2 results on '"Sabrina Doblas"'
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2. A Preclinical Validation of Iron Oxide Nanoparticles for Treatment of Perianal Fistulizing Crohn's Disease
- Author
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Antoine Cazelles, Maxime K. Collard, Yoann Lalatonne, Sabrina Doblas, Magaly Zappa, Camélia Labiad, Dominique Cazals-Hatem, Léon Maggiori, Xavier Treton, Yves Panis, Ulrich Jarry, Thomas Desvallées, Pierre-Antoine Eliat, Raphaël Pineau, Laurence Motte, Didier Letourneur, Teresa Simon-Yarza, Eric Ogier-Denis, Hôpital Beaujon [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre de recherche sur l'Inflammation (CRI (UMR_S_1149 / ERL_8252 / U1149)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de Recherche Vasculaire Translationnelle (LVTS (UMR_S_1148 / U1148)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité)-Université Sorbonne Paris Nord, Hôpital Avicenne [AP-HP], Biotrial, Biosit : biologie, santé, innovation technologique (SFR UMS CNRS 3480 - INSERM 018), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Plate-forme Rennaise d'Imagerie et Spectroscopie Structurale et Métabolique (PRISM), Université de Rennes (UR)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Nutrition, Métabolismes et Cancer (NuMeCan), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Oncogenesis, Stress, Signaling (OSS), Université de Rennes (UR)-CRLCC Eugène Marquis (CRLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM), CRLCC Eugène Marquis (CRLCC), French National Institute of Health INSERM, Fondation pour la Recherche Medicale [M2R201906008873], INSERM-Transfert CoPoC, Idex Pre-maturation 'Universite Paris 2019', Conseil Regional de Bretagne (SAD 2021), Rennes Metropole (AIS 2021), and Jonchère, Laurent
- Subjects
Male ,[SDV]Life Sciences [q-bio] ,Crohn’s disease ,perianal fistula ,preclinical model ,iron oxide nanoparticles ,fistula treatment ,Catalysis ,Inorganic Chemistry ,Rats, Sprague-Dawley ,Crohn Disease ,Animals ,Rectal Fistula ,Physical and Theoretical Chemistry ,Molecular Biology ,Spectroscopy ,Organic Chemistry ,General Medicine ,Computer Science Applications ,Rats ,[SDV] Life Sciences [q-bio] ,Crohn's disease ,Treatment Outcome ,Quality of Life ,Magnetic Iron Oxide Nanoparticles ,Neoplasm Recurrence, Local - Abstract
International audience; Fistulizing anoperineal lesions are severe complications of Crohn's disease (CD) that affect quality of life with a long-term risk of anal sphincter destruction, incontinence, permanent stoma, and anal cancer. Despite several surgical procedures, they relapse in about two-thirds of patients, mandating innovative treatments. Ultrasmall particles of iron oxide (USPIO) have been described to achieve in vivo rapid healing of deep wounds in the skin and liver of rats thanks to their nanobridging capability that could be adapted to fistula treatment. Our main purpose was to highlight preclinical data with USPIO for the treatment of perianal fistulizing CD. Twenty male Sprague Dawley rats with severe 2,4,6-trinitrobenzenesulfonic acid solution (TNBS)-induced proctitis were operated to generate two perianal fistulas per rat. At day 35, two inflammatory fistulas were obtained per rat and perineal magnetic resonance imaging (MRI) was performed. After a baseline MRI, a fistula tract was randomly drawn and topically treated either with saline or with USPIO for 1 min (n = 17 for each). The rats underwent a perineal MRI on postoperative days (POD) 1, 4, and 7 and were sacrificed for pathological examination. The primary outcome was the filling or closure of the fistula tract, including the external or internal openings. USPIO treatment allowed the closure and/or filling of all the treated fistulas from its application until POD 7 in comparison with the control fistulas (23%). The treatment with USPIO was safe, permanently closed the fistula along its entire length, including internal and external orifices, and paved new avenues for the treatment of perianal fistulizing Crohn's disease.
- Published
- 2022
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