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Chen ZR, Hong Y, Wen SH, Zhan YQ, Huang WQ. Dexmedetomidine Pretreatment Protects Against Myocardial Ischemia/Reperfusion Injury by Activating STAT3 Signaling. Anesth Analg 2023; 137:426-439. [PMID: 37145970 PMCID: PMC10319249 DOI: 10.1213/ane.0000000000006487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2023] [Indexed: 05/07/2023]
Abstract
BACKGROUND Myocardial infarction is a common perioperative complication, and blood flow restoration causes ischemia/reperfusion injury (IRI). Dexmedetomidine (DEX) pretreatment can protect against cardiac IRI, but the mechanism is still insufficiently understood. METHODS In vivo, myocardial ischemia/reperfusion (30 minutes/120 minutes) was induced via ligation and then reperfusion of the left anterior descending coronary artery (LAD) in mice. Intravenous infusion of 10 μg/kg DEX was performed 20 minutes before ligation. Moreover, the α2-adrenoreceptor antagonist Yohimbine and STAT3 inhibitor Stattic were applied 30 minutes ahead of DEX infusion. In vitro, hypoxia/reoxygenation (H/R) with DEX pretreatment for 1 hour was performed in isolated neonatal rat cardiomyocytes. In addition, Stattic was applied before DEX pretreatment. RESULTS In the mouse cardiac ischemia/reperfusion model, DEX pretreatment lowered the serum creatine kinase-MB isoenzyme (CK-MB) levels (2.47 ± 0.165 vs 1.55 ± 0.183; P < .0001), downregulated the inflammatory response ( P ≤ .0303), decreased 4-hydroxynonenal (4-HNE) production and cell apoptosis ( P = .0074), and promoted the phosphorylation of STAT3 (4.94 ± 0.690 vs 6.68 ± 0.710, P = .0001), which could be blunted by Yohimbine and Stattic. The bioinformatic analysis of differentially expressed mRNAs further confirmed that STAT3 signaling might be involved in the cardioprotection of DEX. Upon H/R treatment in isolated neonatal rat cardiomyocytes, 5 μM DEX pretreatment improved cell viability ( P = .0005), inhibited reactive oxygen species (ROS) production and calcium overload (both P ≤ .0040), decreased cell apoptosis ( P = .0470), and promoted STAT3 phosphorylation at Tyr705 (0.102 ± 0.0224 vs 0.297 ± 0.0937; P < .0001) and Ser727 (0.586 ± 0.177 vs 0.886 ± 0.0546; P = .0157), which could be abolished by Stattic. CONCLUSIONS DEX pretreatment protects against myocardial IRI, presumably by promoting STAT3 phosphorylation via the α2-adrenoreceptor in vivo and in vitro.
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Affiliation(s)
- Zhao-Rong Chen
- From the Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Chinaand
| | - Yu Hong
- Department of Pharmacology, Cardiac and Cerebral Vascular Research Center, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Shi-Hong Wen
- From the Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Chinaand
| | - Ya-Qing Zhan
- From the Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Chinaand
| | - Wen-Qi Huang
- From the Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Chinaand
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Zhan Y, Ling Y, Deng Q, Qiu Y, Shen J, Lai H, Chen Z, Huang C, Liang L, Li X, Wu J, Huang W, Wen S. HMGB1-Mediated Neutrophil Extracellular Trap Formation Exacerbates Intestinal Ischemia/Reperfusion-Induced Acute Lung Injury. J Immunol 2022; 208:968-978. [PMID: 35063996 DOI: 10.4049/jimmunol.2100593] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 12/07/2021] [Indexed: 12/13/2022]
Abstract
Influx of activated neutrophils into the lungs is the histopathologic hallmark of acute lung injury (ALI) after intestinal ischemia/reperfusion (I/R). Neutrophils can release DNA and granular proteins to form cytotoxic neutrophil extracellular traps (NETs), which promotes bystander tissue injury. However, whether NETs are responsible for the remote ALI after intestinal I/R and the mechanisms underlying the dissemination of harmful gut-derived mediators to the lungs are unknown. In the C57BL/6J mouse intestinal I/R model, DNase I-mediated degradation and protein arginine deiminase 4 (PAD4) inhibitor-mediated inhibition of NET treatments reduced NET formation, tissue inflammation, and pathological injury in the lung. High-mobility group protein B1 (HMGB1) blocking prevented NET formation and protected against tissue inflammation, as well as reduced cell apoptosis and improved survival rate. Moreover, recombinant human HMGB1 administration further drives NETs and concurrent tissue toxic injury, which in turn can be reversed by neutrophil deletion via anti-Ly6G Ab i.p. injection. Furthermore, global MyD88 deficiency regulated NET formation and alleviated the development of ALI induced by intestinal I/R. Thus, HMGB1 released from necroptotic enterocytes caused ALI after intestinal I/R by inducing NET formation. Targeting NETosis and the HMGB1 pathway might extend effective therapeutic strategies to minimize intestinal I/R-induced ALI.
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Affiliation(s)
- YaQing Zhan
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - YiHong Ling
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Qiwen Deng
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - YuXin Qiu
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - JianTong Shen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - HanJin Lai
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - ZhaoRong Chen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - ChanYan Huang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - LiQun Liang
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; and
| | - Xiang Li
- Department of Anesthesiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - JianFeng Wu
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; and
| | - WenQi Huang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China;
| | - ShiHong Wen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China;
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Zhang YN, Chang ZN, Liu ZM, Wen SH, Zhan YQ, Lai HJ, Zhang HF, Guo Y, Zhang XY. Dexmedetomidine Alleviates Gut-Vascular Barrier Damage and Distant Hepatic Injury Following Intestinal Ischemia/Reperfusion Injury in Mice. Anesth Analg 2021; 134:419-431. [PMID: 34889823 DOI: 10.1213/ane.0000000000005810] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Intestinal ischemia/reperfusion (I/R) challenge often results in gut barrier dysfunction and induces distant organ injury. Dexmedetomidine has been shown to protect intestinal epithelial barrier against I/R attack. The present study aims to investigate the degree to which intestinal I/R attack will contribute to gut-vascular barrier (GVB) damage, and to examine the ability of dexmedetomidine to minimize GVB and liver injuries in mice. METHODS In vivo, intestinal ischemic challenge was induced in mice by clamping the superior mesenteric artery for 45 minutes. After clamping, the mice were subjected to reperfusion for either 2, 4, 6, or 12 hours. Intraperitoneal injection of dexmedetomidine 15, 20, or 25 μg·kg-1 was performed intermittently at the phase of reperfusion. For the in vitro experiments, the challenge of oxygen-glucose deprivation/reoxygenation (OGD/R) was established in cultured vascular endothelial cells, and dexmedetomidine (1 nM) was used to treat the cells for 24 hours. Moreover, in vivo and in vitro, SKL2001 (a specific agonist of β-catenin) or XAV939 (a specific inhibitor of β-catenin) was applied to determine the role of β-catenin in the impacts provided by dexmedetomidine. RESULTS The attack of intestinal I/R induced GVB damage. The greatest level of damage was observed at 4 hours after intestinal reperfusion. There was a significant increase in plasmalemma vesicle-associated protein-1 (PV1, a specific biomarker for endothelial permeability) expression (5.477 ± 0.718 vs 1.000 ± 0.149; P < .001), and increased translocation of intestinal macromolecules and bacteria to blood and liver tissues was detected (all P < .001). Liver damages were observed. There were significant increases in histopathological scores, serum parameters, and inflammatory factors (all P < .001). Dexmedetomidine 20 μg·kg-1 reduced PV1 expression (0.466 ± 0.072 vs 1.000 ± 0.098; P < .001) and subsequent liver damages (all P < .01). In vitro, dexmedetomidine significantly improved vascular endothelial cell survival (79.387 ± 6.447% vs 50.535 ± 1.766%; P < .001) and increased the productions of tight junction protein and adherent junction protein (all P < .01) following OGD/R. Importantly, in cultured cells and in mice, β-catenin expression significantly decreased (both P < .001) following challenge. Dexmedetomidine or SKL2001 upregulated β-catenin expression and produced protective effects (all P < .01). However, XAV939 completely eliminated the protective effects of dexmedetomidine on GVB (all P < .001). CONCLUSIONS The disruption of GVB occurred following intestinal I/R. Dexmedetomidine alleviated I/R-induced GVB impairment and subsequent liver damage.
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Affiliation(s)
| | - Ze-Nan Chang
- Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zi-Meng Liu
- Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | | | | | - Han-Jin Lai
- Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | | | - Yi Guo
- From the Departments of Anesthesiology
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Xu M, Cai SJ, Wen SH, Zhang HL. [Imaging features and management strategies of pulmonary nodules in children]. Zhonghua Er Ke Za Zhi 2021; 59:708-711. [PMID: 34333928 DOI: 10.3760/cma.j.cn112140-20210304-00180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- M Xu
- Department of Pediatric Respiratory Medicine, the Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - S J Cai
- Department of Pediatric Respiratory Medicine, the Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - S H Wen
- Department of Pediatric Respiratory Medicine, the Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - H L Zhang
- Department of Pediatric Respiratory Medicine, the Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
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Lai HJ, Zhan YQ, Qiu YX, Ling YH, Zhang XY, Chang ZN, Zhang YN, Liu ZM, Wen SH. HMGB1 signaling-regulated endoplasmic reticulum stress mediates intestinal ischemia/reperfusion-induced acute renal damage. Surgery 2021; 170:239-248. [PMID: 33745733 DOI: 10.1016/j.surg.2021.01.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 01/18/2021] [Accepted: 01/24/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Ischemia/reperfusion of the intestine often leads to distant organ injury, but the mechanism of intestinal ischemia/reperfusion-induced renal dysfunction is still not clear. The present study aimed to investigate the mechanisms of acute renal damage after intestinal ischemia/reperfusion challenge and explore the role of released high-mobility group box-1 in this process. METHODS Intestinal ischemia/reperfusion was induced in male Sprague-Dawley rats by clamping the superior mesenteric artery for 1.5 hours. At different reperfusion time points, anti-high-mobility group box-1 neutralizing antibodies or ethyl pyruvate were administered to neutralize or inhibit circulating high-mobility group box-1, respectively. RESULTS Significant kidney injury was observed after 6 hours of intestinal reperfusion, as indicated by increased serum levels of urea nitrogen and creatinine, increased expression of neutrophil gelatinase-associated lipocalin, interleukin-6, and MIP-2, and enhanced cell apoptosis, as indicated by cleaved caspase 3 levels in renal tissues. The levels of phosphorylated eIF2ɑ, activating transcription factor 4, and C/EBP-homologous protein (CHOP) were markedly elevated, indicating the activation of endoplasmic reticulum stress in the impaired kidney. High-mobility group box-1 translocated to cytoplasm in the intestine and serum concentrations of high-mobility group box-1 increased notably during the reperfusion phase. Both anti-high-mobility group box-1 antibodies and ethyl pyruvate treatment significantly reduced serum high-mobility group box-1 concentrations, attenuated endoplasmic reticulum stress in renal tissue and inhibited the development of renal damage. Moreover, the elevated expression of receptor for advanced glycation end products in the kidneys after intestinal ischemia/reperfusion was abrogated after high-mobility group box-1 inhibition. CONCLUSION These results suggested that high-mobility group box-1 signaling regulated endoplasmic reticulum stress and promoted intestinal ischemia/reperfusion-induced acute kidney injury. High-mobility group box-1 neutralization/inhibition might serve as a pharmacological intervention strategy for these pathophysiological processes.
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Affiliation(s)
- Han-Jin Lai
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P. R. China
| | - Ya-Qing Zhan
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P. R. China
| | - Yu-Xin Qiu
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P. R. China
| | - Yi-Hong Ling
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China
| | - Xu-Yu Zhang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P. R. China
| | - Ze-Nan Chang
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P. R. China
| | - Yi-Nan Zhang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P. R. China
| | - Zi-Meng Liu
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P. R. China.
| | - Shi-Hong Wen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, P. R. China.
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Ling YH, Chen JW, Wen SH, Huang CY, Li P, Lu LH, Mei J, Li SH, Wei W, Cai MY, Guo RP. Tumor necrosis as a poor prognostic predictor on postoperative survival of patients with solitary small hepatocellular carcinoma. BMC Cancer 2020; 20:607. [PMID: 32600297 PMCID: PMC7325084 DOI: 10.1186/s12885-020-07097-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 06/22/2020] [Indexed: 02/08/2023] Open
Abstract
Background Small hepatocellular carcinoma (sHCC) is a special subtype of HCC with the maximum tumor diameter ≤ 3 cm and excellent long-term outcomes. Surgical resection or radiofrequency ablation provides the greatest chance for cure; however, many patients still undergo tumor recurrence after primary treatment. To date, there is no clinical applicable method to assess biological aggressiveness in solitary sHCC. Methods In the current study, we retrospectively evaluated tumor necrosis of 335 patients with solitary sHCC treated with hepatectomy between December 1998 and 2010 from Sun Yat-sen University Cancer Center. Results The presence of tumor necrosis was observed in 157 of 335 (46.9%) sHCC patients. Further correlation analysis showed that tumor necrosis was significantly correlated with tumor size and vascular invasion (P = 0.026, 0.003, respectively). The presence of tumor necrosis was associated closely with poorer cancer-specific overall survival (OS) and recurrence-free survival (RFS) as evidenced by univariate (P < 0.001; hazard ratio, 2.821; 95% CI, 1.643–4.842) and multivariate analysis (P = 0.005; hazard ratio, 2.208; 95% CI, 1.272–3.833). Notably, the combined model by tumor necrosis, vascular invasion and tumor size can significantly stratify the risk for RFS and OS and improve the ability to discriminate sHCC patients’ outcomes (P < 0.0001 for both). Conclusions Our results provide evidence that tumor necrosis has the potential to be a parameter for cancer aggressiveness in solitary sHCC. The combined prognostic model may be a useful tool to identify solitary sHCC patients with worse outcomes.
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Affiliation(s)
- Yi-Hong Ling
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China
| | - Jie-Wei Chen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China
| | - Shi-Hong Wen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chao-Yun Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China
| | - Peng Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China
| | - Liang-He Lu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China
| | - Jie Mei
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China
| | - Shao-Hua Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China
| | - Wei Wei
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China
| | - Mu-Yan Cai
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China. .,Department of Pathology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China.
| | - Rong-Ping Guo
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China. .,Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, No. 651, Dongfeng Road East, Guangzhou, 510060, China.
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Liu ZM, Lai HJ, Guan XD, Wen SH, Shen JT, Nie Y, Liu N, Zhang XY. Terlipressin relieves intestinal and renal injuries induced by acute mesenteric ischemia via PI3K/Akt pathway. Int J Med Sci 2020; 17:2751-2762. [PMID: 33162803 PMCID: PMC7645354 DOI: 10.7150/ijms.46302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 09/16/2020] [Indexed: 12/13/2022] Open
Abstract
Background: To date, the effect of vasopressin on organ damages after acute mesenteric ischemia (MI) remains poorly understood. Aims: To investigate the effect of terlipressin, a selective vasopressin V1 receptor agonist, versus norepinephrine on the intestinal and renal injuries after acute MI, and to explore the underlying mechanism of terlipressin. Methods: Acute MI model was produced by clamping the superior mesenteric artery for 1 hour. Immediately after unclamping, terlipressin or norepinephrine was intravenously administered for 2 hours. Meanwhile, in vitro, RAW264.7 cells were treated with lipopolysaccharide or lipopolysaccharide+terlipressin. In addition, wortmannin was used to determine the role of phosphoinositide 3-kinase (PI3K)/ protein kinase B (Akt) pathway in the potential impacts of terlipressin. Results: MI led to severe hypotension, caused notable intestinal and renal impairments and resulted in high mortality, which were markedly improved by terlipressin or norepinephrine. Terlipressin increased mean arterial pressure, decreased intestinal epithelial cell apoptosis, inhibited the generation of M1 macrophage in intestinal and renal tissues, and hindered the release of inflammatory cytokines after MI. Moreover, in cultured macrophages, terlipressin reduced the mRNA level of specific M1 markers and the release of inflammatory cytokines caused by lipopolysaccharide challenge. Wortmannin decreased the expression of PI3K and Akt induced by terlipressin in cells and in tissues, and abolished the above protective effects conferred by terlipressin. Conclusions: Terlipressin or norepinephrine could effectively improve organ damages and mortality after acute MI. Terlipressin elevates blood pressure and inhibits intestinal epithelial apoptosis and macrophage M1 polarization via the PI3K/Akt pathway.
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Affiliation(s)
- Zi-Meng Liu
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou 510089, China
| | - Han-Jin Lai
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou 510089, China
| | - Xiang-Dong Guan
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou 510089, China
| | - Shi-Hong Wen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou 510089, China
| | - Jian-Tong Shen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou 510089, China
| | - Yao Nie
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou 510089, China
| | - Ning Liu
- Department of Critical Care Medicine, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou 510089, China
| | - Xu-Yu Zhang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou 510089, China
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Sun YF, Zhang MZ, Wang S, Dong WW, Chen JW, Guo XS, Wen SH, Zhao R, Guan DW. Relationship between the Degeneration and Regeneration of Neuromuscular Junction and Wound Age during the Repair of Mouse Skeletal Muscle Contusion. Fa Yi Xue Za Zhi 2019; 35:280-284. [PMID: 31282620 DOI: 10.12116/j.issn.1004-5619.2019.03.003] [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] [Received: 01/09/2019] [Indexed: 11/30/2022]
Abstract
Abstract Objective To investigate the morphological changes in the degeneration and regeneration of neuromuscular junctions (NMJ) during the repair of mouse skeletal muscle contusion and discuss the correlation between the degeneration and regeneration of NMJ and wound age. Methods A total of 50 healthy adult male mice were randomly divided into 10 groups, including 9 experimental groups and 1 control group. Immunofluorescent staining was applied, and neurofilament was marked with neurofilament protein-H (NF-H), presynaptic membrane was marked with synaptophysin (Syn), presynaptic membrane was marked with acetylcholine receptor (AChR). Morphological changes of NMJ regeneration at different time points after mouse skeletal muscle contusion were detected. Results The neurofilament and presynaptic membrane of NMJ at the junction of contusion zones began to degrade after contusion, and completed degradation at about 3 d post-injury. Then they gradually regenerated, roughly completing the regeneration at about 21 d and basically reaching the control group level. The ratio of presynaptic membrane quantity to presynaptic membrane quantity showed a trend of decreasing then rising and finally reaching the control level. Conclusion During the repair of mouse skeletal muscle contusion, the morphological changes and wound age of the NMJ at the junction of contusion zones have a close correlation, which is expected to be one of the biological indicators for forensic skeletal muscle wound age estimation.
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Affiliation(s)
- Y F Sun
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - M Z Zhang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - S Wang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - W W Dong
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - J W Chen
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - X S Guo
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - S H Wen
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - R Zhao
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - D W Guan
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
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Guo XS, Wen SH, Dong WW, Li BX, Chen ZY, Wang LL, Guan DW, Zhao R. Expression of Nrf2 in Different Cells after Human Cerebral Cortex Contusion. Fa Yi Xue Za Zhi 2019; 35:273-279. [PMID: 31282619 DOI: 10.12116/j.issn.1004-5619.2019.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Indexed: 11/30/2022]
Abstract
Abstract Objective To observe the expression changes of nuclear factor-erythroid derived 2-related factors (Nrf2) in different cells at different time points after human cerebral cortex contusion, and to discuss its application in brain wound age estimation. Methods Thirty-six human brain tissues were selected, of which 6 were for control and 30 were cortical contusion at different time points post-injury, which were divided into 0-1 h, 3-6 h, 1-3 d, 5-7 d, and 10-14 d post-injury groups, with 6 cases in each group. Based on paraffin embedded sections, HE staining was used to observe the morphological changes post-injury, and double immunofluorescence staining was used to detect the expression of Nrf2 in neurons, astrocytes, and microglia. The number of positive cells was counted and statistical analysis was made. Results The number of neurons decreased 1-3 d post-injury. The expression of Nrf2 cells in neurons increased after injury, and the rate of positive cells peaked at 1-3 d post-injury. Glial cells were activated 1-3 d post-injury, and the activation peaked at 5-7 d post-injury. The cerebromalacia began to form at 10-14 d post-injury. Glial fibrillary acidic protein (GFAP) positive cells in mice increased gradually after injury and peaked at 5-7 d post-injury, while the proportion of Nrf2 in GFAP positive cells was relatively stable. After injury, ionized calcium-binding adapter molecule 1 (IBA1) positive cells increased and activated gradually. The expression proportion of Nrf2 in IBA1 positive cells increased gradually, reached its peak at 5-7 d post-injury, and then decreased. Conclusion The expression of Nrf2 in different cells involves in the biological function of different cells post-injury, and the dynamic expression of single cells has a time-dependent pattern. This may provide a new reference index for the wound age estimation of brain contusion in human.
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Affiliation(s)
- X S Guo
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - S H Wen
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - W W Dong
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - B X Li
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Criminal Investigation Police University of China, Shenyang 110035, China
| | - Z Y Chen
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - L L Wang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - D W Guan
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - R Zhao
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
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10
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Wen SH, Tian ZL, Zhang M, Zhang MZ, Wang S, Chen JW, Sun YF, Wang CL, Zhao R, Guan DW. Relationship between Changes of Pericyte Number and Wound Age during Repair of Skeletal Muscle Contusion in Mice. Fa Yi Xue Za Zhi 2019; 35:267-272. [PMID: 31282618 DOI: 10.12116/j.issn.1004-5619.2019.03.001] [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] [Received: 01/04/2019] [Indexed: 11/30/2022]
Abstract
Abstract Objective To observe the change pattern of pericyte number at different time periods after mice skeletal muscle contusion and discuss its role in wound age estimation. Methods A mice gastrocnemius muscle contusion model was established. The form and number changes of pericytes at 1, 3, 5, 7, 9, 14, and 28 d post-injury were detected by multiple immunofluorescence staining. Results Compared with the slender shape of pericytes in normal skeletal muscles, pericytes in the contusion area had increased volume, rounder form and a round nuclei. Part of pericytes were found to express satellite cell markers paired-box transcription factor (Pax7) or myoblast determination 1 (MyoD1). The changes of pericyte number in skeletal muscles after contusion were time-dependant, and showed unimodal distribution with the extension of wound age. In the central contusion area, the number of pericytes peaked at 5 d post-injury while in the peripheral contusion area, the number of pericytes peaked at 5 d and 7 d post-injury. Conclusion The number of pericytes in contusion area varies time-dependently after skeletal muscle contusion in mice and might be a reference index for muscle wound age estimation, and is involved in the repair and regeneration of skeletal muscle injury.
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Affiliation(s)
- S H Wen
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - Z L Tian
- Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - M Zhang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - M Z Zhang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - S Wang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - J W Chen
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - Y F Sun
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - C L Wang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China.,Liaoning Provincial People's Procuratorate, Shenyang 110033, China
| | - R Zhao
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - D W Guan
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
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11
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Chen JW, Wang PF, Zhang MZ, Zhang ZD, Cheng H, Sun YF, Wen SH, Guo XS, Zhao R, Guan DW. Relationship between Expression Changes of CB2R and Wound Age of Brain Contusion in Mice. Fa Yi Xue Za Zhi 2019; 35:136-142. [PMID: 31135105 DOI: 10.12116/j.issn.1004-5619.2019.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Indexed: 11/30/2022]
Abstract
Abstract Objective To investigate the expression of cannabinoid type 2 receptor (CB2R) at different time points after brain contusion and its relationship with wound age of mice. Methods A mouse brain contusion model was established with PCI3000 Precision Cortical Impactor. Expression changes of CB2R around the injured area were detected with immunohistochemical staining, immunofluorescent staining and Western blotting at different time points. Results Immunohistochemical staining results showed that only a few cells in the cerebral cortex of the sham operated group had CB2R positive expression. The ratio of CB2R positive cells gradually increased after injury and reached the peak twice at 12 h and 7 d post-injury, followed by a decrease to the normal level 28 d post-injury. The results of Western blotting were consistent with the immunohistochemical staining results. Immunofluorescent staining demonstrated that the changes of the ratio of CB2R positive cells in neurons, CB2R positive cells in monocytes and CB2R positive cells in astrocytes to the total cell number showed a single peak pattern, which peaked at 12 h, 1 d and 7 d post-injury, respectively. Conclusion The expression of CB2R after brain contusion in neurons, monocytes and astrocytes in mice suggests that it is likely to be involved in the regulation of the biological functions of those cells. The changes in CB2R are time-dependent, which suggests its potential applicability as a biological indicator for wound age estimation of brain contusion in forensic practice.
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Affiliation(s)
- J W Chen
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - P F Wang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - M Z Zhang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - Z D Zhang
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - H Cheng
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - Y F Sun
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - S H Wen
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - X S Guo
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - R Zhao
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
| | - D W Guan
- Center of Medico-legal Investigation, School of Forensic Medicine, China Medical University, Shenyang 110122, China.,Collaborative Laboratory of Intelligentized Forensic Science, Shenyang 110122, China
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Deng QW, Tan WC, Zhao BC, Wen SH, Shen JT, Xu M. Is goal-directed fluid therapy based on dynamic variables alone sufficient to improve clinical outcomes among patients undergoing surgery? A meta-analysis. Crit Care 2018; 22:298. [PMID: 30428928 PMCID: PMC6237035 DOI: 10.1186/s13054-018-2251-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 10/29/2018] [Indexed: 12/31/2022]
Abstract
Background Whether goal-directed fluid therapy based on dynamic predictors of fluid responsiveness (GDFTdyn) alone improves clinical outcomes in comparison with standard fluid therapy among patients undergoing surgery remains unclear. Methods PubMed, EMBASE, the Cochrane Library and ClinicalTrials.gov were searched for relevant studies. Studies comparing the effects of GDFTdyn with that of standard fluid therapy on clinical outcomes among adult patients undergoing surgery were considered eligible. Two analyses were performed separately: GDFTdyn alone versus standard fluid therapy and GDFTdyn with other optimization goals versus standard fluid therapy. The primary outcomes were short-term mortality and overall morbidity, while the secondary outcomes were serum lactate concentration, organ-specific morbidity, and length of stay in the intensive care unit (ICU) and in hospital. Results We included 37 studies with 2910 patients. Although GDFTdyn alone lowered serum lactate concentration (mean difference (MD) − 0.21 mmol/L, 95% confidence interval (CI) (− 0.39, − 0.03), P = 0.02), no significant difference was found between groups in short-term mortality (odds ratio (OR) 0.85, 95% CI (0.32, 2.24), P = 0.74), overall morbidity (OR 1.03, 95% CI (0.31, 3.37), P = 0.97), organ-specific morbidity, or length of stay in the ICU and in hospital. Analysis of trials involving the combination of GDFTdyn and other optimization goals (mainly cardiac output (CO) or cardiac index (CIx)) showed a significant reduction in short-term mortality (OR 0.45, 95% CI (0.24, 0.85), P = 0.01), overall morbidity (OR 0.41, 95% CI (0.28, 0.58), P < 0.00001), serum lactate concentration (MD − 0.60 mmol/L, 95% CI (− 1.04, − 0.15), P = 0.009), cardiopulmonary complications (cardiac arrhythmia (OR 0.58, 95% CI (0.37, 0.92), P = 0.02), myocardial infarction (OR 0.35, 95% CI (0.16, 0.76), P = 0.008), heart failure/cardiovascular dysfunction (OR 0.31, 95% CI (0.14, 0.67), P = 0.003), acute lung injury/acute respiratory distress syndrome (OR 0.13, 95% CI (0.02, 0.74), P = 0.02), pneumonia (OR 0.4, 95% CI (0.24, 0.65), P = 0.0002)), length of stay in the ICU (MD − 0.77 days, 95% CI (− 1.07, − 0.46), P < 0.00001) and in hospital (MD − 1.18 days, 95% CI (− 1.90, − 0.46), P = 0.001). Conclusions It was not the optimization of fluid responsiveness by GDFTdyn alone but rather the optimization of tissue and organ perfusion by GDFTdyn and other optimization goals that benefited patients undergoing surgery. Patients managed with the combination of GDFTdyn and CO/CI goals might derive most benefit. Electronic supplementary material The online version of this article (10.1186/s13054-018-2251-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qi-Wen Deng
- Department of Anesthesiology, the First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Wen-Cheng Tan
- Department of Endoscopy, Sun Yat-sen University Cancer Center, No. 651, Dongfeng East Road, Guangzhou, 510060, China
| | - Bing-Cheng Zhao
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, No. 1838, Guangzhou Avenue North, Guangzhou, 510515, China
| | - Shi-Hong Wen
- Department of Anesthesiology, the First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Jian-Tong Shen
- Department of Anesthesiology, the First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Miao Xu
- Department of Anesthesiology, the First Affiliated Hospital, Sun Yat-sen University, No.58, Zhongshan 2nd Road, Guangzhou, 510080, China.
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13
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Zhang SE, Wen SH, Su YX, Zheng GS, Wang DK, Liang YJ, Liao GQ. Synergistic effects of ischemic preconditioning and immediate post-conditioning in the protection against ischemia/reperfusion injury in rabbit submandibular glands. Eur J Oral Sci 2018; 126:282-291. [PMID: 30006965 DOI: 10.1111/eos.12540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2018] [Indexed: 12/23/2022]
Abstract
Submandibular gland autotransplantation is an effective approach for treating severe keratoconjunctivitis sicca. However, ischemia/reperfusion (I/R) injury, which inevitably occurs during transplantation, is involved in the hypofunction and structural damage that occur early after transplantation. Therefore, it is critical to identify effective strategies to ameliorate I/R injury in submandibular glands. In this study, we investigated the ability of immediate post-conditioning combined with ischemic preconditioning to attenuate I/R injury. We observed that after I/R injury, the level of reactive oxygen species was increased, inflammatory response was strengthened, and severe apoptosis had occurred. In addition, the salivary flow rate was greatly decreased. However, the pathogenesis of I/R injury was significantly ameliorated by ischemia post-conditioning or ischemia preconditioning treatments. In addition, the combination of ischemia preconditioning and post-conditioning achieved synergistic protective effects against I/R injury compared with ischemia preconditioning or ischemia post-conditioning alone. The secretion function was restored in the combination group. Furthermore, the combination treatment involved the same mechanisms of ischemia preconditioning or ischemia post-conditioning, including suppression of the inflammatory reaction and neutrophil accumulation, attenuation of oxidation stress, and inhibition of apoptosis. In conclusion, the combination of ischemia preconditioning and ischemia post-conditioning treatment is a simple and effective approach for treating I/R injury in submandibular glands.
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Affiliation(s)
- Si-En Zhang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Shi-Hong Wen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yu-Xiong Su
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
- Discipline of Oral & Maxillofacial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - Guang-Sen Zheng
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Di-Kan Wang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Yu-Jie Liang
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Gui-Qing Liao
- Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Sun Yat-Sen University, Guangzhou, China
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Zhang XY, Wen SH, Lin J. [Congenital unilateral pulmonary vein atresia in children: report of two cases]. Zhonghua Er Ke Za Zhi 2018; 56:308-309. [PMID: 29614574 DOI: 10.3760/cma.j.issn.0578-1310.2018.04.014] [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: 06/08/2023]
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Zhang XY, Liu ZM, Zhang HF, Li YS, Wen SH, Shen JT, Huang WQ, Liu KX. TGF-β1 improves mucosal IgA dysfunction and dysbiosis following intestinal ischaemia-reperfusion in mice. J Cell Mol Med 2016; 20:1014-23. [PMID: 26820382 PMCID: PMC4882980 DOI: 10.1111/jcmm.12789] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 12/13/2015] [Indexed: 12/14/2022] Open
Abstract
Intestinal ischaemia/reperfusion (I/R) severely disrupts gut barriers and leads to high mortality in the critical care setting. Transforming growth factor (TGF)-β1 plays a pivotal role in intestinal cellular and immune regulation. However, the effects of TGF-β1 on intestinal I/R injury remain unclear. Thus, we aimed to investigate the effects of TGF-β1 on gut barriers after intestinal I/R and the molecular mechanisms. Intestinal I/R model was produced in mice by clamping the superior mesenteric artery for 1 hr followed by reperfusion. Recombinant TGF-β1 was intravenously infused at 15 min. before ischaemia. The results showed that within 2 hrs after reperfusion, intestinal I/R disturbed intestinal immunoglobulin A class switch recombination (IgA CSR), the key process of mucosal IgA synthesis, and resulted in IgA dysfunction, as evidenced by decreased production and bacteria-binding capacity of IgA. Meanwhile, the disruptions of intestinal microflora and mucosal structure were exhibited. Transforming growth factor-β1 activated IgA CSR as evidenced by the increased activation molecules and IgA precursors. Strikingly, TGF-β1 improved intestinal mucosal IgA dysfunction, dysbiosis and epithelial damage at the early stage after reperfusion. In addition, SB-431542, a specific inhibitor of activating mothers against decapentaplegic homologue (SMAD) 2/3, totally blocked the inductive effect of TGF-β1 on IgA CSR and almost abrogated the above protective effects on intestinal barriers. Taken together, our study demonstrates that TGF-β1 protects intestinal mucosal IgA immunity, microbiota and epithelial integrity against I/R injury mainly through TGF-β receptor 1/SMAD 2/3 pathway. Induction of IgA CSR may be involved in the protection conferred by TGF-β1.
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Affiliation(s)
- Xu-Yu Zhang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zi-Meng Liu
- Surgical Intensive Care Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hu-Fei Zhang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yun-Sheng Li
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shi-Hong Wen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jian-Tong Shen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wen-Qi Huang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ke-Xuan Liu
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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16
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Zhang XY, Liu ZM, Zhang HF, Li YS, Wen SH, Shen JT, Liu KX. Decreased PD-1/PD-L1 Expression Is Associated with the Reduction in Mucosal Immunoglobulin A in Mice with Intestinal Ischemia Reperfusion. Dig Dis Sci 2015; 60:2662-9. [PMID: 25944714 DOI: 10.1007/s10620-015-3684-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 01/25/2015] [Accepted: 04/23/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND Intestinal ischemia/reperfusion (I/R) disrupts intestinal mucosal integrity and immunoglobulin A (IgA) generation. It has recently been shown that the programmed cell death-1 receptor (PD-1) plays a crucial role in regulating intestinal secreted IgA (sIgA). AIMS To evaluate changes in PD-1 and PD-ligand 1 (PD-L1) expression on Peyer's patches (PP) CD4(+) T cells and to investigate the correlation between PD-1/PD-L1 and intestinal IgA production/mucosal integrity in mice following intestinal I/R. METHODS I/R injury was induced by clamping the superior mesenteric artery for 1 h followed by 2-h reperfusion. PD-1/PD-L1 expression on PP CD4(+) T cells was measured in I/R and sham-operated mice. Additionally, transforming growth factor-β1 (TGF-β1) and interleukin-21 (IL-21) mRNA in CD4(+) T cells and IgA(+) and IgM(+) in PP B cells, as well as intestinal mucosal injury and sIgA levels, were assessed. RESULTS PD-1/PD-L1, TGF-β1, and IL-21 expression was down-regulated after intestinal I/R. Furthermore, IgA(+) B cells decreased and IgM(+) B cells increased in mice with intestinal I/R. Importantly, decreased PD-1/PD-L1 expression was correlated with increased mucosal injury and decreased IgA levels, as well as with decreased TGF-β1 and IL-21 expression. CONCLUSIONS Intestinal I/R inhibits PD-1/PD-L1 expression on PP CD4(+) T cells, which was associated with an impaired intestinal immune system and mechanical barriers. Our study indicates that PD-1/PD-L1 expression on CD4(+) T cells may be involved in the pathogenesis of intestinal I/R injury.
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Affiliation(s)
- Xu-Yu Zhang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, No. 58, Zhongshan 2nd Road, Guangzhou, 510080, China
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17
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Liu WF, Wen SH, Zhan JH, Li YS, Shen JT, Yang WJ, Zhou XW, Liu KX. Treatment with Recombinant Trichinella spiralis Cathepsin B-like Protein Ameliorates Intestinal Ischemia/Reperfusion Injury in Mice by Promoting a Switch from M1 to M2 Macrophages. J Immunol 2015; 195:317-28. [PMID: 25987744 DOI: 10.4049/jimmunol.1401864] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 04/14/2015] [Indexed: 01/18/2023]
Abstract
Intestinal ischemia/reperfusion (I/R) injury, in which macrophages play a key role, can cause high morbidity and mortality. The switch from classically (M1) to alternatively (M2) activated macrophages, which is dependent on the activation of STAT6 signaling, has been shown to protect organs from I/R injuries. In the current study, the effects of recombinant Trichinella spiralis cathepsin B-like protein (rTsCPB) on intestinal I/R injury and the potential mechanism related to macrophage phenotypes switch were investigated. In a mouse I/R model undergoing 60-min intestinal ischemia followed by 2-h or 7-d reperfusion, we demonstrated that intestinal I/R caused significant intestinal injury and induced a switch from M2 to M1 macrophages, evidenced by a decrease in levels of M2 markers (arginase-1 and found in inflammatory zone protein), an increase in levels of M1 markers (inducible NO synthase and CCR7), and a decrease in the ratio of M2/M1 macrophages. RTsCPB reversed intestinal I/R-induced M2-M1 transition and promoted M1-M2 phenotype switch evidenced by a significant decrease in M1 markers, an increase in M2 markers, and the ratio of M2/M1 macrophages. Meanwhile, rTsCPB significantly ameliorated intestinal injury and improved intestinal function and survival rate of animals, accompanied by a decrease in neutrophil infiltration and an increase in cell proliferation in the intestine. However, a selective STAT6 inhibitor, AS1517499, reversed the protective effects of rTsCPB by inhibiting M1 to M2 transition. These findings suggest that intestinal I/R injury causes a switch from M2 to M1 macrophages and that rTsCPB ameliorates intestinal injury by promoting STAT6-dependent M1 to M2 transition.
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Affiliation(s)
- Wei-Feng Liu
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Shi-Hong Wen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Jian-Hua Zhan
- State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou 510060, China; and
| | - Yun-Sheng Li
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Jian-Tong Shen
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Wen-Jing Yang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Xing-Wang Zhou
- Key Laboratory of Tropical Disease Control, Ministry of Education, Sun Yat-sen University Zhongshan School of Medicine, Guangzhou 510080, China
| | - Ke-Xuan Liu
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China;
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Ling YH, Zhu CM, Wen SH, Luo RZ, Li P, Cao Y, Rao HL, Lin SX, Cai MY. Pseudoepitheliomatous hyperplasia mimicking invasive squamous cell carcinoma in extranodal natural killer/T-cell lymphoma: a report of 34 cases. Histopathology 2015; 67:404-9. [PMID: 25619876 DOI: 10.1111/his.12656] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 01/19/2015] [Indexed: 11/28/2022]
Abstract
AIMS Pseudoepitheliomatous hyperplasia (PEH) is defined as a pattern of epidermal reaction. However, it has not yet been extensively documented in extranodal natural killer/T-cell lymphoma (ENKTL). The aim of our study was to analyse a series of ENKTLs concomitant with PEH mimicking squamous cell carcinoma (SCC). METHODS AND RESULTS We analysed 34 cases of ENKTL with PEH. In our study, the incidence of PEH was 3.8% in ENKTLs diagnosed over a 13-year period. All 34 cases presented with PEH, appearing as tongue-like projections of squamous epithelium into the underlying submucosa/dermis with variable depths and jagged borders. The keratinocytes sometimes showed a minor degree of cytological atypia, mostly in the stratum basale, and keratinocyte necrosis was absent. Atypical mitoses and a high nuclear/cytoplasmic ratio were absent. The submucosa and the squamous cell cords were also permeated by atypical lymphocytes. CONCLUSIONS ENKTL can be associated with PEH, and the atypical lymphoid cell population can be highly subtle, and therefore may be easily mistaken for SCC, leading to inappropriate therapy. A correct diagnosis requires awareness and recognition of this pitfall by recognizing the associated conditions listed above, which distinguish PEH from SCC.
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Affiliation(s)
- Yi-Hong Ling
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Chong-Mei Zhu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Shi-Hong Wen
- Department of Anaesthesiology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Rong-Zhen Luo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Peng Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Yun Cao
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Hui-Lan Rao
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Su-Xia Lin
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Mu-Yan Cai
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.,Department of Pathology, Sun Yat-sen University Cancer Centre, Guangzhou, China
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19
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Li BC, Xia ZQ, Li C, Liu WF, Wen SH, Liu KX. The incidence and risk factors of gastrointestinal complications after hepatectomy: a retrospective observational study of 1329 consecutive patients in a single center. J Surg Res 2014; 192:440-6. [DOI: 10.1016/j.jss.2014.06.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 05/04/2014] [Accepted: 06/06/2014] [Indexed: 12/20/2022]
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20
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Zhou ZB, Yang XY, Zhou X, Wen SH, Xiao Y, Feng X. Anesthetic manipulation in extreme airway stenosis: a case report. J Med Case Rep 2014; 8:292. [PMID: 25186092 PMCID: PMC4158769 DOI: 10.1186/1752-1947-8-292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2014] [Accepted: 07/21/2014] [Indexed: 01/21/2023] Open
Abstract
Introduction Anesthetic management with airway stenosis is challenging. Techniques for maintaining spontaneous respiration are required under sedative and analgesic conditions. Case presentation A 35-year-old Chinese woman presented to our hospital with difficulty breathing. Computerized tomography showed a tumor in the frontal area of her neck, which was causing extreme narrowing of her trachea. She was immediately scheduled for emergency surgery to remove the tumor. Fiberscopic intubation was carefully performed with dexmedetomidine sedation and remifentanil analgesia. Spontaneous respiration was successfully maintained. Conclusion In cases of extreme airway stenosis, intubation can be safely achieved with dexmedetomidine sedation and remifentanil analgesia.
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Affiliation(s)
| | | | | | | | | | - Xia Feng
- Department of Anesthesiology, First Affiliated Hospital of Sun Yat-Sen University, No, 58 Zhongshan 2nd Road, Guangzhou 510080, PR China.
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21
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Xia ZQ, Chen SQ, Yao X, Xie CB, Wen SH, Liu KX. Clinical benefits of dexmedetomidine versus propofol in adult intensive care unit patients: a meta-analysis of randomized clinical trials. J Surg Res 2013; 185:833-43. [DOI: 10.1016/j.jss.2013.06.062] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Revised: 06/24/2013] [Accepted: 06/26/2013] [Indexed: 10/26/2022]
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22
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Jiang N, Zheng YH, Chen XJ, Qiu C, Zhang XF, Wen SH, Bian GX. Molecular cloning and functional characterization of a mouse ccl6 analog gene in the rat. Genet Mol Res 2012; 11:3889-98. [PMID: 23212328 DOI: 10.4238/2012.november.12.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Suppression subtractive hybridization was used to analyze differential expression of genes in rat peritoneal macrophages after granulocyte macrophage colony-stimulating factor treatment. We identified and cloned the mouse C10 analog gene in the rat, and named it as ccl6. The full-length cDNA of rat ccl6 was 467 bp, which contains a single-open reading frame and encodes 116 amino acid residues. Compared with other C-C chemokines, the rat ccl6 gene had an unusual four-exon genome structure instead of the typical three exons, it had the highest homology with murine ccl6. The rat ccl6 gene was localized on chromosome 10, where most of the C-C chemokine superfamily members are located. The recombinant rat C-C chemokine ligand 6 (CCL6) protein was expressed by the pGEX4T-1 plasmid in Escherichia coli BL21. The purified recombinant protein had bioactivity similar to that of mouse CCL6, which is a chemoattractant for macrophages and lymphocytes, but not for neutrophils.
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Affiliation(s)
- N Jiang
- Department of Pharmacy, Beijing Military Region, General Hospital, Beijing, China.
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23
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Ma LD, Zhang Y, Wen SH, He YJ, Liu XS, Kang GF, Jiang JK. [Effects of matrine on oncogenicity of H22 cells modified by TIM2 gene in vivo]. Zhongguo Zhong Yao Za Zhi 2008; 33:1175-1179. [PMID: 18720871] [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: 05/26/2023]
Abstract
OBJECTIVE To investigate the effects of matrine on the anti-tumor efficiency of H22 murine hepatocarcinoma cell-based vaccine modified by TIM2 gene in vivo. METHOD The combinant eukaryotic expression vector pIRES2-EGFP-TIM2 was constructed and transfected into H22 cells by lipofectamin. The monoclone of the positive H22-TIM2 cells and negative control H22-EGFP cells were selected by G418 pressure and limited dilution method in turn. The H22 whole-cell-based vaccine were inoculated to establish the tumor-bearing mouse model, and its oncogenicity and immunogenicity were observed in vivo. Then the matrine was administered to the tumor-bearing mice inoculated by H22-TIM2 cells, H22-EGFP cells and H22 cells, and the inhibitory effect of matrine on tumor was studied. RESULT The co-expression of EGFP protein and TIM2 mRNA were detected in H22-TIM2 cells. The rate of tumor formation in mice injected of H22-TIM2 cells was 41%, lower than that of H22 cells and H22-EGFP cells injection (92%) in mice. The growth of tumor were significantly inhibited vaccinated with H22-TIM2 cells in mice. The inhibitory rate of tumor (IR) was 69.2% in mice of H22-TIM2 group, higher than that of mice treated with matrine and H22 cells injection, the later was 67.5%. Matrine could dramatically strengthen the anti-tumor efficiency of H22 cells modified by TIM2 gene, with the highest tumor inhibitory rate (IR) (90.6%) in all the experimental mice. The spleen index, populations of CD4-positive lymphocytes and the ratio of CD4-positive to CD8-positive lymphocytes of spleen in mice vaccinated of H22-TIM2 cells were obviously higher than those in the other groups. CONCLUSION The oncogenicity of H22 cells is markedly impaired after modified by TIM2 gene. Matrine can strengthen the inhibitory effect of H22-TIM2 cells on tumor in mice. These data give us important clues to further study the biological role of TIM2 gene in tumor immunity and explore the molecular mechanism of matrine in suppressing tumor.
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Affiliation(s)
- Ling-Di Ma
- Laboratory Center, the Second Changzhou Hospital, Affiliated Hospital of Nanjing Medical University, Changzhou 213003, China
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24
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Ma LD, Zhang Y, Wen SH, He YJ, Liu XS, Kang GF, Jiang JK. [Enhancing effect of matrine on the tumor-inhibition by TIM2 gene-modified hepatocarcinoma H22 cells in mice]. Zhonghua Zhong Liu Za Zhi 2008; 30:255-258. [PMID: 18788626] [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: 05/26/2023]
Abstract
OBJECTIVE To investigate the effects of matrine on the anti-tumor efficiency of TIM2 gene-modified murine hepatocarcinoma H22 cells. METHODS A combined eukaryotic expression vector pIRES2-EGFP-TIM2 was constructed and transfected into H22 cells by lipofectamin. The monoclone of positive H22-TIM2 cells and negative control H22-EGFP cells transfected with pIRES2-EGFP vector were selected by G418 pressure and limited dilution method in turn and were inoculated to establish the tumor-bearing mouse model. Next, matrine was administered to the tumor-bearing mice and the inhibitory effect of matrine was determined. RESULTS The co-expression of EGFP protein and TIM2 gene was detected in H22 cells selected after TIM2 gene transfecion. After subcutaneous injection of H22-TIM2 cells, the rate of tumor formation (41%) was lower than that of H22 cells and H22-EGFP cells injection (92%) in mice. The tumor growth was significantly inhibited in mice vaccinated with H22-TIM2 cells. After the experiment was completed, the volume of tumors in mice of H22-TIM2 group was 31.34 +/- 9.21 mm3, smaller than those in H22-EGFP group (98.25 +/- 25.23)mm3 and H22 cells group (114.08 +/- 36.45)mm3 (P < 0.01). Matrine dramatically enhanced the anti-tumor efficiency of TIM2 gene-modified H22 cells, with the highest tumor inhibitory rate (IR) 90.6% among the H22-TIM2 group, matrine treatment group and H22-EGFP cells combined with matrine treatment group (69.2%, 67.5% and 70.8%, respectively) in the experimental mice. CONCLUSION The tumorigenesity of H22 cells has been markedly impaired after modification by TIM2 gene. Matrine can enhance its inhibitory effect on tumors of H22-TIM2 cells in vivo. These data indicate importance to further study on the biological role of TIM2 gene in tumor immunity and explore the molecular mechanism of matrine in suppressing of tumor growth.
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Affiliation(s)
- Ling-Di Ma
- Central Laboratory, Second Changzhou People's Hospital Affiliated to Nanjing Medical University, Changzhou 213003, China
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25
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Wen SH, Hsiao CK. A grid-search algorithm for optimal allocation of sample size in two-stage association studies. J Hum Genet 2007; 52:650-658. [PMID: 17603750 DOI: 10.1007/s10038-007-0159-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2006] [Accepted: 05/10/2007] [Indexed: 10/23/2022]
Abstract
Multiple testing occurs commonly in genome-wide association studies with dense SNPs map. With numerous SNPs, not only the genotyping cost and time increase dramatically, many family wise error rate (FWER) controlling methods may fail for being too conservative and of less power when detecting SNPs associated with disease is of interest. Recently, several powerful two-stage strategies for multiple testing have received great attention. In this paper, we propose a grid-search algorithm for an optimal design of sample size allocation for these two-stage procedures. Two types of constraints are considered, one is the fixed overall cost and the other is the limited sample size. With the proposed optimal allocation of sample size, bearable false-positive results and larger power can be achieved to meet the limitations. The simulations indicate, as a general rule, allocating at least 80% of the total cost in stage one provides maximum power, as opposed to other methods. If per-genotyping cost in stage two differs from that in stage one, downward proportion of the total cost in earlier stage maintains good power. For limited total sample size, evaluating all the markers on 55% of the subjects in the first stage provides the maximum power while the cost reduction is approximately 43%.
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Affiliation(s)
- S H Wen
- Department of Public Health, College of Medicine, Tzu-Chi University, Hualien, 97004, Taiwan.
| | - C K Hsiao
- Department of Public Health and Institute of Epidemiology, College of Public Health, National Taiwan University, Taipei, 100, Taiwan
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26
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Huang CY, Wen SH, Yu MD. [Enteral nutrition in the severely head injured patients]. Zhonghua Hu Li Za Zhi 1996; 31:435-8. [PMID: 9295496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study evaluated the effect of modified element diet as early nutritional support in 20 severe head-injured patients. The study group (20 cases) was fed gastrically with the element diet of dextrin as glycogen by a nasal feeding tube, and the control group (20 cases) was nutritional supported with common method. The enteral nutrition (EN) was started within 5.0 +/- 2. 1 days post injury for study group versus 9.1 #+/- 4.6 days for control group (P < 0.05). The serum albumin levels of the study group rose in the third week post injury, the data of the forth week was slightly higher than that of the first week. In control group, the serum albumin levels reduced continuously within four weeks post injury. The serum glucose levels of the study group was significantly lower than that of the control group on the fifth day post injury (P < 0.05). 45% patients in the study group had diarrhea. This study showed that the modified element diet can be helpful for the early enteral nutrition and beneficial to improve the nutritional condition of the severe head-injured patients.
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Affiliation(s)
- C Y Huang
- Second military Medical University PLA. Shang Hai
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27
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Chen SP, Bei L, Wen SH. [Study on omeprazole 20 mg twice weekly in prevention of duodenal ulcer relapse]. Zhonghua Nei Ke Za Zhi 1993; 32:538-41. [PMID: 8269784] [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
The aim of this study is to propose a regimen of omeprazole 20 mg twice weekly for the prevention of duodenal ulcer (DU) relapse. 257 endoscopically verified DU patients entered this study. They were divided into four groups: (1) Group A, 68 patients stopped treatment after healing of DU during treatment of cimetidine 800 mg at night. (2) Group B, 72 patients healed DU after treatment of omeprazole 20 daily. Then anti-ulcer drug was withdrawn. (3) Group C, after healing of DU, 54 patients received a maintenance dosage of cimetidine 400 at night for up to 1 year. (4) Group D, after healing of DU, 63 patients received omeprazole 20 mg twice weekly (every Monday and Thursday) for up to 1 year. All the patients were followed in out-patients department for assessment of symptomatic response and side effect. Endoscopic examination were performed in those patients when any symptom related to the upper gastrointestinal tract appeared. The cumulative recurrence rates of Group A to Group D at 6 months were 44.1%, 23.6%, 22.2% and 4.8%, and that at 12 months were 76.5%, 36.1%, 27.8% and 6.3% respectively. The relapse rate of patients with omeprazole 20 mg twice a week was significantly lower than that of other groups at either 6 or 12 months. In patients with maintenance therapy of cimetidine, DU recurred more rapidly among smokers than nonsmokers, but there is no significant difference between smokers and nonsmokers receiving maintenance therapy of omeprazole.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- S P Chen
- Department of Medicine, Peking Union Medical College Hospital, Beijing
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28
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Sun G, Pan GZ, Ma F, Wen SH, Du SF. [Effect of CCK receptor antagonists on plasma CCK bioassay]. Sheng Li Xue Bao 1992; 44:609-13. [PMID: 1302379] [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: 12/26/2022]
Abstract
Fasting and postprandial plasma CCK levels of 102 normal subjects were measured by bioassay with dispersed rat pancreatic acini. The reference values ranged from 0 to 4.2 pmol/L (CCK-8 equivalents) for fasting and from 1.1 to 13.5 pmol/L for postprandial state. There was no significant difference between male and female, or in different age groups. The effects of CCK receptor antagonists of 3 different categories on CCK bioactivity in plasma measured by the bioassay were investigated. L 364,718 (5 nmol/L), proglumide (1.0 mmol/L), or Bt2-cGMP (0.1 mmol/L) was either extracted by SEP-PAK C18 cartridges together with human plasma containing 8 pmol/L of CCK-8, or added into the plasma extracts before the assay. The CCK bioactivity was inhibited by all of the 3 CCK antagonists. The action of L364,718 could be eliminated by the procedure of plasma extraction, but not of proglumide or Bt2-cGMP. It was suggested that CCK bioassay can be used even if L364,718 was administered. However, CCK cannot be measured accurately if there are proglumide or Bt2-cGMP in the plasma.
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Affiliation(s)
- G Sun
- Beijing Union Medical College Hospital
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29
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Chen SP, Chen J, Wen SH. [Protective effect of colloidal bismuth subcitrate on gastric mucosal lesion induced by aspirin]. Zhonghua Nei Ke Za Zhi 1990; 29:293-5, 318. [PMID: 2242692] [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: 12/30/2022]
Abstract
This study was designed to investigate the protective effect of colloidal bismuth subcitrate (CBS) on aspirin-induced gastric mucosal lesion 20 patients with arthralgia were allocated into this study. All of them were free of gastrointestinal symptom and their gastric mucosa were nearly normal under gastroendoscopic observation. The first group of 10 patients received orally aspirin 1.5 qid for 4 days. The second group also of 10 patients was treated with CBS 120 mg qid and after 2 days they received aspirin and CBS simultaneously in the dosage mentioned above for another 4 days. Before and after treatment, the patients of both groups were examined endoscopically. After treatment, the mucosal inflammation was much less in the second group than that in the first group. The prostaglandin E2 concentration of antral mucosa in the first group was reduced significantly after administration of aspirin alone, while that in the second group was slightly increased after a combined treatment of aspirin and CBS. The results demonstrate that CBS is an effective agent in prevention of gastric lesion induced by aspirin and prostaglandin E may be involved in this mucosal protective effect.
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Affiliation(s)
- S P Chen
- Department of Medicine, Peking Union Medical College Hospital, Beijing
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30
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Chen YF, Feng ZT, Wen SH, Lu GJ. Effect of vasoactive intestinal peptide, somatostatin, neurotensin, cholecystokinin octapeptide, and secretin on intestinal absorption of amino acid in rat. Dig Dis Sci 1987; 32:1125-9. [PMID: 2888609 DOI: 10.1007/bf01300199] [Citation(s) in RCA: 13] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The effects of vasoactive intestinal peptide (VIP), somatostatin (SRIF), neurotensin (NT), cholecystokinin octapeptide (CCK-8), and secretin (SEC) on the intestinal absorption of amino acid were investigated. Six groups of Wistar rats were studied: (1) controls; (2) VIP treated; (3) SRIF treated; (4) NT treated; (5) CCK-8 treated; (6) SEC treated. [3H]Leucine was given intraluminally through a cannula at the ligament of Treitz, a number of blood samples were obtained through a superior mesenteric vein catheter 1-60 min after administration of [3H]leucine, and the radioactivity of plasma was measured to evaluate the absorption of [3H]leucine. It was shown that VIP and SRIF significantly inhibited the absorption of [3H]leucine (by 59.1% and 38.7%, respectively), whereas NT, CCK-8, and SEC significantly enhanced absorption (by 44.2%, 49.6%, and 39.1%, respectively). Radioimmunoassays of VIP, SRIF, and NT showed that at least some of the hormones or peptides exerted their effects on absorption of leucine at or near their physiological concentrations.
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Affiliation(s)
- Y F Chen
- Department of Medicine, Peking Union Medical College, Beijing, China
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31
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Lu XH, Chen MZ, Bi ZH, Lu GJ, Fan J, Wen SH. [Secretin test and its applications]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1984; 6:372-4. [PMID: 6241092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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32
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Yu ZJ, Zhang XQ, Chen MZ, Pan GZ, Bi ZH, Lu GJ, Wen SH. [Clinical significance of serum gastrin determination]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1982; 4:358-62. [PMID: 6221815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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33
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Pan GZ, Wen SH. [Comparison of pentagastrin test with augmented histamine test for gastric analysis (author's transl)]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1981; 3:204-6. [PMID: 6459185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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34
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Pan GZ, Chen MC, Dai XZ, Bi ZH, Wen SH, Yao HC, Kang BC. [A pilot study of mass survey for gastric diseases (author's transl)]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1980; 2:227-31. [PMID: 6458372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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