RGD Reference Report - Expression of vascular endothelial growth factor (VEGF) receptors in rat corpus luteum: regulation by oestradiol during mid-pregnancy. - Rat Genome Database

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Expression of vascular endothelial growth factor (VEGF) receptors in rat corpus luteum: regulation by oestradiol during mid-pregnancy.

Authors: Sugino, N  Kashida, S  Takiguchi, S  Karube-Harada, A  Kato, H 
Citation: Sugino N, etal., Reproduction. 2001 Dec;122(6):875-81.
RGD ID: 10402151
Pubmed: PMID:11732982   (View Abstract at PubMed)

The aim of this study was to investigate the expression of vascular endothelial growth factor (VEGF) receptors, the fms-like tyrosine kinase (flt-1) and kinase insert domain-containing region (KDR), in corpora lutea obtained at different stages of the oestrous cycle and during pregnancy in rats. Immunohistochemistry revealed that both flt-1 and KDR were localized in luteal cells in addition to vascular endothelial cells, and that the intensity of staining was stronger in pregnant rats than in cyclic rats. Rats undergoing hypophysectomy-hysterectomy on day 12 of pregnancy were treated with oestradiol until day 15 of pregnancy to determine whether oestradiol is involved in expression of flt-1 and KDR mRNA in the corpus luteum during mid-pregnancy. The flt-1 and KDR mRNA contents in the corpus luteum were decreased significantly by hypophysectomy-hysterectomy, and these decreases recovered significantly after oestradiol treatment. Changes in the mass of the corpus luteum and serum progesterone concentrations paralleled the changes in expression of flt-1 and KDR mRNA. Developmental studies indicated that flt-1 and KDR mRNA contents in the corpus luteum were constant until day 15 of pregnancy but decreased significantly on day 21 of pregnancy. In conclusion, both flt-1 and KDR were expressed in luteal cells in addition to vascular endothelial cells, and expression was upregulated by oestradiol during mid-pregnancy. flt-1 and KDR may play a role in development of the corpus luteum and in production of progesterone during mid-pregnancy in rats.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
response to estradiol  IEP 10402151 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Flt1  (Fms related receptor tyrosine kinase 1)


Additional Information