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Slideshow By: Dariana Brown

Streptococcus pyogenes. Slideshow By: Dariana Brown. What is streptococcus pyogenes?. Streptococcus pyogenes: A common bacteria of the skin that causes strep throat (streptococcal pharyngitis), impetigo, other skin infections, rheumatic fever, scarlet fever and many others.

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Slideshow By: Dariana Brown

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  1. Streptococcus pyogenes Slideshow By: Dariana Brown

  2. What is streptococcus pyogenes? • Streptococcus pyogenes: A common bacteria of the skin that causes strep throat (streptococcal pharyngitis), impetigo, other skin infections, rheumatic fever, scarlet fever and many others. • Streptococcus pyogenes bacteria at 900x magnification

  3. Necrotizing fasciitis • Streptococcus pyogenes can cause what is known as necrotizing fasciitis. • Necrotizing fasciitis is a contagious flesh-eating bacteria. • It is caused when the bacteria gets into even a minor cut such as a pin prick. The bacteria will then begin to grow and release toxins that can interfere with the blood flow to tissue, directly kill tissue, and it can break down the material in the tissue making the bacteria spread rapidly. This could lead to you eventually going into shock.

  4. Continued… • About one in four people who get this infection die from it. • This infection is very rare, but very serious.

  5. Strep pharyngitis • Also known as strep throat • Symptoms fever, swollen lymph nodes, and red throat • Is acquired when you inhale the aerosols emitted by other infected people • After this infection has cleared up 1-3% people develop rheumatic fever • Comparison of healthy throat and strep throat

  6. Impetigo • Common skin infection in young children • Spreads through direct contact • Reddened skin commonly on arms, hands, and face • The itchy skin oozes and forms a yellow crust

  7. Erysipelas Older woman with erysipelas • Inflammation and infection of the top layers of the skin • Usually starts where there is a cut or break in the skin • This infection produces very hot, red skin on the face,arms, or legs • Infected parts are raised with sharp borders • This infection can become chronic

  8. Cellulitis • Invades body through a cut or scrape • It occurs on the deepest layers of the skin and usually occurs on face or legs • Infected area quickly becomes red and hot to the touch • Looks shiny and swollen • Symptoms: fever, chills, and muscle aches

  9. Scarlet fever Strawberry tongue • It is uncommon, but painful • Produces sore throat, fever, headache, and muscle aches • A rash will appear on neck and chest and will spread • It will be a pinkish-red rash and it feels like sandpaper • It also turns red with pressure • As reported by Merck Manual Medical Library the papillae on your tongue will swell and it is called “strawberry tongue”

  10. Toxic Shock Syndrome • Uncommon, but serious • In association with infections elsewhere in the body, usually the skin • Fever, confusion, very low blood pressure, kidney and liver failure, difficulty breathing, and bleeding problems • This disease can easily lead to shock and death

  11. Strepococci • Virulence factors of Group A streptococci: • M protein, fibronectin-binding protein (protein F) and lipoteichoic acid for adherence • Hyaluronic acid capsule as an immunological disguise and to inhibit phagocytosis • Invasions such as streptokinase, streptodornase, hyaluronidase, and streptolysins

  12. Continued… • Exotoxins, such as pyrogenic toxin which causes the rash of scarlet fever systemic toxic shock syndrome

  13. RHEUMATIC FEVER It is an inflammatory disease that can develop as a complications of inadequately treated strep throat Most common with children ages 5-15 years old Can cause permanent heart damage Symptoms: inflammation of the heart, joints(most often in the ankles, knees, elbows, or the wrist), skin, or the central nervous system

  14. !!WARNING!! THE PICTURES THAT ARE ABOUT TO BE SHOWN ARE VERY GRAPHIC!!!!!!!!!!!

  15. ADDITIONAL PICTURES Necrotizing fasciitis Impetigo Cellulitis

  16. Work Cited • "Definition of Streptococcus pyogenes." MedicineNet.com. MedicineNet, Inc., 1996-2011. Web. 8 Jul 2011. <http://www.medterms.com/script/main/art.asp?articlekey=11271>. • "Necrotizing soft tissue infection." Pub Med Help. National Center for Biotechnology Information, December 17, 2009. Web. 8 Jul 2011. <http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002415/>.

  17. Continued… • "Diseases Caused by Streptococus Pyogenes ." Air Microbiology. N.p., n.d. Web. 14 Jul 2011. <http://www.microbiologyprocedure.com/air-microbiology/diseases-caused-by-streptococcus-pyogenes.htm>. • "Rheumatic Fever." MayoClinic.com. N.p., 1998-2010. Web. 16 Jul 2011. <http://www.bing.com/health/article/mayo-125604/Rheumatic-fever?q=rheumatic+fever>.

  18. CONTINUED… "Disease caused by Streptococcus pyogenes." Yahoo! Directory. N.p., n.d. Web. 16 Jul 2011. <http://s99.middlebury.edu/BI330A/projects/A.%20Smith/disease_page.htm>.

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