Effects of aging on gene expression and mitochondrial DNA in the equine oocyte and follicle cells.
In Reprod Fertil Dev, Apr 2015
The aims of the study were to examine quantitative and temporal differences in mRNA for LH receptor (LHR), amphiregulin (AREG) and epiregulin (EREG) in granulosa cells, phosphodiesterase (PDE) 4D in cumulus cells and PDE3A, G-protein-coupled receptor 3 (GPR3), growth differentiation factor 9 (GDF9), bone morphogenetic protein 15 (BMP15) and mitochondrial (mt) DNA in oocytes.
Constitutive Activity among Orphan Class-A G Protein Coupled Receptors.
Rolla, United States. In Plos One, 2014
Five patterns of activity were noted: 1) inhibition under both baseline and forskolin stimulated expression (GPR15, GPR17, GPR18, GPR20, GPR25, GPR27, GPR31, GPR32, GPR45, GPR57, GPR68, GPR83, GPR84, GPR132, GPR150, GPR176); 2) no effect on baseline expression, but inhibition of forskolin stimulated expression (GPR4, GPR26, GPR61, GPR62, GPR78, GPR101, GPR119); 3) elevation of baseline signaling coupled with inhibition of forskolin stimulated expression (GPR6, GPR12); 4) elevation of baseline signaling without inhibition of forskolin stimulated expression (GPR3, GPR21, GPR52, GPR65); and 5) no effect on expression (GPR1, GPR19, GPR22, GPR34, GPR35, GPR39, GPR63, GPR82, GPR85, GPR87).
β-arrestin 2 regulates Aβ generation and γ-secretase activity in Alzheimer's disease.
Leuven, Belgium. In Nat Med, 2013
Two GPCRs implicated previously in Alzheimer's disease (GPR3 and the β(2)-adrenergic receptor) mediate their effects on Aβ generation through interaction with β-arrestin 2. β-arrestin 2 physically associates with the Aph-1a subunit of the γ-secretase complex and redistributes the complex toward detergent-resistant membranes, increasing the catalytic activity of the complex.
Genetic and phenotypic heterogeneity in ovarian failure: overview of selected candidate genes.
Miami, United States. In Ann N Y Acad Sci, 2007
Genes that exert known hormonal effects (FSH, FSHR, LH, LHR, CYP17, CYP19) primarily affect follicle function, as do BMP15, GDF9, and GPR3.
Tours, France. In Gynecol Obstet Fertil, 2006
On the one hand, the oocyte will modulate follicle growth through specific gene expression (Figalpha, GDF-9, BMP15) as well as its meiosis (GPR3 et PDE3A).
Vascular sphingosine-1-phosphate S1P1 and S1P3 receptors.
United States. In Drug News Perspect, 2004
The sphingolipid sphingosine-1-phosphate (S1P) acts on five subtypes of G-protein- coupled receptors, termed S1P(1) (formerly endothelial differentiation gene-1 [Edg-1]), S1P(2) (Edg-5), S1P(3) (Edg-3), S1P(4) (Edg-6) and S1P(5) (Edg-8), and possibly several other "orphan" receptors, such as GPR3, GPR6 and GPR12.