Xanthine Oxidase Activation Modulates the Endothelial (Vascular) Dysfunction Related to HgCl Exposure Plus Myocardial Infarction in Rats.

Heavy metal exposure is associated with cardiovascular diseases such as myocardial infarction (MI). Vascular dysfunction is related to both the causes and the consequences of MI. We investigated whether chronic exposure to low doses of mercury chloride (HgCl) worsens MI-induced endothelial dysfunction 7 days after MI.

A single resistance exercise session improves myocardial contractility in spontaneously hypertensive rats.

Resistance training evokes myocardial adaptation; however, the effects of a single resistance exercise session on cardiac performance are poorly understood or investigated. This study aimed to investigate the effects of a single resistance exercise session on the myocardial contractility of spontaneously hypertensive rats (SHRs). Male 3-month-old SHRs were divided into two groups: control (Ct) and exercise (Ex).