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Shang G, Du S, Yang Y, Wu Y, Cao Y, Bian J. Is negative density‐dependent reproduction regulated by density‐induced stress in root voles? Two field experiments. Ecol Evol 2022; 12:e8927. [PMID: 35592070 PMCID: PMC9101587 DOI: 10.1002/ece3.8927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 04/20/2022] [Accepted: 04/26/2022] [Indexed: 11/12/2022] Open
Abstract
Density dependence in reproduction plays an important role in stabilizing population dynamics via immediate negative feedback from population density to reproductive output. Although previous studies have shown that negative density‐dependent reproduction is associated with strong spacing behavior and social interaction between individuals, the proximal mechanism for generating negative density‐dependent reproduction remains unclear. In this study, we investigated the effects of density‐induced stress on reproduction in root voles. Enclosed founder populations were established by introducing 6 (low density) and 30 (high density) adults per sex into per enclosure (four enclosures per density in total) during the breeding season from April to July 2012 and from May to August 2015. Fecal corticosterone metabolite (FCM) levels, reproductive traits (recruitment rate and the proportion of reproductively active individuals), and founder population numbers were measured following repeated live trapping in both years. The number of founders was negatively associated with recruitment rates and the proportion of reproductively active individuals, displaying a negative density‐dependent reproduction. FCM level was positively associated with the number of founders. The number of founder females directly affected the proportion of reproductive females, and directly and indirectly through their FCM levels affected the recruitment rate; the effect of the number of male founders on the proportion of reproductive males was mediated by their FCM level. Our results showed that density‐induced stress negatively affected reproductive traits and that density‐induced stress is one ecological factor generating negative density‐dependent reproduction.
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Affiliation(s)
- Guozhen Shang
- Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau Biology Chinese Academy of Sciences Xining China
- Qinghai Key Laboratory of Animal Ecological Genomics Xining China
| | - Shouyang Du
- College of Animal Science and Veterinary Medicine Henan Institute of Science and Technology Xinxiang China
| | - Yanbin Yang
- College of Veterinary Medicine Henan Agricultural University Zhengzhou China
| | - Yan Wu
- School of Life and Environment Sciences Hangzhou Normal University Hangzhou China
| | - Yifan Cao
- Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau Biology Chinese Academy of Sciences Xining China
- Qinghai Key Laboratory of Animal Ecological Genomics Xining China
| | - Jianghui Bian
- Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau Biology Chinese Academy of Sciences Xining China
- Qinghai Key Laboratory of Animal Ecological Genomics Xining China
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2
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Batlevi CL, Salles G, Tilly H, Chaidos A, McKay P, Phillips T, Assouline S, Campbell P, Ribrag V, Damaj GL, Dickinson M, Jurczak W, Kaźmierczak M, Opat S, Radford JR, Schmitt A, Rajarethinam A, Shang G, Morschhauser F. CHARACTERISTICS OF PATIENTS ACHIEVING COMPLETE OR PARTIAL RESPONSE (CR/PR) WITH TAZEMETOSTAT (TAZ) IN WILD‐TYPE RELAPSED/REFRACTORY (R/R) FOLLICULAR LYMPHOMA (FL). Hematol Oncol 2021. [DOI: 10.1002/hon.21_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- C. L. Batlevi
- Memorial Sloan Kettering Cancer Center Lymphoma Service Department of Medicine New York USA
| | - G. Salles
- Lyon‐Sud Hospital University of Lyon Hematology Pierre‐Bénite France
| | - H. Tilly
- Centre Henri Becquerel and Rouen University Department of Haematology and INSERM U1245 Rouen France
| | - A. Chaidos
- Imperial College Healthcare NHS Trust Hammersmith Hospital Department of Medicine London UK
| | - P. McKay
- Beatson West of Scotland Cancer Centre Department of Hematology Glasgow UK
| | - T. Phillips
- University of Michigan Hematology and Oncology Ann Arbor USA
| | - S. Assouline
- Division of Hematology Sir Mortimer B. Davis‐Jewish General Hospital Oncology Montreal Canada
| | - P. Campbell
- Barwon Health University Hospital Geelong Department of Clinical Haematology Geelong Australia
| | - V. Ribrag
- Gustave Roussy Hematology Villejuif France
| | - G. Laurent Damaj
- Hematology Institute University Hospital School of Medicine Hematology Caen France
| | - M. Dickinson
- Peter MacCallum Cancer Centre Royal Melbourne Hospital Department of Clinical Haematology Melbourne Australia
| | - W. Jurczak
- Maria Sklodowska‐Curie National Research Institute of Oncology Department of Hematology Kraków Poland
| | - M. Kaźmierczak
- Poznań University of Medical Sciences Department of Hematology and Bone Marrow Transplantation Poznań Poland
| | - S. Opat
- Monash University Department of Haematology Victoria Australia
| | - J. R. Radford
- University of Manchester NIHR Manchester Clinical Research Facility Manchester Academic Health Science Centre The Christie NHS Foundation Trust Department of Medical Oncology Manchester UK
| | - A. Schmitt
- Institut Bergonié Department of Hematology Bordeaux France
| | | | - G. Shang
- Epizyme, Inc. Medical Affairs Cambridge USA
| | - F. Morschhauser
- Groupe de Recherche sur les formes Injectables et les Technologies Associées CHU de Lille Université de Lille Oncology Lille France
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Shang G, Yang Y, Zhu Y, Wu X, Cao Y, Wu Y, Bian J. A complex regulating pattern induced by the effects of predation and parasites on root vole ( Microtus oeconomus) populations during the breeding season. J Mammal 2020. [DOI: 10.1093/jmammal/gyaa084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Predators and parasites have synergistic effects on the phenotype of the species they share as prey and host. Experimental studies that incorporate the interactions between predation and parasitism are, however, scarce in small-mammal populations. Our previous work has shown that the combined effects of predation and coccidian infection reduce overwinter survival and population density in root voles (Microtus oeconomus). Here, we examined the separate and combined effects of these two drivers on the population growth of root voles during the breeding season. We carried out a two-level factorial experiment, in which we manipulated predator exclusion and the removal of parasites in enclosures and measured survival, fecal corticosterone metabolite (FCM) concentration, recruitment, and population density. An expected synergistic effect of predators and parasites on vole population was not found, due to no effect of parasites on FCM level and recruitment rate during the period of the experiment. Instead, we found phase-related effects of predation on demography. Predation reduced the survival rate of voles in spring, which was intensified by parasite infection. Predation risk reduced recruitment rate in early summer by elevating FCM levels. Consequently, both direct and indirect effects of predation lowered population density during the experimental period. In addition, for populations free of predators, the peak density that occurred in early autumn elevated FCM level of adult voles, which reduced recruitment rates and halted population growth. Moreover, predation, parasites, and density affected the quality of the offspring. Our study suggests that multiple regulation processes influence population fluctuations during the breeding season. We conclude that a population experiencing stress acts as a common interface through which interactions between intrinsic and extrinsic factors can be important determinants of fluctuations. We propose a new hypothesis of integrative stress effects to explain small-mammal population fluctuations.
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Affiliation(s)
- Guozhen Shang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, Qinghai, China
- Graduate University of Chinese Academy of Sciences, Beijing, China
| | - Yuangang Yang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, Qinghai, China
- Graduate University of Chinese Academy of Sciences, Beijing, China
| | - Yahui Zhu
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, Qinghai, China
- Graduate University of Chinese Academy of Sciences, Beijing, China
| | - Xueqing Wu
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, Qinghai, China
- Graduate University of Chinese Academy of Sciences, Beijing, China
| | - Yifan Cao
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, Qinghai, China
- Key Laboratory of Restoration Ecology of Cold Area, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, Qinghai, China
| | - Yan Wu
- School of Life and Environment Sciences, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Jianghui Bian
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, Qinghai, China
- Qinghai Key Laboratory of Animal Ecological Genomics, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, Qinghai, China
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Cao Y, Yang Y, Duszynski DW, Zhu Y, Shang G, Hou C, Zhang T, Bian J. PREVALENCE AND PARASITE COMPOSITION OF GASTROINTESTINAL PARASITES IN THE ENDANGERED TIBETAN ANTELOPE ( PANTHOLOPS HODGSONII) FROM THE CALVING GROUND OF HOH XIL NATURE WORLD HERITAGE SITE, QINGHAI, CHINA. J Wildl Dis 2020; 56:372-377. [PMID: 31750770] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Our objective was to provide baseline information on the gastrointestinal parasites of the female Tibetan antelope (Pantholops hodgsonii) on its calving ground at the Zhuonai Lake region, in the Hoh Xil Nature World Heritage site, Qinghai, China. On 3 July 2018, 238 freshly deposited fecal samples were collected from the calving grounds and analyzed by flotation technique to recover eggs, oocysts, and nematode larvae. All fecal samples demonstrated the presence of gastrointestinal parasites: 93% (221/238) had nematodes, 36% (86/238) had cestodes, and 99% (235/238) had coccidian oocysts. For each Tibetan antelope, mean (SD) parasite species richness was 3.4 (1.3). Coinfections with five parasite genera were found in 19% (45/238) of fecal samples. These results showed that prevalence of Trichostrongylus, Marshallagia, and Eimeria infections in these Tibetan antelopes were sufficiently high to suggest long-term monitoring be implemented because the climate there is becoming warmer and moisture is increasing, both presumably due to the influence of global warming which, in turn, may be contributing to increased infection risks with these parasites.
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Affiliation(s)
- Yifan Cao
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining 810008, People's Republic of China
- Qinghai Key Laboratory of Animal Ecological Genomics, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, People's Republic of China
| | - Yuangang Yang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining 810008, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Donald W Duszynski
- Biology Professor Emeritus, 76 Homesteads Rd., Placitas, New Mexico 87043, USA
| | - Yahui Zhu
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining 810008, People's Republic of China
- Qinghai Key Laboratory of Animal Ecological Genomics, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, People's Republic of China
| | - Guozhen Shang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining 810008, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Chu Hou
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining 810008, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Tongzuo Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining 810008, People's Republic of China
- Qinghai Key Laboratory of Animal Ecological Genomics, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, People's Republic of China
| | - Jianghui Bian
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Chinese Academy of Sciences, Xining 810008, People's Republic of China
- Qinghai Key Laboratory of Animal Ecological Genomics, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, People's Republic of China
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5
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Chi Y, Yao Y, Fang Z, Wang S, Huang G, Cai Q, Shang G, Wang G, Qu G, Wu Q, Jiang Y, Song J, Chen J, Zhu X, Cai Z, Bai C, Lu Y, Yu Z, Shen J, Cai J. Efficacy and safety of anlotinib in advanced leiomyosarcoma: Subgroup analysis of a phase IIB trial (ALTER0203). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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6
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Fang Z, Yao Y, Cai J, Chi Y, Wang S, Huang G, Cai Q, Shang G, Wang G, Qu G, Wu Q, Jiang Y, Song J, Chen J, Cai Z, Zhu X, Bai C, Lu Y, Yu Z, Shen J. The effect of treatment line on the efficacy of anlotinib hydrochloride in advanced alveolar soft part sarcoma patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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7
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Fang Z, Chi Y, Yao Y, Wang S, Huang G, Cai Q, Shang G, Wang G, Qu G, Wu Q, Jiang Y, Song J, Chen J, Zhu X, Cai Z, Bai C, Lu Y, Yu Z, Shen J, Cai J. Evaluation of hypertension and hand-foot syndrome as markers of anlotinib efficacy in advanced soft tissue sarcoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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8
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Yao Y, Chi Y, Fang Z, Wang S, Huang G, Cai Q, Shang G, Wang G, Qu G, Wu Q, Jiang Y, Song J, Chen J, Zhu X, Cai Z, Bai C, Lu Y, Yu Z, Shen J, Cai J. Efficacy of anlotinib in advanced soft tissue sarcoma by prior lines of therapy, age and dose modification. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Bi Z, Cai W, Wang Y, Shang G. Direct manipulation of metallic nanosheets by shear force microscopy. J Microsc 2018; 271:222-229. [PMID: 29762874 DOI: 10.1111/jmi.12710] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 03/28/2018] [Accepted: 04/26/2018] [Indexed: 11/28/2022]
Abstract
Micro/nanomanipulation is a rapidly growing technology and holds promising applications in various fields, including photonic/electronic devices, chemical/biosensors etc. In this work, we present that shear force microscopy (ShFM) can be exploited to manipulate metallic nanosheets besides imaging. The manipulation is realized via controlling the shear force sensor probe position and shear force magnitude based on our homemade ShFM system under an optical microscopy for in situ observation. The main feature of the ShFM system is usage of a piezoelectric bimorph sensor, which has the ability of self-excitation and detection. Moreover, the shear force magnitude as a function of the spring constant of the sensor and setpoint is obtained, which indicates that operation modes can be switched between imaging and manipulation through designing the spring constant before experiment and changing the setpoint during manipulation process, respectively. We believe that this alternative manipulation technique could be used to assemble other nanostructures with different shapes, sizes and compositions for new properties and wider applications.
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Affiliation(s)
- Z Bi
- Department of Applied Physics, Key Laboratory of Micro-Nano Measurement-Manipulation and Physics (Ministry of Education), Beihang University, Beijing, People's Republic of China
| | - W Cai
- Department of Applied Physics, Key Laboratory of Micro-Nano Measurement-Manipulation and Physics (Ministry of Education), Beihang University, Beijing, People's Republic of China
| | - Y Wang
- Department of Applied Physics, Key Laboratory of Micro-Nano Measurement-Manipulation and Physics (Ministry of Education), Beihang University, Beijing, People's Republic of China
| | - G Shang
- Department of Applied Physics, Key Laboratory of Micro-Nano Measurement-Manipulation and Physics (Ministry of Education), Beihang University, Beijing, People's Republic of China
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10
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Yin B, Li G, Wan X, Shang G, Wei W, Zhang Z. Large manipulative experiments reveal complex effects of food supplementation on population dynamics of Brandt's voles. Sci China Life Sci 2017; 60:911-920. [PMID: 28755298 DOI: 10.1007/s11427-017-9114-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 05/01/2017] [Indexed: 11/25/2022]
Abstract
Although food supplementation is well known to increase population density, there is still debate on the causative effects of food supplementation on reproduction, survival, and immigration. Large manipulative experiments, which exclude any confounding effects of dispersal and predation, are essential for clarifying the debate. In this study, we investigated the effects of food supplementation on Brandt's vole population dynamics and plant community in eight large enclosures (0.48 ha each) from 2010 to 2014. Food supplementation showed significant positive effects on population density due to increases in recruitment; however, it showed a complex effect on survival of voles: positive in non-breeding seasons, but negative in breeding seasons. In addition, food supplementation increased the quality of plants (as reflected by increased crude protein content), but decreased the quantity of less preferred plants in experimental enclosures. Thus, food seems to have direct positive effects on small rodents through improvement of food supply and indirect negative effects through food-induced density-dependent effects, and may have long-term effects on rodents through altering plant community composition and abundance.
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Affiliation(s)
- Baofa Yin
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
| | - Guoliang Li
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xinrong Wan
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Guozhen Shang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China
| | - Wanhong Wei
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China.
| | - Zhibin Zhang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
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Li X, Chen Y, Wang L, Shang G, Zhang C, Zhao Z, Zhang H, Liu A. Quercetin alleviates pulmonary angiogenesis in a rat model of hepatopulmonary syndrome. ACTA ACUST UNITED AC 2017; 49:S0100-879X2016000700606. [PMID: 27383124 PMCID: PMC4942229 DOI: 10.1590/1414-431x20165326] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 02/24/2016] [Accepted: 04/29/2016] [Indexed: 01/15/2023]
Abstract
Quercetin shows protective effects against hepatopulmonary syndrome (HPS), as demonstrated in a rat model. However, whether these effects involve pulmonary vascular angiogenesis in HPS remains unclear. Therefore, this study aimed to assess the effect of quercetin on pulmonary vascular angiogenesis and explore the underlying mechanisms. Male Sprague-Dawley rats weighing 200-250 g underwent sham operation or common bile duct ligation (CBDL). Two weeks after surgery, HIF-1α and NFκB levels were assessed in rat lung tissue by immunohistochemistry and western blot. Then, CBDL and sham-operated rats were further divided into 2 subgroups each to receive intraperitoneal administration of quercetin (50 mg/kg daily) or 0.2% Tween for two weeks: Sham (Sham+Tween; n=8), CBDL (CBDL+Tween; n=8), Q (Sham+quercetin; n=8), and CBDL+Q (CBDL+quercetin; n=8). After treatment, lung tissue specimens were assessed for protein (immunohistochemistry and western blot) and/or gene expression (quantitative real-time PCR) levels of relevant disease markers, including VEGFA, VEGFR2, Akt/p-Akt, HIF-1α, vWf, and IκB/p-IκB. Finally, arterial blood was analyzed for alveolar arterial oxygen pressure gradient (AaPO2). Two weeks after CBDL, HIF-1α expression in the lung decreased, but was gradually restored at four weeks. Treatment with quercetin did not significantly alter HIF-1α levels, but did reduce AaPO2 as well as lung tissue NF-κB activity, VEGFA gene and protein levels, Akt activity, and angiogenesis. Although hypoxia is an important feature in HPS, our findings suggest that HIF-1α was not the main cause for the VEGFA increase. Interestingly, quercetin inhibited pulmonary vascular angiogenesis in rats with HPS, with involvement of Akt/NF-κB and VEGFA/VEGFR-2 pathways.
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Affiliation(s)
- X Li
- Department of Physiology, Changzhi Medical College, Changzhi, China
| | - Y Chen
- Department of Microbiology, Changzhi Medical College, Changzhi, China
| | - L Wang
- Functional Laboratory of Changzhi Medical College, Changzhi, China
| | - G Shang
- Department of Physiology, Changzhi Medical College, Changzhi, China
| | - C Zhang
- Department of Physiology, Changzhi Medical College, Changzhi, China
| | - Z Zhao
- Liver Disease Institute of Changzhi Medical College, Changzhi, China
| | - H Zhang
- Department of Physiology, Changzhi Medical College, Changzhi, China
| | - A Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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12
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Affiliation(s)
- Baofa Yin
- College of Bioscience and Biotechnology; Yangzhou University; 12 Wenhui East Road Yangzhou Jiangsu 225009 China
| | - Shengmei Yang
- College of Bioscience and Biotechnology; Yangzhou University; 12 Wenhui East Road Yangzhou Jiangsu 225009 China
| | - Guozhen Shang
- College of Bioscience and Biotechnology; Yangzhou University; 12 Wenhui East Road Yangzhou Jiangsu 225009 China
| | - Wanhong Wei
- College of Bioscience and Biotechnology; Yangzhou University; 12 Wenhui East Road Yangzhou Jiangsu 225009 China
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13
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Tao J, Liu W, Shang G, Zheng Y, Huang J, Lin R, Chen L. MiR-207/352 regulate lysosomal-associated membrane proteins and enzymes following ischemic stroke. Neuroscience 2015; 305:1-14. [PMID: 26232047 DOI: 10.1016/j.neuroscience.2015.07.064] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [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: 01/03/2015] [Revised: 07/21/2015] [Accepted: 07/24/2015] [Indexed: 11/16/2022]
Abstract
The role of microRNAs (miRNAs) in lysosome-mediated neuronal death and survival following ischemic stroke remains unknown. Herein, using miRNA and mRNA gene expression profiling microarrays, we identified the differentially expressed 24 miRNAs and 494 genes in the cortical peri-infarct area, respectively. Integrating the miRNA targets and mRNA expression profiles, we found 47 genes of miRNA targets, including lysosomal-associated membrane protein 2 (LAMP2), Hexb, Bcl2, etc. MiR-207 and miR-352 were mainly downregulated after ischemic stroke, followed by a slight return to baseline during post-middle cerebral artery occlusion (MCAO) 1d to 7d. Furthermore, the luciferase reporter assay demonstrated that LAMP2 and Hexb were the direct targets of miR-207 and miR-352, respectively. After lateral ventricle injection with miR-207 agonist mimics, the neurological deficit scores and infarct volumes were attenuated, and the structure of mitochondria ridges was improved. In addition, miR-207 mimics could reduce the number of cellular lysosome and autophagosome, whereas increase the number of autophagic vacuoles, indicating miR-207 might affect the latter part of lysosomal-autophagy pathway and mitochondria-induced apoptosis. These results suggested that miR-207 and miR-352 were involved in lysosomal pathway for mediating ischemic injury and spontaneous recovery. MiR-207 mimics as potential target drugs could protect against autophagic cell death after ischemic stroke.
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Affiliation(s)
- J Tao
- College of Rehabilitation Medicine & TCM Rehabilitation Research Center Of SATCM, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, PR China
| | - W Liu
- College of Rehabilitation Medicine & TCM Rehabilitation Research Center Of SATCM, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, PR China
| | - G Shang
- Fujian Rehabilitation Tech Co-innovation Center (2011 Project), Fujian University of Traditional Chinese Medicine, Fuzhou 350122, PR China
| | - Y Zheng
- Fujian Rehabilitation Tech Co-innovation Center (2011 Project), Fujian University of Traditional Chinese Medicine, Fuzhou 350122, PR China
| | - J Huang
- Fujian Rehabilitation Engineering Research Center & Fujian Key Lab of Motor Function Rehabilitation, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, PR China
| | - R Lin
- Fujian Rehabilitation Tech Co-innovation Center (2011 Project), Fujian University of Traditional Chinese Medicine, Fuzhou 350122, PR China
| | - L Chen
- College of Rehabilitation Medicine & TCM Rehabilitation Research Center Of SATCM, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, PR China.
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14
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Xue J, Zhao H, Shang G, Zou R, Dai Z, Zhou D, Huang Q, Xu Y. RIP140 is associated with subclinical inflammation in type 2 diabetic patients. Exp Clin Endocrinol Diabetes 2012; 121:37-42. [PMID: 22956256 DOI: 10.1055/s-0032-1323683] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
AIMS To evaluate the expression level of RIP140 (receptor interaction protein 140) and its correlation with inflammatory cytokine production and free fatty acids (FFAs) in type 2 diabetes. METHODS Plasma and peripheral blood mononuclear cells (PBMCs) were collected from 24 diabetic and 30 healthy individuals. The levels of FFAs, TC, TG, HDL-C, LDL-C, FIN, and FBG were measured. The insulin resistance index was calculated using the homeostasis model assessment (HOMA). Additionally, PBMCs from control group were cultured alone or with 500 μmol/L palmitic acid (PA). Levels of RIP140 TNF-α, and IL-6 in PBMCs were analyzed using real-time RT-PCR, Western blots and ELISA. The relationship between RIP140 and other variables was performed using SPSS 11.5 software. RESULTS TG, LDL-C, FIN, FBG, HOMA, and HDL-C were significantly different between diabetic patients and the control group. Levels of RIP140, TNF-α, and IL-6 were higher in the diabetic group compared to control. RIP140 expression was positively correlated with FFAs, HDL-c, TNF-α, IL-6, FIN, FBG, and HOMA. Finally, 500 μmol/L PA treatment increased RIP140 expression and the secretion of inflammatory cytokines in cultured control PBMCs. CONCLUSIONS Increased RIP140 level may be closely associated with inflammation and disorder of lipid and glucose metabolism in diabetic patients.
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Affiliation(s)
- J Xue
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, China
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15
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Abstract
BACKGROUND AND OBJECTIVES There is little data on the duration of viraemia following infection with Ross River virus (RRV), the most common cause of arbovirus disease in Australia. In particular, no accurate estimate exists for the duration of pre-symptomatic RRV infection, which is important in assessing the potential for transfusion transmission. MATERIALS AND METHODS We used an established mouse model of RRV infection involving adult Swiss outbred mice to measure viraemia following infection. Applying our experimental data to a published probabilistic model for estimating the risk of dengue transmission by transfused blood, we derived comparable risk estimates for RRV. RESULTS Ross River virus RNA was measured using highly sensitive real-time PCR in serum samples to determine the duration of asymptomatic viraemia, which typically lasted 5 days, but extended to 9 days in some mice. Assuming the potential for transfusion transmission is proven, the risk of RRV transmission by blood during a 2004 outbreak in Cairns, Australia was retrospectively estimated as 1 in 13,542 (range from 1 in 4765 to 47,563). CONCLUSION This study provides updated epidemiological data useful to underpin modelling to assess the potential risk of transfusion-transmitted RRV. Using an established model for dengue, the risk estimate for RRV transmission is comparable in the same geographical region. Should transfusion be proven as a route of transmission, this supports consideration of appropriate mitigation strategies to safeguard blood recipients.
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Affiliation(s)
- G Shang
- Virus and Inflammation Research Group, Faculty of Applied Science, University of Canberra, ACT, Australia
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16
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Shang G, Wang JA, Liu Y, Li YP, Gan YQ, Zhu XL, Dai ZZ. [Advances in the study of thermal environmental conditions and health in China]. Wei Sheng Yan Jiu 2001; 30:383-4. [PMID: 12561629] [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: 02/28/2023]
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17
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Shang G, Dai J, Wang Y. Construction of a stable bioengineered strain of biotechmycin. Chin J Biotechnol 2000; 15:105-11. [PMID: 10719630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
A stable bioengineered strain of Biotechmycin (Streptomyces spiramyceticus WSJ-1) was constructed by integrating the 4"-isovaleryltransferase gene (ist) through homologous recombination into the chromosome of spiramycin-producing strain S.spiramyceticus F21. In this construction, a Streptomyces/E.coli shuttle plasmid pKC1139 (AmR) was used as the vector and tsr gene was inserted as the marker for selection of homologous recombination. This constructed strain, S.spiramyceticus WSJ-1, was genetically very stable in production titer and in the production of biotechmycin as well as in carrying tsr selective marker when grown without pressure. The fermentation of S.spiramyceticus WSJ-1 was also improved compared with the original strain harboring unintegrated plasmid. Southern hybridization confirmed the integrated status of the ist gene in the host genome.
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Affiliation(s)
- G Shang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Beijing, China
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18
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Shang G, Jiang Y, Tang H, Fan Y, Wang S, Dong G, Wang J. [Determination of glutamine in intestinal mucosa by pre-column derivatization/reversed-phase high performance liquid chromatography with fluorescence detection]. Se Pu 1997; 15:474-6. [PMID: 15739325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
A high performance liquid chromatographic pre-column derivatization method with fluorescence detection for the analysis of glutamine (Gln) in rat intestinal mucosa is presented. Gln was derivatized with o-phthalaldehyde and 3-mercaptopropionic acid under an alkaline condition and separated by reversed-phase liquid chromatography on a Lichrosorb RP18 column (150 mm x 4.6 mm i.d., 5 microm). The mobile phase was consisted of 50 mmol/L phosphate buffer (pH 7.0)-acetonitrile (94:6, V/V) with a flow rate of 2.0 mL/min. The excited and emitted wavelength were selected at 230 nm and 389 nm respectively. The volume ratio of samples and derivatization reagent solution was 4:1 (V/V). The detection limit of Gln was 25 micromol/L (S/N= 3.5) and the regression equation was A = 16.9405C + 179.9339, r = 0.9996 at the linear range of 50-3200 micromol/L. The day-to-day deviation was 6.97% (n = 3) and the retention time of Gln was 3.158 min. This method is rapid, simple and highly sensitive, and has been applied to the determination of Gln in intestinal mucosa.
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Affiliation(s)
- G Shang
- Clinical Pharmacology Laboratory of Xijing Hospital, Fourth Military Medical University , Xi'an, 710032
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19
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Abstract
Immunohistochemical methods were used to search for Fas receptor/Fas ligand system involvement in multiple sclerosis (MS) white matter brain lesions. We found large numbers of Fas ligand (Fas-L)-bearing cells present in two acute lesions and 12 of 16 chronic MS lesions, and very few positive cells in non-inflammatory controls. Four of six brains from non-MS neuropathologic conditions associated with inflammation and white matter disease were, however, also positive for Fas-L. Double staining with cell-specific markers revealed that the pattern of ligand-positive cells in chronic MS lesions was complex and composed of several different cell types which were primarily resident glial cells with a small overlay of macrophages. Fas/APO 1 (CD95) receptor expression in MS tissue was also evaluated and marked upregulation of the receptor was found. In addition, Fas receptor was induced, but to a lesser extent, in numerous control brains. The observations that TUNEL-positive dying cells were present in MS lesions and showed excellent co-localization with Fas-L, indicate that the Fas death system may contribute to plaque pathogenesis and could lead to the development of a new category of therapeutic agents for MS.
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Affiliation(s)
- P Dowling
- Neurology Service, Department of Veterans Affairs Medical Center, East Orange, New Jersey 07018, USA
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20
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Huang Z, Li Z, Zhao D, Hu X, Peng M, Liu X, Shang G, Cui X. [Identification of head skeleton of 10 snake drugs]. Zhongguo Zhong Yao Za Zhi 1990; 15:517-20, 575. [PMID: 2092709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Z Huang
- Faculty of Pharmacy, Hebei Medical College, Shijiazhuang
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