Histamine protects against the acute phase of experimentally-induced hepatic ischemia/re-perfusion.
2013
Histamine, involved in many inflammatory reactions and immune responses, is reported to suppress—via H4R stimulation—injury concomitant with the late phase of warm hepatic ischemia/re-perfusion (I/R). The current study investigated the possible effects of histamine on the acute phase of hepatic I/R injury, and the possible underlying mechanisms like oxidative stress and release of inflammatory cytokines (e.g., tumor necrosis factor (TNF)-α nd interleukin [IL]-12). Rats were divided into naive, sham-operated, and I/R groups. The I/R group was divided into sub-groups and pre-treated with histaminergic ligands before induction of ischemia. Anesthetized rats were subjected to warm ischemia for 30 min by occlusion of the portal vein and hepatic artery, then re-perfused for 90 min. Rats in the control I/R group showed significant increases in hepatic malondialdehyde (MDA), TNFα, and IL-12 contents, and in plasma alanine transaminase (ALT) and aspartate transaminase (AST) levels, along with significant decreases...
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