Cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families

Zhikun Zhang,1 Rong Zhang,2 Peng Qin,3 Liwen Tan4 1Mental Health Center, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; 2Department of Psychiatry, Staff Hospital of Zhongyuan Oil Field Company, Puyang, Henan, China; 3Department of Psychiatry, Changde Rehabili...

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Autores principales:	Zhang Z, Zhang R, Qin P, Tan L
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	Schizophrenia first-degree relatives cognitive function negative symptoms genetic load Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
Acceso en línea:	https://doaj.org/article/0456eef84deb40149443b6b06caf0578
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spelling	oai:doaj.org-article:0456eef84deb40149443b6b06caf05782021-12-02T07:58:21ZCognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families1178-2021https://doaj.org/article/0456eef84deb40149443b6b06caf05782018-12-01T00:00:00Zhttps://www.dovepress.com/cognitive-dysfunction-and-negative-symptoms-in-patients-with-schizophr-peer-reviewed-article-NDThttps://doaj.org/toc/1178-2021Zhikun Zhang,1 Rong Zhang,2 Peng Qin,3 Liwen Tan4 1Mental Health Center, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; 2Department of Psychiatry, Staff Hospital of Zhongyuan Oil Field Company, Puyang, Henan, China; 3Department of Psychiatry, Changde Rehabilitation Hospital, Changde, Hunan, China; 4Department of Psychiatry, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China Purpose: This study aimed to investigate cognitive functioning, negative symptoms, and the relationships in schizophrenia (SP) pedigrees and to explore the effect of genetic loading on those endophenotypes.Patients and methods: Forty-four patients with SP, 81 first-degree non-psychotic relatives of patients from simplex and multiplex families, 14 matched control probands, and 29 first-degree relatives of the patients from communities were assessed by the vocabulary subtest (VS) of Wechsler Adult Intelligence Scale, memory span subtests of the Multiple Memory Assessment Scale (MMAS), Wisconsin Card Sorting Test (WCST), Continuous Performance Test (CPT), and Negative Scale of Positive and Negative Syndrome Scale.Results: Compared with controls, patients with SP and their relatives had worse performances in WCST and CPT, and more serious negative symptoms. Patients from multiple families performed poorly on most tests while patients from simplex families had impairments only on the parameters of CPT and WSCT as compared to control probands. Patients from multiple families differed significantly from the patients from simplex families in the digit span and word span of MMAS. After controlling for education, in comparison with relatives of control probands, relatives from multiple families showed impairments in VS, multiple domains of CPT, whereas relatives from simplex families had lower scores on the VS and more total cards and random errors in WSCT. The performances of most tests were linked to negative symptoms in patients with SP. For patients with SP, VS, correct numbers and categories in the WCST, and visual and acoustic errors in the CPT predicted 68.8% of the variability in negative symptoms.Conclusion: Our findings support that cognitive deficits and negative symptoms may be markers of hereditary susceptibility of SP and aggravate as the degree of genetic load increases. There are certain relationships between cognitive deficits and negative symptoms in patients with SP. Keywords: schizophrenia, first-degree relatives, cognitive function, negative symptoms, genetic loadZhang ZZhang RQin PTan LDove Medical PressarticleSchizophreniafirst-degree relativescognitive functionnegative symptomsgenetic loadNeurosciences. Biological psychiatry. NeuropsychiatryRC321-571Neurology. Diseases of the nervous systemRC346-429ENNeuropsychiatric Disease and Treatment, Vol Volume 14, Pp 3339-3348 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Schizophrenia first-degree relatives cognitive function negative symptoms genetic load Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
spellingShingle	Schizophrenia first-degree relatives cognitive function negative symptoms genetic load Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429 Zhang Z Zhang R Qin P Tan L Cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families
description	Zhikun Zhang,1 Rong Zhang,2 Peng Qin,3 Liwen Tan4 1Mental Health Center, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; 2Department of Psychiatry, Staff Hospital of Zhongyuan Oil Field Company, Puyang, Henan, China; 3Department of Psychiatry, Changde Rehabilitation Hospital, Changde, Hunan, China; 4Department of Psychiatry, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China Purpose: This study aimed to investigate cognitive functioning, negative symptoms, and the relationships in schizophrenia (SP) pedigrees and to explore the effect of genetic loading on those endophenotypes.Patients and methods: Forty-four patients with SP, 81 first-degree non-psychotic relatives of patients from simplex and multiplex families, 14 matched control probands, and 29 first-degree relatives of the patients from communities were assessed by the vocabulary subtest (VS) of Wechsler Adult Intelligence Scale, memory span subtests of the Multiple Memory Assessment Scale (MMAS), Wisconsin Card Sorting Test (WCST), Continuous Performance Test (CPT), and Negative Scale of Positive and Negative Syndrome Scale.Results: Compared with controls, patients with SP and their relatives had worse performances in WCST and CPT, and more serious negative symptoms. Patients from multiple families performed poorly on most tests while patients from simplex families had impairments only on the parameters of CPT and WSCT as compared to control probands. Patients from multiple families differed significantly from the patients from simplex families in the digit span and word span of MMAS. After controlling for education, in comparison with relatives of control probands, relatives from multiple families showed impairments in VS, multiple domains of CPT, whereas relatives from simplex families had lower scores on the VS and more total cards and random errors in WSCT. The performances of most tests were linked to negative symptoms in patients with SP. For patients with SP, VS, correct numbers and categories in the WCST, and visual and acoustic errors in the CPT predicted 68.8% of the variability in negative symptoms.Conclusion: Our findings support that cognitive deficits and negative symptoms may be markers of hereditary susceptibility of SP and aggravate as the degree of genetic load increases. There are certain relationships between cognitive deficits and negative symptoms in patients with SP. Keywords: schizophrenia, first-degree relatives, cognitive function, negative symptoms, genetic load
format	article
author	Zhang Z Zhang R Qin P Tan L
author_facet	Zhang Z Zhang R Qin P Tan L
author_sort	Zhang Z
title	Cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families
title_short	Cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families
title_full	Cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families
title_fullStr	Cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families
title_full_unstemmed	Cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families
title_sort	cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/0456eef84deb40149443b6b06caf0578
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Cognitive dysfunction and negative symptoms in patients with schizophrenia and their first-degree relatives from simplex and multiplex families

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