宁夏回、汉族脂联素基因+45位点多态性及其血清水平与代谢综合征的相关性

目的探讨宁夏回、汉族人群脂联素(APN)基因+45位核苷酸T/G多态性与代谢综合征(MS)的相关性。方法收集回族MS患者207例(MS组)、正常对照组98例,和汉族MS患者136例(MS组)、正常对照组102例(对照组),采用聚合酶链反应-限制性片段长度(PCR-RFLP)多态性技术和酶联免疫吸附法(ELISA),对各组APN基因+45位核苷酸T/G多态性及其血清APN浓度进行检测。结果回、汉族MS组间与对照组间基因型频率及等位基因频率均差异有统计学意义(P<0.05)。回族MS组GG基因型频率及G等位基因频率高于回族对照组(均P<0.05)。汉族MS组与汉族对照组间基因型频率及等位基因频率差异均无统计学意义(P>0.05)。回、汉族MS组血清APN水平均低于其对照组(P<0.05),回族TG+GG基因型血清APN水平低于TT基因型者,汉族TT基因型血清APN水平低于TG+GG基因型者。Logistic回归分析显示,APN基因45T/G多态性是回族MS的危险因素。结论 APN基因+45T/G多态性在回、汉族人群之间存在差异;回、汉族MS组血清APN均低于正常人群;APN基因+45T/G多态性与宁夏回族人群MS发病具有相关性,与汉族MS无相关性。     

重症监护病房中急性肾损伤分级的临床意义

目的探讨重症监护病房中急性肾损伤(AKI)的急性肾损伤网络(AKIN)分级、预后及其相关因素。方法回顾性收集145例符合AKIN标准的急性肾损伤患者,根据其严重程度对其进行AKIN分级,收集其病因、一般资料、APACHE II评分及转归等并进行统计分析。结果 ICU病房中AKI的主要病因为严重脓毒症及脓毒性休克(53.8%);APACHE II评分及病死率随着AKI的严重程度增加而增加(P<0.05),APACHE II评分及AKIN标准预测死亡率的ROC曲线的AUC分别为为0.785和0.679(P<0.05),对患者病情的评估有一定的作用。结论 AKIN标准与AKI患者转归密切相关,对评估患者肾功能损伤程度及预测预后有重要的指导价值。     

miR-34c-3p inhibits cell proliferation,migration and invasion of hepatocellular carcinoma by targeting MARCKS

Recent studies have shown that microRNA-34c-3p (miR-34c-3p) is down-regulated in various types of cancers and involved in tumor growth, invasion and metastasis. However, the roles of miR-34c-3p in hepatocellular carcinoma (HCC) are poorly understood. In this study, the expression profile of miR-34c-3pin HCC tissues and cell lines were examined by quantitative real-time polymerase chain reaction (qRT-PCR). The correlations of miR-34c-3p expression and clinicopathological characteristics were analyzed. The biological role of MiR-34c-3pin cell proliferation, migration and invasion was examined. In addition, the targets of miR-34c-3p were identified. The results showed that miR-34c-3p expression was significantly down-regulated in HCC tissues and cell lines; low expression level of miR-34c-3p was correlated with vascular invasion and advanced TNM stage. In vitro functional assays showed that overexpression of miR-34c-3pin HepG2 and Huh7 cells significantly reduced cell proliferation, migration and invasion. Furthermore, target analysis and luciferase assay identified myristoylated alanine-rich protein kinase c substrate (MARCKS) as a specific target of miR-34c-3p. Knockdown of MARCKS in HepG2 cells reduced cell migration and invasion, but not cell proliferation. Taken together, our findings implicate the potential application of miR-34c-3p as a tumor suppressor in cancer therapy.     

心电图对流出道室性心律失常起源部位的预测价值

目的 分析已行导管消融术的流出道室性心律失常患者的临床特点及电生理学特点,探讨三种已知心电指标:移行区指数、V2S/V3R指数、R波时限振幅指数对OTVA起源部位预测价值的优劣性,为临床诊疗提供参考依据。 方法 回顾性分析宁夏医科大学总医院2011年1月1日至2017年12月31日已行导管消融术且术中心内电生理证实为OTVA的54例住院患者病例资料,分析其术前12导联体表心电图,测量并计算R波时限指数与振幅指数、V2S/V3R指数、胸前导联移行区指数。通过以上指标判断心电图对于术前预测OTVA起源部位的灵敏度、特异度、阳性预测值、阴性预测值、准确度。 结果 以R波时限指数≥50%且振幅指数≥30%;V2S/V3R指数≤1.5;移行区指数<0为标准鉴别OTVA起源于LVOT时,三种指标的灵敏度、特异度、阳性预测值、阴性预测值和准确度同名指标间的差异均无统计学意义。 结论 三种心电图指标预测OTVA流出道起源的预测价值无显著差异。     

Effect of postoperative early enteral nutrition on clinical outcomes and immune function of cholangiocarcinoma patients with malignant obstructive jaundice

BACKGROUNDMost cholangiocarcinoma patients with malignant obstructive jaundice (MOJ) have varying degrees of malnutrition and immunodeficiency preoperatively. Therefore, perioperative nutritional support has important clinical significance in the treatment of cholangiocarcinoma.AIMTo investigate the effects of postoperative early enteral nutrition (EEN) on immunity function and clinical outcomes of cholangiocarcinoma patients with MOJ.METHODSThis prospective clinical study included 60 cholangiocarcinoma patients with MOJ who underwent surgery. The patients were randomly divided into an experimental group and a control group according to the nutrition support modes. The control group received postoperative total parenteral nutrition (TPN), whereas the experimental group received postoperative EEN and parenteral nutrition (PN; EEN + PN). The clinical outcomes, postoperative immune function, incidences of surgical site infection and bile leakage, intestinal function recovery time, average hospitalization days, and hospitalization expenses of the two groups were assessed on postoperative days (PODs) 1, 3, and 7.RESULTSThe CD3+T, CD4+T, CD8+T, and CD4+T/CD8+T cell count and the immunoglobulin (Ig) G, IgM, and IgA levels in the EEN + PN group were significantly higher than those in the TPN group on PODs 3 and 7 (P < 0.05), whereas no significant differences in the CD3+T, CD4+T, CD8+T, and CD4+T/CD8+T cell counts and IgG, IgM, and IgA levels before operation and on POD 1 were found between the two groups (P > 0.05). The intestinal function recovery time and postoperative hospital stay were shorter (P < 0.001 for both) in the EEN + PN group than in the TPN group. The hospitalization expenses of the EEN + PN group were lower than those of the TPN group (P < 0.001). However, the incidence of abdominal distension was higher than in the EEN + PN group than in the TPN group (P < 0.05). The incidence rates of biliary leakage and surgical site infection were not significantly different between the two groups (P > 0.05).CONCLUSIONA postoperative EEN program could reduce the incidence of postoperative complications and improve the clinical outcomes and immune functions of cholangiocarcinoma patients with MOJ and is thus beneficial to patient recovery.     

首发抑郁症患者肠道菌群与认知情绪调节关系研究

背景　近年来抑郁症和肠道菌群的相关研究大多集中于动物实验,而人体肠道菌群的相关研究相对较少,结合心理特征的研究则更少。目的　了解首发抑郁症患者与健康人群在肠道菌群、认知情绪调节方面的差异,进一步探讨抑郁症、肠道菌群及认知情绪调节之间的关系。方法　选取2017年1-12月就诊于宁夏医科大学总医院心理卫生中心门诊的首发抑郁症患者30例（抑郁症组）,同期选取宁夏“十三五”科技重大项目流调体检健康志愿者31例（对照组）。完成一般情况调查问卷、汉密尔顿抑郁量表、认知情绪调节量表（CERQ）的评定与粪便的收集;采用高通量测序及生物信息学方法分析微生物群落多样性和丰度变化;探讨情绪调节策略、抑郁严重程度与肠道菌群的相关性。结果　抑郁症组和对照组一般情况（年龄、性别、BMI、吸烟、文化程度）比较,差异无统计学意义（P>0.05）。本研究以97%的相似性将所有样本的有效序列聚类为Operational Taxonomic Units（OTUs）,所得稀释曲线趋向平坦,说明测序数据量合理。抑郁症组与对照组肠道菌群多样性指数比较,差异无统计学意义（P>0.05）。与对照组相比,在门水平,抑郁症组厚壁菌门、放线菌门、柔壁菌门丰度降低,拟杆菌门丰度增高（P<0.05）;在属水平,抑郁症组Ruminococcus、Subdoligranulum、Enterobacter、Coprococcus、Bifidobacterium、Lactobacillus菌属减少,而Klebsiella、Flavonifractor、Bacteroides菌属增多（P<0.05）。LEfSe分析显示,抑郁症组肠道菌群中主要以拟杆菌、产碱菌科（Alcaligenaceae）,伯克菌目（Burkholderiales）,Β-变形菌纲、Erysipelotrichaceae、幽门螺杆菌等致病菌为主;对照组以厚壁菌门、双歧杆菌、Subdoligranulum、乳酸杆菌等有益菌为优势菌。抑郁症组自我责难、沉思、灾难化、责难他人分量表得分高于对照组,积极重新评价、理性分析分量表得分低于对照组（P<0.05）。CERQ分量表中自我责难得分与Enterobacter菌属呈正相关,与Odoribacter、Alistipes菌属呈负相关（P<0.05）;沉思分量表得分与Subdoligranulum、Alistipes、Faecalibacterium、Odoribacter菌属呈负相关（P<0.05）;重新关注计划、积极重新评价分量表得分与Weissella菌属呈正相关（P<0.05）;灾难化分量表得分与Dialister菌属呈负相关（P<0.05）。抑郁严重程度与拟杆菌门及Flavonifractor菌属呈正相关（P<0.05）,与Ruminococcus、Subdoligranulum、Coprococcus、Dialister、Odoribacter、Faecalibacterium、Butyricimonas菌属呈负相关（P<0.05）。结论　抑郁症患者与健康对照者在肠道菌群、认知情绪调节策略方面均有较大差异,情绪调节策略自我责难、沉思、灾难化,肠道菌群条件致病菌的增多及丁酸盐产生菌、益生菌的减少与抑郁症密切相关。     

Dehydrocostuslactone protects against oxygen-glucose deprivation/reperfusion-induced injury by inhibiting autophagy and apoptosis in PC12 cells

OBJECTIVE TO investigate the neural protection of dehydrocostus lactone(DHL) against neuronal injury induced by oxygen and glucose deprivation/reperfusion(OGD/R) in differentiated PC12 cells. METHODS We used a cellular model of 2 h of OGD and 24 h of reperfusion to mimic cerebral ischemia-reperfusion injury. Cell viability was used to reflect the degree of OGD/R-induced injury. Cells were treated with DHL during the reperfusion phase. Cell Counting Kit(CCK-8) and LDH assays were performed to determine the optimal dose of DHL and cel viability. Flow cytometry analysis and Monodansylcadaverine(MDC) staining were then conducted to detect apoptosis rate and autophagosome formation after OGD/R in PC12 cells. Immunofluorescence and Western blotting analyses were used to detect the expression of proteins associated with autophagy and apoptosis. RESULTS OGD/R significantly decreased cell viability and increased apoptosis rate. The expression levels of autophagy-related proteins, namely, LC3 and Beclin-1, and apoptosisrelated proteins, namely, Bax and caspase-3 increased, but that of the anti-apoptosis Bcl-2 protein decreased. However,DHL attenuated OGD/R-induced neuronal injury through inhibition of apoptosis and autophagy properties by modulating autophagy-associated proteins(LC3 and Beclin-1) and apoptosis-modulating proteins(caspase-3 and Bcl-2/Bax). CONCLUSION Our data provide an evidence for the neuroprotective effect of DHL against ischemic neuronal injury. Hence, DHL could be a promising candidate for treatment of ischemic stroke.