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Tag: "muscle" at biology news

Stem cell study for patients with heart attack damage seeks to regenerate heart muscle

...ansplanted stem cells can regenerate damaged heart muscle in those who experience a first heart attack. The ...t can be left with substantial damage to the heart muscle as a result of the blood supply to the heart muscle being cut off during the heart attack. The dama...

Nano machine switches between biological and silicon worlds

...lds. I could see it providing an interface between muscle and external devices, through its use of ATP, in human implants. Such an application is still 20 or 30 years away," says Firman "It's very exciting and right now we're applying for a patent for the basic concepts." One hugely important application i...

Fruit fly's beating heart helps identify human heart disease genes

...rt failure in humans and is characterized by heart muscle that has greatly enlarged and therefore is unable to pump blood efficiently. The moving images revealed that fly heart looked and acted just like a human heart with the same condition. "The difficulty in performing studies to find specific genes tha...

Hyena mothers give their cubs a helpful dose of hormones

...pically masculine characteristics like aggression, muscle development and sexual behavior. The team found that alpha females had higher androgen levels late in pregnancy when compared to the subordinate, pregnant females in the pack. Consequently, the cubs of the alpha females were more aggressive and exhi...

Growth hormone is made in the brain, report scientists

...g growth hormone and anabolic steroids to increase muscle mass. The scientists suspect that reasoning and mood may also be affected by these differences in the amount of growth hormone in the brain. "Growth hormone has been associated with growth of muscles and bones, and the production of it was believe...

Liver cancer linked to cellular repair pathway

... pathway is also linked to certain brain, skin and muscle cancers and has recently been implicated in cancers of the pancreas, esophagus, lungs and prostate. The work by the Duke and Johns Hopkins team now adds liver cancer to the growing body of evidence suggesting these cancerous tumors are generated by s...

H5N1 avian flu virus vaccine induces immune responses in healthy adults

...the first Systemic complaints of fever, malaise, muscle aches, headaches and nausea occurred with the same frequency in all dosage groups as in the placebo group Lab tests did not reveal any clinically significant abnormalities The vaccine, made from an inactivated H5N1 virus isolated in Southeast Asi...

Technique makes it easier to see mouse embryo in all its glory

...ancers '" brain tumors called medulloblastomas and muscle tumors called alveolar rhabdomyosarcomas. Dr. Keller, a pediatric oncologist, moved to the CCRI from the University of Utah in 2005, and continues his collaborations with engineers and computer scientists at Utah's Scientific Computing and Imaging In...

Stem cells from muscles can repair cartilage

...fferentiation. The authors conclude that skeletal muscle is a promising source of cells that can differenti...cells, obtaining these cells is more invasive than muscle biopsies. The author also notes that patients could potentially serve as donors to themselves, since...

Getting old? Slowing down? Blame inefficient mitochondria

...niversity of Washington, Seattle, compared resting muscle cells from young (7-month) and old (30-month) mice. They found that old muscle used around half as much energy as young muscle, but that the mitochondria used just as much oxygen ...

Feeling old?

...France. After the age of 40, humans start loosing muscle at around 0.5?% per year. Immediately after a meal...degradative machinery that breaks down contractile muscle protein, and that leucine supplementation can fully restore correct function. "Preventing muscle wa...

Forgotten by evolution?

...em cell line to express proteins characteristic of muscle cells. Interestingly, when a particular path, know..., the cells began to develop the features of heart muscle cells. In contrast, when they were beforehand stimulated with a protein known as CDO, the cells show...

Researchers develop new method to help find deadly malaria parasite's Achilles heel

...ion that leads to fever, shaking chills, headache, muscle aches, and other symptoms. Ideker said critics may fault his study because only a subset of the Plasmodium's proteins is expressed in the erythrocytic stage. However, he noted that the parasite's asexual-phase is actually enriched in proteins for whi...

Mouse study: New muscle-building agent beats all previous ones

...phix, an agent that's more effective at increasing muscle mass in mice than a related potential treatment fo...f the new agent triggered a 60 percent increase in muscle size, the researchers report in the Proceedings of the National Academy of Sciences, published onlin...

Scientists crack code for motor neuron wiring

...sory neurons that transmit feedback information on muscle action. The research team, which was led by HHMI ...y, the motor neuron pool identity that governs the muscle target of each set of motor neurons. In a key set of experiments, Dasen showed that alterations in H...

Similar Stem Cells In Insect And Human Gut

...s on a different fuel. Molecular motors that power muscle contraction, for example, use ATP molecules for energy. The spasmoneme runs on calcium, but its drive mechanism was poorly understood until France and colleagues got under the nano hood. Like van Leeuwenhoek, the researchers studied Vorticella under ...

Are U.S. Flu Death Figures More PR Than Science?

...s on a different fuel. Molecular motors that power muscle contraction, for example, use ATP molecules for energy. The spasmoneme runs on calcium, but its drive mechanism was poorly understood until France and colleagues got under the nano hood. Like van Leeuwenhoek, the researchers studied Vorticella under ...

Nano springs eternal; Protozoan 'engine' posts nano records

...s on a different fuel. Molecular motors that power muscle contraction, for example, use ATP molecules for energy. The spasmoneme runs on calcium, but its drive mechanism was poorly understood until France and colleagues got under the nano hood. Like van Leeuwenhoek, the researchers studied Vorticella under ...

New technique helps researchers determine amino-acid charge

...n state. In this case, researchers focused on the muscle nicotinic acetylcholine receptor, a membrane protein that mediates voluntary muscle contraction. "Our paper has implications that are specific to this receptor, but many of the findin...

Common viruses may cause cancer

...cess that leads, for instance, to the formation of muscle and bone. Viral infections can also cause cell fusion, but cells fused by viruses are widely considered to be harmless because they are generally believed to die without consequences for the host. According to a recent study, however, cell fusion tri...

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