News tagged with muscle protein
Unusual protein helps regulate key cell communication pathway
Charged atoms, or ions, move through tiny pores, or channels, embedded in cell membranes, generating the electrical signals that allow cells to communicate with one another. In new research, scientists have ...
Apr 23, 2012 |
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Insulin boost restores muscle growth in elderly
When most people think of insulin, they think of diabetes — a disease that arises when, for one reason or another, insulin can't do the critical job of helping the body process sugar. But the hormone has another, less well-known ...
Medicine & Health / Medical research
Sep 25, 2009 |
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Nano-motor with a light switch: Light-triggered myosin allows real-time study of cells
(PhysOrg.com) -- Molecular "motors" are at the root of most biological movement. They propel cell components, whole cells, and even our muscles on command. Barbara Imperiali and a team from the Massachusetts ...
May 10, 2011 |
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New malaria protein structure upends theory of how cells grow and move
Researchers from the Walter and Eliza Hall Institute have overturned conventional wisdom on how cell movement across all species is controlled, solving the structure of a protein that cuts power to the cell ...
May 30, 2011 |
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Fruit flies on meth: Study explores whole-body effects of toxic drug
A new study in fruit flies offers a broad view of the potent and sometimes devastating molecular events that occur throughout the body as a result of methamphetamine exposure.
Medicine & Health / Medical research
Apr 20, 2011 |
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Biophysics: Order in chaos
The process of skeletal muscle contraction is based around protein filaments sliding inside sarcomeres — the structural units of muscle fiber. Inside each sarcomere is a set of filament motors, which ...
May 03, 2012 |
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New insight into the regulation of stem cells and cancer cells
Scientists at the Gladstone Institutes have gained new insight into the delicate relationship between two proteins that, when out of balance, can prevent the normal development of stem cells in the heart and may also be important ...
Aug 15, 2011 |
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Study suggests that successful blueprints are recycled by evolution
During the development of an embryo, a large number of different, specialised cell-types arise from the fertilised egg. The genetic information is identical in all cells of an organism. Different properties ...
May 02, 2011 |
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LCD projector used to control brain, muscles of tiny organisms such as worms (w/ Video)
(PhysOrg.com) -- Researchers are using inexpensive components from ordinary liquid crystal display (LCD) projectors to control the brain and muscles of tiny organisms, including freely moving worms. Red, ...
Jan 16, 2011 |
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Perfect micro rings woven from muscle fibers: A biological model system that dead-ends in 'absorbing state'
Supplied with sufficient energy, a freight train would ride the rails as far as they go. But nature also knows systems whose dynamics suddenly turn into a kind of endless loop. Like in a hamster wheel, a train ...
Nov 15, 2011 |
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Small change makes a big difference for ion channels
Using a high-resolution single-molecule study technique, University of Illinois researchers have seen the very subtle differences between two branches of an important family of neurotransmitter-gated ion channels.
Jun 02, 2011 |
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Stem cell study could pave the way to treatment for age-related muscle wasting
A team led by developmental biologist Professor Christophe Marcelle has nailed the mechanism that causes stem cells in the embryo to differentiate into specialised cells that form the skeletal muscles of animals' bodies. ...
May 17, 2011 |
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Researchers trace effects of genetic defect in myotonic muscular dystrophy
Research on the genetic defect that causes myotonic muscular dystrophy has revealed that the mutation disrupts an array of metabolic pathways in muscle cells through its effects on two key proteins. A study published in Nature St ...
Medicine & Health / Medical research
Jan 24, 2010 |
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Boosting supply of key brain chemical reduces fatigue in mice
Researchers at Vanderbilt University have "engineered" a mouse that can run on a treadmill twice as long as a normal mouse by increasing its supply of acetylcholine, the neurotransmitter essential for muscle contraction.
Medicine & Health / Neuroscience
Dec 20, 2010 |
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Antioxidant controls spinal cord development
Researchers at the Johns Hopkins School of Medicine have discovered how one antioxidant protein controls the activity of another protein, critical for the development of spinal cord neurons. The research, publishing this ...
Medicine & Health / Neuroscience
Sep 18, 2009 |
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Muscle
Muscle (from Latin musculus, diminutive of mus "mouse") is the contractile tissue of the body and is derived from the mesodermal layer of embryonic germ cells. Muscle cells contain contractile filaments that move past each other and change the size of the cell. They are classified as skeletal, cardiac, or smooth muscles. Their function is to produce force and cause motion. Muscles can cause either locomotion of the organism itself or movement of internal organs. Cardiac and smooth muscle contraction occurs without conscious thought and is necessary for survival. Examples are the contraction of the heart and peristalsis which pushes food through the digestive system. Voluntary contraction of the skeletal muscles is used to move the body and can be finely controlled. Examples are movements of the eye, or gross movements like the quadriceps muscle of the thigh. There are two broad types of voluntary muscle fibers: slow twitch and fast twitch. Slow twitch fibers contract for long periods of time but with little force while fast twitch fibers contract quickly and powerfully but fatigue very rapidly.
For more information about Muscle, read the full article at
Wikipedia.
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