To further evaluate the role exerted by endogenous opioids on LH secretion a naloxone challenge (0.08 mg/Kg b.w. i.v.) was performed in 23 healthy children at different stages of puberty, in 5 adolescents in different period of menstrual cycle, in 3 case of idiopathic precocious puberty (PP), in 7 cases of delayed puberty (DP), in 4 females affected by hypogonadotropic hypogonadism (HH) and in 6 patients affected by polycystic ovary disease (PCOD). Naloxone does not induce any significant change on LH plasma levels in prepubertal healthy children and in all the cases of PP and DP. Similarly there was no LH response in healthy adolescents neither in HH nor in PCOD, the response to naloxone appears only in preovulatory and luteal phases. These data indicate that the central opioid system regulating LH secretion in humans is active only at more advanced stages of puberty and it does not seem to play a role in the beginning of sexual maturation. Moreover gonadal steroids seem to play a fundamental modulatory role on opioid-controlled LH secretion.

Endogenous opioid inhibitory tone on LH secretion in normal puberty and in several pubertal disturbances / Bernasconi, S.; Petraglia, F.; Iughetti, L.. - In: ACTA ENDOCRINOLOGICA. SUPPLEMENTUM. - ISSN 0300-9750. - ELETTRONICO. - 113:(1986), pp. 196-201.

Endogenous opioid inhibitory tone on LH secretion in normal puberty and in several pubertal disturbances

Petraglia, F.;
1986

Abstract

To further evaluate the role exerted by endogenous opioids on LH secretion a naloxone challenge (0.08 mg/Kg b.w. i.v.) was performed in 23 healthy children at different stages of puberty, in 5 adolescents in different period of menstrual cycle, in 3 case of idiopathic precocious puberty (PP), in 7 cases of delayed puberty (DP), in 4 females affected by hypogonadotropic hypogonadism (HH) and in 6 patients affected by polycystic ovary disease (PCOD). Naloxone does not induce any significant change on LH plasma levels in prepubertal healthy children and in all the cases of PP and DP. Similarly there was no LH response in healthy adolescents neither in HH nor in PCOD, the response to naloxone appears only in preovulatory and luteal phases. These data indicate that the central opioid system regulating LH secretion in humans is active only at more advanced stages of puberty and it does not seem to play a role in the beginning of sexual maturation. Moreover gonadal steroids seem to play a fundamental modulatory role on opioid-controlled LH secretion.
1986
113
196
201
Bernasconi, S.; Petraglia, F.; Iughetti, L.
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1165638
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