Opposite associations of trunk and leg fat depots with plasma ferritin levels in middle-aged and older Chinese men and women.
BACKGROUND
Few data have been published on the associations of ferritin with trunk and leg fat depots. We aimed to investigate these associations in a Chinese population.


METHODS
Trunk fat mass and leg fat mass were determined in a cross-sectional sample of 1,150 Chinese (479 men and 671 women) aged 50-70 years by dual-energy X-ray absorptiometry scan. Fasting plasma ferritin was measured.


RESULTS
Plasma ferritin was positively correlated with waist circumference, waist-to-hip ratio, total body fat and trunk fat mass, but inversely correlated with leg fat mass in men (r = 0.16, 0.26, 0.19, 0.22 and -0.12, respectively, all P<0.05) and women (r = 0.16, 0.16, 0.08, 0.17 and -0.12, respectively, all P<0.05). Multivariate regression analysis showed that ferritin levels increased with larger trunk fat mass (β = 0.33 ± 0.08 for men and β = 0.21 ± 0.05 for women, both P<0.001) while decreased with larger leg fat mass (β = -0.12 ± 0.09, P = 0.15 for men; and β = -0.14 ± 0.05, P = 0.005 for women). Moreover, plasma ferritin levels decreased with increasing tertile of leg fat mass among each tertile of trunk fat mass.


CONCLUSIONS
This is the first study to report the opposite associations of trunk and leg fat depots with plasma ferritin levels.
Wu
Hongyu
H
Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Chinese Academy of Sciences and Graduate School of the Chinese Academy of Sciences, Shanghai, China.
Qi
Qibin
Q
Yu
Zhijie
Z
Sun
Liang
L
Li
Huaixing
H
Lin
Xu
X
D000005:Abdomen; D000273:Adipose Tissue; D000368:Aged; D005260:Female; D005293:Ferritins / Q000097:blood*; D006801:Humans; D007866:Leg; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis
D005293:Ferritins