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Effect of chloroquine on human lymphocyte proliferation

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The effect of chloroquine on human blood mononuclear cells was studied. High concentrations of chloroquine in vitro profoundly suppressed the proliferation of mitogen- and antigen-stimulated cells, as indicated by decreased 14C-thymidine incorporation. Lower concentrations of chloroquine increased the response to pokeweed mitogen. The response to concanavalin A and to various antigens was suppressed, especially the response to large particulate antigens. Oral intake of 300 mg of chloroquine base/week did not affect the lymphocyte proliferative responses. 600 mg of base/week decreased the response to large particulate antigens; the response to small antigens was not affected. The mode of action of chloroquine and the possible consequences of the findings for dosage of chloroquine when used for malaria prophylaxis is discussed.
OriginalsprogEngelsk
TidsskriftTransactions of the Royal Society of Tropical Medicine and Hygiene
Vol/bind80
Udgave nummer2
Sider (fra-til)231-5
Antal sider5
ISSN0035-9203
StatusUdgivet - 1 jan. 1986

ID: 33891761