Related Experiment Video
Updated: Jun 1, 2026
07:38
Strategies for Assessing Autistic-Like Behaviors in Mice
Published on: September 20, 2024
Comparative immunogenetics of autism and schizophrenia
1Department of Biosciences, Simon Fraser University, Burnaby, BC, Canada. crespi@sfu.ca
Genes, Brain, and Behavior
|June 9, 2011
Summary
Genetic factors at the HLA DRB1 locus influence autism, schizophrenia, and rheumatoid arthritis. Specific alleles show varied risk and protection, suggesting shared neuroimmune pathways in these neurodevelopmental and autoimmune disorders.
Area of Science:
- Neuroscience
- Genetics
- Immunology
Background:
- Autism and schizophrenia are heritable neurodevelopmental disorders with complex risk factors.
- Comorbidity with other conditions, like rheumatoid arthritis, offers etiological insights.
- Rheumatoid arthritis genetics implicate the HLA DRB1 locus, with specific alleles influencing risk.
Purpose of the Study:
- To test if HLA DRB1 allelic variation pleiotropically modulates risk for rheumatoid arthritis, autism, and schizophrenia.
- To investigate shared genetic underpinnings between these neurodevelopmental and autoimmune conditions.
Main Methods:
- Systematic literature review of reported associations between DRB1 variants and rheumatoid arthritis, autism, and schizophrenia.
- Analysis of epidemiological data on comorbidity and familial aggregation.
Main Results:
- DRB1*04 alleles are associated with increased risk of rheumatoid arthritis and autism, but decreased risk of schizophrenia.
- DRB1*13 alleles are linked to protection from rheumatoid arthritis and autism, but increased risk of schizophrenia.
- Findings support a pleiotropic model for DRB1 variants across these conditions.
Conclusions:
- Convergent genetic and epidemiological data suggest shared neuroimmune alterations in a subset of autism and schizophrenia cases.
- Understanding DRB1 variant effects may reveal novel therapeutic targets for these disorders.
Related Concept Videos
01:29Biological Causes of Schizophrenia
Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin studies.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin studies.
01:27Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
01:23Behavioral Genetics and Its Designs
Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
01:29Psychological and Sociocultural Causes of Schizophrenia
Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
01:19Autism Spectrum Disorder
Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
01:11Genome-wide Association Studies-GWAS
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...