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BACKGROUND Proximal tubular cells produce nitric oxide (NO.). We have shown that under hyperglycemic conditions, cultured proximal tubular cells express cytochrome P450 2E1, which is capable of producing superoxide (O2.). NO. and O2. react to form peroxynitrite (ONOO.), a powerful oxidant. ONOO. nitrosylates tyrosine moieties on proteins causing tissue… (More)
Glycoprotein hormone alpha-subunit (alpha SU) is a recognized product of clinically non-functioning, glycoprotein hormone-secreting and somatotroph adenomas but has not been studied systematically in corticotroph tumours. We have performed immunohistochemistry for alpha SU in a consecutive series of four corticotroph tumours causing Nelson's syndrome, three… (More)
1. Mechanical forces associated with blood flow play important roles in the acute control of vascular tone, the regulation of arterial structure and remodelling and the localization of atherosclerotic plaque. Uraemia is a proatherogenic process and is expected to be associated with impaired vascular reactivity.2. To study this, 12 male Wistar rats were… (More)
Ninety-five calves, mostly Angus, but also of Hevefovd and Shovthovn breeding, born in the University of California herd, were studied, including 54 , born during Spring 1970 , genotypically distributed as 7 mm, 33 m- !-and 14 + + (m being the symbol for the autosomal allele for double-muscling).