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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Effect of CCL4-induced cirrhosis on the pathophysiologic course of acute myocardial infarction in nonarteriosclerotic vs arteriosclerotic male rats.

Arteriosclerotic and nonarteriosclerotic rats were treated with carbon tetrachloride (CCL4) to induce cirrhosis of the liver. Massive myocardial infarction was then induced in intact and CCL4-treated animals. During acute necrosis (Days 1 thru 3), animals were killed at 4, 8, 12 and 24 h on Days 1 and 2, and during myocardial repair on Days 4, 5 and 8. During the induction of cirrhosis, animals developed polydypsia, polyuria, and hyperglycemia; during myocardial infarction, the arteriosclerotic + cirrhotic animals developed severe and persistent congestive heart failure, i.e., hydrothorax. Adrenal and thymus gland weights and corticosterone levels indicated that cirrhosis per se increased pituitary--adrenal activity, particularly in arteriosclerotic animals. Enzyme levels of SGOT and SGPT demonstrated severe hepatic damage due to cirrhosis and acute myocardial infarction. Blood triglycerides and cholesterol responded abnormally in cirrhotic animals during acute myocardial ischemia due to their entrapment within hepatic cells. The cirrhotic animals manifested poor myocardial repair with persistent foci of necrosis, calcification, and a high incidence of large, occlusive, atrial thrombi. It is suggested that cirrhosis interferes with lipid metabolism and adrenal steroid conjugation leading to abnormal levels of mineralocorticoids which favor congestive heart failure, poor myocardial repair, and atrial thrombosis.[1]


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