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Pathogenic bacteria can be grouped into three categories on the basis of their invasive properties for eukaryotic cells (Fig. 7-4; Table 7-3). Although some bacteria (e.g., Rickettsia , Coxiella , and Chlamydia ) grow only inside host cells, others (e.g., Salmonella , Shigella , and Yersinia ) are facultative intracellular pathogens, invading ...
1. Introduction to Pathogenic Bacteria. Tracey Elizabeth Love and Barbara Jones. Abstract. This chapter is a brief introduction to pathogenic microorganisms and also discusses virulence factors. An understanding of virulence factors is important, as they represent potential targets for the detection of microbial pathogens.
9 gru 2022 · Pathogen species belong to 10 phyla and 24 classes scattered throughout the bacterial phylogeny. We show that new human pathogens are discovered at a rapid rate. Finally, we discuss how our results could be expanded to a database, which could provide a useful resource for microbiologists.
21 mar 2012 · This chapter focuses on the lifestyle of pathogenic micro-organisms and how they infect us, reproduce and cause disease. We shall use the word ‘pathogenicity’ to indicate the capacity to cause disease (or damage) in nonimmune individuals.
21 kwi 2024 · Virulence factors contribute to a pathogen’s ability to cause disease. Exoenzymes and toxins allow pathogens to invade host tissue and cause tissue damage. Exoenzymes are classified according to the macromolecule they target and exotoxins are classified based on their mechanism of action.
Pathogenic bacteria also produce biological poison called as toxins which invade the host by damaging tissues. They can be classified as endotoxins or exotoxins.
19 paź 2017 · All viruses are obligate pathogens as they are dependent on the cellular machinery of their host for their reproduction. Obligate pathogens are found among bacteria, including the agents of tuberculosis and syphilis, as well as protozoans (such as those causing malaria) and macroparasites.
