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Query: UMLS:C0004352 (autism)
 32,579 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Autism is a heterogeneous disorder for which we have evidence of both genetic and environmental determination. The genealogies of 16 autistic probands born in Saguenay Lac-Saint Jean were reconstructed and compared to those of 48 matched control individuals distributed in three different groups. The mean inbreeding and kinship coefficients were calculated. Both coefficients were not found to be increased in the autistic group compared to the control groups. These findings support the conclusions reached by Jorde et al. (1990) which indicated that a single gene was unlikely to account for most cases of autism.
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PMID:Genetic analysis of genealogies in mentally retarded autistic probands from Saguenay Lac-Saint-Jean (Quebec, Canada). 929 44

Ability of people to communicate with each other is a necessary component of social behavior and normal development of individuals living in community. A pronounced impairment in communication may be the result of autism which is characterized by impaired socialization, low communication and restricted and/or repetitive behaviors. It is hypothesized that genes or rare mutations play a key role in the development of autism. However a multifold increase of the cases with autistic spectrum symptoms over the last years cannot be attributed exclusively to genetic mutations or heredity. Environmental contribution to the development of autistic symptoms has to be considered. The paper aimed to analyze the social behaviors of CBA/Lac mice with repeated experience of aggression or social defeats in daily agonistic interactions with accent on searches of associations with autistic symptoms in comparison with previously studied C57BL/6J animals. It has been shown that male mice of both strains with alternative social behaviors demonstrated the changes in social behaviors; however the expression of some form of behaviors was different. The data obtained to assert that long-term hostile social environment lead to development of disturbances in social behaviors, accompanying by autistic-like symptoms.
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PMID:[Alteration of Social Behaviors in Male Mice of CBA/Lac Strain under Agonistic Interactions]. 2660 7