Region-specific proteomic changes in the canine oviduct during oocyte maturation following deslorelin-induced ovulation

Authors

Larindhorn Udomthanaisit, Chulalongkorn UniversityFollow
Sittiruk Roytrakul, National Science and Technology Development AgencyFollow
Wirakan Kallayanathum, Chulalongkorn UniversityFollow
Sudchaya Bhanpattanakul, Kasetsart UniversityFollow
Sawanya Charoenlappanit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development AgencyFollow
Theerawat Tharasanit, Chulalongkorn UniversityFollow

Abstract

Canine reproductive physiology is unique, with oocytes ovulated at an immature stage and completing meiosis within the oviduct. This study investigated protein expression in oviductal secretions from the ampulla and isthmus during oocyte maturation in dogs. Six anestrous female dogs were induced to eestrus using 4.7 mg deslorelin implants, followed by ovariohysterectomy at various time points. Samples were categorized into four groups (n=3 per group) based on oviductal region, histological confirmation, and oocyte maturation status. Proteomic analysis revealed regionspecific protein expression changes linked to oocyte maturation. In the ampulla, PRRG4, RCSD1, and UNC13C were downregulated, while CFAP54, ACLY, and MCOLN1 were upregulated, indicating roles in energy metabolism, calcium signaling, and cytoskeletal remodeling. In the isthmus, FCHSD1 and PRKCI were downregulated, while HIC1, ZMYND11, SORCS3, MEGF6, and DYNLRB1 were upregulated, potentially supporting oocyte quality and fertilization competence. These findings highlight dynamic proteomic shifts in the oviductal environment during oocyte maturation in dogs, suggesting the need for further studies to clarify the functional significance of these proteins.

DOI

10.56808/2985-1130.3856

First Page

1

Last Page

13

Recommended Citation

Udomthanaisit, Larindhorn; Roytrakul, Sittiruk; Kallayanathum, Wirakan; Bhanpattanakul, Sudchaya; Charoenlappanit, Sawanya; and Tharasanit, Theerawat (2025) "Region-specific proteomic changes in the canine oviduct during oocyte maturation following deslorelin-induced ovulation," The Thai Journal of Veterinary Medicine: Vol. 55: Iss. 2, Article 7.
DOI: https://doi.org/10.56808/2985-1130.3856
Available at: https://digital.car.chula.ac.th/tjvm/vol55/iss2/7