MBIO 1010 Lecture Notes - Lecture 25: Phagocytosis, Streptolysin, Lipid A
28 Dec 2017
School
Department
Course
Professor
Document Summary
Outline: the human microbiome, microflora of the human body, the role of gut microorganisms in obesity. Note: memorize the numbers above: colonization: begins immediately after birth, diversity of species present varies greatly between individuals. Where does the microbiota live: every exposed area of the body is colonized by bacteria i. e. skin and mucous membranes internal tissues should be free of microbes i. e. blood, muscles, organs (heart, liver etc) 23. 2 examples of bacteria that live on the skin: dry skin (ex. Armpits, nostrils: high numbers of corynebacteria and staphlylococci, most are harmless commensals, ex: staphylococcus epidermidis, most frequently isolated from skin not problematic, some are important pathogens, ex. Staphylococcus aureus: cause of boils, abscesses, wound infections, mrsa, can start local and then travel to be widespread around the body, sebaceous skin (ex. The stomach: low ph and proteolytic enzymes make the stomach inhospitable to most microbes, some bacteria do colonize the stomach, ex.
