Cytobrush: A tool for sequential evaluation of gene expression in bovine endometrium

Author(s)

Cardoso, B. ^[1] ; Oliveira, M. L. ^[1] ; Pugliesi, G. ^[1] ; Batista, E. O. S. ^[1] ; Binelli, M. ^[1]

Affiliation

^[1] Univ Sao Paulo, Sch Vet Med & Anim Sci, Dept Anim Reprod, Pirassununga, SP - Brazil

• Document type: Journal article
• Source: REPRODUCTION IN DOMESTIC ANIMALS; v. 52, n. 6, p. 1153-1157, DEC 2017.
• Web of Science Citations: 3

Abstract

Contents Aims were to (i) compare specific transcript abundance between endometrial samples collected by transcervical biopsy and cytobrush and (ii) measure the abundance of endometrial transcripts involved in PGF2 synthesis in samples collected by cytobrush. In Experiment 1, endometrial samples were taken transcervically by cytobrush and biopsy 10days after ovulation. Compared to biopsy samples, abundance of transcripts for MSTN, AKR1C4 and PGR was similar, VIM, FLT1 and PTGES was lower (p<.05) and KRT18 and CD3D was greater in cytobrush samples (p<.05). Thus, there was an enrichment of epithelial and immune cells in the cytobrush samples. In Experiment 2, endometrial samples were collected by cytobrush on days 10, 13, 16 and 19 after ovulation. Abundance of PGR2 mRNA was maximum on day 10 then decreased (p<.05). Abundance of ESR1 decreased gradually from day 10 to day 16 then increased again on day 19. The greatest abundance of OXTR was noted on day 19. The sequential alterations in abundance of these transcripts are consistent with the release of PGF2 associated with luteolysis. In summary, cytobrush sampling provides representative, physiologically relevant samples of the luminal epithelium in cattle. (AU)

• FAPESP's process: 11/03226-4 - Signatures of receptivity
• Grantee: Mario Binelli
• Support Opportunities: Research Projects - Thematic Grants