Tag: "body" at biology news

Duke Researchers Discover Central Role Of Nitric Oxide In Hemoglobin Action

...ions than NO. Not many SNOs have been found in the body to date, butthe ones that have been discovered are...rteries through the heart and into the rest of the body todeliver its load of oxygen. That process has to happen with open vesselsand in a constant pressure...

New Cancer Switch Discovered By Duke Medical Center Pharmacologists

... -- A new way that cancers may be triggered in the body -- through damage to a molecular "safety key" that normally holds cell growth in check -- has been reported by Duke University Medical Center pharmacologists. The discovery, reported in the Nov. 1 issue of Genes & Development, is one of three differe...

Duke Researchers Discover Candidate Susceptibility Gene For Autoimmune Disease

..." Blackshearsaid. "We were studying factors in the body that are influenced byinsulin, which regulates sugar levels in the bloodstream, and instead, discovereda gene that appears to regulate the inflammatory response." Working with Duke University Arthritis Center researchers Dr. Bart Haynesand Dr. Dha...

Mutate Or Die: New Polymerase Gives Desperate Yeast An Option

...age,the repair system is just overwhelmed, and the body tries other ways to cope. This zeta polymerase is one such last-ditch effort."...

Suicidal Tendencies

NEW YORK, N.Y., June 20 -- Is the body made of minature samurais? In theJuly/August issue of The Sciences magazine Martin C. Raff, a biologist fromUniversity College, London, reports on his research, saying that virtually allcells are programmed to commit hari-kiri if their neighbors do n...

Water Recycling Project Tested in Turkey Plant

...sses at the plants. Chill water quickly lowers the body temperatureof processed turkeys, so quickly that microorganisms have limited opportunitiesto grow. One gallon of water is required to process each turkey going through thechill water processing. With turkeys going through the process all day longand...

Nitric Oxide May Hold Key To First Treatment For Deadly Form Of Malaria, Duke Scientists Report

...rsaid. "This study shows why. NO influences myriad body functions becauseNO is a universal signal." The body keeps NO, which is toxic in excess, in balance by sensing how muchNO is present and turning genes on...

Hibernation: The Opposite of Sleep?

...e. During hibernation a ground squirrel lowers its body temperature below freezing and stays that way for ...osts more than 80 percent of the squirrel's stored body fat, has stumped scientists for more than acentury. If hibernation is about conserving energy, why d...

Low-Protein Diet May Reverse Kidney Disease

...no acids -- building blocks of protein -- that the body can not make. Ketoacids are slightly modified forms of amino acids. The disorder gradually disappeared during the next three to 15 months in five participants, who started the study before kidney failure became severe, the results show. Four of the f...

Nitric Oxide Found To Control Cells By Turning On Genes; Suggests New Role In Health And Disease

...rsaid. "This study shows why. NO influences myriad body functions becauseNO is a universal signal." The body keeps NO, which is toxic in excess, in balance by sensing how muchNO is present and turning genes on...

Duke Primate Center Sets October Expedition To Find 'Juliet'

...d, survived andprospered, because as an infant his body required more calcium, and he didnot suffer from hypercalcemia. Calcium-rich foods are now excluded fromRomeo's diet, and the Duke primatologists believe that they have developedenough information about the sifaka's low-calcium diet of leaves to brin...

Discovery Of Cell Sites May Shed Light On How Bodily Systems Interact

...crophages, which arecells scattered throughout the body that ingest foreign cells. The bacteriumcauses the macrophages to produce IL-1, a message-carrying polypeptide withfever-inducing properties. It had been assumed, Kelley said, that the messageof IL-1 was received in the hypothalamus, where response o...

Gene Discovery Could Overcome Aluminum Barrier To Higher Wheat Yields Worldwide

...reserved as pickles, retain beta carotene that the body converts to vitamin A. Vitamin A is necessary for normal vision, bone growth and tooth development. Cucumbers grow well in hot, humid climates of developing countries where many children suffer vitamin A deficiencies. [Contact: Phillip W. Simon, V...

Medicinal Leech May Offer Clues To Neural Regeneration

... nerve cell that carry impulses away from the cell body toward a target cell. "We are now conducting follo...lecule that sends chemical messages throughout the body to incite certain chemical reactions. Because the NOS found in leeches is very much like the human N...

Siblicide In Nature: Study Of Galapagos Seabird Finds Death Can Ensure Species Survival

...e first-born bird drops below 75 percent of normal body weight. Blue-footed booby chicks were put in masked booby nests and vice versa, to determine whether parents, or offspring, or both, controlled the siblicide. In masked booby chicks raised by blue-footed booby parents, siblicide happened in 80 perc...

Scientists Identify Gene For Sexual Behavior In Male Flies

...learn how genes instruct the building of the fly's body and the functionof its cells, and insights from that work have already helped explainhow the human body develops. "In any complex organism, brain formation and function must becontrolled in part by genes...

Selenium Supplements Can Reduce Cancer Rates

...least two essential enzymes, selenium provides the body with antioxidant protection in concert with vitamin E and is required for normal thyroid hormone metabolism. The study was funded in part by grants from the American Institute of Cancer Research, the American Cancer Society and the National Institute...

Team Identifies Switch For Tumor Suppressor Gene

...own as de-phosphorylation, a common process in the body where a proteinknown as a phosphatase strips phosphate groups off a protein. Thestripped-down version of the RB protein suppresses growth byknocking out proteins that a cell needs to proliferate. When theRB protein is decorated with phosphate groups,...

High Levels of Vitamin C Prove Toxic to HIV

...rus, he added. Vitamin C is essential to the human body and is necessary for normal function of the immune system. The researchers studied vitamin C uptake and its effects on AIDS-virus production inHIV-infected and healthy immune cells, after finding in previous studies that cancer cells also take in ...

Malnutrition Impacts Longevity Of Females More Than Males And Shows Gender Differences In Fruit Flies

...n nutrient reserves that normallywould be used for body maintenance and repair. That notion is supportedby the fact that the early-life surge in the death rate is not seen in sterileprotein-deprived females. "It's likely that this is a particularly vulnerable window of timefor females because of the nutr...

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