title: The maintenance of gastric mucosal barrier during the early erosive gastritis component of stress ulceration.
abstract: The spectrum of gastric stress ulceration includes early erosive gastritis, which develops within 48 hours of injury, as well as a late ulcerative component. Previous clinical studies with young healthy volunteers as controls have implicated increased back diffusion of hydrogen ions in the pathogenesis of stress ulceration. The present study compares the gastric mucosal integrity of injured patients to an age-matched control population of patients who had undergone elective intra-abdominal operations. These control patients suffered operative injury similar to that of the injured patients and yet, unlike injured patients, they did not develop clinically overt stress ulceration. The patients were studied during the first 2 days following injury and/or operation. No differences were found in the gastric mucosal permeability to hydrogen ions, as measured by back diffusion of hydrogen ions (H+BD) and by absorption of lithium (delta(Li/PSP), between the injured patients and their age-matched controls, despite the subsequent development of clinically overt stress ulceration in 25% of the injured patients. Likewise, there were no differences between the traumatized patients who developed stress ulceration and either their age-matched controls or the remainder of the traumatized patients. These date suggest that increased back diffusion of hydrogen ions cannot be implicated in the erosive gastritis which is the early component of stress ulceration.
mesh_terms: D000042:Absorption; D004058:Diffusion; D005753:Gastric Mucosa / Q000378:metabolism / Q000503:physiopathology*; D005756:Gastritis / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D008094:Lithium / Q000378:metabolism; D008297:Male; D010539:Permeability; D013276:Stomach Ulcer / Q000209:etiology / Q000503:physiopathology*; D013315:Stress, Psychological
chemical_list: D008094:Lithium