Experiments illuminate workings of biological clocks
...niversity of Pennsylvania have pinpointed howlight resets the flies' biological clock. Since such clocks occur in humans as well as flies, these insights couldsuggest new ways to treat jet lag or depression, which are thought to beinfluenced by circadian rhythms. These types of studies may also eventually...Scientists track down the root of cloning problems
...ng it with the nucleus of an adult cell. The egg resets the developmental clock of the adult cell back to its embryonic state and gives rise to a new organism that is genetically identical to the donor adult. In practice, however, the theoretically simple procedure has proved troublesome. Cloned an...New study shows normal-looking clones may be abnormal
...from an adult cell or an ES cell. Ideally, the egg resets the developmental clock of the nucleus back to a state compatible with early embryonic growth and gives rise to a new organism that is genetically identical to the donor cell. Researchers had thought that using the nucleus from ES cell might require ...Tracing the neural circuitry of second sight
...resides in the brain, and sunlight is the cue that resets this clock daily. Basic insights into the circadian system could lead to improved treatment for such problems as jet lag and depression, and even help optimize drug treatments affected by the rhythmic changes in body hormones. "It's been known for tw...Scientists prove mature adult cells can be cloned
...nucleus from an adult donor cell. Ideally, the egg resets the developmental clock of the nucleus back to a state compatible with early embryonic growth. This ball of cells growing in culture gives rise to embryonic stem (ES) cells that genetically match the donor and have the potential to become any tissue ...Single cell type seems to control internal clock and pupil of eye
...sents an important step in understanding how light resets the internal clock, or circadian rhythm, and how the pupil opens and closes in response to light, the scientists say. To learn how light reaches those brain centers, postdoctoral fellow Samer Hattar, Ph.D., created a mouse whose melanopsin protein w...Scientists combine therapeutic cloning, embryonic stem cells, and gene defect in mice
...etic immune deficiency. In this procedure, the egg resets the developmental clock of the adult nucleus and the reprogrammed cell starts developing into an embryo that is genetically identical to the donor cell. At the stage when the embryo develops into a hollow ball of approximately a hundred cells, calle...Diabetes tied to altering of the heart's circadian clock
...aker perceives light signals via the retina, which resets its mechanism. Peripheral clocks are those clocks located within other regions of the organism besides the SCN. The central and peripheral clocks require synchronization; zeitgebers involved in the process are light for the central clock, and neur...New way found to see light through novel protein identified by Dartmouth geneticists
...e circadian cycle works and demonstrated how light resets it through a complex of interwoven molecular messa...es a central cog of the clock cycle and that light resets the clock by acting on frq. He identified the frq parts necessary and sufficient for light induced e...Dartmouth researchers identify multi-tasking circadian protein
...central cog of the biological clock and that light resets the clock through frequency. He then determined that the clock proteins White Collar-1 and White Collar-2 bind to the specific parts of frequency that turn on frequency in response to light. And finally, he showed that under appropriate biochemical c...Gene responsible for rewinding body's 'clock' described by scientists at TSRI
...ythms. Furthermore, understanding the protein that resets the body's clock should help in research aimed at countering the most common circadian problems--the jet-lag one feels after overseas flights or fatigue when working night shifts. Circadian Rhythms are Entrained by Light Humans, mice, and many oth...Science's top ten: Discovery of genes' 'control switches' named top advance of 2002
...merized the field. This photoreceptor system helps resets the body's daily, or "circadian," clock, making it a critical part of human physiology. It may even lead to new insights on countering the effects of jet lag or winter depression. The once-elusive cells turned out to be wired to the very area of the ...Molecule helps pupils respond to light
...resides in the brain, and sunlight is the cue that resets this clock daily. Improved understanding of the circadian system could lead to better treatments for jet lag and depression, and may help optimize drug treatments affected by changes in hormone levels. Although earlier studies had indicated that mela...University of Chicago scientists pinpoint cellular cause of SIDS
...ls when they are deprived of oxygen. Since gasping resets the normal breathing pattern for babies, the scien...or auto-resuscitation mechanism," Ramirez says. It resets a baby's normal breathing rhythm and also alerts the baby as well as the mother that something is wr...