Diallyl Disulfide Attenuates STAT3 and NF-κB Pathway Through PPAR-γ Activation in Cerulein-Induced Acute Pancreatitis and Associated Lung Injury in Mice.

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We have previously shown that diallyl disulfide (DADS) protects mice against cerulein-induced acute pancreatitis (AP) and associated lung injury. However, the molecular mechanisms underlying its effect and the components involved have not been studied. We hypothesized that DADS may reduce TNF-α, CSE expression, H2S production, STAT3, and NF-κB activation and induce SOCS3 expression through peroxisome proliferator-activated receptor γ (PPAR-γ) pathway in cerulein-induced mice. Male Swiss mice were treated with hourly intraperitoneal injections of cerulein (50µg/kg) for 6h. Diallyl disulfide (200μg/kg) was administered in the presence or absence of PPAR-γ antagonist GW9662 (0.3mg/kg) (i.p) 1h after the induction of AP. Our findings revealed thatDADS blocked TNF-α, CSE expression, H2S production, and STAT3, and NF-κB activation was reversed by GW9662. Furthermore, GW9662 abrogated DADS-induced SOCS3 expression. The results show for the first that DADS-induced anti-inflammatory effect in acute pancreatitis is regulated through PPAR-γ.