Progesterone is a critical hormone in early pregnancy. A low level of serum progesterone is associated with threatened miscarriage. We aim to establish the distribution of maternal serum progesterone in normal pregnancies compared to pregnancies complicated by threatened miscarriage from 5 to 13 weeks ge...
Background In women with a singleton pregnancy and sonographic short cervix in mid-gestation, vaginal administration of progesterone reduces the risk of early preterm birth and improves neonatal outcomes, without any demonstrable deleterious effects on childhood neurodevelopment. In women with twin ...
To our knowledge, no attempts have been made to evaluate the accuracy of the PAG-RIA test for early pregnancy diagnosis in sheep. The aim of this field study was to compare the accuracy of PAG and P4 tests for early pregnancy diagnosis in sheep....
CORTICOSTERONE Plasma B mean levels dropped by almost 16-fold from 4.44 ng/ml at 2 hr after birth to 0.28 ng/ml in early infancy (Table I). Thereafter, a slight increasing tendency was noted which became significant (P < 0.05) at 7-1 1 yr of age (Table 2). By linear regression ...
Regulation of Numbers of Macrophages in the Endometrium of the Sheep by Systemic Effects of Pregnancy, Local Presence of the Conceptus, and Progesterone Many species exhibiting hemochorial placentation experience an accumulation of macrophages in the endometrium during pregnancy. For the present study,...
The WHI estrogen plus progestin substudy was stopped early. According to the predefined stopping rule, after an average follow-up of 5.6 years of treatment, the increased risk of breast cancer and cardiovascular events exceeded the specified benefits included in the "global index." The absolute ex...
Oestrus, numbers of ovulations and follicle growth were observed during the week following treatment. In some experiments, ewes were mated to fertile rams and fertility and fecundity were recorded. Experiments were carried out at different stages of the breeding season. Relationships between methods ...
“the replicative factors related to BC,” including a protective reproductive history, with late menarche, early first pregnancy, high parity with prolonged breastfeeding, irregular infrequent cycles, fewer ovulatory cycles, more stress-related amenorrhea and early menopause [6]. Recent reviews have ...
In P4 supplemented pregnancies, whole and demi embryos attained a similar size on Day 42 of pregnancy. Embryo size at transfer, early exogenous P4 supplementation and their interactions had no effects (P > 0.05) on plasma P4 concentrations. However, the post-hoc LSD evaluation showed that ...
Louis J. Muglia, in Knobil and Neill's Physiology of Reproduction (Fourth Edition), 2015 Progesterone In all viviparous species studied so far, progesterone is essential for the establishment and maintenance of pregnancy, and its withdrawal is a key trigger for parturition. The “progesterone ...