Microorganism Controlling by Streptomycin ( an Aminoglycoside) and Other Aminoglycoside Antibiotics

	Microorganism Controlling by Streptomycin ( an Aminoglycoside) and Other Aminoglycoside Antibiotics- This was discovered by Selman A. Waksman. Several mold like soil bacteria-actinomycetes produced antimicrobial chemicals. Of these, Streptomyces griseous was most effective producer. The substance produced by it was named Streptomycin by Waksman, Elizabeth Bugie and Albert Shatz. This drug was made available in 1947 and Waksman received Nobel Prize in 1952 in Physiology or medicine .
Streptomycin in combination with isoniazid is important for treatment of tuberculosis. Gram-negative infections as plague, brucellosis are also treated. Gentamicin is the first drug to be given for infections by Gram-negative bacteria. It is combined with carbenicillin for Pseudomonas infections, with ampicillin for strepytococcal infections of intestine, and with cephalosporin for staphlococcal disorders. Neomycin is now used as topical antibiotic for eye bacterial conjunctivitis or other Gram-negative infections.
Commercially, it is available as neosporin when combined with polymyxin, and as cortisporin when combined with cortisone, bacitracin, and polymyxin. The mixtures are useful for a variety of mild skin infections due to Gram-negative or Gram-positive bacteria. All aminoglycosides are derived from the species of Streptomyces

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