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- W4313593433 abstract "Dahl Salt-Sensitive (DSS) rats develop heart failure with preserved ejection fraction (HFpEF) when fed a high-salt (8 % NaCl) diet. Hypertension-induced inflammation and subsequent ventricular fibrosis are believed to underlie the development of HFpEF. We investigated the role of diet modification in the progression of HFpEF using male DSS rats, fed either a high-salt diet from 7 weeks of age to induce HFpEF, or a normal-salt (0.3 % NaCl) diet as controls. After echocardiographic confirmation of diastolic dysfunction at 14–15 weeks of age along with HF manifestations, the HFpEF rats were randomly assigned to either continue a high-salt diet or switch to a normal-salt diet for an additional 4 weeks. HFpEF rats with diet modification showed improved diastolic function (reduced E/E′ ratio in echocardiogram), increased functional capacity (increased treadmill exercise distance), and reduced pulmonary congestions (lung/body weight ratio), compared to high-salt-fed HFpEF rats. Systolic blood pressure remained high (~200 mmHg), and ventricular hypertrophy remained unchanged. Ventricular arrhythmia inducibility (100 % inducible) and corrected QT interval (on ECG) did not change in HFpEF rats after diet modification. HFpEF rats with diet modification showed prolonged survival and reduced ventricular fibrosis (Masson's trichrome staining) compared to high-salt-fed HFpEF rats. Hence, the modification of diet (from high-salt to normal-salt diet) reversed HFpEF phenotypes without affecting blood pressure or ventricular hypertrophy." @default.
- W4313593433 created "2023-01-06" @default.
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- W4313593433 date "2023-03-01" @default.
- W4313593433 modified "2023-09-26" @default.
- W4313593433 title "Diet modification reverses diastolic dysfunction in rats with heart failure and preserved ejection fraction" @default.
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- W4313593433 doi "https://doi.org/10.1016/j.jmccpl.2023.100031" @default.
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