micro chapter 25 2015 - Microbial Diseases of the Digestive...

Info icon This preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon
Microbial Diseases of the Digestive System
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The Human Digestive System
Image of page 2
Normal Microbiota The mouth : millions!!! Millions of bacteria per ml of saliva The stomach : Sterile !!! The small Intestine: Just a few !!!! The large Intestine : Billions and Billions 100 billion bacteria per gram of feces Anaerobes: Lactobacillus and Bacteroides Facultative anaerobes: Enterics
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Bacterial Diseases of the Mouth Dental Carries Dental plaque most cariogenic bacteria is Streptococcus mutans Periodontal disease Gingivitis Periodontitis Acute narcotizing ulcerative gingivitis also called Vincent’s Disease or trench mouth
Image of page 4
Bacterial Diseases of the Mouth Disease Pathogen Dental caries Streptococcus mutans Periodontal disease Porphyromonas spp. Acute necrotizing gingivitis Prevotella intermedia
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
A Healthy Human Tooth
Image of page 6
The Stages of Tooth Decay
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The Stages of Periodontal Disease
Image of page 8
Diseases of Lower Digestive System Infection : Growth of a pathogen Incubation is from 12 hours to 2 weeks Fever Intoxication : Ingestion of toxin Symptoms appear 1 to 48 hours after ingestion Gastroenteritis : Diarrhea, dysentery Treatment : Oral rehydration therapy
Image of page 9

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Staphylococcal Food Poisoning Also called Staphylococcal enterotoxicosis Caused by Staphylococcus aureus Incubation of Staph aureus on food is called temperature abuse Staph aureus also produces toxins which are not destroyed by cooking
Image of page 10
Staphylococcal Food Poisoning Pathogen Staphylococcus aureus Symptoms Nausea, vomiting, and diarrhea Intoxication/Infection Intoxication Enterotoxin (superantigen) Diagnosis Phage typing Treatment None
Image of page 11

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 12
Image of page 13

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Shigellosis (Bacillary Dysentery) Pathogen Shigella sonei Shigella dysentaria Symptoms Tissue damage and dysentery Intoxication/Infection Infection Endotoxin and Shiga exotoxin Diagnosis Isolation of bacteria Treatment Quinolones
Image of page 14
Typhoid Fever Caused by Salmonella typhi Only found in human and their feces Fever and severe diarrhea Associated with poor sanitation and sewage treatment A substantial number of recovered patients become carriers Salmonellosis Salmonella enterica Symptoms 12-36 hours after infection Associated with chicken, eggs and reptiles
Image of page 15

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 16
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern