Clemson bioengineer gets national boost
...awaken the ability of spinal cord nerve bundles to regenerate through a controlled environment created by an implantable bridging device. By mimicking the spinal cord, using biomaterials and scaffolds along with therapeutic agents loaded in nanostructured biomaterials, scar formation at the lesion site will be ...Liver regeneration may be simpler than previously thought
...iver is one of the few organs in the body that can regenerate from as little as 25 percent of its tissue," says Seth Karp, assistant professor of surgery at Harvard Medical School, Boston, and main author of the study. "It is not known how the liver does it, but our results provide some details of what makes th...3 proteins may play important role in nerve-cell repair
...to explain, in part, why mature nerve cells cannot regenerate damaged axons. "Our findings provide additional evidence that cAMP plays an important role in axon growth and suggest that these receptors are likely to play a major role in regulating cAMP production in nerve cells," says Saeki, an associate prof...The sturdier sex? -- Study by Pittsburgh scientists finds female stem cells work better
...ells derived from muscle have a greater ability to regenerate skeletal muscle tissue than male cells, according ...rophic mice and then measured the cells ability to regenerate dystrophin-expressing muscle fibers. They then calculated the regeneration index (RI) the ratio o...Study shows isolation of stem cells may lead to a treatment for hearing loss
...n early life, these precursor cells may be able to regenerate hair cells, but their capacity to do so becomes li...ivation of cochlear stem cells in the inner ear to regenerate new hair cells. Clearly we have miles to go before we reach our end goal, but the exciting part is ...Slow but sure -- Burned forest lands regenerate naturally
...nt" chance that an adequate level of conifers will regenerate naturally, in sites that had no manual planting or...rub layer." The study also showed that trees would regenerate at considerable distances from seed sources. "The natural regeneration on many of these sites is a...Whole body regeneration from a blood vessel
...s many an inquisitive child knows, salamanders can regenerate lost limbs or tails; and as lab investigators know, zebrafish can regrow lost fins. Of course, humans and other "higher" vertebrates must make do with repairing rather than regenerating damaged tissues. Though whole body generation (WBR) does occur, ...Making daughters different -- how immune cells take divergent paths when fighting infections
...at fight the infection and die; but some, instead, regenerate to take the place of the mother cell, leaving an immunologic memory to recognize the invading microbe in the future. Given the simplicity of this scenario, surprisingly few examples have been well-characterized that show how daughter cells can be d...ACS News Service Weekly PressPac -- Feb. 21, 2007
... with uses ranging from therapeutic cosmetics that regenerate damaged skin to controlling algae blooms in lakes and ponds, according to researchers in New York. In a report scheduled for the April 9 issue of the ACS bimonthly journal Biotechnology Progress, Vishal Shah and colleagues estimate that restaurants...Cells passed from mother to child during pregnancy live on and make insulin
...ble that the maternal cells may even be helping to regenerate damaged tissue in the pancreas." The investigators are excited about the observation that maternal microchimerism results in cells that make insulin - these maternal stem cells could provide new insights into how insulin producing beta cells are g...Selective marker found to indicate aggressive form of breast cancer
...bilizing the structure of adult stem cells as they regenerate and divide into daughter cells. "Normal basal epithelial tissue produces nestin, but basal epithelial tumors produce a tremendous amount of nestin, which likely represents an abnormal expansion of the basal epithelia." DiRenzo said. "If it is ind...How does a zebrafish grow a new tail?
...lood components, skeletal muscles and skin. We can regenerate liver tissue and repair minor injuries to bone, mu...afish to restore their tail fins. "The ability to regenerate body parts such as those that are damaged by injury or disease," said Dr. Randall Moon, professor of...... behavior of the adult stem cells that continually regenerate the colon in mice. This probably plays a role in the increased risk of colon cancer, says Feinberg. Spotting epigenetic markers like lost IGF2 in humans could be used in future cancer-prevention strategies. Says Feinberg, It could be possible to sc...From managing sugar to managing healing
...f topical insulin on keratinocytes, the cells that regenerate the epidermis after wounding, and on microvascular endothelial cells, the cells that restore blood flow. Using various cell and molecular techniques, the researchers discovered that insulin stimulates human keratinocytes in culture to proliferate a...Newts which regrow their hearts
... cellular mechanisms in this impressive ability to regenerate and have discovered the remarkable plasticity of n...ing for a particular reason: whereas humans cannot regenerate damaged heart muscle adequately after a heart attack and the destroyed muscle tissue scars over inst...Fragmentation rapidly erodes Amazonian biodiversity
...nt and knock down a lot of trees. The trees that regenerate in their place are very different from the trees that died. When you fragment a forest, the winners are common pioneer and generalist species that like forest disturbance, said Laurance. The losers are rare, slow-growing tree species that provide f...Getting to the heart of the heart
...o bring researchers a step closer to being able to regenerate tissues to repair congenital heart defects in children and damage caused by heart attacks in adults. The two laboratories are now trying to determine the relationship between the two types of progenitor cells discovered. Both papers will appear in...Starting over: Wnt reactivates dormant limb regeneration program
... Institute for Biological Studies has been able to regenerate a wing in a chick embryo a species not known to b...ile inactivating it in animals known to be able to regenerate their limbs (frogs, zebrafish, and salamanders) shuts down their ability to replace missing legs and...In young rats, researchers find a reaction to spinal cord injury that speeds recovery
...r half links the body to the brain. Axons cannot regenerate when they are completely severed, but researchers believe that in a partial injury, surviving nearby axons that serve the same general body area and function can "sprout" new connections to those injured nerve cells that have lost some of their axons......cle. Many cell biologists believe the ability to regenerate damaged heart tissue may be present in all vertebr...ts and zebrafish, that have an elevated ability to regenerate lost or damaged tissue," said Kenneth Poss, Ph.D., senior researcher for the team, which published t...