Neurological abnormalities among offspring of persons with schizophrenia: Relation to premorbid psychopathology

SCHIZOPHRENIA RESEARCH

卷:108

Article

Prasad, Konasale M.¹  Sanders, Richard²  Sweeney, John³  Montrose, Debra¹  Diwadkar, Vaibhav^1,4  Dworakowski, Diana¹  Miewald, Jean¹  Keshavan, Matcheri^1,4,5 

[1] Univ Pittsburgh, Sch Med, Pittsburgh, PA 15260 USA

[2] Dayton VA & Wright State Univ, Dayton, OH USA

[3] Univ Illinois, Chicago, IL USA

[4] Wayne State Univ, Sch Med, Detroit, MI USA

[5] Harvard Univ, Sch Med, Boston, MA USA

关键词: Schizophrenia;    Psychotic disorders;    High risk;    Neurological examination abnormalities;    Neurological soft signs;    Schizotypy;    Cognitive functions;    Neuropsychology;    Endophenotype;   

DOI  :  10.1016/j.schres.2008.11.019

来源: Elsevier

【 摘 要 】

Background: Neurological Examination Abnormalities (NEA, often called neurological soft signs) have been observed in early schizophrenia and may be heritable. We investigated the prevalence, and neurocognitive and psychopathological correlates of NEA among offspring of schizophrenia patients who are at increased genetic risk for this illness. Methods: Neurological examinations were conducted an high risk (HR, n=74) and healthy comparison subjects (HS, n=86), using the Heinrichs-Buchanan scale. Cognitive-perceptual (CogPer) and repetitive motor (RepMot) subscores, and total NEA scores were computed. All HR and HS were assessed using K-SADS/SCID for diagnoses. Schizotypy was measured using the Magical Ideation and the Perceptual Aberration subscales (Chapman scale), attention using Continuous Performance Test (CPT-IP) and executive functions using the Wisconsin Card Sorting Test (WCST). Results: CogPer (F(1,160)=7.14, p=0.008) but not RepMot NEA scores were higher in HR subjects compared to HS after controlling for age and sex. CogPer NEA scores were higher in HR subjects with axis I psychopathology compared to those without (F(2,170)-6.41, p=0.002). HR subjects had higher schizotypy scores (composite of the magical ideation and perceptual aberration scales) (F(1,141)=23.25, p=0.000004). Schizotypy scores were negatively correlated with sustained attention and executive functions. In addition, schizotypy was positively correlated with CogPer NEA scores. Conclusions: Young relatives at increased genetic risk for schizophrenia show more frequent NEA. CogPer but not RepMot NEA scores were elevated, consistent with our prior observation of CogPer NEA being relatively specific for schizophrenia. The observed relationships between NEA, cognitive impairments, schizorypy and axis I disorders suggest that NEA may characterize a subgroup of HR offspring at an elevated risk for psychopathology. (C) 2008 Elsevier B.V. All rights reserved.

【 授权许可】

Free