Araştırma Makalesi

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

Cilt: 47 Sayı: 3 30 Eylül 2022
PDF İndir
TR EN

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

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

Kaynakça

  1. Reichenberg A, Weiser M, Rapp MA, Rabinowitz J, Caspi A, Schmeidler J, et al. Elaboration on premorbid intellectual performance in schizophrenia: Premorbid intellectual decline and risk for schizophrenia. Arch Gen Psychiatry. 2005;62(12): 1297-304.
  2. Santesteban-Echarri O, Paino M, Rice S, González-Blanch C, McGorry P, Gleeson J, et al. Predictors of functional recovery in first-episode psychosis: A systematic review and meta-analysis of longitudinal studies. Clinical Psychology Review. 2017; 58: 59-75.
  3. Ortiga-Carvalho TM, Chiamolera MI, Pazos-Moura CC, Wondisford FE. Hypothalamus-pituitary-thyroid axis. Compr Physiol. 2016;6(3): 1387-428.
  4. Leonard JL. Non-genomic actions of thyroid hormone in brain development. Steroids. 2008;73: 1008-12.
  5. Bégin ME, Langlois MF, Lorrain D, Cunnane SC. Thyroid Function and Cognition during Aging. Curr Gerontol Geriatr Res. 2008;2008.
  6. Osterweil D, Syndulko K, Cohen SN, Pettier‐Jennings PD, Hershman JM, Cummings JL, et al. Cognitive Function in Non‐Demented Older Adults with Hypothyroidism. J Am Geriatr Soc. 1992;40(4): 325-35.
  7. Monzanil F, Del Guerra P, Caracciol N, Pruneti CA, Puccil E, Luisit M, et al. Subclinical hypothyroidism: neurobehavioral features and beneficial effect of l-thyroxine treatment. Clin Investig. 1993;71(5): 367-71.
  8. Zhu DF, Wang ZX, Zhang DR, Pan ZL, He S, Hu XP, et al. fMRI revealed neural substrate for reversible working memory dysfunction in subclinical hypothyroidism. Brain. 2006;129(11): 2923-30.
  9. Samuels MH. Thyroid disease and cognition. Endocrinology and Metabolism Clinics of North America. 2014;43(2):529-43.
  10. Wahlin Å, Bunce D, Wahlin TBR. Longitudinal evidence of the impact of normal thyroid stimulating hormone variations on cognitive functioning in very old age. Psychoneuroendocrinology. 2005;30(7):625-37.

Kaynak Göster

MLA
Kaya, Hatice, ve Batuhan Ayık. “Effects of TSH, fT3 and fT4 levels on neurocognitive symptoms in patients with schizophrenia”. Cukurova Medical Journal, c. 47, sy 3, Eylül 2022, ss. 1263-72, doi:10.17826/cumj.1135374.