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English Abstract
Journal Article
Research Support, Non-U.S. Gov't
[Relationship of plasma ghrelin and adenohypophyseal hormone levels in female precocious puberty].
Zhejiang da Xue Xue Bao. Yi Xue Ban = Journal of Zhejiang University. Medical Sciences 2008 September
OBJECTIVE: To investigate the relationship of plasma ghrelin and adenohypophyseal hormone levels in female precocious puberty.
METHODS: A total of 84 patients aged from 6 to 9 years were enrolled in this study. They were divided into idiopathic central precocious puberty (ICPP) and premature thelarche(PT)groups according to their secondary sexual characteristics, bone age, volumes of uterus and ovary, and results of GnRH test. Plasma ghrelin levels were measured by radioimmunoassay. ACTH, TSH, PRL, GH, LH and FSH were measured by chemoluminescence technique.
RESULTS: Ghrelin levels in ICPP group were Log (2.42+/-0.26) ng/L, which were significantly lower than those in PT group and controls [Log (2.62+/-0.21) ng/L and Log (2.58+/-0.44) ng/L, respectively, P<0.05]. However there was no significant difference between PT group and controls(P>0.05). Ghrelin levels of ICPP girls with Tanner III were Log (2.31+/-0.24) ng/L, significantly lower than those of ICPP girls with Tanner II [Log (2.53+/-0.24) ng/L, P<0.05]. By bivariate correlation analysis, ghrelin levels in precocious puberty girls were negatively correlated with ACTH, PRL and LH15, LH30 and LH60 in GnRH test(r=-0.248, -0.235, -0.445, 0.405, 0.398, respectively, P<0.05). No significant correlation was found between ghrelin and GH, LH0(-2), FSH0(-2), and FSH15, FSH30 and FSH60 in GnRH test.
CONCLUSION: ICPP girls have lower plasma ghrelin levels, which are decreased with the development of Tanner stage. The plasma ghrelin levels are negatively correlated with ACTH, PRL and LH.
METHODS: A total of 84 patients aged from 6 to 9 years were enrolled in this study. They were divided into idiopathic central precocious puberty (ICPP) and premature thelarche(PT)groups according to their secondary sexual characteristics, bone age, volumes of uterus and ovary, and results of GnRH test. Plasma ghrelin levels were measured by radioimmunoassay. ACTH, TSH, PRL, GH, LH and FSH were measured by chemoluminescence technique.
RESULTS: Ghrelin levels in ICPP group were Log (2.42+/-0.26) ng/L, which were significantly lower than those in PT group and controls [Log (2.62+/-0.21) ng/L and Log (2.58+/-0.44) ng/L, respectively, P<0.05]. However there was no significant difference between PT group and controls(P>0.05). Ghrelin levels of ICPP girls with Tanner III were Log (2.31+/-0.24) ng/L, significantly lower than those of ICPP girls with Tanner II [Log (2.53+/-0.24) ng/L, P<0.05]. By bivariate correlation analysis, ghrelin levels in precocious puberty girls were negatively correlated with ACTH, PRL and LH15, LH30 and LH60 in GnRH test(r=-0.248, -0.235, -0.445, 0.405, 0.398, respectively, P<0.05). No significant correlation was found between ghrelin and GH, LH0(-2), FSH0(-2), and FSH15, FSH30 and FSH60 in GnRH test.
CONCLUSION: ICPP girls have lower plasma ghrelin levels, which are decreased with the development of Tanner stage. The plasma ghrelin levels are negatively correlated with ACTH, PRL and LH.
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