Hypothalamic amenorrhea and cardiovascular hormones: changes of plasma calcitonin gene-related peptide and atrial natriuretic peptide levels.

Abstract:

:Typical modifications of cardiovascular activity and water and salt homeostasis throughout female reproductive life are well known. Differences in plasma levels of calcitonin gene-related peptide (CGRP) and atrial natriuretic peptide (ANP) have been observed in conditions characterized by different estrogenic levels, suggesting a correlation between female reproductive function and these cardiovascular hormones. The aim of our study was to investigate in hypothalamic amenorrhea the relationship between estrogen deficiency and plasma ANP and CGRP response to adaptive tests (saline infusion test and upright posture test, respectively). Women with hypothalamic amenorrhea (aged 18-28 years) (n = 6) and age-matched healthy controls (n = 6) underwent both functional tests. Plasma CGRP and ANP levels were measured by specific radioimmunoassays before and in course of the tests. Basal plasma CGRP levels of amenorrheic patients did not significantly differ from those of normal women, while basal plasma ANP levels were significantly higher compared to controls (p < 0.01). In amenorrheic women, plasma CGRP levels showed a significant increase in response to upright posture test, though lower than the increase observed in normal women. In contrast, saline infusion test determined a significant increase in plasma ANP levels only in control subjects. In women with hypothalamic amenorrhea, the altered response of CGRP and ANP to adaptive stimuli indicates a partial derangement in the control of the secretion of these cardiovascular hormones. Nevertheless, the differences between such modifications and those observed in other conditions of altered estrogenic levels, suggest that in amenorrheic women hypogonadism is not the major factor influencing CGRP and ANP response to adaptive stimuli.

journal_name

J Endocrinol Invest

authors

Bernardi F,Valentini A,Margutti A,Santuz M,Degli Uberti EC,Petraglia F,Genazzani AR

doi

10.1007/BF03347311

subject

Has Abstract

pub_date

1998-04-01 00:00:00

pages

251-6

issue

4

eissn

0391-4097

issn

1720-8386

journal_volume

21

pub_type

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