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Yıl:2022; Cilt: 59; Sayı: 2>> Özet
TAM METİN
Nöropsikiyatri Arşivi; 2022;59(2):91-97
Şizofreni Hastalarında BDNF Geni Val66Met Polimorfizminin İntihar Girişimi, Odaklanmış Dikkat ve Yanıt İnhibisyonu ile İlişkisi
Ö Bolat Kaya, H Kaya, A Civan Kahve, A Enez Darçın, RS Yalçın Çavuş, N Dilbaz
Ankara
Amaç: Bu çalışmada remisyondaki şizofreni hastalarında BDNF geni Val66Met polimorfizmi ile klinik belirtiler, dikkat ve yürütücü işlevler arasındaki ilişki araştırıldı. Ayrıca BDNF geni Val66Met polimorfizmi, dikkat ve yürütücü işlevler sağlıklı kontroller ile şizofreni hastaları arasında karşılaştırıldı. Böylece hem şizofreni etiyolojisini hem de bilişsel işlevleri etkileyebilecek genetik faktörler değerlendirildi. Yöntem: BDNF Val66Met gen polimorfizmi 102 şizofreni hastasında ve 98 sağlıklı kontrolde araştırıldı. Bilişsel işlevler Wisconsin Kart Eşleme Testi (WKET) ve Stroop Testi ile değerlendirildi. Bulgular: Hastalar ve sağlıklı kontroller arasında BDNF Val66Met polimorfizminin genotipik veya allel dağılımı açısından fark yoktu. Met aleli olan hastalarda (Val/Met ve Met/Met) anlamlı olarak daha yüksek intihar girişimi yüzdesi bulundu. Met aleli, şizofreni hastalarında odaklanmış dikkat ve yanıt inhibisyonundaki başarısızlıkla ilişkiliydi. Sonuç: Met allelinin varlığı, şizofreni hastalarında intihar girişimi riski ile ilişkili olabilir. Odaklanmış dikkat ve yanıt inhibisyonu gibi yürütücü işlev alanlarındaki bozulma, Met alleli ile ilişkili görünmektedir.
Association of BDNF Gene Val66Met Polymorphism with Suicide Attempts, Focused Attention and Response Inhibition in Patients with Schizophrenia
Introduction: The relationship between BDNF gene Val/Met polymorphism and clinical symptoms, attention and executive functions in patients with schizophrenia was investigated in this study. Also, BDNF Val66Met gene polymorphism was compared between patients and healthy controls. Thus, genetic factors that may affect both the etiology and cognitive function of schizophrenia were evaluated. Methods: BDNF Val66Met gene polymorphism was investigated in 102 patients with schizophrenia and 98 healthy controls. Cognitive functions were evaluated by the Wisconsin Card Sorting Test (WCST) and Stroop Test. Results: There was no difference in terms of the genotypic or allelic distribution of BDNF Val66Met polymorphism between patients and healthy controls. A significantly higher percentage of suicide attempts were found in the patients having Met allele (Val/Met and Met/Met). Met allele was associated with failure in focused attention and response inhibition in patients with schizophrenia. Conclusion: The presence of the Met allele could be associated with the risk of suicide attempts in patients with schizophrenia. Impairment in executive function areas, such as focused attention and response inhibition appears to be related to the Met allele.

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