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Tag: "organ" at biology news

Type of stem cell found to reside in transplanted lungs

...ult lung ?something that might hold true for other organ systems as well. "Potentially the most importan...ich makes us believe that they are specific to the organ they are isolated from." The study appears online March 8 in advance of publication in the April ...

OHSU surgeon implants donated tissue allografts

...neficent with respect to providing their bodies to organ donation programs in the entire country." Until recently, however, it was difficult to access some of these tissues for transplantation. Now, as a result of a new cooperative conceived by OHSU surgeons and administrators, Oregonians will increasin...

Horse genome assembled

...opment, has implications in reproduction, clinical organ transplantation and immune regulation. In addition to sequencing the horse genome, researchers produced a map of horse genetic variation using DNA samples from a variety of modern and ancestral breeds, including the Akel Teke, Andalusian, Arabia...

Researchers learn what sparks plant growth

...ults." Roots and shoots are a plant’s two major organ systems. For this study, published in the March 8, 2007, issue of the journal Nature, the scientists examined shoots and the three layers of tissues that make up the shoot system: the epidermis, which is the waxy, protective skin; the mesophyl tissue...

Transfusion expert urges wider use of filtered blood

... to someone, Blumberg said, is akin to a temporary organ transplant. In many cases the transfused blood modifies a person's immune system ?either in a favorable or unfavorable way ?by interacting with the patient's own white cells. Removing the foreign white cells from transfused blood reduces the chanc...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...endees will hear the acoustical behavior of a pipe organ in a very large room (3aAA5). Jack M. Bethards of Schoenstein & Co. Organ Builders of San Francisco ( jack@schoenstein.com ) will discuss the acoustical and architectural considerations for installing organs in large spaces (3aAA4). SCIENCE ...

LIAI scientists make important finding on cytomegalovirus transmission

...orns or persons who are immuno-compromised such as organ transplant recipients or AIDS patients. Ware said, "The main importance of these experiments is identifying the critical molecular targets controlling virus persistence, and two ways in which we can modulate immunity in vivo with the desired resul...

Machine preservation may promote more organ sharing

... cooler ?may lower hospital costs, improve initial organ function, and promote greater use and more sharing...reserved by pump or cold storage. "The critical organ shortage poses a challenge to optimize the use and function of all organs from deceased donors," sai...

Hearts of male and female rainbow trout are different

... endocardium layer. The trout heart is a composite organ and layer distinction is important because the epicardium, much like the human heart, receives oxygenated blood via the coronary circulation. Conversely, the endocardium is supplied by only deoxygenated blood returning from the rest of the body. Not ...

Mice with a migraine show signs of brain damage

...rain develops a voracious demand for energy as the organ attempts to restore the delicate chemical balance that is lost in the initial throes of a phenomenon known as cortical spreading depression, which is thought to underlie many migraines. Even though the brain’s arteries expand dramatically and make...

'Virtual Patient' to simulate real-time organ motions for radiation therapy

..."Live patients are not static beings, and a moving organ such as the lung or heart is a main concern in rad...ent or imaging of tumors that are affected by such organ movement," Xu said. "In order to determine accurate and effective radiation dosages, doctors must co...

New research shows sharks use their noses and bodies to locate smells

...on called the lateral line. The lateral line is an organ used by all fish to detect, with exquisite sensitivity, movement and vibration in the surrounding water. According to the research team, this is similar to how humans can sense air flow with the small hairs on the face. Until now, it had not been dem...

'Nurse cells' make life and death decisions for infection-fighting cells

...n as thymocytes or T cells, live in the thymus, an organ in the upper portion of the chest. Loss of the thymus results in severe immunodeficiency and increased susceptibility to infection. The function of T cells produced by the thymus is to recognize harmful invaders. Once invaders have been identified, T...

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

... transplanting cells or organs from other people — organ rejection, which requires organ recipients to take immune-suppressing drugs for the rest of their lives. Huge numbers of stem cel...

New vaccine prevents CMV infection and disease in mice

... prior to child-bearing years, day care providers, organ transplant recipients, or as part of regular childhood immunizations. “This approach may also be valid for a number of diseases associated with persistent or latent infections, including all types of herpes-associated diseases, AIDS, or hepatitis...

Electric fish conduct electric duets in aquatic courtship

...which emit weak electric fields from a batterylike organ in their tails to sense their surroundings and communicate their species, sex and social status with other fish. It is also the first study to successfully sort signals in electric fish based on sex. The research, which is the cover story in the J...

Reconstructing the biology of extinct species: A new approach

...ves and the dimensions of an important part of its organ of balance, the three semicircular canals of the i... The basic hypothesis of the project was that the organ of balance -- which helps stabilize an animal's gaze and coordinate its movements as it travels thro...

Research finds that circadian rhythms dominate all life functions

...- such as genes responsible for the function of an organ or a specific tissue -- are chaotic under this state and don't function as a group. Lack of orchestration can be easily confused with the lack of oscillation. This makes the rhythm much harder to detect. "It's like a conductor walking away from an ...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...coordinating donor eggs. “The long-term goal is organ banking,” says Dr. Song, because even though there are insufficient numbers of donors for those on transplant lists today, another piece of the puzzle is developing techniques for growing organs. In fact, he is collaborating with scientists at Yale U...

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