Uncoupling activity of the anthelmintic oxyclozanide in rodents

The uncoupling activity of oxyclozanide in warm blooded animals has been studied in whole animals, isolated tissue in vitro and on mitochondrial preparations. The onset of post mortem rigidity in mice and rats is accelerated and a contracture of striated muscle is produced. Oxyclozanide (1 muM) stimulated rat liver mitochondrial respiration and stimulated an ATP-ase activity.

Histopathology of early myocardial infarcts. A new approach

The histopathology of human myocardial infarcts is reviewed in a series of 46 cases ranging from sudden death to a clinical age of 3 days. A set of histopathologic features is described whereby the diagnosis of acute myocardial infarction can be made, even in cases of sudden death, on routine sections and even after considerable autolysis. This is primarily a stretching and waviness of the myocardial fibers, especially at the border of the infarcted area. Its mechanism is probably twofold: the rythmical pull exerted by the normal myocardium against the infarcted paralyzed area and the outward bulging of this area at every systole. On the basis of human material alone, it may be inferred that this pattern develops very rapidly: surely less than 1 hour and perhaps a few minutes after the local circulation has failed.

Ultrastructural and light microscope studies on rigor-extended sarcomeres in avian and porcine skeletal muscles

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