Are you aware of your citations? A cross-sectional survey on improper citations of retracted articles in assisted reproduction.

Research Question: Are authors aware when they have cited a retracted paper in their manuscripts in the medically assisted reproduction (MAR) field?

Design: A cross-sectional study based on an online survey was conducted to acquire information on the citation pattern from corresponding authors who had cited a retracted article. A dataset of retracted articles in the MAR field was collected from PubMed and Retraction Watch. A complete list of published articles that cited each retracted article was retrieved.

Preterm birth in singleton pregnancies conceived by in vitro fertilization or intracytoplasmic sperm injection: an overview of systematic reviews.

Background: The rate of preterm birth of singletons conceived through in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) is increased, being as high as 15% to 16% across Europe and the United States. However, the underlying etiology, phenotype, and mechanisms initiating preterm birth (PTB) are poorly understood.

Objective: To quantify the PTB risk and examine supposed etiology in IVF/ICSI singleton pregnancies compared to naturally conceived.

Extracellular vesicles secreted by human aneuploid embryos present a distinct transcriptomic profile and upregulate MUC1 transcription in decidualised endometrial stromal cells.

Study Question: Do extracellular vesicles (EVs) secreted by aneuploid human embryos possess a unique transcriptomic profile that elicits a relevant transcriptomic response in decidualized primary endometrial stromal cells (dESCs)?

Summary Answer: Aneuploid embryo-derived EVs contain transcripts of , , , and with differential abundance from euploid embryo-derived EVs and induce upregulation of transcript in dESCs.

What Is Known Already: We have previously reported that IVF embryos secrete EVs that can be internalized by ESCs, conceptualizing that successful implantation to the endometrium is facilitated by EVs. Whether these EVs may additionally serve as biomarkers of ploidy status is unknown.

When the Embryo Meets the Endometrium: Identifying the Features Required for Successful Embryo Implantation.

Evaluation of the optimal number of embryos, their quality, and the precise timing for transfer are critical determinants in reproductive success, although still remaining one of the main challenges in assisted reproduction technologies (ART). Indeed, the success of in vitro fertilization (IVF) treatments relies on a multitude of events and factors involving both the endometrium and the embryo. Despite concerted efforts on both fronts, the overall success rates of IVF techniques continue to range between 25% and 30%.

ESHRE guideline: number of embryos to transfer during IVF/ICSI†.

Study Question: Which clinical and embryological factors should be considered to apply double embryo transfer (DET) instead of elective single embryo transfer (eSET)?

Summary Answer: No clinical or embryological factor per se justifies a recommendation of DET instead of eSET in IVF/ICSI.

What Is Known Already: DET is correlated with a higher rate of multiple pregnancy, leading to a subsequent increase in complications for both mother and babies. These complications include preterm birth, low birthweight, and other perinatal adverse outcomes.

The effect of laser-assisted hatching on vitrified/warmed blastocysts: the ALADDIN randomized controlled trial.

Objective: To evaluate whether laser-mediated assisted hatching (AH) performed on vitrified/warmed blastocysts before embryo transfer can improve live birth rate.

Design: The "pArtiaL zonA pelluciDa removal by assisteD hatchINg of blastocysts (ALADDIN)" is a 2-center comparative study with a parallel randomized controlled design.

Setting: University hospital.

Beyond the microscope: the importance of leadership skills in IVF laboratory management.

In healthcare, leadership plays a crucial role in determining the quality of care and overall clinical performance. However, the pivotal role of leadership in the effective functioning and success of IVF laboratories is often overlooked. This commentary seeks to address this gap.

Shedding light on the ART laboratory.

This commentary examines the impact of light conditions in the assisted reproductive technology (ART) laboratory, specifically considering gametes and embryo culture. While these processes traditionally occur in the absence of light within the female reproductive tract, laboratory conditions often involve exposure to varying wavelengths, intensities and light sources. Although literature reports describe potential detrimental effects of certain wavelengths of light on biological material, these findings are often based on experiments that might not reflect actual laboratory conditions.

The Task Matters: A Comprehensive Review and Proposed Literature Score of the Effects of Chemical and Physical Parameters on Embryo Developmental Competence.

To explore the effects of chemical and physical parameters on embryo developmental competence, we conducted a systematic search on PubMed for peer-reviewed original papers using specific keywords and medical subject heading terms. Studies of interest were selected from an initial cohort of 4141 potentially relevant records retrieved. The most relevant publications were critically evaluated to identify the effect of these parameters on embryo development.

Surveillance of clinical research integrity in medically assisted reproduction: a systematic review of retracted publications.

Background And Purpose: Retraction is a significant consequence of scientific research, resulting from various factors ranging from unintentional errors to intentional misconduct. Previous reviews on retracted publications in obstetrics and gynecology have identified "article duplication," "plagiarism," and "fabricated results" as the main reasons for retraction. However, the extent of retracted articles in the literature on medically assisted reproduction (MAR) remains unclear.

Fertility Preservation as an Option for Women with Genetic Disorders: Insights from a SWOT Analysis on Elective Oocyte Freezing and Preimplantation Genetic Testing.

This paper uses a SWOT (strengths, weaknesses, opportunities, and threats) analysis to overview the option of fertility preservation in women with genetic diseases, who would later use preimplantation genetic testing for monogenic disorders, in order to not transmit their condition. Strengths associated with elective oocyte freezing are ethical considerations, overall maternal and fetal safety, and effectiveness, if performed at <35 years of age. Weaknesses are related to costs and rare but present (<1-3%) risks of maternal complications.

Obstetric, neonatal, and child health outcomes following embryo biopsy for preimplantation genetic testing.

Background: Preimplantation genetic testing (PGT) of embryos developed in vitro requires a biopsy for obtaining cellular samples for the analysis. Signs of cell injury have been described in association with this procedure. Thus, the consequences of the biopsy on obstetric and neonatal outcomes have been the subject of some quantitative analyses, although the reliability of data pooling may be limited by important issues in the various reports.

A Case-Control Study on the Effects of Plasticizers Exposure on Male Fertility.

Male infertility is a serious concern for public health, and the possible role of exposure to plasticizers such as phthalates and bisphenol A in contributing to the condition is widely debated. We have herein enrolled 155 infertility cases attending an infertility center and 211 controls (fathers of a spontaneously conceived newborn) to investigate this issue. The urinary levels of seven phthalates and BPA were analyzed through HPLC/MS/MS.

Delayed blastocyst development is influenced by the level of progesterone on the day of trigger.

Purpose: To evaluate the association between progesterone (P) level on the day of trigger and time to blastulation in IVF cycles.

Methods: This was a retrospective cohort study with autologous IVF cycles performed at our Institution from January 2019 to December 2021. A total of 1109 IVF cycles were included.

Evidence and consensus on technical aspects of embryo transfer.

Background: Ultrasound-guided embryo transfer (US-GET) is a widely performed procedure, but standards for the best practice are not available.

Objective And Rationale: This document aims to provide an overview of technical aspects of US-GET after considering the published data and including the preparation for the embryo transfer (ET) procedure, the actual procedure, the post-procedure care, associated pathologies, complications and risks, quality assurance and practitioners' performance.

Search Methods: A literature search for evidence on key aspects of the ET procedure was carried out from database inception to November 2021.

Laparoscopic Oocyte Retrieval and Cryopreservation during Vaginoplasty for Treatment of Mayer-Rokitansky-Kuster-Hauser Syndrome.

In Mayer-Rokitansky-Kuster-Hauser Syndrome (MRKHS) patients who are scheduled for laparoscopic vaginoplasty and have a desire for biological motherhood, we propose that a concomitant laparoscopic oocyte retrieval for cryopreservation is performed. Oocyte retrieval is pursued at the beginning of the laparoscopy. Right and left 5 mm trocars are positioned, through which a 17 G ovum aspiration needle is used for puncture of the right and left ovaries, respectively.

The effect of vitrified-warmed blastocyst transfer on postnatal growth: a 1-year follow-up questionnaire study.

Research Question: Is postnatal growth of singletons aged 12 months born after vitrified-warmed blastocyst transfer (frozen embryo transfer [FET]) different from children born after fresh blastocyst transfer?

Design: A retrospective cohort study conducted at a single university-affiliated obstetrics and fertility centre between 2014 and 2016. Women who underwent fresh transfer or FET at blastocyst stage and obtained a singleton live birth were included. Propensity score inverse probability weighting was used to balance baseline maternal characteristics between fresh and FET cycles.