tracheal overexpression of il-1β, irak-1 and traf-6 mrna in obese-asthmatic male wistar rats

Authors

mohammad reza aslani tuberculosis and lung diseases research center, tabriz university of medical sciences, tabriz, iran

rana keyhanmanesh drug applied research center, tabriz university of medical sciences, tabriz, iran

amir mehdi khamaneh school of advanced medical sciences, tabriz university of medical sciences, tabriz, iran

mehran mesgari abbasi drug applied research center, tabriz university of medical sciences, tabriz, iran

abstract

objective(s): human and animal studies have shown a close relationship between obesity and asthma severity. here, we examined the effects of diet-induced obesity (dio) on the expression levels of il-1β, irak-1 and traf-6 mrna in male wistar rats tracheal after sensitization with ovalbumin (ova). materials and methods:twenty male wistar rats divided to four groups, included, control group with normal diet (c+nd), ova-sensitized group with normal diet (s+nd), control group with high-fat diet (c+hfd), and ova-sensitized group with high-fat diet (s+hfd). all animals fed for 8 weeks with standard pelts or high-fat diet, and then were sensitized and challenged with ova or saline for another 4 weeks with designed regimens. at the end of study, trachea isolated and examined for expression levels of il-1β, irak-1 and traf-6 mrna with rt-pcr method. results:diet-induced obesity groups developed increased weight, obesity indexes and lipid profiles (p<0.05 to p<0.001). the expression levels of il-1β mrna in ova-sensitization groups (s+nd and s+hfd) showed a significantly increased when compared with control group. also in s+hfd group, expression level of traf-6 mrna was higher than other groups (p<0.001). irak-1 expression level was high in s+hfd compared with control group.il-1β and traf-6 mrna correlated positively with obesity indexes. conclusion:the results showed that dio causes overexpression of il-1β, irak-1 and traf-6 mrna in an experimental model of asthma. our results suggested that in obese-asthmatic conditions locally production and activation of pro-inflammatory agents can be increased. these findings showed that possible mechanism for obesity-asthma relationships.

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Journal title:
iranian journal of basic medical sciences

جلد ۱۹، شماره ۴، صفحات ۳۵۰-۳۵۷

Keywords
[ ' a s t h m a ' , ' i l ' , ' 1 β ' , ' i r a k ' , 1 , ' o b e s i t y ' , ' t r a c h e a l ' , ' t r a f ' , 6 ]

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