Tag: "rhythmically" at biology news

Circadian clock genes may provide targets for new cancer drugs

...) in Boston. Tumor cell circadian clock genes are rhythmically expressed in coordination with rhythmic circadian growth and thereby may represent new therapeutic targets: Abstract 698 Recent research suggests that at least eight central 'clock' genes coordinate many basic functions such as cell proliferation and...

Study: Stroke victims may retain continuous motion ability

...ore start-stop nature, such as tapping your finger rhythmically on a table. Patients with cerebellum damage who participated in the study had difficulty tapping a steady beat, but no such trouble with drawing circles in rhythm. The study indicates that stroke victims may retain some motor skills thought to have b...

In a noisy world, how can the senses project and receive information at the same time?

...famous character, Jiminy Cricket, are generated by rhythmically rubbing the fore wings together resulting in a form of sound production called stridulation. As crickets ears are located on the forelegs, they are fully exposed to the self-generated sounds. Many animals reduce the responsiveness of their periphera...

Stem cells put to the test in UNC studies

...n vivo," in a living animal, the new myocytes were rhythmically beating and "were functionally integrated with the adjacent heart cells," Cascio said. "They demonstrated intact cell-to-cell communication with cell-to-cell transmission of calcium signals." Cascio added that the study confirmed earlier findings p...

Even green pond scum can suffer from jet lag

... bacteria which have a 25-hour clock so they would rhythmically luminesce as well. Next they created mixed colonies by combining the different strains in pairs: wild type and 22 hour; wild type and 30 hour; 22 hour and 30 hour. Then they put these mixed cultures into incubators with three different light-dark cy...

First biologic pacemaker created by gene therapy in guinea pigs

..., heart cells in the guinea pigs spontaneously and rhythmically "fired" after the scientists genetically altered the cells' balance of potassium. Such a "biopacemaker" is a potentially important option for patients at too high a risk for infection from implanted electronic pacemakers or too small for an implante...

Bioengineered, rhythmically beating heart muscle could aid cardiac research

...yielded potentially useful fruit: a bioengineered, rhythmically beating experimental model of heart muscle. ...tended between the two tethers. The tissue strand rhythmically contracts at 100 beats per minute, easily observed with a low-power microscope. Tests reveal striati...

Waddling is a good way to make up for short legs - at least for penguins, say UC Berkeley researchers

...tion is analogous to an inverted pendulum swinging rhythmically back and forth, Griffin explained. At the end of each swing, when the penguin is momentarily still, the energy of side-to-side motion is stored as potential energy. On the return swing, this is converted efficiently into energy of motion that peaks a...

Researchers Discover Mechanism That Drives Daily Body Rhythms

...or arginine vasopressin, a peptidethat is released rhythmically in specific brain regions over the course of theday, contains the same on switch as one of the six genes in the central clockmechanism. And the switch for this output gene appears to be turned on and offby the same proteins, or transcription factors,...

'Auditory Scene Analysis' Helps Find Mates

...ing muscles on the male's swim bladder to contract rhythmically and produce a hum averaging 100 Hz in frequency. In part of the midshipman female brain known as the midbrain (and humans have midbrains and hindbrains, too), Baker and Bass found neurons that respond to a 100-Hz hum. Whenever the hums of two ne...

Biological Clocks No Longer Found Only In The Brain

...nder normal light/dark conditions, the clock genes rhythmically luminesced in each of the segments -- head, thorax and abdomen. The clock genes were especially conspicuous in chemosensory cells at the base of hairs on the legs and wings and on the antennae and proboscis. These clocks also ebbed and flow...

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