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Tag: "damaged" at biology news

Wisconsin scientists grow critical nerve cells

...ritical guideposts for scientists trying to repair damaged or diseased nervous systems. Motor neurons transmit messages from the brain and spinal cord, dictating almost every movement in the body from the wiggling of a toe to the rolling of an eyeball. The new development could one day help victims of spin...

Deficient DNA Repair Capacity Associated With Increased Risk Of Breast Cancer

Deficiencies in the ability of cells to repair damaged DNA are associated with an increased risk of breast cancer, according to a new study in the January 19 issue of the Journal of the National Cancer Institute. DNA repair is the system of defenses designed to protect the integrity of the genome. Stu...

Priming embryonic stem cells to fulfill their promise

...ank-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 typesfound in...

“Nano-scissors?laser shows precise surgical capability

...enetic andmolecular factors that determine whether damaged nerve cells regrow.Ben-Yakar developed the femtosecond laser surgery technique using thelaboratories and equipment of Dr. Robert Byer, a Stanford Universityprofessor, while doing post-doctoral work. The paper’s other co-authorsare Mehmet Fatih Yanik ...

U-M scientist to talk about tissue engineering at AAAS

...em in the lab, then reintroducing the cells into a damaged area, like a jaw bone damaged too badly to simply heal on its own. A tiny scaffold helps direct the engineered cells to the right ...

Gene therapy converts dead bone graft to new, living tissue

...ils of orthopedics ?cartilage repair. Unlike bone, damaged cartilage, even in a healthy person, can't re-grow...e-specifically target the genes to the edge of the damaged cartilage during arthroscopic surgery, but we're looking to use the same idea of triggering the cart...

Sea skate experiment sheds light on human cell transport

...ved between cells. And when channels are blocked, damaged cells can't die. This cell "suicide" is one of the body's defenses against cancer. "There is a possible relationship between operation of these channels and the uncontrolled multiplication of cancer cells," Goldstein said. "If so, this research point...

Researchers add new tool to tumor-treatment arsenal

... severe, or allowing the cancer cell to repair the damaged DNA. If the DNA is repaired, cells can continue to multiply. The dilemma is that high doses of DNA-damaging agents can be toxic, and doses that are too low allow for DNA repair and further cell growth. Thus, says Dr. Thomas, there is need for drugs ...

Research Gives Hope For Liver Damage

...to understand the mechanisms by which the liver is damaged and repairedand may lead to future treatments. Researcher Dr Jeremy Duffield explained: "The links between the immunesystem, inflammation and scarring in the liver have not been wellunderstood, and this has hindered progress in finding ways to preve...

DNA Recombination and Repair—A New Twist to RecA Function

...rive strand invasion through difficult passages of damaged DNA. ...

NJIT Presidential Award winner takes stem cell research another step

...ne tissue - to regenerate and repair the patients' damaged bones. She is performing tests on diabetic animals...stem cells. The cells would seek out the patient's damaged bone tissue and begin to generate healthy tissue. After six months of treatments, the patient's bone...

Rush Physicians Using Gene Therapy For Heart Patients With Moderate To Severe Chest Pains Who Do Not Benefit From Other Treatments

...sing catheterization to heart tissue that has been damaged from insufficient blood flow. Once the catheter reaches the targeted site inside of the heart, the VEGF-2 is injected into the heart muscle region with inadequate blood supply. The DNA plasmid is then taken up by the middle muscular layer of the hea...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

...al 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 microsurgical ...

Unprecedented water level rise in Somalia

... bridges in the south-western part of the city and damaged huts and houses on the banks of the river as well as electric power lines. The destruction of the bridge limits the accessibility and mobility of the population around the city, affecting daily activities such as commuting to work, school and accessi...

Ophthalmologists implant five patients with artificial silicon retina microchip

...al 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 microsurgical ...

Artifical cornea lets woman blind 20 years see

...nd reduced the ability of her eyes to soothe their damaged surfaces by remaining moist. She came to rely upo...d in between. The surgeon then removes most of the damaged cornea from the patient's eye so that the new prosthesis can be sewn into place using sutures to con...

World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics

...orage, transport time and the pancreas is severely damaged by toxins which circulate in the blood stream after brain death." "Our expectation is that these islets from near-perfect organs will work better, although it's too early to tell," he says. The recipients use the same drugs to prevent organ rejecti...

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

...ually 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 applicatio...

WHO Warns Of Increased Risk Of Vector-borne Diseases In Tsunami-affected Areas

...ts of WHO's long-term strategy to rehabilitate the damaged or destroyed public health infrastructure. To implement this health system rehabilitation strategy, WHO urgently requires US$67 million for activities through the next six months. Notes to editors The tsunami in Southeast Asia, has at least in some...

Single stem cells from bone heal a broken heart

...a foundation on which new approaches to repair the damaged heart can be based. Related : Clonally expanded novel multipotent stem cells from human bone marrow regenerate myocardium after myocardial infarction, JCI ...

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