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Biomedical subjects

R K Chandra

Publications and source records attributed to R K Chandra.

At least 163 records · Page 9Linked to original sources
PubMed1975

Serum complement and immunoconglutinin in malnutrition.

Serum haemolytic complement activity and C3 were significantly decreased in 35 malnourished children. The changes were more pronounced in those with infection. Electrophoretically altered forms of complement C were detected in 14. There was an inverse correlation between C3 levels and immunoconglutinin titres. Nutritional rehabilitation and eradication of infection reversed the abnormalities. It is suggested that reduced complement function in malnutrition is the combined result of impaired synthesis, complement activation in vivo, and changes in plasma volume, and that it may contribute to an increased susceptibility to infection in undernourished individuals.

Animals↗
PubMed1975

Food antibodies in malnutrition.

Antibodies to several food proteins were detected in the serum of 13 out of 20 malnourished children. Antibody activity was found mainly in the IgG and IgA classes. On ingestion of food items to which antibodies were demonstrated, no untoward symptom occurred nor was complement activation observed in vivo. It is suggested that food antibodies in malnourished children result from atrophied gut mucosa and reduced secretory immune response, which permit passage of intact or incompletely digested protein molecules, and impaired phagocytic function of hepatic reticuloendothelial system. Such antibodies do not appear to play any immediate immunopathological role.

Antibodies↗
PubMed1975

Lymphocyte response to hepatitis B surface antigen. Findings in hepatitis and Indian childhood cirrhosis.

The lymphocyte delayed hypersensitivity response to phytohaemagglutinin (PHA) and hepatitis B antigen (HBsAG) was evaluated by two in vitro tests-leucocyte migration inhibition and DNA synthesis. Patients convalescing from HBsAG-positive hepatits showed the presence of a state of cell-mediated immune responsiveness to the antigen. In Indian childhood cirrhosis, there was a failure of response to HBsAG and a slight but significant depression of reaction to PHA. It is suggested that the lack of immune reactivity to HBsAG, perhaps determined genetically, may be a significant factor in the evolution of cirrhosis in Indian children.

Animals↗
PubMed1974

Rosette-forming T lymphocytes and cell-mediated immunity in malnutrition.

The frequency of rosette-forming thymus-dependent lymphocytes was reduced in the peripheral blood of malnourished infants and children. The reduced frequency parallelled the impairment of delayed hypersensitivity response to 2, 4-dinitrochlorobenzene and decreased DNA synthesis by lymphocytes challenged with phytohaemagglutinin. The abnormalities were reversed on nutritional improvement.

Animals↗