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Erschienen in: Digestive Diseases and Sciences 1/2013

01.01.2013 | Original Article

Tetradecylthioacetic Acid Attenuates Inflammation and Has Antioxidative Potential During Experimental Colitis in Rats

verfasst von: Bodil Bjørndal, Tore Grimstad, Daniel Cacabelos, Kim Nylund, Ole Gunnar Aasprong, Roald Omdal, Manuel Portero-Otin, Reinald Pamplona, Gülen Arslan Lied, Trygve Hausken, Rolf K. Berge

Erschienen in: Digestive Diseases and Sciences | Ausgabe 1/2013

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Abstract

Background

The fatty acid analogue tetradecylthioacetic acid (TTA) is a moderate pan-activator of peroxisome proliferator-activated receptors (PPARs), and has in previous studies showed potential as an antioxidant and anti-inflammatory agent, both through PPAR and non-PPAR mediated mechanisms.

Aims

This study aimed to determine whether TTA could alleviate dextran sulfate sodium (DSS)-induced colitis in rats.

Methods

Male Wistar rats were fed a control diet (control- and DSS-group) or a diet supplemented with 0.4 % TTA (TTA + DSS-group) for 30 days, and DSS was added to the drinking water the last 7 days. Ultrasound measurements were performed at day 29. At day 30, rats were sacrificed and the distal colon was removed for histological evaluation and measurement of cytokine levels, oxidative damage, and gene expression.

Results

The disease activity index was not improved in the TTA + DSS-group compared to the DSS-group. However, ultrasound measurements showed a significantly reduced colonic wall thickening in the TTA + DSS-group. TNF-α, IL-1β, and IL-6 were reduced at the protein and mRNA level in the TTA + DSS-group. Moreover, TTA-treated rats demonstrated reduced colonic oxidative damage, while inducible nitric oxide synthase 2 mRNA expression was elevated in both the DSS- and TTA + DSS-groups. PPARγ signaling may be involved in the anti-inflammatory response to TTA, as Pparg mRNA expression was significantly upregulated in colon.

Conclusions

This study demonstrated that the pan-PPAR agonist TTA reduced colonic oxidative damage and cytokine levels in a rat model of colitis, and its potential to ameliorate colitis should be further explored.
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Metadaten
Titel
Tetradecylthioacetic Acid Attenuates Inflammation and Has Antioxidative Potential During Experimental Colitis in Rats
verfasst von
Bodil Bjørndal
Tore Grimstad
Daniel Cacabelos
Kim Nylund
Ole Gunnar Aasprong
Roald Omdal
Manuel Portero-Otin
Reinald Pamplona
Gülen Arslan Lied
Trygve Hausken
Rolf K. Berge
Publikationsdatum
01.01.2013
Verlag
Springer US
Erschienen in
Digestive Diseases and Sciences / Ausgabe 1/2013
Print ISSN: 0163-2116
Elektronische ISSN: 1573-2568
DOI
https://doi.org/10.1007/s10620-012-2321-2

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