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Objective:To explore the relationship between the expression level of micro RNA-133a(miR-133a) and the indexes of heart failure in patients with ischemic heart failure and its clinical application value.Methods:From January 2018 to September 2019, the clinical data of 80 patients diagnosed as ischemic heart failure in Shenyang Fourth People′s Hospital were analyzed prospectively.According to the classification of New York Heart Association(NYHA), 20 cases were divided into NYHA class Ⅰ group, class Ⅱ group, class Ⅲ group and class Ⅳ group, and 20 healthy people in the same period were selected as the healthy control group.The concentration of brain natriuretic peptide (BNP) in peripheral blood was detected by automatic immune analyzer, the indexes of cardiac function were detected by echocardiography, the expression of miR-133a in serum was detected by qRT-PCR, the difference of expression concentration of miR-133a in different functional grades was compared, and the correlation between the concentration of miR-133a and BNP and the indexes of echocardiography was analyzed.Results:The expression of miR-133a in healthy control group(0.167±0.024), NYHA Ⅰ group(0.289±0.012), NYHA Ⅱ group (0.415±0.034), NYHA Ⅲ group(0.981±0.217) and NYHA Ⅳ group(1.238±0.249) was statistically significant( F=106.4, P<0.001). Pearson correlation analysis showed that miR-133a was positively correlated with BNP in NYHAⅡ, Ⅲ and Ⅳ grade( r=0.815, 95% CI: 0.582-0.924, P<0.001; r=0.465, 95% CI: 0.029-0.753, P<0.05; r=0.749, 95% CI: 0.459-0.895, P<0.001). MiR-133 was negatively correlated with EF( r=-0.811, 95% CI: -0.875--0.719, P<0.001), positively correlated with LVPW, LV and EDV( r=0.331, 95% CI: 0.120-0.513, P<0.01; r=0.845, 95% CI: 0.764-0.896, P<0.001; r=0.705, 95% CI: 0.572-0.803, P<0.001). Conclusion:The expression of miR-133a in patients with ischemic heart failure is increased, which is related to the index of cardiac dysfunction, and has certain diagnostic and prognostic value.
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BACKGROUND AND OBJECTIVES@#To reveal the detail mechanism of miR-484 on myocardial ischemia-reperfusion (MI/R) injury.@*METHODS@#Rats model of MI/R injury was established based on control (Con; sham operate) group, ischemia-reperfusion (I/R) group, miR-484 treatment (miR) group, and I/R-negative control (IR-C) group, followed by pathological and interleukin (IL)-6, tumor necrosis factor (TNF)-α, and IL-1β expression evaluation. Then the myocardial apoptosis, as well as the expression of miR-484, caspase-3, and caspase-9 in myocardium were examined. Finally, the regulatory relation between miR-484 and SMAD family member 7 (SMAD7) was predicated, followed by verification analysis.@*RESULTS@#Compared with Con group, the expression of miR-484 in I/R and IR-C group was decreased. Compared with I/R and IR-C group, the expression of miR-484 was increased in miR group. Compared with Con group, the expression levels of IL-6, TNF-α, and IL-1β in cardiac myocytes of I/R group and IR-C group were increased. Compared with Con group, the apoptotic index, membrane potential of I/R, and the expression of caspase-3/9 were increased in IR-C group. Compared with the I/R and IR-C groups, the apoptotic index of myocardial cells in the ischemic region was decreased, the membrane potential was increased, and the expression of caspase-3/9 was decreased significantly in the miR group. SMAD7 was the target gene of miR-484.@*CONCLUSIONS@#MiR-484 protected myocardial cells from I/R injury by suppressing caspase-3 and caspase-9 expression during cardiomyocyte apoptosis. MiR-484 reduced the expression of IL-6, TNF-α, and IL-1β in MI/R. MiR-484 might alleviate the decreasing of mitochondrial membrane potential in MI/R cells.
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BACKGROUND AND OBJECTIVES: To reveal the detail mechanism of miR-484 on myocardial ischemia-reperfusion (MI/R) injury.METHODS: Rats model of MI/R injury was established based on control (Con; sham operate) group, ischemia-reperfusion (I/R) group, miR-484 treatment (miR) group, and I/R-negative control (IR-C) group, followed by pathological and interleukin (IL)-6, tumor necrosis factor (TNF)-α, and IL-1β expression evaluation. Then the myocardial apoptosis, as well as the expression of miR-484, caspase-3, and caspase-9 in myocardium were examined. Finally, the regulatory relation between miR-484 and SMAD family member 7 (SMAD7) was predicated, followed by verification analysis.RESULTS: Compared with Con group, the expression of miR-484 in I/R and IR-C group was decreased. Compared with I/R and IR-C group, the expression of miR-484 was increased in miR group. Compared with Con group, the expression levels of IL-6, TNF-α, and IL-1β in cardiac myocytes of I/R group and IR-C group were increased. Compared with Con group, the apoptotic index, membrane potential of I/R, and the expression of caspase-3/9 were increased in IR-C group. Compared with the I/R and IR-C groups, the apoptotic index of myocardial cells in the ischemic region was decreased, the membrane potential was increased, and the expression of caspase-3/9 was decreased significantly in the miR group. SMAD7 was the target gene of miR-484.CONCLUSIONS: MiR-484 protected myocardial cells from I/R injury by suppressing caspase-3 and caspase-9 expression during cardiomyocyte apoptosis. MiR-484 reduced the expression of IL-6, TNF-α, and IL-1β in MI/R. MiR-484 might alleviate the decreasing of mitochondrial membrane potential in MI/R cells.
Subject(s)
Animals , Humans , Rats , Apoptosis , Caspase 3 , Caspase 9 , Interleukin-6 , Interleukins , Membrane Potential, Mitochondrial , Membrane Potentials , Myocardium , Myocytes, Cardiac , Reperfusion Injury , Tumor Necrosis Factor-alphaABSTRACT
Objective To observe the long-term smokers with primary hypertension patients characteristics and changes in the circadian rhythm of blood by non-invasive 24-hour ambulatory blood pressure monitoring (ABPM),so as to long-term smokers with primary hypertension the prevention and treatment of patients provide a theoretical reference.Methods A total of 200 cases with essential hypertension from February to October 2012 were divided into 2 groups,group A of 100 patients with longterm smoking (smoked ＞ 10 years the daily smoking 30-40 sticks) with primary hypertension crowd;group B of primary hypertension in 100 patients with non-smoking.All patients underwent 24-hour ABPM the patient's consent,were disabled antihypertensive drugs 1 week,its non-invasive 24-hour ABPM,two groups were compared for 24 h average systolic blood pressure (24 h SBP),24-hour average diastolic pressure (24 h DBP),diurnal mean systolic blood pressure (dSBP),mean nighttime systolic blood pressure (nSBP),daytime average diastolic blood pressure (dDBP),night mean diastolic blood pressure (nDBP)and nighttime systolic blood pressure decreased percentage.Results 24 h SBP,24 h DBP,dSBP,nSBP,dDBP,nDBP in group A were higher than those in group B [(139.60 ± 11.69) mmHg (1 mmHg =0.133kPa) vs.(133.90 ± 12.73) mmHg,(82.03 ± 7.44) mmHg vs.(72.58 ± 8.97) mmHg,(152.50 ± 9.79)mmHg vs.(141.30 ±8.92) mmHg,(84.97 ±7.65) mmHg vs.(76.24 ±8.06) mmHg,(138.20 ±8.73)mmHg vs.(127.00 ±9.74) mmHg,(78.52 ± 10.49) mmHg vs.(68.45 ± 11.01) mmHg,and there were statistically significant differences (P ＜ 0.05); hypertension percentage at night systolic blood pressure in group B was lower than that in group A [(6.23 ± 1.79)％ vs.(10.14 ±2.46)％],there was significant difference (P ＜ 0.05).Conclusions Long-term smoking can make the average blood pressure of essential hypertension crowd 24 h,daytime blood pressure and elevated blood pressure at night,and the long-term smoking population in essential hypertension circadian adjustment feature to affect larger,so as soon as possible to promote smoking cessation and long-acting antihypertensive drugs,thereby reducing the incidence of heart,brain,kidney and other target organ damage.
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Objective To compare the artery function of male and female of all age groups in healthy Shenyang population . Methods By using CVProfilor DO 2020,we measured non-invasively the large artery elasticity index (C1) and small artery elasticity index (C2) of male and female of all age groups in healthy Shenyang population. Results CVProfilor DO-2020 showed C1 was obviously higher than C2 in healthy Shenyang population(P0 05);The results of a second DO-2020 measurement had no significant difference in short term. Conclusion The large artery elasticity was obviously higher than that of small artery.The elasticity of both large and small artery decreased with increasing age .The large artery elasticity of females is a little lower than that of males .There is no difference in small artery elasticity between the male and female.DO-2020 measuring repeated stably.