JBRA assisted reproduction

RESEARCH QUESTION: What was the utilization, effectiveness and safety of assisted reproductive technology (ART) in Latin America during 2020? DESIGN: Retrospective collection of multinational data on ART performed by 188 institutions in 16…

OBJECTIVE: The embryo implantation includes a complex sequence of signaling events, comprising numerous molecular mediators, such as ovarian hormones, cytokines, adhesion molecules and, growth factors. One of the critical factors in angioge…

OBJECTIVE: The use of frozen embryos in the treatment of infertility with assisted reproductive techniques has been increased. Different methods are used to prepare the endometrium for frozen embryo transfer (FET). The aim of this study was…

OBJECTIVE: The disease in which we observe the invasion and growth of endometrial cells on extrauterine tissues and organs with the creation of a chronic inflammatory state is called endometriosis. It causes infertility and is present in mo…

OBJECTIVE: Information on the pregnancy rate after successive in-vitro fertilization (IVF) cycles and their associated costs is relevant for couples undergoing assisted reproduction treatments (ARTs). This study, therefore, sought to invest…

Endometriosis is a chronic inflammatory condition affecting up to 10% of women of reproductive age and this, depending on its severity, very often leads to infertility. New research has shed light on the role of underlying endometritis due …

The Herlyn-Werner-Wunderlich syndrome (HWWS) is characterized by the triad of uterus didelphys, obstructed hemivagina, and renal agenesis. The typical clinical presentation involves chronic pelvic pain, dysmenorrhea, and palpable abdominal …

OBJECTIVE: We investigated how history of malignant neoplasia affected oocyte developmental competence. METHODS: Fifty-two cycles of assisted reproductive technology (ART) in women with a history of malignant disease (case group) were comp…

OBJECTIVE: Single nucleotide variants have been implicated in the response to fertility treatment and a pharmacogenomic approach may help to customize therapy based on patient genome. We aimed to evaluate the effect, individual and combined…

The objective was to study clinical cases and understand the link between cesarean section scar defect with hydrometra and secondary infertility. A retrospective case series from an assisted reproductive center and infertility treatment cli…

OBJECTIVE: To evaluate the outcomes of a long GnRH agonist protocol with corifollitropin alfa followed by hMG in low responders. METHODS: Retrospective cohort study. Patients with a suboptimal previous ovarian response (<9 oocytes) and a n…

Brazil follows the trend of countries that went from high fertility to below replacement level; in many countries, fertility rates continue to fall, often to levels well below population replacement, especially in Europe and Eastern Asia. S…

OBJECTIVE: To assess whether follicular fluid (FF) from infertile women with endometriosis in advanced stages [moderate/severe (EIII/IV) without or with endometrioma (Endometrioma)] induce more oocyte damages than in early stages (minimal/m…

OBJECTIVE: Monozygotic twin (MZT) pregnancies increase the risk of maternal and infant mortality and include many complications. The present study describes our assisted reproductive technology (ART) procedures from the viewpoint of perinat…

OBJECTIVE: The objective was to analyse and compare the formation and quality of the embryos developed using conventional in vitro fertilization (IVF) and IVC techniques with an INVOCell™ device. METHODS: Two groups were formed, with eight…

OBJECTIVE: The aim of this study is to determine whether the serum concentrations of progesterone and/or prolactin after fresh embryo transfer are associated with pregnancy rates in in vitro fertilization treatment. METHODS: This retrospec…

OBJECTIVE: To investigate the relationship between progesterone (P4) levels on the day of hCG trigger and IVF outcomes. METHODS: This is a retrospective analysis of IVF cycles from January-2013 to December-2019 from a single center. Women …

In December 2014, the International Committee for Monitoring Assisted Reproductive Technology under the umbrella of the World Health Organization convened an expert meeting to re-examine, update and expand the infertility glossary previousl…

OBJECTIVE: Despite higher sperm DNA fragmentation may affect intracytoplasmic sperm injection (ICSI) outcomes, sperm selection protocols do not evaluate this parameter. Therefore, sperm's head birefringence has been suggested as an adjuvant…

OBJECTIVE: Follicle-stimulating hormone (FSH) is essential for folliculogenesis, acting through the follicle-stimulating hormone receptor (FSHR) that is present on the membrane of granulosa cells. Polymorphisms in the FSHR gene may lead to …

OBJECTIVE: Vitamin D3 has been shown to be effective in the treatment of PCOS. However, due to its poor solvability and bioavailability, effective time is delayed and dosage requirements are increased. In our previous study, we demonstrated…

OBJECTIVE: Endometrioma surgery is associated with a reduction in ovarian reserve. However, removal of an endometrioma may increase the likelihood of a spontaneous conception. The objective of this study was to assess the pre-operative and …

Assisted Reproductive technology encompasses all techniques involving ovarian stimulation to produce high-quality oocytes and manipulation of both oocytes and sperm in vitro to produce embryos for the purpose of reproduction. The final matu…