microbio ch. 24 - digestive system infections

Be familiar with and know how to use properly the key terms given at the beginning of chapter 24.

Be familiar with the components of the upper and lower digestive system.

Bacterial and viral infections of the upper alimentary system:

What disease/condition is associated with Helicobacter pylori infections?

How is the bacterium transmitted?

What body site is affected?

How does the urease enzyme contribute to the ability of the bacterium to survive the acidic conditions of the stomach?

Describe how H. pylori infections can lead to ulcer formation?

What infectious agent is associated with mumps?

How is the agent transmitted?

What symptoms are associated with mumps?

How is the disease treated and prevented?

What are the three main groups of bacteria associated with diseases of the lower alimentary system? 

Which bacteria are classified as Enterobacteriaceae?

How are these bacteria transmitted?

Be familiar with the main pathogenic mechanisms used by bacteria that cause disease in the lower alimentary system.

What bacterium causes cholera?

What symptoms are associated with cholera?

How does the cholera toxin function to produce these symptoms?

How can cholera be prevented and treated?

What bacterial species causes shigellosis?

What are the symptoms of the disease?

How do the bacteria invade and replicate inside intestinal epithelial cells?

What virulence factor is associated with hemalytic uremic syndrome? 

What are the characteristics of this syndrome?

How can shigellosis be prevented/treated?

What are the groups of E. coli that cause gastroenteritis?

What are the two species of Salmonella?

Which species causes gastroenteritis? 

What are the symptoms of salmonella gastroenteritis? 

How is this condition treated/prevented?

Which species causes typhoid fever? 

What are the symptoms of typhoid fever? 

How is typhoid fever treated/prevented?

What food is commonly contaminated with Salmonella?

What disease is associated with Clostridium difficile?

How does antibiotic treatment promote Clostridium difficile infection?

Describe the pathogenesis of Clostridium difficile infection.

What is the epidemiology of Clostridium difficile infection?

How is Clostridium difficile infection prevented/treated?

Viral diseases of the lower digestive system

For rotaviral gastroenteritis and norovirus gastroenteritis, know the following:

What populations are affected by each virus?

What are the symptoms associated with each viral infection?

How is each condition treated/prevented?

For each hepatitis virus, know the following:

What are the symptoms?

How is the virus transmitted?

What are the treatments/prevention?