Flashcards
Commensal flora
Cards in this deck (11)
- 1What are commensal flora?Beneficial/harmless/opportunistic pathogens
Can exclude pathogens
Break down indigestible food - 2Give 2 examples of pathogens that are excluded by commensal floraCandida albicans - thrush after antibiotic treatment
Clostridium difficile - diarrhoea after antibiotic treatment kills of beneficial gut flora so can est itself - 3Give an example of evidence to support the idea of commensal flora breaking down indigestible foodNotobiotic mice gain weight faster than non-sterile ones - gut flora harvests additional nutrients
- 4Example of probiotic speciesLactobacillus acidophilus
- 5What does bifidobacterium do?Decrease lactose intolerance
Reduce serum cholesterol
Anticancer activity - 6What do streptococci do and where are they found?Opportunistic pathogen in the mouth
Endocarditis if enters bloodstream of someone w/ heart problems - 7What does Haemophilus influenzae do and where is it found?Meningitis if enters bloodstream and crosses blood-brain barrier
Nose - 8What does Pseudomonas aeruginosa do and where is it found?CF/immunocompromised: lung infections
Burn wounds
Skin and bowel - 9What is the Gram positive pili important for?Bacterial adhesion
Colonisation
Invasion of host tissues
Biofilm formation
Translocation across host membranes - 10What is an example of a bacterium that uses the Gram positive pili and what does it do?Streptococcus pneumoniae
Community-acquired pneumonia (main cause)
Meningitis
Bacteremia
Middle-ear infection - 11—
Information
- Description
- Flashcards on Commensal flora, created by Sophie Byrne on 06/10/2018.
- Created by
- Sophie Byrne
- Views
- 8
- Tags
- Rating