ACTINOMYCETES AND ATYPICAL MYCOBACTERIA: MICROBIOLOGICAL CHARACTERIZATION AND MODERN DIAGNOSTIC METHODS
Abstract
This article addresses one of the pressing issues in modern microbiology — the comparative characterization of actinomycosis pathogens and atypical mycobacteria, as well as their laboratory diagnostic methods. The primary objective of the study is to investigate the morphological characteristics of the Actinomyces genus and to differentiate atypical mycobacteria according to the Runyon classification. The article analyzes the role of these microorganisms in human pathology, focusing particularly on the practical significance of mycobacteriosis in immunocompromised patients. In the diagnostic process, special attention is paid to classical microscopic methods, including Gram and Ziehl-Neelsen staining, as well as the specific features of detecting sulfur granules (drusen). The role of biochemical indicators, such as the niacin test and catalase activity, in distinguishing atypical mycobacteria from true tubercle bacilli is highlighted. The results indicate that precise identification of the pathogen at the species level plays a crucial role in determining effective treatment strategies for chronic infections.
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