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Biomedical subjects

I R Mackay

Publications and source records attributed to I R Mackay.

At least 343 records · Page 19Linked to original sources
PubMed1973

Chronic liver disease: differences in autoimmune serological reactions between Australians and Asians.

A total of 164 patients from Australia, Ceylon, India, Singapore, and Thailand were studied for the prevalence of autoantibodies associated with "idiopathic" chronic liver disease-namely, antinuclear antibody, smooth muscle antibody, and mitochondrial antibody. The prevalence of these autoantibodies was high among patients from Australia (55%), but was low among patients from Ceylon (14%), India (11%), Singapore (0%), and Thailand (8%). There are variations in types of hepatitis and cirrhosis between races, and this applies particularly to the type associated with autoimmune markers. This may be related to genetic differences that have evolved between peoples of European and Asian descent.

Antibodies, Antinuclear↗
PubMed1973

Studies of carcinoembryonic antigen activity of whole and extracted serum in ulcerative colitis.

The present study has used a microradioimmunoassay to detect carcinoembryonic antigen(s) (CEA) in whole and extracted serum in 77 patients with ulcerative colitis, two of whom had coexisting colonic carcinoma, and 69 patients with carcinoma of the colon or rectum. Taking 5 ng/ml as the level of positivity, the CEA assay on whole serum showed positive results in patients with ;active' ulcerative colitis (15 of 17) but not in those with ;inactive' disease (0 of 23). In two patients, levels fell during drug-induced remission. Our results also indicated that a positive result for CEA on extracted serum was associated with carcinomatous changes in ulcerative colitis in contrast to uncomplicated ulcerative colitis in which positive results were obtained only with whole serum.

Antigens, Neoplasm↗
PubMed1973

Carcinoembryonic antigen in serum in diseases of the liver and pancreas.

Carcinoembryonic antigen (CEA) was measured in whole serum and in serum extracted with perchloric acid by microradioimmunoassay in patients with benign and malignant diseases of the liver and pancreas. The level of detectability was 5 ng per ml. This level or greater was present in the serum of 50% of patients with chronic diffuse liver disease, 64% with pancreatitis, 94% with cancer of the digestive system, and 3% of controls. The incidence of levels of CEA of 5 ng/ml or more differed for various categories of chronic liver disease: from 22% in active chronic hepatitis, 46% in primary biliary cirrhosis, 63% in hepatoma, 78% in cryptogenic cirrhosis, and 88% in alcoholic cirrhosis; levels of CEA correlated with degrees of impairment of liver function as judged by bromsulphalein retention and serum levels of alkaline phosphatase and transaminase. In pancreatitis, 64% of cases had levels of CEA ranging from 5 to 20 ng/ml and in cancer of the pancreas 94% had levels above 5 ng/ml and 50% above 20 ng/ml.

Adolescent↗