Biomedical subjects
Publications and source records attributed to J L Achord.
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An elderly black man was admitted to our institution with macrocytic anemia, dysphagia, and significant weight loss. Results of an esophagogram were suggestive of achalasia. Gastric adenocarcinoma infiltrating the gastric cardia was seen on gastroscopy. The mode of presentation of gastric cancer in this case has not been previously reported in association with pernicious anemia. Patients with pernicious anemia are at higher risk of having gastrointestinal neoplasms than is the general population. We review the current literature and address the controversy concerning the need to subject patients with pernicious anemia to surveillance with upper gastrointestinal endoscopy.
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In this study, we describe the successful induction of experimental autoimmune hepatitis by immunizing inbred strains of mice with syngeneic liver antigens. Hepatic lesions, presumably based on autoimmune mechanisms, induced after 3 weekly immunizations were of only moderate degree. Of the various mouse strains used, C57BL/6 mice showed the most prominent histological changes of the liver, which were accompanied by elevated serum alanine aminotransferase levels. This system offers a potential model for further investigating experimental autoimmune hepatitis.
Serum gastrin levels were measured by radioimmunoassay in 62 patients with colorectal neoplasms (40 with adenomatous polyps and 22 with cancer) and 40 controls. Fasting serum gastrin in both the polyp (73.93 +/- 6.5 pg/ml) and the cancer (99 +/- 19.7 pg/ml) groups was significantly higher than those of the control group (42.65 +/- 2.2 pg/ml). These findings suggest that hypergastrinemia may be an etiologic factor in colorectal neoplasia.
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