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Zhang Y, Luo L, Gan P, Chen X, Li X, Pang Y, Yu X, Yu K. Exposure to pentachlorophenol destructs the symbiotic relationship between zooxanthellae and host and induces pathema in coral Porites lutea. Sci Total Environ 2024; 907:167956. [PMID: 37884147 DOI: 10.1016/j.scitotenv.2023.167956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/17/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023]
Abstract
Stress from chemical pollutants is among the key issues that have adverse impacts on coral reefs. As a persistent organic pollutant, pentachlorophenol (PCP) has been detected in the seawater of Weizhou Island and was proved to have significant adverse effects on aquatic animals. However, little is known about its effects on scleractinian coral. Therefore, we investigated the response of the coral Porites lutea to PCP stress. Coral bleaching, photosynthesis parameters and antioxidant enzyme activities of P. lutea under PCP exposure were documented. After 96 h of exposure, significant tissue loss and bleaching occurred when the PCP concentration exceeded 100 μg/L. The density of symbiotic zooxanthellae decreased from 2.06 × 106 cells/cm2 to 0.93 × 106 cells/cm2 when the PCP concentration increased from 1 μg/L- 1000 μg/L. Long-term exposure of 120 days to PCP at 0.1 μg/L also led to coral bleaching, the maximum photochemical quantum yield of PSII in P. lutea nubbins significantly decreased to 0.482. The analysis of microbial community distribution indicated that the increase of the pathogenic bacterium Citrobacter may be one of the inducers of coral bleaching. Conjoint analysis of transcriptomics and proteomics showed that the metabolism of amino acids and carbohydrates in zooxanthellae was abnormal, leading to the destruction of its symbiotic relationship with the host. The immune system of the host was disrupted, which could be linked to the prevalence of coral pathema. The toxic responses of PCP on both zooxanthellae and its host were further confirmed by the upregulation of the differential metabolites including 1-naphthylamine and phosphatidylcholine, etc.
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Affiliation(s)
- Yuanyuan Zhang
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China
| | - Lan Luo
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Pin Gan
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Xuan Chen
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Xiaoli Li
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Yan Pang
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Xiaopeng Yu
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Kefu Yu
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China.
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Feng XL, Lu YB, Yang D, Xue Q, Zhang JL, Lin CR, Gan P, Zhang WH, Guang XF, Dai HL. [Classification, diagnosis and treatment status of pulmonary hypertension from 2012 to 2019: a single center study in Yunnan province]. Zhonghua Xin Xue Guan Bing Za Zhi 2023; 51:1188-1193. [PMID: 37963755 DOI: 10.3760/cma.j.cn112148-20230919-00173] [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: 11/16/2023]
Abstract
Objective: To analyze the classification, diagnosis and treatment status of patients with pulmonary hypertension (PH) in Yunnan province. Methods: This was a retrospective study. Hospitalized patients with PH at Yan'an Affiliated Hospital of Kunming Medical University from January 2012 to December 2019 were enrolled. The clinical data of enrolled patients, including demographic data, comorbidities, targeted drug therapy, echocardiography and right heart catheterization results, were obtained through the electronic medical record system. The composition ratio of PH, diagnosis and treatment were analyzed. Results: A total of 13 590 patients with PH were enrolled, accounting for 3.09% (13 590/440 056) of the total number of hospitalizations during the same period. The composition of PH was predominantly pulmonary arterial hypertension (PAH) (55.50% (7 542/13 590)), followed by pulmonary hypertension (PH) caused by left heart disease (24.16% (3 284/13 590)). Among them, PAH could be subdivided into four types: idiopathic pulmonary arterial hypertension (IPAH), PAH associated with connective tissue disease, PAH associated with portal hypertension, and PAH associated with congenital heart disease (CHD-PAH), with CHD-PAH as the predominating type (98.09% (7 398/7 542). Patients with PAH were predominantly adolescents. In hospitalized patients with PH, from 2012 to 2019, the proportion of children and adolescents showed a decreasing trend from year to year, and the proportion of middle-aged and older adults showed a significant increasing trend, and the proportion of female patients showed a gradual decreasing trend, and the proportion of patients with comorbid hypertension, diabetes mellitus, coronary artery disease, arrhythmia, and pneumonia showed an increasing trend. A total of 1 034 patients (7.61% (1 034/13 590)) underwent right heart catheterization. The concordance rate between echocardiographic and right heart catheterization findings was (86.98% (875/1 006)). A total of 2 574 (18.94%) of PH patients were treated with PAH targeted drugs, of which 58.16% (1 497/2 574) were treated with monotherapy. Among the PH patients treated with PAH targeted drugs, the majority of patients were PAH patients (86.44% (2 225/2 574)), and 83.53% (2 150/2 574) patients treated with PAH targeted drugs were CHD-PAH. Conclusions: Hospitalized PH patients in our center between 2012 and 2019 are predominantly CHD-PAH, and the proportion of patients receiving right heart catheterization and targeted drug therapy is relatively low. The percentage of middle-aged and elderly PH patients shows an increasing trend from year to year, as well as the percentage of those with concomitant comorbidities.
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Affiliation(s)
- X L Feng
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - Y B Lu
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - D Yang
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - Q Xue
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - J L Zhang
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - C R Lin
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - P Gan
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - W H Zhang
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - X F Guang
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
| | - H L Dai
- Department of Cardiology, Yan'an Affiliated Hospital, Kunming Medical University, Clinical Medicine Center and Key Laboratory for Cardiovascular Disease of Yunnan Province, Kunming 650051, China
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Chen X, Huang K, Gan P, Luo L, Yu K, Zhang Y, Pang Y, Xue P. Inactivation of Heterosigma akashiwo under UV/peroxydisulfate advanced disinfection system in marine waters. Chemosphere 2023; 341:140055. [PMID: 37704084 DOI: 10.1016/j.chemosphere.2023.140055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/09/2023] [Accepted: 09/02/2023] [Indexed: 09/15/2023]
Abstract
Heterosigma akashiwo (H. akashiwo) is recognized as a harmful algal bloom (HABs) species with a global distribution, capable of posing significant threats to marine ecosystems, particularly when spread through ship ballast water. This investigation focused on elucidating the inactivation kinetics and underlying mechanism of H. akashiwo through a combined ultraviolet irradiation and peroxydisulfate (UV/PDS) process. The results demonstrated a strong synergistic effect within the UV/PDS system, resulting in an inactivation of 0.78-ln and 2.67-ln within 40 min of UV and UV/PDS processes. The principal agents accountable for inactivation were identified as sulfate radicals (•SO4-) and hydroxyl radical (•OH), which exhibited a synergistic effect in the UV/PDS process. Furthermore, the study observed a negatively impact of seawater pH and salinity on the efficiency of inactivation. UV/PDS caused oxidative stress on algal cells, initially involving the participation of antioxidant enzymes in counteracting cellular damage, but this protective mechanism diminished as the reaction duration extended. The UV/PDS treatment not only inflicted damage upon H. akashiwo's photosynthetic system but also caused the extracellular release of DNA and algal organic matter (AOM) due to damaged cell membranes. Transcriptome analysis provided a molecular biology perspective on the cellular inactivation process. Upregulation of genes linked to photosynthesis and oxidative phosphorylation suggested a potential elevation in energy metabolism. In contrast, genes associated with cellular and metabolic processes, including glycolysis and the tricarboxylic acid cycle (TCA cycle), exhibited downregulation. Moreover, this treatment exerted an inhibitory influence on RNA polymerase and protein synthesis, resulting in the reduced expression of genetic information.
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Affiliation(s)
- Xuan Chen
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Kunling Huang
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Pin Gan
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Lan Luo
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Kefu Yu
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China Globally Distributed
| | - Yuanyuan Zhang
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519000, China Globally Distributed.
| | - Yunfeng Pang
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
| | - Pengfei Xue
- School of Marine Sciences, Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, China
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Zhang Y, Huang K, Chen X, Wei M, Yu X, Su H, Gan P, Yu K. Inactivation of Ciliate Uronema Marinum under UV/Peroxydisulfate Advanced Disinfection System in Marine Water. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122563] [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: 11/06/2022]
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Xue Q, Yang D, Zhang J, Gan P, Lin C, Lu Y, Zhang W, Zhang L, Guang X. USP7, negatively regulated by miR-409-5p, aggravates hypoxia-induced cardiomyocyte injury. APMIS 2020; 129:152-162. [PMID: 33241864 DOI: 10.1111/apm.13100] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 11/18/2020] [Indexed: 12/01/2022]
Abstract
Hypoxia-induced apoptosis is linked to the pathogenesis of myocardial infarction (MI) and heart failure. Ubiquitin-specific peptidase 7 (USP7) is related to catabolic/pro-apoptotic signaling. However, its role in cardiomyocyte injury is unclear. In this study, we aimed to investigate the role and the underlying regulatory mechanism of USP7 in MI. H9c2 cardiomyocytes were cultured in hypoxia to establish an in vitro model of myocardial hypoxic/ischemic injury. Sprague-Dawley (SD) rats were used to establish animal models with MI. Quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot assays were performed to evaluate the expression levels of miR-409-5p, USP7, and p53, respectively. After USP7 and miR-409-5p were selectively regulated in H9c2 cells, the inflammatory response, apoptosis, and cell viability were detected by ELISA, flow cytometry, and MTT assay, respectively. The interaction between USP7 and miR-409-5p was determined by bioinformatics analysis, qRT-PCR, Western blot, and dual-luciferase reporter assay. LVEF, LVIDd, and LVIDs of rats after MI were also measured. USP7 expression was markedly elevated while miR-409-5p expression was significantly down-regulated in H9c2 cells under hypoxic culture. Augmentation of USP7 expression led to a dramatic promotion of hypoxia-induced apoptosis of cardiomyocytes, accompanied by an increase in the secretion of the cytokines IL-1β, TNF-α, and IL-6. Myocardial injury markers LDH, cTnI, and CK-MB expressions were also increased. Besides, overexpression of USP7 aggravated left ventricular remodeling and decreased left ventricular function of the rats. Conversely, the up-regulation of miR-409-5p expression protected H9c2 cells from apoptosis and inhibited the release of cytokines and myocardial injury. Left ventricular remodeling and left ventricular function were also improved by miR-409-5p overexpression. Furthermore, USP7 was identified as a target of miR-409-5p and the overexpression of miR-409-5p reversed the effects of USP7 on H9c2 cells. USP7 exacerbates myocardial ischemic injury by promoting inflammation and apoptosis of cardiomyocytes, and the up-regulation of its expression is partly caused by the down-regulation of miR-409-5p expression.
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Affiliation(s)
- Qiang Xue
- Department of Cardiology, Yanan Hospital of Kunming, Kunming, Yunnan, China
| | - Dong Yang
- Department of Cardiology, Yanan Hospital of Kunming, Kunming, Yunnan, China
| | - Jilei Zhang
- Department of Cardiology, Yanan Hospital of Kunming, Kunming, Yunnan, China
| | - Pin Gan
- Department of Cardiology, Yanan Hospital of Kunming, Kunming, Yunnan, China
| | - Chunrong Lin
- Department of Cardiology, Yanan Hospital of Kunming, Kunming, Yunnan, China
| | - Yibing Lu
- Department of Cardiology, Yanan Hospital of Kunming, Kunming, Yunnan, China
| | - Weihua Zhang
- Department of Cardiology, Yanan Hospital of Kunming, Kunming, Yunnan, China
| | - Li Zhang
- Department of Neurology, Yanan Hospital of Kunming, Kunming, Yunnan, China
| | - Xuefeng Guang
- Department of Cardiology, Yanan Hospital of Kunming, Kunming, Yunnan, China
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Biju RD, O’ Sullivan J, Thomas A, Gan P, Muthu T. A rare case of intralesional haemorrhage of a benign aqueductal cyst after CSF diversion treatment. A case report and review of literature. Br J Neurosurg 2020:1-5. [DOI: 10.1080/02688697.2020.1742295] [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: 10/24/2022]
Affiliation(s)
- R. D. Biju
- Department of Neurosurgery, Waikato Hospital, Hamilton, New Zealand
| | - J. O’ Sullivan
- Department of Neurosurgery, Waikato Hospital, Hamilton, New Zealand
| | - A. Thomas
- Department of Radiology, Waikato Hospital, Hamilton, New Zealand
| | - P. Gan
- Department of Neurosurgery, Waikato Hospital, Hamilton, New Zealand
| | - T. Muthu
- Department of Neurosurgery, Waikato Hospital, Hamilton, New Zealand
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Gan P, Tsushima A, Hiroyama R, Narusaka M, Takano Y, Narusaka Y, Kawaradani M, Damm U, Shirasu K. Colletotrichum shisoi sp. nov., an anthracnose pathogen of Perilla frutescens in Japan: molecular phylogenetic, morphological and genomic evidence. Sci Rep 2019; 9:13349. [PMID: 31527702 PMCID: PMC6746953 DOI: 10.1038/s41598-019-50076-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 01/11/2019] [Accepted: 09/05/2019] [Indexed: 11/09/2022] Open
Abstract
Species of the fungal genus Colletotrichum are among the most devastating pathogens of agricultural crops in the world. Based on DNA sequence data (ITS, GAPDH, CHS-1, ACT, TUB2) and morphology, we revealed Colletotrichum isolates infecting the oil crop Perilla frutescens, commonly known as shiso, to represent a previously unknown species of the C. destructivum species complex and described it as C. shisoi. We found that C. shisoi appears to be able to adopt a hemibiotrophic lifestyle, characterised by the formation of biotrophic hyphae followed by severe necrotic lesions on P. frutescens, but is less virulent on Arabidopsis, compared to its close relative C. higginsianum which also belongs to the C. destructivum species complex. The genome of C. shisoi was sequenced, annotated and its predicted proteome compared with four other Colletotrichum species. The predicted proteomes of C. shisoi and C. higginsianum, share many candidate effectors, which are small, secreted proteins that may contribute to infection. Interestingly, C. destructivum species complex-specific secreted proteins showed evidence of increased diversifying selection which may be related to their host specificities.
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Affiliation(s)
- P Gan
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
| | - A Tsushima
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan.,Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - R Hiroyama
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
| | - M Narusaka
- Research Institute for Biological Sciences, Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries, Okayama, Japan
| | - Y Takano
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Y Narusaka
- Research Institute for Biological Sciences, Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries, Okayama, Japan
| | - M Kawaradani
- Research Institute of Environment, Agriculture and Fisheries, Osaka, Japan
| | - U Damm
- Senckenberg Museum of Natural History Görlitz, 02806, Görlitz, Germany
| | - K Shirasu
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan. .,Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan.
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Gan P, Tsushima A, Narusaka M, Narusaka Y, Takano Y, Kubo Y, Shirasu K. Genome Sequence Resources for Four Phytopathogenic Fungi from the Colletotrichum orbiculare Species Complex. Mol Plant Microbe Interact 2019; 32:1088-1090. [PMID: 30893003 DOI: 10.1094/mpmi-12-18-0352-a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Colletotrichum orbiculare species complex fungi are hemibiotrophic plant pathogens that cause anthracnose of field crops and weeds. Members of this group have genomes that are remarkably expanded relative to other Colletotrichum fungi and compartmentalized into AT-rich, gene-poor and GC-rich, gene-rich regions. Here, we present an updated version of the C. orbiculare genome, as well as draft genomes of three other members from the C. orbiculare species complex: the alfalfa pathogen C. trifolii, the prickly mallow pathogen C. sidae, and the burweed pathogen C. spinosum. The data reported here will be important for comparative genomics analyses to identify factors that play a role in the evolution and maintenance of the expanded, compartmentalized genomes of these fungi, which may contribute to their pathogenicity.
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Affiliation(s)
- P Gan
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
| | - A Tsushima
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
- Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
| | - M Narusaka
- Research Institute for Biological Sciences Okayama, Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries, Okayama, Japan
| | - Y Narusaka
- Research Institute for Biological Sciences Okayama, Okayama Prefectural Technology Center for Agriculture, Forestry, and Fisheries, Okayama, Japan
| | - Y Takano
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Y Kubo
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto, Japan
| | - K Shirasu
- RIKEN Center for Sustainable Resource Sciences, Yokohama, Kanagawa, Japan
- Graduate School of Science, The University of Tokyo, Bunkyo, Tokyo, Japan
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Li XH, Li K, Zhang H, Gan P, Luo HQ, Han ZQ, Mehmood K, Shahzad M. Epidemiological investigation and risk factors of Peste des petitis ruminants (PPR) in yaks (Bos grunniens) and cattle in five regions of China. Trop Biomed 2018; 35:736-743. [PMID: 33601760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
To investigate the prevalence of Peste des petitis ruminants in yaks and cattle in poorly studied areas of China. A total of 1202 and 560 blood samples were collected from yaks and cattle, respectively and processed using a commercial ELISA kit. Multivariable logistic regression model was piloted to find the variables, potentially associated with exposure of PPR infection in yaks and cattle. Results indicated that the overall prevalence of PPR in yaks was 11.2%. A total 66 (11.8%) out of 560 were examined out to be positive to PPR in cattle in Jiangxi province. According to conditional stepwise logistic regression, region, age and gender were found to be the more influencing risk factors in yaks, while region and age were found to be the potential risk factors in cattle. The current results reported the prevalence and associated risk factors of PPR in bovine for the first time in China.
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Affiliation(s)
- X H Li
- College of Animal Science, Wenzhou Vocational College of Science and Technology, Wenzhou 325006, People's Republic of China
| | - K Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - H Zhang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - P Gan
- Jiangxi Animal Disease Prevention and Control Center, Nanchang, Jiangxi 330096, People's Republic of China
| | - H Q Luo
- College of Animal Science, Wenzhou Vocational College of Science and Technology, Wenzhou 325006, People's Republic of China
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Z Q Han
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
- College of Agriculture and Forestry Science, Linyi University, Linyi 276005, People's Republic of China
| | - K Mehmood
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
- 5University College of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, 63100 Pakistan
| | - M Shahzad
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
- 5University College of Veterinary and Animal Sciences, The Islamia University of Bahawalpur, 63100 Pakistan
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Chen CY, Gan P, How CH. Corrigendum: Approach to frailty in the elderly in primary care and the community. Singapore Med J 2018; 59:338. [DOI: 10.11622/smedj.2018074] [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: 11/18/2022]
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Gan P, Narusaka M, Tsushima A, Narusaka Y, Takano Y, Shirasu K. Draft Genome Assembly of Colletotrichum chlorophyti, a Pathogen of Herbaceous Plants. Genome Announc 2017; 5:e01733-16. [PMID: 28280027 PMCID: PMC5347247 DOI: 10.1128/genomea.01733-16] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 01/11/2017] [Indexed: 12/14/2022]
Abstract
Colletotrichum chlorophyti is a fungal pathogen that infects various herbaceous plants, including crops such as legumes, tomato, and soybean. Here, we present the genome of C. chlorophyti NTL11, isolated from tomato. Analysis of this genome will allow a clearer understanding of the molecular mechanisms underlying fungal host range and pathogenicity.
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Affiliation(s)
- P Gan
- RIKEN Center for Sustainable Resource Science, Kanagawa, Japan
| | - M Narusaka
- Research Institute of Biological Sciences, Okayama, Japan
| | - A Tsushima
- RIKEN Center for Sustainable Resource Science, Kanagawa, Japan
- Graduate School of Science, University of Tokyo, Tokyo, Japan
| | - Y Narusaka
- Research Institute of Biological Sciences, Okayama, Japan
| | - Y Takano
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - K Shirasu
- RIKEN Center for Sustainable Resource Science, Kanagawa, Japan
- Graduate School of Science, University of Tokyo, Tokyo, Japan
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12
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Dai YG, Gan P, Li WM, Yao Q, Li Y, Pei B, Cui J. [Effects of tetrahydrobiopterin on the angiogenesis in hepatocellular carcinoma]. Zhonghua Zhong Liu Za Zhi 2016; 38:806-811. [PMID: 27998437 DOI: 10.3760/cma.j.issn.0253-3766.2016.11.002] [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: 11/05/2022]
Abstract
Objective: To investigate the effect and mechanism of tetrahydrobiopterin (BH4) on the angiogenesis in hepatocellular carcinoma (HCC). Methods: BALB/c-nu mice were subcutaneously injected with HepG-2 cells and randomly divided into control and BH4 groups. The BH4 group and control group received 20 mg/kg BH4 or saline by intraperitoneal injection daily for two weeks, respectively. The level of BH4 was measured by high performance liquid chromatography (HPLC), the level of nitric oxide (NO) was measured by Griess test array, the transcriptional level of K-ras was measured by quantitative RT-PCR, and the protein expressions of guanosine triphosphate cyclohydrolase Ⅰ(GTPCH), endothelial nitric oxide synthase (eNOS), phospho-Akt and Akt were determined by Western blot. Results: BH4 level in the tumor tissues of BH4 group was (0.24±0.02) μg/ml, significantly higher than the (0.17±0.01) μg/ml in the control group (P<0.01). The level of NO in the tumor tissues of BH4 group was (51.44±2.90) mmol/L, significantly higher than the (24.77±0.54) mmol/L in the control group (P<0.01). The tumor volume of BH4 group was (191.05±8.70) mm3, significantly higher than the (103.10±5.03) mm3 in the control group (P<0.01). The expressions of CD34, K-ras, phospho-eNOS, phospho-Akt and GTPCH were significantly up-regulated in the tumor tissues of BH4 group when compared with those of the control group (P<0.01). Conclusions: BH4 recognized as an essential cofactor of eNOS can increase tumor-produced NO by activating the wild-type Ras-PI3K/Akt pathway, thus induces angiogenesis. This might provide a novel and promising way to control the progression of hepatocellular carcinoma through targeting BH4 synthesis pathway and inhibiting angiogenesis.
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Affiliation(s)
- Y G Dai
- Department of Abdominal Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - P Gan
- Department of Abdominal Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - W M Li
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, China
| | - Q Yao
- Yunnan Cancer Research Institute, Kunming 650118, China
| | - Y Li
- Department of Abdominal Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - B Pei
- Department of Abdominal Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - J Cui
- Department of Pathology, The Second Affiliated Hospital of Kunming Medical University, Kunming 650101, China
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Abstract
Anarchic hand syndrome (AHS) is a rare disorder characterized by unwilled, but seemingly purposeful movements of the affected upper limb which are perceived by the patients not to be under their control. It often interferes with goal-directed movements and bimanual tasks. At present there is no effective method of treatment of AHS. We report here a case of AHS following resection of a frontal lobe tumor and describe its effects on the patient's functional activities. The patient used avoidance behavior and mental concentration to overcome the disabling effect of AHS. These strategies appear to be useful in the management of AHS.
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Affiliation(s)
- A M O Bakheit
- Moseley Hall Hospital, Alcester Road, Birmingham, UK.
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Li X, Gan P, Peng R, Huang C, Yu H. Determination of 23 Organophosphorous Pesticides in Surface Water Using SPME Followed by GC-MS. J Chromatogr Sci 2010; 48:183-7. [DOI: 10.1093/chromsci/48.3.183] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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15
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Fu D, Ng YK, Gan P, Ling EA. Permanent occlusion of the middle cerebral artery upregulates expression of cytokines and neuronal nitric oxide synthase in the spinal cord and urinary bladder in the adult rat. Neuroscience 2004; 125:819-31. [PMID: 15120843 DOI: 10.1016/j.neuroscience.2004.02.012] [Citation(s) in RCA: 20] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2003] [Revised: 01/18/2004] [Accepted: 02/04/2004] [Indexed: 01/16/2023]
Abstract
The expression pattern of proinflammatory cytokines, neuronal nitric oxide synthase (nNOS), substance P (SP) and calcitonin gene related peptide (CGRP) in the spinal cord and the bladder in response to permanent middle cerebral artery occlusion (MCAO) was investigated. In this connection, the gene expression of tumor necrosis factor alpha (TNF-alpha), interleukin-1 beta (IL-1beta) and interleukin-6 in the lumbosacral spinal cord and the bladder as determined by real-time polymerase chain reaction was upregulated. In the spinal cord, the immunoreactivity of TNF-alpha and IL-1beta was mainly localized in the ventral horn motoneurons contralateral to MCAO. In the bladder, TNF-alpha was mainly expressed in the inflammatory cells. The expression of nNOS immunoreactivity as well as nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d) staining in the spinal cord and bladder was also markedly increased in response to MCAO. Furthermore, the temporal and spatial expression of nNOS paralleled that of TNF-alpha and IL-1beta in the spinal cord. On the other hand, there was no noticeable change in gene expression and immunoreactivity of SP and CGRP. The present results have shown that cytokines and nNOS expression are elevated in areas far removed from the primary site of ischemic infarct, namely, the lumbosacral spinal cord and bladder. This together with some neuronal deaths maybe linked to the dysfunction of the latter in a clinical stroke. On the other hand, the apparent lack of SP and CGRP changes following MCAO suggests that the two neurotransmitters are not directly involved.
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Affiliation(s)
- D Fu
- Department of Anatomy, Faculty of Medicine, MD10, 4 Medical Drive, National University of Singapore, Singapore 117597
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16
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Gan P, Fan Y, Wang M. [Experiment of biodegradation of chlorobenzenes]. Huan Jing Ke Xue 2001; 22:93-6. [PMID: 11507916] [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: 02/21/2023]
Abstract
Four strains of microorganisms which were able to grow at the presence of 1,4-dichlorobenzene 1,2,4-trichlorobenzene and hexachlorobenzene were isolated from the sludge collected from two different sites after incubating about 2 months. During the growth of the mixed microorganisims on chlorobenzenes, the accumulating consumption of oxygen, the microbial population curve and the concentration of released Cl- were investigated. The result showed that the mixed microorganisms were able to utilize 1,4-dichlorobenzen and 1,2,4-trichlorobenzene as sole carbon source and energy source. The concentration of released Cl- may depend strongly on the activity of the living cells. The order in which the chlorobenzenes were readily degraded was 1,4-dichlorobenzenez[356.7 micrograms/(L.d)] > 1,2,4-trichlorobenzene[110.4 micrograms/(L.d)] > hexachlorobenzene[approximately 6 micrograms/(L.d)]. The number of the substituted chlorine on the chlorobenzenes directly resulted in the resistance to biodegradation.
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Affiliation(s)
- P Gan
- Research Center for Eco-Environmental Sciences, Chinese Acadamy of Sciences, Beijing 10085
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17
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Hu S, Gan P, Li J, Bi H. [The relationship between the mutation of methylenetetrahydrofolate reductase gene 677C-->T and the diabetic microangiopathy]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2001; 18:118-21. [PMID: 11295130] [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: 02/19/2023]
Abstract
OBJECTIVE To investigate the relationship between the mutation of methylenetetra- hydrofolate reductase gene 677C-->T and the diabetic microangiopathy(DMA) in diabetes mellitus(DM). METHODS A total of 168 subjects were divided into control group, DM group and DMA group(including diabetic nephropathy and diabetic retinopathy). PCR-restrictive fragment length polymorphism(RFLP) analysis was conducted to examine mutation, and then the frequency of mutation was statistically computed. RESULTS Markedly elevated mutation was observed in patients with diabetic nephropathy and diabetic retinopathy as compared with non-microangiopathy diabetes mellitus and normal people (20.8% vs 8.3% and 7.3%, P<0.01). The odds ratio of the TT genotype for DMA was 3.36, P<0.001. CONCLUSION It was found that the mutation of methylenetetrahydrofolate reductase gene 677C-->T was an impressibility factor of diabetic microangiopathy.
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Affiliation(s)
- S Hu
- Department of Endocrinology, People's Hospital, Wuhan University, Wuhan, Hubei 430060 P. R. China. husheng
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18
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Affiliation(s)
- M O Fitzpatrick
- Department of Neurosurgery, Institute of Neurological Sciences, Southern General Hospital NHS Trust, Glasgow G51 4TF
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Xiao X, Gan P, Yu M, Li J, Han Q. Effect of captopril on renal hemodynamics and renal prostaglandins in early type II diabetic patients with normo-or microalbuminuria. Chin Med Sci J 1996; 11:170-3. [PMID: 9387403] [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: 02/05/2023]
Abstract
In this study, we investigated the effect of captopril (CPT) on glomerular filtration rate (GFR), effective renal plasma flow (ERPF), filtration fraction (FF), urinary albumin excretion (UAE) and daily urinary excretion of thromboxane B2 (TXB2) and 6-keto- prostaglandin F1a (6-keto-PGF1a) in 29 normotensive non-insulin-dependent diabetes (NIDDM) patients without clinically discernible nephropathy. Before treatment, urinary excretion 6-keto-PGF1a was significantly increased (P < 0.05) in 29 NIDDM patients compared with 25 health subjects matched for age and sex. The values of GFR and FF were significantly higher (P < 0.01 and P < 0.005, respectively) in NIDDM than in normal volunters, whereas ERPF was comparable in both groups. Meanwhile we observed that UAE of early NIDDM was increased before treatment. After CPT treatment, GFR, FF, UAE and urinary excretion of 6-keto-PGF1a were significantly reduce (all P < 0.005) compared with those of NIDDM before treatment. These data indicated that CPT is effective in lowering glomerular filtration pressure and ameliorating microalbuminuria in the normotensive early NIDDM.
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Affiliation(s)
- X Xiao
- Department of Endocrinology, First Affiliated Hospital of Hubei Medical University, Wuhan
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