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Pregnancies at the Uterotubal Junction: A Review of Terminology (Interstitial, Cornual, and Angular) and Recommendations for Management.
Reprod Sci
September 2024
Reproductive Medicine Associates, Basking Ridge, NJ, USA.
Ectopic pregnancies are one of the most common causes of obstetric mortality worldwide. Interstitial ectopic pregnancies, defined as an extracavitary pregnancy within the portion of the Fallopian tube that transverses the myometrium, have reported mortality rates approximately seven times higher than all types of ectopic pregnancy combined. In contrast, intracavitary eccentric gestations, often labeled as "cornual" or "angular" pregnancies, have reportedly high rates of live birth.
View Article and Find Full Text PDFCollection of Capacitated Sperm from Different Locations Along the Reproductive Tract of Time-Mated Female Mice by Microdissection.
Bio Protoc
October 2021
Department of Cellular & Molecular Physiology, Yale School of Medicine, New Haven, USA.
Mammalian sperm cells are not capable of fertilizing an egg immediately after ejaculation; instead, they must gradually acquire the capacity to fertilize while they travel inside the female reproductive tract. Sperm cells are transported by the muscular activity of the myometrium to the utero-tubal junction (UTJ) before entering the oviduct where they undergo this physiological process, termed capacitation. Since the successful emulation of mammalian sperm capacitation , which led to the development of fertilization techniques, sperm capacitation and gamete interaction studies have been mostly carried out under conditions.
View Article and Find Full Text PDFBackground Hysterosalpingram (HSG) evaluation of tubal patency is typically performed in the follicular phase, but data to support this timing are lacking. Purpose To determine whether menstrual cycle phase or hormonal treatments affect observation of tubal patency during HSG. Material and Methods Ten participants underwent repeated HSG examinations: during the follicular and luteal phase of a natural menstrual cycle; 30 days following continuous administration of a combined oral contraceptive (COC); and 30 days after an intramuscular injection of depo medroxyprogesterone (DMPA) acetate.
View Article and Find Full Text PDFSeminal plasma aids the survival and cervical transit of epididymal ram spermatozoa.
Reproduction
November 2014
Faculty of Veterinary ScienceThe University of Sydney, RMC Gunn Building (B19) Regimental Drive, Sydney, New South Wales 2006, AustraliaUMR 85 INRACNRS-Université de Tours-Haras Nationaux, Station de Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, F-37380 Nouzilly, FranceFaculty of MedicineThe University of Sydney, Sydney, Australia.
Seminal plasma purportedly plays a critical role in reproduction, but epididymal spermatozoa are capable of fertilisation following deposition in the uterus, calling into question the biological requirement of this substance. Through a combination of direct observation of spermatozoa in utero using probe-based Confocal Laser Endomicroscopy, in vivo assessment of sperm fertility and in vitro analysis of various sperm functional parameters, this study investigated the role of seminal plasma in spermatozoa transit through the cervix of the ewe. Following deposition in the cervical os, epididymal spermatozoa previously exposed to seminal plasma displayed an enhanced ability to traverse the cervix as evidenced by both significantly higher pregnancy rates and numbers of spermatozoa observed at the utero-tubal junction when compared with epididymal spermatozoa not previously exposed to seminal plasma.
View Article and Find Full Text PDFThree-dimensional architecture of the ovine oviductal mucosa.
Anat Histol Embryol
October 2014
Instituto Universitario de Ciencias Ambientales de Aragón (IUCA), Universidad de Zaragoza, Ctra Cuarte, S/N 22071, Huesca, Spain.
The objective of this work was to establish for the first time a complete three-dimensional model of the ovine oviductal mucosa. The oviducts of 15 cyclic ewes were examined combining the direct examination of the mucosa, by scanning electron microscopy (SEM) and histology, with the SEM observation of resin moulds of the oviductal lumen. Around the ostium abdominale, all longitudinal primary folds and wide secondary are seen to form cul-de-sacs, with their opening pointing in the ovarian direction were observed.
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