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Rifaximin anti-inflammatory activity on bovine endometrium primary cell cultures: a preliminary study.

ABSTRACT: Rifaximin is an unabsorbed oral antibiotic showing anti-inflammatory properties in human pathologies like irritable bowel syndrome and inflammatory bowel disease. In veterinary medicine, rifaximin is primarily used in the treatment of dermatological diseases in all animal species, in therapy and prophylaxis of mastitis in cows and in the treatment of endometritis in cattle and horses. The aim of this preliminary study was to evaluate the anti-inflammatory properties of rifaximin on primary cell cultures from bovine endometrium in which inflammatory response was induced by Lipopolysaccaride (LPS) treatment. Epithelial and stromal cells were isolated from bovine endometrium and separately incubated for 24 h with 1 ?g mL-1 LPS after rifaximin (10, 50 and 100 ?mol L-1 ) or dexamethasone (10 ?mol L-1 ) pre-treatment for 24 h. Supernatants were collected 24 h after LPS treatment and interleukin (IL)-6 and IL-8 accumulation was measured by ELISA. Rifaximin (10, 50 and 100 ?mol L-1 ) dose dependently inhibited the LPS-induced increase in IL-6 and IL-8 in stromal cells, whereas in epithelial cells it was not possible to detect any accumulation of these interleukins. Rifaximin reduced IL-6 and IL-8 production, showing a potential anti-inflammatory effect that opens up to new possibilities for the use of this drug in uterine inflammatory diseases.

SUBMITTER: Flammini L

PROVIDER: S-EPMC6236135 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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Rifaximin anti-inflammatory activity on bovine endometrium primary cell cultures: a preliminary study.

Flammini Lisa L Mantelli Leonardo L Volpe Alessandra A Domenichini Giuseppe G Di Lecce Rosanna R Dondi Maurizio M Cantoni Anna Maria AM Barocelli Elisabetta E Quintavalla Fausto F

Veterinary medicine and science 20180709 4

Rifaximin is an unabsorbed oral antibiotic showing anti-inflammatory properties in human pathologies like irritable bowel syndrome and inflammatory bowel disease. In veterinary medicine, rifaximin is primarily used in the treatment of dermatological diseases in all animal species, in therapy and prophylaxis of mastitis in cows and in the treatment of endometritis in cattle and horses. The aim of this preliminary study was to evaluate the anti-inflammatory properties of rifaximin on primary cell ...[more]

PMID: 29984902

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Project description:BackgroundIn the last years, Wnt signaling was demonstrated to regulate inflammatory processes. In particular, an increased expression of Wnts and Frizzled receptors was reported in inflammatory bowel disease (IBD) and ulcerative colitis to exert both anti- and pro-inflammatory functions regulating the intestinal activated nuclear factor κB (NF-кB), TNFa release, and IL10 expression.MethodsTo investigate the role of Wnt pathway in the response of the enteric nervous system (ENS) to inflammation, neurons and glial cells from rat myenteric plexus were treated with exogenous Wnt3a and/or LPS with or without supporting neurotrophic factors such as basic fibroblast growth factor (bFGF), epithelial growth factor (EGF), and glial cell-derived neurotrophic factor (GDNF). The immunophenotypical characterization by flow cytometry and the protein and gene expression analysis by qPCR and Western blotting were carried out.ResultsFlow cytometry and immunofluorescence staining evidenced that enteric neurons coexpressed Frizzled 9 and toll-like receptor 4 (TLR4) while glial cells were immunoreactive to TLR4 and Wnt3a suggesting that canonical Wnt signaling is active in ENS. Under in vitro LPS treatment, Western blot analysis demonstrated an active cross talk between canonical Wnt signaling and NF-кB pathway that is essential to negatively control enteric neuronal response to inflammatory stimuli. Upon costimulation with LPS and Wnt3a, a significant anti-inflammatory activity was detected by RT-PCR based on an increased IL10 expression and a downregulation of pro-inflammatory cytokines TNFa, IL1B, and interleukin 6 (IL6). When the availability of neurotrophic factors in ENS cultures was abolished, a changed cell reactivity by Wnt signaling was observed at basal conditions and after LPS treatment.ConclusionsThe results of this study suggested the existence of neuronal surveillance through FZD9 and Wnt3a in enteric myenteric plexus. Moreover, experimental evidences were provided to clarify the correlation among soluble trophic factors, Wnt signaling, and anti-inflammatory protection of ENS.

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Rifaximin anti-inflammatory activity on bovine endometrium primary cell cultures: a preliminary study.

Publications

Rifaximin anti-inflammatory activity on bovine endometrium primary cell cultures: a preliminary study.

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