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Yıl:2018; Cilt: 55; Sayı: 4>> Özet
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Nöropsikiyatri Arşivi; 2018;55(4):370-375
Obsesif Kompulsif Bozukluk Hastaları ve Onların Akrabalarında Durumsal Farkındalık: Bir Endofenotip Çalışması
D Tezcan, S Tümkaya
Pamukkale Üniversitesi,Denizli
Amaç: Endofenotip modellerinin obsesif-kompulsif bozukluk (OKB) gibi heterojen beyin hastalıklarının etiyolojilerinin anlaşılmasına yardımcı olacağı düşünülmektedir. Bu çalışmada, kısmen naturalistik işleyen bellek bozuklukları olarak tanımlanabilecek “durumsal farkındalık” bozukluklarının OKB için bir endefenotip olup olmadığının belirlenmesi amaçlanmıştır. Yöntem: Bu çalışmada, OKB’de endofenotip araştırmak için, 67 OKB hastası, onların hastalıktan etkilenmemiş 50 birinci derece akrabası ve bu gruplarla yaş, cinsiyet ve eğitim seviyesi açısından eşleştirilmiş 41 kontrolün durumsal farkındalıkları (DF) ölçülmüştür. Bunun için bir görsel-uzaysal işleyen bellek testi kullanılmıştır. Bulgular: Sonuç olarak, hem DF1 hem de DF2 görevlerinde akrabalar OKB’ler ve kontroller arasında bir performans gösterdiler. OKB’li hastalar DF1 tekli ve çift görevlerde kontrollerden anlamlı olarak daha kötüydüler. Diğer taraftan hiçbir DF hesaplamasında OKB’ler ve akrabalar arasında anlamlı farklılık yoktu. Sonuç: Bu sonuçlar kötü durumsal farkındalığın OKB için aday bir endofenotip olabileceğini göstermektedir. DF1 de kötü performans gibi erken algısal bozukluklar OKB için genetik riske aracılık edebilir.
Situation Awareness in Obsessive Compulsive Disorder and Their Relatives: an Endophenotype Study
Introduction: It has been theorized that endophenotype models will help to understand the etiology of heterogeneous brain disorders such as obsessive-compulsive disorder (OCD). In this study, it was aimed to determine whether “situational awareness” impairments which can be defined as partially naturalistic working memory deficits, are an endofenotype for OCD. Methods: In this study, situational awareness (SA) task performances of 67 OCD patients, 50 their unaffected first-degree relatives, and 41 healthy controls who matched with regard to sex, age and years of education were measured to investigate endophenotypes in OCD. For this purpose, a visuospatial working memory test was used. Results: As a result, the relatives showed a task performance between patients with OCD and control group in both SA1 and SA2 tasks. Patients with OCD performed significantly worse than control group on SA1 single and dual task. On the other hand, there were no significant differences between relatives and patients of any SA assessment. Conclusion: These results indicated that poor situational awareness may be a candidate endophenotype for OCD. Early perceptual dysfunctions such as poor performance on SA1 task can mediate the genetic risk for OCD.

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