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Tag: "over" at biology news

A gene's first 'kiss' sets off that affair known as puberty

...instigates the cascade of hormone secretions that, over time, produces puberty's tell-tale physical changes, including the development of breasts in girls and voice change in boys. As such, this research begins to answer one of the most vexing questions about human development: What causes puberty to begi...

Bioartificial kidney under study at MCG

...re from 50 to 70 percent of those patients die and over the past 20 years, despite dialysis, that has not ... underway is looking at the efficacy of the device over 72 hours, although researchers say that if the device is eventually approved by the Food and Drug Ad...

New push for public health, AIDS spending at African Union summit

...orts included. Controversial drug trials, battles over patents and the fate of millions of orphans are also likely to be discussed at a summit session devoted to the fight against AIDS on the world's poorest continent, home to nearly two-thirds of the 39.4 million people worldwide infected with HIV or AI...

Man and mouse share genome structures

...e yeast. Unexpectedly, they also found tags idling over regions near genes. The researchers think these si...tein is the unusual density of histone tags spread over the regions of genome containing the HOX genes, which are key regulators of development. "In most o...

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...ccur; fluid flow may therefore repeat episodically over hundreds of thousands of years as abyssal hills are uplifted and spread away from the mid-ocean ridge crest. Haymon compared the subsurface microbes they found to those living in hot springs such as those at Yellowstone National Park. ...

Researchers discover way to make cells in the eye sensitive to light

...light sensing systems, the rods andcones. However, over the last few years it has become increasinglyaccepted that we have a third system, which uses melanopsin, that haslain undetected during decades of vigorous scientific investigation."Professor Hankins and Dr Lucas were part of the team who previously...

University of Manchester makes made-to-measure skin and bones a reality using inkjet printers

...ble to grow large tissues and have limited control over theshape or size the tissue will grow to. It also allows more than onetype of cell to be printed at once, which opens up the possibility ofbeing able to create bone grafts."Using conventional methods, you are only able to grow tissues whichare a few ...

Enzyme, lost in most mammals, is shown to protect against UV-induced skin cancer

... ?have apparently been lost from placental mammals over thecourse of evolution.Thus, most mammals, including humans, can only repair these lesionsthrough a much less direct and elaborate process called nucleotideexcision repair.In the new work, Dr. Bert van der Horst and colleagues studied theeffects of C...

Priming embryonic stem cells to fulfill their promise

...ate to borrow $3 billion to fund stemcell research over the next 10 years."I'm really excited about the stem cell applications of our newtechnology," said Bhatia. "We feel that this extracellular matrix partof the stem cell niche has been understudied. If we can now take whatwe've learned, add combination...

Growth in the sea comes down to a struggle for iron

.... For more than a century, oceanographers puzzled over the low abundance of phytoplankton in some ocean w... The American team went to work lowering equipment over the side to collect water samples. They analyzed water chemistry, nutrients, and microorganism diver...

Poor prenatal nutrition permanently damages function of insulin-producing cells in the pancreas

...e results were similar between the two groups. But over time, differences began to unfold. When 4 months old (comparable to human adolescence), the low-birth-weight babies began showing higher levels of blood glucose. "By 6 months, these levels had spiked abnormally, to 500 mg/dl -- the equivalent of seri...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...g cultures. "Therefore, it would seembest to start over again with newly derived human embryonic stem cellsthat have never been exposed to any animal products, and ideally, onlyever exposed to serum from the intended transplant recipient.""However, such an approach could not be pursued under existing rule...

Drug That 'Tags' Decision-making Areas Of The Brain May Aid

...tors “Ifthere is a gradual loss of these receptors over time, Nifrolidine couldbe a potential marker for early diagnosis of Alzheimer’s disease,?Mukherjee said.Scientists have known that nicotine’s action on these receptors elicitsdopamine in various brain regions implicated in nicotine addiction andother...

Mouse brain cells rapidly recover after Alzheimer's plaques are cleared

...ues often led to rapidrecovery of normal structure over a few days," says senior author DavidH. Holtzman, M.D., the Charlotte and Paul Hagemann Professor and headof the Department of Neurology. "This provides confirmation of thepotential benefits of plaque-clearing treatments and also gets usrethinking ou...

Key molecule in plant photo-protection identified

...ues often led to rapidrecovery of normal structure over a few days," says senior author DavidH. Holtzman, M.D., the Charlotte and Paul Hagemann Professor and headof the Department of Neurology. "This provides confirmation of thepotential benefits of plaque-clearing treatments and also gets usrethinking ou...

Tiny particles could solve billion-dollar problem

... improve efficiency by several orders of magnitude over bulk palladium catalysts." TCE, which is commonly used as a solvent to degrease metals and electronic parts, is one of the most common and poisonous organic pollutants in U.S. groundwater. It is found at 60 percent of the contaminated waste sites on...

Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine

...fic community's knowledge of CLL that has occurred over the past decade. The review appears in the Februar...L cells do indeed turn over, with the accumulation over time a result of the difference in the birth and death rates of the leukemia cells. Scientists have...

Plants respond similarly to signals from friends, enemies

...real-time, three-dimensional study in living cells over time, the NC State researchers discovered that the model legume Lotus japonicus responded similarly to signals from both rhizobia, the friends that fix nitrogen for the plant, and root-knot nematodes, the parasitic foes that want to harm the plant. S...

Novel antiviral technology inhibits RSV infection in mice

...iding substantial protectionfrom severe infections over days to weeks."Dr. Mohapatra and his team developed nose drops containing vectorscapable of producing small fragments of RNA (siRNA). These fragmentswere encapsulated within chitosan nanoparticles -- minisculenaturally-occurring, biodegradable partic...

The secret to longevity in tubeworms

... 1,000 individuals; with it, survival increases to over 250 years, matching the longevity of actual living tubeworms. To date, the proposed return of sulfate to the sediments through the roots is only a hypothesis--albeit one with much to support it--that still awaits direct confirmation. By providing a ...

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(Date:9/15/2014)... skin and gut microbes influence processes from digestion to ... the most biodiverse terrestrial ecosystems on the planet, more ... in the tropics. Smithsonian scientists and colleagues working on ... from a single tree were home to more than ... 57 tree species contained more than 7,000 different kinds. ...
(Date:9/15/2014)... (September 15, 2014) The so-called central dogma ... proteinhas long provided a simplified explanation for how ... organisms. , In reality, of course, the ... first articulated nearly 60 years ago by Nobel ... structure. For one, there are multiple types of ...
(Date:9/15/2014)... A published study indicates that lowland tapir populations may ... on hunting. Researchers from the Office National de ... Guiana and San Diego Zoo Global reviewed data retrieved ... the last four years and compared this data to ... were placed on hunting tapirs in French Guiana," said ...
Breaking Biology News(10 mins):Smithsonian scientists discover tropical tree microbiome in Panama 2Scientists discover RNA modifications in some unexpected places 2
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Breaking Medicine News(10 mins):Health News:Chelsea Fertility NYC Offers New and Affordable Fertility Treatment Options for Patients in the New York Tri-State Area 2Health News:Chelsea Fertility NYC Offers New and Affordable Fertility Treatment Options for Patients in the New York Tri-State Area 3Health News:Chelsea Fertility NYC Offers New and Affordable Fertility Treatment Options for Patients in the New York Tri-State Area 4Health News:Diet Doc Announces Emotional Eaters Diet Plans to Help Patients Break the Cycle for Fast and Permanent Weight Loss 2Health News:Diet Doc Announces Emotional Eaters Diet Plans to Help Patients Break the Cycle for Fast and Permanent Weight Loss 3Health News:Ramtha School Presents Capstone Event in Yelm Oct. 20-26 2Health News:Solar Construction Opportunity at U.S Army Installations Awarded to Pfister Energy & Infinity Development 2Health News:The Intentional Living Center Introduces the Love Your Marriage Night Featuring Dr. Randy Carlson in Arizona 2
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