Overexpression of hepatic plasminogen activator inhibitor type 1 mRNA in rabbits with fatty liver

INTRODUCTIONPlasminogen activator inhibitor type 1 ( PAI-I ), an approximately Mr 50000 glycoprotein, is the major physiological inhibitor of plasminogen activators. It is not only the priming factor for atherosclerosis and coronary thrombosis[1-3] , but also participates in the genesis of chronic hepatitis and liver fibrosis[4-11] . However, there has been no available report yet about the research of hepatic PAl-1 gene expression in hyperlipidemia and fatty liver. The present study aimed to explore the change of hepatic PAl-1 mRNA and its plasma activity by means of animal model.

INVESTIGATION OF THROMBOMODULIN AND PLASMINOGEN ACTIVATOR INHIBITOR TYPE-I IN PREGNANCY INDUCED HYPERTENSION AND ITS CLINICAL SIGNIFICANCE

Objective. To measure the circulating levels of thrombomodulin (TM) and plasminogen activator inhibitor type- I (PAI- I) in women with pregnancy induced hypertension (PIH). Methods. Blood samples were drawn from 97 pregnant women in their third trimester, grouped as 25 mild PIH,26 moderate PIH,22 severe PIH and 24 normotensive healthy pregnant women for determining levels of TM by ELISA,PAI- I by colorimetric assay methods, and creatinine (Cr) in serum by biochemical method. Results. Circulating levels of TM, PAI- I and TM/Cr ratio increased with increasing severity of PIH. There were no significant differences between mild and normotensive pregnant women. The parameters were significantly changed in the moderate and severe PIH groups. Conclusion. TM and PAI- I may serve as meaningful clinical markers for the assessment of the endothelial damage in PIH, which is very important in evaluating and following the development of PIH.

Roles of tissue plasminogen activator and its inhibitor in proliferative diabetic retinopathy

AIMTo investigate the role of tissue plasminogen activator (t-PA) and plasminogen activator inhibitor (PAI) in proliferative diabetic retinopathy (PDR) and to discuss the correlations among t-PA, PAI and vascular endothelial growth factor (VEGF) expressions.

THE INCREASE IN PLASMINOGEN ACTIVATOR INHIBITOR TYPE-1 EXPRESSION BY STIMULATION OF ACTIVATORS FOR PEROXISOME PROLIFERATOR-ACTIVATED RECEPTORS IN HUMAN ENDOTHELIAL CELLS

Objective.To investigate the effect of peroxis ome proliferator-activated recept ors(PPARs )activators on plasminogen activator inhibitor ty pe-1(PAI-1)expression in human umbilical vein e ndothelial cells and the possi-ble mechanism.Methods.Human umbilical vein endothelial ce lls(HUVECs )were obtained from normal fetus,and cul-tured conventionally.Then the HUVECs were exposed to test agents(linolenic acid,linoleic acid,oleic acid,stearic acid and prostaglandin J 2 respectively)in varying concentrations with fresh media.RT -PCR and ELISA were applied to determine the expression of PPARs and PAI-1in HUVECs.Results.PPARα,PPARδand PPARγmRNA were detected by using RT-PCR in HUVECs.Treatment of HUVECs with PPARαand PPARγactivators---linolenic acid,linoleic acid,oleic acid and prostaglandin J 2 respectively,but not with stearic a cid could augment PAI-I mRNA expression and protein secretion in a concentration-dependent manner.However,the mRNA expressions of 3subclasses of PPAR with their activators in HUVECs were not changed compared w ith controls.Conclusion.HUVECs express PPARs.PPARs activators may increase PAI-1expression in ECs,but the underlying mechanism remains uncle ar.Although PPARs expression was not enhanced after stimulated by their activators in ECs,the role of functionally active PPARs in regulating PA I-1expression in ECs needs to be further investigated by using transient gen e transfection assay.

Genetic and Metabolic Determinants of Plasminogen Activator Inhibitor 1 (PAI-1) in Tunisian Type 2 Diabetes Patients

Background: PAI-1 (plasminogen activator inhibitor-1) is a powerful regulator of fibrinolysis and plasma level is high in type 2 diabetes and cardio-vascular disease, which is determined by genetic polymorphisms in PAI-1 gene and environmental factors. The aim of the study was to examine the determinants of plasma PAI-1 Ag level among type 2 diabetes patients. Methods: 491 Tunisian type 2 diabetes patients had clinical evaluation (weight, high, BMI, Waist Circumference), laboratory investigations including FBG Hb1Ac, cholesterol, triglyceride;HDL-cholesterol was done;plasma PAI-1 antigen level was done with ELISA;&minus;675 4G/5G and &minus;844 G/A polymorphisms of PAI-1 gene was done by PCR-ASA and PCR-RFLP respectively. Results: The mean age for our patients was 58.3 ± 10.5 years;sex-ratio = 0.92;mean PAI-1 level was 34.6 ± 21.3 ng/ml. We didn’t find correlation between PAI-1 level and BMI, but we have found significant correlation between PAI-1 and waist circumference (p = 0.032), most enhanced in men (P = 0.002), T2D patients who have FBG > 11 mmol/l had PAI-1 Ag level higher than those who have FBG P = 0.034), but no difference found between T2D with high Hb1Ac > 8% and those with Hb1Ac < 8%, significant correlation was seen between PAI-1 level and LDL-cholesterol (P = 0.05), high correlation between PAI-1 Ag level and &minus;675 4G/5G polymorphism genotype was seen, 4G/4G carriers had the highest PAI-1 level, 4G/5G had intermediary level and 5G/5G had the lowest level (P &minus;844G/A polymorphism genotypes. Using multiple variable linear regression analysis, the independent factor associated with plasma PAI-1 level was &minus;675 4G/5G polymorphism (regression coefficient β = 4.6, P Conclusion: the present study identifies &minus;675 4G/5G not &minus;844 G/A polymorphism of PAI gene as the principal determinant of plasma PAI-1 level in Tunisian T2D patients, the android fat distribution, dyslipidemia and hyperglycemia play a modest role in this variation.

Expression and prognostic value of plasminogen activator inhibitor type 1 in node-negative breast cancer

Objective： To investigate the expressions of plasminogen activator inhibitor type 1 （PAl-1）, C-erbB-2, VEGF and Ki-67 by immunohistostaining and then to evaluate the prognostic value of PAl-1 in node-negative breast cancer. Methods： The study included a retrospective series of 62 female patients with axillary lymph node-negative breast cancer. Expressions of PAl-1, C-erbB-2, VEGF and Ki-67 were determined by immunohistostaining on formalin-fixed paraffin-embedded tissue sections from these patients after a median follow-up of 69 months （range 22-117 months）. Correlations with well known clinicopathologic factors were assessed and multivariate survival analyses were performed. Results： High PAl-1 level was positively associated with high histologic grade of the tumors. Disease-free survival （DFS） was significantly shorter for the patients with moderate to intensive expression of PAl-1 than for those with negative （χ^2 = 25.46, P 〈 0.001; χ^2 = 23.07, P 〈 0.001） to mild expression （χ^2 = 19.75, P 〈 0.001; χ^2 = 17.40, P 〈 0.001）. Although on univariate analysis of the prognostic factors, tumor size, location of primary tumor and age as well as expressions of PAl-1, VEGF and Ki-67 were all significantly prognostic factors for DFS （P 〈 0.05）, PAl-1 was the only independent prognostic factor on multivariate analysis （P 〈 0.0001; hazard ratio [HR], 4.041; 95% confidence interval [CI], 1.928-8.468）. Conclusion： These results of the current study indicate that intermediate or high expression of PAl-1 represents a strong and independent unfavorable prognostic factor for the development of recurrence or metastases in axillary node-negative breast cancer.

Association of plasminogen activator inhibitor-1 4G/5G promoter polymorphism with recurrent cerebral infarction in China’s North Jiangsu Province

BACKGROUND： Many international studies have shown that plasminogen activator inhibitor-1 （PAl-l） 4G/5G promoter polymorphism does not increase the risk for cerebral infarction. OBJECTIVE： Using PCR methodology and agarose electrophoresis to detect PAI-1 4G/5G promoter polymorphism in patients with recurrent cerebral infarction in the North Jiangsu Province of China, and to compare results with healthy subjects and patients with first-occurrence cerebral infarction in the same region. DESIGN, TIME AND SETTING： Non-randomized, concurrent, control trial. A total of 122 cerebral infarction patients were admitted to Xuzhou Medical College Hospital＇s Department of Neurology and Xuzhou Central Hospital＇s Department of Neurology between July 2003 and August 2006. PARTICIPANTS： The patients consisted of 63 males and 59 females, aged （62 ± 10） years. They were divided into first-occurrence （n = 58） and recurrence （n = 64） groups. In addition, 50 healthy subjects that underwent physical examination in the outpatient department, including 26 males and 24 females, aged （60 ±12） years, were selected as controls. METHODS AND MAIN OUTCOME MEASURES： PAl-1 4G/5G promoter polymorphism was detected and analyzed using PCR methodology and agarose electrophoresis. RESULTS： Significant differences were determined in terms of genotypic frequency and allele frequency of PAI-1 4G/5G promoter polymorphism, in patients with first-occurrence or recurrent cerebral infarction, when compared with healthy subjects （P 〈 0.05）. There was, however, no significant difference between the first-occurrence and recurrence groups （P 〉 0.05）. CONCLUSION： PAl- 1 4G/5G promoter polymorphism is genetic risk factor for cerebral infarction in China. However, it may be associated with recurrence of cerebral infarction in patients from the North Jiangsu Province of China.

THE EFFECT OF RADIX SALVIAE MILTIORRHIZAE ON THE INHIBITORY ACTIVITY OF VASCULAR SMOOTH MUSCLE CELLS TO THE PLASMINOGEN ACTIVATORS SECRETED BY ENDOTHELIAL CELLS

Cultured porcine endothelial cells (EC) produce and secrete plasminogenactivators (PA). If the serum free media incubated by vascular smooth muscle cells(SMC-CM) were mixed with the same media incubated by endothelial cells (EC-CM),the PA activities of the latter decreased significantly. Cocultivation of EC with SMC alsoresulted in a significant decrease (70.7%) of PA activities produced by EC. Sodiumdodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) analysis of SMC-CMfollowed by reverse fibrin autography demonstrated that the PA inhibitor had a molecularweight of 49000-62000. In this study we also investigated the effect of a Chinese herbalmedicine-Radix Salviae Miltiorrhizae (RSM) on the inhibitory activity of SMC. The re-sults showed that RSM significantly decreased the inhibitory activity of SMC against thePA secreted by EC.

Comment on roles of tissue plasminogen activator and its inhibitor in proliferative diabetic retinopathy

Dear Sir,We congratulate Wu et al for their study entitled＂Roles of tissue plasminogen activator and its inhibitor in proliferative diabetic retinopathy＂.The authors investigated the effects of tissue plasminogen activator（t-PA）and plasminogen activator inhibitor（PAI）in the pathogenesis of proliferative diabetic retinopathy（PDR）.The authors reported that t-PA and PAI are involved in the pathogenesis of PDR.

EFFECTS OF TGF-β_1 ON THE EXPRESSION OF PLASMINOGEN ACTIVATOR INHIBITOR TYPE 1 IN CULTURED HUMAN RENAL INTERSTITIAL FIBROBLASTS

Objective To investigate the effects of transforming growth factor-β1 (TGF-β1 ) on the expression of plasminogen activator inhibitor type 1 (PAI-1 ) mRNA in renal interstitial fibrosis in vitro. Methods Human renal interstitial fibroblasts were isolated and cultured in vitro. The cells wers stimulated by TGF-β1 with different concentration (0 to 10ng/ml ) at different time (0 to 48h). The expression of PAI-1 mRNA was assayed by RT-PCR. Results TGF-β1, had dose-dependent and time-dependent effects on the expression of PAI-1 mRNA in renal interstitial fibroblasts. Conclusion TGF-β1 may partic- ipate in renal fibrosis with inducing the expression of PAI-1 mRNA in renal fibroblasts and affecting the synthesis and degradation of extracellular matrix (ECM).

Study on Effect of Different Dosages of Ligustrazine on Level of Plasminogen Activator Inhibitor-1 Activity in Type 2 Diabetes Mellitus Patients

Objective: To observe the effect of different dosages of ligustrazine (LG) on the level of plasminogen activator inhibitor-1 (PAI-1) activity in patients with type 2 diabetes mellitus. Methods: Ninety cases of type 2 diabetes mellitus inpatients were selected, and randomly divided into LG small dosage group (SDG), LG large dosage group (LDG) and control group. The 120 mg LG, 400 mg LG and normal saline 250 ml were given through intravenous dripping respectively, once daily, 20 days as one treatment course. Before and after treatment, all the patients had their fasting blood taken for PAI-1 and tissue plasminogen activator (t-PA) assessment test to perform the comparative study. Results:Seventy-three out of the 90 patients completed the observation course, the PAI-1 activity of three groups after treatment all lowered compared with that before treatment, and the difference between groups was also significant (all P<0. 01). After treatment the PAI-1 level of SDG and LDG of LG were all markedly lowered (all P<0. 01), the LDG's lowering was more evident than that of SDG, and comparison between these two groups of patients showed significant difference (P<0. 01). Although in the control group there was some difference between before and after treatment, it was not so significant like the above-mentioned two groups (P = 0. 0140). No adverse reaction occurred in the 3 groups during the observation period. Conclusion:LG could safely and effectively lower type 2 diabetes mellitus patient's plasma PAI-1 activity level, and LDG of LG proved to be particularly effective.

新凝血标志物在新生儿弥漫性血管内凝血诊断及预后评估中的价值

目的探讨新凝血标志物血栓调节蛋白(TM)、凝血酶-抗凝血酶复合物(TAT)、纤溶酶-α2抗纤溶酶复合物(PIC)和组织型纤溶酶原激活剂-纤溶酶原激活剂抑制剂-1复合物(t-PAIC)在新生儿弥漫性血管内凝血(DIC)诊断及预后评估中的价值。方法纳入87例DIC患儿(观察组),根据其出院时的转归情况分为存活组(66例)和死亡组(21例),另外以同期出生的50例健康新生儿作为对照组。收集新生儿的临床资料,采用Logistic回归分析新生儿发生DIC的危险因素。分析不同组别TM、TAT、PIC和t-PAIC水平差异。采用受试者工作特征(ROC)曲线分析TM、TAT、PIC和t-PAIC在新生儿DIC诊断和预后评估中的价值。结果观察组低Apgar评分、出生窒息、IVH、脓毒症和PIH的发生率高于对照组(P<0.05)。多因素Logistic回归分析显示,低Apgar评分、出生窒息、脓毒症和PIH是新生儿发生DIC的独立危险因素。观察组TM、TAT、PIC和t-PAIC水平均高于对照组(P<0.05)。ROC曲线显示,TM、TAT、PIC和t-PAIC联合诊断新生儿DIC的价值优于单独诊断。死亡组TM、TAT水平高于存活组(P<0.05),2组PIC、t-PAIC差异无统计学意义;多因素Logistic回归分析显示,TAT水平升高是影响新生儿DIC预后的独立危险因素。ROC曲线显示,当TAT为21.72μg/L时,其预测新生儿DIC预后的曲线下面积为0.772(95%CI:0.666~0.878),敏感度和特异度分别为76.2%和71.2%。结论TM、TAT、PIC和t-PAIC联合应用对新生儿DIC诊断和预后评估具有重要的临床价值。

血清和胸腔积液PAI-1、TGF-β、VEGF、IL-6在结核性胸膜炎胸膜纤维化患者中的变化及临床意义

目的探讨血清和胸腔积液纤溶酶原激活剂抑制物-1(PAI-1)、转化生长因子-β(TGF-β)、血管内皮生长因子(VEGF)、白细胞介素-6(IL-6)在结核性胸膜炎胸膜纤维化患者中的变化及临床意义。方法选取2020年7月至2023年7月该院收治的103例结核性胸膜炎胸膜纤维化患者作为研究对象,治疗2周后,根据糖皮质激素治疗疗效将其分为显效组、非显效组。比较两组治疗前及治疗1、2周后血清和胸腔积液PAI-1、TGF-β、VEGF、IL-6水平。采用Spearman相关分析血清和胸腔积液PAI-1、TGF-β、VEGF、IL-6水平与疗效的相关性。治疗2周后血清PAI-1、TGF-β、VEGF、IL-6水平与胸腔积液中该指标水平之间进行Pearson相关分析。绘制受试者工作特征曲线分析治疗1、2周后血清和胸腔积液PAI-1、TGF-β、VEGF、IL-6水平对结核性胸膜炎胸膜纤维化患者疗效的预测价值。结果两组治疗1、2周后血清和胸腔积液PAI-1、TGF-β、VEGF、IL-6水平低于治疗前,显效组治疗1、2周后血清和胸腔积液PAI-1、TGF-β、VEGF、IL-6水平低于非显效组,差异有统计学意义(P<0.05)。治疗1、2周后血清和胸腔积液PAI-1、TGF-β、VEGF、IL-6水平与疗效呈负相关(P<0.05)。治疗2周后血清PAI-1、TGF-β、VEGF、IL-6水平和胸腔积液PAI-1、TGF-β、VEGF、IL-6水平呈正相关(r=0.761、0.783、0.812、0.741,均P<0.05)。治疗1、2周后血清和胸腔积液各指标联合检测的曲线下面积(AUC)大于其单独指标的AUC(P<0.05)。结论结核性胸膜炎胸膜纤维化患者血清和胸腔积液PAI-1、TGF-β、VEGF、IL-6水平与疗效有关,血清及胸腔积液PAI-1、TGF-β、VEGF、IL-6联合检测的预测价值较好,能够为临床干预提供参考依据。

超声衰减参数联合血清PAI-1和ALT水平评估代谢相关脂肪性肝病患者肝脂肪变性程度的价值分析

目的分析超声衰减参数(UAP)联合血清纤溶酶原激活物抑制物1(PAI-1)和丙氨酸氨基转移酶(ALT)水平评估代谢相关性脂肪性肝病(MAFLD)患者肝脂肪变性程度的效能。方法2019年3月~2022年12月我院诊治的112例MAFLD患者均接受肝穿刺活检,所有受试者接受iLivTouch瞬时弹性成像检测UAP,采用ELISA法检测血清PAI-1水平,应用受试者工作特征(ROC)曲线分析UAP联合血清PAI-1和ALT水平评估MAFLD患者肝脂肪变性程度的效能。结果在112例MAFLD患者中,经肝组织病理学检查发现肝脂肪变1级(轻度)45例,2级(中度)42例和3级(重度)25例;重度肝脂肪变患者BMI、血清TC、TG和LDL-C水平分别为(32.6±2.4)kg/m^(2)、(6.6±0.9)mmol/L、(4.6±1.4)mmol/L和(4.0±0.9)mmol/L,显著高于中度患者【分别为(27.6±1.9)kg/m^(2)、(5.8±0.8)mmol/L、(3.5±0.9)mmol/L和(3.5±0.7)mmol/L,P<0.05】或轻度患者【分别为(24.1±0.9)kg/m^(2)、(5.1±0.7)mmol/L、(2.2±0.7)mmol/L和(3.0±0.5)mmol/L,P<0.05】,而血清HDL-C水平为(1.2±0.2)mmol/L,显著低于中度【(1.4±0.2)mmol/L,P<0.05】或轻度患者【(1.4±0.2)mmol/L,P<0.05】;重度组UAP、血清PAI-1和ALT水平分别为(312.7±32.6)dB/m、(36.5±4.2)mg/mL和(72.1±7.4)U/L,显著高于中度组【分别为(284.2±30.1)dB/m、(28.1±3.4)mg/mL和(36.3±4.1)U/L,P<0.05】或轻度组【分别为(257.4±26.4)dB/m、(20.4±2.4)mg/mL和(23.7±2.5)U/L,P<0.05】;ROC曲线分析显示,UAP联合血清PAI-1和ALT水平评估重度肝脂肪变性的曲线下面积(AUC)、特异度和敏感度分别为0.914(95%CI:0.883~0.990)、89.6%和93.3%,其特异度显著优于单一指标预测(P<0.05)。结论应用UAP联合血清PAI-1和ALT水平预测MAFLD患者严重肝脂肪变性有良好的评估价值,可为临床诊治提供参考依据。

PAI-1、Hcy水平与妊娠合并心脏病患者妊娠结局的相关性分析

目的探讨纤溶酶原激活物抑制物-1(PAI-1)、同型半胱氨酸(Hcy)水平与妊娠合并心脏病患者妊娠结局的相关性。方法选取2020年1月至2023年1月我院收治的80例合并心脏病的孕妇作为研究组,另选取同期产检健康孕妇80例作为对照组,比较研究组与对照组PAI-1、Hcy水平。将研究组患者根据妊娠结局分为妊娠不良组22例和妊娠良好组58例,比较两组临床资料、三酰甘油(TG)、总胆固醇(TC)、PAI-1、Hcy水平;相关性采用Spearman秩相关分析检验;多因素分析采取二元Logistics回归分析;绘制ROC曲线,分析血清PAI-1、Hcy水平预测不良妊娠结局的价值。结果研究组PAI-1、Hcy水平显著高于对照组(P<0.05);妊娠不良组和妊娠良好组年龄、产次、孕周、分娩孕周、心脏病类型、心功能分级、TC、TG比较差异无统计学意义(P>0.05),妊娠不良组PAI-1、Hcy水平显著高于妊娠良好组(P<0.05);妊娠合并心脏病患者血清PAI-1、Hcy水平与不良妊娠结局呈正相关(P<0.05);多因素Logistic回归分析显示,PAI-1及Hcy为妊娠合并心脏病患者不良妊娠结局的显著影响因素;经ROC分析发现PAI-1、Hcy水平可用于妊娠合并心脏病患者不良妊娠结局的预测,曲线下面积为0.810、0.817,联合预测曲线下面积为0.918。结论妊娠合并心脏病患者血清PAI-1、Hcy水平显著增加孕妇不良妊娠结局发生率,上述指标与不良妊娠结局显著相关,其水平是不良妊娠结局的影响因素,并可用于不良妊娠结局预测,联合预测价值更高。

TAT、TM、PIC、t-PAIC与重型血液毒毒蛇咬伤中毒患者DIC的相关性及预测价值

目的评估凝血酶抗凝酶复合物(TAT)、血栓调节蛋白(TM)、纤溶酶-抗纤溶酶复合物(PIC)和组织型纤溶酶原激活抑制复合物(t-PAIC)与重型血液毒毒蛇咬伤中毒后弥散性血管内凝血(DIC)的临床相关性及预测价值。方法连续纳入2019年4月至2023年4月收治的重型血液毒毒蛇咬伤中毒患者作为研究对象,共132例。依据住院期间是否出现DIC分为观察组(发生DIC,n=37)及对照组(未发生DIC,n=95)。检测2组血浆TAT、TM、PIC、t-PAIC浓度。应用二元、无分类协变量的非条件Logistic回归分析TAT、TM、PIC、t-PAIC浓度与重型血液毒毒蛇咬伤中毒后DIC的临床相关性,建立受试者工作特征(ROC)曲线分析TAT、TM、PIC、t-PAIC对重型血液毒毒蛇咬伤中毒后DIC的预测能力。结果观察组TAT、TM、PIC、t-PAIC显著高于对照组(P<0.05)。二元、无分类协变量的非条件Logistic回归分析显示,TAT[OR=1.517(95%CI:1.155,1.879)]、TM[OR=1.647(95%CI:1.108,2.186)]、PIC[OR=3.989(95%CI:2.986,4.992)]、t-PAIC[OR=1.111(95%CI:0.854,1.368)]是重型血液毒毒蛇咬伤中毒患者发生DIC的危险因素(P<0.05)。ROC曲线分析显示,TAT、TM、PIC、t-PAIC是预测重型血液毒毒蛇咬伤中毒患者DIC的有效指标(P<0.05),其曲线下面积(AUC)分别为0.865(95%CI:0.790,0.939)、0.771(95%CI:0.673,0.870)、0.847(95%CI:0.804,0.889)、0.680(95%CI:0.573,0.787),联合预测效能更优异(P<0.001),AUC为0.904(95%CI:0.875,0.933)。结论TAT、TM、PIC和t-PAIC检测对判断重型血液毒毒蛇咬伤中毒患者是否发生DIC有重要参考价值,可以较好地评估患者凝血功能状态,4个指标联合预测DIC的效能更优。

动态心电图及sST2、PAI-1在川崎病伴发冠脉损伤诊断中的研究

目的探讨动态心电图及可溶性人基质裂解素-2(sST2)、纤溶酶原激活物抑制物-1(PAI-1)在川崎病伴发冠脉损伤诊断中的意义。方法研究对象选取2018年1月至2024年1月郑州大学第一附属医院收治的102例川崎病患儿,根据患儿是否伴发冠脉损伤分为两组,其中损伤组40例,未损伤组62例。比较两组患儿的临床病例资料[性别、年龄、身体质量指数(BMI)、发热持续时间、白细胞计数、25-羟维生素D3(25-(OH)D_(3))、血红蛋白、血小板计数、肌酸激酶同工酶(CK-MB)、氨基末端脑利钠肽前体(NT-proBNP)、C反应蛋白(CRP)、sST2、PAI-1]及动态心电图异常率,通过多因素分析川崎病伴发冠脉损伤的影响因素,绘制ROC曲线评价不同指标对川崎病患儿伴发冠脉损伤的诊断价值。结果损伤组患儿的发热持续时间、血小板计数、CRP、CK-MB、NT-proBNP、sST2、PAI-1水平高于未损伤组,25-(OH)D_(3)水平低于未损伤组,差异具有统计学意义(P<0.05)。损伤组患儿的动态心电图异常率为60.00%,未损伤组患儿的动态心电图异常率为16.13%,损伤组高于未损伤组,差异具有统计学意义(P<0.05)。二元Logistic分析结果显示,发热持续时间、25-(OH)D_(3)、血小板计数、CRP、CK-MB、NT-proBNP、sST2、PAI-1、动态心电图异常是川崎病患儿伴发冠脉损伤的影响因素(P<0.05)。以sST2、PAI-1、动态心电图异常及3项指标联合应用作为变量绘制诊断川崎病伴发冠脉损伤的ROC曲线,sST2的AUC为0.789,PAI-1的AUC为0.729,动态心电图异常的AUC为0.719,联合检测的AUC为0.978。结论动态心电图及sST2、PAI-1水平诊断川崎病是否伴发CAL具有较高的诊断价值。

血清水平预测老年髋关节术后下肢深静脉血栓的价值研究

目的:探索血清D-二聚体(D-dimer,D-D)、纤维蛋白原(fibrinogen,FIB)、血小板(platelet,PLT)、C反应蛋白(C-reactive protein,CRP)联合组织型纤溶酶原激活物抑制剂-1 (plasminogen activator inhibitor-1,PAI-1)水平预测老年髋关节术后下肢深静脉血栓(deep vein thrombosis,DVT)的价值。方法:回顾性分析2020年2月至2022年5月收治的165例老年髋关节术患者,男89例,女76例;年龄60~75(66.43±5.48)岁;股骨颈骨折102例,股骨头坏死63例。所有患者入院24 h内均进行血清D-D、FIB、PLT、CRP、PAI-1检测,根据患者是否发生DVT分为DVT组和非DVT组。结果:DVT组患者的D-D、FIB、PLT、CRP、PAI-1水平均高于非DVT组(P<0.001);Spearman分析结果显示,DVT与PLT、CRP、D-D、FIB、PAI-1水平均呈正相关性(r=0.382,0.213,0.410,0.310,0.353,均P<0.001);二分类Logistic回归分析结果显示,D-D、PLT是影响DVT发生的独立因素(OR=0.038,0.960,P=0.032,0.011);D-D、FIB、PLT、CRP、PAI-1及五项联合预测DVT的曲线下面积(area under curve,AUC)分别为0.843、0.692、0.871、0.780、0.819、0.960,五项联合预测的AUC均高于单项预测(P<0.05)。结论:D-D、FIB、PLT、CRP、PAI-1在预测老年髋关节术后发生DVT中具有一定效能,五项联合预测效能更高。

尤瑞克林治疗急性脑梗死对患者血清1型纤溶酶原激活物抑制剂水平及血小板参数的影响

目的探究尤瑞克林治疗急性脑梗死对患者血清1型纤溶酶原激活物抑制剂(PAI-1)水平及血小板参数的影响。方法回顾性分析2020年1月至2022年5月丰城市人民医院收治的82例急性脑梗死患者的临床资料,根据使用药物不同分为观察组(n=47)与对照组(n=35)。对照组采用阿司匹林联合氯吡格雷治疗,观察组在对照组基础上联合尤瑞克林治疗。比较两组临床疗效、美国国立卫生研究院卒中量表(NIHSS)、血清PAI-1、血小板计数(PLT)、血小板体积分布宽度(PDW)、血小板平均体积(MPV)、血小板压积(PCT)、血小板黏附率(PAdT)、血小板聚集率(PAgT)、全血黏度、血浆黏度、不良反应发生率。结果观察组治疗总有效率为89.36%,高于对照组的71.43%,差异有统计学意义(P<0.05)。治疗前、治疗7 d,两组NIHSS评分比较差异无统计学意义;治疗14 d,观察组NIHSS评分低于对照组,差异有统计学意义(P<0.05)。治疗14 d,两组血清PAI-1水平均低于治疗前,且观察组低于对照组,差异有统计学意义(P<0.05)。治疗14 d,两组PLT均高于治疗前,PDW均窄于治疗前,MPV、PCT均小于治疗前,PAdT、PagT均低于治疗前,且观察组PLT高于对照组,PDW窄于对照组,MPV、PCT均小于对照组,PAdT、PagT均低于对照组,差异有统计学意义(P<0.05)。治疗14 d,两组全血黏度、血浆黏度均低于治疗前,且观察组低于对照组,差异有统计学意义(P<0.05)。两组不良反应发生率比较差异无统计学意义。结论尤瑞克林治疗急性脑梗死效果显著,可降低患者血清PAI-1水平及全血黏度、血浆黏度,改善血小板参数,值得临床推广应用。

脓毒症患者血清SERPING1、SERPINE1水平变化及预后意义

目的研究脓毒症患者血清蛋白酶C1抑制剂(SERPING1)、纤溶酶原激活物抑制剂1型(SERPINE1)的表达及预后意义。方法选取2018年3月至2020年3月在该院诊治的132例脓毒症患者为脓毒症组,根据入院28 d内是否死亡,分为死亡组(34例)和生存组(98例)。采用酶联免疫吸附试验检测血清SERPING1、SERPINE1水平。采用多因素Logistic回归模型和受试者工作特征曲线研究血清SERPING1,SERPINE1评估患者死亡的预测价值。结果[相比于对照组,脓毒症组患者血清SERPING1(331.12±51.80 ng/L vs.639.04±91.12 ng/L)水平较低,血清SERPINE1(412.67±64.84 ng/L vs.42.33±10.32 ng/L)水平较高,差异有统计学意义(均P<0.05)]。相比于生存组,死亡组患者血清SERPINE1、降钙素原、C反应蛋白、急性生理与慢性健康评分(APACHEⅡ)评分和序贯器官衰竭评估(SOFA)评分较高,血清SERPING1水平较低,差异有统计学意义(均P<0.05)。血清SERPING1水平与APACHEⅡ评分、SOFA评分呈负相关(r=-0.779、-0.653,均P<0.05),血清SERPINE1水平与APACHEⅡ评分、SOFA评分呈正相关(r=0.740、0.685,均P<0.05)。血清SERPINE1水平、APACHEⅡ评分和SOFA评分是患者死亡的危险因素,血清SERPING1是保护因素。血清SERPING1、SERPINE1联合检测对脓毒症患者死亡预后评估的曲线下面积为0.938(95%CI:0.893~0.968),高于单项指标检测0.860(95%CI:0.812~0.899)、0.838(95%CI:0.781~0.868),差异有统计学意义(Z=3.861、4.015,均P<0.001)。结论脓毒症患者血清SERPING1、SERPINE1水平升高,与患者病情程度有关,两者联合对脓毒症患者预后具有较高的评估价值。