Tuberculosis Essay -- Biology Medical Biomedical Disease TB

TuberculosisTuberculosis is caused by Mycobacterium tuberculosis (M.TB.), has a unique cubicle wall, making it difficult to kill and stain. Three matjor components compose the cell wall mycolic acids, cord factor, and Wax-D. M.TB. is also hard to culture and can merely thrive in the body. It is an obligate aerobe and an acid-fast bacteria. Tuberculosis can be diagnosed through the Mantoux test and by staining regularitys such as the Ziel-Neelsen method. Chest x-rays are also used in the diagnosis process to detect any damage done to the lungs.Tuberculosis is caused by M.TB. This bacterium is hard to kill because of its cell wall, which is 60% lipid. M.TB. is also difficult to stain and culture (Todar, Kenneth paragraoh 14). Skin tests and microbiologic smears and cultures are the main methods used to diagnose TB, though the full diagnosis consists of many to a greater extent tests.M.TB. is a rod-shaped bacterium related to the Actinomycetes. The rods are 2 to 4 um long and 0.2 to 0.5 um wide. This bacterium is an obligate aerobe, an organism that needs oxygen to survive. It is a sturdy bacterium that can withstand weak disinfectants and can survive in a dry state for weeks. M. TB. is a slow-growing bacterium that divides every 16 to 20 hours, which is extremely slow compared to other bacterium, which have division times measured in minutes (Wikipedia paragraph 1). Although M.TB. contains peptidoglycan in their cell wall, it is neither Gram-positive nor negative because it lacks the chemical characteristics of either. The Mycobacterium species is classified as acid-fast bacteria because it is virtually impermeable to certain dyes and stains, but once stained, the dye is permanent. The Ziehl-Neelsen method is one method used to stain Mycobac... ...ed as an acid-fast bacilli because of its impermeability to stains. The Mantoux skin test, Ziel-Neelsen method, BACTEC system, and the chest x-rays make up the most common methods used to diagnose tuberculosis. A lthough M.TB. is difficult con under a microscope, the understanding of the cell wall structure helps scientists to invent treatments for tuberculosis.Tuberculosis. Todar, Kenneth. Todars Online Textbook of Bacteriology.2006 University of Wisconsin-Madison, Department of Bacteriology.2007 23 July 2006http//www.textbookofbacteriology.net/tuberculosis.htmTuberculosis. Wikipedia. 27 July 2006 Wikipedia Foundation, Inc. 22 July 2006http//en.wikipedia.org/wiki/TuberculosisTuberculosis. University of knot Health System. 14 March 2005 University of Michigan Health System. 22 July 2006http//www.med.umich.edu/1libr/aha/aha_tb_crs.htm