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Abstract Title:

A comparative study of curcumin-loaded lipid-based nanocarriers in the treatment of inflammatory bowel disease.

Abstract Source:

Colloids Surf B Biointerfaces. 2016 Jul 1 ;143:327-335. Epub 2016 Mar 16. PMID: 27022873

Abstract Author(s):

Ana Beloqui, Patrick B Memvanga, Régis Coco, Sonia Reimondez-Troitiño, Mireille Alhouayek, Giulio G Muccioli, María José Alonso, Noemi Csaba, María de la Fuente, Véronique Préat

Article Affiliation:

Ana Beloqui

Abstract:

Selective drug delivery to inflamed tissues is of widespread interest for the treatment of inflammatory bowel disease (IBD). Because a lack of physiological lipids has been described in patients suffering IBD, and some lipids present immunomodulatory properties, we hypothesize that the combination of lipids and anti-inflammatory drugs together within a nanocarrier may be a valuable strategy for overcoming IBD. In the present study, we investigated and compared the in vitro and in vivo efficacy of three lipid-based nanocarriers containing curcumin (CC) as an anti-inflammatory drug for treating IBD in a murine DSS-induced colitis model. These nanocarriers included self-nanoemulsifying drug delivery systems (SNEDDS), nanostructured lipid carriers (NLC) and lipid core-shell protamine nanocapsules (NC). In vitro, a 30-fold higher CC permeability across Caco-2 cell monolayers was obtained using NC compared to SNEDDS (NC>SNEDDS>NLC and CC suspension). The CC SNEDDS and CC NLC but not the CC NC or CC suspension significantly reduced TNF-α secretion by LPS-activated macrophages (J774 cells). In vivo, only CC NLC were able to significantly decrease neutrophil infiltration and TNF-α secretion and, thus, colonic inflammation. Our results show that a higher CC permeability does not correlate with a higher efficacy in IBD treatment, which suggests that lipidic nanocarriers exhibiting increased CC retention at the intestinal site, rather than increased CC permeability are efficient treatments of IBD.

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