Tag: "dose" at biology news

Dangerous Chemical Combination Presents Possible Scenario For Gulf War Illnesses

...could withstand without showing clinical signs-- a dose representing at least three times the amount soldiers likely received.DEET and permethrin were administered subcutaneously and PB was given orally. "Even if a person was exposed to one chemical alone at three timesthe recommended dose, he or she wou...

Rosemary May Have Anti-Cancer Properties

...t with half as muchrosemary, then gave them half a dose of DMBA. The results were similar:DMBA's binding to mammary cells was reduced by 66 percent. The researchers also found that rosemary's effectiveness against tumor formationincreased with the amount of fat in the diet. "It suggests that people wh...

Race Plus Roaches: A Breathtaking Link

... sensitive to the allergens, a clear indication of dose responsiveness, the researchers say. "We honestly don't know why race plays a role independent of poverty," says Peyton Eggleston, M.D., professor of pediatrics and co-author of the study. Eggleston speculates that racially based genetic differenc...

International Research Team Clones New Skin Cancer Gene

...occur externally rather than in internal organs, a dose of a medication that can replace the function of the faulty gene could be applied directly to the cancer while minimizing side effects.2 The search for the gene began with studies of a rare hereditary disorder, nevoid basal cell carcinoma syndrome (N...

Bee Sting Treatment Should Emphasize Speed, Not Method Of Removal

...ant, Visscher said. Systemicallergic reactions are dose dependent, so the faster a sting is removed,the less venom is injected, and the less likely a person is to have dangerouswhole-body responses like constriction of breathing or a drop in blood pressure. Additionally, victims of bee stings should leav...

Animal Studies Indicate Aging Brain Responsive To Estrogen

...long-term chronicestrogen doses, or a single acute dose of estrogen. After the treatments, they performed microscopic studies that allowed themto determine how the treatments affected neurons called granule cells inthe rats' hippocampus, a brain region involved in spatial memory. The scientists'study of ...

A Drug Pump On A Computer Chip

...se the patients blood glucose level and change the dose of insulin accordingly," said Huff, who has begun with a pump and a flow sensor to ensure a constant pumping rate. An insulin sensor would have to be added later. Huffs prototype consists of a rectangular silicon chamber with one of the outer wa...

New Vaccine Blocks Viral Entry In Cattle, May Have Implications For Human Vaccines

... "That's an extraordinarily large dose. That one dose contains enough virus to infect every cow in Wisconsin," Letchworth says. "We wanted the challenge dose to be great enough to infect some animals so we could find the limits of protection. Despite that hu...

Resistance To Leptin Contributes To Obesity

...mice lost 15 percent of their body weight,yet this dose had no effect when given to other lean mice by thesubcutaneous injection. "The difference between the increased potency of leptin in leanmice receiving the protein via ICV infusion and those receivingsubcutaneous injections shows that the cen...

First Salmonella Vaccine For Poultry To Be On The Market Soon

...chicken without making the bird sick. When given a dose of the vaccine, newborn chicks, breeders and layin...ill hold between five and ten thousand doses, each dose costing less than a penny per bird." The vaccine also can be delivered quite effectively as an aeros...

Plant-Based Therapies Examined For Colon Cancer Prevention

...Ideally, we would like to find the lowest, optimal dose of each of thethree plant compounds that would safely inhibit the development of colorectalcancer," explains Shiff. The study lasts for up to 10 weeks. During the first two weeks,participants eat a controlled diet so that initial informati...

New Mechanism To Explain Carbon Monoxide Poisoning Identified

... CO over longer periods of time. "A lower dose of carbon monoxide showed a lower magnitude of cell death,but the important thing is that we still saw cell death," says Thom. He measuredtoxicity at levels lower than what typical smokers would have in their bodiesand lower than in the air next to b...

Report Notes Difficulties In Eliminating E. Coli O157:H7 From Food Supply

...ntimicrobials. "[E. coli O157:H7's] low infectious dose in combination with the diseaseseverity means that successful prevention strategies must focus on reducing oreliminating the presence of the microorganism, rather than on preventingpathogen growth as is done in more traditional approaches," Buchanan ...

Synthetic Vitamin E And Natural Vitamin E Are Equally Powerful Antioxidents

...nestudy detected no differences between a 1,600 IU dose of natural or syntheticvitamin E in patients with high cholesterol. "Such a large dose may have inundated the physiological system, negatingany differences that might have been seen with ...

Oral Vaccine Protects Infants From Severe Rotavirus Diarrhea

...dence of fever in the vaccine group afterthe first dose only (15 percent in vaccinees versus 7 percent in controls), thetwo study groups experienced no differences in side effects, and the vaccine wassafe and well-tolerated. ***The Vaccine*** The vaccine consists of a mixture of four viruses (hence the na...

Folic Acid Fortification Effective In Cereal Grains

...the final two trials tostudy a liquid supplemental dose of folate consumed either with or without a light breakfast. The research team analyzed serum and red blood cell folate concentrations of the 14 participantsby microbiological assay. Also, the total folate concentration of urine was measured by highp...

Pitt Researchers Construct Novel Delivery System For Gene Therapy Of Liver Disorders

..., the higher the geneexpression was -- the optimal dose was 50 mg of DNA. Although the highest expression of the gene was found in the liver, geneactivity also was detected in the kidneys and lungs of injected animals. Whenthe researchers injected the mice with a different gene called luciferasec...

National Laboratory Known For Environmental Technology Directing Attention On Solving Agriculture And Food Processing Problems

...ne whether a crop needs more water,fertilizer or a dose of pesticide. Remote sensing, a non-invasive method formeasuring a distant object, offers this possibility. Pacific Northwest researchers are working on the development of airborne andhandheld sensors that will monitor crop conditions quickly and ac...

Experimental Trial Combines DNA Vaccine With Triple-Drug Therapy To Stop HIV

...cine over thenext few months. Each group's vaccine dose will be approximately three times theprevious group's dose level. This procedure maximizes the opportunity to seepositive immunological results while minimizin...

Garlic Prevents Hardening Of Aorta, New Study Shows

COLUMBUS, Ohio -- A healthy dose of garlic in the diet may help preventhardening of the aorta, the major artery that carries blood from the heart,according to a new study. The aorta hardens naturally with age, but a more elastic aorta is beneficialbecause it conducts blood smo...

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(Date:4/22/2014)... scientists have found a way to block abnormal cholesterol ... atherosclerosis, the main cause of heart attacks and strokes ... condition develops when fat builds inside blood vessels over ... reducing their ability to feed oxygen-rich blood to the ... of experiments, described April 7 in the journal ...
(Date:4/22/2014)... (SALT LAKE CITY)A computational tool developed at the University ... with unknown gene mutations in three separate cases, U ... new study in The American Journal of Human ... Re-ranking tool), identifies undiagnosed illnesses and unknown gene mutations ... proteins that code for genes are made, in individual ...
(Date:4/22/2014)... is available in German . ... of the University of Vienna and the Medical University of ... shown how double stranded RNA, such as viral genetic information, ... the immune response against viral infection, the protein ADAR1 moves ... modifies viral RNA to inhibit reproduction of the virus. But ...
(Date:4/22/2014)... influenced by low exposure to testosterone in the womb, ... men,s testosterone levels may be determined before they are ... the hormone than others is important because testosterone is ... hormone have been linked to obesity, diabetes and heart ... for producing testosterone in adults known as Leydig ...
(Date:4/22/2014)... waited in line and most of us have gotten ... like. , For Will Mather, assistant professor of ... Integrated Science Curriculum, studying lines, or queues, has been ... bottlenecks that limit the recycling of proteins. , The ... professor, has received attention from the National Science Foundation ...
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