Sultan Noreen, Khan Mudassir Ahmad, Malik Salman
Department of Biochemistry, Ayub Medical College, Abbottabad, Pakistan.
J Ayub Med Coll Abbottabad. 2007 Oct-Dec;19(4):78-81.
Hyperhomocysteinemia is an independent risk factor for atherosclerotic diseases including Ischaemic heart disease, stroke and peripheral vascular disease. Homocysteine (Hcy) is an intermediate formed during the catabolism of essential sulphur containing amino acid methionine, increased Hcy is associated with endothelial dysfunctions in healthy human. Plasma Hcy is significantly lower in premenopausal women than young men but after menopause basal homocysteinemia increases significantly in women approaching those in men. Several studies showed that hyperhomocysteinemia to be stronger risk factor for CHD (Coronary Heart Disease) in women than men. It seems likely that altered hormonal status and age related low folate intake are responsible for this. The present study was designed to evaluate the effect of folic acid supplements for six months, on Hcy level in postmenopausal women.
Hcy was estimated by Flourescence Polarization Immunoassay (FPIA).
There was a significant (P < 0.001) decrease in Hcy level after six months of folic acid supplements.
Hcy is an independent risk factor for atherosclerotic disease, this study favours the view that after menopause Hcy level increases significantly and a simple non Toxic and relatively inexpensive vitamin (folic acid) intervention might be useful in primary cardiovascular prevention in this high risk group because Hcy is a stronger risk factor for CHD in postmenopausal women than men.
高同型半胱氨酸血症是包括缺血性心脏病、中风和外周血管疾病在内的动脉粥样硬化疾病的独立危险因素。同型半胱氨酸(Hcy)是含硫必需氨基酸甲硫氨酸分解代谢过程中形成的一种中间产物,健康人体内Hcy升高与内皮功能障碍有关。绝经前女性的血浆Hcy水平显著低于年轻男性,但绝经后,女性的基础高同型半胱氨酸血症显著升高,接近男性水平。多项研究表明,高同型半胱氨酸血症在女性中比在男性中是冠心病(CHD)更强的危险因素。激素状态改变和与年龄相关的低叶酸摄入似乎是造成这种情况的原因。本研究旨在评估叶酸补充剂六个月对绝经后女性Hcy水平的影响。
采用荧光偏振免疫分析法(FPIA)测定Hcy。
补充叶酸六个月后,Hcy水平显著降低(P < 0.001)。
Hcy是动脉粥样硬化疾病的独立危险因素,本研究支持以下观点:绝经后Hcy水平显著升高,一种简单、无毒且相对便宜的维生素(叶酸)干预措施可能对这一高危人群的心血管一级预防有用,因为Hcy在绝经后女性中是比男性更强的冠心病危险因素。