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J Clin Microbiol. 1975 March; 1(3): 279-288

Passive transfer of immunity into leprosy patients by transfusion of lymphocytes and by transfusion of Lawrence's transfer factor.

ABSTRACT

About 1,200 million viable lymphocytes from normal but lepromin- and tuberculin-positive human beings were transfused in four patients of lepromatous and one of tuberculoid leprosy three times at monthly intervals. Three patients of lepromatous leprosy suffered from erythema modosum, whereas the other two developed severe reaction whenever put on the smallest dose of dapsone. In one patient of lepromatous leprosy, minimal improvement or none was observed, whereas in the remaining three cases of lepromatous and one of tuberculoid leprosy, clinical, bacteriological, as well as histological improvement occurred. Two of the five patients started to tolerate the dapsone during the period of study. The present study indicates that immunotherapy might have a definite role in the management of the disease especially in cases with erythema nodosum. Lawrence factor, prepared from leucocytes of normal donors, was transfused three times into four lepromatous leprosy patients who were intolerant to anti-leprosy drugs. The donors were healthy but were tuberculin and lepromin (Mitsuda) positive. The clinical, histological, bacteriological (morphological index), and immunological assessments of the patients were performed before and 5 months after starting the immunotherapy. In two patients conversion of Mitsuda reaction occurred, but there was no appreciable improvement in the clinical, histologic, and bacteriologic status of these patients.