Western diet promotes endometriotic lesion growth in mice and induces depletion of Akkermansia muciniphila in intestinal microbiota.

Background: Endometriosis, affecting 10% of women in their reproductive years, remains poorly understood. Both individual and environmental unexplained factors are implicated in this heterogenous condition. This study aims to examine the influence of a Western diet on endometriosis lesion development in mice and to uncover the mechanisms involved.

Distribution of endometriosis phenotypes according to patients' age in adult women with surgical evaluation.

Study Question: What is the distribution of endometriosis phenotypes according to age in adult women undergoing surgery?

Summary Answer: The phenotype of endometriosis did not significantly vary after 24 years old.

What Is Known Already: The phenotypic evolution of endometriosis over time remains unclear. While adolescents can exhibit any type of endometriosis lesions, ovarian endometriosis (OMA) and/or deep-infiltrating endometriosis (DIE) tend to increase with age in young adults.

Assessment of the Pelvic Pain Experienced by Infertile Women is of Prime Importance for Diagnosing Endometriosis.

Objective: To provide evidence regarding the significance of painful symptoms among women suffering from infertility.

Design: An observational retrospective cross-sectional study.

Settings: University hospital-based research center.

Questionnaire-based screening of adolescents and young adult women can identify markers associated with endometriosis.

Study Question: Do adolescents and young adult women (YAW) with histologically proven endometriosis present a specific clinical history?

Summary Answer: Questionnaire screening of adolescents and YAW can identify clinical markers associated with histologically proven endometriosis.

What Is Known Already: Some validated questionaries can contribute to an earlier endometriosis diagnosis in adults. None of these scores, however, have been validated for adolescents or YAW.

Progesterone levels do not differ between patients with or without endometriosis/adenomyosis both in those who conceive after hormone replacement therapy-frozen embryo transfer cycles and those who do not.

Study Question: Do women with endometriosis who achieve a live birth (LB) after HRT-frozen embryo transfer (HRT-FET) have different progesterone levels on the day of transfer compared to unaffected women?

Summary Answer: In women achieving a LB after HRT-FET, serum progesterone levels on the day of the transfer did not differ between patients with endometriosis and unaffected patients.

What Is Known Already: In HRT-FET, several studies have highlighted the correlation between serum progesterone levels at the time of FET and LB rates. In the pathophysiology of endometriosis, progesterone resistance is typically described in the eutopic endometrium.

Clinical signs and diagnosis of fibroids from adolescence to menopause.

The aim of this review was to provide an updated assessment of the present diagnostic tools and clinical symptoms and signs to evaluate uterine fibroids (UFs) on the basis of current guidelines, recent scientific evidence, and a PubMed and Google Scholar search for peer-reviewed original and review articles related to clinical signs and diagnosis of UFs. Approximately 50%-75% of UFs are considered nonclinically relevant. When present, the most common symptoms are abnormal uterine bleeding, pelvic pain and/or bulk symptoms, and reproductive failure.

Uterine fibroid-related infertility: mechanisms and management.

Fibroids are a common pathology and increasingly observed in women seeking medical treatment for infertility. The longer reproductive horizon because of improvements in medical care and current trend for women to postpone childbearing are making fibroid-related infertility increasingly common. This review aimed to critically analyze the association between uterine fibroids and infertility, mechanisms by which uterine fibroids may impair fertility, and management of myoma-related infertility.

Menstrual Blood Donation for Endometriosis Research: A Cross-Sectional Survey on Women's Willingness and Potential Barriers.

An anonymous online survey in French was used to assess if endometriosis patients would be as ready as unaffected women to donate their menstrual blood for biological research on endometriosis and evaluate potential barriers to such donation. It was distributed in September 2022 by social media and two mailing lists, including a French patient organization. The questionnaire assessed participant age and brief medical history (hormonal contraception, endometriosis diagnosis, type of endometriosis), menstrual experience (menstrual blood abundance, dysmenorrhea), and whether participants would donate menstrual blood.

Intra-individual variability of serum progesterone levels on the day of frozen blastocyst transfer in hormonal replacement therapy cycles.

Study Question: Is there a significant intra-individual variability of serum progesterone levels on the day of single blastocyst Hormone Replacement Therapy-Frozen Embryo Transfer (HRT-FET) between two consecutive cycles?

Summary Answer: No significant intra-individual variability of serum progesterone (P) levels was noted between two consecutive HRT-FET cycles.

What Is Known Already: In HRT-FET cycles, a minimum P level on the day of embryo transfer is necessary to optimise reproductive outcomes. In a previous study by our team, a threshold of 9.

Impact of Endometriosis Surgery on In Vitro Fertilization/Intracytoplasmic Sperm Injection Outcomes: a Systematic Review and Meta-analysis.

Endometriosis-related infertility remains a therapeutic challenge. A burning issue in this field of research is determining whether pre-assisted reproductive technology (ART) surgery may be of some benefit in terms of reproductive outcomes. This systematic review and meta-analysis aimed at comparing ongoing pregnancy rates (OPR) and/or live birth rates (LBR) in patients who underwent endometriosis surgery before ART (IVF/ICSI) in comparison with patients who underwent first-line ART (IVF/ICSI).

Endometriosis-related infertility: severe pain symptoms do not impact assisted reproductive technology outcomes.

Study Question: Do severe endometriosis-related painful symptoms impact ART live birth rates?

Summary Answer: Severe pain symptoms are not associated with reduced ART live birth rates in endometriosis patients.

What Is Known Already: ART is currently recognized as one of the main therapeutic options to manage endometriosis-related infertility. Presently, no data exist in the literature regarding the association between the core symptom of the disease, e.

Hepatotoxicity of AKR1C3 Inhibitor BAY1128688: Findings from an Early Terminated Phase IIa Trial for the Treatment of Endometriosis.

Introduction: BAY1128688 is a selective inhibitor of aldo-keto reductase family 1 member C3 (AKR1C3), an enzyme implicated in the pathology of endometriosis and other disorders. In vivo animal studies suggested a potential therapeutic application of BAY1128688 in treating endometriosis. Early clinical studies in healthy volunteers supported the start of phase IIa.

Severe pelvic pain is associated with sexual abuse experienced during childhood and/or adolescence irrespective of the presence of endometriosis.

Study Question: Is endometriosis associated with childhood and/or adolescent sexual abuse?

Summary Answer: Endometriosis is not associated with a history of sexual abuse, unlike the presence of severe pelvic pain.

What Is Known Already: Several studies have highlighted a link between pelvic pain and sexual abuse during childhood/adolescence. Moreover, an inflammatory state has been described in patients with a history of childhood maltreatment.

Magnetic resonance imaging presentation of diffuse and focal adenomyosis before and after pregnancy.

Research Question: Is there a change in magnetic resonance imaging (MRI) criteria of diffuse and focal phenotypes of adenomyosis before and after pregnancy?

Design: A retrospective, monocentric, observational study in a single academic tertiary referral centre for endometriosis diagnosis and management. Women were followed for symptomatic adenomyosis, and without a prior history of surgery who give birth after 24+0 weeks. For each patient, pelvic MRI pre- and post-pregnancy was performed by two experienced radiologists with the same image acquisition protocol.

Fertility preservation in women with benign gynaecological conditions.

Although a wealth of data has been published regarding fertility preservation (FP) in women with malignant diseases who receive gonadotoxic treatment, the role of FP in non-malignant conditions has been studied to a much lesser extent. These include benign haematological, autoimmune, and genetic disorders, as well as a multitude of benign gynaecological conditions (BGCs) that may compromise ovarian reserve and/or reproductive potential due to pathogenic mechanisms or as a result of medical or surgical treatments. Alongside accumulating data that document the reproductive potential of cryopreserved oocytes and ovarian tissue, there is potential interest in FP for women with BGCs at risk of infertility; however, there are currently insufficient data about FP in women with BGCs to develop guidelines for clinical practice.

The time has come for harmonized international ART registration.

For more than two decades, the European IVF-Monitoring Consortium has collected data on IVF in Europe with the aim of monitoring the quality and safety of assisted reproductive technology (ART) treatments, to ensure the highest performance with the lowest risk for patients and their offspring. Likewise, the Society for Assisted Reproductive Technology in the USA and the Australia/New Zealand Assisted Reproduction Database collect, process and publish data in their regions. The better the legal framework for ART surveillance, the more complete and reliable are the datasets.

Decrease of dysmenorrhoea with hormonal treatment is a marker of endometriosis severity.

Research Question: Is a decrease in dysmenorrhoea after suppressive hormonal therapy a marker of the endometriosis phenotype and of greater disease severity?

Design: Retrospective observational cohort study conducted in a French university hospital, between January 2004 and December 2019. Non-pregnant women aged younger than 42 years, who tested for dysmenorrhoea relief after suppressive hormonal therapy before surgery, and who had histological confirmation of endometriosis, were included. The comparisons were carried out according to the results of the suppressive hormonal test.