Intracerebral hemorrhage(ICH)is a common severe emergency in neurosurgery,causing tremendous economic pressure on families and society and devastating effects on patients both physically and psychologically,especially...Intracerebral hemorrhage(ICH)is a common severe emergency in neurosurgery,causing tremendous economic pressure on families and society and devastating effects on patients both physically and psychologically,especially among patients with poor functional outcomes.ICH is often accompanied by decreased consciousness and limb dysfunction.This seriously affects patients’ability to live independently.Although rapid advances in neurosurgery have greatly improved patient survival,there remains insufficient evidence that surgical treatment significantly improves long-term outcomes.With in-depth pathophysiological studies after ICH,increasing evidence has shown that secondary injury after ICH is related to long-term prognosis and that the key to secondary injury is various immune-mediated neuroinflammatory reactions after ICH.In basic and clinical studies of various systemic inflammatory diseases,triggering receptor expressed on myeloid cells 1/2(TREM-1/2),and the TREM receptor family is closely related to the inflammatory response.Various inflammatory diseases can be upregulated and downregulated through receptor intervention.How the TREM receptor functions after ICH,the types of results from intervention,and whether the outcomes can improve secondary brain injury and the long-term prognosis of patients are unknown.An analysis of relevant research results from basic and clinical trials revealed that the inhibition of TREM-1 and the activation of TREM-2 can alleviate the neuroinflammatory immune response,significantly improve the long-term prognosis of neurological function in patients with cerebral hemorrhage,and thus improve the ability of patients to live independently.展开更多
BACKGROUND:Triggering receptor expressed on myeloid cells-1 (TREM-1) in the intestine was upregulated and correlated with disease activity in inflammatory bowel diseases. Membrane- bound TREM-1 protein is increased...BACKGROUND:Triggering receptor expressed on myeloid cells-1 (TREM-1) in the intestine was upregulated and correlated with disease activity in inflammatory bowel diseases. Membrane- bound TREM-1 protein is increased in the pancreas, liver and kidneys of patients with severe acute pancreatitis (SAP), suggesting that TREM-1 may act as an important mediator of inflammation and subsequent extra-pancreatic organ injury. This study aimed to investigate the relationship between the expression of TREM-1 in intestinal tissue and intestinal barrier dysfunction in SAP. METHODS: Sixty-four male Wistar rats were randomly divided into a sham operation group (SO group, n=32) and a SAP group (n=32). A SAP model was established by retrograde injection of 5% sodium deoxycholate into the bile-pancreatic duct. Specimens were taken from blood and intestinal tissue 2, 6, 12, and 48 hours after operation respectively. The levels of D-lactate, diamine oxidase (DAO) and endotoxin in serum were measured using an improved spectro-photometric method. The expression levels of TREM-1, interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) mRNA in terminal ileum were detected by real-time reverse transcription-polymerase chain reaction (RT-PCR). Specimens of the distal ileum were taken to determine pathological changes by a validated histology score. The serum levels of D-lactate, DAO and endotoxin were significantly increased in each subgroup of SAP compared with the SO group (P〈0.01, P〈0.05). The expression levels of TREM-1, IL-1β and TNF-a mRNA in the terminal ileum in each subgroup of SAP were significantly higher than those in the SO group (P〈0.01, P〈0.05). The expression level of TREM-lmRNA was positively correlated with IL-1βand TNF-α mRNA (r=0.956, P=0.044; r=0.986, P=0.015), but the correlation was not found between IL-1β mRNA and TNF-a mRNA (P=0.133). Compared to the SO group, the pathological changes were aggravated significantly in the SAP group. CONCLUSIONS: The expression level of TREM-1 in intestinal tissue of rats with SAP was elevated, leading to the release of inflammatory mediators and intestinal mucosal injury. This finding indicates that TREM-I might play an important role in the development of intestinal barrier dysfunction in rats with SAP.展开更多
BACKGROUND: Triggering receptor expressed on myeloid cells-1(TREM-1) is a cell surface receptor expressed on neutrophils and monocytes. TREM-1 acts to amplify infl ammation and serves as a critical mediator of infl am...BACKGROUND: Triggering receptor expressed on myeloid cells-1(TREM-1) is a cell surface receptor expressed on neutrophils and monocytes. TREM-1 acts to amplify infl ammation and serves as a critical mediator of infl ammatory response in the context of sepsis. To date, the predisposition of TREM-1 gene polymorphisms to septic shock has not been reported. This study was designed to investigate whether TREM-1 genomic variations are associated with the development of septic shock.METHODS: We genotyped two TREM-1 single nucleotide polymorphisms(SNPs, rs2234237 and rs2234246) and evaluated the relationships between these SNPs and septic shock on susceptibility and prognosis.RESULTS: TREM-1 rs2234246 A allele in the promoter region was signifi cantly associated with the susceptibility of septic shock in recessive model(AA, OR=3.10, 95%CI 1.15 to 8.32, P=0.02), and in codominant model(AG, OR=0.72, 95%CI 0.43–1.19, P=0.02; AA, OR=2.71, 95%CI 1.00–7.42; P=0.03). However, in three inherited models(dominant model, recessive model, and codominant model), none of the assayed loci was signif icantly associated with the prognosis of septic shock. The nonsurvivor group demonstrated higher plasma IL-6 levels(99.7±34.7 pg/mL vs. 61.2±26.5 pg/mL, P<0.01) than the survivor group. Plasma concentrations of IL-6 among the three genotypes of rs2234246 were AA 99.4±48.9 pg/m L, AG 85.4±43 pg/m L, and GG 65.3±30.7 pg/m L(P<0.01). The plasma concentrations of IL-6 in patients with AA genotypes were signifi cantly higher than those in patients with GG genotypes(P<0.01).CONCLUSION: TREM-1 genetic polymorphisms rs2234246 may be significantly correlated only with susceptibility to septic shock in the Chinese Han population.展开更多
目的探讨血清高迁移率族蛋白B1(high mobility group protein B1,HMGB1)、可溶性髓系细胞触发受体1(soluble myeloid cell trigger receptor-1,sTREM-1)联合检测对脓毒症并发急性肾损伤(acute kidney injury,AKI)的诊断价值。方法回顾...目的探讨血清高迁移率族蛋白B1(high mobility group protein B1,HMGB1)、可溶性髓系细胞触发受体1(soluble myeloid cell trigger receptor-1,sTREM-1)联合检测对脓毒症并发急性肾损伤(acute kidney injury,AKI)的诊断价值。方法回顾性选择徐州市中心医院2020年1月1日至2022年1月31日收治的156例脓毒症患者,另选取同期68例体检健康者为对照组。对比两组受试者血清HMGB1、sTREM-1水平,多因素Logistic回归分析脓毒症并发AKI的影响因素,受试者工作特征曲线分析血清HMGB1、sTREM-1水平对脓毒症并发AKI的诊断价值。结果脓毒症组患者血清HMGB1[172530(133870,204010)ng/L比83720(63480,99870)ng/L]、sTREM-1[(49.56±8.03)ng/L比(24.96±5.24)ng/L]水平明显高于对照组(P<0.05);多因素Logistic分析显示,血肌酐(OR=1.079,95%CI:1.037~1.122)、HMGB1(OR=1.933,95%CI:1.376~2.714)、sTREM-1(OR=1.201,95%CI:1.101~1.309)为脓毒症并发AKI的独立危险因素(P<0.05);受试者工作特征曲线显示,HMGB1联合sTREM-1[曲线下面积(area under the curve,AUC)=0.928,95%CI:0.876~0.963]诊断脓毒症并发AKI的敏感度、特异度、准确度高于HMGB1(AUC=0.790,95%CI:0.718~0.851)、sTREM-1(AUC=0.778,95%CI:0.705~0.840)诊断。结论脓毒症患者血清HMGB1、sTREM-1水平明显增高,是脓毒症并发AKI的独立危险因素。展开更多
基金Supported by Shanxi Provincial Key Research and Development Plan Project,No.2020ZDLSF01-02Doctor Foundation of the Second Affiliated Hospital of Xi’an Medical University,No.X2Y-R11.
文摘Intracerebral hemorrhage(ICH)is a common severe emergency in neurosurgery,causing tremendous economic pressure on families and society and devastating effects on patients both physically and psychologically,especially among patients with poor functional outcomes.ICH is often accompanied by decreased consciousness and limb dysfunction.This seriously affects patients’ability to live independently.Although rapid advances in neurosurgery have greatly improved patient survival,there remains insufficient evidence that surgical treatment significantly improves long-term outcomes.With in-depth pathophysiological studies after ICH,increasing evidence has shown that secondary injury after ICH is related to long-term prognosis and that the key to secondary injury is various immune-mediated neuroinflammatory reactions after ICH.In basic and clinical studies of various systemic inflammatory diseases,triggering receptor expressed on myeloid cells 1/2(TREM-1/2),and the TREM receptor family is closely related to the inflammatory response.Various inflammatory diseases can be upregulated and downregulated through receptor intervention.How the TREM receptor functions after ICH,the types of results from intervention,and whether the outcomes can improve secondary brain injury and the long-term prognosis of patients are unknown.An analysis of relevant research results from basic and clinical trials revealed that the inhibition of TREM-1 and the activation of TREM-2 can alleviate the neuroinflammatory immune response,significantly improve the long-term prognosis of neurological function in patients with cerebral hemorrhage,and thus improve the ability of patients to live independently.
基金The study was supported by a grant from the National Natural Science Foundation of China (81070287).
文摘BACKGROUND:Triggering receptor expressed on myeloid cells-1 (TREM-1) in the intestine was upregulated and correlated with disease activity in inflammatory bowel diseases. Membrane- bound TREM-1 protein is increased in the pancreas, liver and kidneys of patients with severe acute pancreatitis (SAP), suggesting that TREM-1 may act as an important mediator of inflammation and subsequent extra-pancreatic organ injury. This study aimed to investigate the relationship between the expression of TREM-1 in intestinal tissue and intestinal barrier dysfunction in SAP. METHODS: Sixty-four male Wistar rats were randomly divided into a sham operation group (SO group, n=32) and a SAP group (n=32). A SAP model was established by retrograde injection of 5% sodium deoxycholate into the bile-pancreatic duct. Specimens were taken from blood and intestinal tissue 2, 6, 12, and 48 hours after operation respectively. The levels of D-lactate, diamine oxidase (DAO) and endotoxin in serum were measured using an improved spectro-photometric method. The expression levels of TREM-1, interleukin-1β (IL-1β), and tumor necrosis factor-α (TNF-α) mRNA in terminal ileum were detected by real-time reverse transcription-polymerase chain reaction (RT-PCR). Specimens of the distal ileum were taken to determine pathological changes by a validated histology score. The serum levels of D-lactate, DAO and endotoxin were significantly increased in each subgroup of SAP compared with the SO group (P〈0.01, P〈0.05). The expression levels of TREM-1, IL-1β and TNF-a mRNA in the terminal ileum in each subgroup of SAP were significantly higher than those in the SO group (P〈0.01, P〈0.05). The expression level of TREM-lmRNA was positively correlated with IL-1βand TNF-α mRNA (r=0.956, P=0.044; r=0.986, P=0.015), but the correlation was not found between IL-1β mRNA and TNF-a mRNA (P=0.133). Compared to the SO group, the pathological changes were aggravated significantly in the SAP group. CONCLUSIONS: The expression level of TREM-1 in intestinal tissue of rats with SAP was elevated, leading to the release of inflammatory mediators and intestinal mucosal injury. This finding indicates that TREM-I might play an important role in the development of intestinal barrier dysfunction in rats with SAP.
基金supported by Science&Technology Pillar Program of Guangdong Province(2009BAI86B03)
文摘BACKGROUND: Triggering receptor expressed on myeloid cells-1(TREM-1) is a cell surface receptor expressed on neutrophils and monocytes. TREM-1 acts to amplify infl ammation and serves as a critical mediator of infl ammatory response in the context of sepsis. To date, the predisposition of TREM-1 gene polymorphisms to septic shock has not been reported. This study was designed to investigate whether TREM-1 genomic variations are associated with the development of septic shock.METHODS: We genotyped two TREM-1 single nucleotide polymorphisms(SNPs, rs2234237 and rs2234246) and evaluated the relationships between these SNPs and septic shock on susceptibility and prognosis.RESULTS: TREM-1 rs2234246 A allele in the promoter region was signifi cantly associated with the susceptibility of septic shock in recessive model(AA, OR=3.10, 95%CI 1.15 to 8.32, P=0.02), and in codominant model(AG, OR=0.72, 95%CI 0.43–1.19, P=0.02; AA, OR=2.71, 95%CI 1.00–7.42; P=0.03). However, in three inherited models(dominant model, recessive model, and codominant model), none of the assayed loci was signif icantly associated with the prognosis of septic shock. The nonsurvivor group demonstrated higher plasma IL-6 levels(99.7±34.7 pg/mL vs. 61.2±26.5 pg/mL, P<0.01) than the survivor group. Plasma concentrations of IL-6 among the three genotypes of rs2234246 were AA 99.4±48.9 pg/m L, AG 85.4±43 pg/m L, and GG 65.3±30.7 pg/m L(P<0.01). The plasma concentrations of IL-6 in patients with AA genotypes were signifi cantly higher than those in patients with GG genotypes(P<0.01).CONCLUSION: TREM-1 genetic polymorphisms rs2234246 may be significantly correlated only with susceptibility to septic shock in the Chinese Han population.
文摘目的探讨血清高迁移率族蛋白B1(high mobility group protein B1,HMGB1)、可溶性髓系细胞触发受体1(soluble myeloid cell trigger receptor-1,sTREM-1)联合检测对脓毒症并发急性肾损伤(acute kidney injury,AKI)的诊断价值。方法回顾性选择徐州市中心医院2020年1月1日至2022年1月31日收治的156例脓毒症患者,另选取同期68例体检健康者为对照组。对比两组受试者血清HMGB1、sTREM-1水平,多因素Logistic回归分析脓毒症并发AKI的影响因素,受试者工作特征曲线分析血清HMGB1、sTREM-1水平对脓毒症并发AKI的诊断价值。结果脓毒症组患者血清HMGB1[172530(133870,204010)ng/L比83720(63480,99870)ng/L]、sTREM-1[(49.56±8.03)ng/L比(24.96±5.24)ng/L]水平明显高于对照组(P<0.05);多因素Logistic分析显示,血肌酐(OR=1.079,95%CI:1.037~1.122)、HMGB1(OR=1.933,95%CI:1.376~2.714)、sTREM-1(OR=1.201,95%CI:1.101~1.309)为脓毒症并发AKI的独立危险因素(P<0.05);受试者工作特征曲线显示,HMGB1联合sTREM-1[曲线下面积(area under the curve,AUC)=0.928,95%CI:0.876~0.963]诊断脓毒症并发AKI的敏感度、特异度、准确度高于HMGB1(AUC=0.790,95%CI:0.718~0.851)、sTREM-1(AUC=0.778,95%CI:0.705~0.840)诊断。结论脓毒症患者血清HMGB1、sTREM-1水平明显增高,是脓毒症并发AKI的独立危险因素。