BIOL125_Unknown Species Paper

BIOL125_Unknown Species Paper - Identification and...

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Identification and Importance of Staphylococcus aureus as related to Methicillin-Resistant Staphylococcus aureus (MRSA) QuickTime and a decompressor are needed to see this picture. Photo courtesy of Centers for Disease Control and Prevention Prepared By: Scott Cotteen Microbiology (SP09 BIOL–125–1049) Mt. San Jacinto College 1499 N. State Street San Jacinto, CA 92583 April 23, 2009
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S. aureus and MRSA 2 INDEX Abstract. ........................................................................................................................................... 3 Introduction. ..................................................................................................................................... 3 Methods and Materials. .................................................................................................................... 5 Results. ............................................................................................................................................. 7 Discussion and Conclusion. ............................................................................................................. 8 Literature Cited. ............................................................................................................................. 10 Tables and Figures. ........................................................................................................................ 11
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S. aureus and MRSA 3 ABSTRACT For many years Staphylococci have been associated with a wide-range of infections, commonly called “staph” infections. Some of these “staph” infections are becoming more and more antibiotic-resistant, making treatment difficult, if not impossible, in many cases. Staphylococcus aureus is one of these antibiotic-resistant microorganisms associated with several disabling and potentially fatal diseases, including methicillin-resistant Staphylococcus aureus (MRSA). Because of the seriousness of these diseases, accurate identification of this pathogen is critical to medical personnel attempting to treat conditions resulting from S. aureus infections. In this project, an unknown bacteria (Unknown Bacteria #4) was subjected to several tests, which resulted in morphological and biochemical characteristics. These results were used to determine the genus and species of the unknown bacteria, which was ultimately identified as Staphylococcus aureus. INTRODUCTION Staphylococci are Gram-positive cocci bacteria that usually occur in grape-like clusters [11]. Although there are several species of Staphylococcus , only Staphylococcus aureus and Staphylococcus epidermidis are significant with respect to humans [14]. In fact, Staphylococci are the most common cause of bacterial infections in humans [11]. S. aureus are found in nasal passages; in throats; on the hair; and on skin of approximately 50% percent of the healthy human population [2]. The percentage of persons carrying Staphylococci is even higher for those who come into contact with sick individuals and those working in hospital environments [2]. S. aureus
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This note was uploaded on 08/12/2009 for the course BIOL 125 taught by Professor Dr.sujathapamula during the Spring '09 term at San Jacinto.

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BIOL125_Unknown Species Paper - Identification and...

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