BDNF, GDNF, NGF and Klotho levels and neurocognitive functions in acute term of schizophrenia

Abstract Background Klotho and its relationship with neurotrophic factors and cognition in schizophrenia has not yet been investigated. In this study, the hypothesis that the blood serum levels of BDNF, GDNF, NGF and Klotho in schizophrenia patients and healthy controls would be related to cognitive...

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Main Authors: Betul Aslan Turkmen, Esra Yazici, Derya Guzel Erdogan, Mehmet Akif Suda, Ahmet Bulent Yazici
Format: Article
Language:English
Published: BMC 2021-11-01
Series:BMC Psychiatry
Subjects:
Online Access:https://doi.org/10.1186/s12888-021-03578-4
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author Betul Aslan Turkmen
Esra Yazici
Derya Guzel Erdogan
Mehmet Akif Suda
Ahmet Bulent Yazici
author_facet Betul Aslan Turkmen
Esra Yazici
Derya Guzel Erdogan
Mehmet Akif Suda
Ahmet Bulent Yazici
author_sort Betul Aslan Turkmen
collection DOAJ
description Abstract Background Klotho and its relationship with neurotrophic factors and cognition in schizophrenia has not yet been investigated. In this study, the hypothesis that the blood serum levels of BDNF, GDNF, NGF and Klotho in schizophrenia patients and healthy controls would be related to cognitive functions was investigated. Methods In this study, two groups were assessed: schizophrenia patients (case group) who were hospitalised in the Psychiatry Clinic of Sakarya University Training and Research Hospital and healthy volunteers (control group). The patients were evaluated on the 1st and 20th days of their hospitalisation with the Positive and Negative Syndrome Scale (PANSS), the Brief Psychiatric Rating Scale (BPRS), the General Assessment of Functioning Scale (GAF) and the Clinical Global Impression Scale (CGI). For cognitive assessment, both groups were evaluated with the Wechsler Memory Scale-Visual Production Subtest (Wechsler Memory Scale III-Visual Reproduction Subtest) and the Stroop test. Results BDNF, GDNF, NGF and Klotho levels were lower in schizophrenia patients than in healthy controls. In the schizophrenia patients, on the 20th day of treatment, there was a statistically significant increase in BDNF compared to the 1st day of treatment. BDNF, GDNF and Klotho showed positive correlations with some cognitive functions in the healthy controls. BDNF, GDNF, NGF and Klotho levels were intercorrelated and predictive of each other in both groups. Conclusion This study suggests a relationship between cognitive functions, neurotrophic factors and Klotho. Most of the results are the first of their kind in the extant literature, while other results are either similar to or divergent from those generated in previous studies. Therefore, new, enhanced studies are needed to clarify the role of Klotho and neurotrophic factors in schizophrenia.
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spelling doaj.art-a631d0d1f50146a087e7eeda83b3edfe2022-12-21T23:09:30ZengBMCBMC Psychiatry1471-244X2021-11-0121111210.1186/s12888-021-03578-4BDNF, GDNF, NGF and Klotho levels and neurocognitive functions in acute term of schizophreniaBetul Aslan Turkmen0Esra Yazici1Derya Guzel Erdogan2Mehmet Akif Suda3Ahmet Bulent Yazici4Department of Psychiatry, Sakarya Training and Research HospitalDepartment of Psychiatry, Sakarya University, Medical FacultyDepartment of Physiology, Sakarya University, Medical FacultyDepartment of Psychiatry, Sakarya Training and Research HospitalDepartment of Psychiatry, Sakarya University, Medical FacultyAbstract Background Klotho and its relationship with neurotrophic factors and cognition in schizophrenia has not yet been investigated. In this study, the hypothesis that the blood serum levels of BDNF, GDNF, NGF and Klotho in schizophrenia patients and healthy controls would be related to cognitive functions was investigated. Methods In this study, two groups were assessed: schizophrenia patients (case group) who were hospitalised in the Psychiatry Clinic of Sakarya University Training and Research Hospital and healthy volunteers (control group). The patients were evaluated on the 1st and 20th days of their hospitalisation with the Positive and Negative Syndrome Scale (PANSS), the Brief Psychiatric Rating Scale (BPRS), the General Assessment of Functioning Scale (GAF) and the Clinical Global Impression Scale (CGI). For cognitive assessment, both groups were evaluated with the Wechsler Memory Scale-Visual Production Subtest (Wechsler Memory Scale III-Visual Reproduction Subtest) and the Stroop test. Results BDNF, GDNF, NGF and Klotho levels were lower in schizophrenia patients than in healthy controls. In the schizophrenia patients, on the 20th day of treatment, there was a statistically significant increase in BDNF compared to the 1st day of treatment. BDNF, GDNF and Klotho showed positive correlations with some cognitive functions in the healthy controls. BDNF, GDNF, NGF and Klotho levels were intercorrelated and predictive of each other in both groups. Conclusion This study suggests a relationship between cognitive functions, neurotrophic factors and Klotho. Most of the results are the first of their kind in the extant literature, while other results are either similar to or divergent from those generated in previous studies. Therefore, new, enhanced studies are needed to clarify the role of Klotho and neurotrophic factors in schizophrenia.https://doi.org/10.1186/s12888-021-03578-4KlothoNeurodegenerationCognitive functionsNeurotrophic factorsSchizophrenia
spellingShingle Betul Aslan Turkmen
Esra Yazici
Derya Guzel Erdogan
Mehmet Akif Suda
Ahmet Bulent Yazici
BDNF, GDNF, NGF and Klotho levels and neurocognitive functions in acute term of schizophrenia
BMC Psychiatry
Klotho
Neurodegeneration
Cognitive functions
Neurotrophic factors
Schizophrenia
title BDNF, GDNF, NGF and Klotho levels and neurocognitive functions in acute term of schizophrenia
title_full BDNF, GDNF, NGF and Klotho levels and neurocognitive functions in acute term of schizophrenia
title_fullStr BDNF, GDNF, NGF and Klotho levels and neurocognitive functions in acute term of schizophrenia
title_full_unstemmed BDNF, GDNF, NGF and Klotho levels and neurocognitive functions in acute term of schizophrenia
title_short BDNF, GDNF, NGF and Klotho levels and neurocognitive functions in acute term of schizophrenia
title_sort bdnf gdnf ngf and klotho levels and neurocognitive functions in acute term of schizophrenia
topic Klotho
Neurodegeneration
Cognitive functions
Neurotrophic factors
Schizophrenia
url https://doi.org/10.1186/s12888-021-03578-4
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