@article{6861, keywords = {Concanavalin A, Erythema Nodosum, Humans, leprosy, Lymphocyte Activation, Mitogens, Mitomycins, Mycobacterium Infections, Nontuberculous, Mycobacterium leprae, T-Lymphocytes, Regulatory}, author = {Nath I and Narayanan R B and Mehra N K and Sharma A K and Gupte M D}, title = {Concanavalin A induced suppressor activity in human leprosy.}, abstract = {

Peripheral blood lymphocytes from nine normal subjects and 40 patients with leprosy were pretreated in vitro with Concanavalin A (Con A). Cells from normal subjects pretreated for 24 hours showed consistent and effective generation of suppressive activity which inhibited mitogen induced transformation of autologous lymphocytes. Prolongation of Con A pretreatment to 40 hours resulted in maximal suppressive activity. Tuberculoid leprosy patients had lymphocytes in their blood which on 24 hour pretreatment with Con A exerted suppressive effects markedly greater than the maximal suppression noted with 40 hour pretreated normal lymphocytes. In contrast, untreated patients with polar lepromatous leprosy showed a decrease in suppressive activity which could not be altered by prolongation of Con A pretreatment: the loss of suppressive activity noted in this form of leprosy was restored during erythema nodosum leprosum.

}, year = {1979}, journal = {Journal of clinical & laboratory immunology}, volume = {2}, pages = {319-24}, month = {1979 Nov}, issn = {0141-2760}, language = {eng}, }