Melatonin in Biological News

Is there a relationship between sleep-wake rhythm and diabetes?

... other cells, and encodes one of the two known melatonin receptors. It is assumed that this receptor ... of insulin via the neural hormone melatonin. The melatonin level in the body is high at night and declines ... of diabetes. Further studies will show which role melatonin plays in the regulation of insulin secretion, ...

Discovery of new gene associated with diabetes risk suggests link with body clock

... incontrovertible evidence that the gene encoding melatonin receptor 1B is associated with high fasting ... and Metabolism at the University of Oxford. melatonin is a hormone that is strongly tied to control of ... and dipping during the day. As a result, melatonin is implicated in conditions like jetlag and sleep ...

Melatonin may save eyesight in inflammatory disease

... Aires, Argentina Current research suggests that melatonin therapy may help treat uveitis, a common ... report by Sande et al., "Therapeutic Effect of melatonin in Experimental Uveitis," appears in the December ... TNFα and NFκB, were reduced with melatonin treatment. ...

Ohio scientists develop blue-blocking glasses to improve sleep and ADHD symptoms

... How the Glasses Work: Jumpstarting melatonin Production The individual puts on the glasses ... flow of melatonin, the sleep hormone. Normally, melatonin flow doesnt begin until after the individual goes ... indicate that promoting the earlier release of melatonin results in a marked decline of ADHD symptoms. ...

New genes present drug targets for managing cholesterol and glucose levels

... bedfellows: Some link gallstones and blood cholesterol levels, others link melatonin and sleep patterns to small increases in glucose levels and larger jumps ... the genetics of diabetes for more than 15 years. The gene, called the melatonin receptor, helps regulate the circadian clock, among other things. The ...

Mary had a lot of lambs: Researchers identify way to accelerate sheep breeding

... flock during a postdoctoral fellowship at Cornell. "In this case, we're talking about a receptor gene for melatonin," Thonney explained. melatonin is a naturally produced hormone commonly found in many animals. The change in the DNA sequence of the M allele does not change the amino acid ...

USC researchers present diabetes findings at American Diabetes Association Scientific Sessions

... Beta Cell: Where Do We Go from Genome-Wide Association Studies? Overview of Genome-Wide Association Studies, Implications for the Beta Cell and the melatonin Receptor). ...

To sleep, perchance to dream: New insight into melatonin production

... Kyong-Tai Kim (Pohang University) describes how melatonin production is coordinated with the body's natural sleep/wake cycles. melatonin is a hormone produced by the pineal gland in the ... basic physiological processes proceed). Normally, melatonin production is inhibited by light and enhanced by ...

Melatonin improves mood in winter depression

... considerable placebo response associated with it. melatonin can also cause phase advances, but it has to be ... in the afternoon. The Lewy team used afternoon melatonin to test if it was more antidepressant than melatonin taken in the morning, which causes phase delays. ...

New Research Shows Artificial Light at Night Stimulates Breast Cancer Growth in Laboratory Mice

... and waking cycles. The new study shows that melatonin also plays a key role in the development of ... “These results are due to a direct effect of the melatonin on the cancer cells,?said Blask. “The melatonin is clearly suppressing tumor development and ...

Travelers can avoid jet lag by resetting their body clocks

... a single light box and the over-the-counter drug melatonin -- allows travelers to avoid jet lag by resetting ... social environment. Both bright light and melatonin have successfully been used in laboratory and ... zone following rapid transmeridian jet travel. melatonin alone has been shown to synchronize the circadian ...

Mice brains shrink during winter, impairing some learning and memory

... and his colleagues believe it may be the hormone melatonin which controls the changes in brain size and ... white-footed mice. Scientists know that levels of melatonin are associated with seasonal changes in daylight. melatonin is also found in humans, and that's one reason ...

Keeping the body in sync -- The stability of cellular clocks

... Some examples of output from these clocks are the daily rhythmic changes in body temperature, blood pressure, heart rate, concentrations of melatonin and glucocorticoids, urine production, acid secretion in the gastrointestinal tract, and changes in liver metabolism. In the tiny volume of the ...