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Biomedical subjects

G R Giles

Publications and source records attributed to G R Giles.

At least 127 records · Page 7Linked to original sources
PubMed1973

Lymphocyte transformation in the mesenteric lymph nodes of patients with Crohn's disease.

The response of lymphocytes from peripheral blood and mesenteric lymph nodes to stimulation with phytohaemagglutinin in vitro has been studied in eight patients suffering from active Crohn's disease. Patients with Crohn's disease exhibited reduced responses when compared with similar studies performed in control subjects. The impaired responses of circulating lymphocytes from these patients were marked on culture in autologous serum and were not improved by culture in homologous AB serum. Lymphocytes from lymph nodes directly draining diseased bowel exhibited lower responses than those from nodes at the root of the mesentery, which in turn were lower than those of circulating lymphocytes.

Crohn Disease↗
PubMed1973

Inhibition of leucocyte migration by tumour-associated antigens of the colon and rectum.

The test of leucocyte migration inhibition has been used to detect lymphocyte sensitization to tumour-associated antigens of the colon and rectum. The procedure for the isolation of antigens from colorectal adenocarcinomata and normal colonic mucosa is described. The circulating lymphocytes of 22 patients suffering from colorectal adenocarcinomata of various stages have been examined and compared with the results obtained for identical studies performed on the peripheral lymphocytes of 15 control subjects. Sensitization of lymphocytes to tumour antigen was demonstrated in 15 of the 22 patients when culture was performed in homologous AB serum. Of these 15 patients only six showed inhibition of leucocyte migration in the presence of tumour extract when culture was performed in autologous serum. These observations would suggest the presence of factors in the serum of such patients which may prevent the expression of cellular immunity to tumour antigens.

Adenocarcinoma↗