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TWiM #137: The battle for oxygen

Highlights of the Recent Advances in Microbial Control meeting in San Diego, and expansion of a gut pathogen by virulence factors that stimulate aerobic respiration.


Vincent Racaniello, <... Read More

TWiM 137 Letters

Daniel writes:

Long time listener, first time writer. It has been far too long for me to offer my sincere gratitude for the podcasts. Some years ago I was a welder working a very boring job and I managed to get through my day by listening to podcasts and l... Read More

MWV 107 - The Necrobiome: Microbial Life After Death

What happens to us after we die?  A decomposing corpse becomes its own mini-ecosystem, hosting insects, scavengers and multitudes of microbes.  Microbes from the environment, the corpse, as well as the insects and scavengers are blended together and work to recycle tissues back to t... Read More

The Sleeping Monsters in your Mouth

The oral cavity is wet, warm and nutrient rich. These characteristics allow microorganisms to flourish -- however they are normally kept in check by the host. Oral diseases like periodontitis are mediated by bacteria. Curiously, it is not a single bacterium that is the cause of disease, but a... Read More

New science museum exhibit explores 'the secret world' inside us

The N.C. Museum of Natural Sciences in downtown Raleigh opens a new special exhibit this weekend that explores the secret world inside all of us.

"The Secret World Inside You" uses larger-than-life models, computer interactives, videos and art installations to explore the evolving science tha... Read More

There’s a breast microbiome, and it’s different in women with breast cancer

In one of the most recent studies involving the microbiiome, researchers from the Mayo Clinic have identified significant differences in the breast bacteria of women with and without breast cancer.

The paper, published in the journal Scientific Reports, reveals that inside the breast is a com... Read More

Where Zika Struck Hardest, Brazil Moms Say More Help Needed

Zika initially was known only to cause flu-like symptoms in some people. But a surge late last year in cases of babies born with small heads in northeast Brazil set off worldwide alarm about the virus, which was later linked to a birth defect known as microcephaly. When the connection was made, ... Read More

Zika Virus Found in Woman's Vagina for Weeks

A woman infected with Zika carried the virus in her vagina for weeks, researchers reported Tuesday.

It's yet more evidence that the virus can hang out in the human body for weeks or months after symptoms have cleared up. The findings, rushed online by the journal Emerging Infectious Diseases,... Read More

Zika virus detected in ‘a few’ units of donor blood in Florida

Zika virus has been detected in units of donated blood in Florida, federal health officials said Tuesday.

But the number so far is small, and new testing in high-risk areas kept the virus from entering the U.S. blood supply.

Food and Drug Administration officials confirmed that “a few” uni... Read More

Microbes After Hours: The Necrobiome - Microbial Life After Death

What happens to us after we die?  A decomposing corpse becomes its own mini-ecosystem, hosting insects, scavengers and multitudes of microbes.  Microbes from the environment, the corpse, as well as the insects and scavengers are blended together and work to recycle tissues back to t... Read More


Physarum polycephalum, slime mold, grown in a large perti plate on moist paper towels using oatmeal as the food source. Culture was grown in the dark at room temperature. The paper towel was moistened every day with tap water. After 3 week’s the culture formed sporangia (fruiting bodies). Image ... Read More

UC Davis researchers hope monkeys can aid Zika vaccine development

At first glance, the monkeys being studied by University of California, Davis researchers may look like they’re part of a zoo exhibit, but these primates may soon hold the key to preventing pregnant women from passing the Zika virus to their unborn babies.

Click "source" for more. Read More

Your next migraine might be thanks to your mouth microbes

When Antonio Gonzalez began doctoral studies in Rob Knight’s laboratory, then at University of Colorado, Boulder, the computer scientist quickly learned about microbes and their connection to human health. He soon found a connection to his wife’s health jumping out of the literature at him.

H... Read More

Migraine Sufferers Have Higher Levels of Nitrate-reducing Microbes in their Mouths

Washington, DC – October 18, 2016 – Researchers at the University of California San Diego School of Medicine (UC San Diego) have found an association between migraines and microbes that reduce nitrates. Analyzing data from the American Gut Project, they found that migraine sufferers harbored sig... Read More

Seeking understanding of the bacterial sec system

How do bacterial proteins destined for export move from inside to outside the cell? As mBiosphere readers may know, there are a number of secretion systems that bacteria use to move materials from inside the cell to outside the cell. Some of these systems, such as the Sec secretion system, are c... Read More

A promising step toward controlling Zika virus and dengue fever

Five UCLA researchers were part of an international team that has used X-rays to reveal the structure of a molecule that is toxic to disease-carrying mosquitoes. The findings move the scientific world one step closer to genetically engineering a toxin that would be lethal to species that carry d... Read More

Dr House goes digital as IBM’s Watson diagnoses rare diseases

Medics charged with diagnosing the kind of extremely rare diseases that Hugh Laurie’s consultant routinely spots in TV drama House have found that artificial intelligence can do a similar job – but in seconds rather than days or weeks.

From December, doctors at the University Hospital of Marb... Read More

Post-Ebola Recovery in Sierra Leone

Advancing Partners & Communities is excited to launch part one of a two-part compelling, original video series showcasing the work in Sierra Leone to improve primary health care services at health posts and community levels. This first video focuses on the efforts needed to rebuild these service... Read More

Oxidase Test

The oxidase test is performed using a reducing agent to detect bacteria’s ability to produce cytochrome c oxidase, an enzyme in the electron transport chain. The reducing agent (N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD)) changes or produces a purple color as it become oxidized. Pseudom... Read More

Catalse Test on S. aureus

Organisms that have the catalase enzyme can detoxify the cell of hydrogen peroxide by converting it to oxygen gas. Bubbles indicate oxygen gas production after the addition of hydrogen peroxide directly to colonies growing on the TSA plate.
Read More
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