Tag: "rats" at biology news
Adolescent rodents experience milder hangover effects than do adult rodents
..."play fighting." "We already know that adolescent rats
are more resistant to the motor-impairing, sedat...hdrawal from chronic alcohol. However, adolescent rats
not only did not exhibit a hangover-related suppression in social interactions, but they actually sh...
Rodents bred for alcohol preference live longer than rats bred for alcohol avoidance
...onsumption on survival. A new study has found that rats
bred to prefer alcohol are healthier and live longer than rats
bred to avoid alcohol, whether they drink alcohol or not Study authors ponder the implications of th...
Keck Foundation grant launches interdisciplinary brain research at Illinois
...itially focusing on those found in giant mollusks, rats
and mice, with the ultimate goal of identifying natural chemical signatures to restore proper wiring and functioning in malfunctioning brains....
Vegetables that prevent may ultimately cure some cancers
...culture, Safe said. Limited trials on lab mice and rats
have produced the similar results, he noted. Safe said the research began by considering compounds that protect a person from developing cancer. Journal articles of other researchers are stacked on Safe's expansive desk, extolling the scientific ev...
Growing human organs on the farm
...shown to be especially good at repairing hearts in rats
or mice, but there is one big obstacle: at the moment the only source of human fetal heart cells is human fetuses. Robert Kloner, a heart expert at the University of Southern California in Los Angeles, says an approach like Zanjani's would get aroun...
Alcohol exposure in pre- and early post-natal stages may cause insulin resistance
...elow: Animals : Timed-pregnant Sprague-Dawley rats
were used (n=3-4/group) and randomly divided into ...ed intravenous glucose tolerance test (IVGTT). The rats
were later killed and incremental areas under the glucose (AUG) and insulin (AUI) curves were calcul...
Researchers identify key player in respiratory memory
... uncover these mechanisms, the researchers exposed rats
to three five-minute intervals of hypoxia, or decr..., they analyzed segments of spinal cord taken from rats
after they had been exposed for 60 minutes to either normal or decreased amounts of oxygen. The rese...
Estrogen promotes gender differences in brain's response to stress
...effects of stress on PFC function, male and female rats
were exposed to different levels of mild stress, a...he female rats' estrus cycles, they found that the rats
showed this sensitivity only when they were in a high-estrogen phase. To further investigate the ro...
Link between alcohol consumption and muscle damage in females
...s in c-myc mRNA levels also occur in the muscle of rats
chronically exposed to alcohol, (2) muscle of female rats
is more sensitive than muscle in their male counterparts, (3) raising acetaldehyde also increases c-...
Aging: The continuous process from birth to death
... by aging, using the isolated cerebral arteries of rats
for investigation. The conclusions of the research.... Utilizing immobilized hindlimbs of young and old rats
to cause atrophy, then assessing age-related variation in gene expression, they found that while ske...
Brain study shows some animals crave exercise
...ain regions that become activated when you prevent rats
from getting their daily fix of cocaine, morphine, alcohol or nicotine." The researchers explain that blocking the running behavior in the mice bred to do more voluntary wheel spinning triggers a neuronal response - activation of brain regions involv...
Cell death promotes learning growth
...rrelated with performance in the water-maze. Thus, rats
with the lowest cell death were less able to acquire and use spatial information than those with the highest cell death. Conclusion . The results reveal a complex modulation of learning on brain plasticity, which induces death and proliferation of ...
Naked mole-rats bare pain relief clues
...ds pain signals to the central nervous system. The rats
feel no immediate pain when cut, scraped or subjec...t stimuli. They only feel some aches. But when the rats
get a shot of Substance P, pain signaling resumes working as in other mammals. "It was a complete s...
A sweet tooth may be a 'marker' for the genetic risk for developing alcoholism
...arch has established that in mammals such as mice, rats
and monkeys, the preference for and consumption of sweet fluids are strongly correlated with voluntary alcohol intake," said Alexei B. Kampov-Polevoy, assistant professor of psychiatry at Mt. Sinai School of Medicine and first author of the study. "...
Nicotine exposure in aging hearts
...ties that often accompany growing old. Twelve male rats
consisting of six young (2-3 mo old) and six old (...e young compared with the old rats. AT in young rats
: At baseline, no AT could be induced in the young rats. During nicotine perfusion at 10-30 ng/ml, b...
Dying nerves cause even more harm after spinal cord injury
NEW ORLEANS A new study in rats
has found that after severe spinal cord injury, mo...he effects of secondary injury. A group of control rats
was injected with albumin, an innocuous protein, to make sure the injection itself hadn't caused the...
Study finds new mothers are resistant to stress
...aduate student Benedetta Leuner, found that female rats
during the postpartum period are less anxious and .... "Our results demonstrated that postpartum female rats
show very different and unique responses to stress compared to females without reproductive and mate...
New technique helps shed light on progression of dementia
...ology at Ohio State. The researchers injected into rats
tiny microspheres small beads that block blood fl...ospheres into the carotid arteries of one group of rats
and a salt-water solution into the arteries of rats
in a control group. Sarter and his colleagues us...
Diet may improve cognition, slow aging, and help protect against cosmic radiation
...n this damage." For the current study, Goyarzu fed rats
a blueberry-enriched diet. NF-kappaB levels were t...riatum, basal forebrain, and cerebellum). The aged rats
on the blueberry-enriched diet had lower NF-kappaB levels than aged rats
fed a control data. Young c...
Dietary supplement many not lower prostate cancer risk
...esearch Institute and their colleagues showed that rats
with prostate cancer survived longer when fed a di...s. Clinton and his colleagues first separated 194 rats
with prostate cancer into three groups. A control group was fed a balanced diet containing no detect...
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