Ovarian Arterial Blood Research Articles

Ovarian venous blood PO 2 , PCO 2 and pH in women.

Summary. Measurements of Po2, Pco2 and pH have been carried out in human ovarian venous, peripheral venous and arterial blood, and in ovarian follicular fluid. The Po2 in ovarian venous blood is higher than in peripheral venous blood. Mean oxygen consumption by the human ovary has been calculated to be 1·4 ml oxygen/100 g ovarian tissue/min. Taken in conjunction with a mean ovarian blood flow of 20·3 ml/min, these findings are compatible with the presence of arterio-venous shunts within the human ovary. Oxygen tension in follicular fluid may be substantially lower than oxygen tension in peripheral and ovarian venous blood.

Determination of the in vivo rate of progesterone secretion by the ovary of the pig during the luteal phase of the estrous cycle.

A method for the simultaneous collection of ovarian venous and arterial blood samples from pigs was developed. The method insures the collection of the total ovarian venous blood uncontaminated by extra-ovarian blood. Progesterone was not detected in the arterial samples collected simultaneously with ovarian venous samples from the same animals. The right ovary of the pig secreted an average of 1.41, 2.23 and 1.41 μg of progesterone/ml of ovarian venous plasma on days 7,11 and 13 of the 21-day estrous cycle, respectively. Progesterone was secreted by the ovary at a rate of 7.2, 13.4 and 7.6 μg/ovary per min on these same days of the estrous cycle, respectively. If it is assumed that all of the progesterone is secreted by the corpora lutea, the secretory rate can be expressed as 3.94, 2.96 and 2.74 μg of progesterone secreted per g of luteal tissue per min on days 7,11 and 13, respectively. (Endocrinology 82: 203, 1968)