Insulin-like growth factors in pygmies. The role of puberty in determining final stature.
Insulin-like growth factors in pygmies. The role of puberty in determining final stature.
复制标题
俾格米人的胰岛素样生长因子。
DOI:
10.1056/nejm198704093161503
复制
发表时间:
1987
期刊:
影响因子:
--
通讯作者:
Cavalli-Sforza,LL
中科院分区:
文献类型:
--
作者:
Merimee,TJ;Zapf,J;Hewlett,B;Cavalli-Sforza,LL
We measured the serum concentrations of insulin-like growth factors (IGF) I and II and testosterone in pygmy children, adolescents, and adults, as well as in controls, to determine more precisely the role of these factors in controlling growth. We had previously shown that growth hormone levels were normal in pygmies. Prepubertal pygmy children and controls did not differ in linear growth or in serum concentrations of IGF I and II. In pygmy adolescent boys, the mean (±SEM) serum concentration of IGF I was only one third that in control adolescents, who were similar to the pygmies in age and Tanner stage of development (154±22 vs. 435±37 ng per milliliter; P<0.01). A similar difference in IGF I concentration was observed in girls (278±18 vs. 570±25 ng per milliliter; P<0.01). IGF II and testosterone levels were normal in all groups. There was a significant difference in growth between controls and pygmies only during puberty. There was a marked acceleration of growth in the controls during adolescence, but such an acceleration was absent or blunted in the pygmies.These findings suggest that the short stature of adult pygmies is due primarily to a failure of growth to accelerate during puberty. We postulate that IGF I is the principal factor responsible for normal pubertal growth and that testosterone does not accelerate growth appreciably in the absence of an increase in the level of IGF I. (N Engl J Med 1987;316:906–11.)
登录
查看更多内容
影响因子:
5.8
作者:
Kenneth C. Copeland;L. E. Underwood;J. J. Wyk
通讯作者:
J. J. Wyk
DOI:
--
发表时间:
1978
期刊:
Metabolism: Clinical and Experimental
影响因子:
--
作者:
J. Zapf;E. Rinderknecht;R. Humbel;E. Froesch
通讯作者:
E. Froesch
DOI:
10.1210/jcem-53-1-100
发表时间:
1981
期刊:
The Journal of clinical endocrinology and metabolism
影响因子:
--
作者:
Hintz,RL;Liu,F;Rosenfeld,RG;Kemp,SF
通讯作者:
Kemp,SF
影响因子:
--
作者:
H. Meredith
通讯作者:
H. Meredith
影响因子:
3.3
作者:
W. A. Daniel;A. Aynsley;M. Zachmann;A. Prader
通讯作者:
A. Prader