Clinical and serological studies of tuberculosis patients receiving immunotherapy with Mycobacterium vaccae

DLUGOVITZKY D; BOTTASSO O; DOMININO J; VALENTINI E; HARTOPP R; SINGH M; STANFORD C; STANFORD J; BOTTASSO OSCAR

RESPIRATORY MEDICINE.

W B SAUNDERS CO LTD

Lugar: Londres; Año: 1999 vol. 93 p. 557 - 562

0954-6111

Two small, placebo-controlled studies of immunotherapy with heat killed Mycobacterium vaccae added to routine chemotherapy for pulmonary tuberculosis, together involving 40 HIV seronegative patients, were carried out in Argentina. The immunotherapy was associated with reduced sputum smear positivity of AFB at 1 month and a greater reduction in ESR at 2 months. In the first study radiological improvement was better (P<O.05) amongimmunotherapy recipients. In the second study, weight regain and time to become apyrexial were measured and were found to be improved amongst immunotherapy recipients (P<O.05). In the first month of treatment the levels of IgG to the 65 kDa and 70 kDa heat-shock proteins showed greater falls following immunotherapy (PC <O.05 and P<O*OOl, respectively). On admission serum cytokine levels of interleukins 4 and 10 (IL-4, IL-lo), interferon gamma (IFN-y) and tumour necrosis factor alpha (TNF-a) weregrossly raised in comparison with a matched control group (P<O.OOl). After 1 month. Levels of IL-4, IL-10 and TNF  fell (P<O.OOl, P<O.Ol and PcO.01, respectively) and levels of IFN-?I rose more (P=O-005) in immunotherapy recipients than in those receiving chemotherapy alone. The results are in accord with a switch towards a THl immunological status and clinical benefit for immunotherapy recipients.