944 results match your criteria: "Institute of Reproductive and Developmental Biology[Affiliation]"

Lactobacillus crispatus S-layer proteins modulate innate immune response and inflammation in the lower female reproductive tract.

Nat Commun

December 2024

Imperial College Parturition Research Group, Institute of Reproductive and Developmental Biology, Department of Metabolism Digestion and Reproduction, Imperial College London, London, UK.

Lactobacillus species dominance of the vaginal microbiome is a hallmark of vaginal health. Pathogen displacement of vaginal lactobacilli drives innate immune activation and mucosal barrier disruption, increasing the risks of STI acquisition and, in pregnancy, of preterm birth. We describe differential TLR mediated activation of the proinflammatory transcription factor NF-κB by vaginal pathogens and commensals.

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This primigravid pregnant woman had a new diagnosis of primary biliary cholangitis (PBC) that was treated with a combination of ursodeoxycholic acid (UDCA) and bezafibrate. Pregnancy may unmask underlying chronic hepatic disorders in susceptible women and, in some cases, the associated abnormalities of liver function or increased serum bile acids (hypercholanaemia) can result in significant fetal and maternal risk. Maternal pruritus, with associated sleep deprivation, may cause considerable distress.

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Preterm-birth-prevention with Lactobacillus Crispatus oral probiotics: Protocol for a double blinded randomised placebo-controlled trial (the PrePOP study).

Contemp Clin Trials

December 2024

UCD Perinatal Research Centre, UCD School of Medicine, University College Dublin, National Maternity Hospital, Dublin 2, Ireland; National Maternity Hospital, Dublin 2, Ireland. Electronic address:

Introduction: Effective spontaneous preterm birth (sPTB) prevention is an urgent unmet clinical need. Vaginal depletion of Lactobacillus crispatus is linked to sPTB. This trial will investigate impact of an oral Lactobacillus spp.

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Article Synopsis
  • The study investigates the expression and functionality of follicle-stimulating hormone receptor (FSHR) in human myometrium (uterine muscle) and adipose tissue (fat) during both non-pregnant and pregnant states, as well as its connection to uterine activity and fat thermogenesis.
  • Using various methods to evaluate FSHR expression and treatment effects, the researchers found no FSHR expression in these tissues, contradicting prior studies.
  • The results indicate that FSHR signaling does not play a role in regulating uterine contraction or influencing adipose tissue activities, casting doubt on previous assumptions about FSHR's functionality in these areas
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Objective: Establish whether pregnancies complicated by gestational diabetes mellitus (GDM) are associated with a fetal cardiac phenotype that predisposes to arrhythmia; utilising measurements derived from non-invasive abdominal fetal ECG.

Design: Prospective observational study.

Setting: Three tertiary obstetric units, United Kingdom.

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Spatial-temporal regulation of the prostanoid receptor EP2 co-ordinates PGE2-mediated cAMP signaling in decidualizing human endometrium.

iScience

November 2024

Institute of Reproductive and Developmental Biology, Department of Metabolism, Digestion and Reproduction, Imperial College London, London W12 0NN, UK.

Decidualization denotes the differentiation of endometrial stromal cells into specialized decidual cells, essential for embryo implantation and pregnancy. The process requires coordination of progesterone and cAMP signaling, which converge on downstream transcription factors. PGE2 and relaxin, acting, respectively, through Gαs-coupled GPCRs EP2 and RXFP1, are putative candidates for generating cAMP in differentiating stromal cells.

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The Ovarian Cancer Retrospective European (O'CaRE) study assessed the cumulative impact of high-risk factors on progression-free survival (PFS) and overall survival (OS) following first-line treatment in patients diagnosed with advanced ovarian cancer. Medical records were collected from five European countries (2014 and 2015). Patients were grouped by number of high-risk factors: stage IV diagnosis, no known , interval debulking surgery or no surgery, or visible residual disease.

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The role of nutrient sensing dysregulation in anorexia of ageing: The little we know and the much we don't.

Appetite

December 2024

School of Biomedical, Nutritional, and Sport Science, Faculty of Medical Sciences, Newcastle University, Newcastle Upon Tyne, NE2 4HH, UK; Human Nutrition and Exercise Research Centre, Population Health Sciences Institute, Newcastle University, Newcastle Upon Tyne, NE2 4HH, UK. Electronic address:

The age-related decline in appetite and food intake - termed "anorexia of ageing" - is implicated in undernutrition in later life and hence provides a public health challenge for our ageing population. Eating behaviour is controlled, in part, by homeostatic mechanisms which sense nutrient status and provide feedback to appetite control regions of the brain. Such feedback signals, propagated by episodic gut hormones, are dysregulated in some older adults.

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Nausea and vomiting in pregnancy: a cross-sectional study of community pharmacists in the UK.

Int J Pharm Pract

October 2024

School of Population Health, Royal College of Surgeons in Ireland, Beaux Lane House, Lower Mercer Street, Dublin 2, D02 DH60, Ireland.

Objectives: To assess the content and frequency of advice community pharmacists (CPs) provide to pregnant women with nausea and vomiting, their confidence in providing advice, and their knowledge of the safety of medication used to manage the condition.

Methods: An online questionnaire of closed- and open-ended questions was distributed to CPs in the UK in May 2023. Closed-ended questions were analysed quantitatively, and conventional content analysis was utilised for open-ended responses.

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Unlabelled: The vaginal microbiome is a key player in the etiology of spontaneous preterm birth. This study aimed to illustrate maternal environmental factors associated with vaginal microbiota composition and function in pregnancy. Women in healthy pregnancy had vaginal microbial sampling from the posterior vaginal fornix performed at 16 weeks gestation.

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Article Synopsis
  • The study aimed to investigate the link between premenopausal hyperandrogenaemia (HA) and the risk of hypertension and cardiovascular diseases (CVDs) in a cohort of 5,889 women.
  • The findings showed that higher levels of testosterone and free androgen index were linked to increased blood pressure and a higher likelihood of hypertension at ages 31 and 46, as well as an increased risk of CVD events over 22 years, particularly before adjusting for body mass index (BMI).
  • Despite the initial associations, the significance of the results diminished when accounting for BMI, highlighting the need for further research with a more diverse population and longer follow-up to better understand these relationships.*
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VMAP: Vaginal Microbiome Atlas during Pregnancy.

JAMIA Open

October 2024

Bakar Computational Health Sciences Institute, University of California San Francisco, San Francisco, CA 94143, United States.

Objectives: To enable interactive visualization of the vaginal microbiome across the pregnancy and facilitate discovery of novel insights and generation of new hypotheses.

Material And Methods: Vaginal Microbiome Atlas during Pregnancy (VMAP) was created with R shiny to generate visualizations of structured vaginal microbiome data from multiple studies.

Results: VMAP (http://vmapapp.

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Quantitative proteomics reveals differential extracellular vesicle cargo from M1 and M2 monocyte-derived human macrophages.

bioRxiv

September 2024

Institute of Reproductive and Developmental Biology, Department of Metabolism, Digestion, and Reproduction, Imperial College London, W12 0HS, UK.

Extracellular vesicles (EVs) mediate intercellular communication by carrying molecular cargo that facilitate diverse physiological processes. Macrophages, playing central roles in immune responses, release EVs that modulate various cellular functions. Given the distinct roles of M1 and M2 macrophage states, understanding the proteomic profiles of their EVs is important for elucidation of EV-mediated signalling and identifying potential biomarkers for diseases involving macrophage polarisation.

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Coronavirus disease 2019 (COVID-19) has affected not only individual lives but also the world and global systems, both natural and human-made. Besides millions of deaths and environmental challenges, the rapid spread of the infection and its very high socioeconomic impact have affected healthcare, economic status and wealth, and mental health across the globe. To better appreciate the pandemic's influence, multidisciplinary and interdisciplinary approaches are needed.

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Food-gene interaction has been identified as a leading risk factor for inflammatory bowel disease (IBD) and colorectal cancer (CRC). Accordingly, nutrigenomics emerges as a new approach to identify biomarkers and therapeutic targets for these two strongly associated gastrointestinal diseases. Recent studies in stem cell biology have further shown that diet and nutrition signal to intestinal stem cells (ISC) by altering nutrient-sensing transcriptional activities, thereby influencing barrier integrity and susceptibility to inflammation and tumorigenesis.

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Large-scale exome array summary statistics resources for glycemic traits to aid effector gene prioritization.

Wellcome Open Res

October 2023

MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Institute of Metabolic Science, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK.

Article Synopsis
  • Genome-wide association studies have found numerous genetic loci linked to glycemic traits, but connecting these loci to specific genes and biological pathways remains a challenge.
  • Researchers conducted meta-analyses of exome-array studies across four glycemic traits, analyzing data from over 144,000 participants, which led to the identification of coding variant associations in more than 60 genes.
  • The study revealed significant pathways related to insulin secretion, zinc transport, and fatty acid metabolism, enhancing understanding of glycemic regulation and making data available for further research.
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Article Synopsis
  • Digital vaginal examination (DVE) is the standard method for checking labor progress, but it can be painful and subjective, with variability in results; this study aims to compare DVE to intrapartum transperineal ultrasound (TPUS).
  • Conducted at a London maternity unit, the study involved nulliparous women in active labor, where TPUS measurements were taken after DVE, allowing for comparisons between the two methods. The study incorporated repeated ultrasound assessments when possible.
  • Out of 206 women, complete data from 110 showed that 34% had no difference between TPUS and DVE measurements, while a mean difference of -0.9 cm was observed, indicating
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Article Synopsis
  • - The first audit of LGBTQ+ inclusivity in UK fertility care reveals significant shortcomings in clinical knowledge and cultural competence, particularly affecting transgender and gender diverse patients.
  • - Despite some efforts to improve inclusivity, systemic barriers like cisheteronormativity and discrimination persist, leaving LGBTQ+ patients under-represented in both research and practice.
  • - A checklist for enhancing LGBTQ+ inclusivity was co-developed with community members, focusing on cultural competence, clinical considerations, and online presence, highlighting the urgent need for better support and understanding in fertility care.
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Article Synopsis
  • The Human Endometrial Cell Atlas (HECA) is a comprehensive single-cell reference atlas derived from 313,527 cells, profiling endometrial samples from 63 women, both with and without endometriosis.
  • HECA not only categorizes known cell types but also identifies new ones, utilizing advanced techniques like spatial transcriptomics and validation through an independent single-nuclei dataset.
  • The findings reveal significant cellular interactions in the endometrium, suggest potential dysregulation of specific cell types in endometriosis, and position HECA as a crucial tool for understanding endometrial health and related disorders.
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The placenta and umbilical cord in prenatal care: Unseen, overlooked and misunderstood.

BJOG

January 2025

Division of Maternal Fetal Medicine, Department of Obstetrics and Gynaecology, Beth Israel Deaconess Medical School, Harvard Medical School, Boston, Massachusetts, USA.

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Zona pellucida 3 (ZP3) expression is classically found in the ZP-layer of the oocytes, lately shown in ovarian and prostate cancer. A successful ZP3 ovarian cancer immunotherapy in transgenic mice suggested its use as an attractive therapeutic target. The biological role of ZP3 in cancer growth and progression is still unknown.

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Association between miRNAs in serum at 10-14 gestational weeks and spontaneous preterm delivery.

Acta Obstet Gynecol Scand

October 2024

Department of Obstetrics and Gynecology, Center of Perinatal Medicine and Health, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Introduction: Preterm delivery (PTD) is the leading cause of death in children under 5 years of age. Cervical shortening detected by ultrasound can be used to predict PTD, but prediction is not perfect, and complementary diagnostic markers are needed. Recently, specific plasma microribonucleic acid (miRNAs) detected in early second trimester were shown to be associated with spontaneous PTD in high-risk women with a singleton pregnancy.

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The post-translational modification (PTM) ADP-ribosylation plays an important role in cell signalling and regulating protein function and has been implicated in the development of multiple diseases, including breast and ovarian cancers. Studying the underlying mechanisms through which this PTM contributes towards disease development, however, has been hampered by the lack of appropriate tools for reliable identification of physiologically relevant ADP-ribosylated proteins in a live-cell environment. Herein, we explore the application of an alkyne-tagged proprobe, 6Yn-ProTide-Ad (6Yn-Pro) as a chemical tool for the identification of intracellular ADP-ribosylated proteins through metabolic labelling.

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Microbial signatures and continuum in endometrial cancer and benign patients.

Microbiome

July 2024

Institute of Reproductive and Developmental Biology, Department of Digestion, Metabolism and Reproduction, Department of Surgery and Cancer, Imperial College Faculty of Medicine, Room 3006, 3rd Floor, Du Cane Road, London, W12 0NN, UK.

Background: Endometrial cancer is a multifactorial disease with inflammatory, metabolic and potentially microbial cues involved in disease pathogenesis. The endometrial cancer microbiome has been poorly characterised so far and studies have often overestimated bacterial biomass due to lack of integration of appropriate contamination controls. There is also a scarcity of evidence on the functionality of microbial microenvironments in endometrial cancer.

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