Tag: "brains" at medical news

Postmature Infants Not As Easily Calmed As Other Newborns

...tic, opiate-like endorphins in theirsystems. Their brains may produce endorphins, the body's naturalpain killers, to cope with the stresses associated with remainingtoo long in the uterus, Smith said. Researchers are conducting follow-up studies to determine whetherthe postmature infants do, in fact, have e...

Researchers Gain Insights Into Drugs Used For Manic-Depression

...lates glutamate release and IP3 accumulationin the brains of mice. They also saw that each drug triggers glutamaterelease by different mechanisms, producing an additive, enhanced effect. "This additive effect may explain the clinical observation that insome patients the use of the two drugs togethe...

Psychiatric Symptoms May Signal Brain Damage From Diet Pills

...pleted in humans." In one study reviewed, monkeys' brains continued to show signs of damage 17 months after ...es show that they do in rodents. And since human brains are more like those of monkeys, any such damage in humans would also likely be permanent, according ...

Is Ritalin As Effective--And As Harmless--As It Could Be?

...y (PET) to compare the enantiomers' effects in the brains ofbaboons and humans. (Radiotracers emit signals as they decay that can becollected by a PET scan to generate images.) The study showed that the d-threoenantiomer bound precisely to the dopamine targets in the brain, while thebinding of l-threo was m...

New Research In Battling Alzheimer's Impact On Memory

... responsible for the destruction of neurons in the brains of Alzheimer'spatients. According to Michael G. Zagorski, Ph.D., this information could beused to design drugs that might prevent either this initial step or itscontinuation into Alzheimer's disease. A sequence of 40 to 42 amino acids, aso-called b...

UB Plants "Seeds" By Investing In Research Projects; Researchers Leverage Investment 14 Times Over

...velop an understanding of what is occurring in the brains of affected children in order to find new ways to treat the disorder.Original UB investment: $19,600 o A $728,000 grant to Shelly Lane, formerly assistant professor of occupational therapy, and Susan Mistrett, education coordinator in the Center for...

Health Risk To "Cigarette Babies" Is Neglected, Duke Scientist Charges

...ils of the mechanisms by which nicotinedamages the brains of the fetal rats. The experiments show that nicotine mimicsa key brain neurotransmitter chemical, acetylcholine, which is normally releasedin a precise sequence of signals that tell the sensitive growing brain cells howto "wire" their connections. H...

A Concentration Killer: Study Shows Brain Chemistry Defect Is Key To Attention Deficit Hyperactivity Disorder In Adults

... In the study, the researchers analyzed the brains of 17 ADHD adults withpositron emission tomography (PET). The PET images, which highlighted theactivity of the dopamine-producing enzyme, DOPA decarboxylase, indicate that anabnormality in dopamine production occurs in only one of the dopamine-rich...

Epilepsy Drug Found To Stop Cocaine's Effects In Animals

...vinyl-GABA, or GVG, blockedcocaine's effect in the brains of primates, including the process that causes a'high' feeling in humans. GVG also significantly decreased the amount of time that rodents spentin areas where they had previously received cocaine. Such behavior is importantin human drug add...

Tiny Pellets Could Deliver Alzheimer's Drugs

...to 10 milligrams of NGF, that when embedded in rat brains has been "very effective" at regenerating dying cells. Cornell polymer chemist Nadya Belcheva has taken the same idea, but reduced it to the microscopic level by coating individual molecules of NGF with a polymer. These microspheres might one day be...

Novel Imaging Agent Developed By Penn Researchers Provides Insight Into Brain's Message Delivery System

...s has been found in postmortem examinations of the brains ofParkinson's and Alzheimer's patients. Thus, measurement of the dopamine transporter with Trodat could be a usefulindicator of dopamine neural loss. With advanced radiologic imaging technology,such as single positron emission tomography (SPET) -- w...

Alzheimers Disease Could Soon Be Treated With Nose Drops

...th the idea of using nosedrops to carry NGF to the brains of his patients. "I knew that bad things couldget in this way," he says. "It occurred to me that maybe good things could getin this way too." Olfactory nerves are unusual in that they run straight from theolfactory bulb in the brain to the na...

How Ritalin Enhances Memory: Clues Provided By Brain Scans of ADHD Patients Using The Drug

...nctional in the ADHD patients - that areas oftheir brains were over active in some areas and underactive in others during thetask. Task-related neural activity among men with ADHD was not noted in thefrontal region, an area traditionally associated withworking memory, as it was in the normal control subjec...

Physicians Study Whether "Super-Aspirin" Prevents Alzheimer's

... others have discovered that cox-2 is activein the brains of people who have the disease. Though the precisecause of Alzheimer's disease is still a mystery, scientistsbelieve the enzyme plays some role in the sickness and death ofbrain cells of patients. Since cox-2 inhibitors muck up theenzyme's activity, ...

Differences In Brain Function Found For Attention Deficit Disorder

...nly used to treat ADD, hasdifferent effects on the brains of people with and without ADD, and where thosedifferences occur in the brain. The findings are reported in the Nov. 24 issueof the Proceedings of the National Academy of Sciences. The study is also the first to use functional magnetic resonance imag...

Now Is Time To Design Brain-Saving Drugs Specifically For Children, UCSF Neurologist Says

...nections and others are pared away.When children's brains are damaged by a disease or an accident, the effec...s one of many projects focussing on protecting the brains ofnewborn babies. Researchers in her lab study oxygen deprivation from severalangles, ranging from g...

Radically New Type Of Surgery Tested On First Patient

...ilities may include implanting electrodes into the brains ofpatients with movement disorders, repair of aneurysms and other blood vesselabnormalities, delivering therapeutic drugs or chemotherapy agents to parts ofthe brain, cardiac electrophysiology and removal of arterial plaque." Surgeons current...

New Theory May Explain Ritalin Action In Hyperactivity

...ers back into neurons for reuse. Since the brains of the knockout mice had dopamine levels five timesnormal, their neurons were firing at abnormally high rates, causing them tobehave as do humans with ADHD or those using cocaine. Such mice showedhyperactivity, inattentiveness and lack of impulse co...

'Motion Blindness,' Not Just Poor Memory, Causes Alzheimer's Patients To Lose Their Way

... windshield as one drives through astorm, that our brains use to understand how we're moving. In acar, the way the flakes part helps most individuals realizethey're moving forward; Alzheimer's patients would see the flakesmove, but they have a much harder time understanding what thistells them about their o...

Brain Activity Differs In Introverts And Extroverts, UI Study Shows

...e might be shy or outgoing because of the waytheir brains are structured." Previous studies have shown that introversion and extroversion are based onvariations in brain function, but those studies did not describe all thelocations found in this study. The UI researchers examined 18 healthyindividuals usin...

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