ABSTRACT
Tuberculosis continues to be a serious problem of public health causing nearly three million deaths per year all over the world. Despite technologic improvements in the diagnostic methods, it is not possible to control the disease in the absence of surveillance and treatment follow-up programs supervising the ending of treatments, and definitive cure of patients. The frequency of pulmonary and extrapulmonary tuberculosis, and simultaneous pulmonary and extrapulmonary tuberculosis localization among patients assisted at Tránsito Cáceres de Allende Hospital during thirteen years (1991-2003), was determined. The benefit of inoculating the specimens on Stonebrink medium for the best recuperation of Mycobacterium bovis was herein observed, and the contribution of Ziehl Neelsen staining in extrapulmonary materials was tested as well. Out of 790 cases of tuberculosis diagnosed, 723 were pulmonary, and 48 were extrapulmonary localization (pleural 31, renal 7, ganglionar 5, meningeal 2, genital 1, pericardial 1 and digestive 1), and 19 patients presented both, pulmonary and extrapulmonary tuberculosis. Out of the 723 pulmonary cases, 9 were caused by M. bovis. All M. bovis isolates grew on Stonebrink medium, and only one grew also on Lowenstein Jensen. Smear microscopy using Ziehl Neelsen staining resulted positive in 4 extrapulmonary specimens.
ABSTRACT
Las micobacterias ambientales (MA) constituyen un importante grupo de especies bacterianas que se encuentran en el medio ambiente, pueden colonizar y ocasionalmente producir enfermedad enel hombre. En este trabajo se investigó la frecuencia de casos de micobacteriosis en relación con los de tuberculosis durante un período de diez años (1.991-2.000). Se estudiaron 16.700 muestras de 9.300 pacientes adultos de ambos sexos asistidos en el Hospital Regional de Tuberculosis de la Provincia de Córdoba, por consulta espontánea. Los aislamientos se realizaron por cultivo en los medios de Lowenstein Jensen y Stonebrink. Las colonias de bacilos ácidoalcohol resistentes (BAAR) se identificaron por pruebas bioquímicas y moleculares. El total de casos diagnosticados fue de 716, de los cuales 684 (95,5%) correspondieron a al complejo Mycobacterium tuberculosis y a micobacterias ambientales 32 (4,5%). Los casos de micobacteriosis se definieron por reiterados aislamientos con desarrollo representativo de una micobacteria ambiental, sospecha clínica y radiológica. De los 32 casos de micobacteriosis, el 75% del total correspondió aMycobacterium avium-intracellulare,15,6% a Mycobacterium fortuitum, 3,1% a Mycobacterium kansasii y 6,3% a Mycobacterium chelonae.Los casos de tuberculosis fueron 94,5% de localización pulmonar y 5,5% extrapulmonar.
Environmental mycobacteria (EM) constitute an important group of bacteria species found in the environment. They can colonize and occasionally produce disease in man. Sixteen thousand three hundred samples from 9300 adult symptomatic patients from the Hospital Regional of Tuberculosis in Cordoba were bacteriolocally investigated. The isolations were performed by culture on Lowenstein Jensen and Stonebrink culture media. The colonies of acid fast bacilli (AFB) were identified by biochemical and molecular tests. Among 716 culture positive cases, 684 (95.5%) were due to Mycobacterium tuberculosis complex and 32 to environmental mycobacteria.Serial samples allowed the confirmation of the etiologicalagent in culture and correlated with consistent clinical and radiological abnormalities. Seventy-five percente of these patients were affected by M. avium complex, 15.6% by M. fortuitum, 3.1% Mycobacterium kansasii and 6.3% Mycobacterium chelonae. Among tuberculosis cases, 94.5% and 5.5% had pulmonary and extrapulmonary disease respectively.