Animal studies indicate that either the fetus or the intrauterine environment, both of which set the pattern for fetal growth, may affect the timing of parturition. The authors examined the association between fetal growth and timing of spontaneous onset of labor in humans among low-risk white US women with singleton pregnancies (1987-1991). They restricted the data to pregnancies which had a r...

The present study analysed the response of adult female capybaras (Hydrochaeris hydrochaeris) to different dietary supplementation in relation to litter size per parturition and oestradiol secretion profile during pregnancy and the oestrous cycle. All four experimental groups received 'camerum' grass (Pennisetum purpureum) and water ad libitum and three of the groups were also fed a protein, li...

Endogenous opioids play a significant role in mammalian parturition as well as in the behaviors associated with delivery itself and toward the emerging young. Distention of the uterus, and distention and mechanical stimulation of the vaginal/cervical area are critical stimuli in the positive feedback loop associated with expulsion of the fetus, and in the onset of maternal behavior upon emergen...

I . A combination of balance and isotope techniques has been used to study calcium metabolism in ten sheep at different stages of pregnancy, and the results have been combined with earlier results obtained during lactation to show the variations in Ca metabolism which occur during the whole reproductive cycle. 2. Transfer of Ca to the foetuses during pregnancy and to the milk after parturition ...

BACKGROUND Several studies have shown that the corpus luteum is the principal source of progesterone during the gravidity period in reptiles; however, its participation in the maintenance of gestation in the viviparous squamata is in dispute. The effects of ovariectomy or luteectomy vary according to the species and the time at which the procedure is performed. In this paper, we describe the ef...

The purpose of this paper was to impair normal parturition in rats in order to measure tissue levels of progestins and estrogens and compare these results with those of normal parturition in rats. Abnormal parturition was obtained by injection of isotonic saline into the uterine lumen of pregnant rats at the end of pregnancy or by handling the uterus. After each of these treatments on day 21 of...

The objectives were to determine the effect of dietary fish oil (FO) on uterine secretion of PGF2alpha, milk production, milk composition, and metabolic status during the periparturient period. Holstein cows were assigned randomly to diets containing FO (n = 13) or olive oil (OO, n = 13). Cows were fed prepartum and postpartum diets that provided approximately 200 g/d from 21 d before the expec...

Due to the recent trend of women having children at an older age, number pregnancies complicated by cervical cancer has increased. In present study, clinical characteristics patients with pregnancy were analyzed. The clinicopathological and prognosis during who underwent treatment Kyushu University Hospital from January 2008 December 2017 assessed retrospectively their medical records. informat...

The main purpose of this investigation was to identify and suggest suitable early screening inflammatory markers for the diagnosis uterine infections such as acute septic metritis (ASM) in Holstein heifers. In addition, achieve above -mentioned aim, objectives present study were tried determine relationship between blood serum lactate, phase proteins (APPs), pro/anti cytokine levels, formation ...

Postpartum thyroiditis (PPT) is characterized by mild thyrotoxicosis occurring within one year of parturition commonly followed transient hypothyroidism. Having genetic background autoimmune thyroid disorders a risk factor for it because the immune reactivation during postpartum period trigger PPT. Pandemic COVID-19: caused SARS-CoV-2 infection global health problem, and occurrence Graves’ dise...