Diseases of the Gastointestinal Tract

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Diseases of the Gastointestinal Tract

• Anatomy and Physiology
• Normal Flora
• Immune Mechanisms
• Infectious Diseases
• -Upper GI tract
• -Bacterial
• -Viral
• -Fungal
• -Lower GI tract
• -Bacterial
• -Viral
• -Fungal

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The GI Tract
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Diseases of the Gastointestinal Tract

• Anatomy and Physiology
• Normal Flora
• Immune Mechanisms
• Infectious Diseases
• -Upper GI tract
• -Bacterial Tooth decay and periodontal
  disease,
• Stomach ulcers Helicobacter pylori
• Food poisoning S. aureus, B. cereus
• -Viral Mumps (A paramyxovirus)
• Herpes simplex virus
• -Fungal C. albicans
• -Lower GI tract
• -Bacterial
• -Viral
• -Fungal

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Plaque
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Plaque formation
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Gumsa) Normalb) Gingivitis
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Acute necrotizing ulcerative gingivitis (ANUG)
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Helicobacter pylori
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Formation of Stomach ulcers
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Herpes simplex
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Herpes Latency
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V. cholera
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Diseases of the Gastointestinal Tract

• Anatomy and Physiology
• Normal Flora
• Immune Mechanisms
• Infectious Diseases
• -Upper GI tract
• -Bacterial
• -Viral
• -Fungal
• -Lower GI tract
• -Bacterial Gastroenteritis E. coli,
  Salmonella sp.
• Dysenterry Shigella dysenteriae,
  Campylobacter sp., E. coli
• Diarrhea Vibio cholera, E. coli
• Typhoid fever Salmonella typhi
• -Viral Gastroenteritis Rotaviruses,
  Noroviruses, Enteroviruses
• Hepatitis Hepatitis viruses A - E
• -Fungal Aflatoxins
• -Protozoal Giardia sp.

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Shigella infection
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Campylobacter sp.
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Cholera toxin
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Rotavirus
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Norwalk virus
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Hepatitis A (2001)
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Hepatitis B virus
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Hepatitis BLife cycle
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Giardia l.
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