Tag: "muscular" at biology news

Marijuana use could cause tubal pregnancies

...y failure. In support of this hypothesis, abnormal muscular contraction that prevents human embryos from reaching the uterus is one known cause of ectopic pregnancy, Dey said. Polymorphisms (different forms) of the CB1 gene have been associated with drug dependency in humans. Dey and his colleagues plan to st...

Cockroach-like robot leads new research effort

...l, they hope to tease apart the complex neural and muscular networks in insects. At the same time, they w...approach will allow them to uncover the neural and muscular control and feedback loops that lead to the remarkably similar patterns of whole-body motion in anim...

JCI table of contents September 15, 2004

...ics to Vet Complex Disease A whole range of human muscular and neuromuscular diseases, are caused by mutations in the mitochondrial respiratory chain/oxidative phosphorylation system. The problem is that there are about 120 genes involved in this system, some that are found in the mitochondria, and thus inh...

Human chromosome 5 final sequence analysis released to public

...omosome 5 could eventually help explain how spinal muscular dystrophy is inherited. Researchers had known that deletions in the gene for survival of motor neurons, (SMN) caused the disease, but people with the same deletion can have much more or less severe forms of the disease. It turns out that the region c...

Venn diagram tactics to vet complex disease

A whole range of human muscular and neuromuscular diseases are caused by mutations in the mitochondrial respiratory chain/oxidative phosphorylation system. The problem is that there are about 120 genes involved in this system, some that are found in the mitochondria, and thus inhe...

Genetic analysis rewrites salamander's evolutionary history

...od; and so-called "ballistic" tongues that have no muscular attachment at the tip and can be hurled out nearly the length of the salamander's body. Wake has shown in previous studies that these tongues are not a good way to classify salamanders, because the various types of tongues have evolved several times ...

Select research highlights from current AACR journals

...e receptor protein dystroglycan may lead to either muscular dystrophy or the development of carcinomas. Wherea...cule are similar to defects recently identified in muscular dystrophies. The research was conducted at the Lawrence Berkley National Laboratories, Berkley, Cal...

Scientists fear new Ebola outbreak may explain sudden gorilla disappearance

...weigh up to 450 pounds. They have a broad chest, a muscular neck, and strong hands and feet. Short, thin, grey-black to brown-black hair covers their entire body, except the face. Many bear a distinctive ginger-colored crown. In comparison to mountain gorillas, western lowland gorillas have wider and larger s...

Clams: They're not just for chowder anymore

...y of diseases such as cancer, premature aging, and muscular dystrophyhas convened at the Marine Biological Laboratory to begin sequencing some of the clams active genes. The effort, called the Clam Project, is the first step toward sequencing the entire clam genome, and its goal is to provide scientists with...

UCSD biologists develop 'super-endurance' strain of mice

...ke full use of oxygen. But when the demands of our muscular system exceed its available supply of oxygen, as in sprinting for a bus or lifting a heavy object, a protein known as hypoxia inducible transcription factor-1, or HIF-1, is activated. This protein enables the muscle to switch to the more energeticall...

Heartless worms hold clues to cardiac arrhythmias, sudden death

... doesn't have a heart, it does have a pharynx -- a muscular tube that "pumps" food inside. The pharynx, Petersen said, is similar in many ways to a heart. It has an intrinsic beating -- like a heartbeat -- that responds to neuronal input by speeding up or slowing down. The investigators were able to take adv...

Newly discovered protein may be key to muscular dystrophy

...ewly discovered protein may play a central role in muscular dystrophy, a disease of progressive muscle degener...le synapse. Muscle degeneration is the hallmark of muscular dystrophy, one of the most common genetic diseases. The study was carried out in the roundworm...

Whale carcass yields bone-devouring worms

...he water and act as gills. The plumes connect to a muscular trunk, which can be withdrawn into a transparent tube when the worms are disturbed. At the other end of the trunk, hidden inside the whale bone, the body widens to form a large egg sac. The greenish roots, branching off from the egg sac, are filled w...

Gene therapy reaches muscles throughout the body and reverses muscular dystrophy in animal model

...nd reverses the process of muscle-wasting found in muscular dystrophy. "We have a c...e limiting the development of gene therapy for the muscular dystrophies. Our new work identifies for the first time a method where a new dystrophin gene can be...

Study by Tufts biologist provides window into progression of some degenerative diseases

...w some inherited diseases such as Huntington's and muscular dystrophy develop in humans. "Our findings show a ...logical disease) and myotonic dystrophy (a type of muscular dystrophy). There are more than 15 repeat expansion diseases, all of which are of special interest ...

Stem cells get a workout

...ishing muscle satellite cells that are depleted in muscular dystrophies. The researchers isolated human AC133-... tissue of mice that are a model for human Duchene muscular dystrophy. The human stem cells invaded the damaged muscle fibers, expressed muscle fiber markers, a...

JCI Table of Contents, 15 July 2004

...ishing muscle satellite cells that are depleted in muscular dystrophies. The researchers isolated human AC133-... tissue of mice that are a model for human Duchene muscular dystrophy. The human stem cells invaded the damaged muscle fibers, expressed muscle fiber markers, a...

Comparing primate genomes offers insight into human evolution

...also associated with the inherited disorder spinal muscular atrophy. This fact, along with the observation that there are human-specific gene duplications in this region, suggests a link between genome instability, disease processes, and evolutionary adaptation. In their genome-wide hunt for gene duplications...

'Mighty mouse' gene works the same way in people

...le. People with muscle-wasting conditions such as muscular dystrophy, and others just wanting to "bulk up," h... the myostatin gene led to mice that were twice as muscular as their normal siblings, lending them the moniker "mighty mice." Later, others showed that naturall...

LARGE protein can overcome defects in some types of muscular dystrophy

...ARGE, in cells from patients with similar types of muscular dystrophies with distinct gene defects, suggesting...ed by progressive muscle degeneration. A subset of muscular dystrophies have recently been linked to mutations in a group of enzymes involved in adding sugars t...

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