1 / 14

ANTIBIOTICS

ANTIBIOTICS. How do we usually fight bacteria, naturally? 2) Differentiate between bactericidal and bacteriostatic ? 3)What is the single form of bacteria? 4)Why don’t doctors prescribe antibiotics for the common cold? 5) What are anaerobic bacteria?

lavi
Download Presentation

ANTIBIOTICS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ANTIBIOTICS

  2. How do we usually fight bacteria, naturally? 2) Differentiate between bactericidal and bacteriostatic? 3)What is the single form of bacteria? 4)Why don’t doctors prescribe antibiotics for the common cold? 5) What are anaerobic bacteria? 6) Explain the purpose of a prophylactic antibacterial regimen. 7) What is a major side effect of clindamycin? 8)Why/how do bacteria become resistant?

  3. Mozart-Minuet • December 5, 1791-Wolfgang Amadeus Mozart dies at 35-a mystery!! • Today- a common strep infection killed the maestro at the age of 35 • (Annals of Internal Medicine) –HOW DOES THIS MAKE SENSE? • Strep in the 18th c = MRSA etc in the 21st c • Infections are increasingly difficult to stop—even with a modern arsenal of antibiotics. • Resistant infections for which we have no effective treatment—putting us in much the same situation as those in the pre-antibiotic era • Maya Sequeria www.kevinmd.com

  4. S. Aureus staph infection

  5. Antibiotic Players **In 3500 BC the Sumerian doctors would give patients beer soup mixed with snakeskins and turtle shells. **Babylonian doctors would heal the eyes by using an ointment made of frog bile and sour milk. **The Greeks used many herbs to heal ailments. Read article Modern History-Do Now-make a list! Louis Pasteur-bacteria kill other bacteria Ehrlich’s “Magic Bullets”-synthetic antimicrobial Sir Alexander Fleming-1929-penicillin Domagk-synthetic antimicrobials (sulfonamides)

  6. http://www.hhmi.org/biointeractive/Antibiotics_Attack/frameset.htmlhttp://www.hhmi.org/biointeractive/Antibiotics_Attack/frameset.html

  7. Vocabulary Antibiotic Sterilization/disinfection/antisepsis Selective toxicity Bactericidal Bacteriostatic Minimal inhibitory concentration (MIC) Susceptibility testing Resistance

  8. ANTIBIOTICS/ANTIMICROBIALS • Medications to treat bacterial infections • Ideally, culture of suspect area should be done BEFORE starting antibiotic Bacterial Infections!!!

  9. ANTIBIOTICS • Selectively toxic for bacteria-targets bacterial structures • bactericidal • –ex: antibiotics that target the cell wall, w/o which, • there is no osmotic pressure and the cell bursts • bacteriostatic • no harm to patients….. • Inside the body • MIC (minimum inhibitory concentration)-next week!

  10. antibiotic attack What was the point of this game-what does it teach you about the different antibiotics and their activity in the body? Research & write about their targets, side effects and effectiveness.

  11. Sterilization All killed and non-selective • 2) Methods: • autoclaving • 121oC (heat/pressure):use • heat-resistant materials • ethylene oxide • usually equipment • ultra-violet light • surfaces (e.g operating rooms) • not totally effective

  12. Disinfection • -substances that kill bacteria on non-living surfaces • (ex. Phenol based) • -too toxic for the skin surfaces • -not as effective as the extreme methods of sterilization • Antisepsis • Topical (ex. Skin)-on living tissue • Ex. Iodine or 70% alcohol • Meant to reduce the bacterial load

  13. Antibiotic Resistance

More Related