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
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
目的探讨各种病因所致胸腔积液可溶性髓系细胞触发受体1(sTREM-1)的水平及意义。方法分别收集细菌性胸腔积液(n=12)、结核性胸腔积液(n=31)、恶性肿瘤胸腔积液(n=35)和漏出液(n=15)患者的胸水和外周血标本,采用酶联免疫吸附测定法检测...目的探讨各种病因所致胸腔积液可溶性髓系细胞触发受体1(sTREM-1)的水平及意义。方法分别收集细菌性胸腔积液(n=12)、结核性胸腔积液(n=31)、恶性肿瘤胸腔积液(n=35)和漏出液(n=15)患者的胸水和外周血标本,采用酶联免疫吸附测定法检测胸水和血清中sTREM-1的浓度。结果 4种类型的胸腔积液其胸水sTREM-1浓度均高于血清sTREM-1浓度(P<0.05或<0.01)。细菌性胸腔积液其胸水和血清sTREM-1浓度均明显高于结核性胸腔积液、恶性肿瘤胸腔积液和漏出液,胸水sTREM-1[M(QR)]2 616.9(2 096.8)ng/L vs 286.0(348.0)ng/L、496.8(1 160.5)ng/L、102.3(266.5)ng/L(P<0.01),血清sTREM-1 38.1(28.1)ng/L vs 0.2(19.8)ng/L0、.0(14.3)ng/L1、5.7(67.6)ng/L(P<0.01)。结论胸膜疾病胸腔积液TREM-1表达水平增高,以胸膜细菌感染时增高最明显,胸水sTREM-1浓度可以作为判断细菌感染的参考指标。展开更多
目的探讨髓样细胞触发受体1(Triggering receptor expressed on myeloid cells-1,TREM-1)诊断脓毒症的准确性。方法计算机检索CNKI、万方、维普、MEDLINE、EMBASE、COCHRANE图书馆等数据库,检索时间为建库至2012年9月,筛选TREM-1诊断脓...目的探讨髓样细胞触发受体1(Triggering receptor expressed on myeloid cells-1,TREM-1)诊断脓毒症的准确性。方法计算机检索CNKI、万方、维普、MEDLINE、EMBASE、COCHRANE图书馆等数据库,检索时间为建库至2012年9月,筛选TREM-1诊断脓毒症的文献。使用Meta-Disc 1.4和Stata version 12.0软件检验每篇文献间的异质性,并根据异质性结果选择相应效应模型进行加权定量合并,计算敏感度、特异度等指标。绘制受试者工作特征曲线(SROC)并计算曲线下面积(AUC)。使用QUADAS工具对纳入文献进行质量评价。结果最终纳入8篇文献行meta分析,TREM-1诊断脓毒症的合并敏感度和特异度分别为0.69(95%CI:0.66～0.72)和0.74(95%CI:0.70～0.77),合并阳性似然比(PLR)和阴性似然比(NLR)分别为3.36(95%CI:2.23～5.07)和0.29(95%CI:0.19～0.43),诊断比值比为14.81(95%CI:6.14～35.71),AUC为0.87,Q指数为0.80。结论 TREM-1对于脓毒症的诊断具有一定的价值,还需进一步研究其诊断脓毒症的准确性。展开更多
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.
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.
文摘目的探讨各种病因所致胸腔积液可溶性髓系细胞触发受体1(sTREM-1)的水平及意义。方法分别收集细菌性胸腔积液(n=12)、结核性胸腔积液(n=31)、恶性肿瘤胸腔积液(n=35)和漏出液(n=15)患者的胸水和外周血标本,采用酶联免疫吸附测定法检测胸水和血清中sTREM-1的浓度。结果 4种类型的胸腔积液其胸水sTREM-1浓度均高于血清sTREM-1浓度(P<0.05或<0.01)。细菌性胸腔积液其胸水和血清sTREM-1浓度均明显高于结核性胸腔积液、恶性肿瘤胸腔积液和漏出液,胸水sTREM-1[M(QR)]2 616.9(2 096.8)ng/L vs 286.0(348.0)ng/L、496.8(1 160.5)ng/L、102.3(266.5)ng/L(P<0.01),血清sTREM-1 38.1(28.1)ng/L vs 0.2(19.8)ng/L0、.0(14.3)ng/L1、5.7(67.6)ng/L(P<0.01)。结论胸膜疾病胸腔积液TREM-1表达水平增高,以胸膜细菌感染时增高最明显,胸水sTREM-1浓度可以作为判断细菌感染的参考指标。
文摘目的探讨髓样细胞触发受体1(Triggering receptor expressed on myeloid cells-1,TREM-1)诊断脓毒症的准确性。方法计算机检索CNKI、万方、维普、MEDLINE、EMBASE、COCHRANE图书馆等数据库,检索时间为建库至2012年9月,筛选TREM-1诊断脓毒症的文献。使用Meta-Disc 1.4和Stata version 12.0软件检验每篇文献间的异质性,并根据异质性结果选择相应效应模型进行加权定量合并,计算敏感度、特异度等指标。绘制受试者工作特征曲线(SROC)并计算曲线下面积(AUC)。使用QUADAS工具对纳入文献进行质量评价。结果最终纳入8篇文献行meta分析,TREM-1诊断脓毒症的合并敏感度和特异度分别为0.69(95%CI:0.66～0.72)和0.74(95%CI:0.70～0.77),合并阳性似然比(PLR)和阴性似然比(NLR)分别为3.36(95%CI:2.23～5.07)和0.29(95%CI:0.19～0.43),诊断比值比为14.81(95%CI:6.14～35.71),AUC为0.87,Q指数为0.80。结论 TREM-1对于脓毒症的诊断具有一定的价值,还需进一步研究其诊断脓毒症的准确性。
