Micro Lab Report
Isolation and Identification of Staphylococcus aureus and epidermidis
Wendy Heck
Bio 175: General Microbiology
Fall 2012-11-21
Staphylococcus aureus is the most pathogenic for humans and Staphylococcus epidermidis is part of the normal flora and is of low pathogenicity.
Staphylococcus epidermidis and Staphylococcus aureus are two medically important species of bacteria. A culture from the nose and throat was taken to perform whether or not Staphylococcus epidermidis or Staphylococcus aureus were detected. Test were performed to determine which Stpahylococci was present and the results of the test indicated that
Staphylococcus epidermidis was present.
Introduction:
The genus Staphylococcus includes more than 20 species as described in Bergey 's Manual (2001). Only two are significant to humans, Staphylococcus aureus and Staphylococcus epidermidis. S. aureus colonizes mainly the nasal passages, but it may be found regularly in the oral cavity, gastrointestinal tract and the skin. Staphylococcus epidermidis is an inhabitant of the skin. Of these two Staphylococcus aureus is serious pathogen. Staphylococcus epidermidis is of the normal flora and is not considered to be a serious pathogen (textbookofbacteriology.net). Staphylococcus epidemidis becomes pathogenic when the skin is broken or through contamination from medical procedure. Staphylococcus aureus are only able to invade via broken skin or mucous membranes.
Staphylococcus aureus is very heat resistant and reheating foods will not destroy it, although the bacteria may be destroyed (www.sunysccc.edu). About 30 per cent of healthy humans are carriers of S. aureus, they have the bacteria on their skin without any active infection or disease. Staphylococci hide their antigens to avoid an immune response many different ways to include killing infection-fighting cells (phagocytes), surviving within host infection-fighting cells, and developing a resistance to antibiotics (www. dermnetnz.org)
Purpose
Wendy Heck
Bio 175: General Microbiology
Fall 2012-11-21
Staphylococcus aureus is the most pathogenic for humans and Staphylococcus epidermidis is part of the normal flora and is of low pathogenicity.
Staphylococcus epidermidis and Staphylococcus aureus are two medically important species of bacteria. A culture from the nose and throat was taken to perform whether or not Staphylococcus epidermidis or Staphylococcus aureus were detected. Test were performed to determine which Stpahylococci was present and the results of the test indicated that
Staphylococcus epidermidis was present.
Introduction:
The genus Staphylococcus includes more than 20 species as described in Bergey 's Manual (2001). Only two are significant to humans, Staphylococcus aureus and Staphylococcus epidermidis. S. aureus colonizes mainly the nasal passages, but it may be found regularly in the oral cavity, gastrointestinal tract and the skin. Staphylococcus epidermidis is an inhabitant of the skin. Of these two Staphylococcus aureus is serious pathogen. Staphylococcus epidermidis is of the normal flora and is not considered to be a serious pathogen (textbookofbacteriology.net). Staphylococcus epidemidis becomes pathogenic when the skin is broken or through contamination from medical procedure. Staphylococcus aureus are only able to invade via broken skin or mucous membranes.
Staphylococcus aureus is very heat resistant and reheating foods will not destroy it, although the bacteria may be destroyed (www.sunysccc.edu). About 30 per cent of healthy humans are carriers of S. aureus, they have the bacteria on their skin without any active infection or disease. Staphylococci hide their antigens to avoid an immune response many different ways to include killing infection-fighting cells (phagocytes), surviving within host infection-fighting cells, and developing a resistance to antibiotics (www. dermnetnz.org)
Purpose
Cited: Bukhari, Mohammad . "Staphylococcus epidermidis." web.uconn.edu. University of Connecticut-Dept. of Molecular and Cell Biology, 27 Sept. 2004. Web. 19 Nov. 2011. . "Schenectady County Community College." Schenectady County Community College. Scheneltady county community college, n.d. Web. 21 Nov. 2011. . Stanway, Amy . "Staphylococcal skin infections. DermNet NZ." DermNet NZ. Facts about skin from New Zealand Dermatological Society.. Department of Dermatology, Health Waikato, 20 July 2002. Web. 21 Nov. 2011. . Todar, Kennith. "Online Textbook of Bacteriology." Online Textbook of Bacteriology. N.p., n.d. Web. 21 Nov. 2011. .