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Moussaddaq AS, Brochard C, Palard-Novello X, Garin E, Wallenhorst T, Le Balc’h E, Merlini L’heritier A, Grainville T, Siproudhis L, Lièvre A. Incidental anal 18fluorodeoxyglucose uptake: Should we further examine the patient? World J Clin Cases 2020; 8:3679-3690. [PMID: 32953844 PMCID: PMC7479548 DOI: 10.12998/wjcc.v8.i17.3679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 05/15/2020] [Accepted: 08/01/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND There are no studies on incidental anal 18F-fluorodeoxyglucose (18FDG) uptake.
AIM To assess the rate and aetiologies of incidental anal 18FDG uptake and to evaluate the correlation between 18FDG positron-emission tomography/computed tomography (PET/CT) parameters and the diagnosis of an anorectal disease.
METHODS The data from patients with incidental anal 18FDG uptake were retrospectively analysed. Patients who underwent anorectal examinations were identified and compared to those who did not undergo examinations. Patients who were offered treatment were then identified and compared to those who did not receive treatment.
RESULTS Among the 43020 18FDG PET/CT scans performed, 197 18FDG PET/CT scans of 146 patients (0.45%) reported incidental anal uptake. Among the 134 patients included, 48 (35.8%) patients underwent anorectal examinations, and anorectal diseases were diagnosed in 33 (69.0%) of these patients and treated in 18/48 (37.5%) patients. Among the examined patients, those with a pathology requiring treatment had significantly smaller metabolic volumes (MV) 30 and MV41 values and higher maximal and mean standardized uptake value measurements than those who did not require treatment.
CONCLUSION Incidental anal 18FDG uptake is rare, but a reliable anorectal diagnosis is commonly obtained when an anorectal examination is performed. The diagnosis of an anorectal disease induces treatment in more than one-third of the patients. These data should encourage practitioners to explore incidental anal 18FDG uptake systematically.
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Affiliation(s)
- Anne-Sophie Moussaddaq
- Department of Gastroenterology, University Hospital of Rennes, Pontchaillou, Rennes 35000, France
| | - Charlène Brochard
- Department of Gastroenterology, University Hospital of Rennes, Pontchaillou, Rennes 35000, France
- Inphy CIC 1414 University Hospital of Rennes, Pontchaillou, Rennes 35000, France
| | - Xavier Palard-Novello
- Department of Nuclear Medicine, Cancer Institute Eugène Marquis, Rennes 35000, France
| | - Etienne Garin
- Department of Nuclear Medicine, Cancer Institute Eugène Marquis, Rennes 35000, France
- Laboratoire Traitement du Signal et de l'Image-UMR1099, University of Rennes, Inserm, Rennes 35000, France
| | - Timothée Wallenhorst
- Department of Gastroenterology, University Hospital of Rennes, Pontchaillou, Rennes 35000, France
| | - Eric Le Balc’h
- Department of Gastroenterology, University Hospital of Rennes, Pontchaillou, Rennes 35000, France
| | | | - Thomas Grainville
- Department of Gastroenterology, University Hospital of Rennes, Pontchaillou, Rennes 35000, France
| | - Laurent Siproudhis
- Department of Gastroenterology, University Hospital of Rennes, Pontchaillou, Rennes 35000, France
- Inphy CIC 1414 University Hospital of Rennes, Pontchaillou, Rennes 35000, France
| | - Astrid Lièvre
- Department of Gastroenterology, University Hospital of Rennes, Pontchaillou, Rennes 35000, France
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Landman C, Grill JP, Mallet JM, Marteau P, Humbert L, Le Balc’h E, Maubert MA, Perez K, Chaara W, Brot L, Beaugerie L, Sokol H, Thenet S, Rainteau D, Seksik P, Quévrain E. Inter-kingdom effect on epithelial cells of the N-Acyl homoserine lactone 3-oxo-C12:2, a major quorum-sensing molecule from gut microbiota. PLoS One 2018; 13:e0202587. [PMID: 30157234 PMCID: PMC6114859 DOI: 10.1371/journal.pone.0202587] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 08/06/2018] [Indexed: 02/06/2023] Open
Abstract
Background and aims N-acyl homoserine lactones (AHLs), which are autoinducer quorum-sensing molecules involved in the bacterial communication network, also interact with eukaryotic cells. Searching for these molecules in the context of inflammatory bowel disease (IBD) is appealing. The aims of our study were to look for AHL molecules in faecal samples from healthy subjects (HS) and IBD patients to correlate AHL profiles with the microbiome and investigate the effect of AHLs of interest on epithelial cells. Methods Using mass spectrometry, we characterised AHL profiles in faecal samples from HS (n = 26) and IBD patients in remission (n = 24) and in flare (n = 25) and correlated the presence of AHLs of interest with gut microbiota composition obtained by real-time qPCR and 16S sequencing. We synthesised AHLs of interest to test the inflammatory response after IL1β stimulation and paracellular permeability on Caco-2 cells. Results We observed 14 different AHLs, among which one was prominent. This AHL corresponded to 3-oxo-C12:2 and was found significantly less frequently in IBD patients in flare (16%) and in remission (37.5%) versus HS (65.4%) (p = 0.001). The presence of 3-oxo-C12:2 was associated with significantly higher counts of Firmicutes, especially Faecalbacterium prausnitzii, and lower counts of Escherichia coli. In vitro, 3-oxo-C12:2 exerted an anti-inflammatory effect on Caco-2 cells. Interestingly, although 3-oxo-C12, the well-known AHL from Pseudomonas aeruginosa, increased paracellular permeability, 3-oxo-C12:2 did not. Conclusions We identified AHLs in the human gut microbiota and discovered a new and prominent AHL, 3-oxo-C12:2, which correlates with normobiosis and exerts a protective effect on gut epithelial cells.
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Affiliation(s)
- Cécilia Landman
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Jean-Pierre Grill
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Jean-Maurice Mallet
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Philippe Marteau
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Lydie Humbert
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Eric Le Balc’h
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Marie-Anne Maubert
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Kevin Perez
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Wahiba Chaara
- Sorbonne Universités, INSERM, Immunology-Immunopathology-Immunotherapy (i3), Paris, France
| | - Loic Brot
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Laurent Beaugerie
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Harry Sokol
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Sophie Thenet
- Sorbonne Universités, Centre de Recherche des Cordeliers, PSL University, EPHE, Paris, France
| | - Dominique Rainteau
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
| | - Philippe Seksik
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
- * E-mail:
| | - Elodie Quévrain
- Sorbonne Université, École normale supérieure, PSL University, CNRS, INSERM, APHP, Hôpital Saint-Antoine, Laboratoire des biomolécules, LBM, Paris, France
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