Tag: "dose" at biology news
Study of Latina women and children finds large variation in susceptibility to pesticides
...d mice that lacked the PON1 enzyme, while the same dose
elicited no symptoms in mice with normal levels of the enzyme. Both the quantity and quality of the PON1 enzyme is important in determining the ability to detoxify pesticides." Furlong pointed out that there is a greater risk when dealing with exposu...
U-M researchers take new approach to defeating Gram-negative bugs
... was killed with just a fraction of the antibiotic dose
typically needed. It was 512 times more susceptible to Rifampin, 256 times more vulnerable to Novobiocin, and eight times more susceptible to Bacitracin, suggesting doses could be dramatically cut and still be effective, Woodard said. Antibiotics typ...
New observational study suggests use of combination vaccines may improve immunization coverage rates in infants
...made up of those infants who received at least one dose
of PEDIARIX [Diphtheria and Tetanus Toxoids and Ac...ar primary series) on the timeliness of the fourth dose
of DTaP (second year booster dose). Of the children previously identified, 36.0 percent were on tim...
Tips from the journals of the American Society for Microbiology
...up of immunized mice were challenged with a lethal dose
of ZEBOV and the survival rate was 100%. "To our knowledge, this is the first demonstration of a bivalent EBOV vaccine to coexpress multiple serotype proteins in a single vaccine construct, eliciting efficient humoral and cellular immune responses t...
Newly discovered small molecules
...lysis and, unless treated quickly, death. A lethal dose
is small--eight tenths of an inhaled microgram for a 175-pound person. Because of its highly potent neurotoxic activity, Janda added, the use of BoNT is also of substantial global concern as a potential bioterrorist weapon. One of the main drawback...
OHSU study aims to halt Alzheimer's by blocking enzyme
... protein occurred three hours after a 40 milligram dose
was taken. The drug also was well tolerated. "This study involved active treatment for only six weeks," Quinn said. "Clinical outcomes were not expected to change. This was the first step toward a trial intended to achieve clinical effects." OHSU wa...
Pepper component hot enough to trigger suicide in prostate cancer cells
...rown in mouse models." Lehmann estimated that the dose
of pepper extract fed orally to the mice was equivalent to giving 400 milligrams of capsaicin three times a week to a 200 pound man, roughly equivalent to between three and eight fresh habaera peppers depending on the pepper's capsaicin content. Hab...
Novel vaccine approach stimulates protective immunity against listeria
...ccine strain were resistant to 40 times the lethal dose
of virulent Listeria. "In theory, we could apply this vaccine strategy to other bacterial pathogens like Salmonella," said Higgins. "All we need is to use existing strains that do not replicate inside host cells." The new Listeria vaccine was based...
Changes to in utero environment may alter onset of cancer, U of T study
...ther a normal diet or one supplemented with a high dose
of vitamin E. The offspring were then observed for... E, preliminary studies using a much lower dietary dose
found a protective effect, suggesting that optimal adjustments to the in utero environment, which ma...
Moderate lifetime reductions in LDL cholesterol dramatically reduce risk of heart disease
...ed in this study can easily be achieved with a low dose
of cholesterol-lowering drugs called statins. The...e to the reduction that can be achieved with a low dose
of cholesterol-lowering statins, Hobbs said. However, the effect of the genetic variation on heart d...
FDA approves extended dosing of Aranesp
... Aranesp label now includes a recommended starting dose
of 500 mcg once every three weeks in addition to the recommended starting dose
of 2.25 mcg/kg once weekly. The new dosing recommendations are based on a randomized, double-blind,...
Horse antibodies against the bird flu virus H5N1 are effective as treatment in mice
...( http://respiratory-research.com ) reveals that a dose
of 100 g of horse anti-serum effectively protects ...a infected dog kidney cells in vitro with a lethal dose
of H5N1 and simultaneously exposed the cells to horse antibodies against H5N1. Lu et al.'s results s...
Prenatal genistein in soy reduces obesity in offspring
...mental, depending upon the timing of exposure, the dose
and the tissue exposed, said Jirtle. "Our study demonstrates there are highly sensitive windows early in development when environmental exposures can permanently alter the offspring's adult susceptibility to disease," said Jirtle. "Therefore, we need...
Cellular scale drug delivery from the inside out
Delivering a dose
of chemotherapy drugs to specific cancer cells without the risk of side affects to healthy cells may one day be possible thanks to a nanoscale drug delivery system being explored by researchers at the U.S. Department of Energy's Ames Laboratory. Usin...
Duke to test bird flu vaccine dosing
...tium and leader of the Duke study. "If the smaller dose
stimulates immunity against the virus, then more people could be immunized with existing supplies if a pandemic occurs," he said. The study will use an inactivated flu virus vaccine based on a strain taken from a Vietnamese patient in 2004. "There is...
Plants give pests sock in the gut
... When used in conjunction with the Bt-toxin, a low dose
of Mir1-CP was able to achieve a very high mortality rate in the insects, as well as an extremely low growth rate. "In the long run, the enzyme degrades the insect's peritrophic matrix and retards the caterpillar's ability to generate a new one," s...
UC Davis, Lawrence Livermore researchers
...ia can be treated with monthly shots or daily high dose
tablets of vitamin B12 to correct the anemia and reverse the damage to the myelin sheath. The new test also will allow physicians to rule out pernicious anemia in patients who have a B12 deficiency caused by vegan diets and diseases such as gastriti...
Studies confirm celecoxib may help prevent colorectal cancer in high risk patients
... this trial took into consideration the use of low dose
aspirin in 31 percent of participants. A follow-up colonoscopy was conducted in 89 percent of participants after one year and 76 percent received a follow-up colonoscopy at three years. The incidence of one or more benign tumors during colonoscopy...
Plexxikon advances first oncology development candidate
...resented preclinical data demonstrating that a low dose
of this oral V600E B-Raf inhibitor preferentially ...r facilitated by monitoring biomarkers that aid in dose
selection and give an early read on the response of a tumor under therapy....
Equivalent of 2-4 drinks daily fuels blood vessel growth, encourages cancer tumors in mice
... humans, the researchers gave mice a more moderate dose
-- the equivalent to 2-4 glasses of alcohol per day. Six male mice received 1% alcohol in their drinking water for eight hours each night during the four-week experiment, Tan said. The six mice in the control group received plain water. In the second...
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