
Antibody titers raised for vaccinations against avian influenza (AI) and Newcastle disease (ND) were higher in Chinese Beijing-You (BJY) than in White Leghorn (WL) (P < 0.001), but there was no breed difference in titers for sheep red blood cells (SRBC). Genotyping by PCR-SSCP identified seven haplotypes in WL and 17 in BJY. After sequencing PCR products (35 and 85, respectively), 43 (WL) and 47 (BJY) single nucleotide polymorphisms (SNPs) were found in the 264 bp of exon 2. In WL chickens, significant associations were found with antibody responses to AI (two SNPs), ND (six SNPs), and SRBC (one SNP), while in BJY there was association with responses to ND (two SNPs) and SRBC (two SNPs), but none with AI. These results indicate that the genomic region bearing exon 2 of the major histocompatibility complex B-F gene has significant effects on antibody responses to SRBC and vaccination against AI and ND. Different SNPs affected antibody titers for each of the antigens and they differed between these very distinct breeds.
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Affiliation(s)
- L B Liu
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - C M Wu
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - J Wen
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - J L Chen
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - M Q Zheng
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
| | - G P Zhao
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100094, China
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Ren Z, Wan W, Wei Y, Liu L, Yu T. A theoretical model for mid- and low-latitude ionospheric electric fields in realistic geomagnetic fields. Sci Bull (Beijing) 2008. [DOI: 10.1007/s11434-008-0404-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Liu LB, Xue YX, Liu YH, Wang YB. Bradykinin increases blood-tumor barrier permeability by down-regulating the expression levels of ZO-1, occludin, and claudin-5 and rearranging actin cytoskeleton. J Neurosci Res 2008; 86:1153-68. [PMID: 18183615 DOI: 10.1002/jnr.21558] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Bradykinin (BK) has been shown to open blood-tumor barrier (BTB) selectively and to increase permeability of the BTB transiently, but the mechanism is unclear. This study was performed to determine whether BK opens the BTB by affecting the tight junction (TJ)-associated proteins zonula occluden-1 (ZO-1), occludin, and caludin-5 and cytoskeleton protein filamentous actin (F-actin). In rat brain glioma model and BTB model in vitro, we find that the protein expression levels of ZO-1, occludin, and claudin-5 are attenuated by BK induction. Immunohistochemistry and immunofluorescence assays show that the attenuated expression of ZO-1, occludin, and claudin-5 and F-actin is most obvious in the smaller tumor capillaries (<20 microm) after BK infusion, and there is no change in the larger tumor capillaries (>20 microm). The redistribution of ZO-1, occludin, and claudin-5 and rearrangement of F-actin in brain microvascular endothelial cells are observed at the same time. Meanwhile, Evans blue assay shows that the permeability of BTB increases after BK infusion. Transmission electron microscopy indicates that TJ is opened and that pinocytotic vesicular density is increased. Transendothelial electrical resistance (TEER) and horseradish peroxidase flux assays also reveal that TJ is opened by BK induction. In addition, radioimmunity and Western blot assay reveal a significant decrease in expression levels of cAMP and catalytic subunit of protien kinase A (PKAcs) of tumor tissue. This study demonstrates that the increase of BK-mediated BTB permeability is associated with the down-regulation of ZO-1, occludin, and claudin-5 and the rearrangement of F-actin and that cAMP/PKA signal transduction system might be involved in the modulating process.
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Affiliation(s)
- Li-Bo Liu
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, People's Republic of China
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Yue X, Wan W, Liu L, Le H, Chen Y, Yu T. Development of a middle and low latitude theoretical ionospheric model and an observation system data assimilation experiment. Chin Sci Bull 2008. [DOI: 10.1007/s11434-007-0462-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Liu X, Liu LB, Liu YH, Xue YX. [Effects of aluminum on the integrity of blood brain barrier in juvenile rats]. Zhonghua Yu Fang Yi Xue Za Zhi 2008; 42:12-15. [PMID: 18512320] [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: 05/26/2023]
Abstract
OBJECTIVE To investigate the effects of aluminum on the integrity of blood brain barrier in juvenile rats. METHODS The 40-day old Sprague-Dawley (SD) rats were exposed to aluminium chloride by intraperitoneal injection, at a dose of Al3+ 0 mg/kg, 2.5 mg/kg, 5 mg/kg, 10 mg/kg, respectively. Morris water amaze system was used to test the learning and memory ability. The Evans blue content in brain was analyzed after injection. The ultrastructure's change of the blood brain barrier (BBB) was observed with transmission electron microscope. The expression of occluding protein in BBB was determined by Western blot method. RESULTS As compared with control group, the permeability of BBB in mid-level Al and high-level Al was enhanced (P <0.01), the expression of occluding protein was descended (P <0.01). The ultrastructures of the BBB were changed. No differences between every group on learning and memory ability (P>0.05). CONCLUSIONS Short time and low dose of Al might not change the ability of learning and memory in juvenile rats, however the permeability and ultrastructures of the BBB might be significantly changed.
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Affiliation(s)
- Xin Liu
- Department of Neurobiology, Basic Medical College, China Medical University, Shenyang 110001, China
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Liu LB, Hu Y, Ju GZ, Zhang X, Xie L, Liu SZ, Shi JP, Yu YQ, Xu Q, Fan Y, Shen Y, Wei J. Is KPNB3 locus associated with schizophrenia? Biomed Environ Sci 2007; 20:52-5. [PMID: 17458142] [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: 05/15/2023]
Abstract
OBJECTIVE To reconfirm the association of KPNB3 with schizophrenia in Chinese population. METHODS Two single nucleotide polymorphisms (SNPs), rs2588014 and rs626716 at the KPNB3 locus, were genotyped in 304 Chinese Han family trios consisting of fathers, mothers, and affected offsprings with schizophrenia. These 2 SNPs were detected by PCR-based restriction fragment length polymorphism (RFLP) analysis. The Hardy-Weinberg equilibrium for genotypic distributions was estimated by the goodness-of-fit test. The UNPHASED program was used to perform transmission disequilibrium test (TDT), haplotype analysis, and pair-wise measure of linkage disequilibrium (LD) between these 2 SNPs. RESULTS The genotypic distributions of both rs2588014 and rs626716 were in the Hardy-Weinberg equilibrium (P > 0.05). The TDT revealed allelic association with rs626716 (chi2 = 9.31, P = 0.0023) but not with rs2588014 (chi2 = 3.44, P = 0.064). The global P-value was 0.0099 for 100 permutations. The haplotype analysis also showed a disease association (chi2 = 25.97, df = 3, P = 0.0000097). CONCLUSION The present study provides further evidence in support of the KPNB3 association with schizophrenia in Chinese population.
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Affiliation(s)
- Li-Bo Liu
- Research Center for Genomic Medicine, School of Public Health, Jilin University, Changchun, China
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Li JQ, Chen HY, Zhang HR, Yu HC, Shi YG, Liu LB, Tian HF, Zhu Y, Tranquada JM. Structural properties and charge ordered states in RMnO3 (R=La, Pr, Nd, Ca, Sr) and (La, Sr)2NiO4. Micron 2004; 35:419-24. [PMID: 15120125 DOI: 10.1016/j.micron.2004.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2003] [Accepted: 01/19/2004] [Indexed: 11/28/2022]
Abstract
Structural distortions arising from the condensations of two essential kinds of phonon modes: the triply degenerate rotational modes (phix, phiy, phiz) of MnO(6) and the doubly degenerate Jahn-Teller active modes (Q1, Q2) have been systematically investigated in the perovskite manganites. Microstructural features associated with certain types of distortions have been observed by transmission electron microscopy (TEM). In RMnO(3) and La(Sr)(2)NiO(4), we characterize the local structure, charge ordered states and orbital ordering by means of low-temperature TEM. We present direct evidence that the stripe modulation in La(Sr)(2)NiO(4) is indeed one-dimensional within each NiO(2) plane. Several typical kinds of defect structures, including antiphase boundaries and the 90 degrees -twin domains, appear commonly in the charge-ordered states.
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Affiliation(s)
- J Q Li
- Beijing Laboratory of Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China.
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Liu BF, Liu LB, Chen H, Cheng JK. Separation of vanadium, niobium and tantalum as ternary mixed-ligand complexes by capillary electrophoresis using chelation with 4-(2-pyridylazo)resorcinol and tartaric acid. Fresenius J Anal Chem 2001; 369:195-7. [PMID: 11225366 DOI: 10.1007/s002160000604] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Vanadium(V), niobium(V) and tantalum(V) were separated as ternary mixed-ligand complexes by capillary electrophoresis using 4-(2-pyridylazo)resorcinol (PAR) as the color chelating reagent. Four carboxylic acids such as tartaric acid (Tart), oxalic acid, citric acid and acetic acid were investigated as the additional ligand. The first was chosen as the best. Other parameters such as the concentration ratio of Tart to PAR, buffer concentration, injection time and applied voltage were also optimized. Under the optimized conditions, a complete separation of the three metal complexes was accomplished within 10 min. A linear calibration curve in the range of two orders of magnitude was obtained.
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Affiliation(s)
- B F Liu
- Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
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Abstract
Erythrocyte glucose-6-phosphate dehydrogenase (G6PD) was characterized in blood samples obtained from 97 randomly selected males with enzyme deficiency from various regions of Guangdong Province, China. Nine new variants (Gd Kaiping, Gd Boluo, Gd Huiyang, Gd Gaomin, Gd Qing-Baijiang, Gd Gaozhou, Gd Huazhou, Gd Nanhai, and Gd Guangzhou) were identified. Of the 31 variants found in this province, Gd Kaiping, Gd Taiwan-Hakka, Gd Haad Yai, Gd Haad Yai-like and Gd Huiyang occurred most frequently. The frequency of each variant was calculated. The results demonstrated that the genetic heterogeneity of G6PD deficiency was high in this area.
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Affiliation(s)
- C S Du
- Department of Medical Genetics, Sun Yat Sen University of Medical Sciences, Guangzhou, The People's Republic of China
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Du CS, Liu LB, Liu B, Tokunaga K, Omoto K. Glucose-6-phosphate dehydrogenase deficiency among three national minorities in Hainan Island, China. Gene Geogr 1988; 2:71-4. [PMID: 3154134] [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: 01/04/2023]
Abstract
A total of 296 healthy males belonging to three national minority groups, Li, Miao and Hui, in Hainan Island, China, were screened for G6PD deficiency. 9 out of 139 Li (6.47%), 8 out of 48 Miao (16.67%), and 2 out of 109 Hui (1.83%) individuals were found to be G6PD deficient. Of these 19 variant samples, three were subjected to G6PD characterization and found to be different from each other. They were considered to be G6PD Miaozu-Baisha, G6PD Qingyuan, and a new variant tentatively named G6PD Huizu-Sanya.
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Affiliation(s)
- C S Du
- Department of Medical Genetics, Sun Yat-sen University of Medical Sciences, Guangzhou, China
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Chen DG, Liu LB, Tang SZ, Xiang RY. Holt-Oram syndrome. Chin Med J (Engl) 1986; 99:755-6. [PMID: 3100237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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Jiang SL, Liu ZM, Sun ZR, Cao Y, Liu LB. [A method for registration of stomach movement of rabbits in chronic experiments]. Sheng Li Xue Bao 1986; 38:102-6. [PMID: 3738532] [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: 01/07/2023]
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Liu LB, Taylor CB, Peng SK, Mikkelson B. Experimental arteriosclerosis in Rhesus monkeys induced by multiple risk factors: cholesterol, vitamin D, and nictotine. Paroi Arterielle 1979; 5:25-37. [PMID: 114963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Forty-four rhesus monkeys were given various regimens involving three vasotoxic factors: dietary hypercholesteremia, hypervitaminosis D2 and nicotinism for period ranging from 14 to 62 weeks. When administered singly, no or only early disease was observed. The combined three "risk factor" group demonstrated the most impressive arteriosclerosis. Major arteriosclerotic changes: fat, calcium and mensenchyme of thirty standardized segments of aorta, coronary and limb arteries of all monkeys were graded according to a standardized system. Statistical analysis revealed that the total arteriosclerotic scores of the three vasotoxic factor group was significantly greater than those of any other group and that this was the only group with significant coronary arteriosclerosis as well as complicated lesions such as thrombosis or occlusion of arterial luminae of the extremities. A lowering of the vitamin D2 dosage, resulting in a lengthening of the survival time of animals which should allow sufficient time for complicated disease to develop, is recommended for future studies.
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Shin MS, Ho KJ, Liu LB. Pericardial mesothelioma masquerading as rheumatic heart disease. Arch Intern Med 1977; 137:257. [PMID: 836120] [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: 12/24/2022]
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46
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Ho KJ, Pang LC, Liu LB, Soong SJ, Taylor CB. Cholesterol accumulation in various rabbits' tissues with variations in serum levels and duration of exposure. Exp Mol Pathol 1974; 21:194-203. [PMID: 4412426 DOI: 10.1016/0014-4800(74)90089-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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47
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Ho KJ, Lawrence WD, Lewis LA, Liu LB, Taylor CB. Hereditary hyperlipidemia in nonlaying chickens. Arch Pathol 1974; 98:161-72. [PMID: 4852258] [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: 01/12/2023]
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48
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Ho KJ, Lin CY, Galysh FT, Patel AS, Liu LB, Taylor CB. Aortic compliance. Studies on its relationship to aortic constituents in man. Arch Pathol 1972; 94:537-46. [PMID: 4263883] [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: 01/09/2023]
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49
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Liu LB. [Late Professor Cheng Ching-Mou's contribution to microbiology]. Zhonghua Min Guo Wei Sheng Wu Xue Za Zhi 1972; 5:107-9. [PMID: 4598543] [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: 01/11/2023]
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50
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Taylor CB, Hass GM, Ho KJ, Liu LB. Risk factors in the pathogenesis of atherosclerotic heart disease and generalized atherosclerosis. Ann Clin Lab Sci (1971) 1972; 2:239-43. [PMID: 4628363] [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: 01/11/2023]
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