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Tag: "internal" at biology news

Man's best friend: Study shows lonely seniors prefer playtime with pooch over human interaction

...M.D., professor of geriatrics in the department of internal medicine and professor of pharmacological and physiological sciences at Saint Louis University School of Medicine. Nursing home residents felt much less lonely after spending time alone with a dog than they did when they visited with a dog and other...

New Research Shows Artificial Light at Night Stimulates Breast Cancer Growth in Laboratory Mice

...trong influence on the body’s circadian rhythm, an internal biological clock that regulates sleep ?wake cycle,... with cancer in humans, and that interference with internal timekeeping can tip the balance in favor of tumor development,?said Blask. “The effects we are seei...

Hopkins researchers discover genetic switch that turns off an oxygen-poor cell's combustion engine

...s. Like the hybrid car, cells use oxygen and the internal combustion engine at higher speeds and rely on an...mitochondrion, when oxygen is ample. But like the internal combustion engine, this process generates pollutants or toxic oxygen molecules. At lower oxygen l...

Dogs keep dying: Many owners unaware of toxic dog food

...affected dogs suffer from intractable vomiting and internal bleeding. "Despite our understanding of this complex toxin, we have no direct antidote for this poisoning. This has been an immensely sad holiday and one that will leave an indelible mark on the owners that lost their cherished family members." Of t...

Retinol for combating leukemia cells

...is but, of course, not all cells have to die. Both internal and external stimuli are what initiate this mechanism in those cases where it is necessary. Various modulating substances are involved amongst which are the retinoids. Boosting apoptosis Amongst these retinoids, researchers from the University of...

Gut protein found to protect against infection and intestinal breakdown

...iology; John Shelton, senior research scientist in internal medicine; Dr. James Richardson, professor of pathology; Dr. Joyce Repa, assistant professor of physiology; and Dr. David Mangelsdorf, professor of pharmacology and biochemistry and an HHMI investigator. Drs. Ruth Yu and Michael Downes of the Salk Ins...

Nearly half of people who need cholesterol treatment don't get it

...id Goff, a professor of public health sciences and internal medicine at Wake Forest's School of Medicine, part of Wake Forest University Baptist Medical Center. "Our research illustrates the importance of improving the treatment and control of cholesterol disorders and eliminating treatment disparities." The...

Worm hormone discovery may aid fight against parasitic disease

...ate; Dr. Kamalesh Sharma, a postdoctoral fellow in internal medicine; Tingting Li, student research assistant ... and Dr. Richard J. Auchus, associate professor of internal medicine. Other authors were from Baylor College of Medicine and the Van Andel Research Institute in...

Molecular mechanism may explain how fevers spark seizures

... get sick and have fevers. Usually, those elevated internal temperatures cause only temporary discomfort, but in some small children they spark convulsions called "febrile seizures." These convulsions are "scary and very upsetting to parents," said Robert L. Macdonald, M.D., Ph.D., professor and chair of Ne...

The giant protein titin helps build muscles

...adds: "We discovered that telethonin has a kind of internal symmetry that lets it grasp two titin molecules running off in opposite directions. That's new. We've discovered other single proteins that can link to DNA molecules in 'palindromes', but this is the first time we have seen proteins themselves linked...

Removing DNA repair gene causes metabolic syndrome

..., elevated levels of fat cell byproducts, and many internal organs almost entirely encased in thick pads of fatty tissue. The results are the first to link DNA repair with the metabolic syndrome, and they suggest an important role for the NEIL1 gene product in the prevention of the diseases associated with t...

Thin tough skin, slow-growing gills protect larval Antarctic fish

...eeze proteins to lower the freezing point of their internal fluids," said lead author Paul A. Cziko, a researc...ent freezing," Cheng said. "At -2 degrees Celsius, internal fluids would freeze instantly and the baby fish would die." "This 0.7 of a degree Celsius is small ...

Alternatives to the use of nitrate as a fertiliser

...r to assimilate the ammonium without modifying its internal processes. In another part of the study the nature of the stress produced in plants by the use of ammoniacal fertilisers is investigated. The high concentration of ammonium does not carry oxidative stress with it (i.e. the molecules are oxidised due...

Forsyth scientists gain greater understanding of how embryos differentiate left from right

...gents allowing an embryo to correctly position its internal organs along the left-right axis. Instead, their research showed a single asymmetry mechanism linking ciliary, serotonergic (serotonin is the chemical substance involved in transmitting signals between neurons), and ion flow mechanisms. The data was...

Wisconsin scientists find a way to make human collagen in the lab

...s sheets of tissue that support the skin and every internal organ. There is nothing in the body, in fact, that does not depend in some way on collagen. In medicine, collagen from animals, principally cows, is used to rebuild tissue destroyed by burns and wounds. Commonly, it is employed in plastic surgery to...

Front-line immune cells mature in four stages, study shows

...ght now," says Caligiuri, who is also professor of internal medicine, of molecular virology, immunology and medical genetics and of veterinary biosciences. "The findings will also boost NK-cell research," says first author Aharon G. Freud, a physician who is a doctoral student in Caligiuri's laboratory. "Th...

Study finds evolution doesn't always favor bigger animals

... cold-blooded creatures that do not regulate their internal body temperatures, such as mollusks to turtles, also follow this rule. "It is a bit of a puzzle why Bergmann's Rule holds in cold-blooded animals like ostracodes," said Hunt. Hunt and Roy found that as ocean temperatures declined by some 10 degre...

In the mind's eye: How the brain makes a whole out of parts

...agments. In a sense, the brain has to construct an internal representation of an object from disparate pieces." In the long term, understanding exactly how the brain processes information may lead to neural prostheses ?artificial replacements for lost sensory, motor and perhaps even memory and cognitive func...

Clock molecule's sensitivity to lithium sheds light on bipolar disorder

...ey receptor protein is a critical component of the internal molecular clock in mammals. What's more, this mole...week's issue of Science. "We're interested in the internal control of metabolism because feeding behavior is on a daily cycle, and hormonal activities that reg...

Manipulating single cell receptor alters animal behavior

... angiotensin, a polypeptide hormone that regulates internal equilibrium among body fluids. By using drugs to effect these neural signaling pathways in animal subjects, the team was able manipulate this equilibrium, a finding that Daniels says provides a better understanding of the regulation of blood press...

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