Latest Bacterial circadian rhythms Stories

Understanding how oncogenes affect the body clock may help create better cancer treatments The Myc oncogene can disrupt the 24-hour internal rhythm in cancer cells. Postdoctoral fellow Brian Altman, PhD, and graduate student Annie Hsieh, MD, both from the in the lab of Chi Van Dang, MD, PhD, director of the Abramson Cancer Center, Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, present their data in the "Metabolic Pathway Regulation in...

When Thomas Edison tested the first light bulb in 1879, he could never have imagined that his invention could one day contribute to a global obesity epidemic. Electric light allows us to work, rest and play at all hours of the day, and a paper published this week in Bioessays suggests that this might have serious consequences for our health and for our waistlines. Daily or "circadian" rhythms including the sleep wake cycle, and rhythms in hormone release are controlled by a molecular clock...

Women trying to have babies also need to think about circadian clock A new Northwestern University study shows that the biological clock is not the only clock women trying to conceive should consider. The circadian clock needs attention, too. Epidemiological studies have shown female shift workers, such as nurses, and female flight attendants who work on long-distance east-west routes (i.e., those with constant jet lag) have fertility and menstrual issues. They are habitually out of...

Study outcomes could translate to energy savings for greenhouse operations Scientists know that plants can actually "sense" day length, and "schedule" their growth to coincide with specific environmental conditions. These natural events are based on the circadian clock, a 24-hour system found in most biochemical and physiological processes. Plants grow better in circadian conditions that correspond to natural environments, but until now researchers have not understood how plants' internal...

Yale University researchers have identified a key genetic gear that keeps the circadian clock of plants ticking, a finding that could have broad implications for global agriculture. The research appears in the Sept. 2 issue of the journal Molecular Cell. "Farmers are limited by the seasons, but by understanding the circadian rhythm of plants, which controls basic functions such as photosynthesis and flowering, we might be able to engineer plants that can grow in different seasons and...

The mechanism that controls the internal 24-hour clock of all forms of life from human cells to algae has been cracked by researchers. Not only does the finding provide important insight into health-related issues linked to individuals with disrupted internal clocks -- such as pilots and shift workers -- it also indicates that the 24-hour circadian clock found in human cells is the same as that found in algae and dates back to when the earliest life on Earth was formed. New research suggests...

It's just a worm, a tiny soil-dwelling nematode worm "“ but the implications are big for biomedicine and circadian biology as shown in a recent study authored by University of Nevada, Reno researcher Alexander van der Linden. The article on the circadian clock of the Caenorhabditis elegans worm was published in the peer-reviewed, open-access journal, PLoS Biology."Circadian rhythms are important in all organisms because they regulate biological functions such as food intake, temperature,...

    * Circadian clock genes are key to regulating physiological and behavioral activities.    * Animal studies have shown that chronic drinking can disrupt expression in these genes.    * A human study has found an association between dysregulation of circadian clock genes and chronic drinking.Circadian rhythmicity is regulated by circadian clock genes, and animal studies have shown that chronic drinking can alter expressions in these genes. A new study has found...

Cell division in cyanobacteria controlled by same kind of circadian rhythms that govern human sleepA team of researchers at MIT and the University of California at San Diego has shown how cell division in a type of bacteria known as cyanobacteria is controlled by the same kind of circadian rhythms that govern human sleep patterns.Previous studies have shown that even though cyanobacteria do not "sleep" in the same way that humans do, they cycle through active and resting periods on...

A team of biologists has unraveled the biochemistry of how bacteria so precisely time cell division, a key element in understanding how all organisms from bacteria to humans use their biological clocks to control basic cellular functions.The discovery, detailed in the February 19 issue of the journal Cell, provides important clues to how the biological clocks of bacteria and other "prokaryotic" cells"”which lack cell nuclei"”evolved differently from that of "eukaryotic" cells with nuclei...