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Estrogen receptor-{alpha} antisense decreases brain estrogen receptor levels and affects ventilation in male and female rats

Report Among the Highlighted Topics on Gender Differences in the October Edition of the Journal of Applied Physiology

BETHESDA, Md. -- October 18, 2001 -- The American Physiological Society (APS) kicks off a special series entitled, Highlighted Topics on Gender Differences in Physiology, beginning with the October 2001 edition of the Journal of Applied Physiology, the Societys flagship publication. The October issue offers the following examination:

Estrogen Receptor-{alpha} Antisense Decreases Brain Estrogen Receptor Levels and Affects Ventilation in Male and Female Rats
The finding that "Estrogen receptor-{alpha} antisense decreases brain estrogen receptor levels and affects ventilation in male and female rats," is the result of an investigation conducted by Shashita R. Inamdar, Kathleen M. Eyster, and Evelyn H. Schlenker, all of the Division of Basic Biomedical Sciences at the University of South Dakota School of Medicine, Vermillion, SD.

Dr. Inamdar and colleagues explored the effects of estrogen receptor-{alpha}protein production in the brain of neonatal rats on the gender-specific ventilatory response to aspartic acid. To determine whether the activational effects of puberty modified these responses to aspartic acid the investigators evaluated animals shortly after weanling (~23 days old) and at adulthood (2-3 months old).

Background, Methodology and Findings
These investigators found that, during the late fetal and early neonatal period, estrogen receptors are more widely and abundantly expressed compared with that shown during adulthood. This is of great importance because the late fetal and early neonatal periods coincide with the critical developmental period when major organizational changes take place in the neuronal circuitry of the brain. Thus changes in ER expression during this stage can influence the growth and pattern of differentiation of the developing rat brain an
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Contact: Donna Krupa
krupaco1@aol.com
703-967-2751
American Physiological Society
17-Oct-2001


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