Publications by authors named "Gelot A"

Purpose: Cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) are expected to be synergistic with intraperitoneal (IP) immunotherapy by increasing tumor antigen expression and mutational load. We assessed the feasibility and safety of IP nivolumab following complete CRS and HIPEC in pretreated patients with recurrent ovarian cancer (ClinicalTrials.gov identifier: NCT03959761).

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Purpose: Breast cancer (BC) characteristics are known to influence patients survival. Social differences have been reported by previous studies for those characteristics but questions persist because of inconsistent conclusions. We aimed to investigate the impact of education on BC stage, grade, and hormone receptor (HR) status, while adjusting for potential confounders including a broad set of health behaviors, anthropometric measures, and reproductive factors.

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Microglia (MG), the brain-resident macrophages, play major roles in health and disease via a diversity of cellular states. While embryonic MG display a large heterogeneity of cellular distribution and transcriptomic states, their functions remain poorly characterized. Here, we uncovered a role for MG in the maintenance of structural integrity at two fetal cortical boundaries.

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Objectives: Active smoking and the A blood group are associated with pancreatic adenocarcinoma (PC) risk. However, potential interactions between those risk factors and the role of passive smoking have been little investigated. We aimed to explore specific and joint associations of passive and active smoking, and effect modification by the ABO blood group in French women.

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Background: Dioxins are a family of chemical molecules that are chlorinated, lipophilic, and bio-accumulative. They are thought to enhance the risk of non-lymphoma Hodgkin's due to their known carcinogenic properties (NHL). This is the first epidemiological research to investigate the relationship between repeated emissions of airborne dioxin exposure and the risk of NHL.

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Objective: Several studies suggest an association between endometriosis and the risk of cardio-metabolic diseases. This study aimed to prospectively evaluate the association between history of endometriosis and incident type 2 diabetes.

Study Design: E3N is a prospective cohort of 98,995 French women aged 40-65 years at inclusion.

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Article Synopsis
  • * Most variants of the SMARCC1 gene are loss of function (LoF) and typically passed down from unaffected parents, suggesting incomplete penetrance.
  • * This research presents the first antenatal cases of SMARCC1 LoF variants found through Whole Genome Sequencing, highlighting the challenges in diagnosis and genetic counseling due to its inheritance patterns.
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Sphingolipids function as membrane constituents and signaling molecules, with crucial roles in human diseases, from neurodevelopmental disorders to cancer, best exemplified in the inborn errors of sphingolipid metabolism in lysosomes. The dihydroceramide desaturase Δ4-dihydroceramide desaturase 1 (DEGS1) acts in the last step of a sector of the sphingolipid pathway, de novo ceramide biosynthesis. Defects in DEGS1 cause the recently described hypomyelinating leukodystrophy-18 (HLD18) (OMIM #618404).

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Background: Inflammation is implicated in breast cancer development, and diet is one of the modifiable risk factors involved in the regulation of chronic inflammation. Previous studies on the association between breast cancer risk and Dietary Inflammatory Indexes (DII) derived from food frequency questionnaires and data on inflammatory potential of dietary components have reported inconsistent results.

Objective: To investigate the association between the DII and the risk of breast cancer using data from a large population-based cohort study.

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Heterozygous pathogenic variants in DNM1 cause developmental and epileptic encephalopathy (DEE) as a result of a dominant-negative mechanism impeding vesicular fission. Thus far, pathogenic variants in DNM1 have been studied with a canonical transcript that includes the alternatively spliced exon 10b. However, after performing RNA sequencing in 39 pediatric brain samples, we find the primary transcript expressed in the brain includes the downstream exon 10a instead.

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Article Synopsis
  • Scientists studied the brain's tiny blood vessels in mice at two different ages, 5 days old and 15 days old.
  • They found that different types of cells in the blood vessels grow and change in specific ways as the mice get older.
  • They discovered that the network of smooth muscle cells (which help control blood flow) gets bigger and works better at 15 days, which is important for making sure the brain gets enough blood.
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Background: Chronic abdominal pain is the most common cause for gastroenterology consultation and is frequently associated with functional gastrointestinal disorders including irritable bowel syndrome and inflammatory bowel disease. These disorders present similar brain/gut/microbiota trialogue alterations, associated with abnormal intestinal permeability, intestinal dysbiosis and colonic hypersensitivity (CHS). Intestinal dysbiosis can alter colon homeostasis leading to abnormal activation of the innate immunity that promotes CHS, perhaps involving the toll-like receptors (TLRs), which play a central role in innate immunity.

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Subacute sclerosing panencephalitis, a late complication of measles, is still present during epidemics of this disease due to insufficient vaccination. After a historical review, the importance of the diagnostic criteria and the pathophysiology of SSEP are discussed. Numerous studies on the parameters of innate immunity and interferon responses tend to show a decrease in the activity of cellular immunity.

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  • Pontocerebellar hypoplasias (PCHs) are genetic disorders that cause underdevelopment of the cerebellum and brainstem, leading to severe motor and cognitive issues in affected infants.
  • Four families with children exhibiting significant brainstem dysfunction were studied, uncovering different mutations in the PRDM13 gene linked to these developmental challenges and marked brain abnormalities observed through MRI and pathology.
  • PRDM13, previously unassociated with hindbrain development, is crucial for the specification of certain neurons, and its disruption in animal models shows a direct link to the reduction of essential brain structures, indicating mutations in this gene could be responsible for many cases of PCH.
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Objective: To assess the relationships between lifetime female hormonal exposures and the risk of incident RA in postmenopausal women.

Methods: E3N is an ongoing French prospective cohort of 98,995 women since 1990 aged 40-65 years at enrolment. Data on reproductive/hormonal factors and treatments were regularly recorded.

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Objective: The association between passive smoking exposure in childhood or in adulthood, and the risk of rheumatoid arthritis (RA) has been incompletely investigated. We aimed to assess the relationship between exposure to passive smoking and the risk of incident RA in a French prospective cohort of healthy women.

Methods: The E3N Study () is a French prospective cohort of women included in 1990.

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Background: Variants of COL4A1/COL4A2 genes have been reported in fetal intracranial hemorrhage (ICH) cases but their prevalence and characteristics have not been established in a large series of fetuses. Fetal neonatal alloimmune thrombocytopenia is a major acquired ICH factor but the prevalence and characteristics of inherited platelet disorder (IPD) gene variants leading to thrombocytopenia are unknown. Herein, we screened COL4A1/COL4A2 and IPD genes in a large series of ICH fetuses.

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Absence of the astrocyte-specific membrane protein MLC1 is responsible for megalencephalic leukoencephalopathy with subcortical cysts (MLC), a rare type of leukodystrophy characterized by early-onset macrocephaly and progressive white matter vacuolation that lead to ataxia, spasticity, and cognitive decline. During postnatal development (from P5 to P15 in the mouse), MLC1 forms a membrane complex with GlialCAM (another astrocytic transmembrane protein) at the junctions between perivascular astrocytic processes. Perivascular astrocytic processes along with blood vessels form the gliovascular unit.

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Objectives: While it has been reported that women with uterine fibroids or endometriosis are commonly overweight and hypertensive, the association between non-malignant gynecological diseases and the risk of hypertension has been little studied prospectively. The aim of this study was to investigate in a large French cohort of women whether a history of hysterectomy, uterine fibroids, or endometriosis was prospectively related to an increased risk of incident hypertension.

Study Design: We analyzed 50,286 women from the E3N cohort who were free of hypertension at baseline, with a median follow-up of 16.

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Article Synopsis
  • Researchers studied how a gene called NEUROD2 affects brain development in mice and found that when this gene is missing, brain cells don't develop properly.
  • Mice without NEUROD2 showed issues like being overly active, having trouble interacting with others, and even having seizures.
  • The study also linked problems in these mice to human cases of developmental disorders, like autism, suggesting that NEUROD2 is important for normal brain function and development.
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Background: Subacute sclerosing panencephalitis (SSPE) is a rare, non-treatable and fatal neurological complication of measles, still present due to the return of the epidemic linked to the loosening of vaccination policies. Its mechanism remains unexplained.

Objective: The main objective was to investigate explanatory variables relating to the risk of developing SSPE and its pathophysiology.

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