Tag: "rats" at biology news

Scientist says recent UNC research suggests better nerve agent treatment

...the University of North Carolina at Chapel Hill in rats suggests that a promising new treatment for nerve ...e nerve agent-like cholinesterase inhibitor DFP on rats body temperature, activity and bowel excretion. That had never been demonstrated before. "Specifical...

New study clarifies connection of brain and heart failure

...rom central neurons and from sympathetic nerves in rats with a large MI produced by ligation of the left a... features of heart failure that were present in MI rats with sham AV3V lesion, increased sodium appetite, the decreased sodium and water excretion, and augm...

Common Indian spice pigment can prevent onset of alcoholic liver disease, study finds

...ogical Society (APS). Methodology Four groups of rats (six in each group) were treated by intragastric i...yrosine. Results In each of the four groups, the rats increased their weight at a constant rate. Moreover, there was no difference in weight gain among th...

Why does caffeine delay exercise-induced fatigue?

... study. After the first two weeks of acclimation, rats assigned to the intracerebroventricular group were...es. After seven days of recovery from surgery, the rats were again acclimated to treadmill running for another one to two weeks, until they were able to run...

Rockefeller, Weill Cornell researchers find link between estrogen, brain structure changes

... a dramatic decrease in dendritic spine density in rats whose ovaries were removed and thus were relatively low in blood estrogen levels; however, administering estrogen to the animals increased their spine formation. McEwen and his colleagues also found that the density of synapses and synaptic spines fl...

Chemical in soy alters reproductive organs in male rats

...Bloomberg School of Public Health report that male rats whose mothers were fed diets containing genistein,...l issue of the Journal of Urology, pregnant female rats were randomly assigned to one of three regimens: a genistein-free diet, a diet supplemented with a l...

The elusive preeclampsia factor discovered?

...a, the scientiststreated pregnant and non-pregnant rats with this protein. Irrespective ofpregnancy, the exposed rats exhibited several of the hallmark clinical andpathological features of preeclampsia, providing a str...

BIDMC researchers identify source of preeclampsia

...ered the protein to both pregnant and non-pregnant rats to test whether sFlt1 was at the root of the probl...esulting data was exciting," says Karumanchi. "The rats that were exposed to sFlt1 had distinct clinical and pathological symptoms of preeclampsia, demonstr...

Tapeworm's chemical trick could make drugs more effective

... tapeworm Hymenolepis diminuta, a species found in rats and long used as a research model by parasitologists. By sorting through the soup of biochemicals the tapeworm uses to influence muscle activity in the gut, a group led by John Oaks of the School of Veterinary Medicine, and Paul Bass of the School of...

Genetics, genes and intelligence

...patients. The authors administered EGF to neonatal rats to transiently perturb endogenous EGF receptor sig...mality. During and after development, however, the rats began to display various behavioral abnormalities. Abnormal sensorimotor gating was apparent, as mea...

Innovative research with pythons offers new insights into the body's digestive processes

...eder and maintained on biweekly diet of laboratory rats and water. Key stages of the experiment included: Tests for luminal nutrient signal: Inserting a rubber catheter in the small intestines of 21 pythons followed by a solution allowed post-mortem examination of the organ's mass, morphology, and nu...

New study sheds light on the responses to diuretics

... Society (APS). Methodology Male Sprague-Dawley rats weighing 170-230 g were placed in metabolism cages...to the beginning of the study. Control and treated rats were designated randomly, and all were provided with a daily, fixed amount of finely ground regular ...

Polymers promote nerve regeneration

...lm. Though initially unable to use their legs, the rats started to regain use of their legs after three weeks and were able to function normally after six weeks. Although the technique has shown great promise with PNS cell growth, getting similar results with the central nervous system, which includes th...

Fasting forestalls Huntington's disease in mice

...Dr. Mattson found that reducing the food intake of rats and mice by maintaining them on low-calorie diets ...estigators have consistently found that laboratory rats and mice live up to 40 percent longer than usual when fed a diet that has at least 30 percent fewer ...

Common pediatric anesthesia drugs cause brain damage and learning and memory problems in infant rats

... located. The investigators anesthetized 7-day-old rats with a combination of three drugs -- midazolam, ni...e important in learning and memory. "These infant rats were anesthetized during the brain growth spurt period called synaptogenesis, which lasts for the fi...

Researchers unwind secrets of biological clocks

...leagues also study the biological clocks of birds, rats and fungi, but it was the bacterium known as Synechococcus elongatus that yielded the latest revelation: the first structural model of part of the clockworks. The researchers used magnetic-resonance imaging to limn the structure of one of the prote...

Female hormones found to protect against harmful effects of fructose

...to whether elevated blood pressure found in female rats was related to impairments in insulin sensitivity,...rbohydrate (fructose) diet in both male and female rats on the development of hyperinsulinemia, insulin resistance, and hypertension. They also examined th...

Alcohol's effects on testosterone

...nt results in the way two different groups of male rats form testosterone after acute administration of al...tex and threefold in the plasma of the un-operated rats 30 minutes after alcohol administration. ADX/GDX rats had testosterone concentrations that were onl...

MIT sugars research affecting bypass patients, drug industry

...roperties, or activity profiles. They show that in rats the new formulations are much more potent and hence effective than conventional forms of the drug. The new LMWH formulations can also be rapidly neutralized in the body, unlike their LMWH predecessors, opening up additional applications. "The abilit...

UF study: Calorie restriction reduces age-related brain cell death

...th age were significantly reduced in the brains of rats whose calories were limited. More important, they...n against neuron death were twice as high in older rats whose calories were restricted by 40 percent. The findings could have significant implications not o...

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