Abstract
In various drug-induced gastric mucosal injuries, it has been speculated that changes in gastric mucosal energy metabolism differ according to the cause of injury. This study was conducted to investigate the role of energy metabolism in two drug-induced gastric mucosal injuries in humans. The subjects were patients with acute gastric mucosal injury due to non-steroidal anti-inflammatory drugs (NSAID) or steroids, and normal controls. Two sets of tissue specimens from the antrum and corpus of the stomach were obtained. One specimen from each area was used for histological analysis and the other was stored in liquid nitrogen. The stored tissues were homogenized. Adenosine triphosphate (ATP), adenosine diphosphate (ADP) and adenosine monophosphate (AMP) were measured by the luciferin-luciferase method. In the NSAID group, the ATP levels and the total adenine nucleotide (TAN) levels in both the antrum and corpus were significantly lower than in the control group. In the steroid group, no significant differences were observed in either the ATP or TAN levels. The NSAID decreased energy metabolism in the entire stomach while the steroid had a negligible effect on energy metabolism.
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