Lecture 2 Flashcards
Where are normal bacterial flora acquired
During birth
Shortly after birth
Do the bacteria stay the same throughout our life
No they change
What can the bacteria present tell us
Age
Nutrition status
Environment of individual
Breastfed children will hve mainly what 2 bacteria in their GIT
Lactic acid streptococcus
Lactobacilli
What is the commets bacteria on our skin
Staphylococcus eperdermidis
Our skin changes in puberty what can lead to increased levels of acne
The bacteria prioionibacterium acnes
Name 2 bacteria associated with the nose and mouth
Streptococci
Gram negative cocci
There are 5 distributions of bacterial phyla what are they
Fermicutes
Bacteriodetes
Actionbacteria
Proteobacteria
Other phyla
How many bacterial phyla are there and how many are dominant
More than 50
4 dominate
What species is there a lack of
Archaeal species
Where is the majority of bacteria found in the body
Inside the gut
The bacteria in the gut what do they contribute to
Harvest energy from food
Normal immune function
What is associated with changes in the microbiome
Bowel disease
Obesity
Bacteriodes and fornicate a constitute how much phyla in the gut
90%
What will the bacteria have in common despite being a different species
Very similar function
What sort of gut metabolism do the gut microbiota do
Carbohydrate and amino acid metabolism
What is the gut considered as
Macro ecosystem
When do microbial communities stop going through changes
When there is a stable community established
How do people in different populations get different gut bacteria
They are exposed to different environmental exposure, adequate sanitation, diet and antibiotic use
Children in Africa on a high fibre diet have levels of
Prototella
What does provotella do
Degrades cellulose and xylans, increase short chain fatty acids and maximal energy extractions
What do children in IS have more of than the children of Africa
Bacteriodes
How do we get bactericides from
Long term diet rich is animal protein and sat fat
