The Bcg/Ity/Lsh gene (candidate Nramp) controls natural resistance to several parasites, such as Mycobacterium bovis, Leishmania donovani, and Salmonella typhimurium. Using two macrophage (M phi) cell lines (B10R and B10S) derived from mouse strains congenic at Bcg, we found that M phi s from resistant mice (B10R M phi s) act more effectively against the two morphogenetic forms of the dimorphic...

With a view to exploring the role of transforming growth factor beta (TGF-beta) during mycobacterial infection, recombinant clones of bacillus Calmette-Guérin (BCG) were engineered to express the natural antagonist of TGF-beta, latency-activated peptide (LAP). Induction of TGF-beta activity was reduced when macrophages were infected with BCG expressing the LAP construct (LAP-BCG). There was a s...

Stimulation with Bacillus Calmette-Guerin (BCG) vaccine has been reported to enhance resistance of mice against Leishmania donovani infection. Such infection is usually lethal in hamsters, thus providing a more stringent animal model to assess the effect of BCG upon visceral leishmaniasis. Animals receive two IP injections (2-8 X 10(7) BCG) pre or post IC challenge with 4 X 10(6) amastigotes. C...

Disseminated Bacillus Calmette-Guerin (BCG) infection after innoculation of live vaccine is considered to result from impaired immunity. However, in half of the cases, regarded as idiopathic, no well-defined immunodeficiency condition can account for the infection. The objective of this study was to report the prevalence, clinical features, associated infections, and outcome of children with id...

GM2, GD2, and GD3 gangliosides are expressed on the surface of human melanoma cells and represent potential targets for immunological control of melanoma growth by monoclonal antibodies and active immunization. The immunogenicity of GM2 was investigated by analyzing the humoral immune response of melanoma patients to vaccination with cell lines selected for high GM2 expression and with vaccines...

BACKGROUND There is currently no safe human challenge model of Mycobacterium tuberculosis infection to enable proof-of-concept efficacy evaluation of candidate vaccines against tuberculosis. In vivo antimycobacterial immunity could be assessed using intradermal Mycobacterium bovis bacille Calmette-Guérin (BCG) vaccination as a surrogate for M. tuberculosis infection. METHODS Healthy BCG-naive...

Bacillus Calmette-Guërin (BCG) has been traditionally used as a vaccine against tuberculosis. Further, intravesical administration of BCG has been shown to be effective in treating bladder cancer. Although BCG contains a live attenuated strain of Mycobacterium bovis, complications such as M. bovis BCG infection caused by BCG administration are extremely rare. Here, we report a case of BCG infec...

Rare cases of tuberculous urinary tract or genital infection caused by intravesical Intravesical Bacillus Calmette-Guerin (BCG) instillation therapy have been reported. We encountered a patient with tuberculous granuloma in the scrotal skin after intravesical BCG therapy for bladder cancer. There was evidence of infection in the scrotal skin, but not in the epididymis. To the best of our knowle...

The toxicity of intrapleural Tice strain Bacillus Calmette-Guérin (BCG) infection was tested in hamsters. Doses above 10(6) colony-forming units caused significant systemic infection, which could be controlled with conventional antituberculosis therapy. Living BCG in the pleural space did not prevent the healing of bronchial or vascular closures after pulmonary resection. Prophylactic intrapleu...

The purpose of this study was to survey infections with Salmonella spp. in poultry flocks in the vicinity of Tehran and to determine the most frequent serogroups and serotypes implicated. Twenty-eight samples of pullet, layer, and broiler flocks were randomly collected (n=1463), including freshly dropped feces from live birds or visceral organs from dead birds. In most flocks, 60 samples were t...