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Tag: "supply" at biology news

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

... lots of hydrogen in the hot springs -- an endless supply forbacteria," he said. Measurements of the amount of H2 in water wererecorded in Yellowstone hot springs, streams and geothermal vents indifferent parts of the park and during different seasons. All of theenvironments had concentrations appropriate f...

Mouse brain tumors mimic those in human genetic disorder

...F1 brain tumors may involve agents that preventthe supply of growth promoting factors provided by new blood vesselsand microglia."Next, the researchers used the mouse model to investigate a clinicalconcern. Physicians rely on several tests to determine whether a childwith an optic pathway glioma should unde...

A bacterial genome reveals new targets to combat infectious disease

...cofactors, and probably depends on the nematode to supply them. One discovery of possible significance is the presence in the bacterium of the synthetic pathway for heme - the oxygen-carrying iron component of hemoglobin. The nematode may require heme for synthesis of developmental hormones, so Wolbachia's...

Spider Venom Could Yield Eco-Friendly Insecticides

...toxins that currently end up in the food and water supply pose a serious threat to animals, fish, and birds," says King, a research scientist at the University of Connecticut Health Center. Using nuclear magnetic resonance (NMR) spectroscopy, King and his colleagues have determined the three-dimensional st...

Scientists discover the cellular roots of graying hair

...de, seemsto play a crucial role in maintaining the supply of stem cells withinthe hair follicle, and graying is the result of “incomplete maintenanceof melanocyte stem cells.?The research was supported by the National Institutes of Health, andNishimura received funding from The Shiseido Award in 2002 and Th...

Fundamental Finding Yields Insight into Stem Cells, Cancer; Opens Door to Drug Discovery

...de, seemsto play a crucial role in maintaining the supply of stem cells withinthe hair follicle, and graying is the result of “incomplete maintenanceof melanocyte stem cells.?The research was supported by the National Institutes of Health, andNishimura received funding from The Shiseido Award in 2002 and Th...

Weizmann Institute scientists develop a new approach for directing treatment to metastasized prostate cancer in the bones.

...de, seemsto play a crucial role in maintaining the supply of stem cells withinthe hair follicle, and graying is the result of “incomplete maintenanceof melanocyte stem cells.?The research was supported by the National Institutes of Health, andNishimura received funding from The Shiseido Award in 2002 and Th...

Placenta Is A Rich Source Of Blood Stem Cells

...in mice revealed that the placenta harbors a large supply of hematopoietic (blood-forming) stem cells. These cells, which appear very early in development, are able to generate more blood stem cells and can give rise to a complete blood system when transplanted into an adult. Unlike other sites where blood ...

Gene Therapy For Parkinson's Disease Moves Forward In Animals

...ment, enables the brain to replenish its dwindling supply of dopamine, sidetracking the destructive course of Parkinson's disease. But eventually the treatment can backfire. “Levodopa generally works great for several years, but then it actually starts creating movement problems,?Mandel said. “Our idea is ...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

...tissues. "Even in our own case, our bodies have to supply oxygen to our tissues, but they must also keep out excess oxygen to prevent oxidative damage to the tissues. This damage is closely related to aging. Hence, perhaps, the many anti-oxidative creams flooding the market to combat aging. The concentratio...

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

...to cluster around the nucleus and work together to supply energy to the healthy, functioning cell. In contrast, the mitochondria in the cancer cell sit all over, isolated and balled up in a quiescent, non-functioning state. Apparently, the rapidly growing cancer cells derive energy from an alternative sourc...

NJIT Presidential Award winner takes stem cell research another step

... would visit a doctor and be injected with a ready supply of 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 would begin to heal. Arinzeh's drive to advance the science of stem cell research has ...

Gene therapy for Parkinson's disease moves forward in animals

...ment, enables the brain to replenish its dwindling supply of dopamine, sidetracking the destructive course of Parkinson's disease. But eventually the treatment can backfire. "Levodopa generally works great for several years, but then it actually starts creating movement problems," Mandel said. "Our idea is...

Special Imaging Study Shows Failing Hearts Are 'Energy Starved'

...vide direct molecular-level measurements of the CK supply in normal, stressed and failing human hearts. Oth...owed that CK flux in healthy hearts is adequate to supply energy to the heart over a fairly wide normal range of rest and stress conditions. However, in pat...

Scientists discuss improved biopesticides for locust control in West Africa

... several countries, causing severe income and food supply loss. Larry Vaughan, associate program director of the USAID-funded Integrated Pest Management Collaborative Research Support Program (IPM CRSP) and research associate in the Office of International Research, Education, and Development (OIRED), and ...

Drug-resistant bacteria on poultry products differ by brand

...fluoroquinolone-resistance may persist in the food supply for a substantial period of time even after antibiotic use is discontinued," said Price. "Assuming that what we are observing are lingering resistant strains rather than the result of continued drug use, then one has to conclude that fluoroquinolone ...

Researchers devise way to mass-produce embryonic stem cells

...iment. "There's more of a demand for an unlimited supply of embryonic stem cells," Yang said. Also, embryonic stem cells are pluripotent ?they can become any kind of cell in the body, while adult stem cells usually develop into a type of cell based on the kind of tissue that they originated from. The bior...

Discovery Promises Simpler Therapy for Sickle Cell Disease

...c, blood transfusions replenish the red blood cell supply in the body. The team further found that differences among patients in their ability to process nitric oxide in the blood correspond to the severity of their disease symptoms. That result might explain a long-standing puzzle: patients with sickle ce...

Microbial fuel cell: High yield hydrogen source and wastewater cleaner

...nnecting the positive pole of a programmable power supply to the anode and the negative pole to the cathode. The researchers call their hydrogen-producing MFC a BioElectrochemically-Assisted Microbial Reactor or BEAMR. The BEAMR not only produces hydrogen but simultaneously cleans the wastewater used as it...

Buying Time Through Hibernation on Demand

...d prevent injury and death from insufficient blood supply to organs and tissues. "We are, in essence, temporarily converting mice from warm-blooded to cold-blooded creatures, which is exactly the same thing that happens naturally when mammals hibernate," said lead investigator Mark Roth, Ph.D., whose findi...

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