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. 2008 Apr;36(4):1205-13.
doi: 10.1097/CCM.0b013e31816a06fc.

Preventive Effects of Curcumin and Dexamethasone on Lung Transplantation-Associated Lung Injury in Rats

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Preventive Effects of Curcumin and Dexamethasone on Lung Transplantation-Associated Lung Injury in Rats

Jiayuan Sun et al. Crit Care Med. .

Abstract

Objective: To investigate potential effects of curcumin or dexamethasone on lung transplantation-associated lung injury.

Design: Prospective, randomized, controlled study.

Setting: Research laboratory.

Subjects: Adult male Sprague-Dawley rats.

Interventions: Sham-operated rats were used as time-matched controls. Experimental rats were subjected to unilateral orthotopic lung transplantation with 4 hrs of cold ischemia followed by 2 hrs (or 24 hrs) of reperfusion. Animals were randomly assigned to vehicle-, curcumin-, or dexamethasone-treated groups.

Measurements and main results: Transplantation-associated lung injury was characterized by an increased alveolar-capillary permeability and myeloperoxidase activity and decreased levels of arterial oxygen tension/inspired oxygen concentration ratio. Pretreatment with curcumin and dexamethasone significantly prevented barrier disruption, lung edema, tissue inflammation, and decreased PaO2 at the early stage of posttransplantation. Nuclear factor-kappaB in transplanted lungs was activated, accompanied by an increase in messenger RNA levels and protein content of tumor necrosis factor-alpha, interleukin-6, and matrix metalloproteinase-9 in lung graft. Those changes were prevented by pretreatment with curcumin and dexamethasone.

Conclusions: Curcumin can be an alternative therapy for protecting lung transplantation-associated injury by suppressing nuclear factor-kappaB-mediated expression of inflammatory genes.

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