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Yan L, Yang JR, Wang HQ, Shao ZH. [The expression and correlation analysis of TOX and inhibitory receptors on peripheral blood CD8 +T cells in patients with aplastic anemia]. Zhonghua Yi Xue Za Zhi 2023; 103:2095-2099. [PMID: 37455127 DOI: 10.3760/cma.j.cn112137-20221122-02458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Objective: To investigate the expression levels of thymocyte selection related high mobility group proteins (TOX) and different inhibitory receptors in peripheral blood CD8+T cells of patients with aplastic anemia (AA), and to conduct correlation analysis. Methods: From September 2019 to November 2020, 27 AA patients in the Department of Hematology, General Hospital of Tianjin Medical University were retrospectively selected, including 21 males and 6 females, with a median age [M (Q1, Q3)] of 48 (30, 72) years. Thirty-three healthy controls, included 17 males and 16 females, with a median age of 46 (27, 69) years. The expression levels of TOX, programmed cell death receptor-1 (PD-1), T-cell immunoglobulin and mucin domain 3 (TIM-3), cytotoxic T-lymphocyte associated antigen-4 (CTLA-4), T-cell immune receptor with immunoglobulin (Ig) and immunoreceptor tyrosine-based inhibitory motif (ITIM) domain (TIGIT), perforin and granzyme B in peripheral blood CD8+T cells from AA patients and healthy controls were detected by flow cytometry. The correlation between TOX expression levels and different inhibitory receptors was analyzed using Pearson correlation analysis. Results: The expression levels of TOX, PD-1, TIM-3, CTLA-4, TIGIT, perforin, and granzyme B in peripheral blood CD8+T cells of AA patients were 47.33%(41.47%, 56.61%), (30.61±12.37)%, (39.94±10.84)%, (6.21±3.40)%, (51.45±20.21)%, (71.32±22.46)%, and (52.39±23.99)%, respectively, which were higher than those of healthy controls 27.32%(21.64%, 46.96%), (21.29±10.01)%, (21.11±3.00)%, (1.31±0.34)% (30.80±13.40)%, (46.72±22.53)%, (21.75±16.43)% (all P<0.05). The expression level of TOX in CD8+T cells was positively correlated with the expression levels of PD-1, TIM-3, CTLA-4, TIGIT, perforin, and granzyme B (r=0.49, 0.65, 0.70, 0.54, 0.58, 0.48, all P<0.05). Conclusion: The expression levels of TOX and different inhibitory receptors on peripheral blood CD8+T cells in AA patients are higher than those in the healthy control group, and the expression levels of TOX and different inhibitory receptors are positively correlated.
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Affiliation(s)
- L Yan
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - J R Yang
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - H Q Wang
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin 300052, China
| | - Z H Shao
- Department of Hematology, General Hospital of Tianjin Medical University, Tianjin 300052, China
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Yu Z, Peng X, Liu L, Yang JR, Zhai X, Xue Y, Mo Y, Yang J. Microbial one‑carbon and nitrogen metabolisms are beneficial to the reservoir recovery after cyanobacterial bloom. Sci Total Environ 2023; 856:159004. [PMID: 36155037 DOI: 10.1016/j.scitotenv.2022.159004] [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: 07/06/2022] [Revised: 09/03/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Cyanobacterial blooms have profound effects on the structure and function of plankton communities in inland waters, but few studies have focused on the effects of microbial-based processes in one‑carbon and nitrogen cycling on water quality improvement following the bloom. Here, we compared the structure and function of the bacterial community, focusing on microbial one‑carbon and nitrogen metabolisms during and after a cyanobacterial Microcystis bloom in a deep subtropical reservoir. Our data showed that microbial one‑carbon and nitrogen cycles were closely related to different periods of the bloom, and the changes of functional genes in microbial carbon and nitrogen cycling showed the same consistent trend as that of Methylomonas sp. With the receding of the bloom, the abundance of Methylomonas as well as the functional genes of microbial one‑carbon and nitrogen cycling reached the peak and then recovered. Our results indicate that microbial one‑carbon and nitrogen metabolisms were beneficial to the recovery of water quality from the cyanobacterial bloom. This study lays a foundation for a deep understanding of the cyanobacterial decomposition mediated by microbes in one‑carbon and nitrogen cycles in inland freshwaters.
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Affiliation(s)
- Zheng Yu
- Department of Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410083, China; Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Xuan Peng
- Department of Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410083, China
| | - Lemian Liu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Jun R Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Xingyu Zhai
- Department of Microbiology, Xiangya School of Medicine, Central South University, Changsha, Hunan 410083, China
| | - Yuanyuan Xue
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Yuanyuan Mo
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Jun Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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Yang Y, Chen H, Abdullah Al M, Ndayishimiye JC, Yang JR, Isabwe A, Luo A, Yang J. Urbanization reduces resource use efficiency of phytoplankton community by altering the environment and decreasing biodiversity. J Environ Sci (China) 2022; 112:140-151. [PMID: 34955197 DOI: 10.1016/j.jes.2021.05.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [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: 01/29/2021] [Revised: 05/01/2021] [Accepted: 05/01/2021] [Indexed: 06/14/2023]
Abstract
Urbanization often exerts multiple effects on aquatic and terrestrial organisms, including changes in biodiversity, species composition and ecosystem functions. However, the impacts of urbanization on river phytoplankton in subtropical urbanizing watersheds remain largely unknown. Here, we explored the effects of urbanization on phytoplankton community structure (i.e., biomass, community composition and diversity) and function (i.e., resource use efficiency) in a subtropical river at watershed scale in southeast China over 6 years. A total of 318 phytoplankton species belonging into 120 genera and 7 phyla were identified from 108 samples. Bacillariophyta biomass showed an increasing trend with increasing urbanization level. The phytoplankton community shifted from Chlorophyta dominance in rural upstream waters to Bacillariophyta dominance in urbanized downstream waters. Furthermore, phytoplankton diversity and resource use efficiency (RUE = phytoplankton biomass/total phosphorus) were significantly decreased with increasing urbanization level from upstream to downstream. Phytoplankton RUE exhibited a significant positive correlation with species richness, but a negative correlation with phytoplankton evenness. The variation in environmental factors (turbidity, total nitrogen, NH4+-N, total phosphorus, PO43--P and percentage urbanized area) was significantly correlated with phytoplankton diversity and RUE. Overall, our results revealed the influence of urbanization on phytoplankton community structure and ecosystem function was due to its altering the environmental conditions. Therefore, human-driven urbanization may play crucial roles in shaping the structure and function of phytoplankton communities in subtropical rivers, and the mechanism of this process can provide important information for freshwater sustainable uses, watershed management and conservation.
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Affiliation(s)
- Yigang Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huihuang Chen
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mamun Abdullah Al
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jean Claude Ndayishimiye
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Jun R Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Engineering Research Center of Ecology and Agricultural Use of Wetland (Ministry of Education), College of Agriculture, Yangtze University, Jingzhou 434025, China
| | - Alain Isabwe
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Anqi Luo
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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Tan F, Xiao P, Yang JR, Chen H, Jin L, Yang Y, Lin TF, Willis A, Yang J. Precision early detection of invasive and toxic cyanobacteria: A case study of Raphidiopsis raciborskii. Harmful Algae 2021; 110:102125. [PMID: 34887005 DOI: 10.1016/j.hal.2021.102125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 07/24/2021] [Revised: 10/13/2021] [Accepted: 10/16/2021] [Indexed: 06/13/2023]
Abstract
Blooms of the toxic cyanobacterium, Raphidiopsis raciborskii (basionym Cylindrospermopsis raciborskii), are becoming a major environmental issue in freshwater ecosystems globally. Our precision prevention and early detection of R. raciborskii blooms rely upon the accuracy and speed of the monitoring method. A duplex digital PCR (dPCR) monitoring approach was developed and validated to detect the abundance and toxin-producing potential of R. raciborskii simultaneously in both laboratory spiked and environmental samples. Results of dPCR were strongly correlated with traditional real time quantitative PCR (qPCR) and microscopy for both laboratory and environmental samples. However, discrepancies between methods were observed when measuring R. raciborskii at low abundance (1 - 105 cells L - 1), with dPCR showing a higher precision compared to qPCR at low cell concentration. Furthermore, the dPCR assay had the highest detection rate for over two hundred environmental samples especially under low abundance conditions, followed by microscopy and qPCR. dPCR assay had the advantages of simple operation, time-saving, high sensitivity and excellent reproducibility. Therefore, dPCR would be a fast and precise monitoring method for the early warning of toxic bloom-forming cyanobacterial species and assessment of water quality risks, which can improve prediction and prevention of the impacts of harmful cyanobacterial bloom events in inland waters.
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Affiliation(s)
- Fengjiao Tan
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Xiao
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Jun R Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Engineering Research Center of Ecology and Agricultural Use of Wetland (Ministry of Education), College of Agriculture, Yangtze University, Jingzhou 434025, China
| | - Huihuang Chen
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Jin
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yigang Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Tsair-Fuh Lin
- Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Anusuya Willis
- Australian National Algae Culture Collection, CSIRO, Hobart 7000, Tasmania, Australia
| | - Jun Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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5
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Dong XF, Zhong JT, Liu TQ, Yang JR. [Relationship of operation manner and postoperative recurrence of hepatocellular carcinoma]. Zhonghua Zhong Liu Za Zhi 2021; 43:635-637. [PMID: 34289554 DOI: 10.3760/cma.j.cn112152-20190614-00382] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Hepatocellular carcinoma (HCC) owns the high morbidity and mortality rates. Surgical resection is still the major pathway for the longer survival of HCC patients. Postoperative recurrence and metastasis have become the key impairment of prognosis of HCC patients. The relationship between tumor recurrence and surgical manner underwent by HCC patients is complicated and multiple factors are included. When the liver tumor was pressured during operation, tumor cells could be squeezed into blood flow via the broken vessels, which resulted in tumor metastasis. Besides, ischemia-reperfusion injury induced by Pringle maneuver during the liver blood blockade resulted in the immune destruction of liver and induced tumor recurrence.The destruction of physical barriers consisted of interstitial cells and normal liver cells was also a key factor for tumor recurrence. This paper summarizes the possible relationship between postoperative recurrence and surgical manner in HCC patients to provide the preventive suggestions for the postoperative recurrence of HCC patients.
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Affiliation(s)
- X F Dong
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - J T Zhong
- Department of Hepatobiliary Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Science, Jinan 250117, China
| | - T Q Liu
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - J R Yang
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
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6
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Dong XF, Zhong JT, Liu TQ, Chen YY, Tang YT, Yang JR. [Angiopoietin-2 regulates vessels encapsulated by tumor clusters positive hepatocellular carcinoma nest-type metastasis via integrin α5β1]. Zhonghua Yi Xue Za Zhi 2021; 101:654-660. [PMID: 33685048 DOI: 10.3760/cma.j.cn112137-20200605-01780] [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: 11/05/2022]
Abstract
Objective: To investigate the molecular mechanism of nest metastasis in blood vessels encapsulated by tumor clusters (VETC) positive hepatocellular carcinoma (HCC). Methods: A total of 72 paraffin embedded HCC tissue samples were collected. Immunohistochemistry staining with CD34 (vascular endothelial cell marker protein) was used to observe the morphological manifestations of VETC cancer nests in primary tumors, bile duct cancerous thrombi and portal vein cancerous thrombi, and to study the characteristics of hematogenous metastasis of VETC cancer nests. Bioinformatics was used to predict the key proteins closely related to VETC cancer nest formation. Immunohistochemistry was used to detect the expression of angiogenin-2 (Ang-2), integrin α5, Integrin β1, and cyclooxygenase-2 (COX-2) proteins in HCC. Transwell cell migration assay was used to detect the effect of Ang-2/integrin α5β1 protein on the migration ability of endothelial cells and HCC cells. Western blotting was used to detect the effect of Ang-2/integrin α5β1 protein on the activity of focal adhesion kinase (FAK) protein. Results: Of the collected HCC specimens, 27 cases (27/72) were VETC (+), including 3 cases with biliary duct cancerous thrombus, 5 cases with portal vein cancerous thrombus, and 3 cases with both biliary duct cancerous thrombus and portal vein cancerous thrombus. VETC (+) HCC could metastasize to portal vein, bile duct, and liver in the form of cancer nest, and the nests retain their intact structure. Ang-2, integrin α5 and integrin β1 were overexpressed in tumor cells and endothelial cells of VETC (+) HCC nests, while COX-2 was only overexpressed in tumor cells of VETC (+) HCC nest. Ang-2 could promote the migration of HCC cell [(121±12) vs (186±11), P<0.01] and endothelial cells [(81±7) vs (163±14), P<0.01]. Integrin α5β1 activation antagonist ATN-161 could significantly block the ability of Ang-2 to promote the migration of HCC cells [(185±10) vs (135±9), P<0.05] and endothelial cells [(156±14) vs (103±6), P<0.05]. ATN-161 could significantly block the phosphorylation of FAK in HCC and endothelial cells induced by Ang-2. Conclusions: VETC (+) HCC could metastasize as a whole in a nested form, and possesses a specific regulatory protein. Ang-2/α5β1/FAK might be potential protein targets in the treatment of VETC (+) HCC nest-type metastasis.
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Affiliation(s)
- X F Dong
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
| | - J T Zhong
- Department of Hepatobiliary Surgery,Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - T Q Liu
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
| | - Y Y Chen
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
| | - Y T Tang
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
| | - J R Yang
- Department of Hepatobiliary, Pancreas and Spleen Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region,Nanning 530021,China
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Yang JR, Yu X, Chen H, Kuo YM, Yang J. Structural and functional variations of phytoplankton communities in the face of multiple disturbances. J Environ Sci (China) 2021; 100:287-297. [PMID: 33279042 DOI: 10.1016/j.jes.2020.07.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 05/19/2020] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 06/12/2023]
Abstract
The global decline of freshwater biodiversity caused by climate change and human activities are supposed to disrupt ecosystem services related to water quality and alter the structure and function of aquatic communities across space and time, yet the effects of the combination of these factors on plankton community ecosystem has received relatively little attention. This study aimed to explore the impacts of disturbances (e.g. human activity, temperature, precipitation, and water level) on phytoplankton community structure (i.e. community evenness and community composition) and function (i.e. resource use efficiency) in four subtropical reservoirs over 7 years from 2010 to 2016. Our results showed that community turnover (measured as community dissimilarity) was positively related to disturbance frequency, but no significant correlation was found between phytoplankton biodiversity (i.e. evenness) and disturbance frequency. Phytoplankton resource use efficiency (RUE = phytoplankton biomass/ total phosphorus) was increased with a higher frequency of disturbance with an exception of cyanobacteria. The RUE of Cyanobacteria and diatoms showed significantly negative correlations with their community evenness, while the RUE of Chlorophyta exhibited a positive correlation with their community turnover. We suggest that multiple environmental disturbances may play crucial roles in shaping the structure and functioning of plankton communities in subtropical reservoirs, and mechanism of this process can provide key information for freshwater uses, management and conservation.
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Affiliation(s)
- Jun R Yang
- Engineering Research Center of Ecology and Agricultural Use of Wetland (Ministry of Education), College of Agriculture, Yangtze University, Jingzhou 434025, China; Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Xiaoqing Yu
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Huihuang Chen
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Yi-Ming Kuo
- School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Jun Yang
- Aquatic Ecohealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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Yu X, Yang JR, Chen J, Isabwe A, Yang J. On the use of chemotaxonomy, a phytoplankton identification and quantification method based on pigment for quick surveys of subtropical reservoirs. Environ Sci Pollut Res Int 2021; 28:3544-3555. [PMID: 32920686 DOI: 10.1007/s11356-020-10704-4] [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: 02/22/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
Traditionally, composition and biomass of phytoplankton communities are determined by microscopy, but this method is time-consuming and so does not allow for high-frequency data acquisition across space and time. Pigment-based chemotaxonomy (CHEMTAX) is now widely applied to study of phytoplankton community structure on broader spatial and temporal scales of oceans, but the ability of this approach to provide estimates of phytoplankton assemblage in freshwater ecosystems is yet underdeveloped. To investigate the efficiency of the high-performance liquid chromatography (HPLC)-CHEMTAX in quantifying the different phytoplankton groups in inland freshwater, we present a comparison between phytoplankton pigment analyses by HPLC with CHEMTAX and microscopic counting of phytoplankton samples from four subtropical reservoirs in January and July 2014, respectively. The correlation between pigment and phytoplankton abundance detected by microscopy was stronger than that between pigment and phytoplankton biomass. The published marker pigments and their revised ratios can be used to describe phytoplankton abundances in a mixed community of freshwater phytoplankton, and pigment-based CHEMTAX can successfully describe the overall pattern of phytoplankton community dynamics during different seasons. The use of pigment-based CHEMTAX for quick surveys of phytoplankton communities can be recommended as a useful supplement or alternative tool to microscopy for freshwater ecosystem management.
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Affiliation(s)
- Xiaoqing Yu
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Jun R Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
- Engineering Research Center of Ecology and Agricultural Use of Wetland (Ministry of Education), College of Agriculture, Yangtze University, Jingzhou, 434025, China
| | - Jixin Chen
- College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Alain Isabwe
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China
| | - Jun Yang
- Aquatic EcoHealth Group, Fujian Key Laboratory of Watershed Ecology, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China.
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9
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Dong XF, Zhong JT, Chen YY, Liu TQ, Yang JR. [Research progress in the Hepatobiliary Surgery operation of hepatic hilar plate system]. Zhonghua Wai Ke Za Zhi 2020; 58:555-557. [PMID: 32610427 DOI: 10.3760/cma.j.cn112139-20191010-00503] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
An estimate of about 50% of new liver cancer cases worldwide occur in China every year.Surgical resection is still the major treatment choice for longer survival of patients with hepatocellular carcinoma. Blocking hepatic blood flow and reducing intraoperative bleeding ensure the success of the operation. Anatomic separation of hepatic hilar region is the precondition of hepatic inflow occlusion. The hepatic hilar plate system involves a thick layer of connective tissue covering the hepatic inflow ducts of hepatic hilar region. The descending part of hilar plate assists in reducing the anatomical difficulty of the hepatic hilar region. The "forth porta hepatis" that is hidden in the hepatic hilar plate system involves the accumulation area of "short hepatic portal veins" .The communicating branch vessels between the hepatic inflow vessels form the anatomical basis in reducing the indocyanine green fluorescence stain effect.The relatively fixed position of the hepatic portal plate is considered as a positioning marker for accurate liver resection. The intrahepatic Glisson sheath is connected with thick connective tissue of the hepatic portal panel system, and is regarded as the physical barrier in limiting the proliferation and hypertrophy of hepatocytes and continuation of hepatic portal panel system in the liver.This paper summarizes the anatomy and application of hepatic hilar plate system during hepatobiliary surgery.
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Affiliation(s)
- X F Dong
- Department of Hepatobiliary and Pancreatic Surgery Breast and Thyroid Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - J T Zhong
- Department of Hepatobiliary Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - Y Y Chen
- Department of Hepatobiliary and Pancreatic Surgery Breast and Thyroid Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - T Q Liu
- Department of Hepatobiliary and Pancreatic Surgery Breast and Thyroid Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - J R Yang
- Department of Hepatobiliary and Pancreatic Surgery Breast and Thyroid Surgery, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
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Abstract
This paper summarizes the changes in the policy associated with schistosmiasis control in the new era, analyzes the background of Health China Strategy and its association with the current schistosomiasis control program in China, describes several schistosomiasis control models and proposes some suggestions responding to the challenges in current schistosomiasis control program of China, so as to provide insights into the development of the effective control strategy for schistosomiasis.
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Affiliation(s)
- J R Yang
- Medical School of Wuhan University of Science and Technology, Wuhan 430065, China
| | - M X Xu
- Wuhan Center for Disease Control and Prevention, Hubei Province, China
| | - X D Tan
- Wuhan University School of Health Sciences, China
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11
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Affiliation(s)
- J R Yang
- Department of Hematology, General Hospital, Tianjin Medical University, Tianjin 300052, China
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Liu L, Chen H, Liu M, Yang JR, Xiao P, Wilkinson DM, Yang J. Response of the eukaryotic plankton community to the cyanobacterial biomass cycle over 6 years in two subtropical reservoirs. ISME J 2019; 13:2196-2208. [PMID: 31053831 PMCID: PMC6776060 DOI: 10.1038/s41396-019-0417-9] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Revised: 02/14/2019] [Accepted: 04/10/2019] [Indexed: 12/13/2022]
Abstract
Although it is widely recognized that cyanobacterial blooms have substantial influence on the plankton community in general, their correlations with the whole community of eukaryotic plankton at longer time scales remain largely unknown. Here, we investigated the temporal dynamics of eukaryotic plankton communities in two subtropical reservoirs over a 6-year period (2010–2015) following one cyanobacterial biomass cycle—the cyanobacterial bloom (middle 2010), cyanobacteria decrease (late 2010–early 2011), non-bloom (2011–2014), cyanobacteria increase, and second bloom (late 2014–2015). The eukaryotic community succession that strongly correlated with this cyanobacterial biomass cycle was divided into four periods, and each period had distinct characteristics in cyanobacterial biomass and environments in both reservoirs. Integrated co-occurrence networks of eukaryotic plankton based on the whole study period revealed that the cyanobacterial biomass had remarkably high network centralities, and the eukaryotic OTUs that had stronger correlations with the cyanobacterial biomass exhibited higher centralities. The integrated networks were also modularly responded to different eukaryotic succession periods, and therefore correlated with the cyanobacterial biomass cycle. Moreover, sub-networks based on the different eukaryotic succession periods indicated that the eukaryotic co-occurrence patterns were not constant but varied largely associating with the cyanobacterial biomass. Based on these long-term observations, our results reveal that the cyanobacterial biomass cycle created distinct niches between persistent bloom, non-bloom, decrease and increase of cyanobacteria, and therefore associated with distinct eukaryotic plankton patterns. Our results have important implications for understanding how complex aquatic plankton communities respond to cyanobacterial blooms under the changing environments.
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Affiliation(s)
- Lemian Liu
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China.,Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, 350108, Fuzhou, China
| | - Huihuang Chen
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China
| | - Min Liu
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Jun R Yang
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China
| | - Peng Xiao
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China
| | - David M Wilkinson
- School of Life Sciences, University of Lincoln, Lincoln, LN6 7TS, UK
| | - Jun Yang
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China.
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13
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Liu M, Liu L, Chen H, Yu Z, Yang JR, Xue Y, Huang B, Yang J. Community dynamics of free-living and particle-attached bacteria following a reservoir Microcystis bloom. Sci Total Environ 2019; 660:501-511. [PMID: 30640117 DOI: 10.1016/j.scitotenv.2018.12.414] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/27/2018] [Accepted: 12/27/2018] [Indexed: 06/09/2023]
Abstract
The composition of microbial communities can vary at the microspatial scale between free-living (FL) and particle-attached (PA) niches. However, it remains unclear how FL and PA bacterial communities respond to cyanobacterial blooms across water depths. Here, we examined the community dynamics of the FL (0.2-3 μm) and PA (>3 μm) bacterioplankton based on 16S rRNA gene high-throughput sequencing in a subtropical stratified reservoir under Microcystis aeruginosa bloom and non-bloom conditions. Both FL and PA bacterioplankton communities showed different responses in alpha- and beta-diversities to the bloom, suggesting the idea that the responses of bacterial community could depend on lifestyle. Specifically, abundant PA subcommunities showed a greater variation between bloom and non-bloom groups than abundant FL ones. In contrast, rare FL subcommunities exhibited a stronger response to water depth than rare PA ones. Furthermore, the rare taxa exhibited a preference for PA status, shaped and stimulated by the M. aeruginosa bloom. Our analyses also showed that PA bacterial communities were generally more diverse and appeared to be more responsive to routinely measured environmental variables than FL bacteria. Microcystis blooms had a facilitative influence on specific bacteria by mediating the transitions from free-living to particle-attached lifestyles. Altogether, these findings highlight the importance of bacterial lifestyle and abundance in understanding the dynamics of microbial community in cyanobacterial bloom aquatic ecosystem.
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Affiliation(s)
- Min Liu
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Lemian Liu
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Technical Innovation Service Platform for High Value and High Quality Utilization of Marine Organism, Fuzhou University, Fuzhou 350108, China
| | - Huihuang Chen
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Zheng Yu
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Department of Chemical Engineering, University of Washington, Seattle, WA 98105, USA
| | - Jun R Yang
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Engineering Research Center of Ecology and Agricultural Use of Wetland, College of Agriculture, Yangtze University, Jingzhou 434025, China
| | - Yuanyuan Xue
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China; College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Bangqin Huang
- College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
| | - Jun Yang
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
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14
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Isabwe A, Yang JR, Wang Y, Liu L, Chen H, Yang J. Community assembly processes underlying phytoplankton and bacterioplankton across a hydrologic change in a human-impacted river. Sci Total Environ 2018; 630:658-667. [PMID: 29494974 DOI: 10.1016/j.scitotenv.2018.02.210] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [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: 09/10/2017] [Revised: 01/28/2018] [Accepted: 02/17/2018] [Indexed: 05/20/2023]
Abstract
Although the influence of microbial community assembly processes on aquatic ecosystem function and biodiversity is well known, the processes that govern planktonic communities in human-impacted rivers remain largely unstudied. Here, we used multivariate statistics and a null model approach to test the hypothesis that environmental conditions and obstructed dispersal opportunities, dictate a deterministic community assembly for phytoplankton and bacterioplankton across contrasting hydrographic conditions in a subtropical mid-sized river (Jiulong River, southeast China). Variation partitioning analysis showed that the explanatory power of local environmental variables was larger than that of the spatial variables for both plankton communities during the dry season. During the wet season, phytoplankton community variation was mainly explained by local environmental variables, whereas the variance in bacterioplankton was explained by both environmental and spatial predictors. The null model based on Raup-Crick coefficients for both planktonic groups suggested little evidences of the stochastic processes involving dispersal and random distribution. Our results showed that hydrological change and landscape structure act together to cause divergence in communities along the river channel, thereby dictating a deterministic assembly and that selection exceeds dispersal limitation during the dry season. Therefore, to protect the ecological integrity of human-impacted rivers, watershed managers should not only consider local environmental conditions but also dispersal routes to account for the effect of regional species pool on local communities.
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Affiliation(s)
- Alain Isabwe
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, PR China; University of Chinese Academy of Sciences, 100049 Beijing, PR China
| | - Jun R Yang
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, PR China; University of Chinese Academy of Sciences, 100049 Beijing, PR China
| | - Yongming Wang
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, PR China
| | - Lemian Liu
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, PR China
| | - Huihuang Chen
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, PR China
| | - Jun Yang
- Aquatic EcoHealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021 Xiamen, PR China.
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15
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Xue Y, Yu Z, Chen H, Yang JR, Liu M, Liu L, Huang B, Yang J. Cyanobacterial bloom significantly boosts hypolimnelic anammox bacterial abundance in a subtropical stratified reservoir. FEMS Microbiol Ecol 2017; 93:4111147. [DOI: 10.1093/femsec/fix118] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 09/09/2017] [Indexed: 11/14/2022] Open
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16
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Yang JR, Lv H, Isabwe A, Liu L, Yu X, Chen H, Yang J. Disturbance-induced phytoplankton regime shifts and recovery of cyanobacteria dominance in two subtropical reservoirs. Water Res 2017; 120:52-63. [PMID: 28478295 DOI: 10.1016/j.watres.2017.04.062] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [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: 10/23/2016] [Revised: 04/19/2017] [Accepted: 04/25/2017] [Indexed: 06/07/2023]
Abstract
Many countries in the world still suffer from high toxic cyanobacterial blooms in inland waters used for human consumption. Regional climate change and human activities within watersheds exert a complex and diverse influence on aquatic ecosystem structure and function across space and time. However, the degree to which these factors may contribute to the long-term dynamics of plankton communities is still not well understood. Here, we explore the impacts of multiple disturbance events (e.g. human-resettlement, temperature change, rainfall, water level fluctuations), including six combined disturbances, on phytoplankton and cyanobacteria in two subtropical reservoirs over six years. Our data showed that combined environmental disturbances triggered two apparent and abrupt switches between cyanobacteria-dominated state and non-cyanobacterial taxa-dominated state. In late 2010, the combined effect of human-resettlement (emigration) and natural disturbances (e.g. cooling, rainfall, water level fluctuations) lead to a 60-90% decrease in cyanobacteria biomass accompanied by the disappearance of cyanobacterial blooms, in tandem with an abrupt and persistent shift in phytoplankton community. After summer 2014, however, combined weather and hydrological disturbances (e.g. warming, rainfall, water level fluctuations) occurred leading to an abrupt and marked increase of cyanobacteria biomass, associated with a return to cyanobacteria dominance. These changes in phytoplankton community were strongly related to the nutrient concentrations and water level fluctuations, as well as water temperature and rainfall. As both extreme weather events and human disturbances are predicted to become more frequent and severe during the twenty-first century, prudent sustainable management will require consideration of the background limnologic conditions and the frequency of disturbance events when assessing the potential impacts on reservoir biodiversity and ecosystem functioning and services.
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Affiliation(s)
- Jun R Yang
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China; University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Hong Lv
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China
| | - Alain Isabwe
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China; University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Lemian Liu
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China
| | - Xiaoqing Yu
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China
| | - Huihuang Chen
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China
| | - Jun Yang
- Aquatic Ecohealth Group, Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, 361021, Xiamen, China.
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17
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Lin Y, Wang ZN, Ma CC, Liu CK, Yang JR, Shen ZW, Wu RH. [Proton nuclear magnetic resonance spectroscopy recognition of metabolic patterns in fecal extracts for early diagnosis of colorectal cancer]. Zhonghua Yu Fang Yi Xue Za Zhi 2017; 50:788-793. [PMID: 27655598 DOI: 10.3760/cma.j.issn.0253-9624.2016.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To characterize the metabolic " fingerprint" of fecal extracts for diagnosis of early-stage colorectal cancer(CRC)using proton nuclear magnetic resonance spectroscopy(1H-NMR)-based metabolomics coupled with pattern recognition. Methods: From January 2014 to December 2014, we collected fecal samples at the Second Affiliated Hospital of Shantou University Medical College, from 25 patients with colorectal adenomas(CR-Ad), 20 with stage Ⅰ/Ⅱ CRC, and 32 healthy controls(HCs). The patients were diagnosed by histopathology. No subjects had any complicating diseases. HCs showed no abnormalities from blood tests, endoscopic examination, diagnostic imaging, and/or medical interviews. We excluded participants who used antibiotics, NSAIDS, statins, or probiotics within two months of study participation, and any patients who underwent chemotherapy or radiation treatments prior to surgery. We used orthogonal partial least-squares-discriminant analysis(OPLS-DA)for pattern recognition(dimension reduction)on 1H-NMR processed data(1H frequency of 400.13 MHz), to find metabolic differences among CR-Ad, carcinoma and HC fecal samples; and receiver operating characteristic(ROC)analysis to determine the diagnostic value of the fecal metabolic biomarkers. Results: Fecal samples were collected from 20 patients with Stage Ⅰ/Ⅱ CRC(11 M, 9 F, median age(52±13)years), 25 with CR-Ad(14 M, 11 F, median age(53 ± 11)years)and 32 HCs(15 M, 17 F, median age(53 ± 14)years). OPLS-DA clearly distinguished CR-Ad and stage Ⅰ/Ⅱ CRC from HC samples, based on their metabolomic profiles. Relative signal intensities in HCs were significantly lower than in the cancer patients for butyrate(HC: 23.0±6.0; CR-Ad: 18.0±5.0; CRC: 14.0±6.0; Z=-2.07, P=0.008), acetate(HC: 45.0±11.0; CR-Ad: 31.0±11.0; CRC: 24.0±8.0; Z=- 2.32, P=0.011), propionate(HC: 26.0 ± 7.0; CR-Ad: 22.0 ± 6.0; CRC: 19.0 ± 5.0; Z=- 2.43, P=0.032), glucose(HC: 37.0±7.0; CR-Ad: 31.0±7.0; CRC: 26.0±8.0; Z=-2.07, P=0.044)and glutamine(HC: 4.5±2.0; CR-Ad: 4.9 ± 1.0; CRC: 5.4 ± 1.0; Z=2.21, P=0.044). However, relative signal intensities in HCs were significantly higher than in patients for lactate(HC: 4.8±1.0; CR-Ad: 6.9±2.0; CRC: 4.8± 1.0; Z=2.02, P= 0.038), glutamate(HC: 3.2 ± 2.0; CR-Ad: 4.9 ± 1.0; CRC: 3.2 ± 2.0; Z=2.21, P=0.044)and succinate(HC: 12.0±2.0; CR-Ad: 15.0±3.0; CRC: 12.0± 2.0; Z=2.25, P=0.011). Among the potential biomarkers, acetate at 1.92 ppm, and succinate at 2.41 ppm displayed relatively high area under ROC, with sensitivity and specificity both >90%, to distinguish early-stage CRC patients from HCs. Conclusion: Fecal metabolic profiles distinguish of HCs from patients with CRC patients, even in the early stages(stage Ⅰ/Ⅱ), highlighting the potential of NMR-based fecal metabolomic fingerprinting as tools for early CRC diagnosis.
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Affiliation(s)
- Y Lin
- Department of Medical Imaging, the Second Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
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18
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Abstract
OBJECTIVES In recent years, Chinese hospital settings are under violent threats. The exact status of quality of life of Chinese doctors under these disastrous situations remains obscure. The aim of this study was to assess the quality of life of Chinese urologists and analyse its potential affecting factors. DESIGN Cross-sectional survey. SETTING Beijing, China. PARTICIPANTS Overall, 1000 participants from more than 30 areas of China, who participated in the 20th National Urology Conference in Beijing in 2013, were surveyed. The brief version of the World Health Organization Quality of Life (WHOQOL-BREF) Chinese version was used to assess the quality of life among these urologists. The relationship between quality of life and the affecting factors was analysed. RESULTS Of the 1000 questionnaires, 856 were completed and returned, and 708 questionnaires were valid for analysis. Approximately 46% of the respondents came from provincial capitals, 54.2% of them felt stress from medical environment, while 76.0% felt stress from research work, and 85.3% from promotion. Cronbach's α coefficient of the instrument was 0.825, Kaiser-Meyer-Olkin measure was 0.841, and P value of Bartlett's sphericity was <0.001. The results of binary logistic regression indicated gender, work years, and medical environment as potential affecting factors of quality of life only influenced one domain. In contrast, research work and promotion influenced three domains of the WHOQOL-BREF. CONCLUSIONS The study indicated that the WHOQOL-BREF may be a reliable and valid tool to assess quality of life of Chinese urologists. In China it is true that the deteriorative medical environment negatively affects medical practice according to previous studies, and policies are recommended to improve the situation. Nevertheless, we should not be too pessimistic about it, as in today's context research work and promotion may be the most extensive and significant affecting factors on doctors' quality of life.
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Affiliation(s)
- Y B Wei
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China.,Department of Urology, Fujian Provincial Hospital, The Teaching Hospital of Fujian Medical University, Fuzhou 350001, China
| | - Z Yin
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Y L Gao
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - B Yan
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Z Wang
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - J R Yang
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
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Yin Z, Wei YB, Liang BL, Zhou KQ, Gao YL, Yan B, Wang Z, Yang JR. Initial experiences with laparoscopy and flexible ureteroscopy combination pyeloplasty in management of ectopic pelvic kidney with stone and ureter-pelvic junction obstruction. Urolithiasis 2015; 43:255-60. [PMID: 25666341 DOI: 10.1007/s00240-015-0753-9] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 01/07/2015] [Indexed: 10/24/2022]
Abstract
To demonstrate the safety and efficacy of combine laparoscopy and flexible ureteroscopy to treat ectopic pelvic kidneys with ureteropelvic junction obstruction (UPJO) and stones. 16 patients of ectopic pelvic kidneys with ureteropelvic junction obstruction and stones were treated with laparoscopy and flexible ureteroscopy (FURS). The operative time, required dose of tramadol, visual analog pain scale (VAPS), postoperative day, stone-free rates (SFRs), perioperative complications, and serum creatinine were evaluated. The SFRs were evaluated with noncontrasted renal computed tomography (CT). Intravenous pyelography (IVP) and CT scan were used to evaluate the UPJO. Stone-free status was defined as absence of stone fragments in kidney or the size of that is less than 3 mm. Operation time from 118 to 225 min, average time (171 ± 28) min; lithotomy time from 16 to 45 min, average time (32 ± 6) min. Average tramadol required at the first day postoperation was (118 ± 49.6) mg; at the second day was (78 ± 24.8) mg. VAPS score at 24 h (5.0 ± 0.7), VAPS score at 48 h (2.5 ± 0.8). Postoperative day (3.9 ± 0.6) days. Stone-free rate was 100%. Average serum creatinine was (88.7 ± 24.3) mol/L before surgery and (92.8 ± 21.6) mol/L after surgery. No major complication. No stone and obstruction recurrence in the follow-up of average 29.3 months. Combined FUR and LC is a good option for patient of ectopic pelvic kidney with renal stone and UPJO. From our initial experience, the SFRs and the effect of pyeloplasty are satisfactory and without major complication, the operative time is acceptable.
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Affiliation(s)
- Zhuo Yin
- Department of Urology, Second Xiangya Hospital of Central South University, 139 Renmin Road, Changsha, Hunan, China,
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20
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Yin Z, Yang JR, Wei YS, Liang BL, Wei YB, Zhou KQ, Wang Z, Yan B, Gao YL. Ischemia-reperfusion injury in an aortic dissection patient. Am J Emerg Med 2014; 33:987.e5-6. [PMID: 25667158 DOI: 10.1016/j.ajem.2014.12.045] [Citation(s) in RCA: 3] [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] [Received: 12/09/2014] [Revised: 12/18/2014] [Accepted: 12/21/2014] [Indexed: 10/24/2022] Open
Abstract
Aortic dissection is a life-threatening emergency. Well-established risk factors include systemic hypertension, hereditary connective tissue diseases (Marfan syndrome and Ehlers-Danlos syndrome), coarctation of the aorta, bicuspid aortic valve, aortitis, and arch hypoplasia. Ischemia of the viscera, the kidneys, the spinal cord, or the lower extremities due to malperfusion constitutes life-threatening complications that have to be considered in the treatment strategy.We report a rare case of symptomatic ischemia of the lower extremities due to aortic dissection. This case demonstrates that the treating physician needs to be vigilant for ischemia reperfusion injuries such as osteofascial compartment syndrome and acute renal failure in aortic dissection.
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Affiliation(s)
- Zhuo Yin
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
| | - J R Yang
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Y S Wei
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - B L Liang
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Y B Wei
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - K Q Zhou
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Z Wang
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - B Yan
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Y L Gao
- Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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Yin Z, Yang JR, Wei YB, Zhou KQ, Yan B. A new subtype of crossed fused ectopia of the kidneys. Urology 2014; 84:e27. [PMID: 25440991 DOI: 10.1016/j.urology.2014.08.011] [Citation(s) in RCA: 3] [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] [Received: 07/07/2014] [Revised: 08/11/2014] [Accepted: 08/18/2014] [Indexed: 10/24/2022]
Abstract
Crossed fused renal ectopia is a rare congenital anomaly; here, we report a new subtype of crossed fused renal ectopia associated with the retroiliac megaureter and thoracic scoliosis deformity. It is beyond the traditional classification of crossed fused renal ectopia. There are 2 kidneys in the left and hydronephrosis of the upper kidney, the right kidney crossed over and fused with the lower kidney of the left. It is never seen in previous reports. Recurrent infection was cured by resecting the hydronephrosis of the upper kidney and retroiliac megaureter.
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Affiliation(s)
- Zhuo Yin
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - J R Yang
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
| | - Y B Wei
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - K Q Zhou
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - B Yan
- Department of Urology, Second Xiangya Hospital of Central South University, Changsha, Hunan, China
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22
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Guo Q, Nan XX, Yang JR, Yi L, Liang BL, Wei YB, Zhu N, Hu SB, Zhang H, Luo Y, Xu YF. Triptolide inhibits the multidrug resistance in prostate cancer cells via the downregulation of MDR1 expression. Neoplasma 2013; 60:598-604. [PMID: 23906293 DOI: 10.4149/neo_2013_077] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Triptolide (TPL) is a diterpenoid triepoxide derived from the Chinese herb Tripterygium wilfordii and possesses anti-tumor activity against a range of cancer cells. However, the effect of TPL on prostate cancer cells and its potential to overcome multidrug resistance (MDR) have not been explored. Therefore, in this study we used prostate cancer cell line DU145 as the experimental model and established DU145/ADM cell line resistant to adriamycin (ADM). Our results showed that TPL inhibited the proliferation and induced the cell cycle arrest and apoptosis of DU145 cells in a dose and time dependent manner. TPL decreased the levels of Cyclin D1 and anti-apoptotic protein Bcl-2, and increased the levels of pro-apoptotic proteins Fas and Bax. Furthermore, we found that TPL restored the sensitivity DU145/ADM cells to ADM in a dose dependent manner, and this was accompanied by the inhibition of MDR1 expression at both mRNA and protein levels. Taken together, these results provide strong evidence that TPL overcomes MDR in prostate cancer cells by downregulating MDR1 expression, and suggest that TPL is a promising agent for prostate cancer therapy, especially for chemoresistant prostate cancer.
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MESH Headings
- ATP Binding Cassette Transporter, Subfamily B
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Antineoplastic Agents, Alkylating/pharmacology
- Apoptosis/drug effects
- Blotting, Western
- Cell Cycle/drug effects
- Cell Proliferation/drug effects
- Diterpenes/pharmacology
- Down-Regulation
- Drug Resistance, Multiple/drug effects
- Epoxy Compounds/pharmacology
- Humans
- Male
- Phenanthrenes/pharmacology
- Prostatic Neoplasms/drug therapy
- Prostatic Neoplasms/metabolism
- Prostatic Neoplasms/pathology
- RNA, Messenger/genetics
- Real-Time Polymerase Chain Reaction
- Reverse Transcriptase Polymerase Chain Reaction
- Tumor Cells, Cultured
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Abstract
Chinese redbud (Cercis chinensis Bunge), a member of the Fabaceae, is an important ornamental plant native to China with reported desirable medicinal effects, including stimulating blood circulation, detumescence, and detoxification (1). In October 2011, wilt symptoms of gradual leaf yellowing, wilting, scorching (marginal browning), and twig dieback were observed on plants in Yangling, Shaanxi, China. The incidence of diseased plants was about 20% in two main areas (about 20 ha in Zijingshan Park in Zhengzhou, Henan Province; and about 3,000 ha in Taiping National Forest Park in Xi'an, Shaanxi Province). Wilted leaves of diseased plant senesced and died, but defoliation was not observed. Brown discoloration was observed in vascular tissues of petioles, twigs, and stems of diseased plants, sometimes in a ring pattern. The symptoms were often restricted to the lower part of the tree or a few branches. To identify the causal agent, six twigs (each approximately 50 mm in diameter and 10 cm long) sampled from an infected tree in Yangling were rinsed in running water, surface-sterilized with 75% ethanol for 2 min, rinsed in sterilized water three times, dried, cut into 1 cm long segments, and the segments put onto potato dextrose agar (PDA) medium. A fungal isolate was recovered from diseased vascular tissues of each sample when cultured on PDA in the dark at 25°C. After 5 days, colonies changed from white to black as a result of production of microsclerotia. Microscopic observation revealed that conidiophores were hyaline and verticillate, with three to four phialides at each node. Conidia were ellipsoidal, hyaline, single-celled, and 2.5 to 7.5 × 1.25 to 4.5 μm. On the basis of these morphological characteristics, the fungus was identified as Verticillium dahliae (3). To prove Koch's postulates, the roots of 10 healthy, 1-year-old C. chinensis plants were each irrigated in a greenhouse with 50 ml of a conidial suspension (1.0 × 107 spores/ml) of an isolate recovered from an infected plant (2); five control plants were inoculated similarly with sterilized water. Fifteen days after inoculation, the same wilt symptoms observed on the original plants had developed on 9 of the 10 inoculated plants, whereas the control plants remained healthy. The pathogen was recovered 15 days after inoculation by isolating from petiole and stem tissues of symptomatic plants, but was not isolated from the control plants. The internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2) of the nuclear ribosomal DNA was PCR-amplified with primers ITS1 and ITS4 (4), and sequenced. BLAST analysis of the ITS sequence (GenBank Accession No. AB735536) showed 100% homology with that of an isolate of V. dahliae (FJ572050). To our knowledge, this is the first report of Verticillium wilt on C. chinensis in China. References: (1) Y. Li et al. J. Integr. Plant Biol. 47:1021, 2005. (2) H. A. Melouk and C. E. Horner. Phytopathology 65:767, 1975. (3) G. F. Pegg and B. L. Brady. Verticillium Wilts, CABI Publishing, Oxford, UK, 2002. (4) T. J. White et al. PCR Protocols: A Guide to Methods and Applications. M. A. Innis et al., eds. Academic Press, San Diego, CA, 1990.
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Affiliation(s)
- W J Lu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Y J Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - H Q Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - W J Shang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - J R Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - X P Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
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Abstract
Ketamine is a relatively new recreational drug used by youngsters in recent decades. Its toxic effects on the genitourinary system were first reported in 2007, and now attract extensive attention from urologists, pharmacologists, and toxicologists all over the world. As many front-line health professionals and medical social workers are still unaware of this new clinical entity and an increasing number of the drug users seek help for urological symptoms, this mini-review aimed to summarise the clinical features and possible mechanisms of ketamine-induced genitourinary toxicity. By raising public awareness of these toxic effects, the authors hope that the contents of this review will be widely disseminated not only to medical professionals, but also to relevant government departments and the general public.
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Affiliation(s)
- Y B Wei
- Department of Urology, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha 410011, Hunan, China
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Lo YC, Chen WC, Huang WT, Lin YC, Liu MC, Kuo HW, Chuang JH, Yang JR, Liu MT, Wu HS, Yang CH, Chou JH, Chang FY. Surveillance of avian influenza A(H7N9) virus infection in humans and detection of the first imported human case in Taiwan, 3 April to 10 May 2013. Euro Surveill 2013. [DOI: 10.2807/ese.18.20.20479-en] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
On 3 April 2013, suspected and confirmed cases of influenza A(H7N9) virus infection became notifiable in the primary care sector in Taiwan, and detection of the virus became part of the surveillance of severe community-acquired pneumonia. On 24 April, the first imported case, reported through both surveillance systems, was confirmed in a man returning from China by sequencing from endotracheal aspirates after two negative throat swabs. Three of 139 contacts were ill and tested influenza A(H7N9)-negative.
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Affiliation(s)
- Y C Lo
- Centers for Disease Control, Taipei, Taiwan
| | - W C Chen
- Centers for Disease Control, Taipei, Taiwan
| | - W T Huang
- Centers for Disease Control, Taipei, Taiwan
| | - Y C Lin
- Centers for Disease Control, Taipei, Taiwan
| | - M C Liu
- Centers for Disease Control, Taipei, Taiwan
| | - H W Kuo
- Centers for Disease Control, Taipei, Taiwan
| | - J H Chuang
- Centers for Disease Control, Taipei, Taiwan
| | - J R Yang
- Centers for Disease Control, Taipei, Taiwan
| | - M T Liu
- Centers for Disease Control, Taipei, Taiwan
| | - H S Wu
- Centers for Disease Control, Taipei, Taiwan
| | - C H Yang
- Centers for Disease Control, Taipei, Taiwan
| | - J H Chou
- Centers for Disease Control, Taipei, Taiwan
| | - F Y Chang
- Centers for Disease Control, Taipei, Taiwan
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Lo YC, Chen WC, Huang WT, Lin YC, Liu MC, Kuo HW, Chuang JH, Yang JR, Liu MT, Wu HS, Yang CH, Chou JH, Chang FY. Surveillance of avian influenza A(H7N9) virus infection in humans and detection of the first imported human case in Taiwan, 3 April to 10 May 2013. Euro Surveill 2013; 18:20479. [PMID: 23725865] [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: 06/02/2023] Open
Abstract
On 3 April 2013, suspected and confirmed cases of influenza A(H7N9) virus infection became notifiable in the primary care sector in Taiwan, and detection of the virus became part of the surveillance of severe community-acquired pneumonia. On 24 April, the first imported case, reported through both surveillance systems, was confirmed in a man returning from China by sequencing from endotracheal aspirates after two negative throat swabs. Three of 139 contacts were ill and tested influenza A(H7N9)-negative.
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Affiliation(s)
- Y C Lo
- Centers for Disease Control, Taipei, Taiwan
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27
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Abstract
Alfalfa (Medicago sativa Linn.), widely grown throughout the world, is an important perennial forage crop. It is high in protein and digestible fiber and is an excellent source of several vitamins (A, D, E, and K) and minerals for beef cattle, horses, sheep, goats, and even humans (2). Wilt symptoms on alfalfa were observed during a disease survey in Yangling, Shaanxi, China in 2009. Symptoms included discoloration, shortened internode, and plant death. However, the vascular tissue of diseased alfalfa plants did not exhibit discoloration and typical "V" symptoms of Verticillium albo-atrum infection. Eleven fungal isolates were obtained from diseased alfalfa plants in Yangling by a tissue isolation method (1). Isolates were cultured on Czapek Dox Agar (CDA; pH 7.2) slants at 22 ± 1°C in darkness. Colonies on CDA plates were whitish and cream-white when viewed from the underside, later becoming dark gray due to the formation of gray or dark brown chlamydospores in single or in short chains. DNA was extracted from each isolate and the internal transcribed spacer (ITS) region of the nuclear ribosomal DNA (rDNA) was amplified and sequenced using primers ITS-1F and ITS4. The 11 isolates were divided into five groups based on their in vitro morphological characters. A single isolate from each of the five groups was chosen for ITS sequencing. All five isolates had the same ITS sequence (GenBank Accession No. AB551216). On the basis of the ITS sequence and morphology (4), these isolates were identified as V. nigrescens Pethyhr. (recently renamed as Gibellulopsis nigrescens). Five representative isolates were used to fulfill Koch's postulates. Alfalfa seeds (cv. Cossack) were surface sterilized with 75% ethanol for 5 min, allowed to dry, and planted into cow dung compost that had been autoclaved at 160°C for 2 h. Plants were cultivated under controlled greenhouse conditions at 23 to 25°C with a photoperiod of 14 h. Inoculum was prepared by comminuting 15-day-old cultures and sterile deionized water into a suspension of mycelial fragments and conidia (105 to 106 CFU/ml) in a blender. Seedlings (four-leaf stage) were inoculated by immersing roots in the inoculum suspension for 60 min (3). Each isolate was inoculated onto 30 seedlings, six in each pot; another 30 seedlings were soaked with sterile deionized water for 60 min as a control. After 20 days in the greenhouse, all inoculated plants exhibited wilt symptoms similar to the original wilt symptoms observed on diseased alfalfa plants. In contrast, none of the control plants showed wilt symptoms. The pathogen was reisolated from all diseased plants and confirmed to the original ones. To our knowledge, this is the first report of V. nigrescens infecting M. sativa in China, indicating V. nigrescens as one possible important pathogen of alfalfa. References: (1) O. D. Dhingra and J. B. Sinclair. Basic Plant Pathology Methods. CRC Press, Boca Raton, FL, 1995. (2) D. Jasjeet et al. J. Adv. Sci. Res. 2:50, 2011. (3) H. A. Melouk and C. E. Horner. Phytopathology 64:1267, 1974. (4) R. Zare et al. Nova Hedwigia 85:463, 2007.
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Affiliation(s)
- X P Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - M X Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - D F Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - J R Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China
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Wei YB, Yang JR. Moxifloxacin relieves the persistent symptoms of lower urinary tract after cessation of ketamine abuse. Hong Kong Med J 2011; 17:515. [PMID: 22147328] [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: 05/31/2023] Open
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Yang JR, Li WC, Tsai HL, Hsu JT, Shiojiri M. Electron microscopy investigations of V defects in multiple InGaN/GaN quantum wells and InGaN quantum dots. J Microsc 2010; 237:275-81. [PMID: 20500380 DOI: 10.1111/j.1365-2818.2009.03242.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mechanism of high emission of InGaN-based multiple quantum wells, which exhibit exceptionally high light emission efficiency despite their high defect density, is still not fully understood. Here, we deal with this problem, showing the details of structure and formation of V defects in the multiple quantum wells and reviewing interpretations proposed so far. Then, we show a structural investigation of three-dimensional high-density quantum dots, fabricated instead of quantum wells in the active layer. The shape and size of the InGaN quantum dots and the SiN(x) masks for the growth of the dots have been revealed using high-angle annular dark field scanning transmission electron microscopy, energy dispersive X-ray spectroscopy nanoanalysis and high-resolution transmission electron microscopy.
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Affiliation(s)
- J R Yang
- Institute of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
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Lin YF, Chang SJ, Yang JR, Lee YP, Hsu AL. Effects of supplemental vitamin E during the mature period on the reproduction performance of Taiwan Native Chicken cockerels. Br Poult Sci 2005; 46:366-73. [PMID: 16050192 DOI: 10.1080/00071660500098186] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
One-day-old Taiwan native male chicks were fed with maize-soybean rearing diets without supplemental vitamin E to 23 weeks of age. From 23 to 52 weeks of age, the cockerels (n = 90) were assigned at random to 5 dietary treatments and fed with maize-soybean diets supplemented with 0, 20, 40, 80 and 160 mg/kg of vitamin E (dl-alpha-tocopherol acetate). Pullets (225) of the same age were fed with standard diets throughout. They were artificially inseminated with one dose of 0.04 ml/bird intact and 5-fold diluted pooled semen at 31 to 43 weeks of age and at 49 weeks of age, respectively. The criteria evaluated included: semen quality, fertility and maximum and effective duration of fertility, blood characteristics, body and testes weight. Supplemental vitamin E did not affect cockerels' effective duration of fertility and percentage of fertility. However, when pullets were inseminated with diluted semen, supplementing 160 mg/kg vitamin E increased the maximum duration of fertility at 49 weeks of age. Cockerels receiving 40 to 160mg/kg supplements had higher sperm viability and motility after 39 weeks of age and those fed 80 mg/kg had higher sperm concentration at 39 weeks of age. Cockerels receiving supplements of more than 40 mg/kg vitamin E had higher body weight gain. Plasma cholesterol and testosterone were not affected by supplemental vitamin E. However, plasma luteinising hormone (LH) concentration was lower in cockerels fed 160 mg/kg. Lack of supplemental vitamin E over 39 weeks was associated with lower semen quality but did not reduce the proportion of fertile eggs laid by inseminated hens, perhaps because the insemination dose compensated for low sperm quality. We found that the maximum duration of fertility might be improved by supplementing 160 mg/kg vitamin E at 49 weeks of age.
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Affiliation(s)
- Y F Lin
- The Livestock Research Institute, Council of Agriculture, Tainan, Taiwan
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31
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Wu LS, Sheu SY, Huang CC, Chiu CH, Huang JC, Yang JR, Lian WX, Lai CH, Chen YP, Lin JH. Ginseng flowers stimulate progesterone production from bovine luteal cells. Am J Chin Med 2001; 28:371-7. [PMID: 11154050 DOI: 10.1142/s0192415x0000043x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Our previous report first showed evidence that polysaccharides isolated from ginseng leaves obtained from Jilin, China possess luteotropic activities. In this study, we made further investigations on the root and flowers of Korean ginseng by means of the same bioassay system described briefly as follows. Frozen-thawed bovine luteal cells (1 x 10(5) cells/ml/well) in M199 were incubated in 24-well culture plates at 37 degrees C in a 5 % CO2 incubator. Ten microl of tested drugs with 1, 10 and 100 microg/ml were added into each well. After 4- and 24-hr incubation, the media were harvested and assayed for progesterone by an enzyme immunoassay. The production of progesterone from cells is the indicator for evaluating the action of tested drugs. Results showed that hot water extracts ofginseng flowers (GF-1) with 10 to 100 microg/ml significantly increased progesterone production, whereas those from ginseng root (GR-1) could not. Crude polysaccharides (GF-2) isolated from GF-1 is the active component and the small molecules (mw < 10,000 dalton) are excluded, indicating that the ginseng root has no luteotropic activities, but the polysaccharides of ginseng flowers have.
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Affiliation(s)
- L S Wu
- Department of Animal Science, National Taiwan University, Taipei
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32
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Chiu MJ, Yang JR, Huang KM, Chen JH. Functional MRI of the activated human visual cortex. J Formos Med Assoc 1996; 95:396-8. [PMID: 8688706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
We explored the possibility of performing functional magnetic resonance imaging of visual evoked response in the primary visual cortex with a clinical MRI imager of 1.5 tesla. Gradient echo pulse sequence was chosen to acquire the functional image and binocular flash visual stimulation by light-proof goggles containing light emitting diodes was used as the source of cerebral activation. Data processing was performed utilizing direct subtraction for averaged images, correlation coefficient, statistical parametric mapping and matched filter. Of those methods, correlation coefficient and statistic parametric mapping proved to be the methods of choice in our study.
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Affiliation(s)
- M J Chiu
- Department of Neurology, National Taiwan University Hospital, Taipei, ROC
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33
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Mo ZN, Huang X, Zhang SC, Yang JR. Early and late long-term effects of vasectomy on serum testosterone, dihydrotestosterone, luteinizing hormone and follicle-stimulating hormone levels. J Urol 1995; 154:2065-9. [PMID: 7500459] [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: 01/25/2023]
Abstract
PURPOSE We investigated whether the association between vasectomy and prostate cancer has a hormonal basis. MATERIALS AND METHODS We examined serum testosterone, dihydrotestosterone, luteinizing hormone and follicle-stimulating hormone levels by radioimmunoassay on 91 pairs of men who did and did not undergo vasectomy. RESULTS Men who underwent vasectomy 10 to 19 years previously had higher dihydrotestosterone levels than age matched controls. In men who underwent vasectomy 20 years or more ago testosterone was higher than in corresponding controls. No statistically significant difference in luteinizing hormone and follicle-stimulating hormone levels was noted between the men who had had vasectomy and controls. CONCLUSIONS Our results indirectly support the hypothesis that there is an elevated risk of prostate cancer among men who underwent vasectomy 20 or more years previously.
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Affiliation(s)
- Z N Mo
- Urology Department, Second Affiliated Hospital of Hunan Medical University, Peoples Republic of China
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Yang JR, Chen GX, Li WM. [Effects of composite xueliting on four gastric ulcer models in rats and mice]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1995; 15:416-8. [PMID: 7580064] [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: 01/26/2023]
Abstract
Composite Xueliting (CXLT) was found to be an effective anti-ulcer agent in four experimental models in rats and mice, namely, the stress restraint-induced, histamin-induced, salicylic acid-induced and reserpine-induced ulcers. In above-mentioned models, CXLT (0.214-0.856 g/kg, 1/d x 5, per os) could inhibit gastric ulcer by 40%-63%, 48%-85%, 68%-87% and 27%-65% respectively. Among these, the salicylic acid-induced ulcer was more markedly inhibited. The result suggested that CXLT had the protective function against the gastric ulcer.
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Affiliation(s)
- J R Yang
- Dept. of Pharmacology, Wannan Medical College, Anhui
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Yang JR, Xi T, Wu DM, Rao MR. [Effects of m-nifedipine and nifedipine on hemodynamics in renovascular hypertensive rats]. Zhongguo Yao Li Xue Bao 1994; 15:260-3. [PMID: 7976383] [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: 01/28/2023]
Abstract
In the renovascular hypertensive myocardial hypertrophic rats of prevention and regressive groups, the blood pressure was lowered by m-nifedipine (m-Nif) or nifedipine (Nif) of 20 mg.kg-1.d-1, i.g., for 9 wk vs control (LVH) group (P < 0.01). From the isolated working hearts of prevention and regressive groups, it was found that AP, LVSP, +dp/dtmax, -dp/dtmax, CF, and CI values of m-Nif and Nif groups increased higher than that of LVH group, but LVEDP and T was lower in m-Nif and Nif groups. It was concluded that m-Nif exhibits the similar effects like Nif in prevention and reversion of renovascular hypertensive LVH and improvement of hemodynamics.
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Affiliation(s)
- J R Yang
- Department of Cardiovascular Pharmacology, Nanjing Medical College, China
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