Tag: "stimulates" at biology news

Molecular Effect Of Vitamin E On Plaque Formation Identified

...ch promotes plaqueformation. Studies have shown it stimulates adhesion of white blood cells ormonocytes to the a...ng, promotes uptake of cholesterol by the cellsand stimulates smooth-muscle-cell proliferation. Also, increased levels ofIL-1beta have been observed in the corona...

Dietary Lutein Inhibits Mammary Tumor Growth And Normalizes Immune Balance In Tumor-Bearing Mice

...of lutein in tumor immunity byexamining hoe lutein stimulates the numbers and functionality of immune cellsthat suppress tumor development. Mice were fed a diet containing zero (control),0.002, or 0.2 percent lutein (by weight) from marigold extract. After two weeks,half the mice were inoculated with mammary tu...

Researchers Discover A Common Protein's Deadly Role In Breast Cancer

...," he stressed,"but it is possible that it aids or stimulates tumor growth once the tumor hasbeen established." In examinations of human breast cancer cells and human breast tumor specimens,the scientists discovered that the insulin receptor is present in two slightlydifferent forms - small amounts of the fami...

Vitamin D Deficiency May Increase Risk Of Hip Fracture In Older Women

... they eat less or spend less time in thesun, which stimulates the body's own production of vitamin D. Experts do not understand fully the causes of osteoporosis. However, they doknow that lack of estrogen which accompanies menopause, diets low in calcium,and lack of exercise contribute to the problem. Eighty...

Drug stops blinding blood vessel growth in mice

... endothelialgrowth factor (VEGF), a substance that stimulates new blood vessels to grow totry to compensate. However, the back-up blood vessels generally are faulty;they leak, bleed and encourage scar tissue that detaches the retina, resultingin severe loss of vision. In macular degeneration, abnormal blood v...

UF researchers explore gene therapy to treat obesity

...uropeptide Y, a chemical that UF researchers found stimulates appetite, said Satya Kalra, a professor of neuroscience in UF'sCollege of Medicine. This process is thought to be faulty in most obese peopleso that even high levels of leptin fail to turn off the hunger signal. "The concept is that if you ca...

Growth hormone involved in diabetic kidney disease, study finds

...lopment by altering chemical activity in cells. It stimulates theproduction of protein in muscle cells and the release of energy from thebreakdown of fats. Kopchick led the team of researchers working on this project, which ispart of a larger study under way in the university's Edison BiotechnologyInsti...

UI researchers begin to unravel the underlying mechanism of migraines

...itonin gene-related peptides (CGRP). The CGRP then stimulates the release ofadditional inflammatory agents. This feedback loop results in continuedsecretion of CGRP and persistent pain for the person suffering the migraine. "We are very interested in understanding the steps involved in controlling howCGRP is ma...

Breast cancer cells shown to migrate toward hormone source - novel mechanism for metastasis seen

...ng as a chemical attractant, the hormone prolactin stimulates thecoordinated movement of breast cancer cells in ...the Penn team's, have indicated that prolactinalso stimulates the progression of breast cancer, although precise details ofits action have been elusive. The curre...

Gene treatment can boost heart function in rabbits, Duke researchers say

...;ARs would respond to the drugisoproteronol, which stimulates ßARs. When researchers injected the drug intoboth normal rabbits and rabbits with the additional ßARs, they found the rabbithearts with the additional ßARs responded to the drug even more so than thenormal rabbits. "Our resu...

Protein studies reveal sophisticated control of nerve communication

...tors. Whenever the anchor protein releases it, PKA stimulates thechannels to allow in more calcium ions. Yotiao's other closely held enzyme, called type 1 protein phosphatase (PP1),has the opposite effect: it downregulates NMDA receptors, or slows the flow ofions. Steven Tavalin, an HHMI associate in Scott's l...

The lie of the tiger

...boratory, we can create a'pure stimulus' that only stimulates one particular motion system. By studyinga 'pure stimulus', like an isolated atom, we can reveal the secrets of the humanbrain." According to Lu, the methodology and results from this study will provide abasis for a broad class of neurophysiological...

Eating proper foods at right time after exercise can speed recovery

...aid Donald K. Layman, a professorof nutrition. "It stimulates muscle protein synthesis, provides fuel for themus...alth funded the research. "It appears that leucine stimulates a signaling pathway somewhat like thehormone insulin," Layman said. "It has beendebated whether the ...

Mechanical forces found to exert larger role in blood vessel health and disease

...rce exerted by blood flow, and a growth factorthat stimulates the production of new blood vessels. The Penn Stat...found that shear stress from transmural fluid flow stimulates thecontraction of smooth muscle cells, which lie deep within the vessel wall. Thismay, in turn, cont...

New gene therapy found safe for treating coronary heart disease

...ogetherthey developed a way to deliver a gene that stimulates blood vessel growth -- thevascular endothelial growth factor (VEGF) gene -- to heart cells. The gene isactive during fetal development and then essentially turns off in the heart. Theresearchers used an adenovirus, a cause of the common cold, to del...

Narcolepsy gene identified

...nhopes of learning more about a brain hormone that stimulates appetite got a bitof a surprise when they saw that the rodents would suddenly collapse and fallfast asleep with no provocation. As a result, Howard Hughes Medical Instituteinvestigator <AHREF="http://www.hhmi.org/science/cellbio/yanagisawa.htm"&#...

UT Southwestern researchers create mice with narcolepsy

...obegin an intercellular communication process that stimulates food consumption.The work that led to the narcoleptic mice was a continuation of the orexinresearch. "During the course of our work, we decided that it was best to study themice at night, which is when they are most active," said Yanagisawa, ...

Scientists find genetic links for deadly type of breast cancer

...nd Merajver believe it is anoncogene---a gene that stimulates runaway growth in cancer cells. The most surprising result of the study, according to van Golen, was that theloss of LIBC and the overexpression of RhoC occurred together in 91 percent ofthe inflammatory breast cancer tumors, but in none of the non-i...

Genetic variants linked to higher risk of high blood pressure in African Americans

...causes thearteries to constrict. Angiotensin also stimulates TGF-beta 1 production. Co-authors with August are Baougui Li, Ph.D.; Ruching Ding, M.D.; Vijay K.Sharma, Ph.D.; J. O. Song, M.D.; and Geraldine Helseth, R.N. Co-authors with Parmer are Qing Song, Ph.D.; Mala T. Kailasam, M.M.D.; Daniel T.O'Connor, M....

OHSU scientists locate 'fat thermostat' in brain

...he pathways to the adipostat, called the NPY/AGRP, stimulates feeding.The other pathway, called the MSH, inhibits feeding and is involved in thenormal maintenance of metabolic rates. Cone and Colmers used miniatureelectrodes to identify for the first time neurons that could process informationfrom both pathways...

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