CU-Boulder EBIO 3400 - Small Intestine v. Large Intestine (4 pages)

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Small Intestine v. Large Intestine



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Small Intestine v. Large Intestine

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Different micro-biomes and effects


Lecture number:
20
Pages:
4
Type:
Lecture Note
School:
University of Colorado at Boulder
Course:
Ebio 3400 - Microbiology
Edition:
1
Documents in this Packet

Unformatted text preview:

EBIO 3400 1st Edition Lecture 20 Outline of Last Lecture I The Human Microbiome II Early Observations III The Human Microbiome Cont IV Skin V Mouth VI Stomach Outline of Current Lecture VII VIII IX X XI Small Intestine v Large Intestine Bacterial prevalence Germ free or gnotobiotic mice Intestine s microbial population Proteobacteria Current Lecture I Small Intestine v Large Intestine Small intestine Some bacteria reside that have low pH short transit time antimicrobial compounds A Large Intestine long transit time 10 100 hours anaerobic 1 2 kg of microbes 1000 bacterial and archaeal species most uncultivable undescribed 60 of fecal mass microbial cells 1010 cells per g feces 1000 anaerobes e g Bacteroides thetaiotaomicron 1 aerobe e g Escherichia coli Mostly obligate oxygen kills it lethal anaerobic as seen in the Firmicutes and Bacteroidetes B More efficient through microbes to break down energy C E Coli plays a role in recycling the products and materials that we naturally produce These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute II Bacterial prevalence A Only 13 of palm bacterial species are shared between any two individuals B Identify keyboards by their owners Bacteria helps with forensic tools Can get different communities of microbes from touching a keyboard C Natural vaginal birth or C section delivery Depending on the delivery of the infant natural or c section Infants in the womb are sterile no associated microbiome first inoculum comes from the mother first source of microbial community Skin and vaginal microbiomes are very different Infants delivered more naturally inherent are inoculated with large component microbiome of the vaginal canal Infants from C section are devoid of those types of microbes and have more skin microbiome Very different microbiome when an infant than when an adult Lack of microbiome that usually come from natural delivery



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