Plasma Ascorbic Acid Concentrations Are Related to Cardiovascular Risk Factors in African-Americans

Aviv, 1989, Racial differences in ion regulation and their possible links to hypertension in blacks, Hypertension, 14, 584, 10.1161/01.HYP.14.6.584 Blanchard, 1991, Effects of gender on vitamin C pharmacokinetics in man, J. Am. Coll. Nutr, 10, 453, 10.1080/07315724.1991.10718171 Bobek, 1978, Serum triglycerides and post-heparin lipolytic activity in guinea-pigs with latent vitamin C deficiency, Experientia, 34, 1554, 10.1007/BF02034669 Bordia, 1980, The effect of vitamin C on blood lipids, fibrinolytic activity and platelet adhesiveness in patients with coronary artery disease, Atherosclerosis, 35, 181, 10.1016/0021-9150(80)90083-0 Choi, 1991, Correlation of blood pressure with plasma ascorbic acid, Nutr. Res,, 11, 1377, 10.1016/S0271-5317(05)80470-1 Department of Health and Human Services. (1976-1988) Agriculture Handbook 8: 1–21. Washington, DC: US Government Printing Office. Efstratopoulos, 1993, Effect of antioxidants on acute blood pressure response to smoking in normo-tensives and hypertensives., J. Hypertens., 11, S112 Feldman, 1992, Ascorbic acid supplements and blood pressure, A four week pilot study. Ann. NY Acad. Sci, 669, 342, 10.1111/j.1749-6632.1992.tb17118.x Friedewald, 1972, Estimation of plasma low-density lipoprotein concentration without use of the preparative centrifuge, Clin. Chem, 18, 449, 10.1093/clinchem/18.6.499 Garry, 1982, Nutritional status in a healthy elderly population: vitamin C, Am. J. Clin. Nutr, 36, 332, 10.1093/ajcn/36.2.332 Hallfrisch, 1994, High plasma vitamin C associated with high plasma HDL and HDLj cholesterol, Am. J. Clin. Nutr, 60, 100, 10.1093/ajcn/60.1.100 Hennessy, 1982, Racial differences in intact erythrocyte ion transport, Ann. Clin. Lab. Sci, 12, 35 Jacques, 1992, Relationship of vitamin C status to cholesterol and blood pressure, Ann. N.Y. Acad. Sci, 669, 205, 10.1111/j.1749-6632.1992.tb17101.x Jacques, 1992, Effects of vitamin C on high-density lipoprotein cholesterol and blood pressure, J. Am. Coll. Nutr, 11, 139, 10.1080/07315724.1992.12098235 Jacques, 1987, Ascorbic acid, HDL and total plasma cholesterol in the elderly., J. Am. Coll. Nutr, 6, 169, 10.1080/07315724.1987.10720177 Janero, 1990, Malondialdehyde and thiobarbituric acid-reactivity as diagnostic indicators of lipid peroxides and perox-idative tissue injury, Free Radical Biol. & Med, 9, 515, 10.1016/0891-5849(90)90131-2 Jialal, 1990, Physiologic levels of ascorbate inhibit the oxidative modification of low density lipoprotein., Atherosclerosis, 82, 185, 10.1016/0021-9150(90)90039-L Koh, 1984, Effect of vitamin C on blood parameters of hypertensive subjects, Oklahoma State Med. Assoc. Journal, 77, 177 Koh, 1980, Comparison of selected blood components by race, sex, and age, Am. J. Clin. Nutr, 33, 1828, 10.1093/ajcn/33.8.1828 Krzanowski, 1991, Oxidants, antioxidants, and cardiovascular disease, J. Florida Med. Assoc, 78, 435 Melby, 1989, Relation between vegetarian/nonvegetarian diets and blood pressure in black and white adults, Am. J. Public Health, 79, 1283, 10.2105/AJPH.79.9.1283 Melby, 1994, Blood pressure and blood lipids among vegetarian, semivegetarian, and nonveg-etarian African Americans, Am. J. Clin. Nutr, 59, 103, 10.1093/ajcn/59.1.103 Moran, 1993, Plasma ascorbic acid concentrations relate inversely to blood pressure in human subjects, Am. J. Clin. Nutr, 57, 213, 10.1093/ajcn/57.2.213 Prabha, 1990, Free radical generation, lipid peroxidation and essential fatty acids in uncontrolled essential hypertension, Prostaglandins, Leukotrienes Essent. Fatty Acids, 41, 27, 10.1016/0952-3278(90)90127-7 Salonen, 1988, Blood pressure, dietary fats, and antioxidants, Am. J. Clin. Nutr, 48, 1226, 10.1093/ajcn/48.5.1226 Tatum, 1990, Measurement of malondialdehyde by high performance liquid chromatography with fluorescence detection, Lipids, 2, 3030 Trout, 1991, Vitamin C and cardiovascular risks, Am. J. Clin. Nutr, 53, 322S, 10.1093/ajcn/53.1.322S Vanderjagt, 1987, Ascorbic acid intake and plasma levels in healthy elderly people, Am. J. Clin. Nutr, 46, 290, 10.1093/ajcn/46.2.290 Yagi, 1976, A simple fluorimetric assay for lipoperoxide in blood plasma, Biochem. Med, 15, 212, 10.1016/0006-2944(76)90049-1 Yalcin, 1989, Increased plasma and erythrocyte lipid peroxidation in hyperli-pidemic individuals, Atherosclerosis, 80, 169, 10.1016/0021-9150(89)90025-7 Yoshioka, 1984, Inverse association of serum ascorbic acid level and blood pressure on rate of hypertension in male adults aged, Int. J. Vitam. Nutr. Res., 54, 343 Zannoni, 1974, Rapid micromethod for the determination of ascorbic acid in plasma and tissues, Biochem. Med, 11, 41, 10.1016/0006-2944(74)90093-3