AFLUID July 46/1
نویسندگان
چکیده
Conrad, Kirk P., Laurie J. Kerchner, and Monique D. Mosher. Plasma and 24-h NOx and cGMP during normal pregnancy and preeclampsia in women on a reduced NOx diet. Am. J. Physiol. 277 (Renal Physiol. 46): F48–F57, 1999.—We tested the hypothesis that nitric oxide (NO) biosynthesis increases during normal human pregnancy and decreases in preeclampsia. The major metabolites of NO, nitrate and nitrite (NOx), were measured in both the plasma and 24-h urine of women subjected to a reduced NOx diet. In this way, the plasma and urinary levels mainly reflected endogenous production rather than dietary intake. Moreover, we assessed cGMP, a second messenger of NO, in the same samples. Both NOx and cGMP assays were validated in our laboratory. We first conducted a cross-sectional study of nonpregnant women (n 5 15), normal pregnant women in the first (n 5 9), second (n 5 17) and third (n 5 22) trimesters, as well as women with preeclampsia (n 5 15) and transient hypertension of pregnancy (n 5 7). We also performed a serial study in the same women (n 5 9) before, during, and after pregnancy. Taken together, the results of the two investigations suggested marked increases in cGMP production especially during the first trimester when the maternal circulation is rapidly vasodilating. In contrast, whole body NO production as estimated by the plasma level and urinary excretion of NOx was not elevated during the first trimester. Finally, unequivocal demonstration of reduced NO biosynthesis in preeclampsia was not forthcoming.
منابع مشابه
AFLUID July 46/1
DOUGLAS N. HENRY,1,2 JULIA V. BUSIK,1 FRANK C. BROSIUS III,3 AND CHARLES W. HEILIG4 1Department of Physiology, 2Department of Pediatrics and Human Development, Division of Pediatric Endocrinology, College of Human Medicine, Michigan State University, East Lansing 48824-1101; 3Department of Medicine, Division of Nephrology, University of Michigan Medical School and Ann Arbor Veterans Affairs Hos...
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متن کاملAFLUID July 46/1
Thomson, R. Brent, and Peter S. Aronson. Immunolocalization of Ksp-cadherin in the adult and developing rabbit kidney. Am. J. Physiol. 277 (Renal Physiol. 46): F146–F156, 1999.—The potential for Ksp-cadherin involvement in either the development or maintenance of the metanephric kidney was assessed by immunocytochemical localization of a monoclonal antibody directed against the rabbit isoform o...
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