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Medical Microbiology (Fach) / Environments (Lektion)
Places where microorganisms living in and on us
Diese Lektion wurde von Ricochet erstellt.
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- Skin: conditions dry, acidic, salty, aerobic (pores and folicles may be anoxic)
- Skin: species S.epidermidis, S.aureus
- Skin: pimples 1.Dead cells block an oil gland and form blackheads 2.Bacteria start decomposing material inside 3.propionic acid is produced, inflammatory -> white head produced
- Nasopharynx: Species Staphylococcus aures, Streptococcus pneumoniae
- Oral Cavity:Species Streptococcus salivarius, S.mutans, S.Sobrinus, S.sanguines
- Oral Cavity: conditions before eruption of teeth: aerobic after eruption of teeth: anaerobic
- Oral cavity: Dental plaque 1. glycoproteins form film on teeth -> specific binding of cocci 2. Sucrose -> glucose and fructose 3. fructose fermented into lactic acid 4. glucose into 1-4-alpha-link (not cleavable by us) 5.Biofilm formed, lactic acid erodes enamel (fluoride changes hydroxyapatite to fluroapatite)
- small intestine; colon: Species E.coli, Enterococci
- Small intestine, colon: diseases obesity, inflammatory bowel disease
- Urogenital tract:Vagina species before puberty pH neutral, S.epidermidis after puberty pH acidic, L.acidophiles
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- Urogenital tract: urethra species S.epdidermidis, enterococci diptheroides