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Yıl:2007; Cilt: 9; Sayı: 3>> Özet
Türkiye'de Psikiyatri; 2007;9(3):154-159
Alzheimer Hastalarında Kan B12 Vitamini, Folat ve Homosistein Seviyeleri
İ Eren, R Sütçü, İÇ İnanlı, R Özcankaya, N Delibaş
Süleyman Demirel Üniversitesi Tıp Fakültesi Psikiyatri Anabilim Dalı, Isparta
Amaç: Plazma homosistein düzeyi yüksekliği vasküler hastalıklar için risk faktörüdür. Çalışmalar Alzheimer
Hastalığı (AH)'nın patogenezinde vasküler faktörlerin katkısı olduğunu göstermektedir. Bu çalışmanın amacı
AH ile homosistein ve onun biyolojik belirleyicileri olan folat ve B12 vitamini kan düzeyleri arasında ilişkiyi
araştırmaktır.
Yöntem: Çalışmaya DSM-IV kriterlerine göre Alzheimer tipi deman tanısı konan 112 hasta ve bilişsel bozukluğu
olmayan 63 bireyden oluşan kontrol grubu alınmıştır. Çalışmaya alınan bireylere Kısa Akıl Muayenesi
Testi, Yaşlılık Depresyon Ölçeği uygulanmış ve vitamin B12, folat ve homosistein kan düzeyleri ölçülmüştür.
Bulgular: Alzheimer grubunda folat düzeyi kontrol grubundan anlamlı olarak düşük, homosistein düzeyi
yüksek bulunmuştur. Bununla birlikte B12 vitamini düzeyleri arasında anlamlı fark bulunmamıştır.
Sonuç: Bizim sonuçlarımız düşük folat düzeyinin ve hiperhomosisteineminin AH için risk faktörü olabileceğini
desteklemektedir. Bu bulgulara göre AH için risk grubunda olan yaşlı bireylere folat desteği önerilmesi
düşünülmelidir.
Blood Levels of Vitamin B12, Folate and Homocysteine in Patients with Alzheimer?s Disease
Objectives: Elevated plasma homocysteine level is a risk factor for vascular disease. Studies suggest that vascular factors may contribute to
pathogenesis of Alzheimer Disease (AD). The aim of this study was, to examine the association of AD with blood level of homocysteine, and
its biologic determinants, folate and vitamine B12.
Methods: In this study, 112 patients who had been diagnosed as Alzheimer type dementia as to DSM-IV criterias, and the control group of 63
subject who had no cognitive disorders were included in the study. Mini Mental State Examination, Geriatric Depression Scale were applied
and the levels of vitamine B12, folate and homocysteine were determined in the study groups.
Results: Folate levels were significantly lower and homocysteine levels were significantly higher in AD group than control group. There were
not any significant differencs in vitamin B12 levels between the groups.
Conclusions: Our findings have supported that low folate level and hyperhomocysteinaemia are risk factors for AD. According to these findings,
folate supplementation might be suggested to the elderly individuals, particularly who are in high risk group of AD.

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