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Abstract
Bactericidal activity of leukocytes was investigated in 63 patients with new infiltrate pulmonary tuberculosis and 28 patients with fibrous cavernous pulmonary tuberculosis. The diverse oxygen-dependent bactericidal activity of phagocytes is typical of the patients suffering from both clinical forms of tuberculosis: reduction of nitrosative stress rates, which is more frequent in those suffering from fibrous cavernous tuberculosis, and increase of oxidative stress rates, which is more intensive in case of fibrous cavernous tuberculosis. The associated functions were detected among immune-competent cells, involved in the bactericidal function: in case of fibrous cavernous tuberculosis – between oxidative stress rates, and in case of infiltrate pulmonary tuberculosis – between nitrosative stress rates; the synergistic effect of respiratory burst was observed. In case of chronic pulmonary tuberculosis, both types of cells were equally responsible for bactericidal functions, while neutrophils were dominating in new infiltrate pulmonary tuberculosis, without prior treatment, being the cells of the first line of defense. The obtained results allowed concluding that in case of new pulmonary tuberculosis without prior treatment, nitrosative stress played the important role in the killing of tuberculous mycobacteria, while in case of chronic tuberculosis – it was oxidative stress.
Highlights
Bactericidal activity of leukocytes was investigated in 63 patients with new infiltrate pulmonary tuberculosis and 28 patients with fibrous cavernous pulmonary tuberculosis
The diverse oxygen-dependent bactericidal activity of phagocytes is typical of the patients suffering from both clinical forms of tuberculosis: reduction of nitrosative stress rates, which is more frequent in those suffering from fibrous cavernous tuberculosis, and increase of oxidative stress rates, which is more intensive in case of fibrous cavernous tuberculosis
The associated functions were detected among immune-competent cells, involved in the bactericidal function: in case of fibrous cavernous tuberculosis – between oxidative stress rates, and in case of infiltrate pulmonary tuberculosis – between nitrosative stress rates; the synergistic effect of respiratory burst was observed
Summary
Бактерицидная активность лейкоцитов изучена у 63 больных впервые выявленным инфильтративным туберкулезом легких (ИТЛ) и 28 ‒ фиброзно-кавернозным туберкулезом легких (ФКТ). Выявлена сопряженность функционирования иммунокомпетентных клеток, участвующих в бактерицидной функции: при ФКТ ‒ между показателями оксидативного стресса, при ИТЛ – нитрозилирующего; отмечен синергический эффект респираторного взрыва. Если при хронической форме туберкулеза легких за бактерицидную функцию одинаково «отвечают» оба типа клеток, то при впервые выявленном нелеченном ИТЛ доминирующая роль отводится нейтрофилам как клеткам первой линии защиты. Полученные результаты дают основание полагать, что при впервые выявленном нелеченном туберкулезе легких важная роль в подавлении микобактерий туберкулеза отводится нитрозилирующему стрессу, а при хронической форме туберкулеза – оксидативному. К. Бактерицидная активность лейкоцитов у больных туберкулезом легких // Туберкулёз и болезни лёгких.
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