Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

Tuberculosis: Pathophysiology, Clinical Features, Diagnosis and Antitubercular Activity of an Actinomycin Produced by a New Species of Streptomyces


Affiliations
1 Department of Pharmaceutical Chemistry, Shri Sarvajanik Pharmacy College, Hemchandracharya North Gujarat University, Arvind Baug, Mehsana-384001, Gujarat, India
     

   Subscribe/Renew Journal


Tuberculosis is an infection caused by the rod-shaped, non-spore-forming, aerobic bacterium Mycobacterium tuberculosis.Mycobacteria typically measure 0.5 im by 3 im, are classified as acid-fast bacilli, and have a unique cell wall structure crucial to their survival. The well developed cell wall contains a considerable amount of a fatty acid, mycolic acid, covalently attached to the underlying peptidoglycan-bound polysaccharide arabino galactan, providing an extraordinary lipid barrier. Mycobacterium tuberculosis is spread by small airborne droplets, called droplet nuclei, generated by the coughing, sneezing, talking, or singing of a person with pulmonary or laryngeal tuberculosis. These minuscule droplets can remain airborne for minutes to hours after expectoration. During the course of a systematic search for new antibiotics, an actinomycin complex was isolated from Streptomyces regensis sp. This actinomycin complex differs from other actinomycins described in literature in its amino acid composition and is very highly active against Staphylococcus aureus and Mycobacterium tuberculosis. The strains of Staph. aureus highly resistant to penicillin, streptomycin, chloramphenicol, tetracyclin and erythromycin are equally susceptible to its action.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Centers for Disease Control and Prevention. World TB day-March 24, 2007. MMWR Morb Mortal Wkly Rep. 2007;56(11):245.
  • Centers for Disease Control and Prevention. Trends in tuberculosis incidence,United States, 2006. MMWR Morb Mortal Wkly Rep. 2007;56(11):245-250.
  • Goldrick BA. Once dismissed, still rampant: tuberculosis, the second deadliest infectious disease worldwide. Am J Nurs. 2004; 104(9):68-70.
  • Porth CM. Alterations in respiratory function: respiratory tract infections, neoplasms, and childhood disorders. In: Porth CM, Kunert MP. Pathophysiology: Concepts of Altered Health States. Philadelphia, PA: Lippincott Williams & Wilkins; 2002:615-619.
  • Lee RB, Li W, Chatterjee D, Lee RE. Rapid structural characterization of the arabinogalactan and lipoarabinomannan in live mycobacterial cells using 2D and 3D HR-MAS NMR: structural changes in the arabinan due to ethambutol treatment and gene mutation are observed. Glycobiology. 2005;15(2):139-151.
  • Joe M, Bai Y, Nacario RC, Lowary TL. Synthesis of the docosanasaccharide arabinan domain of mycobacterial arabinogalactan and a proposed octadecasaccharide biosynthetic precursor. J Am Chem Soc. 2007;129 (32):9885-9901.
  • American Thoracic Society and Centers for Disease Control and Prevention. Diagnostic standards and classification of tuberculosis in adults and children. Am J Respir Crit Care Med. 2000;161(4 pt 1):1376-1395.
  • Frieden TR, Sterling TR, Munsiff SS, Watt CJ, Dye C. Tuberculosis. Lancet. 2003;362: 887-899.
  • Jensen PA, Lambert LA, Iademarco MF, Ridzon R; Centers for Disease Control and Prevention. Guidelines for preventing the transmission of Mycobacterium tuberculosis in health-care settings, 2005. MMWR Recomm Rep. 2005;54(RR-17):1-141.
  • Korf JE, Pynaert G, Tournoy K, et al.Macrophage reprogramming by mycolic acid promotes a tolerogenic response in experimental asthma. Am J Respir Crit Care Med. 2006;174(2):152-160.
  • van Crevel R, Ottenhoff THM, van der Meer JWM. Innate immunity to Mycobacterium tuberculosis. Clin Microbiol Rev. 2002;15: 294-309.
  • Nicod LP. Immunology of tuberculosis. Swiss Med Wkly. 2007;137(25-26):357-362.
  • Li Y, Petrofsky M, Bermudez LE. Mycobacterium tuberculosis uptake by recipient host macrophages is influenced by environmental conditions in the granuloma of the infectious individual and is associated with impaired production of interleukin-12 and tumor necrosis factor alpha. Infect Immun. 2002;70:6223-6230.
  • Ferguson JS, Weis JJ, Martin JL, Schlesinger LS. Complement protein C3 binding to Mycobacterium tuberculosis is initiated by the classical pathway in human bronchoalveolar lavage fluid. Infect Immun. 2004;72:2564-2573.
  • Goyot-Revol V, Innes JA, Hackforth S, Hinks T, Lalvani A. Regulatory T cells are expanded in blood and disease sites in patients with tuberculosis. Am J Resp Crit Care Med. 2006;173:803-810.
  • Rosenkrands I, Slayden RA, Crawford J, et al. Hypoxic response of Mycobacteria tuberculosis studied by metabolic labeling and proteome analysis of cellular and extracellular proteins. J Bacteriol. 2002;184:3485-3491.
  • Gupta, K. C., Sobti, R. R., and Chopra, I. C., Hindustan Antibiotics Bull., Vol. 6 (1), 12, 1963.

Abstract Views: 332

PDF Views: 0




  • Tuberculosis: Pathophysiology, Clinical Features, Diagnosis and Antitubercular Activity of an Actinomycin Produced by a New Species of Streptomyces

Abstract Views: 332  |  PDF Views: 0

Authors

Ravi G. Patel
Department of Pharmaceutical Chemistry, Shri Sarvajanik Pharmacy College, Hemchandracharya North Gujarat University, Arvind Baug, Mehsana-384001, Gujarat, India
Chirag K. Patel
Department of Pharmaceutical Chemistry, Shri Sarvajanik Pharmacy College, Hemchandracharya North Gujarat University, Arvind Baug, Mehsana-384001, Gujarat, India
B. Panigrahi
Department of Pharmaceutical Chemistry, Shri Sarvajanik Pharmacy College, Hemchandracharya North Gujarat University, Arvind Baug, Mehsana-384001, Gujarat, India
C. N. Patel
Department of Pharmaceutical Chemistry, Shri Sarvajanik Pharmacy College, Hemchandracharya North Gujarat University, Arvind Baug, Mehsana-384001, Gujarat, India

Abstract


Tuberculosis is an infection caused by the rod-shaped, non-spore-forming, aerobic bacterium Mycobacterium tuberculosis.Mycobacteria typically measure 0.5 im by 3 im, are classified as acid-fast bacilli, and have a unique cell wall structure crucial to their survival. The well developed cell wall contains a considerable amount of a fatty acid, mycolic acid, covalently attached to the underlying peptidoglycan-bound polysaccharide arabino galactan, providing an extraordinary lipid barrier. Mycobacterium tuberculosis is spread by small airborne droplets, called droplet nuclei, generated by the coughing, sneezing, talking, or singing of a person with pulmonary or laryngeal tuberculosis. These minuscule droplets can remain airborne for minutes to hours after expectoration. During the course of a systematic search for new antibiotics, an actinomycin complex was isolated from Streptomyces regensis sp. This actinomycin complex differs from other actinomycins described in literature in its amino acid composition and is very highly active against Staphylococcus aureus and Mycobacterium tuberculosis. The strains of Staph. aureus highly resistant to penicillin, streptomycin, chloramphenicol, tetracyclin and erythromycin are equally susceptible to its action.

References