LDH Isoenzyme Pattern of Uninvolved Gastric Mucosa of Patients with Gastric Carcinoma and Benign Gastric Disease

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Abstract
The LDH isoenzyme pattern of the uninvolved mucosa of gastric cancer patients differs as regards the LDH isoenzyme pattern from that of similar tissue of patients with benign gastric disease; the former tissue is characterised by a high M/H ratio of the LDH isoenzymes (M and H sub-units). A high M/H ratio characterises antral mucosa when the latter is compared with fundic mucosa. Mucosa showing superficial and atrophic gastritis also has a higher M/H ratio, whereas the presence of intestinal metaplasia does not appear to influence the M/H ratio. These observations are consistent with the concept that the tissue from which the cancer arose may possess a pre-malignant biochemical lesion.