Fig. 5

LQF protects cardiac function potentially by regulating intestinal barrier integrity. A The cardiac function indexes LVEF, LVSV and plasma BNP content (pg/mL) of HF patients before and after LQF treatment (oral treatment for 2–4 months, with a daily dose equivalent to 107 g of raw drug). B Plasma LPS (EU/mL), D-lactate (μg/mL) and zonulin (ng/L) content of HF patients. * p < 0.05, *** p < 0.001 vs before treatment. n = 17