BACKGROUND A growing amount of evidence provides support for the hypothesis that acute myocardial infarction(AMI)patients should go through cardiopulmonary exercise testing(CPET)about 3-5 d after AMI is diagnosed,make...BACKGROUND A growing amount of evidence provides support for the hypothesis that acute myocardial infarction(AMI)patients should go through cardiopulmonary exercise testing(CPET)about 3-5 d after AMI is diagnosed,make reasonable exercising prescription,and conduct exercise training under guidance.AIM To investigate the effect of exercise training(ET)on left ventricular systolic function and left ventricular remodeling(LVRM)and to study the possible mechanisms of LVRM by the changes of matrix metallopeptidase 9(MMP-9)and tissue inhibitor of metalloproteinases 1(TIMP-1)in patients with acute STsegment elevation myocardial infarction(STEMI).METHODS Sixty patients with first STEMI undergoing direct percutaneous coronary intervention from February 2008 to October 2008 were randomly assigned to an exercise group(n=30)and a control group(n=30).The levels of MMP-9 and TIMP-1 were measured in all patients at 1 d,10-14 d,30 d,and 6 mo after admission.Two-dimensional echocardiography and cardiopulmonary exercise testing were done in patients at 10-14 d and 6 mo after admission.RESULTS There was no significant difference in CPET at baseline between the exercise group and the control group.At 6 mo,the time of exercise,peak and anaerobic threshold values of O2 uptake,and metabolic equivalents increased in both groups,but markedly increased in the exercise group.At baseline,there were no significant differences in left ventricular ejection fraction(LVEF)between the two groups.At 6 mo,LVEF increased in the exercise group,but not in the control group.At 6 mo,the percentage of patients with positive result of LVRM was 26.6%in the exercise group and 52.6%in the control group(P<0.05).The levels of plasma MMP-9 and TIMP-1 and the ratio of MMP-9 to TIMP-1 in both groups had no significant difference at 1 d and 10-14 d after AMI,but at 30 d and 6 mo,the levels of plasma MMP-9 and TIMP-1 in the exercise group were significantly lower than those in the control group;the ratio of MMP-9 to TIMP-1 in the exercise group was significantly higher than that in the control group.CONCLUSION ET under supervision based on home condition in early and recovery stage of AMI can improve exercise cardiopulmonary function and prevent the LVRM.Therefore,it may reduce unfavorable remodeling response by decreasing the levels of plasma MMP-9 and TIMP-1 and adjusting the ratio of MMP-9 to TIMP-1 hereafter.展开更多
Objective:To study the correlation of the ultrasound parameters of left ventricular remodeling and systolic synchrony in patients with primary hypertension with serum cytokines and matrix metalloproteinases (MMPs).Met...Objective:To study the correlation of the ultrasound parameters of left ventricular remodeling and systolic synchrony in patients with primary hypertension with serum cytokines and matrix metalloproteinases (MMPs).Methods:134 patients with primary hypertension receiving three-dimensional echocardiography examination in our hospital between May 2013 and March 2016 were selected and divided into the group A with normal pattern (n=71), group B with concentric hypertrophy (n=39) and group C with eccentric hypertrophy (n=24) according to the left ventricular internal diameter at end-diastole (LVIDd) and left ventricular mass index (LVMI), and the ultrasound parameters of left ventricular remodeling and systolic synchrony as well as serum content of cytokines and MMPs were determined.Results: The time to minimal systolic volume of 16-segmental standard deviation (SDI), maximum time difference (DIF), Tpe, Tpe interphase and its correction (Tpec), LVIDd, LVMI and left ventricular remodeling index (LVRI) of group B and group C were significantly higher than those of group A (P<0.05), and SDI, DIF, Tpe, Tpec, LVIDd, LVMI and LVRI of group C were significantly higher than those of group B (P<0.05);serum tumor necrosis factor-α (TNF-α), interleukin-17 (IL-17), transforming growth factor-β1 (TGF-β1), matrix metalloproteinase 2 (MMP2), MMP3 and MMP9 content of group B and group C were significantly higher than those of group A (P<0.05), and serum TNF-α, IL-17, TGF-β1, MMP2, MMP3 and MMP9 content of group C were significantly higher than those of group B (P<0.05) and positively correlated with LVIDd, LVMI, LVRI, SDI, DIF, Tpe and Tpec;serum TIMP1 and TIMP2 content of group B and group C were significantly lower than those of group A (P<0.05), and serum TIMP1 and TIMP2 content of group C were significantly lower than those of group B (P<0.05) and negatively correlated with LVIDd, LVMI, LVRI, SDI, DIF, Tpe and Tpec.Conclusions:The ultrasound parameters of left ventricular remodeling and systolic synchrony significantly change in patients with primary hypertension and are closely related to the changes in the content of serum cytokines and MMPs.展开更多
Objective: To investigate the effects of Shenqi Fuzheng injection (参芪扶正注射液, SQFZI) on ventricular remodeling (VR) after acute myocardial infarction (AMI). Methods: Sixty patients with AMI were randomly divided ...Objective: To investigate the effects of Shenqi Fuzheng injection (参芪扶正注射液, SQFZI) on ventricular remodeling (VR) after acute myocardial infarction (AMI). Methods: Sixty patients with AMI were randomly divided into two groups and received conventional therapy and conventional therapy plus SQFZI separately. Matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-9 (TIMP-9) in plasma was measured on the 1st and 14th days after AMI. Results: MMP-9 and MMP-9/TIMP-9 were increased after AMI, after 2-week treatment, the level of MMP-9 and MMP-9/TIMP-9 decreased more significantly in SQFZI group than that in the conventional group (P<0. 05). Conclusion: Early treatment with SQFZI after AMI could reduce the level of MMPs and the production of collagen. It may be useful for the prevention of VR and heart failure after AMI.展开更多
Ventricular remodeling （VR） after myocardial infarction （MI） makes a full impact on left ventricular dilation and dysfunction, severe arrhythmias and even sudden death. Thus it is very interesting and instructive ...Ventricular remodeling （VR） after myocardial infarction （MI） makes a full impact on left ventricular dilation and dysfunction, severe arrhythmias and even sudden death. Thus it is very interesting and instructive to study the underlying regulatory mechanism for VR. Recently, evidenceI suggests that tumor necrosis factor-α （TNF-α） activity can independently influence VR, and aggravate myocardial dysfunction and cell death in the ventricle. The activation of pro-TNF〈t is adjusted by a disintegrin metalloproteinase （ADAM） 10 and ADAM17, the latter might take part in extracellular matrix （ECM） modulation in the borderline region of cardiac infarction.2 However, little is known about the relationship between ADAMsl0, 17 expressions and TNF-α activity in the process of VR after MI. The present study tested the hypothesis in rats that the interaction between ADAMsl0, 17 expressions and TNF-α activity was a contributory mechanism for VR of the healing myocardium, and metoprolol treatment might ameliorate VR inhibiting the mechanism.展开更多
目的探讨原发性高血压患者慢性压力负荷致左心室肥厚与基质金属蛋白酶3(MMP-3)、基质金属蛋白酶9(MMP-9)及金属蛋白酶组织抑制因子1(TIMP-1)血清水平的关系。方法收集原发性高血压患者140例,健康对照组132例,测定MMP-3、MMP-9和TIMP-1;...目的探讨原发性高血压患者慢性压力负荷致左心室肥厚与基质金属蛋白酶3(MMP-3)、基质金属蛋白酶9(MMP-9)及金属蛋白酶组织抑制因子1(TIMP-1)血清水平的关系。方法收集原发性高血压患者140例,健康对照组132例,测定MMP-3、MMP-9和TIMP-1;行心脏彩超检查并计算左室重量指数(LVMI)。结果高血压组LVMI升高[(113.7±9.9)vs(88.3±10.4),P<0.001)],MMP-3、MMP-9和TIMP-1增高[(488.32±100.32 vs 314.59±99.78;340.56±43.21 vs 290.15±33.98;389.16±57.53 vs243.45±62.31;P<0.001)]。以LVMI为因变量的多元逐步回归分析显示,影响因素为年龄、SBP、MMP-3、MMP-9和TIMP-1(r2=0.78,P<0.001)。高血压组按LVMI分为高血压合并左心室肥厚组(A组)、高血压无左心室肥厚组(B组),A组SBP、MMP-3、MMP-9和TIMP-1升高[(178±31 vs 166±25);(490.14±99.13 vs 405.56±53.12);(340.56±43.21 vs 290.15±33.98);(393.45±47.69vs 301.58±39.57);P<0.05]。结论血清MMP-3、MMP-9和TIMP-1水平是高血压合并左心室肥厚的影响因素。展开更多
基金Supported by Beijing Hospitals Authority Incubating Program,No.PZ2021007Beijing Hospitals Authority Youth Program,No.QML20200604Beijing Municipal Health Commission(No.17-3)and the Beijing Natural Science Foundation,No.7184205.
文摘BACKGROUND A growing amount of evidence provides support for the hypothesis that acute myocardial infarction(AMI)patients should go through cardiopulmonary exercise testing(CPET)about 3-5 d after AMI is diagnosed,make reasonable exercising prescription,and conduct exercise training under guidance.AIM To investigate the effect of exercise training(ET)on left ventricular systolic function and left ventricular remodeling(LVRM)and to study the possible mechanisms of LVRM by the changes of matrix metallopeptidase 9(MMP-9)and tissue inhibitor of metalloproteinases 1(TIMP-1)in patients with acute STsegment elevation myocardial infarction(STEMI).METHODS Sixty patients with first STEMI undergoing direct percutaneous coronary intervention from February 2008 to October 2008 were randomly assigned to an exercise group(n=30)and a control group(n=30).The levels of MMP-9 and TIMP-1 were measured in all patients at 1 d,10-14 d,30 d,and 6 mo after admission.Two-dimensional echocardiography and cardiopulmonary exercise testing were done in patients at 10-14 d and 6 mo after admission.RESULTS There was no significant difference in CPET at baseline between the exercise group and the control group.At 6 mo,the time of exercise,peak and anaerobic threshold values of O2 uptake,and metabolic equivalents increased in both groups,but markedly increased in the exercise group.At baseline,there were no significant differences in left ventricular ejection fraction(LVEF)between the two groups.At 6 mo,LVEF increased in the exercise group,but not in the control group.At 6 mo,the percentage of patients with positive result of LVRM was 26.6%in the exercise group and 52.6%in the control group(P<0.05).The levels of plasma MMP-9 and TIMP-1 and the ratio of MMP-9 to TIMP-1 in both groups had no significant difference at 1 d and 10-14 d after AMI,but at 30 d and 6 mo,the levels of plasma MMP-9 and TIMP-1 in the exercise group were significantly lower than those in the control group;the ratio of MMP-9 to TIMP-1 in the exercise group was significantly higher than that in the control group.CONCLUSION ET under supervision based on home condition in early and recovery stage of AMI can improve exercise cardiopulmonary function and prevent the LVRM.Therefore,it may reduce unfavorable remodeling response by decreasing the levels of plasma MMP-9 and TIMP-1 and adjusting the ratio of MMP-9 to TIMP-1 hereafter.
文摘Objective:To study the correlation of the ultrasound parameters of left ventricular remodeling and systolic synchrony in patients with primary hypertension with serum cytokines and matrix metalloproteinases (MMPs).Methods:134 patients with primary hypertension receiving three-dimensional echocardiography examination in our hospital between May 2013 and March 2016 were selected and divided into the group A with normal pattern (n=71), group B with concentric hypertrophy (n=39) and group C with eccentric hypertrophy (n=24) according to the left ventricular internal diameter at end-diastole (LVIDd) and left ventricular mass index (LVMI), and the ultrasound parameters of left ventricular remodeling and systolic synchrony as well as serum content of cytokines and MMPs were determined.Results: The time to minimal systolic volume of 16-segmental standard deviation (SDI), maximum time difference (DIF), Tpe, Tpe interphase and its correction (Tpec), LVIDd, LVMI and left ventricular remodeling index (LVRI) of group B and group C were significantly higher than those of group A (P<0.05), and SDI, DIF, Tpe, Tpec, LVIDd, LVMI and LVRI of group C were significantly higher than those of group B (P<0.05);serum tumor necrosis factor-α (TNF-α), interleukin-17 (IL-17), transforming growth factor-β1 (TGF-β1), matrix metalloproteinase 2 (MMP2), MMP3 and MMP9 content of group B and group C were significantly higher than those of group A (P<0.05), and serum TNF-α, IL-17, TGF-β1, MMP2, MMP3 and MMP9 content of group C were significantly higher than those of group B (P<0.05) and positively correlated with LVIDd, LVMI, LVRI, SDI, DIF, Tpe and Tpec;serum TIMP1 and TIMP2 content of group B and group C were significantly lower than those of group A (P<0.05), and serum TIMP1 and TIMP2 content of group C were significantly lower than those of group B (P<0.05) and negatively correlated with LVIDd, LVMI, LVRI, SDI, DIF, Tpe and Tpec.Conclusions:The ultrasound parameters of left ventricular remodeling and systolic synchrony significantly change in patients with primary hypertension and are closely related to the changes in the content of serum cytokines and MMPs.
文摘Objective: To investigate the effects of Shenqi Fuzheng injection (参芪扶正注射液, SQFZI) on ventricular remodeling (VR) after acute myocardial infarction (AMI). Methods: Sixty patients with AMI were randomly divided into two groups and received conventional therapy and conventional therapy plus SQFZI separately. Matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-9 (TIMP-9) in plasma was measured on the 1st and 14th days after AMI. Results: MMP-9 and MMP-9/TIMP-9 were increased after AMI, after 2-week treatment, the level of MMP-9 and MMP-9/TIMP-9 decreased more significantly in SQFZI group than that in the conventional group (P<0. 05). Conclusion: Early treatment with SQFZI after AMI could reduce the level of MMPs and the production of collagen. It may be useful for the prevention of VR and heart failure after AMI.
基金This work was supported by the grants from the National Natural Science Foundation of Chian(No.30470687)Heilongjiang Doctorate Foundation grant(No.SCX2005020)
文摘Ventricular remodeling （VR） after myocardial infarction （MI） makes a full impact on left ventricular dilation and dysfunction, severe arrhythmias and even sudden death. Thus it is very interesting and instructive to study the underlying regulatory mechanism for VR. Recently, evidenceI suggests that tumor necrosis factor-α （TNF-α） activity can independently influence VR, and aggravate myocardial dysfunction and cell death in the ventricle. The activation of pro-TNF〈t is adjusted by a disintegrin metalloproteinase （ADAM） 10 and ADAM17, the latter might take part in extracellular matrix （ECM） modulation in the borderline region of cardiac infarction.2 However, little is known about the relationship between ADAMsl0, 17 expressions and TNF-α activity in the process of VR after MI. The present study tested the hypothesis in rats that the interaction between ADAMsl0, 17 expressions and TNF-α activity was a contributory mechanism for VR of the healing myocardium, and metoprolol treatment might ameliorate VR inhibiting the mechanism.
文摘目的探讨原发性高血压患者慢性压力负荷致左心室肥厚与基质金属蛋白酶3(MMP-3)、基质金属蛋白酶9(MMP-9)及金属蛋白酶组织抑制因子1(TIMP-1)血清水平的关系。方法收集原发性高血压患者140例,健康对照组132例,测定MMP-3、MMP-9和TIMP-1;行心脏彩超检查并计算左室重量指数(LVMI)。结果高血压组LVMI升高[(113.7±9.9)vs(88.3±10.4),P<0.001)],MMP-3、MMP-9和TIMP-1增高[(488.32±100.32 vs 314.59±99.78;340.56±43.21 vs 290.15±33.98;389.16±57.53 vs243.45±62.31;P<0.001)]。以LVMI为因变量的多元逐步回归分析显示,影响因素为年龄、SBP、MMP-3、MMP-9和TIMP-1(r2=0.78,P<0.001)。高血压组按LVMI分为高血压合并左心室肥厚组(A组)、高血压无左心室肥厚组(B组),A组SBP、MMP-3、MMP-9和TIMP-1升高[(178±31 vs 166±25);(490.14±99.13 vs 405.56±53.12);(340.56±43.21 vs 290.15±33.98);(393.45±47.69vs 301.58±39.57);P<0.05]。结论血清MMP-3、MMP-9和TIMP-1水平是高血压合并左心室肥厚的影响因素。
