نتایج جستجو برای: methylenetetrahydrofolate reductase deficiency

تعداد نتایج: 180150  

Journal: :Haematologica 2000
C H Ho

BACKGROUND AND OBJECTIVES Thromboembolic diseases remain a major cause of morbidity and mortality in most countries. The present study was thus conducted to determine the influences of age, sex, the methylenetetrahydrofolate reductase (MTHFR) gene mutation and the B vitamins on the plasma homocysteine (Hcy) levels in the Chinese. Our previous study found that Chinese carry the same mutation of ...

Journal: :reports of biochemistry and molecular biology 0
reza ebrahimzadeh-vesal tel: +98 4115541221; fax: +98 4115541221 roza azam department of medical genetics, faculty of medicine, tehran university of medical sciences, tehran, iran arvin ghazarian department of medical genetics, faculty of medicine, tehran university of medical sciences, tehran, iran mogge hajesmaeili department of biology, islamic azad university of parand, tehran, iran. najmeh ranji department of genetics, faculty of sciences, islamic azad university, rasht branch, rasht, iran. mohammad reza ezzati faculty of medicine, tehran university of medical sciences, tehran, iran.

recurrent pregnancy loss is usually defined as the loss of two or more consecutive pregnancies before 20 weeks of gestation, which occurs in approximately 5% of reproductive-aged women. it has been suggested that women with thrombophilia have an increased risk of pregnancy loss and other adverse pregnancy outcomes. thrombophilia is an important predisposition to blood clot formation and is cons...

Journal: :The Proceedings of the Nutrition Society 2004
Susan J Duthie Sabrina Narayanan Linda Sharp Julian Little Graham Basten Hilary Powers

Lower levels of dietary folate are associated with the development of epithelial cell tumours in man, particularly colo-rectal cancer. In the majority of epidemiological studies blood folate or reported folate intake have been shown to be inversely related to colo-rectal cancer risk. Folate, via its pivotal role in C1 metabolism, is crucial both for DNA synthesis and repair, and for DNA methyla...

Journal: :JAMA 1998
K S McCully

The importance of hyperhomocysteinemia in the pathogenesis of arteriosclerosis was first recognized by study of vascular pathology in children with homocystinuria caused by 2 different enzymatic abnormalities of homocysteine metabolism.1 Homocystinuria caused by deficiency of cystathionine synthase, a pyridoxal phosphate-dependent enzyme, is characterized by vascular abnormalities and frequent ...

Journal: :Stroke 2003
Karin Kurnik Andrea Kosch Ronald Sträter Rosemarie Schobess Christine Heller Ulrike Nowak-Göttl

BACKGROUND AND PURPOSE The present study was performed to evaluate the rate of recurrent symptomatic thromboembolism with respect to prothrombotic risk factors and underlying clinical conditions. METHODS In a series of 215 consecutively enrolled neonates with arterial ischemic stroke (AIS), the factor V G1691A mutation, factor II G20210A variant, methylenetetrahydrofolate reductase (MTHFR) T6...

Journal: :Journal of the Chinese Medical Association : JCMA 2005
Nain-Feng Chu

Many studies have shown that hyperhomocysteinemia may be an independent risk factor for thromboembolic disease. However, the results among studies and populations have not been consistent. Furthermore, the possible mechanisms of hyperhomocysteinemia in vascular diseases are controversial. Mutations in the MTHFR (5,10-methylenetetrahydrofolate reductase) gene, resulting in rising levels of plasm...

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