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Tag: "replace" at biology news

Bioartificial kidney under study at MCG

...rrect abnormalities in blood chemistry; they don't replace kidney function, " says Dr. Szerlip. The kidneys also secrete hormones, help determine how the body metabolizes calcium and phosphorus, stimulate red blood cell production, play a role in blood pressure regulation and clear and metabolize cytokines ...

Wisconsin scientists grow critical nerve cells

...lls grown in the lab, scientists could, in theory, replace dying motor neurons to restore function and alleviate the symptoms of disease or injury. Much sooner in the future, the advance will allow researchers to create motor neuron modeling systems to screen new drugs, says study leader Su-Chun Zhang, an a...

Priming embryonic stem cells to fulfill their promise

...d the blank-slate, raw material needed torepair or replace damaged or missing liver, nerve, muscle, and othertissues and organs. However, in order to fulfill their therapeuticpromise, scientists believe that stem cells must first be coaxed todifferentiate, or mature, into precursors of specialized cell types...

BRCA1 causes ovarian cancer through indirect, biochemical route

...ical of some sort-that scientists might be able to replace in people with identified BRCA1 mutations, making their risk of ovarian cancer drop precipitously. In addition, once the chemical messenger that's affected has been identified, it will be much easier to diagnose a predisposition to ovarian cancer or...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...duce cancerous white cells or faulty red cells and replace them with healthy stem cells from donors. If the transplants succeed, the donated stem cells repopulate the blood with healthy red and white cells. The St. Jude team showed that the more copies of tiny rings of DNA called signal-joint TRECs (sjTRECs...

In the migratory marathon, parasitized monarchs drop out early

...kweed species in milder climates, could ultimately replace the large migratory populations with smaller remnants that breed year-round and do not migrate. Study results suggest that if migration is lost from this system, remaining populations will become heavily parasitized. More generally, this study demon...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

...electrical impulses. The purpose of the chip is to replace damaged photoreceptors, the "light-sensing" cells of the eye, which normally convert light into electrical signals within the retina. Loss of photoreceptor cells occurs in persons with retinitis pigmentosa (RP) and other retinal diseases. The micros...

Ophthalmologists implant five patients with artificial silicon retina microchip

...electrical impulses. The purpose of the chip is to replace damaged photoreceptors, the "light-sensing" cells of the eye, which normally convert light into electrical signals within the retina. Loss of photoreceptor cells occurs in persons with retinitis pigmentosa (RP) and other retinal diseases. The micros...

Great White shark evolution debate involves WSU Lake Campus geology professor

...ako shark." He added that because sharks regularly replace their teeth, it is relatively easy to obtain tooth samples through fossil field work along the Atlantic seaboard. Ciampaglio acknowledges that people seem to have a fascination with sharks. "The general public seems to like sharks, and maybe this is...

Stem Cell Research Shows Potential for Replacing Tissue Damaged in Heart Attacks

...ue, which eventually may help doctors learn how to replace tissue damaged as a result of a heart attack. The potential for ES cells to replace damaged or diseased cells in adult tissues has caused extraordinary interest in their therapeutic ap...

Alaskan puzzles, monitoring provide insight about North Pacific salmon runs

...wever, have declined for a decade, failing even to replace themselves in spite of an almost complete halt to harvesting, says Ray Hilborn, UW professor of aquatic and fishery sciences. "The Kvichak sounds a lot like Columbia River or Puget Sound stocks," he says. Still, 20 miles away from the Kvichak are s...

Stem cells from brain transformed to produce insulin at Stanford

...rk with other sources of stem cells, could one day replace human islet cells in people with diabetes. Right now, people with diabetes face a lifetime of insulin injections. In rare cases, some patients can receive cell transplants from cadavers, but that source of cells is far smaller than the total number o...

Reservoirs may accelerate the spread of invasive aquatic species, researchers say

...ng water in a region and that reservoirs typically replace varied stream habitats with habitats more similar to each other. Compared to natural lakes, reservoirs are usually shallower, more connected to other water bodies, and more laden with suspended and dissolved solids; they also have a higher and more v...

Some Brain Cells 'Change Channels' To Fine-tune The Message

...roteins, called PICK1 and NSF for short, that help replace channels that let charged calcium ions in with another kind of channel that keeps calcium out. If muscle-controlling nerve cells can do the same thing, forcing the swap might help protect them from a calcium overdose that can kill them in Lou Gehrig'...

Nano-bumps could help repair clogged blood vessels

...h research. Further research is planned that will replace the titanium disks with tube-shaped pieces of the nano-featured metal, which will resemble the actual shape of real stents. ...

Protein helps regulate the genes of embryonic stem cells

... type could be derived from stem cells and used to replace damaged or diseased tissue. Magnuson and his colleagues chose to study how eed influences genes in embryonic stem cells because they thought that would be directly applicable to stem cell technologies. "In order to get a handle on individual stem c...

Genetic therapy reverses nervous system damage in animal model of inherited human disease

...rvive into their teens. "Through gene therapy, we replace a 'broken' gene responsible for alpha-mannosidase with the correct, functioning copy, to dramatic results," said John H. Wolfe, a professor of pathology and medical genetics at the Penn School of Veterinary Medicine and a neurology researcher at Chil...

Road salt affects mitigation wetlands

...he way to go when planning constructed wetlands to replace those destroyed during road building, but a Penn S...ansportation constructed as mitigation wetlands to replace all the ones that were destroyed by the new road," says Dr. Pamela Silver, professor of biology, Pen...

Confocal imaging promises early detection of skin cancer

...spital specialist. With our new system, we hope to replace these visits with just one visit and by detecting skin cancer as early as possible, to offer patients the most complete treatment.?/p> Doctors can choose from some 40 different imaging techniques to detect and diagnose skin cancer, the simplest b...

UCLA scientists store materials in cells natural vaults

...ut harming healthy tissue * Enzyme delivery to replace missing or defective enzymes, such as those that cause Tay Sachs disease * DNA delivery to correct genetic mutations * Timed release of drugs, enzymes and DNA * Extracting and imprisoning cellular toxins into the vault * Stabilizing p...

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