This Week in Microbiology

TWiM 25: Magnetotactic bacteria and totally drug resistant TB

January 25, 2012

Hosts: Vincent Racaniello, Michael Schmidt, and Elio Schaechter

On episode #25 of the podcast, Vincent, Elio, and Michael review bacteria that use the earth’s magnetic field for navigation, and identification of totally drug resistant Mycobacterium tuberculosis.

Download TWiM #25 (53 MB, .mp3, 77 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Send your microbiology questions and comments to [email protected]

TWiM 24: This year in microbiology

January 11, 2012

Hosts: Vincent Racaniello, Michael Schmidt, and Cliff Mintz

On episode #24 of the podcast, Vincent, Michael, and Cliff review ten compelling microbiology stories from 2011.

Ten Microbiology stories from 2011:

Bean sprouts and E. coli O104H4 (TWiM 9, 20)
H. pylori and asthma (TWiM 11)
Airborne H5N1 influenza (TWiV 159)
The microbiome (TWiM 2, 15, 19)
Synthetic biology (TWiM 12)
Probiotics (TWiM 24)
Symbiosis (TWiM 8, 10, 17, 21)
Turning E. coli into a pathogen (TWiM 18)
Mammalian endothermy restricts fungi (TWiM 16)
Microbiology 911 (TWiM 22)

Download TWiM #24 (57.5 MB, .mp3, 79 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Body odor may explain mosquito preference
Skin microbiota and attractiveness to mosquitos (PLoS One)
Letters read on TWiM #24

Send your microbiology questions and comments to [email protected]

TWiM 23: Fighting antibiotics with toxic gas and starvation

December 28, 2011

Hosts: Vincent Racaniello, Michael Schmidt, Jo Handlesman, and Elio Schaechter

On episode #23 of the podcast, Vincent, Jo, Elio, and Michael explain how a swarming bacterium helps disperse a non-motile fungus, and bacterial antibiotic tolerance mediated by hydrogen sulfide and starvation responses.

Download TWiM #23 (52.5 MB, .mp3, 76 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Paenibacillus carries Aspergillus (PNAS)
Hydrogen sulfide: a defense against antibiotics (Science)
Starvation responses to mediate antibiotic tolerance (Science)
Antioxidant strategies to tolerate antibiotics (Science)
Eshel Ben-Jacob’s Microbial Art
Submit a topic for ASM GM 2012
Letters read on TWiM #23

Send your microbiology questions and comments to [email protected]

TWiM 22: Microbiology 911

December 14, 2011

Hosts: Vincent Racaniello, Michael Schmidt, and Al Sacchetti

On episode #22 of the podcast This Week in Microbiology, Vincent and Michael speak with Alfred Sacchetti, MD, Chief of Emergency Services at Our Lady of Lourdes Medical Center, about microbial infections encountered in the emergency room.

Download TWiM #22 (48 MB, .mp3, 98 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Al Sacchetti wins 2010 ACEP Award
A pathogen’s Swiss army knife (Small Things Considered)
S. aureus: Superbug, supergenome? (Trends in Micro)
Letters read on TWiM #22

Send your microbiology questions and comments to [email protected]

TWiM 21: Symbiotic margheritas

November 30, 2011

Hosts: Vincent Racaniello and Elio Schaechter

On episode #21 of the podcast This Week in Microbiology, Vincent and Elio discuss an ancient symbiosis between Alphaproteobacteria and catenulid flatworms, and a toxin from Helicobacter pylori that engages the mitochondrial fission machinery to induce host cell death.

Download TWiM #21 (50 MB, .mp3, 68 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Paracatenula, an ancient symbiosis (PNAS)
Review on symbiotic diversity in marine animals (Nat Rev Micro)
Helicobacter pylori vacuolating cytotoxin A (PNAS)
Review of H. pylori VacA (Nat Rev Micro)
Viral desserts (Virus Talk)
Letters read on TWiM #21

Send your microbiology questions and comments to [email protected]

TWiM 20: Facebook for bacteria

November 16, 2011

Hosts: Vincent Racaniello, Michael Schmidt, and Elio Schaechter

On episode #20 of the podcast This Week in Microbiology, Vincent, Michael, and Elio follow up on the outbreaks of E. coli in Germany and cholera in Haiti, then discuss genes that confer self-identity to Proteus mirabilis.

Download TWiM #20 (49 MB, .mp3, 68 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

German outbreak of E. coli O104:H4 associated with sprouts (NEJM)
South Asia not Nepal may be source of Haitian cholera strain (mBio)
Identity gene expression in Proteus mirabilis (J. Bacteriol.)
Proteus swarm movie (YouTube)
Proteus moves at a speed of 4 x 10-5 mph
Education resources at ASM
Letters read on TWiM #20

Send your microbiology questions and comments [email protected]

TWiM 19: Your microbiome is what you eat

November 2, 2011

Hosts: Vincent Racaniello, Michael Schmidt, Elio Schaechter and Jo Handelsman

On episode #19 of the podcast This Week in Microbiology, Vincent, Michael, Elio, and Jo discuss the genome sequence of Y. pestis from victims of the Black Death, and the effect of diet on gut microbial enterotypes.

Download TWiM #19 (43 MB, .mp3, 60 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Yersinia pestis genome sequence from Black Death victims (Nature)
Black Death genome fished out of East Smithfield (Contagions)
Brief primer on Yersinia
Dietary patterns and gut microbial enterotypes (Science)
The guts of dietary habit (Science)
Review of human gut microbiome (Ann Rev Micro)
Letters read on TWiM #19

Send your microbiology questions and comments to [email protected]

TWiM 18: Escherichia coli K-12, an emerging pathogen?

October 19, 2011

Hosts: Vincent Racaniello, Michael Schmidt, Stanley Maloy and Elio Schaechter

On episode #18 of the podcast This Week in Microbiology, Vincent, Michael, Elio, and Stanley explain how to make the human intestinal commensal and benign laboratory bacterium Escherichia coli K-12 into an invasive organism, and the unearthing of century-old spores in New York City.

Download TWiM #18 (54 MB, .mp3, 74 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Send your microbiology questions and comments to [email protected]

TWiM 17: Debugging endosymbiosis

October 5, 2011

Hosts: Vincent Racaniello, Michael Schmidt, and Elio Schaechter

On episode #17 of the podcast This Week in Microbiology, Vincent, Michael and Elio focus on endosymbiosis: the rapid spread of Rickettsia in whitefiles, and a metabolic patchwork in nested symbionts of mealybugs.

Download TWiM #17 (51 MB, .mp3, 70 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Nested symbiosis in mealybugs (Curr Bio)
A bug in a bug in a bug (STC)
Rapid spread of an endosymbiont in whitefly (Science)
Instant evolution in whiteflies (UANews)
Letters read on TWiM #17

Send your microbiology questions and comments to [email protected]

TWiM 16: ICAAC Live

September 22, 2011

Hosts: Vincent Racaniello, Michael Schmidt, Arturo Casadevall, Stuart Levy, and David Livermore

On episode #16 of the podcast This Week in Microbiology, Vincent, Michael, Arturo, Stuart, and David converse about antimicrobial resistance and why most fungi do not cause disease at the 51st Interscience Conference on Antimicrobial Agents and Chemotherapy (ICAAC).

Download TWiM #16 (65 MB, .mp3, 90 minutes).

Subscribe to TWiM (free) on iTunes, via RSS feed, by email or listen on your mobile device with the Microbeworld app.

Links for this episode:

Need for new antibacterials (J Antimicr Chem)
Consumer antibacterial soaps (Clin Inf Dis)
Endothermy and fungal growth (mBio)
Bat white-nose syndrome (Microbe)
Chytrid fungus in amphibians

Send your microbiology questions and comments to [email protected]

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TWiM 25: Magnetotactic bacteria and totally drug resistant TB

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TWiM 24: This year in microbiology

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TWiM 23: Fighting antibiotics with toxic gas and starvation

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TWiM 22: Microbiology 911

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TWiM 21: Symbiotic margheritas

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TWiM 20: Facebook for bacteria

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TWiM 19: Your microbiome is what you eat

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TWiM 18: Escherichia coli K-12, an emerging pathogen?

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TWiM 17: Debugging endosymbiosis

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TWiM 16: ICAAC Live

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