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Concomitant myocardial infarction in identical twins with similar coronary lesions
P Russo1, G Steffenino, A Dellavalle
1Divisione di Cardiologia, Ospedale Civico di Chivasso.
Insights
Identical twins showed different coronary dominance patterns but similar lesion locations, suggesting local genetic factors influence coronary artery disease development at specific sites.
Area of Science:
- Cardiovascular Medicine
- Genetics
- Atherosclerosis Research
Background:
- Investigating the genetic and environmental influences on coronary artery disease (CAD) is crucial for understanding its pathogenesis.
- Twin studies offer a unique model to disentangle genetic predispositions from lifestyle factors in complex diseases.
Observation:
- Two 42-year-old identical male twins underwent coronary angiography within a 3-month period.
- While gross similarities in coronary anatomy were noted, their coronary dominance patterns differed.
- Coronary lesions, however, were observed at remarkably similar anatomical locations in both twins.
Findings:
- The differing coronary dominance patterns despite genetic identity suggest that factors beyond major genetic inheritance influence coronary anatomy.
- The concordance of lesion sites implies that localized, genetically determined factors may predispose specific coronary segments to atheromatous plaque formation.
- Potential localized factors include rheologic profiles within specific coronary tree sections and regional susceptibility to lipid deposition.
Implications:
- These findings highlight the complex interplay between genetics and localized vascular environment in the development of coronary atherosclerosis.
- Understanding these site-specific genetic susceptibilities could lead to more personalized risk assessment and targeted prevention strategies for CAD.
- Further research into the genetic regulation of local coronary vascular properties is warranted to elucidate atherogenesis mechanisms.
Abstract:
Two 42-year-old male twins were referred to our hospital for coronary angiography within 3 months. Despite some gross similarities in the aspect of the coronary tree, the coronary dominance pattern was not the same in these twins, but coronary lesions involved almost the same sites. Genetically determined local factors, such as the rheologic profile in some sections of the coronary tree, or the susceptibility to lipid deposition in some spots, may be important in the development of atheromatous lesions in special sites.