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Tag: "years" at biology news

Family trees of ancient bacteria reveal evolutionary moves

... the oxygen factory in plant cells. A half billion years ago Cyanobacteria predated more complex organisms ...most controversial eras ?approximately 2.1 billion years ago, when cyanobacteria first arose on the Earth. This was a time when the Earth's atmosphere had an...

Scientists discover how fish evolved to float at different sea depths

...ed how fish have evolved over the last 400 million years to stay motionless at different water depths. A r...retion, were present in the eye system 250 million years ago. This predated the swimbladder system by 100 million years. The special blood proteins induced d...

Scientists find fossil proof of Egypt's ancient climate

... understand the climate of northern Africa 130,000 years ago. While that might sound a bit like relying on...te and environment of western Egypt, lo those many years ago. They also could shed light on the possible role weather and climate played in the dispersal of ...

Implanted Devices Detect High-Risk Heart Failure Patients

...year. Roughly one-half of patients die within five years of diagnosis. Although there is no cure, drugs can improve the strength of the heartbeat (digoxin), relax blood vessels (ACE inhibitors)or remove the excess buildup of fluid in the lungs (diuretics). Implantable devices are the latest options in pre...

Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin

...ts intended target." This work takes advantage of years of effort in the Therien laboratory focused on the design of highly fluorescent compounds. Polymersomes, which were developed by Penn professors Daniel A. Hammer and Dennis Discher in the mid-1990s, function much like the bilayered membranes of livin...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

...hospital the same day and will be followed for two years as part of the study, and then indefinitely. The ...d by the FDA, it could be as soon as three to five years that this technology would be available to others." Surgical Information The ASR chip contains appr...

Special Imaging Study Shows Failing Hearts Are 'Energy Starved'

... confirm what many scientists have conjectured for years about heart failure, and suggest new treatments designed to reduce energy demand and/or augment energy transfer. “The heart consumes more energy per gram than any other organ,?notes Paul A. Bottomley, Ph.D., lead researcher and director of magnetic ...

Sexual cooperation: Mating increases longevity in ant queens

...ffspring are only produced after several months or years of colony growth, during which a sterile worker force is built up in the population. The fact that mates bond so early reduces the conflict between mating partners because both sexes benefit from the queen experiencing a long reproductive phase after...

Chemists identify key gene in development of type 1 diabetes

...on, perhaps a lifetime. But such a drug would take years to develop and test, the researchers caution. Like...ive gene therapy against the disease may take many years to develop, they add. Besides prevention, ISO-1 also is being tested in animals to determine whethe...

Bone Density Recovers After Teens Stop Injected Contraceptive

...o follow up an earlier study of older women (18-39 years old.) That study found that the older women lost bone density while using DMPA and increased bone mass after discontinuing the contraceptive. However, the younger women in the current study both lost bone density and increased bone density more rapid...

Breast-Cancer Risk Linked to Exposure to Traffic Emissions at Menarche, First Birth

...menarche (first menstrual period), first birth, 20 years prior to the interview and 10 years prior. Several information sources provided data on traffic volumes on roads in question for the ye...

Towards precise classification of cancers based on robust gene functional expression profiles

...on, perhaps a lifetime. But such a drug would take years to develop and test, the researchers caution. Like...ive gene therapy against the disease may take many years to develop, they add. Besides prevention, ISO-1 also is being tested in animals to determine whethe...

Children's taste sensitivity and food choices influenced by taste gene

... bitter taste, children ?who were between 5 and 10 years of age - and mothers categorized three concentrations of a bitter-tasting compound (propylthiouracil; PROP) as tasting either "like water" or "bitter or yucky." Having a bitter-sensitive allele (P) on the TAS2R38 receptor gene predicted sensitivity ...

New Insights Into HIV Immunity Suggest Alternative Approach to Vaccines

...ng antibodies in animals. "Recently, we spent two years making an experimental outer coat vaccine candidate that had the correct areas on the outer coat for the good broadly neutralizing antibodies to bind to, and we vaccinated several kinds of animals. In none did we get any of the good antibodies. That ...

Antibiotic might fight HIV-induced neurological problems

...was on the team that developed the model about six years ago. "It's a really demanding test of a potential treatment for HIV." The animal model has already helped improve understanding of how HIV might affect the brain, and this is the first time it's been used to test a potential treatment. Studies with ...

Ophthalmologists implant five patients with artificial silicon retina microchip

...hospital the same day and will be followed for two years as part of the study, and then indefinitely. The ...d by the FDA, it could be as soon as three to five years that this technology would be available to others." Surgical Information The ASR chip contains appr...

Nonlinear Dynamics announces more details of its global partnership with PerkinElmer

...provided PerkinElmer with software for a number of years now and we are very excited by this positive asser...tinue to benefit the proteomics community for many years to come." ...

Mayo Clinic Researchers Create 'Obedient Virus'; First Step To Use Measles Virus Against Cancer

...arian cancer and lymphoma -- and is probably still years away from use as a human therapy. But the concept ...sles virus became the focus of this vision several years ago when the surprising finding was made that the measles strain used internationally for vaccinatio...

Artifical cornea lets woman blind 20 years see

...mal vision sometimes take for granted. Now, twenty years and several life milestones later, Elma is able to...are of patients like her. "I was blind for twenty years in both my eyes," Phifer says. "A regular cornea wouldn't work because of the severity of damage to ...

Supercomputer Dedicated To Bioengineering, Computational Biology Installed

...rovide a stunning degree of performance that a few years ago simply couldn't be found in a small room in the basement of a bioengineering building." The cluster's management tool is called Rocks, an award winning toolkit developed at UCSD by a team led by Philip Papadopoulos, director of the Advanced Cybe...

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