title: Correlation of parents' longevity with carotid intima-media thickness in patients attending a Lipid Clinic.
abstract: The relationship between carotid intima-media thickness (IMT) and the subject's parents' longevity has been investigated. The association between parents' age at death and IMT was estimated in 593 consecutive patients attending a Lipid Clinic by survival-analysis methods. Average maximum IMT (Avg-IMT), maximum IMT (Max-IMT), clinical and laboratory variables and parental age at death, were assessed. Kaplan-Meier analyses showed significant differences in survival curves, low IMTs being associated with long-lived parents (p=0.0003 and 0.001 by log-rank test for fathers and mothers, respectively). A Cox proportional hazards regression model showed that higher carotid IMT values were associated with father's and mother's deaths at an early age, even after adjusting for conventional cardiovascular risk factors. These data were confirmed after the stratification of patients into younger (<65 y) and older (>/=65 y) or into subjects with and without a family history of dyslipidemia or vascular diseases. In addition, by stratifying subjects into those with no, one or two long-lived parents, we observed a significant trend for the combination of father's and mother's longevity on their offspring's IMTs (p<0.01 and 0.05 for Avg-IMT and Max-IMT, respectively). These data highlight a significant relationship between carotid artery IMT and a familial predisposition to be long-lived that is independent of the individual's vascular risk profile.
authors.affiliation: Center E. Grossi Paoletti, Department of Pharmacological Sciences, University of Milan, Via Balzaretti 9, 20133 Milan, Italy; Center Cardiologico Monzino, IRCCS, Milan, Italy. damiano.baldassarre@unimi.it
authors.forename: Damiano
authors.initials: D
authors.lastname: Baldassarre
authors.forename: Mauro
authors.initials: M
authors.lastname: Amato
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Veglia
authors.forename: Linda
authors.initials: L
authors.lastname: Pustina
authors.forename: Samuela
authors.initials: S
authors.lastname: Castelnuovo
authors.forename: Silvia
authors.initials: S
authors.lastname: Sanvito
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Gerosa
authors.forename: Cesare R
authors.initials: CR
authors.lastname: Sirtori
authors.forename: Elena
authors.initials: E
authors.lastname: Tremoli
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002339:Carotid Arteries / Q000000981:diagnostic imaging / Q000473:pathology*; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging / Q000401:mortality* / Q000473:pathology*; D005192:Family Health; D005260:Female; D006801:Humans; D008136:Longevity; D008297:Male; D008875:Middle Aged; D010045:Outpatients; D010290:Parents; D016016:Proportional Hazards Models; D012307:Risk Factors; D017539:Tunica Intima / Q000000981:diagnostic imaging / Q000473:pathology; D017540:Tunica Media / Q000000981:diagnostic imaging / Q000473:pathology; D014463:Ultrasonography