Development and characterization of a new endoscopic drug-eluting platform with proven efficacy in acute and chronic experimental colitis
Bon Romero, Ignacio (Institut Germans Trias i Pujol. Hospital Universitari Germans Trias i Pujol)
Cano-Sarabia, Mary (Institut Català de Nanociència i Nanotecnologia)
De la Ossa, Napoleon (Hospital Universitari General de Catalunya)
Bartolí Solé, Ramon (Institut Germans Trias i Pujol)
Lorenzo-Zúñiga, Vicente (Institut Germans Trias i Pujol)

Date:	2020
Abstract:	Background and Aims: mucosal lesions refractory to biological treatments represent unmet needs in patients with inflammatory bowel disease (IBD) that require new treatment modalities. We developed and characterized a new endoscopic drug-eluting hydrogel (CoverGel) with proven efficacy in acute and chronic experimental colitis (EC) in rats. - Methods: coverGel was developed based on appropriate rheological, drug release, gelation, structural, and degradation property capacities to allow endoscopic application. Experimental colitis (EC) was induced by TNBS application in rats. In acute EC 40, rats were randomized in five groups (eight each): Sham, Control, CoverGel, CoverGel + Infliximab (IFX) and CoverGel + Vedolizumab (VDZ). In chronic EC, 12 rats were randomized in two groups (six each): IFX s. c. and CoverGel + IFX. Endoscopic, histological, and blood test were performed during follow-up to evaluate clinical success. Antibodies to IFX (ATIs) were evaluated in chronic EC animal study. - Results: CoverGel is a biocompatible and bioadhesive reverse thermosensitive gelation hydrogel with a macroporous structure and drug release capacity. In acute EC animals treated with CoverGel + IFX or CoverGel + VDZ showed significantly clinical success (weight recovery, mucosal restoration, and bacterial translocation) as compared with controls and animals without a bioactive drug. In a chronic EC animal study, clinical efficacy was comparable in both groups. Levels of ATIs were significantly lower in animals treated with CoverGel + IFX vs. IFX s. c. (0. 90 ± 0. 06 μg/mL-c vs. 1. 97 ± 0. 66 μg/mL-c, p = 0. 0025). - Conclusions: CoverGel is an endoscopic vehicle to locally deliver biological drugs with proven efficacy in acute and chronic EC in rats and induce less immunogenicity reaction.
Grants:	Instituto de Salud Carlos III PI16/01928
Note:	Aquest article té una correcció a 10.3389/fmed.2021.785148
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Drug-eluting ; Experimental colitis ; Endoscopic shielding technique ; Hydrogel ; Endoscopy
Published in:	Frontiers in Medicine, Vol. 7 (August 2020) , ISSN 2296-858X

Correcció de l'article: https://ddd.uab.cat/record/264924
DOI: 10.3389/fmed.2020.00415
PMID: 32974357

14 p, 2.2 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Health sciences and biosciences > Institut d'Investigació en Ciencies de la Salut Germans Trias i Pujol (IGTP)
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles