Effects of TSH, fT3 and fT4 levels on neurocognitive symptoms in patients with schizophrenia

Year 2022, Volume: 47 Issue: 3, 1263 - 1272, 30.09.2022

Hatice Kaya , Batuhan Ayık

https://doi.org/10.17826/cumj.1135374

Cited By: 1

Abstract

Purpose: The aim of this study is to examine the relationship between thyroid hormone levels and positive, negative, general, and cognitive symptoms in euthyroid patients with psychosis.
Materials and Methods: Thirty-three schizophrenia patients were included in this cross-sectional study. Sociodemographic and clinical data of the participants, positive and negative symptoms assessment scale (PANSS), general assessment of functionality scale (GAF), and clinical global impression scale (CGI) scores were recorded. The relationships between TSH, fT3, and fT4 levels and cognitive performances of patients which is measured via a neurocognitive battery consisting of Trail Making Test (TMT) A, TMT B, verbal fluency test (VFT), digit span (DS), forward and backward, and Wisconsin Card Sorting Test (WCST) were investigated.
Results: Significant correlations were found between fT3 levels and WCST performances. fT3 levels was significantly correlated with the number of categories achieved in WCST (r=.508; p=0.003). A significant correlation was found between fT4 levels and TMT B (r=-.376; p=0.031) and VFT (p=.355; p=0.043) performances. In the linear regression model, it was found that fT3 levels significantly predicted the number of categories achieved in WCST (UB=1.680; p=0.029).
Conclusion: The results of our study suggested that fT3 has more significant effects, primarily on executive functions, compared to T4.

Keywords

thyroid hormones, schizophrenia, cognitive dysfunction

Thanks

none

Şizofreni hastalarında TSH, fT3 ve fT4 düzeylerinin nörobilişsel belirtiler üzerine etkisi

Abstract

Amaç: Bu çalışmamızda ötiroid psikoz hastalarında tiroid hormon düzeyleri ile pozitif, negatif, genel ve bilişsel belirtiler arasındaki ilişkiyi incelemeyi amaçladık.
Gereç ve Yöntem: Çalışmaya 33 şizofreni hastası dahil edildi. Katılımcıların sosyodemografik ve klinik verileri, Pozitif ve Negatif Belirtileri Değerlendirme Ölçeği (PANSS), İşlevselliğin Genel Değerlendirilmesi Ölçeği (IGD), Klinik Global İzlenim Ölçeği (KGI) skorları kaydedildi. İz sürme, Sözel Akıcılık Testi, İleri ve Geri Sayı Menzili ile Wisconsin Kart Sayma Testinden (WKST) oluşan bir nörobilişsel batarya uygulanan hastaların bilişsel performanslarının TSH, sT3 ve sT4 düzeyleri ile ilişkisi araştırıldı.
Bulgular: sT4 düzeyleri ile İz Sürme B (r=-,376; p=0,031) ve Sözel Akıcılık test (p=,355; p=0,043) performansları arasında anlamlı derecede ilişki saptandı. Linear regresyon modelinde sT3 düzeylerinin WKST- tamamlanan kategori sayısını (UB=1.680; p=0.029) anlamlı derecede yordadığı saptandı..
Sonuç: Çalışmamızın sonuçları sT3 ün özellikle yürütücü işlevler üzerinde sT4’e kıyasla daha belirleyici etkileri olduğunu düşündürmüştür. İleride yapılacak daha geniş katılımlı araştırmalar, bilişsel belirtilerin tedavisinde tiroid hormon replasmanının etkinliğini belirlemek açısından önemli görünmektedir.

Keywords

tiroid hormonları, şizofreni, bilişsel disfonksiyon

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