Actinomycetes and Associated Bacteria Flashcards
Cornyebacterium diphtherieae Diseases
Actinomycetes and Associated Bacteria
- Diphtheria: inflammation of themucousmembranes, formation of a false membrane in the throat thathinders breathing and swallowing
- Two Types: Pulmonary Diphtheria or Cutaneous Diphtheria
Cornyebacterium diphtherieae Characteristics
Actinomycetes and Associated Bacteria
- Bacilli Club Shaped: Thin on one end and thicker on the other end
- Free living: An organism that is not directly dependent on another organism for survival.
- saprophyte: organisms survive on dead or decaying organic matter
- Gram-Positive: cell wall is thick; purple when stained; killed by penicillin
- Facultative aerobic: Do not prefer oxygen but can go without if forced to
Cornyebacterium diphtherieae Virulence
Actinomycetes and Associated Bacteria
Potent Exotoxin: This toxin causes a pseudomembrane of white/gray thick coating on the throat
Cornyebacterium diphtherieae Portals of Entry and Exit
Actinomycetes and Associated Bacteria
- Respiratory Tract
- Broken Skin or Membranes
Cornyebacterium diphtherieae Modes of Transmission
Actinomycetes and Associated Bacteria
- Indirect: Inhalation of airborne particles
- Indirect: Fomite transmission
- Direct: Droplet Transmission
Mycobacterium tuberculosis Diseases
Actinomycetes and Associated Bacteria
- Tuberculosis: A potentially serious infectious bacterial disease that mainly affects the lungs.
- Two Types
- Pulmonary Tuberculosis
- Miliary Tuberculosis: Tuberculosis leaves the lungs and travels to other organs when tubercles burst
Mycobacterium tuberculosis Characteristics
Actinomycetes and Associated Bacteria
- Bacilli
- Non-motile
- Obligate Aerobic
- Acid Fast Staining
- Very long generation time
- Antiseptic resistant
Mycobacterium tuberculosis Virulence
Actinomycetes and Associated Bacteria
High Lipid Content on Cell Wall/ Waxy Content on Cell Wall
Mycobacterium tuberculosis Portals of Entry and Exit
Actinomycetes and Associated Bacteria
- Respiratory Tract
- GI Tract
- Broken Skin
Mycobacterium tuberculosis Modes of Transmission
Actinomycetes and Associated Bacteria
- Direct: Droplet Transmission
- Indirect: Inhalation of Airborne particles/bacteria
- Indirect: Ingestion
Mycobacterium avium Diseases
Actinomycetes and Associated Bacteria
Opportunistic Form of Tuberculosis (especially among AIDs carriers)
Mycobacterium avium Characteristics
Actinomycetes and Associated Bacteria
- Bacilli
- Acid Fast Staining
Mycobacterium avium Virulence
Actinomycetes and Associated Bacteria
High Lipid Content on Cell Wall/ Waxy Content on Cell Wall
Mycobacterium avium Modes of Transmission and Portal of Entry and Exit
Actinomycetes and Associated Bacteria
- No modes of transmission
- No portals of entry or exit
Legionella pneumophilia Diseases
Actinomycetes and Associated Bacteria
- Legionnaires’s Diseases/Legionellosis (Pneumonia like disease)
- Pontiac Fever (Milder form of Legionellosis)