Quantcast

Latest Cryptochrome Stories

Monarch Butterflies Rely In Part On Magnetic Compass For Navigation
2014-06-25 07:52:07

April Flowers for redOrbit.com - Your Universe Online Mass migrations have puzzled scientists for decades, and perhaps none more so than the North American monarch butterfly. Each fall, millions of the beautiful orange and black winged insects begin their journey from the eastern US and Canada. They travel over 2,000 miles to winter in specific groves of fir trees in the Michoacan Mountains in central Mexico, where they crowd together so densely that the air is filled with butterflies,...

2012-05-14 10:21:22

Changes in flies parallel human disorder Perelman School of Medicine at the University of Pennsylvania researchers have discovered a mechanism involving the neurotransmitter dopamine that switches fruit fly behavior from being active during the day (diurnal) to nocturnal. This change parallels a human disorder in which increased agitation occurs in the evening hours near sunset and may also be due to higher than normal dopamine levels in the brain. Sundown syndrome occurs in older people...

2011-12-20 13:37:17

Scientists find link between biological clock and sugar metabolism Scientists have discovered a missing link between the body's biological clock and sugar metabolism system, a finding that may help avoid the serious side effects of drugs used for treating asthma, allergies and arthritis. In a paper published last week in Nature, scientists at the Salk Institute for Biological Studies report finding that proteins that control the body's biological rhythms, known as cryptochromes, also...

2011-07-13 13:18:27

Study of fruit flies discovers an essential novel molecule Research has shown that light is the key to getting our 'body clocks' back in sync and now a new study exploring the resynchronisation mechanism in insects has discovered a molecule essential to the process. Researchers from Queen Mary, University of London looked at the impact of light on the circadian clocks (commonly known as 'body clocks') of fruit flies. They identified a novel molecule, QUASIMODO (QSM), which was intrinsically...

7164e37b383f2a2342eb5099068c8553
2011-06-22 06:05:00

Research published this week in the journal Nature Communications shows that a light-sensitive protein found in the human eye can act as a "compass" in the magnetic field when implanted into the eyes of Drosophila (flies). The study showed that without their natural "magneto reception" protein, flies do not respond to a magnetic field. But after replacing the protein with a human version of the protein, their ability was restored. For migratory birds and some other animals, the ability to...

bbb261a5b5a6ee48b86037f54b9ad1c71
2011-03-05 11:16:08

'Out of the blue' discovery marks new direction in phototransduction studiesA UC Irvine research team led by Todd C. Holmes has discovered a second form of phototransduction light sensing in cells that is derived from vitamin B2. This discovery may reveal new information about cellular processes controlled by light.For more than 100 years, it had been believed that the phototransduction process was solely based on a chemical derived from vitamin A called retinal. Phototransduction is the...

2010-12-29 13:54:04

In a new paper published this week in the Proceedings of the National Academy of Sciences, Aziz Sancar, MD, PhD, the Sarah Graham Kenan Professor of Biochemistry and Biophysics in the UNC School of Medicine, and his colleagues have taken an important step in understanding the underlying molecular signals that influence a broad array of biological processes ranging from the sleep-wake cycle to cancer growth and development. Scientists who work in this field, known as chronobiology, have...

2010-09-20 18:42:30

Biologists have found that a key protein that regulates the biological clocks of mammals also regulates glucose production in the liver and that altering the levels of this protein can improve the health of diabetic mice. Their discovery, detailed in this week's advanced online publication of the journal Nature Medicine, provides an entirely new biochemical approach for scientists to develop treatments for obesity and type 2 diabetes. It also raises the interesting possibility that some of...

9c59894415606d94998215f6de0eae3f1
2010-01-25 10:22:04

UMass Medical School neurobiologists use transgenic fruit flies and monarch butterfly transgenes to help define magnetoreception mechanism Building on prior investigation into the biological mechanisms through which monarch butterflies are able to migrate up to 2,000 miles from eastern North America to a particular forest in Mexico each year, neurobiologists at the University of Massachusetts Medical School (UMMS) have linked two related photoreceptor proteins found in butterflies to animal...

2009-10-15 14:30:00

Metabolic master switch sets the biological clock in body tissues Our body's activity levels fall and rise to the beat of our internal drums"”the 24-hour cycles that govern fundamental physiological functions, from sleeping and feeding patterns to the energy available to our cells. Whereas the master clock in the brain is set by light, the pacemakers in peripheral organs are set by food availability. The underlying molecular mechanism was unknown. Now, researchers at the Salk Institute...


Word of the Day
cruet
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.
Related