beta-carotene and Ovarian-Cysts

The aims of this study were to determine the concentrations of the progesterone, oestradiol-17-beta, vitamin A, C and beta-carotene in plasma and cyst fluid and to relate these values with cystic diameter and membrane thickness of Holstein cattle with ovarian luteal cyst. 1650 Holstein cows were examined for the presence of the ovarian cyst and luteal and follicular cystic ovaries were obtained following slaughtering in personal slaughterhouse in Konya-Turkey. 15 Luteal and 15 follicular cystic ovaries were distinguished by rectal palpation and by post mortem ultrasonographic examination. Plasma and cyst fluid, hormone and vitamin analyses were carried out by EIA method and spectrophotometric measurement respectively. Although there was no relationship between beta-carotene and vitamin A in plasma and cyst fluid of both cyst type and hormone concentrations, the vitamin C concentration of cyst fluid was found significantly higher in luteal cyst than in follicular cyst. Moreover, there is a positive correlation among values of the vitamin C concentrations of cyst fluid and cystic membrane thickness, plasma and the cyst fluid progesterone concentrations, but there is a negative correlation among the vitamin C concentrations of cystic fluid and oestradiol 17beta levels of plasma and cyst fluid. In conclusion, vitamin C concentration of cyst fluid supported ultrasonographic and endocrinologic findings. Also, it can be postulated that vitamin C is probably effective on progesterone synthesis in the luteal tissue of cyst.

Topics: Animals; Ascorbic Acid; beta Carotene; Cattle; Cattle Diseases; Estradiol; Female; Ovarian Cysts; Progesterone; Vitamin A

Topics: Animals; beta Carotene; Carotenoids; Cattle; Cattle Diseases; Endometritis; Female; Infertility, Female; Ovarian Cysts; Vitamin A

Topics: Animals; beta Carotene; Carotenoids; Cattle; Cattle Diseases; Female; Ovarian Cysts; Vitamin A; Vitamin E

Topics: Animals; beta Carotene; Carotenoids; Cattle; Cattle Diseases; Female; Ovarian Cysts; Vitamin A

Sixty-two multiparous and 35 primiparous Holstein cows were assigned randomly at 10 days postpartum to receive a ration with or without 300 mg beta-carotene/cow per day. Multiparous and primiparous cows were grouped separately and group-fed complete rations once daily. Incidence of ovarian cysts (26% by rectal palpation) was not affected by beta-carotene fed. Multiparous cows had greater incidence (39%) of ovarian cysts than primiparous cows (11%). Fifty-seven percent of cysts were classified follicular by rectal palpation. Progesterone concentration of milk also was used for diagnosis of type of cyst. Cows with ovarian cysts and with progesterone concentrations in milk less than 1 ng/ml were classified follicular, and those having concentration greater than 1 ng/ml were classified luteal. As determined by milk progesterone, rectal palpation was more accurate for diagnosis of luteal cysts than for diagnosis of follicular cysts. Progesterone concentrations of milk for animals with luteal and follicular cysts were 10.66 +/- 1.29 and .37 +/- .07 ng/ml. beta-Carotene did not affect response or days to respond to treatment with human chorionic gonadotropin or gonadotropin-releasing hormone. Supplemental beta-carotene was not beneficial for reducing incidence of ovarian cysts in cows receiving an adequate supply of beta-carotene in their diet.

Topics: Animals; beta Carotene; Carotenoids; Cattle; Cattle Diseases; Chorionic Gonadotropin; Female; Food, Fortified; Ovarian Cysts; Pituitary Hormone-Releasing Hormones; Pregnancy; Puerperal Disorders