Discordance and concordance of dementia of the Alzheimer type (DAT) in monozygotic twins indicate heritable and sporadic forms of Alzheimer's disease.
case_control · Level III
Where this comes from
- Record sourced from PubMed, PMID 1922794.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Monozygotic (MZ) twin pairs concordant for dementia of the Alzheimer type (DAT) or for proven Alzheimer's disease (AD) have a significantly higher frequency of a positive family history (DAT or AD in at least one first-degree relative, p less than 0.002) than do discordant MZ twin pairs, consistent with a lesser predicted distribution of proportions of surviving first-degree relatives without DAT (or AD) (p less than 0.001). The results suggest that concordant MZ twin pairs with DAT (or AD) have a heritable form of disease. AD in discordant twins may result from environmental influences or from a somatic chromosomal change following zygotic division.
Medical subject headings
- Alzheimer Disease
- Diseases in Twins
- Twins, Monozygotic