Endocrine Abstracts

Today prolactin (PRL) has been demonstrated to regulate more then 300 different biological functions, including metabolism during lactation and in subjects with hyperprolactinemia. However, the mechanisms for how PRL regulates the adipose tissue in humans and rodents have remained unclear. We recently reported PRL receptor (PRLR) expression in the adipose tissue of lactating and in PRL-transgenic mice. These results suggest PRLR-mediated effects in adipose tissue. However, to ...

Continuous administration of 400 μg/day of letrozole (LET), a non-steroidal inhibitor of P450 aromatase, with start pre-pubertally to female rats, induces hyperandrogenemia and reproductive abnormalities similar to those observed in women with polycystic ovary syndrome (PCOS). However, these rats do not develop metabolic abnormalities, despite high circulating testosterone. A possible explanation may be that the dose was too high and thus completely inhibited the estrogen...