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Zhong T, Chen S, Deng K, Guan J, Zhang J, Lu F, Shichen M, Lv R, Liu Z, Liu Y, Chang P, Liu Z. Magnesium alleviates extracellular histone-induced apoptosis and defective bacterial phagocytosis in macrophages by regulating intracellular calcium signal. Int Immunopharmacol 2024; 132:111870. [PMID: 38547771 DOI: 10.1016/j.intimp.2024.111870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/18/2024] [Accepted: 03/12/2024] [Indexed: 05/01/2024]
Abstract
Extracellular histones have been determined as important mediators of sepsis, which induce excessive inflammatory responses in macrophages and impair innate immunity. Magnesium (Mg2+), one of the essential nutrients of the human body, contributes to the proper regulation of immune function. However, no reports indicate whether extracellular histones affect survival and bacterial phagocytosis in macrophages and whether Mg2+ is protective against histone-induced macrophage damage. Our clinical data revealed a negative correlation between circulating histone and monocyte levels in septic patients, and in vitro experiments confirmed that histones induced mitochondria-associated apoptosis and defective bacterial phagocytosis in macrophages. Interestingly, our clinical data also indicated an association between lower serum Mg2+ levels and reduced monocyte levels in septic patients. Moreover, in vitro experiments demonstrated that Mg2+ attenuated histone-induced apoptosis and defective bacterial phagocytosis in macrophages through the PLC/IP3R/STIM-mediated calcium signaling pathway. Importantly, further animal experiments proved that Mg2+ significantly improved survival and attenuated histone-mediated lung injury and macrophage damage in histone-stimulated mice. Additionally, in a cecal ligation and puncture (CLP) + histone-induced injury mouse model, Mg2+ inhibited histone-mediated apoptosis and defective phagocytosis in macrophages and further reduced bacterial load. Overall, these results suggest that Mg2+ supplementation may be a promising treatment for extracellular histone-mediated macrophage damage in sepsis.
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Affiliation(s)
- Tao Zhong
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Sainan Chen
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ke Deng
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jianbin Guan
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jiaqi Zhang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Furong Lu
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Maoyou Shichen
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ronggui Lv
- Department of Intensive Care Unit, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China
| | - Zhifeng Liu
- Department of Medicine Intensive Care Units, General Hospital of Southern Theatre Command of PLA, Guangzhou, Guangdong, China.
| | - Yong Liu
- Department of Intensive Care Unit, Shenzhen Hospital, Southern Medical University, Shenzhen, Guangdong, China.
| | - Ping Chang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
| | - Zhanguo Liu
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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Chen X, Hou X, Gao J, Yu X, Zeng W, Lv R, Yang X, Liu Y. Ethnic disparities in cardiovascular and renal responses to canagliflozin between Asian and White patients with type 2 diabetes mellitus: A post hoc analysis of the CANVAS Program. Diabetes Obes Metab 2024; 26:878-890. [PMID: 38031821 DOI: 10.1111/dom.15380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/17/2023] [Accepted: 10/25/2023] [Indexed: 12/01/2023]
Abstract
AIM To assess the potential heterogeneity in cardiovascular (CV), renal and safety outcomes of canagliflozin between Whites and Asians, as well as these outcomes in each subgroup. MATERIALS AND METHODS The CANVAS Program enrolled 10 142 patients with type 2 diabetes, comprising 78.34% Whites and 12.66% Asians. CV, renal and safety outcomes were comprehensively analysed using Cox regression models, while intermediate markers were assessed using time-varying mixed-effects models. Racial heterogeneity was evaluated by adding a treatment-race interacion term. RESULTS Canagliflozin showed no significant racial disparities in the majority of the CV, renal and safety outcomes. The heterogeneity (p = .04) was observed on all-cause mortality, with reduced risk in Whites (hazard ratio 0.84; 95% confidence interval 0.71-0.99) and a statistically non-significant increased risk in Asians (hazard ratio 1.64; 95% confidence interval 0.94-2.90). There was a significant racial difference in acute kidney injury (p = .04) and a marginally significant racial heterogeneity for the composite of hospitalization for heart failure and CV death (p = .06) and serious renal-related adverse events (p = .07). CONCLUSION Canagliflozin reduced CV and renal risks similarly in Whites and Asians; however, there was a significant racial discrepancy in all-cause mortality. This distinction may be attributed to the fact that Asian patients exhibited diminished CV protection effects and more renal adverse events with canagliflozin, potentially resulting from the smaller reductions in weight and uric acid. These findings highlight the importance of investigating the impact of race on treatment response to sodium-glucose cotransporter-2 inhibitors and provide more precise treatment strategies.
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Affiliation(s)
- Xi Chen
- Department of Pharmacy, Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Xingyun Hou
- Buddhism and Science Research Lab, Centre of Buddhist Studies, The University of Hong Kong, Hong Kong, China
| | - Junling Gao
- Department of Pharmacy, Shanghai ChangZheng Hospital, Shanghai, China
| | - Xiaxia Yu
- School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen University, Shenzhen, China
| | - Weixian Zeng
- Department of Critical Care Medicine, Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Ronggui Lv
- Department of Critical Care Medicine, Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Xixiao Yang
- Department of Pharmacy, Shenzhen Hospital of Southern Medical University, Shenzhen, China
| | - Yong Liu
- Department of Critical Care Medicine, Shenzhen Hospital of Southern Medical University, Shenzhen, China
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Zhong T, Zhang J, Chen S, Chen S, Deng K, Guan J, Yang J, Lv R, Liu Z, Liu Y, Chang P, Liu Z. MAGNESIUM SULFATE AMELIORATES HISTONE-INDUCED COAGULATION DYSFUNCTION AND LUNG DAMAGE IN MICE. Shock 2024; 61:132-141. [PMID: 37988072 DOI: 10.1097/shk.0000000000002263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
ABSTRACT Introduction: Extracellular histones have been determined as significant mediators of sepsis, which can induce endothelial cell injury and promote coagulation activation, and ultimately contribute to multiorgan failure. Evidence suggests that magnesium sulfate (MgSO 4 ) exerts a potential coagulation-modulating activity; however, whether MgSO 4 ameliorates histone-induced coagulation dysfunction and organ damage remains unclear. Methods: To measure circulating histone levels, blood specimens were collected from septic patients and mice, and the relationship between circulating histone levels, coagulation parameters, and Mg 2+ levels in sepsis was investigated. Furthermore, to explore the possible protective effects of MgSO 4 , we established a histone-induced coagulation model in mice by intravenous histone injection. The survival rate of mice was assessed, and the histopathological damage of the lungs (including endothelial cell injury and coagulation status) was evaluated using various methods, including hematoxylin and eosin staining, immunohistochemistry, immunofluorescence, electron microscopy, and quantitative polymerase chain reaction. Results: The circulating histone levels in septic patients and mice were significantly associated with several coagulation parameters. In septic patients, histone levels correlated negatively with platelet counts and positively with prothrombin time and D-dimer levels. Similarly, in cecal ligation and puncture mice, histones correlated negatively with platelet counts and positively with D-dimer levels. Interestingly, we also observed a positive link between histones and Mg 2+ levels, suggesting that Mg 2+ with anticoagulant activity is involved in histone-mediated coagulation alterations in sepsis. Further animal experiments confirmed that MgSO 4 administration significantly improved survival and attenuated histone-mediated endothelial cell injury, coagulation dysfunction, and lung damage in mice. Conclusion: These results suggest that therapeutic targeting of histone-mediated endothelial cell injury, coagulation dysfunction, and lung damage, for example, with MgSO 4 , may be protective in septic individuals with elevated circulating histone levels.
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Affiliation(s)
- Tao Zhong
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jiaqi Zhang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Shanjia Chen
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Sainan Chen
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ke Deng
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jianbin Guan
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jingjing Yang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ronggui Lv
- Department of Intensive Care Unit, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Zhifeng Liu
- Department of Medicine Intensive Care Units, General Hospital of Southern Theatre Command of PLA, Guangzhou, Guangdong, China
| | - Yong Liu
- Department of Intensive Care Unit, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Ping Chang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhanguo Liu
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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Lv R, Zeng W, Zhang P, Chen X, Yuan K, Shen H, Tian J, Li D, Zhao L, Liu Y. The toxicokinetic and extracorporeal removal of bongkrekic acid during blood purification therapies: A case report. Toxicon 2023; 233:107275. [PMID: 37652101 DOI: 10.1016/j.toxicon.2023.107275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 08/19/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
Bongkrekic acid (BA) poisoning can progress rapidly and lead to the failure of multiple organs, such as brain, liver and kidney. The mortality of BA poisoning is 40-100%. Little information is available on the toxicokinetic parameters of BA in human. Although hemodialysis is widely utilized for patients with severe BA poisoning, the exact amount of BA removed by hemodialysis is poorly documented. We analyzed toxicokinetic parameters, endogenous clearance and hemodialysis clearance in a patient with BA poisoning. A 27-year-old male developed symptoms of severe diarrhea, nausea, vomiting and weakness after eating rice noodles for more than one day. The patient developed multiple organ failures, especially the liver. Initial serum BA concentration was 0.5μg/mL. He received plasmapheresis, routing, and Oxiris-based Continuous Renal Replacement Therapy (CRRT). The whole blood, serum, urine and dialysate BA concentrations were collected and analyzed hourly. Toxicokinetic parameters relationships were determined using noncompartmental analysis. The clearances were determined using standard pharmacokinetic calculations. The disposition of BA was characterized by a long half-life (t1/2 of 102) and high max plasma (CL of 129,000 L/h/kg) following ingestion of contaminated food. The average serum clearance of BA during PE is remarkable higher than CRRT and the endogenous clearance. In contrast, the rates of decline in blood levels during the CRRT treatments were similar to the natural rate of decline. The total amount of BA removed by Plasmapheresis was 5.51mg. However, most CRRT failed to eliminate BA. We report a rare case of BA poisoning with a complication of liver failure and acute kidney damage. The patient expired, even with supportive care, plasmapheresis and hemodialysis. Analysis of whole blood, serum, urine and dialysate concentrations showed limited efficacy of CRRT in removing BA from blood. In contrast, there was significant extraction of BA from Plasmapheresis.
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Affiliation(s)
- Ronggui Lv
- Department of Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Guangdong, Shenzhen, 518101, China; Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, 510280, Guangdong, China
| | - Weixian Zeng
- Department of Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Guangdong, Shenzhen, 518101, China
| | - Pingde Zhang
- Department of Neurosurgery, The University of Hong Kong, Hong Kong, China
| | - Xi Chen
- Department of Pharmacy, Shenzhen Hospital, Southern Medical University, Guangdong, Shenzhen, 518101, China
| | - Ke Yuan
- National Joint Engineering Research Center for Infection Diseases and Cancer Diagnosis, 410007, China
| | - Hongwei Shen
- Department of Clinical Laboratory, Shenzhen Hospital, Southern Medical University, Guangdong, Shenzhen, 518101, China
| | - Jinfei Tian
- Department of Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Guangdong, Shenzhen, 518101, China
| | - Dabin Li
- Accident and Emergency Department (AED), Kiangwu Hospital, Macao SAR, China.
| | - Lingguo Zhao
- Center for Disease Prevention and Control of Baoan District, Guangdong, Shenzhen, 518101, China.
| | - Yong Liu
- Department of Critical Care Medicine, Shenzhen Hospital, Southern Medical University, Guangdong, Shenzhen, 518101, China.
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Guan J, Shichen M, Liang Z, Yu S, Zhao M, Zhang L, Lv R, Liu Y, Chang P, Liu Z. Potential benefits of vitamin D for sepsis prophylaxis in critical ill patients. Front Nutr 2023; 10:1073894. [PMID: 37081919 PMCID: PMC10110989 DOI: 10.3389/fnut.2023.1073894] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 03/21/2023] [Indexed: 04/22/2023] Open
Abstract
Background Vitamin D deficiency is common in critically ill patients with suspected infection and is strongly associated with the predisposition of sepsis and a poor prognosis. The effectiveness of vitamin D supplementation for preventing sepsis remains unclear. This retrospective cohort study investigated the effect of vitamin D supplementation on sepsis prophylaxis in critically ill patients with suspected infection. Methods This retrospective cohort study included 19,816 adult patients with suspected infection in intensive care units (ICU) from 2008 to 2019 at the Beth Israel Deaconess Medical Center, Boston, USA. The included patients were divided into the vitamin D cohort or non-vitamin D cohort according to vitamin D administration status. The primary outcomes were the incidence of sepsis in ICU. The secondary outcomes included 28-day all-cause mortality, length of ICU and hospital stay and the requirements of vasopressors or mechanical ventilation. A propensity score matching cohort was used to test the differences in primary and secondary outcomes between groups. Results The results showed that vitamin D supplementation demonstrated a lower risk of sepsis (odd ratio 0.46; 95% CI 0.35-0.60; P < 0.001) and a lower risk of new mechanical ventilation requirement (odd ratio 0.70; 95% CI 0.53-0.92; P = 0.01), but no significant difference in the risk of 28-day mortality was observed (hazard ratio 1.02; 95% CI 0.77-1.35; P = 0.89). In the sensitive analysis, among the patients who suspected infection within 24 h before or after ICU admission, a lower risk of sepsis and a lower percentage of new mechanical ventilation also were detected in the vitamin D cohort. Conclusion Vitamin D supplementation may have a positively prophylactic effect on sepsis in critically ill patients with suspected infection.
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Affiliation(s)
- Jianbin Guan
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Maoyou Shichen
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhihui Liang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Intensive Care Unit, Guangdong Provincial People’s Hospital Nanhai Hospital, Foshan, Guangdong, China
| | - Shuang Yu
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Min Zhao
- Guangzhou First People’s Hospital, Guangzhou, Guangdong, China
| | - Lu Zhang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ronggui Lv
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Department of Intensive Care Unit, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Yong Liu
- Department of Intensive Care Unit, Shenzhen Hospital, Southern Medical University, Shenzhen, China
| | - Ping Chang
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhanguo Liu
- Department of Critical Care Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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Zhou J, Lv R, Guo BF, Chen C, Zeng Q. [Analysis on the use of radiation protective equipment for the accompanying examinees]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2020; 38:580-582. [PMID: 32892583 DOI: 10.3760/cma.j.cn121094-20200114-00026] [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
Objective: To investigate the situation of wearing protective equipment in the process of X-ray radiation examination (including DR and CT) in a 3A general hospital, so as to provide technical basis and solutions for better reducing the radiation dose of accompanying patients. Methods: From November 1, 2018 to June 30, 2019, the accompanying examinee 6 who had to stay in the examination room during the radiology examination (X-ray and CT examination) of a 3A general hospital from June 1, 2018 to June 30, 2019 was selected 535 people were divided into three groups according to whether they were reminded and instructed to wear protective equipment: group A was not reminded (group A) , group B was reminded to wear protective equipment, and group C was reminded and instructed to wear protective equipment (Group C) . Results: The wearing rates of protective equipment of the three groups were 35.0% (744/2126) , 85.2% (1858/2181) and 91.0% (2028/228) , and the complete wearing rates were 15.0% (319/2126) , 54.8% (1195/2181) and 88.0% (1960/228) , respectively. 4% (1450/3060) , 28.6% (876/3060) , 24.0% (734/3060) , respectively. 523 patients refused to wear protective equipment. The main reasons were emotion (33.8%, 177/523) and time (32.5%, 170/523) . Conclusion: The intervention of radiation workers can effectively improve the correct wearing rate of protective equipment and reduce the radiation exposure of accompanying people.
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Affiliation(s)
- J Zhou
- Medical Department of Tianjin Third Central Hospital, Tianjin 300170, China
| | - R Lv
- Department of Radiology, Tianjin Third Central Hospital, Tianjin 300170, China
| | - B F Guo
- Medical Department of Tianjin Third Central Hospital, Tianjin 300170, China
| | - C Chen
- Department of Radiology, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Q Zeng
- Tianjin Center for Disease Control and Prevention, Tianjin 300011, China
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Miao XJ, Bi TT, Tang JM, Lv R, Gui DK, Yang XF. Regulatory mechanism of TGF-β1/SGK1 pathway in tubulointerstitial fibrosis of diabetic nephropathy. Eur Rev Med Pharmacol Sci 2020; 23:10482-10488. [PMID: 31841202 DOI: 10.26355/eurrev_201912_19687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to clarify the potential function of transforming growth factor-β1/serum/glucocorticoid-regulated kinase 1 (TGF-β1/SGK1) pathway in diabetic nephropathy-induced tubulointerstitial fibrosis. MATERIALS AND METHODS Type 2 diabetes mellitus (T2DM) model was successfully established in rats by high-sucrose-high-fat diet combined with streptozotocin (STZ) induction. Subsequently, blood glucose level, renal function and pathological changes in kidneys of T2DM and control rats were evaluated. Western blot and quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) were conducted to determine the protein and mRNA expression levels of TGF-β1, SGK1, fibronectin (FN) and α-smooth muscle actin (α-SMA) in rat kidney tissues, respectively. RESULTS Blood glucose (BG), glycosylated hemoglobin (GHb), serum creatinine (Scr) and blood urea nitrogen (BUN) in T2DM rats were significantly higher than those of control rats (p<0.05). The morphology of glomeruli and renal tubules in rats of control group were normal. In contrast, T2DM rats showed significant lesions in glomeruli, renal tubules, and renal interstitium. Furthermore, the relative expression levels of TGF-β1, SGK1, FN, and α-SMA in kidney tissues of T2DM rats were remarkably higher than those of controls (p<0.05). CONCLUSIONS The TGF-β1/SGK1 pathway is closely related to tubulointerstitial fibrosis in T2DM rats.
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Affiliation(s)
- X-J Miao
- Department of Geriatrics, The First People's Hospital of Wujiang District Suzhou, Suzhou, China.
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He Y, Li J, Mao W, Zhang D, Liu M, Shan X, Zhang B, Zhu C, Shen J, Deng Z, Wang Z, Yu W, Chen Q, Guo W, Su P, Lv R, Li G, Li G, Pei B, Jiao L, Shen G, Liu Y, Feng Z, Su Y, Xie Y, Di W, Liu X, Yang X, Wang J, Qi J, Liu Q, Han Y, He J, Cai J, Zhang Z, Zhu F, Du D. HLA common and well-documented alleles in China. HLA 2018; 92:199-205. [DOI: 10.1111/tan.13358] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/22/2018] [Accepted: 07/29/2018] [Indexed: 11/29/2022]
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Fan H, Hu Y, Li X, Wu H, Lv R, Bai J, Wang J, Qin L. Ectopic Cartilage Formation Induced by Mesenchymal Stem Cells on Porous Gelatin-Chondroitin-Hyaluronate Scaffold Containing Microspheres Loaded with TGF-β1. Int J Artif Organs 2018; 29:602-11. [PMID: 16841290 DOI: 10.1177/039139880602900610] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The study aimed to produce a novel porous gelatin-chondroitin-hyaluronate scaffold in combination with a controlled release of TGF-β1 and to evaluate its potentials in ectopic cartilage formation. The gelatin-chondroitin-hyaluronate scaffold was developed to mimic the natural extra cellular matrix of cartilage. Gelatin microspheres loaded with TGF-β1 (MS-TGFβ1) showed a fast cytokine release at initial phase (37.4%) and the ultimate accumulated release was 83.1% by day 18. Then MS-TGFβ1 were incorporated into scaffold. The MSCs seeded on scaffold with or without MS-TGFβ1 were incubated in vitro or implanted subcutaneously in nude mice. In vitro study showed that, compared to the scaffold, the scaffold/MS-TGFβ1 significantly augmented the proliferation of MSCs and GAG synthesis. Three weeks postoperatively histology observation showed that in MSCs/scaffold/MS-TGFβ1 implantation group, cells of newly formed ectopic cartilage were located within typical lacunae and demonstrated morphological characteristics of chondrocytes. Six weeks later the ectopic cartilage grew more and islands of cartilage were observed. The matrix was extensively metachromatic by safranin-O/Fast green staining. Immunohistochemical staining also indicated ectopic cartilage was intensely stained for type II collagen. Instead, in the MSCs/scaffold implantation group, no cartilage-like tissue formed and matrix showed negative or weak positive staining. The percentage of positive staining area was significantly larger in MSCs/scaffold/MS-TGFβ1 group (p<0.05) at each time point. The results indicated that the novel gelatin-chondroitin-hyaluronate scaffold with MS-TGFβ1 could induce the chondral differentiation of MSCs to form cartilage and might serve as a new way to repair cartilage defects.
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Affiliation(s)
- H Fan
- Department of Orthopedics and Traumatology, Xijing Hospital, the Fourth Military Medical University, Xi'an - People's Republic of China
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Liu W, Li J, Huang WY, Liu H, Li ZJ, Lv R, Deng SH, Fu MW, Sui WW, Wang TY, Qiu LG, Zou DH. [Dose-adjusted EPOCH/EDOCH plus rituximab in untreated double-protein expression lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2017; 38:548-551. [PMID: 28655103 PMCID: PMC7342966 DOI: 10.3760/cma.j.issn.0253-2727.2017.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - D H Zou
- Department of Lymphoma and Myeloma, Institute of Hematology & Blood Disease Hospital, CAMS & PUMC, Tianjin 300020, China
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Xiong W, Lv R, Li H, Li Z, Wang H, Liu W, Zou D, Qiu L, Yi S. Prevalence of hepatitis B and hepatitis C viral infections in various subtypes of B-cell non-Hodgkin lymphoma: confirmation of the association with splenic marginal zone lymphoma. Blood Cancer J 2017; 7:e548. [PMID: 28362442 PMCID: PMC5380912 DOI: 10.1038/bcj.2017.28] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- W Xiong
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - R Lv
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - H Li
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - Z Li
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - H Wang
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - W Liu
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - D Zou
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - L Qiu
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
| | - S Yi
- State Key Laboratory of Experimental Hematology, Department of Lymphoma and Myeloma, Institute of Hematology and Blood Disease Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
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Lv R, Zhou W, Yang JJ, Jin Y, Xu JG. Hydroxyethyl Starch Inhibits Intestinal Production of Cytokines and Activation of Transcription Factors in Endotoxaemic Rats. J Int Med Res 2016; 33:379-88. [PMID: 16104441 DOI: 10.1177/147323000503300403] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 11/16/2022] Open
Abstract
We studied the effect of hydroxyethyl starch (HES) on intestinal production of cytokines and activation of transcription factors in sepsis. Septic rats, induced by intraperitoneal lipopolysaccharide (LPS) (5 mg/kg), were treated with intravenous HES (16 ml/kg) or saline (64 ml/kg). Rat ileal tissues were collected at 2 h, 3 h or 6 h after LPS challenge. Levels of tumour necrosis factor alpha (TNF-α), interleukin (IL) 1β, IL-6, IL-8 and IL-10, cytokine mRNAs, activities of nuclear factor kappa-B (NF-κB) and activator protein-1 (AP-1), and the number of ileal myeloperoxidase (MPO)-positive cells were determined for each group. HES significantly reduced the LPS-induced increase in intestinal levels of TNF-α, IL-1β, IL-6, IL-8 and their corresponding mRNAs. HES also decreased the number of MPO-positive cells induced by LPS and inhibited activation of NF-κB and AP-1. The results suggest that in sepsis, HES may down-regulate intestinal pro-inflammatory cytokine production via suppression of NF-κB and AP-1 activation.
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Affiliation(s)
- R Lv
- Department of Anaesthesiology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
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Lv R, Xin X, Yu J, Sheng Q. Characterization of a new HLA-B allele, B*15:179:02. Tissue Antigens 2014; 84:586-7. [PMID: 25367758 DOI: 10.1111/tan.12469] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 08/27/2014] [Accepted: 10/01/2014] [Indexed: 11/29/2022]
Abstract
A novel HLA-B allele, B*15:179:02, has been identified during typing of donors in Anhui province, China.
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Affiliation(s)
- R Lv
- Anhui Blood Center, HLA Typing Laboratory, Hefei, China
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An T, Zhang Y, Huang Y, Zhang R, Yin S, Guo X, Wang Y, Zou C, Wei B, Lv R, Zhou Q, Zhang J. Neuregulin-1 protects against doxorubicin-induced apoptosis in cardiomyocytes through an Akt-dependent pathway. Physiol Res 2013; 62:379-85. [PMID: 23590603 DOI: 10.33549/physiolres.932516] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
In previous studies, it has been shown that recombinant human neuregulin-1(rhNRG-1) is capable of improving the survival rate in animal models of doxorubicin (DOX)-induced cardiomyopathy; however, the underlying mechanism of this phenomenon remains unknown. In this study, the role of rhNRG-1 in attenuating doxorubicin-induce apoptosis is confirmed. Neonatal rat ventricular myocytes (NRVMs) were subjected to various treatments, in order to both induce apoptosis and determine the effects of rhNRG-1 on the process. Activation of apoptosis was determined by observing increases in the protein levels of classic apoptosis markers (including cleaved caspase-3, cytochrome c, Bcl-2, BAX and terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling (TUNEL) staining). The activation of Akt was detected by means of western blot analysis. The study results showed that doxorubicin increased the number of TUNEL positive cells, as well as the protein levels of cleaved caspase-3 and cytochrome c, and reduced the ratio of Bcl-2/Bax. However, all of these effects were markedly antagonized by pretreament with rhNRG-1. It was then further demonstrated that the effects of rhNRG-1 could be blocked by the phosphoinositole-3-kinase inhibitor LY294002, indicating the involvement of the Akt process in mediating the process. RhNRG-1 is a potent inhibitor of doxorubicin-induced apoptosis, which acts through the PI3K-Akt pathway. RhNRG-1 is a novel therapeutic drug which may be effective in preventing further damage from occurring in DOX-induced damaged myocardium.
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Affiliation(s)
- T An
- Heart Failure Center, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Abstract
Moyamoya syndrome (MMS) is a rare, chronic progressive cerebrovascular occlusive disease that is characterized by a stenosis or occlusion of the bilateral internal carotid arteries and the circle of Willis arteries leading to the development of collateral vessels as visualized by cerebral angiography. We report a case of a 24-year-old woman with nephrotic syndrome whose biopsy showed membranous nephropathy. Ten months after the diagnosis she suffered sudden right hemiplegia and seizure. She was diagnosed with MMS by angiogram seven months ago and received decompressive craniotomy. The patient was admitted to our hospital and a diagnosis of systemic lupus erythematosus (SLE) was made. Glucocorticoids and tacrolimus were used to control the symptoms of SLE. Following one month of immunosuppressant treatment, the patient died of brain hemorrhage. This case alongside another six reviewed cases shows that an underlying cerebrovascular lesion of moyamoya in the vessels of patients with SLE is susceptible to cerebrovascular accidents.
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Affiliation(s)
- R Wang
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, People's Republic of China
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Liu Y, Lu Z, Fan P, Duan Q, Li Y, Tong S, Hu B, Lv R, Hu L, Zhuang J. Clinical efficacy of chemotherapy combined with verapamil in metastatic colorectal patients. Cell Biochem Biophys 2011; 61:393-8. [PMID: 21562945 DOI: 10.1007/s12013-011-9198-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In order to determine the clinical efficacy and adverse reactions of chemotherapy and verapamil infusion through a target artery to treat colorectal cancer patients with metastasis after failure with previous conventional treatments. Patients with metastatic colon cancer (n = 36) received an infusion of verapamil, interleukin-2, oxaliplatin (or hydroxy camptothecin or irinotecan hydrochloride), fluorouracil and calcium folinate through target artery using the Seldinger puncture technique. From the second day of infusion, the patients were treated with fluorouracil and calcium folinate via systematic intravenous injection for 2-3 days. Efficacy was evaluated after at least two treatment courses. The objective response including complete or partial response was 58.3% in the 36 patients; clinical benefit rate, evaluated by Karnofsky Performance Status score was 91.7%; by weight was 83.3%; by the amount of painkiller consumed was 80.6%. No patient experienced side effects associated with heart function. Post-treatment, the P-R period, Q-T period, QRS, and heart rate were not significantly different than before treatment. Liver function was significantly improved. Side effects of chemotherapy were minor in comparison to those observed with intravenous chemotherapy. Infusion of verapamil and chemotherapy directly into pelvic tumor tissue can increase treatment efficacy and has been shown to be a relatively safe technique.
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Affiliation(s)
- Y Liu
- Anhui Tumor Hospital, Anhui, China.
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Lv R, Zheng L, Zhu Z, Pan L, Huang J, Hsiang T. First Report of Stem Blight of Eleocharis dulcis Caused by Phoma bellidis in China. Plant Dis 2011; 95:1190. [PMID: 30732029 DOI: 10.1094/pdis-05-11-0438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Eleocharis dulcis is a perennial herbaceous plant in the family Cyperaceae, which is native to China and India where it grows well in moist-to-wet soils. It is commonly used as a fruit or a vegetable. From August 2009 to December 2010, symptoms were observed on E. dulcis stems in Tuanfeng County, Hubei, China, with the crop area affected estimated to be more than 1,300 ha per year. Corm yield was reduced by 20% on average with as much as 60% yield losses in some fields. Lesions were initially small, red-brown, and oval or circular that enlarged to produce apical necrosis and extending until the stems withered, usually within 2 months. To obtain isolates, diseased tissue was disinfested for 1 min in 0.1% mercuric chloride solution, rinsed with sterilized water, and plated on potato dextrose agar. Isolates with similar morphological characteristics were consistently recovered. Three isolates, CTF-3, CTF-10, and CTF-11, were used to further evaluate characteristics of the pathogen. After 7 days, white colonies were 76 to 80 mm across on oatmeal agar (OA) with sparse aerial hyphae and a slight salmon color in the conidial masses. Pycnidia produced on OA were globose to subglobose, usually with one slightly ostiolar papilla, olivaceous to olivaceous black, and 93 to 245 μm in diameter. Conidia were hyaline, unicellular, ellipsoidal, mostly with two polar guttules, and 3.6 to 6.2 × 2.0 to 3.3 μm. Chlamydospores were absent. Growth of the isolates on malt extract agar (MEA) was slower than on OA, and the colony diameters at 7 days were 60 to 65 mm. The reactions with 1M NaOH were both positive on OA and MEA where the cultures initially changed to yellow green and gradually turned to red. The pathogen was identified as Phoma bellidis Neerg. based on descriptions in Boerema et al. (2). Pathogenicity tests were performed with the three isolates in the laboratory by spraying conidial suspensions (1 × 106 conidia/ml) containing 0.1% Tween 20 until runoff (30 ml per plant) onto stem surfaces of 50-day-old, 60 cm tall plants. For each isolate, there were 50 stems from five replicate plants that had multiple stems per plant. Control plants were treated with sterilized water containing 0.1% Tween 20 only. Plants were incubated with a 16-h photoperiod at 28°C and 90% relative humidity in an artificial climate chamber. Five days after inoculation, typical red-brown spots were observed on all inoculated stems but no symptoms were seen on water-treated control plants. Koch's postulates were fulfilled by reisolation of P. bellidis from diseased stems. The pathogenicity tests were repeated twice more with the same results. P. bellidis has only been reported previously on Bellis spp. from England, Denmark, Italy, the Netherlands, and Switzerland (1,2). Furthermore, there are only a few fungal diseases known to be associated with E. dulcis, and none so far that involve species of Phoma (3,4). To our knowledge, this is the first report of P. bellidis infecting E. dulcis worldwide. References: (1) M. M. Aveskamp et al. Stud. Mycol. 65:27, 2010. (2) G. H. Boerema et al. Phoma Identification Manual: Differentiation of Specific and Infra-Specific Taxa in Culture. CABI Publishing, Wallingford, UK, 2004. (3) P. L. Lentz. Am. Midl. Nat. 67:184, 1962. (4) L. Pan et al. J. Changjiang Vegetables (in Chinese) 14:10, 2010.
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Affiliation(s)
- R Lv
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - L Zheng
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Z Zhu
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - L Pan
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - J Huang
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - T Hsiang
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, N1G 2W1, Canada. The research was supported by the special fund for Agro-Scientific Research in the Public Interest, China (200903017)
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Zheng L, Lv R, Li Q, Huang J, Wang Y, Hsiang T. First Report of Leaf Spot of Houttuynia cordata Caused by Alternaria alternata in China. Plant Dis 2011; 95:359. [PMID: 30743519 DOI: 10.1094/pdis-10-10-0724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Houttuynia cordata is a perennial herbaceous plant (family Saururaceae) that is native to southern China, Japan, Korea, and Southeast Asia where it grows well in moist to wet soils. It is commonly used as a Chinese herbal medicine and as a vegetable. In North America and Europe it is also used as an ornamental. From September 2007 to November 2009, symptoms of leaf spot were found on H. cordata leaves in Dangyang County, Hubei, China, with the crop area affected estimated to be over 600 ha per year. Rhizome yield was reduced by 20% on average, with up to 70% yield losses in some fields during the autumn growing season. Lesions were initially small, brown, and oval or circular that developed into dark spots and sometimes formed target spots with white centers. These spots enlarged and overlapped, extending until the leaves withered entirely usually within 2 months. A fungus was consistently recovered from symptomatic leaf samples collected in October 2008 or 2009 with an average 90% isolation rate from ~60 leaf pieces that were surface sterilized with 0.1% mercuric chloride solution. Three isolates, HCDY-2, HCDY-3, and HCDY-4, were used to further evaluate characteristics of the pathogen. On potato dextrose agar, all cultures initially developed white colonies and the centers turned gray or brown after 4 days of incubation. Conidiophores were single or fasciculate, straight or knee curved, gray-brown with regular septa, and 42 to 61 × 4 to 5 μm. Conidia were obclavate or ovate, brown, and 26 to 38 × 12 to 20 μm with three to five transverse and one to three longitudinal or oblique septa. The tops of some conidia developed into secondary conidiophores, which were cylindrical, beige, and 5 to 17 × 3 to 5 μm. The pathogen was identified as Alternaria alternata based on descriptions in Simmons (3). Genomic DNA of HCDY-2 was extracted, and the rDNA-internal transcribed spacer sequence showed 99.6% identity to A. alternata (GenBank No. AY513941). Pathogenicity tests were performed with the three isolates by spraying conidial suspensions (1 × 106 conidia/ml) containing 0.1% Tween 20 onto upper and lower surfaces of leaves of 40-day-old 15-cm high plants. There were 20 leaves from five replicate plants for each isolate. Control plants were treated with sterilized water containing 0.1% Tween 20 only. All plants were incubated with a 16-h photoperiod at 25°C and 90% relative humidity in an artificial climate chamber. Five days after inoculation, typical brown spots were observed on all inoculated leaves but no symptoms were seen on water-treated control plants. Koch's postulates were fulfilled by reisolation of A. alternata from diseased leaves. The pathogenicity tests were carried out twice. A survey of the literature revealed only a few fungal diseases associated with H. cordata (1,2,4), including Phyllosticta houttuyniae, Pseudocercospora houttuyniae, Rhizoctonia solani, and Sclerotium rolfsii. Although A. alternata is a cosmopolitan plant pathogen, it has not been reported on any species in the four genera in Saururaceae (Anemopsis, Gymnotheca, Houttuynia, and Saururus) (3). To our knowledge, this is the first report of A. alternata infecting H. cordata worldwide. References: (1) Y. L. Guo and W. X. Zhao. Acta Mycol. Sin. 8:118, 1989. (2) K. Sawada. Spec. Publ. Taiwan Univ. 8:138, 1959. (3) E. G. Simmons. Alternaria: An Identification Manual. The American Phytopathological Society, St. Paul, MN, 2007. (4) Y. Wu et al. J. Changjiang Vegetables (In Chinese) 2:19, 2007.
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Affiliation(s)
- L Zheng
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - R Lv
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Q Li
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - J Huang
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Y Wang
- Hubei Academy of Forestry, Wuhan, Hubei, 430079, China
| | - T Hsiang
- School of Environmental Sciences, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
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Zhang P, Lv R, Xu CP, Hu XH, Li YW, Jiang H, Chen JH. Impact of clinical condition at restarting dialysis on outcome after kidney allograft loss: a single-center experience. Transplant Proc 2010; 42:1708-12. [PMID: 20620506 DOI: 10.1016/j.transproceed.2010.02.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2009] [Revised: 01/12/2010] [Accepted: 02/02/2010] [Indexed: 10/19/2022]
Abstract
BACKGROUND The purpose of this paper was to determine the impact of the clinical condition of the patient at the restart of dialysis on long-term survival after renal graft loss. METHODS We performed an analysis of 110 patients with renal allograft failure compared with 115 hemodialysis patients without kidney transplantation. RESULTS There was a relatively high glomerular filtration rate, low serum albumin, and greater prevalence of infection among graft loss patients compared with the never-transplanted patients. Patient survival after allograft loss was significantly lower than that of never-transplanted patients (P = .024) with 63.4% patients succumbing in the first 3 months. Serum hepatitis B virus (HBV) positivity, cardiovascular disease (CVD) and malnutrition were independent risk factors for graft loss patient upon COX regression analysis. CONCLUSIONS Serum HBV positive, complicated with CVD and malnutrition were independent risk factors for the graft loss among patients who restarted hemodialysis. More attention should be paid to treat complications of transplant recipients in K/DOQI 4 and 5 stages.
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Affiliation(s)
- P Zhang
- Kidney Disease Center, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, Zhejiang, P.R. China
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Abstract
OBJECTIVES To assess the impact of childhood epilepsy on parental quality of life (QOL) and psychological health, and to investigate possible correlations between parental QOL and background variables as well as parental anxiety and depression. SUBJECTS AND METHODS Parents having an epileptic child (n = 263) and parents having a healthy child (n = 270) were enrolled. Groups were in balance for background variables. Short-Form Health Survey (SF-36) Questionnaire, Zung Depression Scale (ZDS) and Zung Anxiety Scale (ZAS) were applied to all parents. Patients were divided into the first visit group (newly diagnosed epilepsy) and follow-up visit group. RESULTS The parents of children with epilepsy had significantly lower QOL scores in SF-36 for all subscales and higher levels of depression and anxiety by using ZDS and ZAS. The factors correlated with parental QOL were seizure control, visit status, anxiety, depression, employment, cost of epilepsy, status epilepticus, drug side effect and age of parents. CONCLUSIONS Childhood epilepsy has a severe impact on parental QOL and psychological health, and recognition of possible correlations between parental QOL and background variables will be helpful to improve parental QOL.
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Affiliation(s)
- R Lv
- Department of Neurology, Peking Union Medical College Hospital, Peking Union Medical College, Beijing, P R China
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Zhang L, Zheng L, Hsiang T, Lv R, Huang J. An Outbreak of Head Rot of Cabbage Caused by Rhizoctonia solani AG2-1 in Central China. Plant Dis 2009; 93:109. [PMID: 30764277 DOI: 10.1094/pdis-93-1-0109b] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In July of 2007, an outbreak of head rot of cabbage (Brassica oleracea) occurred on more than 2,500 ha in Changyang County, Hubei Province, China. On average, yields were reduced by approximately 50%. Affected plants were first observed in 2006, and symptoms were considered physiological or nutritional disorders by growers. In 2007, the more extensive summer rains favored an increase in disease severity. Initial symptoms consisted of irregular, brown-to-black lesions on leaves and sometimes a wet decay of the base of outer leaves. Lesions expanded until entire heads were rotted. Rhizoctonia solani was recovered consistently from symptomatic plant tissues. Five isolates were used to evaluate cultural and morphological characteristics of the pathogen. On potato dextrose agar (PDA), all isolates yielded colonies that became brown after 5 days of incubation. The hyphae, 4.9 to 8.0 μm in diameter, branched at right or acute angles near the septa and each cell usually had six to eight nuclei. Dark brown sclerotia, 0.5 to 5 mm in diameter, appeared after 10 days of incubation. Genomic DNA of a representative isolate, CY-1, was extracted, and the rDNA-internal transcribed spacer sequence showed 99.5% identity to R. solani AG2-1 (Accession No. EU513147) in GenBank. Pathogenicity tests were completed in the laboratory by placing 6-mm-diameter mycelial plugs from 3-day-old PDA cultures of the five isolates onto 30 cabbage leaves detached from 5-week-old cabbage plants. The inoculated leaves were incubated at 28°C with 95% relative humidity in a controlled environment chamber. Two days after inoculation, black, wet lesions were observed on all inoculated leaves, while no symptoms were apparent on leaves inoculated with noncolonized PDA plugs. Koch's postulates were fulfilled by reisolating R. solani from diseased leaves. R. solani AG1 (1), AG2-1 (2), and AG4 (4) have been reported as causal agents of diseases of cabbage and related plants, and AG2-1 has been previously isolated from cabbage grown in southwest China (3), but to our knowledge, this is the most severe outbreak reported from China. References: (1) G. S. Abawi and S. B. Martin. Plant Dis. 69:158, 1985. (2) L. Corazza et al. Eur. J. Plant Pathol. 101:341, 1995. (3) H. R. Li and H. H. Zhu. J. Yunnan Agric. Univ. 3:247, 1993. (4) G. H. Yang et al. Plant Pathol. 56:351, 2007.
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Affiliation(s)
- L Zhang
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - L Zheng
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - T Hsiang
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - R Lv
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - J Huang
- Key Lab of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
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Li X, Lv R, He Q, Li H, Du X, Lin W, Li Q, He X, Wang S, Chen J. Early initiation of tacrolimus or cyclophosphamide therapy for idiopathic membranous nephropathy with severe proteinuria. J Nephrol 2008; 21:584-591. [PMID: 18651550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND Early initiation of therapy is warranted for patients with idiopathic membranous nephropathy (IMN) who have severe proteinuria. Therapy with tacrolimus (TAC) or intravenous cyclophosphamide (CYC) may be an option in treating such patients. METHODS This prospective cohort study included patients with IMN whose daily proteinuria was greater than 6.0 g with 3-6 months observation of nonimmunosuppressive therapy. One cohort received prednisone combined with oral TAC (target trough blood level of 4-8 ng/mL) for 24 weeks. The other cohort received prednisone combined with intravenous CYC (750 mg/m2 body surface) every 2 weeks for the first 8 weeks and then once per 4 weeks for the next 16 weeks. RESULTS Thirty patients met criteria for enrollment, and 25 patients completed therapy. The results of the 24-week therapeutic period were complete remission (CR) 4 patients (30.8%) on CYC and 8 patients (66.7%) on TAC; partial remission (PR) 7 patients (53.8%) on CYC and 3 patients (25%) on TAC; no response 2 patients (15.4%) on CYC and 1 patient (8.3%) on TAC. The percentages of remission (either PR or CR) by 4 and 8 weeks were significantly higher in TAC group than in CYC group (p<or=0.05). The probability of CR was significantly higher in the TAC group than in the CYC group (p=0.018, by log-rank test). CONCLUSION Earlier initiation of therapy with TAC or intravenous CYC (combined steroid) for 24 weeks was useful for Chinese adults with IMN in inducing remission of severe proteinuria, and quicker remission was seen in TAC therapy.
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Affiliation(s)
- X Li
- Kidney Disease Center, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou - PR China
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Ge YL, Lv R, Zhou W, Ma XX, Zhong TD, Duan ML. Brain damage following severe acute normovolemic hemodilution in combination with controlled hypotension in rats. Acta Anaesthesiol Scand 2007; 51:1331-7. [PMID: 17944636 DOI: 10.1111/j.1399-6576.2007.01448.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/27/2022]
Abstract
BACKGROUND AND AIM The reduced oxygen content and perfusion pressure during acute normovolemic hemodilution (ANH) and controlled hypotension (CH) raise concerns about hypoperfusion and ischemic injury to the brain. In this study on rats, we examined the brain damage following four different degrees of ANH combined with CH. METHODS Forty rats were randomly assigned to receive a sham operation or CH and ANH [with a hematocrit (Hct) of 30, 25, 20 or 15%]. ANH was performed after baseline physiological parameters had been monitored for 20 min; 30 min later, CH was induced using sodium nitroprusside, and the mean arterial blood pressure was maintained at 50-60 mmHg for 1 h. Rats were killed 3.5 h after hemodilution. Ultrastructural alterations in the CA1 region of the rat hippocampus were observed, and serum concentrations of S100B and neuron-specific enolase (NSE) were measured before and after ANH. RESULTS The serum S100B concentration increased significantly in the Hct 20% + CH and Hct 15% + CH groups. However, there were no significant differences in the serum levels of NSE between the groups. In the CA1 region of the rat hippocampus, marked ultrastructural alterations, such as mitochondrial denaturalization and nucleus distortion, were observed in the Hct 20% + CH and Hct 15% + CH groups. CONCLUSION Severe ANH (Hct < or = 20%) combined with CH may induce cerebral damage, as confirmed by marked ultrastructural alterations in the CA1 region of the rat hippocampus and significantly increased serum levels of S100B, and should be avoided.
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Affiliation(s)
- Y L Ge
- Department of Anesthesiology, Subei People's Hospital, Xuzhou Medical College, Xuzhou, China
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Abstract
BACKGROUND Adipose tissue has been demonstrated to contain a population of progenitor cells that can differentiate into bone and cartilage. Studies have suggested that adipose-derived adult stem (ADAS) cells can be induced to differentiate into chondrocytes by transforming growth factor-beta (TGF-beta). In this study, we examined whether bone morphogenetic protein-2 (BMP-2), as a member of the TGF-beta superfamily, could regulate ADAS cells to differentiate into a chondrolineage. METHODS ADAS cells were isolated and induced by rhBMP-2. These cells were cultured in pellets for 2 weeks, and the chondrogenic phenotype was observed in vitro and in vivo. ADAS cells cultured without BMP-2 were used as controls. RESULTS After 2 weeks of culture, the differentiated ADAS cells reacted positively to Alcian blue and collagen II, and the content of collagen II protein was obviously up-regulated at day 14. Glycosaminoglycan (GAG) content gradually increased from day 2 to day 14 (P < 0.05). However, H&E staining and collagen II expression were weak, and there was a little collagen II protein and GAG detected in the control group. Additionally, the pellets of ADAS cells induced by rhBMP-2 were transplanted into BALB/C nude mice and formed cartilage lacuna at week 8 in vivo. DISCUSSION These data demonstrate that rhBMP-2 induce ADAS cells to differentiate into chondrocytes in vitro and in vivo. This is useful for basic and clinical studies aimed at repairing cartilage damage. But in a control group, ADAS cells tended towards differentiation into chondrocytes, which was affected by ITS. We will be exploring the mechanism further.
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Affiliation(s)
- Y Wei
- Institute of Orthopaedics and Traumatology, Xijing Hospital, The Fourth Military Medical University, Xi'an, People's Republic of China
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Abstract
BACKGROUND The role of cytomegalovirus (CMV) infection in renal allograft rejection remains controversial; moreover, there are few studies on pretransplant infections. This study sought to investigate whether pretransplant CMV infections had negative effects on acute rejection episodes (ARE) and to evaluate the effect of preemptive treatment. METHODS This retrospective single-center study of 416 transplant recipients from October 1, 2000 to September 1, 2003 had CMV infections diagnosed by CMV antigenemia tests. The incidences of ARE were compared between CMV-infected and noninfected groups. Risk factors for ARE were analyzed. Based on preemptive treatment, pretransplant CMV-infected recipients were divided into ganciclovir-treated and nontreated groups and the incidence of ARE was compared between the two groups. RESULTS One hundred eighty four recipients had CMV infections pretransplant; the infection rate was 44.2%. Fifty five recipients had ARE among the pretransplant CMV-positive group, which was significantly higher than that in the noninfected group (29.9% vs 19.5%, P = .014). But the rejection subgroups and renal function recovery had no significant differences. While the presence of pretransplant infection was an independent predictor of ARE (RR = 1.807), severity showed no significant impact on ARE. Among 184 pretransplant CMV infection recipients, the incidences of ARE were 14.3% and 18.0% in ganciclovir-treated versus nontreated patients, respectively (P = .650). CONCLUSIONS Pretransplant CMV-positive recipients were at greater risk of ARE. Pretransplant CMV infection was an independent risk factor for ARE. Preemptive antiviral treatment did not show protective effects against ARE related to CMV infection-mediated immunological injuries.
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Affiliation(s)
- J H Chen
- Kidney Disease Center, the First Affiliated Hospital of Medical College, Department of Nephrology, Medical College of Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.
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27
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Lv R, Zhou W, Zhang LD, Xu JG. Effects of hydroxyethyl starch on hepatic production of cytokines and activation of transcription factors in lipopolysaccharide-administered rats. Acta Anaesthesiol Scand 2005; 49:635-42. [PMID: 15836676 DOI: 10.1111/j.1399-6576.2005.00668.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Hydroxyethyl starch (HES) is one of the most frequently used plasma substitutes. Some studies have indicated that HES may have anti-inflammatory effects. The present in vivo study was performed to investigate the effects of HES on hepatic production of cytokines and activation of transcription factors in sepsis. METHODS Adult male Sprague-Dawley rats were randomly divided into four groups: rats challenged with lipopolysaccharide (LPS) (5 mg kg(-1)) and treated with saline (64 ml kg(-1)); challenged with LPS (5 mg kg(-1)) and treated with HES (16 ml kg(-1)); injected with saline and treated with HES (16 ml kg(-1)); and saline control. Each hepatic tissue was collected in groups of rats 2 h after induction of endotoxemia for determination of tumour necrosis factor (TNF)-alpha levels, TNF-alpha mRNA expressions, and nuclear factor (NF)-kappaB, activator protein (AP)-1 activities or 3 h after LPS challenge for IL-1beta, IL-6, IL-8, IL-10 levels and the mRNA expressions. RESULTS Endotoxemia was associated with significant increases in hepatic proinflammatory cytokine productions and transcription factor activities. HES significantly reduced the increased hepatic levels of TNF-alpha, IL-1beta, IL-6, IL-8 and the mRNAs in the endotoxemic rats. Similarly, HES could inhibit hepatic NF-kappaB and AP-1 activations. CONCLUSION The results suggest that in sepsis HES may down-regulate hepatic inflammatory mediators production and these anti-inflammatory effects may act through inhibition of NF-kappaB and AP-1 activations.
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Affiliation(s)
- R Lv
- Nanjing University School of Medicine, Jinling Hospital, 305 East Zhongshan Road, Nanjing 210 002, China
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28
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Abstract
A 22-year-old woman with an initial diagnosis of 'ruptured ectopic pregnancy' and 'hemorrhagic shock' was sent to the operation room for surgical treatment. The mucocutaneous color was deeply cyanosed and the pulse oximeter oxygen saturation (SpO2) was only 86% after tracheal intubation (100% O2). 'Chocolate-brown' blood was observed and methemoglobinemia was considered. Then the arterial blood gas (ABG) sample was obtained, an intravenous infusion of methylene blue and vitamin C followed. The patient recovered quickly, and later two other patients with similar symptoms were treated in the same way. The success was due to a correct diagnosis accompanied with prompt treatment and quick recognition of the etiology.
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Affiliation(s)
- J J Yang
- Medical School of Nanjing University and Department of Anesthesiology, Jinling Hospital, Nanjing, China
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Sun J, Zhou ZQ, Lv R, Li WY, Xu JG. Ketamine inhibits LPS-induced calcium elevation and NF-kappa B activation in monocytes. Inflamm Res 2004; 53:304-8. [PMID: 15241565 DOI: 10.1007/s00011-004-1262-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [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: 12/18/2003] [Accepted: 01/26/2004] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE To investigate whether ketamine could inhibit lipopolysaccharide (LPS)-induced intracellular calcium elevation and NF-kappa B activation in monocytes. MATERIALS AND METHODS Isolated rat monocytes were challenged with 10 microg/ml LPS with or without the presence of various concentrations of ketamine (10, 100, 1000 microM). Intracellular calcium was monitored by laser confocal microscopy. NF-kappa B activity of the nuclear extracts of monocytes was analyzed by electrophoretic mobility shift assay (EMSA). RESULTS LPS provoked a significant calcium elevation and enhanced NF-kappa B activity in monocytes. Ketamine above concentration of 100 microM inhibited endotoxin-induced intracellular calcium elevation and NF-kappa B activity. Ketamine itself had no effect on either of them. CONCLUSIONS These findings suggest that ketamine could suppress NF-kappa B in monocytes exposed to endotoxin, and this anti-inflammatory effect might act through attenuating intracellular calcium elevation.
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Affiliation(s)
- J Sun
- Department of Anesthesiology, Jinling Hospital, School of Medicine, Nanjing University, 305 East Zhongshan Road, 210002, Nanjiing, China.
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