background preloader

Microorganism

Facebook Twitter

Microbiota: a key orchestrator of cancer therapy : Nature Reviews Cancer. Microbial products (microorganism-associated molecular patterns; MAMPs) and endogenous ligands, often released following tissue damage (damage-associated molecular patterns; DAMPs) interact with membrane-bound and cytoplasmic innate immune receptors regulating nutrition, metabolism, tissue homeostasis, inflammation, innate and adaptive immunity and, to a lesser extent, morphogenesis213, 214, 215, 216, 217.

Microbiota: a key orchestrator of cancer therapy : Nature Reviews Cancer

The gut microbiota promotes platinum cancer therapy by signalling through myeloid differentiation primary response 88 (MYD88), an adaptor for both the Toll-like receptor (TLR) and the interleukin-1 receptor (IL-1R) families61, 62. ? Denotes that the identity of the receptors are yet to be determined. The microbiome in early life: implications for health outcomes : Nature Medicine. Recent studies have characterized how host genetics, prenatal environment and delivery mode can shape the newborn microbiome at birth.

The microbiome in early life: implications for health outcomes : Nature Medicine

Following this, postnatal factors, such as antibiotic treatment, diet or environmental exposure, further modulate the development of the infant's microbiome and immune system, and exposure to a variety of microbial organisms during early life has long been hypothesized to exert a protective effect in the newborn. Furthermore, epidemiological studies have shown that factors that alter bacterial communities in infants during childhood increase the risk for several diseases, highlighting the importance of understanding early-life microbiome composition. In this review, we describe how prenatal and postnatal factors shape the development of both the microbiome and the immune system. Figures. Amoeba. Science - How bacteria make a grappling hook for propulsion.

Zika

Bacteria vs virus. Scientists Capture Sneezes In High-Speed Video. Sneezing is your nose’s way of ejecting any irritants or foreign bodies that have snuck inside it; unfortunately, if you happen to be nearby anyone as you eject the sticky mass out of your nasal cavities, they may get infected with your germs.

Scientists Capture Sneezes In High-Speed Video

As it turns out, scientists know very little about how the ejected phlegm behaves as it rockets forwards. But a team of researchers from the Massachusetts Institute of Technology (MIT) has now mapped out the sequence of shifting shapes that form during sneezing, as reported by BBC News. At a recent meeting of the American Physical Society’s Division of Fluid Dynamics in Boston, Dr Lydia Bourouiba announced that the morphology of the blobs of snot that are launched out of your nose is actually quite complex.

This was revealed after using cameras to track how these pathogen-carrying clumps traveled through the air. Sneezing is a highly effective transmitter of diseases, after all – from the common cold virus to measles or SARS.

Viruses

Second Inexplicable Die Off Of 60,000 Antelopes. Why You Should Stop Using Hand Sanitizer! Watch T Cells Hunt Down And Kill Cancer Cells. Cytotoxic T cells, which researchers describe as ‘serial killers,’ have a pretty important role to play in keeping your body healthy.

Watch T Cells Hunt Down And Kill Cancer Cells

They move rapidly around their environment looking for infected and cancerous cells. Once identified, cytotoxic T cells lock on to their target and kill them. This remarkable process has now been captured on film by researchers from the University of Cambridge using state-of-the-art imaging techniques.

There are billions of cytotoxic T cells in our body, which are the orange or green 'blobs’ in the video below, and they are able to recognize a variety of pathogens through the ‘markers’ on the surface of the cells. These markers, known as antigens, tell the cytotoxic T cells whether the cell is carrying foreign or abnormal molecules. "In our bodies, where cells are packed together, it's essential that the T cell focuses the lethal hit on its target, otherwise it will cause collateral damage to neighboring, healthy cells," says Professor Griffiths.

Should You Hover Or Cover The Toilet Seat?

Anti vaxxers/ vaxxers

Ebola. What The Color Of Your Snot Says About Your Health. Environment, more than genetics, shapes immune system. Why did you get the flu this winter, but your co-workers didn’t?

Environment, more than genetics, shapes immune system

The answer, according to a new study of twins, may have less to do with your genes and more to do with your environment—including your past exposure to pathogens and vaccines. Our immune system is incredibly complex, with diverse armies of white blood cells and signal-sending proteins coursing through our veins, ready to mount an attack on would-be invaders. Everyone’s immune system is slightly different—a unique mixture of hundreds of these cells and proteins. But the main driver of this variation is unclear. Although scientists know that our immune system can adapt to our environment—that’s why vaccines work, for instance—it is also built by our genes. To unravel the competing influences of nature and nurture, researchers led by immunologist Mark Davis of Stanford University in Palo Alto, California, turned to the gold standard test: a twin study. First New Antibiotic In 30 Years Could Prove Crucial In Fight Against Superbugs. Life Would Go On in Hot, Stinky World Without Microbes.

What would happen if there were no microorganisms on the planet?

Life Would Go On in Hot, Stinky World Without Microbes

Life would go on, but it might be permanently bubble-wrapped or smothered by feces—and it definitely wouldn’t last very long. This perspective was published in PLOS Biology this week. To explore the value of microbial services, Jack Gilbert from Argonne National Laboratory and Josh Neufeld from the University of Waterloo wanted to see what would happen in a microbe-free world. 10 Deadliest Diseases in Human History. Superbugs and Antibiotics: Explore with a Dice Game - Science Buddies Blog.

Stopping the course of an antibiotic early is one way that bacteria develop greater resistance to available medicines.

Superbugs and Antibiotics: Explore with a Dice Game - Science Buddies Blog

A new classroom activity, sponsored by Cubist Pharmaceuticals, helps students see how populations of bacteria respond to antibiotics. Using a colorful dice game, students roll the dice to see how many bacteria respond to treatment each day. How much harder is it to kill off a superbug? At the end of the game, the students can tell by looking at the dice that remain! When a doctor prescribes an antibiotic, she probably does so with the warning that you need to make sure you take all of it&emdash;even if you start feeling better before you finish the full course of medicine.

What happens if you chuck the bottle of pills as soon as you are feeling better and get back into your regular routine?