Objective To investigate the effect of acute myocardium ischemic on heart function of pregnancy rat.Methods 13 female SD rats and 6 early pregnancy rats were divided into normal group, unpregnant group with acute myocardial infarction and early pregnant group with acute myocardial infarction. The anterior branch of the left coronary artery was ligated. 3 weeks later, Image 1.31 software was used to measure areas of myocardial infarction,and to evaluate hemodynamics of heart with powerLAB4.12, and cardiac tissues were stained with Massion. Results Compared with unpregnant group with acute myocardial infarction , the early pregnant group with acute myocardial infarction had less myocardial infarction area (28. 86% vs. 36. 8%), and had a higher left ventricle end systolic pressure, ±dp/dt max, and lower left ventricle end diastolic pressure. Massion stain showed the amount of collagen of the lesion was less in the early pregnant group with acute myocardial infarction than that in unpregnant group.Conclusion The early pregnant group with acute myocardial infarction had better heart contractive and diastolic function.

Objective To observe the changes of inflammatory factors and clinical parameters on septic patients with hemoperfusion,and to discuss the application of hemoperfusion on sepsis. Methods 43 patients with sepsis were divided into treatment group and control group randomly. In the treatment group,the patients received conventional treatment and hemoperfusion together,which performed every 24 hours,continuously for 3 times when they arrived in ICU in the first hour. The concentrations of TNF-α,IL-6,IL-10 and PAF were dynamically detected before hemoperfusion,after 24 hours,48 hours and 72 hours in treatment group. The concentrations of TNF-α,IL-6,IL-10 and PAF were compared between the two groups after 72 hours. So did the clinical parameters as WBC count,CRP,PCT and blood lactate acid. Results The concentrations of TNF-α,IL-6, IL-10 and PAF were increased significantly in the early stage of sepsis,and were decreased obviously after hemoperfusion(P < 0.01). After 72 hours treatment,the concentrations of TNF-α,IL-6 and PAF were decreased rapidly,so did the level of CRP,PCT and blood lactate acid. There were significant differences between the two groups(P < 0.05). ConclusionHemoperfusion could remove the inflammatory factor of septic patients and improve the clinical symptoms of them.

Objective To evaluate the early diagnostic value of circulating microRNA-1 (miR-1) on acute myocardial infarction (AMI). Methods A prospective cohort study was conducted. The patients with chest pain admitted to the Second People's Hospital of Wuxi from November 2012 to June 2015 were enrolled. According to AMI diagnostic criteria, the patients were divided into AMI group and non-AMI group, and healthy individuals during the same period were served as heath controls. The venous samples of the onset patients were collected within 3 hours after admission. The plasma miR-1 was determined by real-time quantitative reverse transcription-polymerase chain reaction (RT-PCR), and the levels of plasma cardiac troponin I (cTnI) and MB isoenzyme of creatine kinase (CK-MB) were measured by electrochemiluminescence. The correlation between plasma miR-1 and cTnI as well as CK-MB was performed by Spearman analysis. The early diagnostic performance of plasma miR-1, cTnI, and CK-MB for AMI was estimated by receiver operating characteristic (ROC) curve analysis. Results There were 127 patients in AMI group, and 107 in non-AMI group, including 82 patients with angina pectoris, 2 with pulmonary embolism, 3 with aortic dissection, 2 with acute pericarditis, 3 with myocarditis, 13 with acute heart failure, and 2 with peptic ulcer. Ninety volunteers were served as healthy controls. There was no difference in clinical characteristics including gender and hyperlipidemia between AMI group and non-AMI group. The expressions of plasma miR-1, cTnI and CK-MB were significantly increased in AMI patients as compared with those of the healthy controls [miR-1 (2-ΔΔCt): 4.32±2.60 vs. 1.44±0.75 and 0.98±0.18, cTnI (μg/L): 3.23 (0.63, 10.70) vs. 0.02 (0.00, 0.17) and 0.00 (0.00, 0.00), CK-MB (U/L): 32.40 (14.20, 95.40) vs. 14.40 (11.20, 17.10) and 8.90 (8.28, 9.50), all P < 0.01]. The expression of plasma miR-1 had a significantly positive correlation with cTnI and CK-MB in AMI patients (r1 = 0.395, r2 = 0.490, both P < 0.000). It was demonstrated by ROC curve analysis that the area under ROC curve (AUC) for the diagnostic value of miR-1 on AMI was 0.905 [95% confidence interval (95%CI) = 0.860-0.950, P = 0.000], the sensitivity was 86.6%, and the specificity was 95.4%; the AUC for cTnI was 0.908 (95%CI = 0.870-0.946, P = 0.000), the sensitivity was 81.9%, and the specificity was 95.9%; the AUC for CK-MB was 0.795 (95%CI = 0.736-0.854, P = 0.000), the sensitivity was 63.0%, and the specificity was 92.9%. Conclusions Plasma miR-1 has the capacity in early diagnosis of AMI, superior to CK-MB, and equal to cTnI. It can provide additional diagnostic information beyond cTnI. The diagnostic accuracy for early AMI can be improved with the combination of plasma miR-1 and cTnI.

Objective:To investigate the relationship between plasma beta-2 microglobulin(β2M)levels and the total magnetic resonance imaging(MRI)burden of cerebral small-vessel disease(CSVD)in elderly patients with lacunar stroke.Methods:A total of 93 elderly patients with lacunar stroke admitted to the Department of Neurology, Changzhou Second People's Hospital form August 2018 to August 2019 were enrolled retrospectively, all with complete records of cranial magnetic resonance imaging and plasma β2M measurement.According to the total MRI CSVD burden, which ranges from an ordinal score of 0 to 4, patients were divided into 5 groups.Single-factor analysis was used to compare clinical data between the 5 groups.The association between the plasma β2M level and total MRI CSVD burden was analyzed by ordered multiple Logistic regression models.Results:Among elderly patients with lacunar infarction, 19 had a CSVD score of 0, 19 had a score of 1, 23 had a score of 2, 21 had a score of 3, and 11 had a score of 4, with statistically significant differences in age, percentage with diabetes, systolic blood pressure, diastolic blood pressure, glycosylated hemoglobin, plasma β2M, and eGFR between the 5 groups( P<0.05). Spearman correlation analysis showed that plasma β2M level was significantly positively correlated with total MRI CSVD burden( r=0.687, P<0.001). In ordered multivariate logistic regression models, after adjustment for possible confounding factors such as age, sex and hypertension, the results demonstrated that plasma β2M level( OR=5.253, 95% CI: 2.350-11.740, P<0.001)was an independent risk factor for total MRI CSVD burden. Conclusions:In elderly lacunar stroke patients, the plasma β2M level is closely related to the total MRI CSVD burden and can be used as a marker for predicting the severity of lesions.

Objective:To evaluate the diagnostic value of circulating microRNA-1 (miR-1) in early coronary artery plaque rupture in patients with stable coronary artery disease (SCAD).Methods:A prospective cohort study was conducted. Sixty-seven patients with SCAD admitted to the department of cardiology of the Third Affiliated Hospital of Soochow University from January to June in 2019 were enrolled. All patients had completed coronary angiography (CAG), percutaneous coronary intervention (PCI) single stent implantation or only CAG was performed according to the CAG results. Blood samples were collected before (0 hour) and 3 hours after the procedure. The expression of plasma miR-1 was detected by real-time quantitative reverse transcription-polymerase chain reaction (RT-PCR), and electrocardiogram was used to detect cardiac troponin I (cTnI) levels. The difference of miR-1 and cTnI levels in PCI or CAG patients before and after procedure were compared, and the value for early diagnosis of coronary artery plaque rupture in SCAD patients was evaluated. The diagnostic efficacy was evaluated by the receiver operating characteristic curve (ROC curve).Results:There were 38 CAG patients and 29 PCI patients. There were no significant differences in gender, age, previous history (without hypertension history) and baseline data of cardiac function between the two groups. The expression of miR-1 after PCI was significantly higher than that before PCI [2 -ΔΔCt: 2.11 (1.56, 2.73) vs. 1.26 (1.07, 1.92), P < 0.01], and there was no significant difference in cTnI level before and after PCI [μg/L: 0.00 (0.00, 0.02) vs. 0.00 (0.00, 0.02), P > 0.05]. There were no significant differences in miR-1 and cTnI levels before and after procedure in the CAG group [miR-1 (2 -ΔΔCt): 1.09 (1.00, 1.40) vs. 1.21 (1.00, 1.71), cTnI (μg/L): 0.00 (0.00, 0.02) vs. 0.00 (0.00, 0.02), both P > 0.05]. ROC curve analysis showed that the area under ROC curve (AUC) and 95% confidence interval (95% CI) of miR-1 in the diagnosis of coronary plaque rupture were 0.794 (0.687-0.900), P < 0.01, the sensitivity was 82.8%, the specificity was 68.4%, and the optimal cut-off value was 1.51. The AUC and 95% CI of the difference of miR-1 before and after operation (ΔmiR-1) were 0.704 (0.567-0.842), P = 0.004, the sensitivity was 62.1%, the specificity was 84.2%, and the optimal cut-off value was 0.39. The efficancy of miR-1 and ΔmiR-1 after procedure to diagnose coronary plaque rupture in patients with SCAD was similar ( Z = 1.287, P = 0.198). However, baseline miR-1 might not predict whether patients with SCAD need PCI or not (AUC = 0.630, P > 0.05). Multivariate binary Logistic regression analysis showed that increased postoperative miR-1 expression was an independent risk factor for coronary plaque rupture in SCAD patients [odds ratios ( OR) = 2.887, 95% CI was 1.044-7.978, P = 0.041]. Conclusion:Circulating miR-1 might have the value for early diagnosis of coronary artery plaque rupture in SCAD patients.