Results 21 to 30 of about 1,297,078 (335)

Dose response relationship in anti-stress gene regulatory networks. [PDF]

open access: yesPLoS Computational Biology, 2007
To maintain a stable intracellular environment, cells utilize complex and specialized defense systems against a variety of external perturbations, such as electrophilic stress, heat shock, and hypoxia, etc.
Qiang Zhang, Melvin E Andersen
doaj   +1 more source

Evaluation of mutagenicity of zinc oxide nanoparticles by Pig-a mutation assay in vivo

open access: yesShanghai yufang yixue, 2022
ObjectiveThe genotoxicity of zinc oxide nanoparticles (ZnO NPs) in rats was determined by Pig⁃a mutation assay in vivo.MethodsCombined with 28-day oral toxicity test, male SD rats were given ZnO NPs by oral administration for 28 days, at doses of 0, 14 ...
CHENG Xueqing   +4 more
doaj   +1 more source

Modeling of dose-response relationships. [PDF]

open access: yesEnvironmental Health Perspectives, 1981
The main dose-response models for chronic toxicity are considered. For dichotomous response, the log probit, multi-hit, and multistage models are presented. For time-to-occurrence response, the log-normal and three variations of multistage models are presented. Finally, the Cornfield hockey-stick model is considered, and, for low-dose extrapolation, it
openaire   +3 more sources

Darbepoetin alfa given every 1 or 2 weeks alleviates anaemia associated with cancer chemotherapy. [PDF]

open access: yes, 2002
In part A of this study, patients were randomised to cohorts receiving darbepoetin alfa at doses of 0.5 to 8.0 m.c.g x kg(-1) x wk(-1) or to a control group receiving epoetin alfa at an initial dose of 150 U x kg(-1) three times weekly.
Armstrong, S   +10 more
core   +2 more sources

Evaluation of oral immunotherapy efficacy and safety by maintenance dose dependency: A multicenter randomized study

open access: yesWorld Allergy Organization Journal, 2020
Background: Generally, oral immunotherapy (OIT) aims for daily administration. Recently, the efficacy of treatment with OIT at a low dose has been reported.
Kiyotake Ogura   +20 more
doaj   +1 more source

Dose-Response Relationships for Carcinogens: A Review [PDF]

open access: yesEnvironmental Health Perspectives, 1987
We review the experimental evidence for various shapes of dose-response relationships for carcinogens and summarize those experiments that give the most information on relatively low doses. A brief review of some models is given to illustrate the shapes of dose-response curve expected from them.
Richard Wilson   +2 more
openaire   +4 more sources

Regions of beta 2 and beta 4 responsible for differences between the steady state dose-response relationships of the alpha 3 beta 2 and alpha 3 beta 4 neuronal nicotinic receptors [PDF]

open access: yes, 1995
We constructed chimeras of the rat beta 2 and beta 4 neuronal nicotinic subunits to locate the regions that contribute to differences between the acetylcholine (ACh) dose-response relationships of the alpha 3 beta 2 and alpha 3 beta 4 receptors ...
Cohen, B. N.   +5 more
core   +2 more sources

The effects of different alcoholic drinks on lipids, insulin and haemostatic and inflammatory markers in older men [PDF]

open access: yes, 2003
Light to moderate drinking is associated with lower risk of coronary heart (CHD) than non-drinkers. We have examined the relationships between total alcohol intake and type of alcoholic beverage and several potential biological mechanisms. We carried out
Lennon, L.   +6 more
core   +1 more source

A Poisson Regression Model for Female Radium Dial Workers [PDF]

open access: yes, 2012
A Poisson regression model with interaction terms was applied to study the dose response relationship for radium-induced skeletal cancers. The model showed that the expected frequency count of bone tumors depended not only on the logarithmic dose and the
Lee, Tze-San
core   +2 more sources

Dose-response relationship for breast cancer induction at radiotherapy dose

open access: yesRadiation Oncology, 2011
Purpose Cancer induction after radiation therapy is known as a severe side effect. It is therefore of interest to predict the probability of second cancer appearance for the patient to be treated including breast cancer.
Gruber Günther   +5 more
doaj   +1 more source

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