TWEAK與原發(fā)性高血壓患者心臟重塑的相關(guān)性
[Abstract]:The study of hypertension is one of the most common cardiovascular system diseases, which has been paid more and more attention due to its high morbidity and young age in recent years. The changes of heart function in the early stage of hypertension were mainly characterized by the decrease of the relaxation function and the increase of the degree of stiffness of the myocardium. The long-term pressure load of high blood pressure, the structure and function of the cardiac muscle cell and the extracellular matrix are gradually changed, resulting in the enlargement of the left atrium, the left ventricular hypertrophy and the expansion of the heart remodeling, and finally leads to the adverse cardiovascular events such as arrhythmia, heart failure, sudden cardiac death, and the like. The tumor necrosis factor-like apoptosis inducing agent (TWEAK), as one of the members of the tumor necrosis factor superfamily, is a cross-membrane homologous trimer with a total length of 249 amino acids, and can be hydrolyzed into a soluble cytokine with a plurality of functions, The only clear TWEAK receptor is the fibroblast growth factor inducing early response protein 14 (Fn14), the binding of TWEAK to the Fn14 receptor mediates the biological processes including proliferation, migration, apoptosis, differentiation, angiogenesis and inflammation, and in the case of acute myocardial infarction, heart failure, It plays an important role in the pathophysiological process of cardiovascular system diseases such as hypertension. The increase of the matrix metalloproteinases (MMPs) in the heart tissue can accelerate the degradation of the extracellular matrix of the cardiac muscle cells, and after the degradation of the extracellular matrix, it prevents the effect of the excessive elongation of the cardiac muscle cells, and then the cardiac muscle cells are elongated, the ventricular wall is thin, the left ventricle is expanded, resulting in a significant decrease in the blood function of the heart pump. With the in-depth of the study of hypertension and the application of echocardiography in the clinical, the early heart remodeling caused by hypertension is becoming more and more important. The expression of TWEAK and sMMP-1 in peripheral venous blood of patients with essential hypertension was measured by echocardiography. The left atrial diameter (LAD), left atrial volume (LAV), left atrial volume index (LAVI), and early wave E of mitral flow were measured by echocardiography. Peak ratio E/ E of the peak of atrial contraction wave A, E/ A and the side wall of the mitral annulus in the mitral flow To study the relationship between the expression of TWEAK and the remodeling of hypertensive heart. Purpose 1. To investigate the expression of tumor necrosis factor-like apoptosis-inducing agent in essential hypertension and its relationship with heart remodeling in patients with essential hypertension. 88 patients with essential hypertension were selected as hypertension group, and the 50th percentile of serum TWEAK was divided into high expression group (n = 51) and low expression group (n = 37), and 20 cases of healthy physical examination in the same period were selected as control group. The expression of TWEAK and Fn14 mRNA in peripheral venous blood mononuclear cells (PBMCs) was detected by RT-PCR. The soluble TWEAK (sTWEAK), matrix metalloproteinase-1 (sMMP-1), hypersensitive C-reactive protein (hs-CRP) and fibroblast growth factor were detected by ELISA. Echocardiography was used to measure the peak value ratio E/ E 'of the longitudinal axis of the sternal long axis, the LAD, the LAV, the LAVI, the mitral flow, the early wave E, the mitral flow, the atrial contraction wave A, the E/ A and the side wall motion of the mitral annulus.. Results 1. The expression of TWEAK mRNA in the high-and low-expression groups was higher than that in the control group (P0.05), and the high-expression group was significantly higher than that of the low-expression group (P0.01). The expression of Fn14 mRNA was not statistically different among the groups. The levels of sTWEAK and sMMP-1 in the low expression group were higher than that in the control group (P = 0.02; P = 0.001), and sTWEAK and sMMP-1 were significantly higher in the high expression group than in the lower expression group (P = 0. 006; P 0.01). sFn14 levels were not statistically different between groups. high expression group and low expression group LAVI, E/ E The expression of TWEAK, TWEAK and sMMP-1, LAVI, E/ E' was higher than that in the control group (P0.05). There was a significant positive correlation between hs-CRP and hs-CRP (P0.01). Conclusion TWEAK is highly expressed in patients with high blood pressure; sMMP-1 is highly expressed in patients with high blood pressure; cardiac remodeling in patients with hypertension is related to high expression of TWEAK; TWEAK may be involved in the development of cardiac remodeling by inducing an up-regulation and inflammatory response of sMMP-1.
【學(xué)位授予單位】:山東大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:R544.11
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