Back to Search
Start Over
Messenger ribonucleic acid expressions of hepatocyte growth factor, angiopoietins and their receptors during follicular development in gilts
- Source :
- The Journal of reproduction and development. 49(3)
- Publication Year :
- 2004
-
Abstract
- application/pdf<br />Angiogenic factors are associated with angiogenesis during follicular development in the mammalian ovary. The aim of the present study was to determine the relationships between the vascular network and mRNA expressions of angiopoietins (Ang)-1, Ang-2 and hepatocyte growth factor (HGF), and their receptors in follicles at different developmental stages during follicular development. Ovaries in gilts were collected 72 h after equine chorionic gonadotropin (eCG, 1250 IU) treatment for histological observation of the capillary network. Granulosa cells and thecal tissues in small (5 mm) individual follicles were collected for detection of mRNA expression of HGF, Ang-1 and Ang-2 in granulosa cells, and HGF receptor (HGF-R) and Tie-2 in the theca cells by semi-quantitative RT-PCR. The number of capillaries in the thecal cell layer increased significantly in healthy follicles at all developmental stages in the eCG group compared with those in controls. The expression of Ang-1 mRNA declined in granulosa cells of medium and large follicles and the level of Ang-2 mRNA increased in granulosa cells of small follicles after eCG treatment. The ratio of Ang-2/Ang-1 increased in small, medium and large follicles from ovaries after eCG treatment, but Tie-2 mRNA expression in the theca cells did not change. The level of HGF mRNA increased in granulosa cells of small follicles after eCG treatment but HGF-R in theca cells was not increased by eCG. These data suggested that the angiopoietins might be associated with thecal angiogenesis during follicular development in eCG-treated gilts.
- Subjects :
- medicine.medical_specialty
endocrine system
Angiogenesis
Swine
Ovary
Biology
Chorionic Gonadotropin
Angiopoietin-2
Ovarian Follicle
Internal medicine
Follicular phase
medicine
Angiopoietin-1
Animals
HGF
RNA, Messenger
Equine chorionic gonadotropin
Receptor
DNA Primers
Pig
Granulosa Cells
Base Sequence
Hepatocyte Growth Factor
Angiopoietins
Proto-Oncogene Proteins c-met
Receptor, TIE-2
Capillaries
medicine.anatomical_structure
Endocrinology
Follicular Development
Theca
Theca Cells
Animal Science and Zoology
Hepatocyte growth factor
Female
hormones, hormone substitutes, and hormone antagonists
angiopoietins
medicine.drug
Subjects
Details
- ISSN :
- 09168818
- Volume :
- 49
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- The Journal of reproduction and development
- Accession number :
- edsair.doi.dedup.....94b2a0dd224141afc832c3a9f8af51da