SUMMARY 1. The uptake of ~-aminoisobutyric acid by the immature rat uterus was studied kinetically in vitro, and the stimulatory action of inzulin on uptake was characterized. Other amino acids were also studied for comparison. 2. ~-Aminoisobutyric acid uptake was increased if the uteri were pretreated with insulin for 20 rain or more. The V of the saturable transport was increased by 19 ~ by i...

Nitric oxide (NO) plays a crucial role in many biological systems. Recent evidence indicates that NO is found in the human uterus. During pregnancy, it is produced in the placenta, the decidua and the myometrium. In the nonpregnant state, nitric oxide synthase, the enzyme that catalyses the production of NO, has been identified in both the myometrium and the endometrium. Potential roles for NO ...

The annual oviductal cycle of the American alligator, Alligator mississippiensis, is described using light and electron microscopy. Previous work done by Palmer and Guillette ([1992] Biol Reprod 46:39-47) shed some light on the reproductive morphology of the female alligator oviduct; however, their study was limited and did not report details relating to variation across the reproductive season...

A substantial effort has been made to elucidate the biochemical role of estrogens in the mam malian economy. Many interesting phenomena have been observed, and some areas have been clarified; but there has been no evidence of an in herent key moleto explain the activity of estrogens. Indeed, Jensen (11) recently published a masterful review of the subject in which he offered a novel suggestion ...

The unusual reproductive biology of many spider species makes them compelling targets for evolutionary investigations. Mating behavior studies combined with genital morphological investigations help to understand complex spider reproductive systems and explain their function in the context of sexual selection. Oonopidae are a diverse spider family comprising a variety of species with complex in...

A case of perforation of the uterus by the Multiload Cu250 IUD in a 28 year old Malay woman is presented. The Multiload Cu250 is a newer device, introduced in 1974, and the mode of insertion (withdrawal) makes perforation with this IUD unlikely and to date no such case had been reported. The patient, para 3, had a period of amenorrhea of 7 weeks. A menstrual regulation procedure was performe...

Cellular oscillators in the uterus play critical roles in the gestation processes of mammals through entraining of the clock proteins to numerous downstream genes, including growth/differentiation factor (Gdf)10 and Gdf15. The expression of Gdf10 and Gdf15 is significantly increased in the uterus during decidualization, but the mechanism underlying the regulation of Gdf gene expression in the u...

Müllerian and vaginal anomalies are congenital malformations of the female reproductive tract resulting from alterations in the normal developmental pathway of the uterus, cervix, fallopian tubes, and vagina. The most common of the Müllerian anomalies affect the uterus and may adversely impact reproductive outcomes highlighting the importance of gaining understanding of the genetic mechanisms t...

Background: Uterus Didelphys is one of the rare cases uterine abnormalities that mostly asymptomatic until pregnancy and delivery. The present report introduces a case double uterus with separate cervix common vagina (Uterus Didelphys). Materials Methods: patient was 38-year-old woman referred to radiology clinic by gynecologist. She pregnant at time; however, she had history repeated miscarria...

It is not possible in surgery to point with greater triumph to any operation than intra-peritoneal hysterectomy, when one thinks that only so lately as 1896 the operation was performed by very few surgeons on account of its very high mortality, but from 1896 to 1906 it came down to 2 per cent.