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Latest Skeletal muscle Stories

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2010-12-01 11:10:10

TAU uncovers muscle-stem cell mechanism in aging Working out can help you shed pounds "” but that's just the beginning. New research from Tel Aviv University has found that "endurance exercises," like a Central Park jog or a spinning class, can make us look younger. The key, exercise, unlocks the stem cells of our muscles. Prof. Dafna Benayahu and her team at Tel Aviv University's Sackler School of Medicine say their findings explain for the first time why older people who have...

2010-11-30 21:48:24

Deletion of key muscle protein inhibits exercise Daniel Kelly, M.D., and his colleagues at Sanford-Burnham Medical Research Institute (Sanford-Burnham) at Lake Nona have unveiled a surprising new model for studying muscle function: the couch potato mouse. While these mice maintain normal activity and body weight, they do not have the energy to exercise. In the December 1 issue of Cell Metabolism, Dr. Kelly's team reports what happens when muscle tissue lacks PGC-1, a protein coactivator that...

2010-11-22 19:17:18

A new study reveals that muscle cells fuse together during development by poking "fingers" into each other to help break down the membranes separating them. The study appears online on November 22, 2010 in the Journal of Cell Biology(www.jcb.org). During muscle development, individual muscle cells fuse together to form long myotubes containing multiple cell nuclei. In the fruit fly Drosophila melanogaster, fusion occurs between two different types of muscle cell: founder cells and...

2010-11-17 17:38:56

When cardiac or skeletal muscle is not receiving enough oxygen to meet metabolic demands, a person will experience pain, such as angina, chest pain during a heart attack, or leg pain during a vigorous sprint. This type of pain is called "ischemic" pain and is sensed in the body by receptors on sensory neurons. It has been suggested that lactic acid, which increases during muscle exertion under conditions where oxygen is low, is a potential mediator of ischemic pain via action at acid sensing...

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2010-11-11 06:05:00

Researchers from the University of Colorado at Boulder reported Wednesday that certain types of stem cells transplanted into the leg muscles of mice prevented the loss of muscle function and mass that typically occurs with aging. The researchers injected the stem cells into the muscles of injured mice, and observed that the muscles grew back twice as large in just a few days, creating bulky mice with bulging muscles that remained strong and big for the rest of their lives. The findings could...

2010-09-27 14:04:40

Researchers at Stanford University were able to use light to induce normal patterns of muscle contraction, in a study involving bioengineered mice whose nerve-cell surfaces are coated with special light-sensitive proteins. The new approach allows scientists to more accurately reproduce muscle firing order, making it a valuable research tool. The investigators, from Stanford's Schools of Medicine and of Engineering, also believe this technique could someday spawn practical applications, from...

2010-08-26 12:57:12

Findings add new dimension to how memories are encoded, suggest new therapeutic targets Functioning much like gears in a machine, cellular motor proteins are critical to dynamic functions throughout the body, including muscle contraction, cell migration and cellular growth processes. Now, neuroscientists from UC Irvine and the Florida campus of The Scripps Research Institute report that motor proteins also play a critical role in the stabilization of long-term memories. The findings add an...

2010-08-20 14:05:24

Scientists from Department of Exercise and Sport Sciences have in collaboration with colleagues at Harvard University discovered a novel molecular pathway which is activated in muscles during exercise. Skeletal muscles combust both lipids and carbohydrates during exercise. The carbohydrates consist of both glycogen stored in the muscles as well as glucose extracted from the blood. Being a major sink for glucose disposal, skeletal muscle represents an important model tissue for studying the...

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2010-08-11 18:52:56

Current gym dogma holds that to build muscle size you need to lift heavy weights. However, a new study conducted at McMaster University has shown that a similar degree of muscle building can be achieved by using lighter weights. The secret is to pump iron until you reach muscle fatigue.The findings are published in PLoS ONE http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0012033"Rather than grunting and straining to lift heavy weights, you can grab something much lighter...

2010-06-29 03:20:03

There are major shifts underway in understanding the physiological mechanisms that control muscle contraction, a field that has been the focus of intense research for centuries. Last September, leading muscle researchers from around the world gathered to discuss new findings, insights, and current questions in the field as part of the 63rd Symposium of the Society of General Physiologists (SGP) on "Muscle in Health and Disease." Inspired by the SGP discussions, the latest Perspectives in...


Word of the Day
bellycheer
  • Good cheer; viands.
  • To revel; to feast.
The word 'bellycheer' may come from 'belle cheer', "good cheer".
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