Search results for "infertility"
showing 10 items of 295 documents
Assisted reproductive technology results: Why are live-birth percentages so low?
2014
The present bioessay aims to analyze the impact of parental age, cause of infertility, embryo chromosomal anomalies, assisted reproduction technology (ART) treatments, and environmental and occupational exposures to xenobiotics on ART results, particularly on live-birth percentages per transfer. Special attention is paid to analyzing the effects of these factors on the mitochondrial, genetic, and epigenetic traits of gametes and embryos to ascertain the molecular/cellular mechanisms responsible for the relatively low percentages of live births reported year after year in ART cycles. The bias of age distribution of women attending fertility clinics toward the late thirties and beyond and the…
O-115 Parental whole-exome sequencing allows the discovery of genetic causes of extreme IVF phenotypes such as oocyte/embryo developmental arrest and…
2021
Abstract Study question Do whole-exome sequencing (WES) data from infertile women provide valuable information for the discovery of genes/pathways involved in extreme IVF phenotypes, i.e. oocyte/embryo developmental arrest? Summary answer The development of a specific bioinformatic WES pipeline revealed known and new candidate genes/pathways for isolated oocyte/embryo developmental failure,providing the foundation to scale up research. What is known already The use of IVF has made it possible to identify extreme and isolated infertility phenotypes such as recurrent low oocytes maturity (LMR), recurrent low fertilization rate (LFR), or preimplantation developmental arrest (PDA) that would re…
Molecular and Cellular Insights into the Development of Uterine Fibroids
2021
Uterine leiomyomas represent the most common benign gynecologic tumor. These hormone-dependent smooth-muscle formations occur with an estimated prevalence of ~70% among women of reproductive age and cause symptoms including pain, abnormal uterine bleeding, infertility, and recurrent abortion. Despite the prevalence and public health impact of uterine leiomyomas, available treatments remain limited. Among the potential causes of leiomyomas, early hormonal exposure during periods of development may result in developmental reprogramming via epigenetic changes that persist in adulthood, leading to disease onset or progression. Recent developments in unbiased high-throughput sequencing technolog…
Efficacy of an Internet-Based Intervention to Promote a Healthy Lifestyle on the Reproductive Parameters of Overweight and Obese Women: Study Protoco…
2020
Este artículo se encuentra disponible en la siguiente URL: https://www.mdpi.com/1660-4601/17/22/8312 En este artículo también participan: Valentina Lucia La Rosa y Rosa M. Baños. Este artículo pertenece al número especial "Developmental and emotional aspects of pregnancy, childbirth, and parenting: current and future perspectives". Background: Infertility is estimated to affect 15% of couples of reproductive age. Weight management problems (being obese or overweight) are among the problems that produce infertility, both in women seeking spontaneous pregnancy and in those undergoing assisted reproduction techniques. Over the last few decades, the prevalence of obesity has increased alarmingl…
First report on fertility after allogeneic uterus transplantation
2010
Uterus transplantation may become the first available treatment for uterine factor infertility, which is due to the absence or malfunction of the uterus. Here we describe for the first time pregnancy after allogeneic uterus transplantation, as a proof of concept of uterine function in a transplanted uterus in a standardized animal model (rat) under immunosuppression.
Uterus Transplantation
2018
Uterus transplantation (UTx) has been successfully introduced as a treatment option for women with absolute uterine factor infertility (AUFI). AUFI representing approximately 3% to 5% of the female general population is linked to either congenital uterine agenesis (Mayer-Rokitansky-Küster-Hauser syndrome), major congenital uterine malformation (hypoplastic uterus, fraction of bicornuate/unicornuate uterus), a surgically absent uterus, or an acquired condition (intrauterine adhesions, leiomyoma) linked to uterine malfunction that causes implantation failure or defect placentation. The world's first clinical uterus transplant was performed in 2000. However, a hysterectomy became necessary sho…
Preclinical report on allogeneic uterus transplantation in non-human primates
2013
Study question Is it possible to perform allogeneic uterus transplantation (UTx) with a donation from a live donor in a non-human primate species and what immunosuppression is needed to prevent rejection? Summary answer Allogeneic UTx in the baboon is a donor- and recipient-safe surgical procedure; immunosuppression with induction therapy and a triple protocol should be used. What is known already UTx may become a treatment for absolute uterine factor infertility. Autologous UTx models have been developed in non-human primates with reports on long-term survival of the uterine grafts. STUDY DESIGN, SIZEAND DURATION: This experimental study included 18 female baboons as uterus donors and 18 f…
Contemporary genetic technologies and female reproduction
2012
Background The Fifth Evian Annual Reproduction (EVAR) Workshop Meeting discussed knowledge regarding contemporary genetics in female reproduction. Methods Specialist reproductive medicine clinicians and geneticists delivered presentations based on published literature and current research. The content of this report is based on the expert presentations and subsequent group discussions that took place during this Workshop. Results Numerous ovarian genes with a role in infertility have been identified. Future challenges for genetic screening of patients, such as those with polycystic ovary syndrome, primary ovarian insufficiency or endometriosis, include the identification of high-throughput …
Hysteroscopy for Uterine Cavity Assessment in Infertility
2020
Abstract Hysteroscopy is a surgical procedure that allows a direct view of the uterine cavity and the tubular ostium. This procedure can be performed for both diagnostic and curative purposes. Hysteroscopy have several indications including the evaluation of abnormal uterine bleeding, infertility or intrauterine tumours identified by ultrasound. The purpose of this paper is to evaluate the correlation between the diagnosis at admission and the intraoperative aspect of the uterine cavity following the hysteroscopic evaluation. We evaluated the patients admitted to the Obstetrics and Gynaecology Clinic of the Sibiu County Emergency Clinical Hospital during 1.01.2019-07.06.2019 who had the fol…
Massive Adenomyose bei einer Patientin mit Uterus septus completus
2006
Septate uterus is a malformation caused by the defective resorption of the Mullerian ducts. It may be incomplete, or -- less frequently -- complete. We present a case of a uterus septus completus with special emphasis on the endometrial changes. We describe a 46-year-old female patient (nullipara) with a known uterus septus suffering from hypermenorrhea. Sonography demonstrated a massively enlarged uterus with several nodes. Hysterectomy was performed and tissue specimens were routinely processed. Macroscopical examination revealed a 1 230 g-weight uterus septus completus. In particular, the myometrium was enlarged and exhibited a cystic cut surface with several nodes measuring up to 4.5 cm…