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2016 ; 5
(1
): 155-8
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Serum Levels of Growth Differentiation Factor 11 Are Independently Associated
with Low Hemoglobin Values in Hemodialysis Patients
#MMPMID27298756
Yamagishi S
; Matsui T
; Kurokawa Y
; Fukami K
Biores Open Access
2016[]; 5
(1
): 155-8
PMID27298756
show ga
Circulating levels of growth differentiation factor 11 (GDF11) have been shown to
decrease with age in several mammalian species, and supplementation of GDF11 by
heterochronic parabiosis or systemic administration reverses age-related organ
damage. However, there is some controversy about the pathophysiological role of
GDF11 in aging-associated organ damage. Since aging process is accelerated in
uremia, we compared serum levels of GDF11 in hemodialysis (HD) patients with
those in age-matched healthy controls, and then determined the independent
clinical correlates of GDF11 in HD subjects. Sixty-two maintenance HD patients
(34 male and 28 female; mean age, 52.6 years; mean duration of HD, 7.7 months)
were enrolled in the present study. Twenty-nine age-matched subjects were used as
a control. GDF11 was measured by a commercially available enzyme-linked
immunosorbent assay kit. Serum GDF11 levels in HD patients were significantly
higher than those in controls (9.4?±?5.1?pg/mL vs. 7.3?±?5.9?pg/mL). A
statistical significance was demonstrated between GDF11 and hemoglobin
(inversely). Multiple stepwise regression analysis revealed that hemoglobin
(p?0.001) was a sole independent correlate of GDF11 levels in HD patients (R
(2)?=?0.168). Our present study suggests that kinetics and regulation of
circulating GDF11 may differ between normal physiological aging process and
accelerated pathological aging conditions, such as uremia. Given that GDF11 has
been shown to inhibit erythroid maturation in mice, elevation of GDF11 levels may
be involved in erythropoietin-resistant anemia in HD patients.