The effects of the estrogen receptor blocker, Faslodex (ICI 182,780), on estrogen-accelerated bone maturation in mice.

Abstract:

:Sex steroids accelerate bone maturation, but it is believed that estrogen action is needed for terminal epiphyseal fusion. In this study, we investigated the effects of a new estrogen-blocking agent, Faslodex (ICI 182,780), on estrogen-accelerated skeletal maturation in immature mice. On day-of-life 2 through 8, mice pups received either estradiol (5 microg/100 g body weight), Faslodex (100 microg/100 g body weight), a combination of Faslodex + estradiol, or vehicle alone. Skeletal maturation was assessed with a scoring system based on the size and appearance of epiphyseal plates in the forepaw and the lumbar spine. Estradiol caused acceleration of bone maturation in our mouse model (p < 0.05). Faslodex blocked the effect of estrogen, such that the mice receiving Faslodex + estradiol did not vary significantly from controls. Faslodex may prove useful in the treatment of patients with diseases causing rapid skeletal maturation, such as precocious puberty.

journal_name

Pediatr Res

journal_title

Pediatric research

authors

Gunther DF,Calikoglu AS,Underwood LE

doi

10.1203/00006450-199909000-00004

subject

Has Abstract

pub_date

1999-09-01 00:00:00

pages

269-73

issue

3

eissn

0031-3998

issn

1530-0447

journal_volume

46

pub_type

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