Deletion of the G protein-coupled Receptor GPR30 Impairs Glucose Tolerance, Reduces Bone Growth, Increases Blood Pressure, and Eliminates Estradiol-stimulated Insulin Release in Female Mice.
Författare
Summary, in English
In vitro studies suggest that the G protein-coupled receptor GPR30 is a functional estrogen receptor. However, the physiological role of GPR30 in vivo is unknown, and it remains to be determined if GPR30 is an estrogen receptor also in vivo. To this end, we studied the effects of disrupting the GPR30 gene in female and male mice. Female GPR30((-/-)) mice had hyperglycemia and impaired glucose tolerance, reduced body growth, increased blood pressure, and reduced serum insulin-like growth factor-I levels. The reduced growth correlated with a proportional decrease in skeletal development. The elevated blood pressure was associated with an increased vascular resistance manifested as an increased media:lumen ratio of the resistance arteries. The hyperglycemia and impaired glucose tolerance in vivo were associated with decreased insulin expression and release in vivo and in vitro in isolated pancreatic islets. GPR30 is expressed in islets, and GPR30 deletion abolished estradiol-stimulated insulin release both in vivo in ovariectomized adult mice and in vitro in isolated islets. Our findings show that GPR30 is important for several metabolic functions in female mice including estradiol-stimulated insulin release.
Avdelning/ar
- Drug Target Discovery
- Islet cell physiology
- Kärlfysiologi
- Diabetes - öcellsexocytos
- Sektion II
- Kardiologi
Publiceringsår
2009
Språk
Engelska
Sidor
687-698
Publikation/Tidskrift/Serie
Endocrinology
Volym
150
Issue
2
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Oxford University Press
Ämne
- Endocrinology and Diabetes
Status
Published
Forskningsgrupp
- Drug Target Discovery
- Islet cell physiology
- Vascular Physiology
- Diabetes - Islet Cell Exocytosis
ISBN/ISSN/Övrigt
- ISSN: 0013-7227