Finger length ratio in longevity populations.

Objectives: The purpose of this study was to compare the prevalence of finger length ratio between three longevity populations (Abkhazians, Azerbaijanis, and Georgians) and one nonlongevity population (Russians), as well as between a longevity and nonlongevity sample within one ethnic group (Abkhazians).

Methods: In a cross-sectional observational study, we compared the prevalence of finger length ratio in longevity vs nonlongevity samples.

Results: A negative relationship was observed between longevity index and prevalence of type 1 (feminine type) ratio.

Heritability estimation of 2D:4D finger ratio in a Chuvashian population-based sample.

Objectives: The purpose of this study was to evaluate the familial correlations and heritability of 2D:4D ratio traits using a large population-based sample of ethnically homogeneous pedigrees from Chuvasha and Bashkortostan Autonomies of the Russian Federation.

Methods: We calculated the familial correlations and performed a heritability analysis of 2D:4D ratio traits in a sample of 1541 subjects (803 men and 738 women, mean age 47.78 ± 16.

Evaluation of the long-term skeletal effect induced by teratogen 5-aza-2'deoxycytidine on offspring of high (C3H/HeJ) and low (C57BL/6J) bone mass phenotype mice.

The long term skeletal effects of antenatal exposure to teratogen 5-deoxy-2'-cytidine (5-AZA) were studied using two inbred strains, C3H/HeJ (C3H, with inherently stronger bones) and C57Bl/6J (C57, with weaker bones). We previously reported that exposure to 5-AZA resulted in loss of bone quality in 3- and 6-mo-old C3H offspring. In this study, we further examined whether the long-term effects of an acute teratogenic exposure are still evident in older mice.

Finger Length Ratio and Body Composition In Chuvashians.

Very few studies that evaluated the association between fi nger length ratio and body composition in adult population showed very diverse results. We carried out a radiographic study on a large population sample who had participated in a Chuvashian skeletal aging study investigating different aspects of skeletal aging. The aims of this study were to evaluate the association between 2D:4D ratio and various indices of body composition in Chuvashian males and females.

2D:4D finger length ratio and radiographic hand osteoarthritis.

To evaluate the association between the index and ring finger's (2D:4D) length ratio with the prevalence and severity of radiographic hand osteoarthritis (OA). A population-based sample included 802 males (mean age 46.98 ± 17.