Publications by authors named "Margot Bucau"

Article Synopsis
  • * A study involving 30 Togolese female sex workers analyzed 156 HPV genome sequences from cervical and anal swabs, revealing identical infections but varying genetic diversity across HPV types and sites.
  • * Low-risk HPVs showed more mutations induced by APOBEC3 in the E4 and E6 genes compared to high-risk HPVs, which had fewer mutations, suggesting different cancer risk potentials among HPV types.
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Article Synopsis
  • Ovarian neuroendocrine tumors (NETs) are rare tumors often found in mature teratomas, but there hasn’t been a recent study looking at their characteristics using new tumor markers.
  • This study analyzed 34 unilateral NETs, identifying four distinct immunophenotypic profiles and determining the tumors' grade and proliferation rates with specific markers.
  • The findings indicate that the most common NET type shows an intestinal phenotype, suggesting a neuroendocrine precursor in the teratoma and emphasizing that these tumors shouldn't be classified based on the surrounding teratoma components.
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Introduction: Antiphospholipid syndrome (APS) is a cause of pregnancy morbidity. We aim to determine the frequency of criteria and non-criteria anti-phospholipid (aPL) autoantibodies in patients admitted for unexplained fetal death (UFD), pre-eclampsia (PE) and/or fetal growth restriction (FGR).

Methods: All consecutive patients with UFD, PE and/or FGR followed in the department of Obstetrics, Bichat Hospital, University of Paris, Paris, between January 2019 and December 2021 were screened.

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Study Question: What are the pregnancy and obstetric outcomes in women with atypical hyperplasia (AH) or early-stage endometrial cancer (EC) managed conservatively for fertility preservation?

Summary Answer: The study found a live birth rate of 62% in patients with AH or EC after conservative treatment, with higher level of labour induction, caesarean section, and post-partum haemorrhage.

What Is Known Already: Fertility-sparing treatment is a viable option for women with AH or EC during childbearing years, but the outcomes of such treatments, especially regarding pregnancy and obstetrics, need further exploration.

Study Design, Size, Duration: This retrospective cohort study analysed data from January 2010 to October 2022, involving 269 patients from the French national register of patients with fertility-sparing management of AH/EC.

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Objective: To evaluate satisfaction with information, treatment, and decision regret during management to preserve fertility for atypical hyperplasia (AH) or endometrial cancer (EC).

Methods: A cohort study with standardized management using chlormadinone acetate was established through a national referral centre between January 2013 and November 2019. During this period, a questionnaire was given to 136 patients aged 19 to 43 years who were followed for fertility preservation for AH or EC.

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Analyses of large transcriptomics data sets of muscle-invasive bladder cancer (MIBC) have led to a consensus classification. Molecular subtypes of upper tract urothelial carcinomas (UTUCs) are less known. Our objective was to determine the relevance of the consensus classification in UTUCs by characterizing a novel cohort of surgically treated ≥pT1 tumors.

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Women with systemic lupus erythematosus (SLE), especially when exposed to immunosuppressive drugs, are at higher risk of human papillomavirus (HPV)-related cervical cancer. A recent study has shown that cervical cancer screening (CCS) coverage is worryingly low in this population..

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CONSERVATIVE TREATMENTS FOR ENDOMETRIAL CANCER Treatment for early endometrial cancer remains based on hysterectomy. However, in patients of reproductive age with a pregnancy desire, conservative alternative may be considered in case of atypical hyperplasia or endometrial endometrial adenocarcinoma without myometrial invasion. The conservative treatment consists in proposing a protocol preserving the uterus, based on an antigonadotropic treatment (oral or intrauterine progestin, GnRH agonist) allowing a regression of the endometrial lesion.

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Breast metastasis is a rare phenomenon (0.2-1.3%) compared to primary breast lesions.

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HSV-2 antiviral resistance mainly occurs in immunocompromised patients and especially in HIV-positive individuals receiving long-term antiviral treatment. Those situations can be challenging as few alternatives are available for HSV infection management. To describe clinical and virological significance of two novel potential HSV-2 resistance mutations after treating an obese patient with a pseudotumoral genital HSV-related lesion.

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During pregnancy early third trimester immunization against SARS‐CoV‐2 confers optimal immunity to the neonate.

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Background Data: Vulvar carcinoma is a rare disease accounting for 3%-5% of all gynaecological cancers. Although surgery is the standard treatment at an early stage, the outcomes are highly correlated with clear resection margins. Therefore, surgical defects can be important and require reconstruction.

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Objective: To confirm that the efficiency of the use of chlormadinone acetate for 6 months to obtain remission of atypical hyperplasia or endometrial carcinoma is comparable to that of the use of other fertility-sparing treatments.

Method: The present study is based on the PREFERE prospective registry. All the patients received 3 or 6 months of chlormadinone acetate and were evaluated by hysteroscopic resection and pipelle sampling every 3 months.

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Introduction: Studies have shown that the PD-1/PD-L1 immunomodulatory pathway slows down anti-tumor immunity in a number of cancers. The description of the expression of these molecules has never been performed in anal low-grade/high grade squamous intra-epithelial lesions (LSIL/HSIL respectively).

Materials And Methods: Patients followed in the AIN3 cohort were routinely sampled.

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Background: The aim of this study was to investigate the presence of minority variants (MVs) in high-risk human papillomavirus (HPV) types (HPV-16, -52, and -58) from cervical and anal smears.

Methods: Whole HPV genome ultra-deep sequencing (UDS) was performed on cervical and anal smears collected during patient follow-up. Bioinformatics analyses were performed using Bowtie2 (Geneious).

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Background: 18F-FDG-PET scan positivity correlates with poor prognosis in neuroendocrine neoplasms (NEN). Glucose transporter 1 (GLUT1) and carbonic anhydrase 9 (CA9) are markers of aggressiveness in tumors. Together with von Hippel-Lindau protein (pVHL), they are involved in tumor cell metabolism via the hypoxia-inducible factor signaling pathway.

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Study Objective: To compare the accuracies of magnetic resonance imaging (MRI) and rectal endoscopic sonography (RES) in the prediction of the infiltration depth of colorectal endometriosis.

Design: A retrospective cohort study (Canadian Task Force classification II-2).

Setting: A university teaching hospital.

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Background: Hereditary hemorrhagic telangiectasia (HHT), also known as Osler-Rendu-Weber disease, is a rare genetic disorder characterized by widespread telangiectasia and vascular malformations involving the liver in most of the cases. The consequences of this pathologically underlying parenchyma on liver resection have been poorly described.

Methods: More than 2,000 liver resections were performed at our institution over a 14-year period, whereby 2 major hepatectomies for malignancy were performed on patients with HHT with liver involvement.

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