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Molecular and Cellular Biochemistry

, Volume 396, Issue 1–2, pp 269–280 | Cite as

Rutin modulates ASC expression in NLRP3 inflammasome: a study in alcohol and cerulein-induced rat model of pancreatitis

  • Ravikumar Aruna
  • Arumugam Geetha
  • Periyanayagam Suguna
Article

Abstract

Inflammasomes are protein complexes formed in response to tissue injury and inflammation to regulate the formation of proinflammatory cytokines. Nod-like receptor pyrin domain containing 3 (NLRP3) is one such inflammasome involved in pancreatic inflammation. Caspase activation recruitment domain (CARD) is an interaction motif found in all the major components of NLRP3 inflammasome such as apoptosis associated speck-like CARD containing protein (ASC) and procaspase-1. NLRP3 activates procaspase-1 with the concerted action of CARD domain of ASC. In the present study, the effect of rutin, a natural flavonoid on the expression of ASC of NLRP3, was investigated in rats treated with ethanol (EtOH) and cerulein (Cer). Male albino Wistar rats were divided into four groups. Groups 1 and 2 rats were fed normal diet, whereas groups 3 and 4 rats were fed EtOH (36 % of total calories) containing diet for a total period of 5 weeks and also administered Cer (20 µg/kg body weight i.p.) thrice weekly for the last 3 weeks. In addition, groups 2 and 4 rats received daily 100 mg/kg body weight of rutin from third week. Rutin co-administration significantly decreased the level of pancreatic marker enzymes, oxidative stress markers, inflammatory markers, mRNA expression of caspase-1, cytokines, ASC–NLRP3, and protein expression of caspase-1 and ASC in rats received EtOH–Cer. The results of the study revealed that rutin can reduce inflammation in pancreas probably by influencing the down regulation of ASC–NLRP3 which might result in the reduced activation of caspase-1 and controlled cytokine production.

Keywords

Caspase-1 ASC–NLRP3 EtOH–cerulein Pancreatitis Proinflammatory cytokines Rutin 

Abbreviations

NLRP3

Nod-like receptor pyrin domain containing 3

CARD

Caspase activation recruitment domain

ASC

Apoptosis associated speck-like CARD containing protein

Notes

Acknowledgments

We thank Mr. Pazanimuthu Annamalai, Principal Scientist, Department of Biomedical Sciences, Sri Ramachandra University, for his expert technical support in RT-PCR study. This work was supported by Indian Council of Medical Research (ICMR) [Senior Research Fellow, file no.: 45/51/2012/BMS/TRM], New Delhi, India.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Ravikumar Aruna
    • 1
  • Arumugam Geetha
    • 1
  • Periyanayagam Suguna
    • 1
  1. 1.Department of Biochemistry, Bharathi Women’s CollegeAffiliated to University of MadrasChennaiIndia

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