tissue 2 4

Tag: "tissue" at biology news

Lithium builds gray matter in bipolar brains, UCLA study shows

...e whether bipolar patients showed changes in brain tissue and, if so, whether those changes were influenced by lithium treatment. Specifically, they employed high-resolution MRI and cortical pattern-matching methods to map gray matter differences in 28 adults with bipolar disorder ?70 percent of whom were l...

3 proteins may play important role in nerve-cell repair

...olleagues used nerve cells obtained from the brain tissue of rats and mouse neuroblastoma cells growing in culture to learn more about the three proteins and their involvement in cAMP regulation. The researchers added additional copies of the three genes to the cells to increase the levels of the protei...

Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease

...ughout the brain, did much more than replace brain tissue destroyed by the disease. Some of the transplanted...human infants. The accumulation of lipids in brain tissue destroys the brain cells instrumental in controlling and coordinating body movement and results in i...

A genetic 'gang of 4' drives spread of breast cancer

...illaries, so that the cells can penetrate the lung tissue to grow there. "These findings provide a beautiful explanation for how the genes that we identified in breast cancer patients as being associated with lung metastasis manipulate blood vessels to give them an advantage both in the primary tumors and...

Newborn brains grow vision and movement regions first

...bstract reasoning. In addition, the type of brain tissue called gray matter, which contains most of the neu...ells, grew much more robustly than another type of tissue called white matter, which contains the connecting fibers between neurons in different brain regions...

Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

...orted in 2005 that they had found evidence of soft tissue inside the fossilized femur, a discovery widely covered. After seeing one such story in the New York Times, Cantley contacted Asara who, in 2002, had sequenced collagen fragments from 100,000- to 300,000-year-old mammoth bone samples sent by Schweitz...

Radiation therapy combo cures prostate cancer long-term

...radiation therapy is less invasive, spares healthy tissue and helps patients return to regular activities sooner than surgery."...

Cancer-killing invention also harvests stem cells

...ures stem cells, he harvests them for later use in tissue engineering, bone marrow transplants, and other ap...te blood cells migrate to bacterial infections and tissue injuries. King set out to find a way to duplicate this natural process. First, he noted that th...

Liver regeneration may be simpler than previously thought

...ientists have shown that cells that participate in tissue regeneration behave as if they were part of a growing organ in an embryo. In other words, the cells act as if the liver is growing, as do other organs in a developing embryo. Many of the proteins that induce organ regeneration have been identified...

Scientists discover new, readily available source of stem cells

...t these cells will provide a valuable resource for tissue repair and for engineered organs as well," said An...the stem cells were successfully used to grow bony tissue in mice, and liver cells were able to secrete urea, which the liver produces from ammonia. The po...

Penn study on olfactory nerve cells shows why we smell better when we sniff

...t, the septal organ, is a patch of smell-sensitive tissue on the septal wall of the nasal cavity. The second...he main olfactory epithelium, is a smell-sensitive tissue inside the nasal cavity. Synchronized Breathing The septal organ is only about 1 percent the...

Scientists clone mice from adult skin stem cells

...r diseased organs. "Scientists are well-aware that tissue derived from someone else's embryonic stem cells w... stem cell lines, a process which can be done in a tissue culture dish and which is simpler and more efficient than generating a cloned mouse. Although this p...

Why doesn't the immune system attack the small intestine?

... instruct key immune system cells to leave healthy tissue alone. The finding, which illuminates a previously...ays ignore the small intestine, leaving this vital tissue unharmed? "It's obvious that T cells must be able to ignore ?or become 'tolerized' to ?normal inte...

Scientists use nanoparticle to discover disease-causing proteins

...ostic methods must be done on minute dead blood or tissue cell samples in a laboratory dish, said Andy Tao, ... bind. "Taking small samples of blood, cells or tissue to study extracted proteins in laboratory dishes damages the sample and the natural environment is d...

UW launches study testing adult stem cells for heart damage repair

...rs, genes or stem cells to promote blood vessel or tissue growth," explains Amish Raval, head of cardiovascular regenerative medicine at UW Health. The goal with this approach, he says, is to promote either angiogenesis, which is the growth of new capillaries; arteriogenesis, or the maturation and enlarge...

Putting an old drug to a new use

...romotes the formation of toxic radicals leading to tissue damage. Iron overload is the consequence of one of the most common genetic disorders in Europe, hereditary hemochromatosis, which affects about one in 300 Europeans. Excess iron also accumulates after repeated blood transfusions and can cause organ f...

Surgeons develop simpler way to cure atrial fibrillation

... device is a clamplike instrument that heats heart tissue using radiofrequency energy. By holding areas of the heart within the jaws of the device, surgeons can create lines of ablation, or scar tissue, on the heart muscle. In the older Cox-maze III procedure, the lines of ablation were made by cutting the ...

Cartilage discovery offers arthritis hope

...by the wear and tear of the smooth, hard cartilage tissue that covers the ends of bones allowing them to glide over one another at the joint. Scientists have long known that cartilage gets its strength from interlocking millimetre-long collagen fibres that work in a similar way to the load-bearing steel r...

New molecular pathway could reveal how cells stick together

...produce system responses, like the remodeling of a tissue during development or for orchestration of an inte... defect that causes problems for the animal at the tissue level." Now she plans to find how ninjurin affects breathing tube development, as well as the rol...

UCSF brain tumor vaccine trial shows promising results

...gerprint. The vaccine is intended to leave healthy tissue unaffected and limit the debilitating side effects... an area that could affect her speech. The removed tissue was sent to Antigenics, the Massachusetts biotech company that produces the vaccine from the patient...

1 2 3 4 5 6 7 8 9 10