Effect of Polyvitaminics (Pyridoxine Hydrochloride, Folic Acid and Cyanocobalamin) in the Concentration of Homocysteine and Lipid Profile in Postmenopausal Women: a Randomized Controlled, Double-blind Clinical Trial

Summary

Introduction: Cardiovascular diseases (CVD) are the main cause of death in Western countries. High levels of homocysteine (He) has been considered an important risk factor for coronary artery disease. Objective: To evaluate the effects of the drug Tenavit® (pyridoxine hydrochloride 4.00mg + folic acid 0.80mg + cyanocobalamin 0.40 mg) on plasma homocysteine concentrations and lipid profile in postmenopausal women. Methods: Sixty women were postmenopausal selected from the outpatient Gynecology Hospital Santa Marcelina that passed by routine consultations and fulfilling the inclusion criteria were invited to the study. The women were randomly allocated to control or experimental group (30 in each group) in a do uble-blind controlled clinical trial. The experimental group received one tablet of Tenavit® daily and the placebo group received the same tablet with the organoleptic characteristics of Tenavit® for a period of 4 months. The women were assessed before the intervention and after 4 months of medication. A self-report questionnaire to assess quality of life (QSF-36) was applied and anthropometric measurements, cholesterol and fractions, triglycerides, fasting glucose, homocysteine and cysteine were evaluated. Results: The only variable that presented significant alteration in both dimensions (between and within group) was the homocysteine. It was observed statistical significant between groups in the final measure for homocysteine (control group: 11.5mmol/ L; experimental group: 9.4 mmo

Timeline

Start

2008-12

Primary completion

2010-01

Completion

2010-05

Publications

• Results Nair KG, Ashavaid TF, Nair SR, Eghlim FF. The genetic basis of hyperhomocysteinemia. Indian Heart J. 2000 Nov-Dec;52(7 Suppl):S16-17. No abstract available.
• Results Chambers JC, McGregor A, Jean-Marie J, Obeid OA, Kooner JS. Demonstration of rapid onset vascular endothelial dysfunction after hyperhomocysteinemia: an effect reversible with vitamin C therapy. Circulation. 1999 Mar 9;99(9):1156-60. doi: 10.1161/01.cir.99.9.1156.
• Results Nappo F, De Rosa N, Marfella R, De Lucia D, Ingrosso D, Perna AF, Farzati B, Giugliano D. Impairment of endothelial functions by acute hyperhomocysteinemia and reversal by antioxidant vitamins. JAMA. 1999 Jun 9;281(22):2113-8. doi: 10.1001/jama.281.22.2113.
• Results Fonseca V, Guba SC, Fink LM. Hyperhomocysteinemia and the endocrine system: implications for atherosclerosis and thrombosis. Endocr Rev. 1999 Oct;20(5):738-59. doi: 10.1210/edrv.20.5.0381. No abstract available.
• Results Lussier-Cacan S, Xhignesse M, Piolot A, Selhub J, Davignon J, Genest J Jr. Plasma total homocysteine in healthy subjects: sex-specific relation with biological traits. Am J Clin Nutr. 1996 Oct;64(4):587-93. doi: 10.1093/ajcn/64.4.587.
• Results Selhub J, Jacques PF, Wilson PW, Rush D, Rosenberg IH. Vitamin status and intake as primary determinants of homocysteinemia in an elderly population. JAMA. 1993 Dec 8;270(22):2693-8. doi: 10.1001/jama.1993.03510220049033.
• Results von Eckardstein A, Malinow MR, Upson B, Heinrich J, Schulte H, Schonfeld R, Kohler E, Assmann G. Effects of age, lipoproteins, and hemostatic parameters on the role of homocyst(e)inemia as a cardiovascular risk factor in men. Arterioscler Thromb. 1994 Mar;14(3):460-4. doi: 10.1161/01.atv.14.3.460.
• Results McKinley MC. Nutritional aspects and possible pathological mechanisms of hyperhomocysteinaemia: an independent risk factor for vascular disease. Proc Nutr Soc. 2000 May;59(2):221-37. doi: 10.1017/s0029665100000252.
• Results van Kempen BJ, Ferket BS, Kavousi M, Leening MJ, Steyerberg EW, Ikram MA, Witteman JC, Hofman A, Franco OH, Hunink MG. Performance of Framingham cardiovascular disease (CVD) predictions in the Rotterdam Study taking into account competing risks and disentangling CVD into coronary heart disease (CHD) and stroke. Int J Cardiol. 2014 Feb 15;171(3):413-8. doi: 10.1016/j.ijcard.2013.12.036. Epub 2013 Dec 27.
• Results Gokkusu C, Ozbek Z, Tata G. Hormone replacement therapy: relation to homocysteine and prooxidant-antioxidant status in healthy postmenopausal women. Arch Gynecol Obstet. 2012 Mar;285(3):733-9. doi: 10.1007/s00404-011-2051-2. Epub 2011 Aug 30.
• Results Reslan OM, Khalil RA. Vascular effects of estrogenic menopausal hormone therapy. Rev Recent Clin Trials. 2012 Feb;7(1):47-70. doi: 10.2174/157488712799363253.
• Results Dodds L, Fell DB, Dooley KC, Armson BA, Allen AC, Nassar BA, Perkins S, Joseph KS. Effect of homocysteine concentration in early pregnancy on gestational hypertensive disorders and other pregnancy outcomes. Clin Chem. 2008 Feb;54(2):326-34. doi: 10.1373/clinchem.2007.097469. Epub 2007 Dec 10.

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