Publications by authors named "Kolanska K"

Background: Transgender men face reproductive challenges due to the potential impact on fertility of gender-affirming hormone therapy (GAHT) and surgical interventions. Testosterone therapy during "female to male" transition leads to anovulation and amenorrhea. Although these effects are typically reversible upon stopping treatment, the long-term effects of androgens on future fertility and health of potential children remain poorly known.

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Article Synopsis
  • * A study analyzed data from 117 women in same-sex couples and 75 women in heterosexual couples seeking MAR, comparing their profiles and ART outcomes from October 2021 to October 2022.
  • * Results showed no significant differences in age, ovarian reserve, or pregnancy outcomes between the two groups, indicating that women in same-sex couples have similar profiles and ART experiences to those in heterosexual couples following the law's implementation.
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Introduction: Fetal microchimerism could be involved in the regulation of breast cancer oncogenesis. CD34+ cells could be of a particular interest as up to 12% of the CD34+ population in maternal blood are of fetal origin. The aim of this research was to analyze the impact of umbilical cord blood (UCB) CD34+ on MCF-7 and MDA-MB-231 breast cancer cell lines, in order to uncover novel biological mechanisms and suggest novel treatment options for breast cancer.

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Research Question: The legislation allowing unmarried women to undergo medically assisted reproduction (MAR) with sperm donation was adopted in France on August 2, 2021. This major advancement, and its impact on French society, led us to a closer examination of the requests made by unmarried women and the outcomes of ART attempts.

Design: A retrospective single center cohort study was conducted in a fertility center in Paris, France.

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Research Question: Do women with endometriosis undergoing oocyte retrieval for fertility preservation experience the same level of pain as women undergoing oocyte retrieval for IVF?

Design: This retrospective cohort study included 796 cycles in women with endometriosis undergoing oocyte retrieval for fertility preservation (n = 401) or IVF (n = 395) between January 2020 and October 2022. Post-operative pain assessments were compared between the two groups using a numeric rating scale (NRS).

Results: Women in the fertility preservation group were younger (32.

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  • The study investigates the outcomes of pregnancies in women with recurrent pregnancy loss (RPL) who were treated with hydroxychloroquine (HCQ) during early pregnancy, identifying that previous miscarriage count was the primary factor affecting pregnancy success.
  • HCQ is explored as a potential treatment due to its effects on the maternal immune system, which may be linked to unexplained RPL.
  • The study utilized the FALCO registry, which includes women with a history of RPL, to analyze pregnancies while excluding those with certain concurrent treatments, focusing on pregnancy continuation beyond 12 weeks and live births.
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Aim: To assess the benefit of prophylactic abdominal drainage (AD) after colorectal surgery for endometriosis.

Methods: We conducted a retrospective study of 215 patients who underwent colorectal surgery for endometriosis using a mini-invasive approach in our center from February 2019 to July 2023. A propensity score matched (PSM) analysis (1:1 ratio) identified two groups of patients with similar characteristics.

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Objective: The objective of our study was to study the impact of discoid excision for deep endometriosis (DE) with colorectal involvement on fertility outcomes.

Methods: 49 patients with a desire for pregnancy treated with discoid excision for colorectal endometriosis in our endometriosis expert center between January 2015 and August 2020 were selected from our prospectively maintained database. Indications for surgery were either infertility and / or pelvic pain.

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The aim of this study was to analyze postoperative consumption of analgesics during hospitalization following colorectal surgery for endometriosis. We conducted a retrospective study at Tenon University Hospital, Paris, France from February 2019 to December 2021. One hundred sixty-two patients underwent colorectal surgery: eighty-nine (55%) by robotic and seventy-three (45%) by conventional laparoscopy.

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Objectives: We studied a post operative classification of surgical complexity in endometriosis.

Study Design: Retrospective monocentric observational study was conducted between January 2001 to December 2019 and included 764 women with DE that underwent surgery. We retrospectively graded surgical complexity through operative reports according to the ENDOGRADE classification, that grades the surgical complexity of DE in four progressive levels.

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Background: Testicular sperm extraction (TESE) is an essential therapeutic tool for the management of male infertility. However, it is an invasive procedure with a success rate up to 50%. To date, no model based on clinical and laboratory parameters is sufficiently powerful to accurately predict the success of sperm retrieval in TESE.

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Objective: To compare first-line surgery with first-line assisted reproductive techniques (ART) in infertile women with deep infiltrating endometriosis (DIE) without colorectal involvement.

Study Design: A retrospective comparative cohort study with a propensity-score matching analysis, in four tertiary-care referral centers. The population was infertile women with DIE without colorectal involvement.

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FERTILITY PRESERVATION BEFORE OVARIAN MALIGNANCY TREATMENT While most ovarian epithelial malignancies affect postmenopausal women, 12% occur in reproductive age patients. In addition, borderline ovarian tumors and rare non epithelial ovarian tumors are diagnosed in young patients as well. The prognosis of early-stage epithelial tumors, non-epithelial and frontier tumors is good.

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Results from studies reporting the optimal stimulation duration of IVF-ICSI cycles are inconsistent. The aim of this study was to determine whether, in the presence of early ovulation-triggering criteria, prolonged ovarian stimulation modified the chances of a live birth. This cross-sectional study included 312 women presenting triggering criteria beginning from D8 of ovarian stimulation.

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Objective: The objective of our study was to determine the main surgical factors associated with postoperative pains in patients undergoing adnexectomy.

Material And Methods: Patients that underwent adnexectomy in two French Gynecological centers between July, 2018 and March, 2020 were prospectively included and retrospectively analyzed. The main pre and per operative surgical factors were analyzed to assess their impact on immediate postoperative pain.

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Background: Our objective was to evaluate surgical outcomes of robotic compared to conventional laparoscopy for colorectal surgery for endometriosis.

Methods: We conducted a prospective cohort study comparing robotic to conventional laparoscopy for colorectal endometriosis during an 18-month period. We included 61 patients in the robotic group and 61 patients in the conventional laparoscopy group.

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Introduction: The effect of coronavirus disease (COVID-19) on pregnancy outcome in women with sickle cell disease (SCD) is unknown.

Objectives: To analyze the severity of the SARS-CoV-2 infection in pregnant women with SCD and its impact on pregnancy.

Methods: This retrospective cohort study included SCD pregnant women tested positive for COVID-19 between March 2020 - February 2021.

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Introduction: Up to 30% of couples may face secondary infertility. The impact of ectopic pregnancy, spontaneous abortion, pregnancy termination or live birth with caesarean section may impair further fertility in different ways. However, secondary infertility after physiological vaginal life childbirth has been little studied.

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Research Question: Does mild COVID-19 infection affect the ovarian reserve of women undergoing an assisted reproductive technology (ART) protocol?

Design: A prospective observational study was conducted between June and December 2020 at the ART unit of Tenon Hospital, Paris. Women managed at the unit for fertility issues by in-vitro fecundation, intracytoplasmic sperm injection (IVF/ICSI), fertility preservation, frozen embryo transfer or artificial insemination, and with an anti-Müllerian hormone (AMH) test carried out within 12 months preceding ART treatment, were included. All the women underwent a COVID rapid detection test (RDT) and AMH concentrations between those who tested positive (RDT positive) and those who tested negative (RDT negative).

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Villitis of unknown etiology (VUE) is characterized by lympho-histiocytic infiltrates, which are predominant within the villous stroma. VUE can be of low grade i.e.

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(1) Background: Ulipristal acetate (UPA) is a selective progesterone receptor modulator (SPRM) widely used for emergency contraception and mid- to long-term leiomyoma treatment. The aim of this study was to identify modifications of miRNA expression in superficial and basal layers of the human endometrium at the end of the UPA treatment for at least 3 months. (2) Methods: Microarray miRNA analysis of formalin-fixed, paraffin-embedded hysterectomy tissue samples was conducted, followed by an Ingenuity Pathway Analysis.

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Emergency contraception (EC) has evolved since the 1960's to enable a better tolerance. Lower hormone doses, simplified schemes, withdrawal of estrogens have led to a user friendly, over-the-counter available EC. The copper intra-uterine device, requiring health care professionals' intervention, is less accessible.

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The molecular responses to hormonal stimuli in the endometrium are modulated at the transcriptional and post-transcriptional stages. Any imbalance in cellular and molecular endometrial homeostasis may lead to gynecological disorders. MicroRNAs (miRNAs) are involved in a wide variety of physiological mechanisms and their expression patterns in the endometrium are currently attracting a lot of interest.

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Dietary supplementation is commonly used in men with male infertility but its exact role is poorly understood. The aim of this multicenter, randomized, double-blind, placebo-controlled trial was to evaluate the impact of high-dose folic acid supplementation on IVF-ICSI outcomes. 162 couples with male infertility and an indication for IVF-ICSI were included for one IVF-ICSI cycle.

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