Punching the timeclock of life
...n the individual . The gerontologist also rejects the commonly accepted theory that aging happens by chance and that, like a car, an organism runs well until it starts to breaks down and eventually just stops working.In research published in the Sept. 27 edition of the Journal of Cell Biology, Longo...Cells from adult bone marrow can be converted into brain stem cells for transplantation
...mmune-system problems that can arise when the body rejects cells from an outside source. For the study, the researchers took the adult human bone marrow stromal cells and cultured them with growth factors. Other benefits of this process are that the cells can be converted quickly within a few weeks and a s...Pittsburgh NMR Center for Biomedical Research at Carnegie Mellon
...d organs often fail when a patient's immune system rejects the new implant. Early diagnosis and treatment of organ rejection is critical. Center investigators are developing novel, non-invasive MRI-based methods to monitor organ function and the accumulation of immune cells at a transplanted organ. One of th...U-M bone marrow transplant expert receives Doris Duke Charitable Foundation award
...splant, the donated bone marrow, called the graft, rejects cells in the host or patient. By identifying all the complex biochemical and cellular interactions involved in GVHD, Ferrara hopes to find ways to help immune system cells in donated bone marrow kill the patient's leukemia cells without risking the ...European scholars support development of germ line modification
...ntion is drawn in particular to section C.5, which rejects the view that human germ line modification will necessarily violate human dignity. In the view of participants, "The so-called right to be born with a human genome that has not been modified by artificial means, was not recognized here as being a cl......combines with seawater to make methane hydrate, it rejects the salt in the water. Therefore, fresh water is produced when the concentrated hydrates are melted. It's a desalination process where the methane can be recycled to continue the process. For areas thirsty for water, this could be a real windfall.......tion drive and is the US's chief smallpox adviser, rejects Prior's claims. He says the Lister strain was used to eliminate the virus in countries where it was still circulating, including Indonesia, Bangladesh, Nepal, Pakistan and Kenya. Even India used it successfully in areas where the virus was still ende...Gene linked to type 1 diabetes
...r filtering and processing. The thymus filters and rejects T cells that would harm the body. In a process that is less understood, a healthy thymus then incubates T cells that will be released into the body to fight infections. In type 1 diabetes, something goes wrong. T cells are released from the thymus 't...New cellular evolution theory rejects Darwinian assumptions
...ich he refers to as inventions, along the way. He rejects the widely held notion that endosymbiosis (which led to chloroplasts and mitochondria) was the driving force in the evolution of the eukaryotic cell itself or that it was a determining factor in cellular evolution, because that approach assumes a beg...Gene study determines how humans are related to fruit flies and nematode worms
...upporters as slow-evolving and found that it, too, rejects the Ecdysozoa hypothesis," explains Blair. "Even the original emphasis on shedding in Ecdysozoans has been misleading, because the structure that is shed in arthropods is completely different from that in nematodes, and some vertebrates such as snak...Animal study finds embryonic stem cells can repair heart muscle
...ikely to trigger immunoreaction, in which the body rejects the foreign intruder," Morgan explains. This is particularly important to heart failure patients, the majority of whom are too sick to receive immunosuppressive drugs. "There's a 1 percent incidence of CHF among the population at large, and that figu...New application of imaging technique can change how scientists look at proteins
... in blood clotting and whether the body accepts or rejects medical implants. Metastasis, or the spread of cancer, is another area that could be better understood through fluorescence resonance energy transfer, Vogel said. "Some cancer lines are depleted of fibronectin so they are not 'sticky' and migrate mu...NSF awards two plant genome grants to University of Minnesota
... corn is crossed with oats. The hybrid plant often rejects all 10 corn chromosomes, but some plants retain one corn chromosome, Phillips said. Hybrids retaining each of the corn chromosomes have been produced and irradiated, which breaks the chromosomes into fragments. Hybrid plant lines with a single fragme......une system of any patient who receives transplants rejects the foreign cells, unless the recipient's immune response is suppressed. Unfortunately, current therapies that suppress the immune system target not only the transplanted organ or cells but also generally reduce immune responsiveness, thereby greatl...Major grants support immunology, transplant and diabetes research at the University of Chicago
...se islets from the recipient'simmune system, which rejects foreign tissue. Current techniques of protectingthose islets suppress the entire immune system, increasing the recipient's riskof infection and cancer. "It's like tearing down your house, just to get rid ofthe mice," said Bluestone. The JDF Center w...Managing For Deer, Moose, Elk, Wolves -- And People
...sumption as if it were a scientifichypothesis, and rejects it. Research reveals that moose populations surgedupward in the early 1980s when the number of wolves on the island declined andcrashed in 1996 when eighty percent of them died, primarily from starvation. These facts,combined with the possibility ...Researchers Discover Way To Grow New Kidneys In Rats
...lso was key to reducing the immune response. A rat rejects anadult kidney from another rat within a week. "A rat kidney is sufficientlydifferent from a human kidney to be a poor transplant choice, but pig kidneysare similar in size and function to those of humans. Hammerman suggests thatdeveloping pig kidne...The First Rejection: Eggs Sequester Bits Of Sperm For Later Elimination
...ve that can be packed into it) gets. The egg still rejects the paternal mitochondrial DNA by sequestering it to the developing fly's gut for future elimination. This work indicates that "previously unrecognized sperm-egg interactions are important to the success of a developing zygote," says Karr. One intri...Jefferson Scientists Link Some Cases Of Scleroderma To Damage From Lingering Fetal Cells
...ication seen when the body’s immune system rejects a bone marrow transplant. "What’s unusual is that in classic chronic graft-versus-host disease, the clinical picture looks like scleroderma. The skin becomes hard and thick," Dr. Jimenez says. "These findings may open up some ...