Influence of large dose γglobulin on myocardial cardiac myosin heavy chain own IgG antibody titer in patients with dilated cardiomyopathy heart failure / 心血管康复医学杂志

ABSTRACT

Objective:To explore influence of large dose γ globulin on myocardial cardiac myosin heavy chain (CM‐HC) own IgG antibody titer and therapeutic effect in patients with dilated cardiomyopathy (DCM) heart failure (HF) .Methods:A total of 160 DCM + HF patients hospitalized in our department of cardiology from Mar 2011 to May 2014 were selected .According to random number table ,they were randomly and equally divided into routine treatment group (n=80 ,RT group) and γglobulin group (n=80 ,received large dose γ globulin therapy based on RT group) .Cardiac function indexes ,IgG antibody titer and serum levels of cTnT and cTnI were observed and com‐pared between two groups before and after treatment .Results:Compared with before treatment after six -month treatment ,there were significant reductions in LVEDd [ (67.50 ± 5.50) mm vs .(56.50 ± 2.50) mm] and LVESd [ (55.50 ± 6.80) mm vs .(43.50 ± 2.30) mm] ,and significant rise in LVEF [ (33.50 ± 3.50)% vs .(53.50 ± 8.50)% ] in γglobulin group ,and only LVEF significantly rose [ (32.80 ± 4.20)% vs .(41.50 ± 5.50)% ] in RT group , P< 0.05 all;compared with RT group after six -month treatment , there were significant reductions in LVEDd [ (63.50 ± 2.50) mm vs .(56.50 ± 2.50) mm] and LVESd [ (51.60 ± 4.80) mm vs .(43.50 ± 2.30) mm] , and significant rise in LVEF in γglobulin group , P<0.05 all .On one ,three ,five and six months after treatment , IgG antibody titer significantly reduced in γglobulin group and they were significantly lower than those of RT group (P<0.05 all) .After six -month treatment ,cTnT and cTnI levels of both groups were significantly lower than those of before treatment ( P< 0.05 all ) , compared with RT group , there were significant reductions in cTnT [ (0.55 ± 0.10)μg/L vs .(0.26 ± 0.02)μg/L] and cTnI levels [ (1.20 ± 0.40)μg/L vs .(0.60 ± 0.10)μg/L] in γglobulin group , P<0.05 both .Conclusion:Large dose γglobulin can significantly improve myocardial function ,re‐duce myocardial CMHC own IgG antibody level and serum concentrations of cTnT and cTnI in DCM + HF pa‐tients ,so it’ s worth extending .