Actinomycetes and Associated Bacteria Flashcards

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1
Q

Cornyebacterium diphtherieae Diseases
Actinomycetes and Associated Bacteria

A
  • Diphtheria: inflammation of themucousmembranes, formation of a false membrane in the throat thathinders breathing and swallowing
  • Two Types: Pulmonary Diphtheria or Cutaneous Diphtheria
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2
Q

Cornyebacterium diphtherieae Characteristics
Actinomycetes and Associated Bacteria

A
  • 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
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3
Q

Cornyebacterium diphtherieae Virulence
Actinomycetes and Associated Bacteria

A

Potent Exotoxin: This toxin causes a pseudomembrane of white/gray thick coating on the throat

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4
Q

Cornyebacterium diphtherieae Portals of Entry and Exit
Actinomycetes and Associated Bacteria

A
  • Respiratory Tract
  • Broken Skin or Membranes
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5
Q

Cornyebacterium diphtherieae Modes of Transmission
Actinomycetes and Associated Bacteria

A
  • Indirect: Inhalation of airborne particles
  • Indirect: Fomite transmission
  • Direct: Droplet Transmission
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6
Q

Mycobacterium tuberculosis Diseases
Actinomycetes and Associated Bacteria

A
  • Tuberculosis: A potentially serious infectious bacterial disease that mainly affects the lungs.
  • Two Types
    1. Pulmonary Tuberculosis
    2. Miliary Tuberculosis: Tuberculosis leaves the lungs and travels to other organs when tubercles burst
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7
Q

Mycobacterium tuberculosis Characteristics
Actinomycetes and Associated Bacteria

A
  • Bacilli
  • Non-motile
  • Obligate Aerobic
  • Acid Fast Staining
  • Very long generation time
  • Antiseptic resistant
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8
Q

Mycobacterium tuberculosis Virulence
Actinomycetes and Associated Bacteria

A

High Lipid Content on Cell Wall/ Waxy Content on Cell Wall

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9
Q

Mycobacterium tuberculosis Portals of Entry and Exit
Actinomycetes and Associated Bacteria

A
  • Respiratory Tract
  • GI Tract
  • Broken Skin
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10
Q

Mycobacterium tuberculosis Modes of Transmission
Actinomycetes and Associated Bacteria

A
  • Direct: Droplet Transmission
  • Indirect: Inhalation of Airborne particles/bacteria
  • Indirect: Ingestion
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11
Q

Mycobacterium avium Diseases
Actinomycetes and Associated Bacteria

A

Opportunistic Form of Tuberculosis (especially among AIDs carriers)

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12
Q

Mycobacterium avium Characteristics
Actinomycetes and Associated Bacteria

A
  • Bacilli
  • Acid Fast Staining
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13
Q

Mycobacterium avium Virulence
Actinomycetes and Associated Bacteria

A

High Lipid Content on Cell Wall/ Waxy Content on Cell Wall

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14
Q

Mycobacterium avium Modes of Transmission and Portal of Entry and Exit
Actinomycetes and Associated Bacteria

A
  • No modes of transmission
  • No portals of entry or exit
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15
Q

Legionella pneumophilia Diseases
Actinomycetes and Associated Bacteria

A
  • Legionnaires’s Diseases/Legionellosis (Pneumonia like disease)
  • Pontiac Fever (Milder form of Legionellosis)
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16
Q

Legionella pneumophilia Characteristics
Actinomycetes and Associated Bacteria

A
  • Bacilli
  • Grows in warm water (cooling towers, faucets, shower heads etc)Legionella pneumophilia Modes of Transmission
17
Q

Legionella pneumophilia Virulence
Actinomycetes and Associated Bacteria

A

Unique Lipids in the bacterial cell wall

18
Q

Legionella pneumophilia Portals of Entry and Exit
Actinomycetes and Associated Bacteria

A

Respiratory Tract

19
Q

Legionella pneumophilia Modes of Transmission
Actinomycetes and Associated Bacteria

A
  • Indirect: Airborne Transmission
  • Noncommunicable disease
20
Q

Listeria monocytogenes Diseases
Actinomycetes and Associated Bacteria

A

Listeriosis/Listeria

21
Q

Listeria monocytogenes Characteristics
Actinomycetes and Associated Bacteria

A
  • Gram-Positive
  • Non-Spore Forming
  • Food-borne Pathogen
  • Bacilli
  • Pleomorphic
  • Psychrophile: grows in refrigeration temperatures
22
Q

Listeria monocytogenes Virulence
Actinomycetes and Associated Bacteria

A

Unique lipids in bacterial cell wall

23
Q

Listeria monocytogenes Portals of Entry and Exit
Actinomycetes and Associated Bacteria

A
  • GI Tract
  • Placenta
24
Q

Listeria monocytogenes Modes of Transmission
Actinomycetes and Associated Bacteria

A
  • Indirect: Ingestion
  • Direct: Placental Transmission