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Enteric Bacterial Diseases

by Vincent Racaniello, PhD
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      Slides 03 EntericBacterialDiseases MicrobiologyAdvanced.pdf
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    Hello and welcome to Enteric Bacterial Diseases. We're going to explore a few different kinds of bacteria that infect the intestinal tract, and after you've listened to this lecture, you'll know the structure and virulence factors produced by bacteria that cause enteric infections. You will be familiar with the pathogenesis and epidemiology of enteric bacterial diseases associated with Vibrio, E. coli, Shigella and Salmonella, and you should know how to treat these enteric bacterial infections. First, we're going to look at a condition called secretory or watery diarrhea, which you and I have had for sure, maybe not caused by bacteria, could be viral, but this is going to be different from diarrhea we will talk about later, which is bloody diarrhea. Secretory watery diarrhea, and we're going to look at members of the Enterobacteriaceae and the vibrionaceae, they're both gram-negative rods, two different kinds of bacteria, one shown on the left, the E. coli, and the one on the right the vibrios. These bacteria are transmitted to humans in contaminated food and water. Contaminated with what? Fecal material of course, either human or from another animal. So in the end, it's all about keeping your food or water clean, which we seem to have problems doing. These bacteria that cause watery diarrhea adhere to the epithelial cells of the gastrointestinal tract. We showed in a previous lecture a slide showing the structure of the wall of the gastrointestinal tract; it's lined with epithelial cells which you can see at the bottom of this slide. And the bacteria we're going to talk about sit on the surface of this epithelium, they don't go in, they don't invade, they're not invasive, they sit on the top and have their effects right there and they adhere via their pili, and those are...

    About the Lecture

    The lecture Enteric Bacterial Diseases by Vincent Racaniello, PhD is from the course Bacteria. It contains the following chapters:

    • Introduction Enteric Bacterial Diseases
    • Enteric Bacteria: Vibrio cholerae
    • Enteric Bacteria: Escherichia coli
    • Enteric Bacteria: Escherichia coli (ETEC)
    • Enteric Bacteria: Escherichia coli (EPEC)
    • Enteric Bacteria: Escherichia coli (EAggEC)
    • Shigella
    • Enterohemorrhagic E. coli (EHEC)
    • Salmonella
    • Clinical Types of Intestinal Infection
    • Enteric Bacterial Diseases: Learning Outcomes

    Author of lecture Enteric Bacterial Diseases

     Vincent Racaniello, PhD

    Vincent Racaniello, PhD


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