Glycogen content of rabbit tubular genitalia from mating through implantation

Abstract

Groups of five rabbits were killed at 0, 2, 4, 7, 10, 24, 48, 98, 168 and 240 hours after mating. The glycogen content of the lower half of the Fallopian tube was greater than in the upper half at each interval. Uterine and Fallopian tube levels of glycogen decreased during the interval from mating to ovulation. Both cervical and vaginal glycogen declined significantly within 24 hours after mating. Decidual uterine areas contained 1.5 and 5.0 times more glycogen on days 7 and 10, respectively, than interdecidual areas. Castrate rabbit Fallopian tube, uterus, cervix and vagina responded with glycogen synthesis to estradiol, but not to progesterone administration.

Metabolomic Profile of Oviductal Extracellular Vesicles across the Estrous Cycle in Cattle

“…The hormonal regulation of glycogen metabolism in the oviduct remains unclear, but reproductive cycle-dependent changes in oviductal glycogen have been evidenced [36]. In pigs and rabbits, reserves of glycogen in the oviducts were highest near ovulation and decreased during the following luteal phase [40,41]. Furthermore, the hormonal control of endometrial glycogen has been well studied in rats, rabbits, and mink, where P4 promotes glycogen catabolism while E2 stimulates uterine glycogen synthesis and storage [36,42,43].…”