Taking a bite out of hypertrophic cardiomyopathy: soy diet and disease
J. Clin. Invest. Cathy J. Hatcher, et al. 116:16 doi:10.1172/JCI27455 [
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Figure 2Soy diet alters the physiological cardiac response to HCM in a sex-dependent manner (
1).
(
A) Female HCM mice, which have high endogenous levels of estrogen, were placed on a standard soy diet high in phytoestrogens. Cardiac growth was attenuated in these mice, and contractile function was preserved. (
B) Male HCM mice, who have low endogenous levels of estrogen, consumed a standard soy diet high in phytoestrogens. Relative cardiac growth was augmented in these mice. A decrease in contractile function was also observed along with LV chamber dilation and wall thinning. The potential molecular and physiologic mechanisms underlying these events are shown. All HCM mice consuming a soy-free, casein diet were significantly heavier than those consuming the standard soy diet. However, the female HCM mice consuming a soy-free, casein diet (
C) did not demonstrate a hypertrophic response whereas the male HCM mice did (
D). In addition, the casein diet did not negatively impact contractile function in these mice.