Once Pseudomonas aeruginosa colonizes the lungs of a cystic fibrosis patient, it begins transforming itself from a squatter into a fully-invested resident, eventually establishing a chronic airway infection. A study just released by mBio tracked the gene expression patterns of P. aeruginosa dur... Read More
This episode: Discovery of (rather pretty) giant archaea!
Parasites such as Toxoplasma gondii invade host cells, replicate and then must exit to find new host cells to invade. Traveling outside their host cell exposes the parasites to environmental stresses that limit how long they can remain viable while searching for new host cells.
The researcher... Read More
Researchers from the Australia’s University of Ballarat have dispelled an urban myth by showing banknotes do not carry dangerous levels of bacteria.
But they found polymer banknotes, such as those used in Australia, carry the least quantity of contamination.
Australia's notes are manufactu... Read More
Global warming may have one minor but previously unknown benefit, scientists said this month: it may be cutting down cases of bubonic plague in the United States.
About 10 to 20 Americans catch plague each year, and 1 to 3 die of it, according to the Centers for Disease Control and Preventio... Read More
An examination of a portion of the tuberculosis genome that responds to stress has allowed Rice University bioengineers Oleg Igoshin and Abhinav Tiwari to zero in on a network of genes that may "switch" the disease into dormancy.
The bacteria that cause tuberculosis (TB), Mycobacterium tuberc... Read More
The list of ways for life to make a living keeps getting longer. There are the obvious: like turning light into chemical energy like plants do. Or eating plants like many animals do.
Then there are more specialist methods: for example, pairing the hydrogen produced by radioactive decay with s... Read More
There's been a lot of talk recently about NDM-1, a gene that gives many bacteria a weapon against carbapenems, an important class of antibiotics. Because many of these bacteria are already resistant to other classes of antibiotics, NDM-1 renders them immune to almost anything we throw at them. ... Read More
Every choice has its trade-offs, and while the advantages of many choices are easy to discern, other situations require closer analysis. In a paper just released by mBio, scientists have modeled the economic trade-offs involved in putting genes in an operon, and they’ve shed some light on why i... Read More
Three cheers for Dr. Racaniello!!!
by Camp Connell Steve - Feb 28, 2011
Dr. Racaniello has launched his third superb podcast! Having listened to all the This Week in Virology and This Week in Parasitism podcasts, I awaited with anticipation when he announced h... Read More
2nd favorite podcast right after twiv
Even my 14 & 18 year old st... Read More
TWiV listeners have spent their valuable time writing comments about the podcast on iTunes, and it's a shame that most people don't see them. I'm putting them here as a way of thanking them for their time, and for listening. This i... Read More
Basidiobolus haposporus. Adhesive spores forcibly discharged and attached to cover of a petri dish. Lactophenol cotton blue stain Read More
Parasitic worm colonies are known to invade and castrate a tiny California horn snail, spawning thousands of tiny soldiers that take up 25% of the snail's body weight. These tiny warriors could actually revolutionize how we fight infections in humans.
As much as these colonies are bad news fo... Read More
As scientists with the federal government search for the source of the salmonella that made thousands of people sick this summer and trace how it spread, researchers in Penn State's College of Agricultural Sciences are developing a new and more accurate method of acquiring the bacteria's identit... Read More
A flu shot can do more than just fight against influenza, a new study suggests. It may also fight against heart attacks.
Adults who take the flu vaccine may be less likely to get their first heart attack the next year, researchers say.
The study, published Monday in the Canadian Medical As... Read More
New research on the immune system’s response to plague could improve efforts to vaccinate the public against the world’s oldest form of biological warfare.
Researchers have been working for several years to develop a vaccine for weaponized forms of plague, which is one of the world’s deadlies... Read More
Scientists fear migratory birds may be spreading hard-to-treat infections after discovering seagulls can carry antibiotic-resistant bacteria. Portuguese researchers analysed 57 samples of droppings from the yellow-legged Caspian Gull Larus Cachinnans. They found that one in 10 harboured bacteria... Read More
Back in 1984, a young Australian doctor called Barry Marshall swallowed a nasty-tasting solution of bacteria. This was no accident. He did it to convince his peers that his suspicions about a highly prevalent disease were not as far-fetched as they thought.
In 1981, Marshall had met patholog... Read More
Childhood obesity is not only an epidemic, it may be an infectious disease transmitted by a common cold virus, a new study suggests.
Children exposed to adenovirus-36 were more likely to be obese than were children who had no evidence of infection, according to a study published online Septem... Read More