Understanding of methane-metabolizing organisms might have to be rethought after researchers announced discovery of two new ones.
"Traditionally, these type of methane-metabolizing organisms occur within a single cluster cluster group of microorganisms called Euryarchaeota. This makes us wonder how many other types of methane-metabolizing microorganisms are out there?" asked Gene Tyson, associate professor and Deputy Head of University of Queensland's Australian Centre for Ecogenomics in the School of Chemistry and Molecular Biosciences.
The identification of a protein that selectively clears damaged chloroplasts from plant cells reveals how plants maintain a "clean workshop" during the process of photosynthesis. Chloroplasts play an important role in transforming light into useable energy for plants, but when these energy powerhouses are damaged, they release harmful substances. When the plant detects this damage, signals are sent to genes involved in chloroplast function and stress adaptation.
At 8 a.m. EDT on October 23, 2015, the National Hurricane Center said that Hurricane Patricia had grown into a monster hurricane. In fact, it is the strongest eastern north pacific hurricane on record. NASA-NOAA's Suomi NPP satellite analyzed the temperatures and structure within the storm as it passed overhead.
On October 23, a Hurricane Warning was in effect from San Blas to Punta San Telmo. A Hurricane Watch was in effect from east of Punta San Telmo to Lazaro Cardenas and a Tropical Storm Warning was in effect from east of Punta San Telmo to Lazaro Cardenas.
A year of treatment with nicotinamide, a form of vitamin B3, significantly lowered the risk of common, non-melanoma skin cancer in high-risk patients, according to a paper in the New England Journal of Medicine.
All 386 participants in the study had a history of skin cancer, increasing their risk for additional skin cancers. Taken as a twice-daily pill for 12 months, nicotinamide reduced the incidence of new non-melanoma skin cancers by 23 percent relative to placebo controls and cut the incidence of pre-cancerous sun spots by around 15 percent.
Researchers don’t always get it right. Scientists used to toiling in obscurity on arcane subjects can be lured into presenting hyperbolic conclusions from a media that demands sensational headlines, and confirmation bias remains a powerful psychological force within the scientific community.
So what does the media do when honest researchers realize their attention-getting findings were simply wrong?
If this case of “bee addiction” is any indicator, the answer is nothing.
Scientists from the Institute of Organic Chemistry and Biochemistry in Prague, Czech Republic, and the Max Planck Institute for Chemical Ecology in Jena, Germany, studied the pheromone chemistry of moths and discovered a new evolutionary mechanism: A single amino acid residue in desaturases − enzymes that introduce double bonds, of the tobacco hornworm Manduca sexta − switches the desaturase products from mono- and di-unsaturated to tri-unsaturated sex pheromone precursors.
Regulation of a family of brain proteins known as bromodomain and extra-terminal domain containing transcription regulators (BETs) plays a key role in normal cognition and behavior, according to a study conducted at the Icahn School of Medicine at Mount Sinai and published advanced online on September 21 and in print October 19 in The Journal of Experimental Medicine.
The Mount Sinai study focuses on epigenetics, the study of changes in the action of human genes caused by molecules that regulate when, where and to what degree our genetic material is activated, rather than focusing on genetic changes in the DNA code we inherit from our parents.
Alva-Amco Pharmacal Companies, Inc. is recommending that parents give their children a placebo - something real doctors would never do. The product they are selling is called Nauzene and they are promoting it for gastroenteritis, the inflammation of the stomach and intestinal tract that can cause nausea, vomiting, diarrhea and abdominal cramping and is commonly called "stomach flu."
The manufacturers say it will relieve upset stomach "without the added risk of salicylates found in some other remedies that can cause health issues in young children." They also say it is paraben-free and Free of artificial flavors or dyes.
A single blood test could reveal whether an otherwise healthy person is unusually likely to die of pneumonia or sepsis within the next 14 years.
Based on an analysis of 10,000 individuals, researchers have identified a molecular byproduct of inflammation, called GlycA, which seems to predict premature death due to infections.
The findings, published October 22 in Cell Systems, suggest that high GlycA levels in the blood indicate a state of chronic inflammation that may arise from low-level chronic infection or an overactive immune response. That inflammation damages the body, which likely renders individuals more susceptible to severe infections.
Like seeds, pollen loses most of its water during maturation, entering a state of suspended animation. This allows it to survive its journey from male to female organs of a flower, where it is rehydrated by sugary fluids secreted by the female organ, and springs into life again.
But rehydrating is a dangerous process, one that can kill the pollen grain before it can fertilize the egg if not properly controlled.
New research from the lab of Elizabeth Haswell, PhD, associate professor of biology in Arts&Sciences at Washington University in St. Louis, shows how pollen survives the reanimation process. A specialized protein with ancient origins helps the hydrating pollen grain relieve excessive pressure and survive the stressful transition.
Rapid or significant weight loss through dieting can trigger bone loss. Loss of bone density, in turn, can lead to increased susceptibility to bone fractures in older adults, which can have a debilitating effect on quality of life.
The bone loss is most concerning in people whose weight fluctuates due to "yo-yo" dieting, or repeated cycles of weight gain and loss, because bone lost during weight loss is not typically regained when the person gains weight again, said Urszula Iwaniec, an associate professor in the College of Public Health and Human Sciences at Oregon State University.
A study published today shows that a newly studied class of water contaminants that is known to be toxic and hormone disrupting to marine animals is present likely due in part to indirect effects of human activity. The contaminants are more prevalent in populated areas in the San Francisco Bay, suggesting that human impacts on nutrient input or other changes in water quality may enhance natural production.
A paper in PLOS ONE says humans may have an indirect effect on water quality.
Lives lost without nuclear medicine-->
You’ve probably had subscriptions to newspapers, magazines, or even Netflix. Fairly recently the subscription box has emerged like Loot Crate, filled with Sci-Fi/Fantasy/Comic book themed T-shirts, mugs, minifigures and such. Now there’s a subscription box chemistry set from MEL Science.
“We have reinvented educational chemistry sets for kids,” says Vassili Philippov, CEO of Mel Science. “It includes chemical reagents for real experiments, a mobile app, and a virtual reality headset to let you visualize molecules in 3D.”-->
Computers have scanned aerial photographs and conducted the first automated mass-crowd count in the world, thanks to the work of researchers at the University of Central Florida.
Counting large-scale crowds has been a long, tedious process involving people examining aerial photographs one at a time - and it has been termed accurate, with organizers often claiming results 1000% greater than police and journalists. They are able to make claims and stick to them because the traditional method involves dividing photographs into sections and counting the number of heads per inch.
Bee colonies had a decline in 2006, and a decade earlier, and lots of times going back as far as people kept count of bees, but activists most recently blamed a group of pesticides called neonicotinoids, and ignored climate and parasites, the thing that scientists said made the difference in periodic blips.
Regardless of the consensus, a team of scholars in Environmental Science&Technology blame these "neonics" and claim past studies may have underestimated the bees' exposure to the compounds.
Heart valve replacements made from tissue (bioprosthetic valves) have long been thought to be spared the complication of blood clot formation. Researchers have now found that about 15 percent of all bioprosthetic aortic heart valve patients develop blood clots on the leaflets affecting valve opening, regardless of whether the patient received the new valve via open-heart surgery or a minimally-invasive catheter procedure, a new study from the Cedars-Sinai Heart Institute shows.
The study, published online today by the New England Journal of Medicine and scheduled for the Nov. 26 print edition, also shows that anti-coagulant medications such as Warfarin quickly resolve the clotting issue for all patients, regardless of the type of valve or procedure.