Plasma vaspin concentrations are decreased in acute coronary syndrome,but unchanged in patients without coronary lesions

Objective

Previous studies suggested that decreased serum vaspin levels were associated with coronary artery disease (CAD). The present study aimed to investigate the association between plasma vaspin levels and different states of CAD.

Design and methods

A total of 162 patients with coronary angiography (CAG) proved that CAD was enrolled. Additional 103 patients complained with “chest discomfort” with negative CAG, and 60 normal subjects were enrolled in this study. The levels of plasma vaspin, adiponectin, clinical parameters, lipid profile and C reactive protein (CRP) were measured.

Results

The levels of plasma vaspin were significantly lower in the CAD group (0.47 ± 0.63 μg/L) than those in the healthy group and CAG (−) group (all p < 0.001). In CAD group, the pos hoc analysis showed that serum vaspin concentration in acute myocardial infarction group (0.21 ± 0.19 μg/L) was significantly lower than that in the unstable angina pectoris group (0.40 ± 0.37 μg/L) (p = 0.012), and serum vaspin concentration in unstable angina pectoris was significantly lower than that in stable angina pectoris group (0.92 ± 0.94 μg/L) (p = 0.013). The plasma vaspin concentration was also negatively correlated with the severity of CAD (1-vessel: 0.86 ± 0.90 μg/L; 2-vessel: 0.36 ± 0.39 μg/L; 3-vessel: 0.21 ± 0.16 μg/L). The plasma vaspin concentration in CAG (−) group with “chest discomfort” (1.93 ± 2.57 μg/L) was similar to the healthy control group (2.18 ± 3.49 μg/L).

Conclusions

The plasma vaspin concentration correlated to the severity of CAD. Furthermore, plasma vaspin has a value of avoiding patients without CAD from unnecessary CAG.     

肠内营养在重症急性胰腺炎综合治疗中的作用

目的 探讨肠内营养（EN）在重症急性胰腺炎（SAP）综合治疗措施中的作用。方法 回顾分析近两年我科收治的52例SAP患者的临床资料，按是否接受EN分成EN组（27例）和常规组（25例），比较两组患者主要治疗经过及临床转归，以及APACHEⅡ评分和血清白蛋白和前白蛋白的变化。结果 52例患者全部治愈，除6例（11．5％）并发假性囊肿外，无其他并发症。EN组患者于入院后5d左右开始实施EN，均能较好耐受，其治疗前后APACHEⅡ评分变化显著大于常规治疗组（P〈0．05），且血清白蛋白、前白蛋白水平均高于常规治疗组（P〈0．05）。结论 EN具有安全、可行、易操作等特点。合理应用有助于改善SAP机体的营养状况。     

重症急性胰腺炎入院24 h内死亡因素剖析

目的探讨重症急性胰腺炎死亡因素.方法应用SPSS10.0软件对52例重症急性胰腺炎病人入院24h内临床资料进行Logistic回归分析,筛选重症急性胰腺炎死亡的危险因素,并建立Logistic回归方程式.结果在调查的27个因素中血pH值、APACHEⅡ评分、早期休克、合并多脏器功能衰竭与死亡关;单因素Logistic回归分析发现休克、胸腔积液、血pH值、APACHEⅡ评分以及并发症的发生与死亡有关,而多因素分析发现只有血pH值与重症急性胰腺炎的死亡有关.结论该回归方程在病程早期对预测重症急性胰腺炎的预后及临床治疗有一定帮助;重症急性胰腺炎早期治疗中应强调维护全身脏器功能,积极纠正水电解质和酸碱平衡的紊乱,对降低死亡率具有重要的作用.     

Disruption of the NMDA receptor-PSD-95 interaction in hippocampal neurons with no obvious physiological short-term effect

PSD-95 binds to and co-localizes with NMDA receptors at postsynaptic sites. Their co-expression in COS7 cells induces the formation of aggregates containing both proteins. These findings have lead to the hypothesis that PSD-95 helps to cluster NMDA receptors at postsynaptic sites. In addition, PSD-95 binds various regulatory proteins including Src, Pyk2, SynGAP, and nNOS and may recruit signaling proteins to NMDA receptors. We tested whether synaptic transmission or plasticity was affected by acute dissociation of the PSD-95-NMDA receptor interaction with various peptides that bound to the first two PDZ domains of PSD-95 and its homologs and with antibodies directed against the very C-terminus of the NR2A and NR2B subunits of the NMDA receptor. Membrane-impermeable peptides injected via whole cell patch electrodes distributed within minutes throughout dendritic branches into spines in acute hippocampal slices and membrane-permeable peptides containing 11 arginine residues effectively accumulated in neurites in slices and primary hippocampal cultures. Neither peptides nor antibodies showed any effect on basal synaptic transmission or induction of long-term potentiation (LTP) in hippocampal slices. Pharmacologically isolated NMDA receptor activity was also not affected. However, the membrane-permeable peptide disrupted the NMDA receptor-PSD-95 interaction in slices as tested by immunoprecipitation and subsequent immunoblotting. These findings suggest that acute dissociation of PSD-95 and its homologs from the NMDA receptor and likely from other protein complexes does not result in any easily detectable physiological effects in hippocampal slices. However, we cannot exclude a role of PSD-95 in early events that lead to clustering of NMDA receptors or of other proteins including stargazin and AMPA receptors at postsynaptic sites nor do these experiments address the possibility of long-term changes in the slices. In fact, incubation of primary hippocampal cultures with the membrane-permeable peptide lead to a moderate decrease in the number of dendritic clusters of PSD-95 and NMDA receptors and their colocalization by 20-30%, suggesting some role of PSD-95 and its homologs in NMDA receptor clustering.     

肺炎衣原体与急性冠脉综合征关系的临床研究

目的观察急性冠脉综合征患者肺炎衣原体感染情况,研究冠心病炎症与CPn感染的关系。方法99例疑诊"冠心病"收住兰州大学第一医院心内科患者,入院24h内清晨空腹静脉血标本留置,综合相关检查、治疗及病情转归情况确诊分为:ACS组48例(其中UAP组31例,AMI组17例),SAP组17例,非冠心病对照组13例;另门诊健康检查者30例经各相关检查后确定的10例健康者为健康对照组,用微量免疫荧光法测定血清中CPnlgG和lgM抗体滴度。结果各组实验对象CPnlgM抗体均为阴性。各组实验对象CPnlgG滴度值经Spearman等级相关分析(秩相关分析),相关系数无统计学意义(rs=0.175,P=0.102),说明各组lgG滴度与分组无关,分组与CPn慢性感染无关。结论本研究48例ACS,17例SAP均无CPn急性感染。各组CPn慢性感染率均高,本研究为断面研究、非动态研究,所选病人均是已发生ACS者,至于CPn与ACS启动在研究中未涉及。     

国产生长抑素治疗急性重症胰腺炎35例的临床疗效观察

目的:观察国产生长抑素治疗重症急性胰腺炎的临床疗效及其对血浆内毒素和肿瘤坏死因子(TNF-α)水平的影响。方法:35例重症急性胰腺炎患者使用生长抑素治疗7～10d后,观察患者的症状、体征变化,血尿淀粉酶、肝功能恢复以及血浆内毒素和TNF-α水平等。结果:经过7～10d生长抑素治疗后,患者的症状、体征、血尿淀粉酶、肝功能以及血浆内毒素和TNF-α水平均得到不同程度的恢复,总有效率为84%。结论:国产生长抑素可以有效地控制重症急性胰腺炎的临床症状,迅速降低血浆内毒素和TNF-α水平,降低患者的死亡率和不良反应发生率。     

安胰颗粒对SAP大鼠胰腺组织NF-κB、iNOS、COX-2表达的影响

目的探究安胰颗粒对左旋精氨酸诱导的SAP大鼠胰腺组织NF-κB、iNOS、COX-2表达的影响。方法 120只SD大鼠随机分为正常组、模型组、IL-10干预组、安胰颗粒组(8 g/kg)。给药组预给药3 d,左旋精氨酸诱导SAP模型。HE染色观察胰腺组织病理变化,RT-PCR测定胰腺NF-κB mRNA表达,免疫组化检测iNOS、COX-2表达。结果左旋精氨酸诱导SAP模型3、6、12 h后,模型组胰腺组织NF-κB mRNA、iNOS及COX-2表达均升高(P<0.01);经IL-10及安胰颗粒干预后,NF-κB mRNA、iNOS及COX-2表达降低(P<0.05);安胰颗粒组与IL-10干预组比较,差异无统计学意义。结论安胰颗粒能有效抑制NF-κB mRNA、iNOS及COX-2的表达,是其治疗重症急性胰腺炎的机制之一。     

CHD患者血浆ET-1、GMP-140和血清cTnI检测的临床意义

目的：探讨冠心病（CHD）患者血浆ET-1、GMP-140和血清心肌肌钙蛋白Ⅰ（cTnI）水平的变化及意义。方法：应用放射免疫分析和酶免法对96例CHD患者进行了血浆ET-1、GMP-140和血清cTnI水平的测定,其中稳定型心绞痛（SAP）36例,不稳定型心绞痛（UAP）41例,急性心肌梗死（AMI）19例。并与35例正常健康人作比较。结果：CHD患者血浆ET-1、GMP-140和血清cTnI水平均非常显著的高于正常人组（P〈0.01）,急性AMI组和UAP组又高于SAP组（P〈0.05）,且血清cTnI水平与血浆ET-1、GMP-140水平呈正相关。结论：检测CHD患者血浆ET-1、GMP-140和血清cTnI水平的变化对CHD的发生和发展以及疗效和预后观察均具有重要的临床意义。     

生长抑素联合前列地尔对重症急性胰腺炎患者的疗效及对TNF-αIL-6的影响

目的:研究生长抑素联合前列地尔对急诊重症急性胰腺炎( SAP )患者的疗效及对肿瘤坏死因子-α(TNF-α)、白细胞介素-6(IL-6)的影响. 方法:选择2012年6月至2015年5月接受治疗的SAP 患者96例实施研究,根据数字随机法分成观察组以及对照组两组,每组各有48例患者. 两组均予以常规禁食、胃肠减压以及抗生素等对症支持性治疗. 对照组增用生长抑素,观察组在对照组基础上增用前列地尔,治疗2 周后比较两组不同治疗方式的疗效,两组症状体征相关指标,内毒素、TNF-α及IL-6水平,以及药物不良反应. 结果:观察组经过治疗后的总有效率为95.83%,较对照组的81.25%显著更高( P<0.05). 观察组的腹痛缓解所需时间、肠功能恢复所需时间、血淀粉酶恢复所需时间以及ICU住院时间均分别少于对照组( P<0.05). 两组治疗前的内毒素、TNF-α及IL-6水平无统计学差异. 观察组治疗后的内毒素、TNF-α及IL-6水平均分别显著低于对照组( P<0.05). 两组不良反应比较,差异无统计学意义. 结论:利用前列地尔以及生长抑素对SAP 患者实施联合治疗,疗效较好,能够加速患者症状恢复,还可减少炎性介质的释放,安全性较高,值得退广应用.     

急性重症胰腺炎患者肠黏膜屏障功能的改变

目的:探讨急性重症胰腺炎(SAP)的肠道黏膜屏障功能改变的机制,以期提高对SAP的治疗策略。方法:36例SAP患者入院当天采血检测二胺氧化酶(DAO)、内毒素(endotoxin,ET)、肿瘤坏死因子(TNF-α)、一氧化氮(NO)的浓度。并用带特殊电化学检测器的高压液相色谱法(HPLC)检测尿中乳果糖与甘露醇排泄率比值。以30名健康志愿者作为正常对照组。结果:同正常对照组相比较,SAP患者尿中乳果糖与甘露醇排泄率比值明显升高(P<0.01);血中ET、NO、TNFα、DAO的水平显著增加(P<0.01)。结论:急性重症胰腺炎患者的肠黏膜屏障受损,肠黏膜通透性增高。ET、NO、TNFα单独或协同参与肠黏膜屏障的损害。DAO升高提示肠道黏膜的完整性受到破坏。