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AMP-activated protein kinase - Wikipedia, the free encyclopedia
"5' AMP-activated protein kinase or AMPK or 5' adenosine monophosphate-activated protein kinase is an enzyme that plays a role in cellular energy homeostasis. It consists of three proteins (subunits) that together make a functional enzyme, conserved from yeast to humans. It is expressed in a number of tissues, including the liver, brain, and skeletal muscle. The net effect of AMPK activation is stimulation of hepatic fatty acid oxidation and ketogenesis, inhibition of cholesterol synthesis, lipogenesis, and triglyceride synthesis, inhibition of adipocyte lipolysis and lipogenesis, stimulation of skeletal muscle fatty acid oxidation and muscle glucose uptake, and modulation of insulin secretion by pancreatic beta-cells.[1]
It should not be confused with cyclic AMP-activated protein kinase (protein kinase A), which, although being of similar nature, may have opposite effects.[2]"
Life expectancy - Wikipedia, the free encyclopedia
Life expectancy is the expected (in the statistical sense) number of years of life remaining at a given age.[1] It is denoted by ex, which means the average number of subsequent years of life for someone now aged x, according to a particular mortality experience. (In technical literature, this symbol means the average number of complete years of life remaining, ie excluding fractions of a year. The corresponding statistic including fractions of a year, ie the normal meaning of life expectancy, has a symbol with a small circle over the e.)
Life Expectancy by Age, 1850–2004 — Infoplease.com
The expectation of life at a specified age is the average number of years that members of a hypothetical group of people of the same age would continue to live if they were subject throughout the remainder of their lives to the same mortality rate.
Use of cod liver oil during the first year of life is associated with lower risk of childhood-onset type 1 diabetes: a large, population-based, case-control study -- Stene et al. 78 (6): 1128 -- American Journal of Clinical Nutrition
Use of cod liver oil during the first year of life is associated with lower risk of childhood-onset type 1 diabetes: a large, population-based, case-control study.
Stene LC, Joner G; Norwegian Childhood Diabetes Study Group.
Am J Clin Nutr. 2003 Dec;78(6):1128-34.
PMID: 14668274
Conclusion: Cod liver oil may reduce the risk of type 1 diabetes, perhaps through the antiinflammatory effects of long-chain n-3 fatty acids.
Total Population > Life Expectancy At Birth statistics - countries compared - NationMaster
CIA - The World Factbook -- Country Comparison :: Life expectancy at birth
This entry contains the average number of years to be lived by a group of people born in the same year, if mortality at each age remains constant in the future. The entry includes total population as well as the male and female components. Life expectancy at birth is also a measure of overall quality of life in a country and summarizes the mortality at all ages. It can also be thought of as indicating the potential return on investment in human capital and is necessary for the calculation of various actuarial measures.
Abiogenesis - Wikipedia, the free encyclopedia
In the natural sciences, abiogenesis, or "chemical evolution", is the study of how life on Earth could have arisen from inanimate matter. It should not be confused with evolution, which is the study of how groups of living things change over time. Amino acids, often called "the building blocks of life", can form via natural chemical reactions unrelated to life, as demonstrated in the Miller-Urey experiment, which involved simulating the conditions of the early Earth. In all living things, these amino acids are organized into proteins, and the construction of these proteins is mediated by nucleic acids. Thus the question of how life on Earth originated is a question of how the first nucleic acids arose.
BBC - Earth News - Earth News
Earth News is produced by the acclaimed BBC Natural History Unit based in Bristol.
Earth News is here to bring that world to you and to tell the greatest story of all. The story of life.
NASA - NASA Researchers Make First Discovery of Life's Building Block in Comet
NASA scientists have discovered glycine, a fundamental building block of life, in samples of comet Wild 2 returned by NASA's Stardust spacecraft.
"Glycine is an amino acid used by living organisms to make proteins, and this is the first time an amino acid has been found in a comet," said Dr. Jamie Elsila of NASA's Goddard Space Flight Center in Greenbelt, Md. "Our discovery supports the theory that some of life's ingredients formed in space and were delivered to Earth long ago by meteorite and comet impacts."
Solal Technologies - Anti-Aging Specialists - The Life Extension Revolution (Powered by CubeCart)
Product Information
The Life Extension Revolution
by Philip Lee Miller, M.D. with Monica Reinagel
Bantam, 2005
As technologically advanced as we are, why hasn’t conventional medicine been able to cure many of today’s diseases? Because many scientific findings never make it into mainstream medicine, the result is that millions suffer and die while proven therapies exist. The good news is that a leading anti-aging physician and the renowned Life Extension Foundation are revolutionizing medicine by combining modern medical discoveries and novel natural therapies. Now, reaching 40 no longer means inevitable weight gain, joint pain, and cognitive decline. In the not-so-distant future, diseases will be cured, and the human life span will be measured in centuries rather than decades.
Extreme Life Thrives Where the Livin’ Ain’t Easy | Wired Science | Wired.com
Once upon a time, scientists routinely found life in places where it wasn’t supposed to exist. That doesn’t happen anymore, and not because the pace of discovery has slowed. If anything, it’s accelerated. It’s simply become clear that life can exist almost anywhere on Earth.
After 3 billion years of evolution, life has flowed into every last nook and cranny, from the bottom of the sea to the upper edge of the stratosphere. From blazing heat and freezing cold to pure acidity and atomic bomb-caliber radiation, there’s seemingly no stress so great that some bug can’t handle it.
This gallery highlights a few particularly tough species of bacteria and archaea, a lesser-appreciated but equally-vast branch of the organismal tree. Until the late 1970s, archaea was lumped in with bacteria, a confusion that speaks to the embryonic state of human microbial knowledge. Less than 1 percent of Earth’s microorganisms have been identified, and most of those won’t even grow in a lab.
Might You Live a Great Deal Longer? | Video channel on TED.com
Futurist Ray Kurzweil foresees body and brain enhancements leading to an extended human tenure on Earth -- and beyond. Surgeon and chemical engineer Alan Russell, meanwhile, asks: "If newts can regenerate a lost limb, why can't we?" And Aubrey de Grey, icon of the life extension movement, gives a challenging talk that may convince you that aging will soon become optional.
SmartPlanet - We Make You Smarter - People, Business & Technology
SmartPlanet.com is the premier destination for savvy advice, thought-provoking analysis and expert discussion on the intersection of technology, business and life. Covering decisions that reach from the boardroom to the living room, SmartPlanet.com is the place to go for innovative insight and ideas that impact the world around you.
AP Biology | MIT OpenCourseWare - Free Online MIT Course Materials for High School
We have selected relevant material from MIT's introductory courses to support students as they study and educators as they teach the AP® Biology curriculum.
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