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Wang G, Zhang FR. [Spatial and Temporal Evolution and Impact Factors Analysis of Ecosystem Service Value in the Liaohe River Delta over the Past 30 Years]. Huan Jing Ke Xue 2024; 45:228-238. [PMID: 38216474 DOI: 10.13227/j.hjkx.202301081] [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: 01/14/2024]
Abstract
An in-depth study of the spatiotemporal variation characteristics and driving factors of ecosystem service values in the Liaohe River Delta is of great significance to its ecological environment governance and protection. Based on the land use data of the Liaohe River Delta for seven periods from 1990 to 2020, the ecosystem service value (ESV) was evaluated according to the equivalent factor coefficient correction method, establishing models for estimating the value of ecosystem services; the spatial and temporal evolution characteristics of the ESV in the study area were comprehensively analyzed; and the driving influencing factors and mechanisms of the ESV were explored. The results showed that:① From 1990 to 2020, the most common land use type in the Liaohe River Delta was cultivated land, and the areas of forest land, wetland, and unutilized land showed a decreasing trend; grassland, water, and construction land showed an increasing trend; and the area of cultivated land was basically unchanged during the 30 year period. ② In terms of the temporal evolution, the ESV in the study area showed a trend of first decreasing, then increasing, and then decreasing. In terms of the spatial distribution of ESV, the total value of ecosystem services as a whole showed a spatial divergence pattern of a high value in the southwest and low value in the northeast. ③ The sensitivity index of all land use types in the Liaohe River Delta was less than 1, indicating that the ESV was inelastic. ④ The value of ecosystem services in the Liaohe River Delta showed positive spatial coherence. On the whole, the Liaohe River Delta was dominated by HH and LL clusters, with HL clusters mostly distributed at the boundaries of LL clusters and LH clusters distributed at the boundaries of HH clusters. ⑤ Among the factors influencing the evolution of ESV in the Liaohe River Delta, DEM had the least influence, and HAI had the greatest influence on the ESV, followed by precipitation. The interaction results of all influencing factors had an enhancing effect on the spatial distribution of the ESV, among which HAI and precipitation had the strongest interaction effect, reaching 95.58%.
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Affiliation(s)
- Geng Wang
- School of Geographical Sciences, Liaoning Normal University, Dalian 116029, China
| | - Fu-Rong Zhang
- School of Geographical Sciences, Liaoning Normal University, Dalian 116029, China
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Zhang D, Ge F, Ji J, Li YJ, Zhang FR, Wang SY, Zhang SJ, Zhang DM, Chen M. β-sitosterol alleviates dextran sulfate sodium-induced experimental colitis via inhibition of NLRP3/Caspase-1/GSDMD-mediated pyroptosis. Front Pharmacol 2023; 14:1218477. [PMID: 37954856 PMCID: PMC10637366 DOI: 10.3389/fphar.2023.1218477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 10/16/2023] [Indexed: 11/14/2023] Open
Abstract
Background: Inflammation-related NLRP3/Caspase-1/GSDMD-mediated pyroptosis is involved in the progression of ulcerative colitis (UC). β-sitosterol (SIT) was reported to have anti-inflammatory effects on experimental colitis, while the regulation of SIT on pyroptosis is unclear. Therefore, the present study aimed to define the protective and healing effects of SIT on dextran sulfate sodium (DSS)-induced experimental UC rats and human epithelial colorectal adenocarcinoma cells (Caco-2) and explore the underlying mechanisms that are responsible for its effects on NLRP3/Caspase-1/GSDMD-mediated pyroptosis in UC. Methods: UC model rats were established by oral 4% DSS. Following colitis injury, the animals received SIT (doses of 50, 100, and 200 mg/kg) treatment for 2 weeks. For in vitro study, we exposed Caco-2-50 mg/mL DSS with or without SIT (concentrations of 8 and 16 μg/mL). Disease activity index (DAI) and histopathological injury were assessed in vivo. Activation proteins of nuclear factor kappa B (NF-κB) signaling axis, and tight junction-related proteins of zonula occludens-1 (ZO-1) and occludin were detected in colon tissues. TNF-α, IL-1β, and IL-18 in serum and cell supernatant were measured by enzyme-linked immunosorbent assay (ELISA). Changes in NLRP3/Caspase-1/GSDMD-mediated pyroptosis signaling pathway activation were analyzed both in tissues and cells. Results: Our findings suggested that SIT treatment attenuated the severity of 4% DSS-induced UC by protecting rats from weight and colon length loss, and macroscopic damage. SIT also reduced proinflammatory factors production (TNF-α, IL-1β, and IL-18) in serum and cell supernatant. Mechanistically, SIT downregulated the expression levels of pyroptosis-related proteins including Caspase-1, cleaved-Caspase-1, NLRP3, GSDMD, and GSDMD-N in colon tissues and Caco-2 cells. Further analysis indicated that SIT maintained the colonic barrier integrity by enhancing the protein expression of ZO-1 and occludin. Conclusion: We confirmed that SIT exerts protective and therapeutic effects on DSS-induced colitis injury by suppressing NLRP3/Caspase-1/GSDMD-mediated pyroptosis and inflammation response. These findings demonstrated that SIT could be a potential medication for UC treatment.
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Affiliation(s)
- Di Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Fei Ge
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Jing Ji
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yu-Jing Li
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Fu-Rong Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Shu-Yan Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Shu-Jing Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Dong-Mei Zhang
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital, Affiliated Hospital of Beijing University of Chinese Medicine, Beijing, China
| | - Meng Chen
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
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Li XH, Pang WW, Zhang Y, Liu DY, Yi QR, Wang N, Zhang FR, Deng Y, Chen XD, Greenbaum J, Xiao HM, Deng HW, Tan LJ. A Mendelian randomization study for drug repurposing reveals bezafibrate and fenofibric acid as potential osteoporosis treatments. Front Pharmacol 2023; 14:1211302. [PMID: 37547327 PMCID: PMC10397407 DOI: 10.3389/fphar.2023.1211302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 06/29/2023] [Indexed: 08/08/2023] Open
Abstract
Background: Lipid pathways have been implicated in the pathogenesis of osteoporosis (OP). Lipid-lowering drugs may be used to prevent and treat OP. However, the causal interpretation of results from traditional observational designs is controversial by confounding. We aimed to investigate the causal association between genetically proxied lipid-lowering drugs and OP risk. Methods: We conducted two-step Mendelian randomization (MR) analyses to investigate the causal association of genetically proxied lipid-lowering drugs on the risk of OP. The first step MR was used to estimate the associations of drug target genes expression with low-density lipoprotein cholesterol (LDL-C) levels. The significant SNPs in the first step MR were used as instrumental variables in the second step MR to estimate the associations of LDL-C levels with forearm bone mineral density (FA-BMD), femoral neck BMD (FN-BMD), lumbar spine BMD (LS-BMD) and fracture. The significant lipid-lowering drugs after MR analyses were further evaluated for their effects on bone mineralization using a dexamethasone-induced OP zebrafish model. Results: The first step MR analysis found that the higher expression of four genes (HMGCR, NPC1L1, PCSK9 and PPARG) was significantly associated with a lower LDL-C level. The genetically decreased LDL-C level mediated by the PPARG was significantly associated with increased FN-BMD (BETA = -1.38, p = 0.001) and LS-BMD (BETA = -2.07, p = 3.35 × 10-5) and was marginally significantly associated with FA-BMD (BETA = -2.36, p = 0.008) and reduced fracture risk (OR = 3.47, p = 0.008). Bezafibrate (BZF) and Fenofibric acid (FBA) act as PPARG agonists. Therefore genetically proxied BZF and FBA had significant protective effects on OP. The dexamethasone-induced OP zebrafish treated with BZF and FBA showed increased bone mineralization area and integrated optical density (IOD) with alizarin red staining. Conclusion: The present study provided evidence that BZF and FBA can increase BMD, suggesting their potential effects in preventing and treating OP. These findings potentially pave the way for future studies that may allow personalized selection of lipid-lowering drugs for those at risk of OP.
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Affiliation(s)
- Xiao-Hua Li
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
- School of Physical Education, Hunan University of Arts and Science, Changde, Hunan, China
| | - Wei-Wei Pang
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Yue Zhang
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Dan-Yang Liu
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Qiao-Rong Yi
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Ning Wang
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Fu-Rong Zhang
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Yun Deng
- Zebrafish Genetics Laboratory, College of Life Sciences, Hunan Normal University, Changsha, China
| | - Xiang-Ding Chen
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Jonathan Greenbaum
- Tulane Center of Biomedical Informatics and Genomics, Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA, United States
| | - Hong-Mei Xiao
- Center for System Biology, Data Sciences, and Reproductive Health, School of Basic Medical Science, Central South University, Changsha, China
| | - Hong-Wen Deng
- Tulane Center of Biomedical Informatics and Genomics, Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA, United States
| | - Li-Jun Tan
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
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Liu J, Sun Y, Zhang FR, Zeng XP, Wang LJ, Zhu MY, Sun SJ, Yu S. [Pathogenic detection and molecular tracing of a bacillary dysentery outbreak by Shigella sonnei in Huainan city]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:437-442. [PMID: 35488539 DOI: 10.3760/cma.j.cn112150-20210409-00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To understand the virulence gene and drug resistance profile of Shigella sonnei outbreak in Huainan city, and conduct pathogenic traceability analysis. Methods: Water samples and feces related to an infectious diarrhea outbreak in Huainan city in August 2020 were collected for multiple pathogen detection. Virulence gene, drug sensitivity, pulse-field gel electrophoresis and whole genome sequencing of Shigella isolates were analyzed respectively. Results: 38 strains of Shigella sonnei were detected in 56 samples of mucilage feces with a positive rate 67.86%, and all serotypes were Shigella sonnei Phase I. Three strains of Shigella sonnei were detected by fluorescence PCR in the Gram-negative (GN) bacterial enrichment solution of terminal water and well water. Virulence genes were ipaH positive (38), ipaH/ial (31) and ipaH/ial/sen positive (1), respectively. The drug resistance spectrum showed that 9 of 14 antibiotics were 100% resistant, and only imipenem, chloramphenicol, ceftazidime and ciprofloxacin were effective drugs. XbaⅠ restriction enzyme map type of 36 isolates was completely consistent, and the ST type analysis of 3 strains was ST152. Whole genome sequencing and analysis verified that the outbreak was caused by a single clonal group of strains, and revealed that the isolates of the outbreak were clustered into a large cluster with 3 Chinese strains and 1 Korean strain in the database, far away from the strains of other countries. Conclusion: The outbreak is caused by a single clone of Shigella sonnei, which are low virulence strains and have multiple drug resistance.
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Affiliation(s)
- J Liu
- Microbiological Laboratory, Huainan City Center for Disease Control and Prevention, Huainan 232033, China
| | - Y Sun
- Microbiological laboratory, Anhui Provincial Center for Disease Control and Prevention, Hefei 230601, China
| | - F R Zhang
- Microbiological Laboratory, Huainan City Center for Disease Control and Prevention, Huainan 232033, China
| | - X P Zeng
- Microbiological Laboratory, Huainan City Center for Disease Control and Prevention, Huainan 232033, China
| | - L J Wang
- Microbiological Laboratory, Huainan City Center for Disease Control and Prevention, Huainan 232033, China
| | - M Y Zhu
- Microbiological Laboratory, Huainan City Center for Disease Control and Prevention, Huainan 232033, China
| | - S J Sun
- Microbiological Laboratory, Huainan City Center for Disease Control and Prevention, Huainan 232033, China
| | - Shoujie Yu
- Microbiological Laboratory, Huainan City Center for Disease Control and Prevention, Huainan 232033, China
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Zhang C, Xiang JJ, Zhao J, Meng YL, Zhang FR, Jin Z, Shaw PC, Liu XP, Hu C. Design, synthesis, and biological activity of a novel series of 2-ureidonicotinamide derivatives against influenza A virus. Curr Med Chem 2022; 29:4610-4627. [PMID: 35209813 DOI: 10.2174/0929867329666220224114627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 01/01/2022] [Accepted: 01/07/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Viral resistance to existing inhibitors and the time-dependent effectiveness of neuraminidase inhibitors have limited the number of antivirals that can be used for prophylaxis and therapeutic treatment of severe influenza infection. Thus, there is an urgent need to develop new drugs to prevent and treat influenza infection. OBJECTIVE The aim of this study was to design and synthesize a novel series of 2-ureidonicotinamide derivatives, and evaluate their anti-IAV activities. Furthermore, we predicted the abilities of these compounds inhibiting PA-PB1 subunit and forecasted the docking poses of these compounds with RNA polymerase protein (PDB ID 3CM8). METHOD The novel designed compounds were synthesized using classical methods of organic chemistry and tested in vitro for their abilities inhibiting RNP and against influenza A virus. In addition, the 23 synthesized molecules were subjected to the generated pharmacophore Hypo1 to forecast the activity target PA-PB1 subunit of RNA polymerase. The ADMET pharmacokinetic parameters were calculated by the ADMET modules in Discovery Studio 2016. The docking results helped us to demonstrate the possible interactions between these compounds with 3CM8. RESULTS The synthesized 2-ureidonicotinamide derivatives were characterized as potent anti-influenza inhibitors. The target compounds 7b and 7c demonstrated significant antiviral activities, and could be considered as novel lead compounds of antiviral inhibitors. In addition, compound 7b revealed suitable ADME properties expressed, and might be a significant RNA polymerase inhibitor targeting PA-PB1 subunit based on the predictable results and the docking results. CONCLUSION This study revealed a novel series of compounds that might be useful in the search for an effective drug against influenza virus.
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Affiliation(s)
- Chao Zhang
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jun-Jie Xiang
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jing Zhao
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yan-Li Meng
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Fu-Rong Zhang
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Zhe Jin
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Pang-Chui Shaw
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiao-Ping Liu
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Chun Hu
- Key Laboratory of Structure-based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
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Abstract
BACKGROUND The clinical characteristics and outcome of COVID-19 in children are different from those in adults. We aimed to describe the characteristics of infants under 1 year of age (excluding newborns) with COVID-19. METHODS We retrospectively retrieved data of 36 infants with SARS-CoV-2 infection in Wuhan Children's Hospital from January 26 to March 22, 2020. Clinical features, chest imaging findings, laboratory tests results, treatments and clinical outcomes were analyzed. RESULTS The mean age of the infected infants was 6.43 months, with a range of 2-12 months. 61.11% of the patients were males and 38.89% females. 86.11% of the infants were infected due to family clustering. Cough (77.78%) and fever (47.22%) were the most common clinical manifestations. Chest CT scan revealed 61.11% bilateral pneumonia and 36.11% unilateral pneumonia. 47.22% of the infants developed complications. Increased leucocytes, neutrophils, lymphocytes, and thrombocytes were observed in 11.11, 8.33, 36.11 and 44.44% of infants, respectively. Decreased leucocytes, neutrophils, thrombocyte and hemoglobin were observed in 8.33, 19.44, 2.78 and 36.11% of infants, respectively. Increased C-reactive protein, procalcitonin, lactate dehydrogenase, alanine aminotransferase, creatine kinase and D-dimer were observed in 19.44, 67.74, 47.22, 19.44, 22.22 and 20.69% of infants, respectively. Only one infant had a high level of creatinine. Co-infections with other respiratory pathogens were observed in 62.86% of infants. CD3 (20.69%), CD4 (68.97%), CD19 (31.03%) and Th/Ts (44.83%) were elevated; CD8 (6.9%) and CD16+CD56 (48.28%) was reduced. IL-4 (7.69%), IL-6 (19.23%), IL-10 (50%), TNF-α (11.54%) and IFN-γ (19.23%) were elevated. Up to March 22, 97.22% of infants recovered, while a critical ill infant died. When the infant's condition deteriorates rapidly, lymphocytopenia was discovered. Meanwhile, C-reactive protein, D-dimer, alanine aminotransferase, creatine kinase, creatinine, IL-6 and IL-10 increased significantly. CONCLUSIONS In the cohort, we discovered that lymphocytosis, elevated CD4 and IL-10, and co-infections were common in infants with COVID-19, which were different from adults with COVID-19. Most infants with COVID-19 have mild clinical symptoms and good prognosis.
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Affiliation(s)
- Dan Sun
- Department of Neurology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Institute of Maternal and Child Health, Wuhan Children's Hospital, Tongji Medical College, Huazhong University and Technology, Wuhan, China
| | - Xue Chen
- Department of Neurology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hui Li
- Department of Hematology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
| | - Xiao-Xia Lu
- Department of Respiratory Diseases, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Han Xiao
- Institute of Maternal and Child Health, Wuhan Children's Hospital, Tongji Medical College, Huazhong University and Technology, Wuhan, China
| | - Fu-Rong Zhang
- Department of Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi-Sheng Liu
- Department of Neurology, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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Chen F, Liu ZS, Zhang FR, Xiong RH, Chen Y, Cheng XF, Wang WY, Ren J. [First case of severe childhood novel coronavirus pneumonia in China]. Zhonghua Er Ke Za Zhi 2020; 58:179-182. [PMID: 32135586 DOI: 10.3760/cma.j.issn.0578-1310.2020.03.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- F Chen
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - Z S Liu
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - F R Zhang
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - R H Xiong
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - Y Chen
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - X F Cheng
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - W Y Wang
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - J Ren
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
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Chen F, Liu ZS, Zhang FR, Xiong RH, Chen Y, Cheng XF, Wang WY, Ren J. [First case of severe childhood novel coronavirus pneumonia in China]. Zhonghua Er Ke Za Zhi 2020; 58:E005. [PMID: 32045966 DOI: 10.3760/cma.j.issn.0578-1310.2020.0005] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- F Chen
- Intensive Care Unit, Wuhan Children's Hospital , Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - Z S Liu
- Intensive Care Unit, Wuhan Children's Hospital , Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - F R Zhang
- Intensive Care Unit, Wuhan Children's Hospital , Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - R H Xiong
- Intensive Care Unit, Wuhan Children's Hospital , Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - Y Chen
- Intensive Care Unit, Wuhan Children's Hospital , Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - X F Cheng
- Intensive Care Unit, Wuhan Children's Hospital , Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - W Y Wang
- Intensive Care Unit, Wuhan Children's Hospital , Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
| | - J Ren
- Intensive Care Unit, Wuhan Children's Hospital , Tongji Medical College, Huazhong University of Science & Technology, Wuhan 430016, China
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Mei YQ, Wei LF, Zou LS, Liu XH, Li JS, Chen JL, Tan MX, Wang CC, Cai ZC, Zhang FR. [Analysis and evaluation of dynamic accumulation of multiple bioactive constituents in Spatholobi Caulis]. Zhongguo Zhong Yao Za Zhi 2020; 45:584-595. [PMID: 32237517 DOI: 10.19540/j.cnki.cjcmm.20191107.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A method was established for simultaneous determination of 21 active constituents including flavanols, isoflavones, flavonols, dihydroflavones, dihydroflavonols, chalcones, pterocarpan, anthocyanidins and phenolic acids in Spatholobi Caulis by ultra fast liquid chromatography with triple quadrupole linear ion trap mass spectrometry(UFLC-QTRAP-MS/MS). Then, it was employed to analyze and evaluate the dynamic accumulation of multiple bioactive constituents in Spatholobi Caulis. The chromatographic separation was performed on a XBridge®C_(18)(4.6 mm×100 mm, 3.5 μm) at 30 ℃ with a gradient elution of 0.3% formic acid aqueous solution-methanol, and the flow rate was 0.8 mL·min~(-1), using multiple-reaction monitoring(MRM) mode. A comprehensive evaluation of the multiple bioactive constituents was carried out by gray correlation analysis(GRA). The 21 target components showed good linearity(r>0.999 0) in the range of the tested concentrations. The average recovery rates of the 21 components were from 97.46% to 103.6% with relative standard deviations less than 5.0%. There were differences in the contents of 21 components in Spatholobi Caulis at diffe-rent harvest periods. Spatholobi Caulis had high quality from early November to early December, which is consistent with the local tradi-tional harvest period. This study reveals the rule of the dynamic accumulation of 21 components in Spatholobi Caulis and provides basic information for the suitable harvest time. At the same time, it provides a new method reference for the comprehensive evaluation of the internal quality of Spatholobi Caulis.
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Affiliation(s)
- Yu-Qi Mei
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Li-Fang Wei
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Li-Si Zou
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Xun-Hong Liu
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Jun-Sheng Li
- Gongcheng Yao Autonomous County Hospital of Traditional Chinese Medicine Guilin 542500, China
| | - Jia-Li Chen
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Meng-Xia Tan
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Cheng-Cheng Wang
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Zhi-Chen Cai
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
| | - Fu-Rong Zhang
- School of Pharmacy, Nanjing University of Chinese Medicine Nanjing 210023, China
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Peng WW, Tang ZY, Zhang FR, Li H, Kong YZ, Iannetti GD, Hu L. Neurobiological mechanisms of TENS-induced analgesia. Neuroimage 2019; 195:396-408. [PMID: 30946953 PMCID: PMC6547049 DOI: 10.1016/j.neuroimage.2019.03.077] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 03/12/2019] [Accepted: 03/30/2019] [Indexed: 12/30/2022] Open
Abstract
Pain inhibition by additional somatosensory input is the rationale for the widespread use of Transcutaneous Electrical Nerve Stimulation (TENS) to relieve pain. Two main types of TENS produce analgesia in animal models: high-frequency (∼50-100 Hz) and low-intensity 'conventional' TENS, and low-frequency (∼2-4 Hz) and high-intensity 'acupuncture-like' TENS. However, TENS efficacy in human participants is debated, raising the question of whether the analgesic mechanisms identified in animal models are valid in humans. Here, we used a sham-controlled experimental design to clarify the efficacy and the neurobiological effects of 'conventional' and 'acupuncture-like' TENS in 80 human volunteers. To test the analgesic effect of TENS we recorded the perceptual and brain responses elicited by radiant heat laser pulses that activate selectively Aδ and C cutaneous nociceptors. To test whether TENS has a long-lasting effect on brain state we recorded spontaneous electrocortical oscillations. The analgesic effect of 'conventional' TENS was maximal when nociceptive stimuli were delivered homotopically, to the same hand that received the TENS. In contrast, 'acupuncture-like' TENS produced a spatially-diffuse analgesic effect, coupled with long-lasting changes both in the state of the primary sensorimotor cortex (S1/M1) and in the functional connectivity between S1/M1 and the medial prefrontal cortex, a core region in the descending pain inhibitory system. These results demonstrate that 'conventional' and 'acupuncture-like' TENS have different analgesic effects, which are mediated by different neurobiological mechanisms.
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Affiliation(s)
- W W Peng
- College of Psychology and Sociology, Shenzhen University, Shenzhen, China
| | - Z Y Tang
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - F R Zhang
- Research Center of Brain Cognitive Neuroscience, Liaoning Normal University, Dalian, China
| | - H Li
- College of Psychology and Sociology, Shenzhen University, Shenzhen, China
| | - Y Z Kong
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - G D Iannetti
- Neuroscience and Behaviour Laboratory, Istituto Italiano di Tecnologia, Rome, Italy; Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK
| | - L Hu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China; Department of Psychology, University of Chinese Academy of Sciences, Beijing, China; Department of Neuroscience, Physiology and Pharmacology, University College London, London, UK; Department of Pain Management, The State Key Clinical Specialty in Pain Medicine, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
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11
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Cai XF, Zhang FR, Zhang L, Sun JM, Li WB. [Efficacy of analgesic and sedative treatments in children with mechanical ventilation in the pediatric intensive care unit]. Zhongguo Dang Dai Er Ke Za Zhi 2017; 19:1138-1144. [PMID: 29132458 PMCID: PMC7389320 DOI: 10.7499/j.issn.1008-8830.2017.11.003] [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] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 07/21/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To compare the efficacy and safety of different analgesic and sedative treatments in children with mechanical ventilation in the pediatric intensive care unit (PICU). METHODS Eighty children with mechanical ventilation in the PICU who needed analgesic and sedative treatments were equally and randomly divided into midazolam group and remifentanil+midazolam group. The sedative and analgesic effects were assessed using the Ramsay Scale and the Face, Legs, Activity, Cry and Consolability (FLACC) Scale. The following indices were recorded for the two groups: vital signs, ventilator parameters, organ function, total doses of remifentanil and midazolam, duration of mechanical ventilation, length of PICU stay, PICU cost, and incidence of adverse events. RESULTS Satisfactory sedation was achieved in the two groups, but the remifentanil+midazolam group had a significantly shorter time to analgesia and sedation than the midazolam group. The remifentanil+midazolam group had a significantly higher percentage of patients with grade 3-4 on the Ramsay Scale and a significantly lower dose of midazolam than the midazolam group (P<0.05). Both groups showed decreases in heart rate (HR), mean arterial pressure (MAP), and spontaneous breathing frequency (RRs) after treatment. However, the remifentanil+midazolam group had significantly greater decreases in HR at 3-24 hours after treatment and MAP and RRs at 3-12 hours after treatment than the midazolam group (P<0.05). Compared with the midazolam group, the remifentanil+midazolam group had significantly higher ventilator tidal volume and transcutaneous oxygen saturation at 6 and 12 hours after treatment and significantly lower end-tidal carbon dioxide partial pressure at 6 and 12 hours after treatment (P<0.05). The remifentanil+midazolam group had significantly shorter time to awake, extubation time, duration of mechanical ventilation, and length of PICU stay than the midazolam group (P<0.05). There were no significant differences in PICU cost, incidence of adverse events, and hepatic and renal functions before and after treatment between the two groups (P>0.05). Both groups showed a significant decrease in fasting blood glucose level after treatment (P<0.05). CONCLUSIONS For children with mechanical ventilation in the PICU, remifentanil+midazolam treatment can rapidly achieve analgesia and sedation, improve the effect of mechanical ventilation, and reduce the dose of sedative compared with midazolam alone, and is well tolerated.
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Affiliation(s)
- Xiao-Fang Cai
- Intensive Care Unit, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430016, China.
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12
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Zhang FR, Zhang RQ, He L, Yin JW, Yang MQ. Multidisciplinary management to decrease perioperative complications in senile patients with hypoxaemia in high altitudes during primary hip arthroplasty: data from our cohort study. Br J Anaesth 2016; 117:828-829. [PMID: 27956686 DOI: 10.1093/bja/aew369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Cui YX, Yang BQ, Zhou GZ, Zhang FR. Childhood linear IgA bullous dermatosis successfully treated with oral nicotinamide. Clin Exp Dermatol 2016; 41:816-8. [PMID: 27663162 DOI: 10.1111/ced.12892] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/05/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Y X Cui
- Shandong Clinical College of Skin Diseases, Anhui Medical University, Jinan, PR, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Provincial Academy of Medical Science, Jinan, PR, China.,Shandong Provincial Hospital for Skin Diseases, Jinan, PR, China.,Department of Dermatology, People's Hospital of Shouguang, Weifang, PR, China
| | - B Q Yang
- Shandong Clinical College of Skin Diseases, Anhui Medical University, Jinan, PR, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Provincial Academy of Medical Science, Jinan, PR, China.,Shandong Provincial Hospital for Skin Diseases, Jinan, PR, China
| | - G Z Zhou
- Shandong Provincial Institute of Dermatology and Venereology, Shandong Provincial Academy of Medical Science, Jinan, PR, China.,Shandong Provincial Hospital for Skin Diseases, Jinan, PR, China
| | - F R Zhang
- Shandong Clinical College of Skin Diseases, Anhui Medical University, Jinan, PR, China. .,Shandong Provincial Institute of Dermatology and Venereology, Shandong Provincial Academy of Medical Science, Jinan, PR, China. .,Shandong Provincial Hospital for Skin Diseases, Jinan, PR, China.
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14
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Fang Y, Zhang FR, Chang XY. [Analyse coal workers' pneumoconiosis deaths reported in Beijing since 1997 to 2014]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:664-666. [PMID: 27866542 DOI: 10.3760/cma.j.issn.1001-9391.2016.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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15
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Fa Y, Lin Y, Chi XJ, Shi WH, Wang JL, Guo X, Geng JH, Liu HX, Zhang FR. Treatment of vitiligo with 308-nm excimer laser: our experience from a 2-year follow-up of 979 Chinese patients. J Eur Acad Dermatol Venereol 2016; 31:337-340. [PMID: 27538097 DOI: 10.1111/jdv.13917] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 07/18/2016] [Indexed: 11/30/2022]
Abstract
BACKGROUND The 308-nm excimer laser had been proved to be a time-efficient and potent therapeutic alternative for the management of vitiligo. Different results had been reported in different ethnic populations. OBJECTIVE To investigate the efficacy and related contributing factors of 308-nm excimer laser in Chinese vitiligo patients. METHODS A total of 979 Chinese patients (3478 lesions) with progressive-stage vitiligo who had received 308-nm excimer laser treatment were recruited from the vitiligo clinic of Shandong Provincial Hospital of Dermatology &Venereology from 2012 to 2014. Efficacy of treatment was evaluated at the end of session by two independent dermatologists based on the before and after images taken. Repigmentation was graded on a 4-point scale: grade 1, poor repigmentation (0-25%); grade 2, moderate repigmentation (26-50%); grade 3, good repigmentation (51-75%); grade 4, excellent repigmentation (76-100%). RESULTS The mean grade of repigmentation was 2.29, 44.22% showed less than 25% repigmentation, 16.27% showed 26-50% repigmentation, 5.95% showed 51-75% repigmentation and 33.55% showed more than 76% repigmentation. The repigmentation of facial lesions was better than lesions located elsewhere (P < 0.0001), the best response was noted in the periorbital region, while lesions on hands and feet showed poor repigmentation (P < 0.0001). The degree of repigmentation was negatively correlated with disease duration (r = -0.268, P < 0.001), age (r = -0.095, P < 0.001) and shape of lesions (r = -0.114, P < 0.001), whereas it was positively correlated with treatment frequency (r = 0.270, P < 0.001). Lesions with concurrent poliosis were more likely resistant to treatments. CONCLUSION 308-nm excimer laser appears to be an effective and safe treatment in Chinese vitiligo patients. The clinical response and treatment efficacy was affected by many factors such as age, affected anatomical area, shape of the lesion, disease duration and treatment frequencies.
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Affiliation(s)
- Y Fa
- Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, Jinan, Shandong, China.,School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, Shandong, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China
| | - Y Lin
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Medical Center for Dermatovenereology, Jinan, Shandong, China
| | - X J Chi
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, Shandong, China.,Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China
| | - W H Shi
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, Shandong, China.,Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China
| | - J L Wang
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Medical Center for Dermatovenereology, Jinan, Shandong, China
| | - X Guo
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Medical Center for Dermatovenereology, Jinan, Shandong, China
| | - J H Geng
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Medical Center for Dermatovenereology, Jinan, Shandong, China
| | - H X Liu
- Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, Jinan, Shandong, China.,Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Medical Center for Dermatovenereology, Jinan, Shandong, China
| | - F R Zhang
- Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, Jinan, Shandong, China.,School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan, Shandong, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China.,Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China
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16
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Yan XX, Yu CP, Fu XA, Bao FF, Du DH, Wang C, Wang N, Wang SF, Shi ZX, Zhou GZ, Tian HQ, Liu H, Zhang FR. CARD9 mutation linked to Corynespora cassiicola infection in a Chinese patient. Br J Dermatol 2015; 174:176-9. [PMID: 26440558 DOI: 10.1111/bjd.14082] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2015] [Indexed: 12/12/2022]
Abstract
Corynespora cassiicola is a plant pathogen associated with leaf-spotting disease. The fungus has been found on diverse substrates: leaves, stems and roots of plants; nematode cysts and human skin. It rarely causes human infections. Here we report one case of subcutaneous phaeohyphomycosis caused by C. cassiicola with prominent tissue necrosis in a woman. All of her clinical features pointed towards a genetic linkage. Hence, whole-exome sequencing and Sanger sequencing were performed on this patient. One mutation of CARD9 was detected.
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Affiliation(s)
- X X Yan
- Shandong Clinical College of Skin Diseases, Anhui Medical University, Jinan, Shandong, China.,Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China
| | - C P Yu
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China
| | - X A Fu
- Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China
| | - F F Bao
- Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China
| | - D H Du
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China
| | - C Wang
- Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China
| | - N Wang
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China
| | - S F Wang
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China
| | - Z X Shi
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China
| | - G Z Zhou
- Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China
| | - H Q Tian
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China.,National Clinical Key Project of Dermatology and Venereology, Jinan, Shandong, China
| | - H Liu
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China.,National Clinical Key Project of Dermatology and Venereology, Jinan, Shandong, China
| | - F R Zhang
- Shandong Clinical College of Skin Diseases, Anhui Medical University, Jinan, Shandong, China.,Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China.,Shandong Provincial Institute of Dermatology and Venereology, Shandong Academy of Medical Sciences, 27397 Jingshi Road, Jinan, Shandong, 250022, China.,Shandong Provincial Key Lab for Dermatovenereology, Jinan, Shandong, China.,National Clinical Key Project of Dermatology and Venereology, Jinan, Shandong, China
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17
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Abstract
We have previously found that an imbalance of Tc1/Tc2 T cell subtypes in vivo impacts the development of photodermatitis. The aim of this study was to investigate the relationship between cytokines derived from keratinocytes exposure to UV and the imbalance of Th subgroups. We used different doses of UVA and UVB to irradiate HaCaT cells. Twelve hours after irradiation, the expression of IL-10R, IL-4R, IL-12R, and IFN-γR proteins was observed using the S-P method, and the percentage of positive cells calculated. Protein levels of the respective ligands in the supernatant was measured by ELISA. Our results showed low levels of expression of the interrogated proteins in unirradiated HaCaT cells, and little or no expression could be detected in the supernatant. Little or no expression was also observed for IL-12R and IFN-γR 12 h after UVA or UVB irradiation. However, the expression of IL-10R and IL-10 was upregulated 12 h following UVB irradiation, as well as following lower dose UVA irradiation. In contrast, higher dose UVA decreased the expression of IL-10R and IL-10. The expression of IL-4R was increased following high doses of UVA and UVB irradiation, whereas no expression was observed after lower dose UV exposure. There was no change in IL-4 secretion into the supernatant. Our results demonstrate that the effects of UV exposure on keratinocyte-derived cytokines are different according to the doses of irradiation and the types of cytokines, and suggest that keratinocyte-derived cytokines after UV exposure might cause an imbalance of Th1/Th2.
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Affiliation(s)
- H Y Li
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China
| | - F R Zhang
- Shandong Provincial Hospital for Skin Diseases, Shandong University, Jinan, Shandong, China
| | - D Q Deng
- Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
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18
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Wang AN, Cai CJ, Zeng XF, Zhang FR, Zhang GL, Thacker PA, Wang JJ, Qiao SY. Dietary supplementation with Lactobacillus fermentum I5007 improves the anti-oxidative activity of weanling piglets challenged with diquat. J Appl Microbiol 2013; 114:1582-91. [PMID: 23480628 DOI: 10.1111/jam.12188] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 03/01/2013] [Accepted: 03/01/2013] [Indexed: 12/31/2022]
Abstract
AIMS To determine the effects of Lactobacillus fermentum I5007 on the redox state of piglets oxidatively stressed with diquat. METHODS AND RESULTS Twenty-four, 28-day-old barrows were used in a 2 × 2 factorial design experiment with the main effects being Lact. fermentum supplementation and diquat challenge. Half of the pigs (n = 12) were orally administered with 20 ml of a solution containing 10(8 ) CFU ml(-1) of Lact. fermentum each morning of the 21-day trial, while the remainder received saline. On day 8, these two groups were further subdivided so that half of the pigs in each group (n = 6) were intraperitoneally injected with 10 mg kg(-1) BW diquat, while the remainder received saline. The diquat-injected pigs had significantly poorer performance and increased levels of plasma cortisol, adrenaline, carbonyl and malondialdehyde. Lactobacillus fermentum supplementation significantly increased superoxide dismutase and glutathione and increased the ability to inhibit superoxide anion production in liver and muscle. CONCLUSIONS Lactobacillus fermentum improved the anti-oxidative defence system and alleviated damage caused by diquat. SIGNIFICANCE AND IMPACT OF THE STUDY Lactobacillus fermentum has the potential to alleviate oxidative stress and improve weaning pig performance.
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Affiliation(s)
- A N Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China; Weifang Business Vocational College, Zhucheng, China
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19
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Zhang FR, Zhang Y, Zhang ZY, Yang GL, Jing LJ, Bai YG. Analysis of the differentially expressed genes in Microsporum canis in inducing smooth skin and scalp tissue conditions. Clin Exp Dermatol 2011; 36:896-902. [PMID: 21883399 DOI: 10.1111/j.1365-2230.2011.04157.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Microsporum canis is a common zoophilic dermatophyte, which causes a range of infections. To explore the pathogenic mechanism of tinea capitis, we used the suppression subtractive hybridization (SSH) technique to investigate the differences in gene expression between different cultures of Microsporum canis incubated on three different types of mineral media containing child glabrous skin, child scalp tissue and adult scalp tissue. Using dot-blot hybridization and real-time PCR technique, we successfully screened and identified a pair of genes that had expression levels 44.6 and 117 times higher in culture 1 (M. canis cultured in mineral medium with child scalp tissue) than in culture 2 (M. canis cultured in mineral medium with glabrous skin tissue), and another pair of genes with expression levels 78.2 and 9.8 times higher in culture 1 than in culture 3 (M. canis cultured in mineral medium with adult scalp tissue). These four genes were found to have 41%, 53%, 40% and 94% homology to those encoding a hypothetical protein [family of serine hydrolases 1; (FSH1)], PQ loop repeat protein (PQ-LRP), a predicted protein [porphyrin galactose 4; (P-GAL4)] and NADH dehydrogenase subunit (NADH)1, respectively. The upregulation of the FSH1, PQ-LRP, P-GAL4 and NADH1 genes in cultures of child scalp tissue indicates that they are essential in the pathogenesis of tinea capitis caused by M. canis.
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Affiliation(s)
- F R Zhang
- Department of Dermatology, the First Affiliated Hospital of Dalian Medical University, Dalian, China
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20
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Zhang HZ, Tian HQ, Du DH, Wang GJ, Yan XX, Liu H, Zhou GZ, Fu XA, Yu YX, Yu GQ, Liu HX, Zhang FR. Analysis of ATP2C1 gene mutations in Chinese patients with Hailey-Hailey disease. Clin Exp Dermatol 2011; 37:190-3. [PMID: 21883398 DOI: 10.1111/j.1365-2230.2011.04155.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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21
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Hu XS, Du CQ, Zeng CL, Yao L, Zhang FR, Wang K, Chen JZ, Li N, Hu H. Systemic evaluation of platelet and leukocyte activation and interaction in a rat model of pulmonary arterial hypertension. Cardiology 2011; 117:44-53. [PMID: 20924177 DOI: 10.1159/000320107] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Accepted: 07/22/2010] [Indexed: 11/19/2022]
Abstract
OBJECTIVES Thrombosis and inflammation are associated with the pathogenesis of pulmonary arterial hypertension (PAH). However, there are no solid data supporting the involvement of platelet and leukocyte activation and interaction in PAH. The present study thus investigated the activation and interaction of circulating platelets and leukocytes in a rat model of monocrotaline (MCT)-induced pulmonary hypertension. METHODS Mean pulmonary arterial pressure (mPAP) was monitored in rats (n = 24) before and 2, 3 and 7 weeks after MCT (60 mg/kg)injection. In parallel, activation of circulating platelets and leukocytes and platelet-leukocyte aggregates were measured by whole-blood flow cytometry. RESULTS Two weeks after MCT injection, mPAP had increased significantly, i.e. from 11.25 ± 0.92 mm Hg at baseline to 15.71 ± 1.66 mm Hg (p < 0.05), and it had increased even further at week 7 (26.83 ± 3.29 mm Hg; p < 0.01). Fibrinogen binding of circulating platelets had increased from the basal level of 1.45 ± 0.61 to 4.08 ± 1.59% 3 weeks after MCT injection (p < 0.01). Platelet responsiveness to ADP was also significantly enhanced. CD11b expression of circulating neutrophils was elevated; i.e. mean fluorescence intensity increased from 1.67 ± 0.38 before MCT injection to 2.37 ± 0.31 3 weeks after MCT injection (p < 0.01), and N-formyl-methionyl-leucyl-phenylalanine (1 × 10⁻⁷M) stimulation induced more marked elevation of neutrophil CD11b expression in MCT-treated animals. Circulating platelet-neutrophil aggregates were already increased 2 weeks after MCT treatment (14.93 ± 4.22%; p < 0.01) compared to baseline (6.01 ± 2.91%) and remained elevated at 3 weeks (15.19 ± 4.78%; p < 0.01). CONCLUSIONS MCT-induced PAH in rats is associated with increased platelet and leukocyte activation and platelet-leukocyte interaction in vivo, which may play an important role in the pathogenesis of PAH.
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Affiliation(s)
- Xiao-Sheng Hu
- Department of Cardiology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, PR China
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22
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Wang XX, Zhang FR, Zhu JH, Xie XD, Chen JZ. Up-Regulation of CXC Chemokine Receptor 4 Expression in Chronic Atrial Fibrillation Patients with Mitral Valve Disease May Be Attenuated by Renin–Angiotensin System Blockers. J Int Med Res 2009; 37:1145-51. [PMID: 19761697 DOI: 10.1177/147323000903700419] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study characterized CXC chemokine receptor 4 (CXCR4) expression in patients with mitral valve disease and chronic atrial fibrillation (AF). Forty-eight patients with chronic AF formed two groups based on whether they were treated with or without renin–angiotensin system (RAS) blockers (AF + RAS group; n = 25, or AF – RAS group; n = 23). The controls comprised 17 mitral valve disease patients with sinus rhythm (SR group). CXCR4 mRNA and protein levels in the left atria were significantly higher in the AF – RAS and AF + RAS groups than in the SR group. CXCR4 expression was significantly lower in the AF + RAS group than the AF – RAS group. More CD34+ cells expressed CXCR4 in the AF – RAS and AF + RAS groups than in the SR group. Angiotensin II, collagen I and left atrial diameter significantly positively correlated with CXCR4 expression in the AF – RAS group. These results suggest that CXCR4 expression is up-regulated in chronic AF patients with mitral valve disease, is associated with atrial remodelling, and that these effects are attenuated by RAS blockers.
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Affiliation(s)
- XX Wang
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - FR Zhang
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - JH Zhu
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - XD Xie
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
| | - JZ Chen
- Department of Cardiology, The First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
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Wang ZP, Tang YL, Zhang FR, Liu Y. [The self intensification of the pure spectrum in the mixed spectrum]. Guang Pu Xue Yu Guang Pu Fen Xi 2009; 29:1946-1949. [PMID: 19798978] [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: 05/28/2023]
Abstract
In the present paper, the influence of the pure spectrum contained in the mixed spectrum was centralized at the origin, and in this way, the influence of the pure spectrum in the result curve reached the maximum value. This process is called the self intensification of the pure spectrum. Farther, considering that the center of the Gaussian function contained in the impure spectrum is much different from that of the pure spectrum, it can be accepted that the influence of the impure spectrum at the origin is approximately the minimum. So the origin was chosen as the analysis point when the authors perform the quantitative analysis according to the spectrum. Therefore we can reduce the subjectivity in choosing the analysis point. In addition, the wavelet coefficients of the result curve at the origin were used for the quantitative analysis. According to the simulated experiment, it was found that the final result is independent of the Gaussian white noise contained in the actual spectrum. Finally, the analytic result of the new method was compared with that of the method reported in the literature, which proved that the new method is much better in terms of the analytic error.
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Affiliation(s)
- Zhi-Ping Wang
- College of Science, Guizhou University, Guiyang 550025, China.
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Lv YM, Yang S, Zhang Z, Cui Y, Quan C, Zhou FS, Fang QY, Du WH, Zhang FR, Chang JM, Tao XP, Zhang AL, Kang RH, Du WD, Zhang XJ. Novel and recurrent keratin 6A (KRT6A) mutations in Chinese patients with pachyonychia congenita type 1. Br J Dermatol 2009; 160:1327-9. [PMID: 19416275 DOI: 10.1111/j.1365-2133.2009.09062.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Y M Lv
- Institute of Dermatology and Department of Dermatology at the First Hospital, Anhui Medical University, Hefei, China
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Xia L, Fu GS, Yang JX, Zhang FR, Wang XX. Endothelial progenitor cells may inhibit apoptosis of pulmonary microvascular endothelial cells: new insights into cell therapy for pulmonary arterial hypertension. Cytotherapy 2009; 11:492-502. [DOI: 10.1080/14653240902960460] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xia L, Wang XX, Hu XS, Guo XG, Shang YP, Chen HJ, Zeng CL, Zhang FR, Chen JZ. Resveratrol reduces endothelial progenitor cells senescence through augmentation of telomerase activity by Akt-dependent mechanisms. Br J Pharmacol 2008; 155:387-94. [PMID: 18587418 DOI: 10.1038/bjp.2008.272] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND AND PURPOSE Recent studies have shown that resveratrol increased endothelial progenitor cells (EPCs) numbers and functional activity. However, the mechanisms remain to be determined. Previous studies have demonstrated that increased EPC numbers and activity were associated with the inhibition of EPC senescence, which involves activation of telomerase. Therefore, we investigated whether resveratrol inhibits the onset of EPC senescence through telomerase activation, leading to potentiation of cellular activity. EXPERIMENTAL APPROACH After prolonged in vitro cultivation, EPCs were incubated with or without resveratrol. The senescence of EPCs were determined by acidic beta-galactosidase staining. The bromo-deoxyuridine incorporation assay or a modified Boyden chamber assay were employed to assess proliferative or migratory capacity, respectively. To further examine the underlying mechanisms of these effects, we measured telomerase activity and the phosphorylation of Akt by western blotting. KEY RESULTS Resveratrol dose dependently prevented the onset of EPCs senescence and increased the proliferation and migration of EPCs. The effect of resveratrol on senescence could not be abolished by eNOS inhibitor or by an oestrogenic receptor antagonist. Resveratrol significantly increased telomerase activity and Akt phosphorylation. Pre-treatment with the PI3K inhibitor, LY294002, significantly attenuated resveratrol-induced telomerase activity. CONCLUSIONS AND IMPLICATIONS Resveratrol delayed the onset of EPC senescence and this effect was accompanied by activation of telomerase through the PI3K-Akt signalling pathway. The inhibition of EPCs senescence by resveratrol might protect EPCs against dysfunction induced by pathological factors in vivo and improve EPC functional activities in a way that may be important for cell therapy.
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Affiliation(s)
- L Xia
- Department of Cardiovascular Diseases, the First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, PR China
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Wang XX, Zhang FR, Shang YP, Zhu JH, Xie XD, Tao QM, Zhu JH, Chen JZ. Transplantation of autologous endothelial progenitor cells may be beneficial in patients with idiopathic pulmonary arterial hypertension: a pilot randomized controlled trial. J Am Coll Cardiol 2007; 49:1566-71. [PMID: 17418297 DOI: 10.1016/j.jacc.2006.12.037] [Citation(s) in RCA: 248] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2006] [Revised: 12/06/2006] [Accepted: 12/08/2006] [Indexed: 02/07/2023]
Abstract
OBJECTIVES The goal of this study was to investigate the feasibility, safety, and initial clinical outcome of intravenous infusion of autologous endothelial progenitor cells (EPCs) in patients with idiopathic pulmonary arterial hypertension (IPAH). BACKGROUND Experimental data suggest that transplantation of EPCs attenuates monocrotaline-induced pulmonary hypertension in rats and dogs. In addition, clinical studies suggest that autologous progenitor cell transplantation is feasible and safe in patients with ischemic diseases. METHODS We conducted a prospective, randomized trial comparing the effects of EPC transplantation plus conventional therapy with those of conventional therapy alone in patients with IPAH. The primary end point was change in the 6-min walk distance using a standardized protocol. The secondary end points were changes in hemodynamic variables as assessed by right heart catheterization. RESULTS After 12 weeks of follow-up, the mean distance walked in 6 min increased by 48.2 m in the cell infusion group (from 263 +/- 42 m to 312 +/- 34 m), and an increase of 5.7 m occurred in the conventional therapy group (from 264 +/- 42 m to 270 +/- 44 m). The mean difference between the 2 groups was 42.5 m (95% confidence interval 28.7 to 56.3 m, p < 0.001). The patients in the cell infusion group also had significant improvement in mean pulmonary artery pressure, pulmonary vascular resistance, and cardiac output. There were no severe adverse events with cell infusion. CONCLUSIONS This preliminary study showed that intravenous infusion of autologous EPCs seemed to be feasible and safe, and might have beneficial effects on exercise capacity and pulmonary hemodynamics in patients with IPAH. (Safety and Efficacy Study of Transplantation of EPCs to Treat Idiopathic Pulmonary Arterial Hypertension; http://www.clinicaltrials.gov/ct/show/NCT00257413?order=1; NCT00257413).
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Affiliation(s)
- Xing-Xiang Wang
- Department of Cardiology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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Abstract
The study was aimed at determining the incidence of changes in sexual function and identifying the possible associated variables of erectile dysfunction (ED) in coronary artery disease (CAD) patients undergoing coronary stenting. Four hundred and sixty-seven patients were retrospectively contacted with a questionnaire regarding sexual function from 6 months pre-stenting to 6 months post-stenting by telephone follow up. Univariate analyses were used to determine prognostic variables. ED changed following stenting in CAD (P < 0.05), in acute coronary syndrome (ACS) (P > 0.05) and in chronic coronary syndrome (CCS) (P < 0.05). Sexual activity was not resumed in 8.1%, was unchanged in 33.8%, increased in 0% and decreased in 58.0%. The average frequency of sexual activity decreased every month in CAD (P < 0.05), in ACS (P < 0.05) and in CCS (P < 0.01) after undergoing coronary stenting respectively. The mean time interval between the onset of ED and CAD was 33 months. Resuming sexual activity after stenting varied from 2 weeks to 30 months. Significant predictors of ED after coronary stenting were mean age, diabetes mellitus, 2,3-vessel disease or current smoking status. It was concluded that coronary stenting had a significant incidence of ED. Mean age, diabetes mellitus, 2,3-vessel disease or current smoking status showed to be the main variables associated with ED. Attempts to improve individual secondary prevention outcomes (controlling serum glucose and smoking cessation) should be designed.
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Affiliation(s)
- H Shi
- Department of Cardiology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Zhu JH, Chen JZ, Wang XX, Xie XD, Sun J, Zhang FR. Homocysteine accelerates senescence and reduces proliferation of endothelial progenitor cells. J Mol Cell Cardiol 2006; 40:648-52. [PMID: 16600290 DOI: 10.1016/j.yjmcc.2006.01.011] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2005] [Revised: 01/01/2006] [Accepted: 01/12/2006] [Indexed: 12/13/2022]
Abstract
Our previous studies showed that homocysteine (Hcy) reduces endothelial progenitor cell (EPC) numbers and impairs functional activity. However, the mechanisms by which Hcy reduces EPCs numbers and activity remain to be determined. Recent studies have demonstrated that reduced EPCs numbers and activity was associated with EPCs senescence which involved telomerase activity. Therefore, we investigated whether Hcy accelerates the onset of EPCs senescence through telomerase inactivation, leading to cellular dysfunction. EPCs were isolated from peripheral blood and characterized. After ex vivo cultivation, EPCs became senescent as determined by acidic beta-galactosidase staining. Hcy dose-dependently accelerated the onset of EPCs senescence in culture. Moreover, Hcy decreased proliferation of EPCs as assessed by BrdU incorporation assay and colony-forming capacity. To get further insights into the underlying mechanisms of these effects induced by Hcy, we measured telomerase activity and determined the phosphorylation of Akt by using western blot. Hcy significantly diminished telomerase activity and Akt phosphorylation. Taken together, the results of the present study demonstrated that Hcy accelerated the onset of EPCs senescence, leading to cellular dysfunction. The effect of Hcy might be dependent on telomerase inactivation, and Akt dephosphorylation also appeared to play a major role. In addition, atorvastatin had a preventative effect against Hcy-induced EPCs senescence.
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Affiliation(s)
- J H Zhu
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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Zhu J, Wang X, Chen J, Sun J, Zhang F. Reduced number and activity of circulating endothelial progenitor cells from patients with hyperhomocysteinemia. Arch Med Res 2006; 37:484-9. [PMID: 16624647 DOI: 10.1016/j.arcmed.2005.09.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [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: 08/14/2005] [Accepted: 09/30/2005] [Indexed: 10/24/2022]
Abstract
BACKGROUND Hyperhomocysteinemia (HHcy) contributes to atherosclerosis and coronary artery diseases by inducing endothelial cell injury and dysfunction. Recent studies provided increasing evidence that endothelial progenitor cells (EPCs) participated in ongoing endothelial repair. The changes of EPCs in patients with HHcy have not yet been elucidated. Therefore, we investigated the number and functional activity of EPCs in patients with HHcy. METHODS Human EPCs were isolated and cultured from patients with HHcy (n = 30) and matched volunteers (n = 30). Circulating EPCs were enumerated as AC133+ KDR+ cells via fluorescence-activated cell sorter analysis. Additionally, EPC were expanded from human blood in vitro and identified by DiI-acLDL uptake and lectin staining by direct fluorescent staining under a laser scanning confocal microscope. EPC migration activities were determined by modified Boyden chamber assay. EPC adhesion assay was performed by replating cells on fibronectin-coated dishes and then counting adherent cells. RESULTS A significant decrease was observed in circulating EPC (AC133+ KDR+ cells) numbers in patients with HHcy compared with control subjects (63.9 +/- 11.7 cells/mL vs. 91.5 +/- 14.2 cells/mL blood, p <0.01). In addition, the numbers of EPCs also decreased in patients with HHcy after ex vivo cultivation (36.1 +/- 6.5 vs. 51.5 +/- 8.3 EPCs/x200 field, p <0.01). Both circulating EPCs and differentiated EPCs were inversely correlated with total homocysteine levels. In addition, EPCs from patients with HHcy were significantly impaired in their migratory capacity and ability to adhere to fibronectin compared with controls. CONCLUSIONS The present study demonstrated that EPC numbers and functional capacity were impaired in patients with HHcy.
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Affiliation(s)
- JunHui Zhu
- Department of Cardiology, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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Affiliation(s)
- C Y Wang
- Shandong Provincial Institute of Dermatology and Venereology, 57 Jiyan Road, Jinan, China
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Wang LH, Jin ZM, Chen JZ, Zhu JH, Zheng LR, Tao QM, Zhang FR. Effect of heparin on activation of platelet function in patients during radiofrequency catheter ablation. Clin Exp Pharmacol Physiol 2006; 33:66-70. [PMID: 16445701 DOI: 10.1111/j.1440-1681.2006.04325.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
1. Thromboembolism occurs in 0.4-2.0% of patients undergoing radiofrequency catheter ablation (RFCA). Some studies have shown that treatment with heparin inhibits the activation of coagulation and fibrinolysis. No study has directly measured the activation of platelet aggregation to investigate the effect of heparin on platelet function. The purpose of the present study was to observe the inhibitory effect of heparin on platelet activity in patients undergoing RFCA. 2. Sixty-two patients with supraventricular tachycardia were observed and divided into a heparin-treatment group and a control group. Changes in platelet aggregability (PAG) and thromboxane B(2) (TXB(2)) in the blood samples of all patients at different times (before, after electrophysiological study, immediately after and 10 and 30 min after the RFCA procedure) were observed. 3. No indication of clinically symptomatic thromboembolism and no major differences in baseline characteristics and procedure were apparent in either group. The levels of PAG and TXB(2) were all clearly increased after the electrophysiological study (all P < 0.05). Immediately after RFCA, PAG and TXB(2) levels were significantly increased in both groups and remained elevated 30 min after the procedure (all P < 0.05). In the heparin-treatment group, the increases in PAG (54.69 +/- 3.24%) and TXB(2) (29.01 +/- 1.84%) caused by RFCA were lower than changes observed in the control group (70.92 +/- 3.45 and 44.70 +/- 3.28%, respectively; both P < 0.01). Moreover, treatment with heparin normalized the elevated level of PAG 30 min after RFCA more clearly. 4. The results of the present study suggest that intravenous heparin treatment during the operation inhibits the activation of platelets induced by RFCA.
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Affiliation(s)
- Li-Hong Wang
- Department of Cardiovascular Science, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310003, China.
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Qiu YG, Zhu JH, Tao QM, Zheng P, Chen JZ, Hu SJ, Zhang FR, Zheng LR, Zhao LL, Yao XY. Captopril Administered at Night Restores the Diurnal Blood Pessure Rhythm in Adequately Controlled, Nondipping Hypertensives. Cardiovasc Drugs Ther 2005; 19:189-95. [PMID: 16142596 DOI: 10.1007/s10557-005-1376-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The aim of our study was to evaluate whether captopril administered at night, can shift the circadian blood pressure (BP) from a nondipper to a dipper pattern in adequately controlled hypertensive patients, who continued their antihypertensive therapy. In a prospective, randomized, double blind, placebo-controlled designed study, we enrolled 121 treated, adequately controlled nondipping hypertensive patients. All patients were randomly assigned to 12.5 mg captopril or placebo treatment administered at night. In case of nondippers, the dosage of captopril or placebo was doubled after two weeks of treatment, while for dippers antihypertensive regimens were not changed. After another two weeks, all patients underwent ambulatory BP monitoring. Our results show that at the end of the active treatment period, the prevalence of a dipping diurnal BP pattern in the captopril group (70%) was significantly higher than that in the placebo group (9.8%, P < 0.001). Nighttime BP, night/day BP ratio, nighttime BP load and 24-h systolic BP were significantly lower after 4 weeks nighttime captopril treatment compared to baseline. In conclusion, the present study demonstrates for the first time that captopril administered at night can restore the diurnal BP rhythm and decrease the elevated night/day BP ratio in appropriately controlled, nondipper hypertensive patients. These results were mainly due to the decrease of nighttime BP.
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Affiliation(s)
- Yuan-Gang Qiu
- Department of Cardiology, the First Affiliated Hospital, Zhejiang University, College of Medicine, 79 Qingchun Road, Hangzhou 310003, People's Republic of China.
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Liu YR, Tao QM, Chen JZ, Tao M, Guo XG, Shang YP, Zhu JH, Zhang FR, Zheng LR, Wang XX. [Identification of a novel mutation at the point of low density lipoprotein receptor gene from a subject with familial hypercholesterolemia]. Sheng Li Xue Bao 2004; 56:566-72. [PMID: 15497035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Family hypercholesterolemia (FH) is a genetic disorder caused by mutation in the low density lipoprotein receptor (LDLR) gene. It is characterized by a high concentration of low density lipoprotein (LDL), which frequently gives rise to tendon xanthenes and premature coronary artery disease. We studied a FH family ,which was diagnosed by clinical features and blood lipid tests. The Total cholesterol level of the family was 19.05 mmol/L and the LDL level was 17.06 mmol/L in the proband homozygous FH subjects, while the total cholesterol was 7.96 mmol/L and LDL was 5.55 mmol/L in the heterozygous FH subjects. DNA segments amplified with PCR were sequenced in heterozygous and homozygous FH patients. Two novel identical mutation alleles of GAG683GCG, which caused an amino acid change from Glu to Ala, were detected in Exon4 of LDL receptor gene in homozygous proband. DNA sequencing revealed that the proband's parents were heterozygotes with the same mutational alleles as the proband. These results are in coincidence with the clinical diagnoses. Moreover Epstein-Barr virus transformed lymphocytes (EBV-Ls) were derived by routine virus infection transforming protocol. The cells bounded with the fluorescently conjugated LDL were measured by fluorescence flow cytometry. The ratios of functional LDLR in EBV-Ls originated from homozygous FH, heterozygous FH and normal control were 7.02%, 62.64% and 84.69%, respectively. As a result, the homozygous FH patient's LDLR had 8.29% and the heterozygous FH patient's LDLR had 73.96% of the activity of the control. It is apparent that LDL receptor activity of homozygous FH subject is significantly lower than normal control. The data from fluorescence flow cytometry analysis of EBV-Ls strongly support the clinical diagnoses and the results of DNA sequencing. In accordance with the updated version of UMD-LDLR, the mutant GAG683GCG in Exon4 of LDLR gene which we have identified is a novel mutation of the LDLR gene in human with hypercholesterolemia.
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Affiliation(s)
- Yan-Rong Liu
- Department of Cardiovascular Diseases, the First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou, China
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Zhang FR, Chen JZ, Zhu JH, Wang XX, Zhu JH, Shang YP, Guo XG, Dai HM, Sun J. [Effects of puerarin on number and activity of endothelial progenitor cells from peripheral blood]. Zhongguo Zhong Yao Za Zhi 2004; 29:777-81. [PMID: 15506293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
OBJECTIVE To investigate whether puerarin can augment endothelial progenitor cells (EPCs) numbers, promote EPC proliferation, migration and adhesion. METHOD Total mononuclear cells (MNCs) were isolated from peripheral blood by Ficoll density gradient centrifugation, and then the cells were plated on fibronectin-coated culture dishes. After 7 days culture, attached cells were stimulated with puerarin (to make a series of final concentrations: 0. 1, 0.5, 1, 3 mmol x L(-1)) or vehicle control for the respective time points (6, 12, 24, 48 h). EPCs were characterized as adherent cells double positive for DiLDL-uptake and lectin binding by direct fluorescent staining under a laser scanning confocal microscope. EPCs proliferation, migration and in vitro vasculogenesis activity were assayed with MT assay, modified Boyden chamber assay and in vitro vasculogenesis kit, respectively. EPCs adhesion assay was performed by replating those on fibronectin-coated dishes, then adherent cells were counted. RESULT Incubation of isolated human MNCs with puerarin dose increased the number of EPCs, maximum at 3 mmol x L(-1), 24 hours (approximately 1-fold increase, P < 0.01). In addition, puerarin also promoted EPC proliferative, migratory, adhesive and in vitro vasculogenesis capacity. CONCLUSION Puerarin can augment the number of EPCs with enhanced functional activity.
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Affiliation(s)
- Fu-Rong Zhang
- Department of Cardiovascular Diseases, First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou 310003, China
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Qiu YG, Yao XY, Tao QM, Zheng P, Chen JZ, Zhu JH, Zhang FR, Zheng LR, Zhao LL. [Profile on circadian blood pressure and the influencing factors in essential hypertensive patients after treatment]. Zhonghua Liu Xing Bing Xue Za Zhi 2004; 25:710-4. [PMID: 15555399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
OBJECTIVE To explore the circadian blood pressure (BP) profile and its influencing factors in essential hypertensive patients after treatment. METHODS Cross-sectional surveillance was carried out in essential hypertensive subjects after treatment whose clinic blood pressure had been under control as 140/90 mm Hg (1 mm Hg = 0.133 kPa) for at least one month. All patients underwent a twenty-four-hour ambulatory blood pressure monitoring device (spacelabs 90207). The nocturnal fall of blood pressure (BP) was calculated from (daytime mean BP-night-time mean BP)/daytime BP, while 'daytime' values were recorded between 6 h and 22 h and 'night-time' values between 22 h and 6 h. Non-dippers were defined as those whose nocturnal decrease in mean systolic BP and/or mean diastolic BP was < 10% of the daytime BP. Binary logistic regression analysis was used to evaluate the correlation between circadian blood pressure profile and factors as gender, age, height, body mass index (BMI), family history of premature cardiovascular disease, women under age 65 or men under age 55, smoking habits, grade of hypertension, and strategy of antihypertensive drugs. RESULTS 208 treated essential hypertensive patients were enrolled in the study. 79 individuals were dippers and 129 were non-dippers. Data from logistic regression analysis showed that four factors as age, premature family history of cardiovascular disease, overweight or obesity, and strategy of antihypertensive drugs were significantly influencing the circadian blood pressure profile in treated hypertensive patients. The incidence of non-dippers in patients of 70 years of age or older and those between 60 and 69 were 3.3 and 2.3 times of those with less than 60 (P = 0.009 and 0.031, respectively). The prevalence of non-dippers in patients with a premature family history of cardiovascular disease was 3.7 times greater than those in subjects without a premature history of cardiovascular disease (P = 0.029). Similarly, the incidence of non-dippers in patients of overweight (24 </= BMI < 28) and obesity (BMI >/= 28) were 3.0 and 4.8 times of those in subjects of normal weight (P = 0.003 and 0.009, respectively). Compared with patients treated with long-acting calcium channel blockers (CCBs), patients treated with angiotensin-converting enzyme (ACE) inhibitors or angiotensin II receptor blockers (ARBs) alone had less prevalence of nondippers (OR = 0.139, P = 0.010). Patients treated with joint antihypertensive scheme including ACE inhibitors or ARBs(but not including diuretics) had the tendency of lower incidence of abnormal circadian blood pressure rhythm (OR = 0.453, P = 0.118). Patients treated with joint antihypertensive scheme including diuretics (not including ACE inhibitors or ARBs) and with joint antihypertensive strategy including diuretics and ACE inhibitors or ARBs had lower incidence of nondippers (OR = 0.378 and 0.273, respectively; P = 0.030 and 0.011, respectively). CONCLUSIONS Approximately 2/3 treated essential hypertensive patients had a non-dipper blood pressure profile. Age, premature family history of cardiovascular disease, overweight/obesity, and antihypertensive drugs strategy were correlated with circadian blood pressure profile. Compared with long-acting CCBs, diuretics, ACE inhibitors or ARBs might be helpful in keeping the circadian blood pressure rhythm at normal range.
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Affiliation(s)
- Yuan-Gang Qiu
- Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
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Qiu YG, Zhang FR, Chen JZ, Zhu JH, Tao QM, Zheng LR, Xu Y, Zhao LL. [Psychological status and its influencing factors on patients undergoing electrophysiology studies and radiofrequency catheter ablation]. Zhonghua Liu Xing Bing Xue Za Zhi 2003; 24:928-31. [PMID: 14575611] [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: 04/27/2023]
Abstract
OBJECTIVE To study the psychological status and its influencing factors in patients before and after electrophysiology studies and radiofrequency catheter ablation (RFCA). METHODS 125 inpatients (71 men, 54 women, mean age 42.91 years +/- 16.1 years) who underwent a scheduled electrophysiology studies and RFCA for the first time and fulfilled entry criteria, were enrolled. They were randomly assigned to receiving either a consent which did not detail specific risk (group B) regarding the procedure or one that detailed the risks (group A). All patients were examined by the Chinese version of Symptom Check List-90 (SCL-90) within 24 hours before the procedure (after the consent) and on the third day after. RESULTS (1) Before the electrophysiology studies and RFCA, scores of anxiety and phobic anxiety constructs were higher than the norm. After the procedure, no specific construct score became higher. (2) After the procedure, patients showed a significantly decrease in the scores of obsessive-compulsive, depression, anxiety, hostility, phobic anxiety, paranoid ideation, psychotism constructs, global severity index, total positive symptoms and positive symptom severity index. (3) Women scored higher on somatization, depression, anxiety, phobic anxiety constructs, global severity index and positive symptom total before the procedure. (4) Detail informed consent was not associated with increased mental symptoms when compared with consent that did not detail specific risks. CONCLUSIONS In this study, patients showed slightly anxiety and phobic anxiety before electrophysiology studies and RFCA with women having more mental symptoms before the procedure that called for special attention. Detail information including the course and specific risk regarding the procedure was not associated with increased psychological symptoms. It was suggested that the patients should receive detail information before electrophysiology studies and RFCA.
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Affiliation(s)
- Yuan-Gang Qiu
- Department of Cardiology, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
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38
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Gao DC, Zhu JH, Zhang FR, Zheng LR, Tao QM, Chen JZ. [Relationship of collagen content, intimal thickening and angiotensin II level of iliac arteries after balloon injury in rabbits]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2002; 31:331-336. [PMID: 12601879 DOI: 10.3785/j.issn.1008-9292.2002.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
OBJECTIVE: To investigate the relationship of collagen content intimal thickening and angiotensin II level of iliac arteries after balloon injury in rabbits. METHODS Fifty male New Zealand white rabbits were randomly devided into 6 groups: losartan groups, benazapril groups and control groups for 4 weeks or 8 weeks. Every rabbit underwent endothelial debridement of the right iliac artery. lorsartan (15 mg/kg/d) and benazapril (5 mg/kg/d) were orally administrated respectively in losartan groups and benazepril groups from 5 days before until 4 weeks or 8 weeks after balloon injury. RESULTS: Collagen content and intimal area of rabbit iliac arteries were increased after balloon injury. After intervention for 4 weeks with losartan and benazapril, collagen content was decreased in losartan and benazapril groups than in control group 23.58+/-6.16 % and 22.67+/-10.20 % compared with 35.20+/-7.25 % respectively, P<0.05. After intervention for 8 weeks, collagen content was significantly decreased (20.69+/-11.16)% and 25.41+/-11.00 % compared with 42.69+/-13.99 % respectively, P<0.05; Intimal area and intimal to medial area ratio were also decreased in losartan and benazapril groups than in control group; Lumen area was increased in losartan and benazapril groups than in control group(0.79+/-0.25)mm2 and (0.76+/-0.28)mm2 compared with (0.62+/-0.27)mm2 P<0.05; Tissue angiotensin II level was increased in losartan group (516.31+/-70.79)pg/mg.pro compared with (410.72+/-100.11)pg/mg.pro, P<0.05, and decreased in benazapril group than in control group (340.62+/-67.69)pg/mg.pro compared with (410.72+/-100.11)pg/mg.pro, P<0.05. There were close correlation between tissue angiotensin II level and intimal area, or between tissue angiotensin II level and intimal to medial area ratio, or and collagen content in benazapril group, respectively, P<0.05. Conclusion (1) Collagen protein is a dynamic participant in vascular injury. (2) Tissue renin angiotensin system may play an important role in collagen accumulation, intimal thickening and vascular injury after angioplasty. (3) Losartan and benazapril reduce vascular collagen content and inhibit intimal thickening after balloon injury.
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Affiliation(s)
- Dan-Chen Gao
- The First Affiliated Hospital, College of Medical Sciences, Zhejiang University, Hangzhou 310003, China
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39
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Chen H, Chen JZ, Zhu JH, Tao QM, Zhang FR, Zheng LR. [Percutaneous transluminal septal myocardial ablation in hypertrophic obstructive cardiomyopathy]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2002; 31:393-395. [PMID: 12601896 DOI: 10.3785/j.issn.1008-9292.2002.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Affiliation(s)
- Hao Chen
- The First Affiliated Hospital, College of Medical Sciences, Zhejiang University, Hangzhou 310003, China
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40
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Abstract
Endothelial monocyte-activating polypeptide (EMAP) II is a unique cytokine, also known as p43, the active mature form of which exhibits antiangiogenic properties in vivo and in vitro. The proteolytic enzymes associated with the cleavage and release of the active mature form, however, remain unclear. Here we show that, in contrast to prior observations, purified pro-EMAP II is not cleaved by either caspase-3 or -7 in vivo or in vitro. Thus other proteolytic processes, which allow it to induce apoptosis via caspase-3 activation in migrating and dividing endothelium, may be involved in the release of the active mature EMAP II.
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Affiliation(s)
- F R Zhang
- Departments of Pediatrics, Cardiothoracic Surgical Research, and Surgery, Childrens Hospital Research Institute, Los Angeles 90027, USA
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41
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Zhang Y, Chen JZ, Zhang FR, Xia Q, Hu XC. [Effect of HOE642 on ischemic myocardium reperfusion injury]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2002; 31:189-192. [PMID: 12596311 DOI: 10.3785/j.issn.1008-9292.2002.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
OBJECTIVE: To investigate whether the specific sodium-hydrogen antiporter HOE642 could modifies myocardial ischemia and reperfusion injury. METHODS: The isolated working rat heart model was used. The rats were divided into four subgroups: Ischemic reperfusion (Control group),HOE642 given before Ischemia (HOE-Pr), HOE642 given during Ischemia (HOE-Is), HOE642 given during reperfusion (HOE-Re). LVDP, LVEDP, arrythmia, coronary flow and myocardial enzymes were measured. RESULTS: HOE642 given 15 minutes before ischemia increased coronary flow and significantly improved cardiac function, reduced the severity of ischemia, reperfusion arrhythmia and myocardial CK-MB, LDH release, but had no effect on heart rate. HOE642 given during ischemia only reduced LVEDP, the ischemia severity, reperfusion arrhythmia and myocardial enzyme release. It had no effect on heart rate or LVDP. There were no effects when the drug was given during reperfusion. CONCLUSION: HOE642 demonstrates significant cardioprotective effects. These protective effects are most significant when the drug is given before ischemia is induced.
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Affiliation(s)
- Yun Zhang
- The first affiliated Hospital, College of Medical Sciences, Zhejiang University, Hangzhou 310003, China
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42
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Zhang FR, Chen JZ, Tao QM, Zhu JH, Zheng LR. [Transcatheter closure of patent ductus arteriosus with Rashkind occlude and Amplatzer duct occluder]. Zhejiang Da Xue Xue Bao Yi Xue Ban 2002; 31:55-56. [PMID: 12557338 DOI: 10.3785/j.issn.1008-9292.2002.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Affiliation(s)
- Fu-Rong Zhang
- The First Affiliated Hospital,College of Medical Sciences, Zhejiang University,Hangzhou 310003,China
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43
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Ma XY, Su YB, Zhang FR, Li JF. Effects of vitamin E on the blastogenic response of splenocytes and lipofuscin contents in the hearts and brains of aged mice. J Environ Pathol Toxicol Oncol 1996; 15:51-3. [PMID: 9037264] [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: 02/03/2023] Open
Abstract
Semipurified diets containing 30 or 500 ppm of dl-alpha-tocopherol (VE) were fed for 12 weeks to young (3-month-old) and old (20-month-old) Swiss mice. We measured the blastogenic response of splenocytes, the serum VE, and the lipofuscin levels in brains and hearts. We found that old mice fed with 500 ppm VE diet had a significantly higher serum VE level and blastogenic response of splenocytes to concanavalin-A (ConA) and lipopolysaccharide (LPS) than those fed with 30 ppm VE diet (p < 0.01). However, the lipofuscin level in the brains and hearts of aged mice declined substantially with the VE supplementation (heart: p < 0.001, brain: p < 0.05). Furthermore, the effects of dietary VE on the serum VE and tissue lipofuscin content in aged mice were much more obvious than in the young animals.
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Affiliation(s)
- X Y Ma
- School of Public Health, N. Bethune Medical University, P.R. China
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44
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McNeil JB, McIntosh EM, Taylor BV, Zhang FR, Tang S, Bognar AL. Cloning and molecular characterization of three genes, including two genes encoding serine hydroxymethyltransferases, whose inactivation is required to render yeast auxotrophic for glycine. J Biol Chem 1994; 269:9155-65. [PMID: 8132653] [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: 01/29/2023] Open
Abstract
The genes encoding both the cytosolic and mitochondrial serine hydroxymethyltransferases (SHM2 and SHM1, respectively) and a third unidentified gene of the yeast Saccharomyces cerevisiae have been isolated and their nucleotide sequences determined. Analysis of the predicted amino acid sequence of the amino-terminal regions, sequence comparison with other genes encoding SHMT enzymes, and subcellular fractionation studies all suggested that the SHM1 gene encodes the mitochondrial SHMT, while the SHM2 gene encodes the cytosolic enzyme. The SHM2 gene but not the SHM1 gene has putative GCN4 sites upstream of the putative TATA box, suggesting regulation of its transcription by the general amino acid control system. Yeast mutants with disruptions at each SHM gene and in both genes were constructed and all mutants had the same growth requirements as the parental strains. Mutagenesis of the double-disrupted, shm1 shm2 yeast yielded strains of a single complementation group that are auxotrophic for glycine. Complementation of the glycine auxotrophy using a yeast genomic library retrieved the SHM1 and SHM2 genes and a third gene designated GLY1. Gene disruption studies demonstrated that inactivation of SHM1, SHM2, and GLY1 is required to yield yeast that are completely auxotrophic for glycine.
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Affiliation(s)
- J B McNeil
- Department of Microbiology, University of Toronto, Ontario, Canada
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45
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Bo MQ, Zhang FR. [Xi xie ting in the treatment of infantile diarrhea]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1993; 13:343-4, 324. [PMID: 8257837] [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: 01/29/2023]
Abstract
In this study, children suffering from viral and dietetic diarrhea were treated by bathing their legs and feet with Xi Xie Ting according to the TCM therapeutic principle of Clearing Dampness-Heat, eliminating inflammation to stop diarrhea, diuresis and regulating the functions of Spleen and Stomach. The results showed that there was a significant difference in mean days for disappearance of diarrhea between treatment group and control group (P < 0.01). There were beneficial effects on curtailing the therapeutic course, reducing the times of diarrhea and amount of stool and ameliorating the shape and property of stool.
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Affiliation(s)
- M Q Bo
- Hebei Provincial People's Hospital, Shijiazhuang
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46
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Taylor BV, McNeil JB, McIntosh EM, Zhang FR, Bognar AL. Cloning of the genes encoding the serine hydroxymethyltransferases from Saccharomyces cerevisiae. Adv Exp Med Biol 1993; 338:711-4. [PMID: 8304212 DOI: 10.1007/978-1-4615-2960-6_147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- B V Taylor
- Department of Microbiology, University of Toronto, Ontario, Canada
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47
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Aubry M, Marineau C, Zhang FR, Zahed L, Figlewicz D, Delattre O, Thomas G, de Jong PJ, Julien JP, Rouleau GA. Cloning of six new genes with zinc finger motifs mapping to short and long arms of human acrocentric chromosome 22 (p and q11.2). Genomics 1992; 13:641-8. [PMID: 1639391 DOI: 10.1016/0888-7543(92)90135-f] [Citation(s) in RCA: 20] [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: 12/28/2022]
Abstract
Zinc finger genes encode proteins containing tandemly repeated zinc-mediated folded structures that are found in several transcriptional regulatory proteins. To identify new zinc finger genes, we have screened at low stringency human cosmid libraries enriched in chromosome 22 sequences with a probe derived from the finger region of the mouse Kruppel-like gene, mKr2. We identified 23 nonoverlapping human cosmids cross-hybridizing with the probe. All sequences obtained from cosmid subclones hybridizing with the probe revealed Kruppel-type consensus sequences. Hybridizations to somatic cell hybrid panels and to metaphase chromosomes revealed that 2 nonoverlapping zinc finger cosmids map to chromosome 22p and 4 map to 22q11.2. The 17 other nonoverlapping cosmids most likely map to other chromosomes. The short arms of acrocentric chromosomes are thought to encode only ribosomal RNA genes. Therefore, the identification of two zinc finger genes on chromosome 22p represents an unexpected finding of unknown significance. The four zinc finger genes that map to 22q11.2 are within the cat eye and DiGeorge syndrome regions and thus provide us with potential candidate genes for these developmental malformations.
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Affiliation(s)
- M Aubry
- Neuroscience Unit, Montreal General Hospital, Quebec, Canada
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Zhang FR, Heilig R, Thomas G, Aurias A. A one-step efficient and specific non-radioactive non-fluorescent method for in situ hybridization of banded chromosomes. Chromosoma 1990; 99:436-9. [PMID: 1703066 DOI: 10.1007/bf01726696] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A non-radioactive method for in situ hybridization of cosmid probes to metaphase chromosomes is described. Two procedures are involved: (i) hybridization with a cosmid probe labelled by nick translation in the presence of digoxigenin dUTP. The signal is visualized by an alkaline phosphatase conjugated antibody. (ii) FPG banding of the chromosomes. The steps involved in these two procedures are combined in an order which allows simultaneous observation of the banding pattern and the hybridization signal. The metaphases can thus be analysed after a single photographic step. This technique is considerably simpler than the method used previously.
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Affiliation(s)
- F R Zhang
- URA 620 C.N.R.S., Institut Curie, Paris, France
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49
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Abstract
The second smallest chromosome of the human karyotype, i.e., chromosome 22, is involved in many congenital or acquired structural aberrations. This variety can be taken advantage of to determine the exact linear order, from centromere to telomere, of cloned probes and chromosomal breakpoints. Eleven probes were localized with respect to breakpoints of 11 der(22) of independent cell lines using in situ hybridization on metaphasic spreads. The deduced order of the tested probes and that of the breakpoints are in complete agreement with the published genetic map and the karyotypic analysis, respectively. This approach enables a correlation of the genetic map with the chromosomal banding.
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Affiliation(s)
- F R Zhang
- URA 620 CNRS Institut Curie, section Biologie, Paris, France
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50
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Zhang FR, Delattre O, Rouleau G, Couturier J, Lefrançois, Thomas G, Aurias A. The neuroepithelioma breakpoint on chromosome 22 is proximal to the meningioma locus. Genomics 1990; 6:174-7. [PMID: 2303258 DOI: 10.1016/0888-7543(90)90463-5] [Citation(s) in RCA: 20] [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: 12/31/2022]
Abstract
The recurrent translocation breakpoint on chromosome 22 of neuroepithelioma has been localized between two probes, D22S1 and D22S15, by both in situ hybridization and somatic cell hybrids. These two probes have further been shown to be genetically linked at theta = 0.0 and a lod score of 5.3. The two probes were unaffected by a partial deletion of the chromosome 22 long arm of a meningioma, showing that the meningioma locus is distal to that of the neuroepithelioma.
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Affiliation(s)
- F R Zhang
- CNRS-URA 620, Institut Curie, Paris, France
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