Tag: "pigment" at medical news
Study Finds St. John's Wort Can Cut Alcohol Consumption
... blackbeads. When rubbed, the plant releases a red pigment
containing hypericin. The UNC-CH experiments involved rats that were selectively bred toprefer alcohol. When given a choice, such rats will consume little water, butmuch alcohol, said Rezvani, also adjunct associate professor of social medici...
DNA-Based Cancer Vaccine Shows Promise To Successfully Treat Melanoma In Mice
...une cells attacked both the melanoma cells and the pigment
cells in theskin of the mice, which share a protei...mor from spreading, and as a side effect,destroyed pigment
cells." Although immunologists know that autoimmunity can accompany an immune response,Dr. Houghton'...
Discovery: Experiments Confirm Novel Eye Pigment Controls Circadian Rhythm
... Hill scientists has proven that a light-sensitive pigment
theydiscovered in the eye, the skin and part of th... datawas, we decided to create a mouse lacking the pigment
to see what effect it hadon the mouse," said Dr. Aziz Sancar, Kenan professor of biochemistry andbio...
Red wine can help maintain immune system, UF researcher finds
...ound aids in maintaining normal immunity. The rich pigment
in red wine is due to antioxidants and blood tests showed thatmice who drank wine had two times more antioxidant capacity than the animals whodrank ethanol or water. Percival used cabernet sauvignon and muscadine grapes to see if the variety ofwine a...
Study provides new evidence that chemical in tomato sauce may help fight prostate cancer, particularly in black men
...d high. Researchers believe that lycopene, a red pigment
with high antioxidant potential, is the most likely agent involved in this effect. Tomatoes contain more lycopene than any other commonly consumed food, but tomato products vary in lycopene content. Tomatoes cooked in oil, such as tomato sauce, are b...
Retinal cell implantation shows promise and improvement in advanced Parkinsons disease patients
... trial, Dr. Watts and colleagues implanted retinal pigment
epithelial (RPE) cells attached to gelatin microcarriers into the brains of six patients with advanced PD. RPE cells, normally found in the back of the eye, are cultured in the laboratory to produce cells for this treatment. These cells provide a s...
Mastiffs could aid treatment of retinitis pigmentosa
... night vision, and a defect in the light-sensitive pigment
in the rods, called rhodopsin. Light particles, called photons, striking rhodopsin in each of some millions of rods cause the rhodopsin protein to change shape, starting a chemical-signaling cascade that enables the brain to detect light and perceive...
New research suggests rapid screening technique for macular degeneration
...ups as test samples and resonant excitation of the pigment
molecules with narrow-bandwidth blue light from a ...od needed to provide a reading for average macular pigment
concentration will be published in the June issue of JOSA A....
New clinical research study evaluates novel cell therapy
...testing whether a novel cell therapy using retinal pigment
epithelial (RPE) cells attached to tiny gelatin bead microcarriers implanted in the brain can improve the symptoms of Parkinson's disease. The investigational cellular product (Spheramine), which is being evaluated in a new clinical study called STEP...
Vision-producing cells fail 'taste-test,' treat key light-detecting molecules identically
...s contained, in addition to their usual pigment, a pigment
found only in cones. The researchers expected the ...erently -- picking up signals only from its native pigment
and spurning the other -- or to behave a little like cones. "Surprisingly, the cell's response to li...
East meets West with a traditional herbal cure for jaundice
...tes of the eyes following accumulation of the bile pigment
bilirubin, is extremely common in newborn infants. In Western nations jaundice is most commonly treated with exposure to light (phototherapy), however a drug therapy would also be desirable. In the January 2 issue of the Journal of Clinical Investiga...
Niche and higher margin esters to counter price erosion and commoditization
...dded features such as thickening, anti-irritation, pigment
wetting, water solubility, and multi-functionality creates a more diverse and innovative product portfolio. Emulsifying, softening, and detergency characteristics of fatty esters provide advantages of high performance and custom design versatility, t...
Extended exposure to sunlight may be related to the development of certain age-related eye diseases
...three times as likely to develop increased retinal pigment
and were more than twice as likely to develop early ARM within ten years compared to participants who reported being exposed to less than two hours per day of sunlight during the same periods. In participants who reported being exposed to the most su...
Melanin makes skin vulnerable to harmful ultraviolet rays
...llow or black hair, as well as albino mice with no pigment
at all. The researchers then irradiated the mice with UV rays that are about the same as what breaks through the ozone layer, affecting humans. The cell death was concentrated around the hair follicles, which are the only location of melanin in mice...
Pigment cell transplantation appears helpful for treating patients with stable vitiligo
...o the articles, vitiligo is one of the most common pigment
cell disorders, distinguished by depigmented patch...can cause physical discomfort. Transplantation of pigment
cells (called melanocytes) is another treatment option in patients with vitiligo. Nanny van Geel,...
Scientists identify protein critical to melanoma growth
...p looked for genes regulated by MITF, they found a pigment
gene called SILVER, and they noted that, surprisingly, it was located just a stone's throw, genetically, from CDK2 on the chromosome. "It was dumb luck," says Fisher, and it led him and his colleagues to recognize that both SILVER and CDK2 were unde...
UCLA-VA study names India dietary staple as potential Alzheimer's weapon
...ly altered mice suggests that curcumin, the yellow pigment
in curry spice, inhibits the accumulation of destructive beta amyloids in the brains of Alzheimer's patients and also breaks up existing plaques. Reporting in the Dec. 7, 2004, online edition of the Journal of Biological Chemistry, the research te...
UCSD-Utah team develops mouse model to test therapies for macular degeneration
... called lipofuscin that accumulates in the retinal pigment
epithelium (RPE) and results in its degeneration together with photoreceptor cells. Vision loss follows. Noting that scientists have recently linked mutations in a gene called ELOVL4 to AMD and STGD, the UCSD-Utah investigators developed mice with...
Brain imaging study may hold clues to onset of schizophrenia in people at high risk
...d to de-oxygenated hemoglobin, the iron-containing pigment
in red blood cells. Researchers then can quantify these signals to generate maps of various brain functions. Fifty-two study participants were divided into four groups: "ultra-high-risk," where participants experience symptoms but the illness is not...