Results 31 to 40 of about 11,220,800 (302)

Preliminary study on toxicity of low-dose exposure of four polycyclic aromatic hydrocarbons combined in rats

open access: yesZhongguo shipin weisheng zazhi, 2021
ObjectiveTo preliminarily study the toxicity of combined exposure of low-dose of four polycyclic aromatic hydrocarbons.Methods8-week-old male SD rats were randomly divided into 5 groups with 10 rats each, and 0, 10, 50, 250 and 1 000 μg/kg·BW dose were ...
LU Yuxuan   +3 more
doaj   +1 more source

Typical doses and dose rates in studies pertinent to radiation risk inference at low doses and low dose rates [PDF]

open access: yesJournal of Radiation Research, 2018
In order to quantify radiation risks at exposure scenarios relevant for radiation protection, often extrapolation of data obtained at high doses and high dose rates down to low doses and low dose rates is needed. Task Group TG91 on 'Radiation Risk Inference at Low-dose and Low-dose Rate Exposure for Radiological Protection Purposes' of the ...
Rühm, W.   +8 more
openaire   +4 more sources

Efficacy of fixed daily 20 mg of isotretinoin in moderate to severe scar prone acne

open access: yesAdvanced Biomedical Research, 2014
Background: Despite advances in acne therapy in recent years, treatment failure is common. Isotretinoin is the only drug that affects almost all factors in acne pathogenesis, but side-effects are common at the doses reported in published studies in the ...
Abbas Rasi   +3 more
doaj   +1 more source

Divergent Molecular and Cellular Responses to Low and High-Dose Ionizing Radiation

open access: yesCells, 2022
Cancer risk after ionizing radiation (IR) is assumed to be linear with the dose; however, for low doses, definite evidence is lacking. Here, using temporal multi-omic systems analyses after a low (LD; 0.1 Gy) or a high (HD; 1 Gy) dose of X-rays, we show ...
Bharath Sampadi   +17 more
doaj   +1 more source

Assessing the carcinogenic potential of low-dose exposures to chemical mixtures in the environment: the challenge ahead. [PDF]

open access: yes, 2015
Lifestyle factors are responsible for a considerable portion of cancer incidence worldwide, but credible estimates from the World Health Organization and the International Agency for Research on Cancer (IARC) suggest that the fraction of cancers ...
H. K. Salem   +999 more
core   +3 more sources

New Cut-off Value for Low-Dose Acth Stimulation Test in the Diagnosis of Adrenal Insufficiency

open access: yes, 2023
Aim:Although the peak cortisol response in the low-dose test does not reach the generally accepted value of 18 μg/dL, there are many patients whose adrenal insufficiency diagnosis was ruled out by getting an adequate response with the standard-dose test.
M. Masum Canat   +2 more
core   +1 more source

Airway responses and inflammation in subjects with asthma after four days of repeated high-single-dose allergen challenge [PDF]

open access: yes, 2012
Background: Both standard and low-dose allergen provocations are an established tool in asthma research to improve our understanding of the pathophysiological mechanism of allergic asthma.
Rose Markus A   +17 more
core   +1 more source

High vs. Low Radiation Dose of Concurrent Chemoradiotherapy for Esophageal Carcinoma With Modern Radiotherapy Techniques: A Meta-Analysis

open access: yesFrontiers in Oncology, 2020
Purpose: The aim of this study was to evaluate the clinical benefit of different radiation doses in concurrent chemoradiotherapy (CCRT) for esophageal carcinoma using modern radiotherapy techniques.Methods: A systematic review was conducted by screening ...
Xin Sun   +8 more
doaj   +1 more source

The variance-covariance method: Microdosimetry in time-varying low dose-rate radiation fields [PDF]

open access: yes, 1988
The variance-covariance method is employed at low doses and in radiation fields of low dose rates from an241Am (4 nGy/s) and a90Sr (300 nGy/s) source. The preliminary applications and results illustrate some of the potential of the method, and show that ...
Breckow, Joachim   +7 more
core   +1 more source

The Effect of Low Dose of Cadmium on Growth, Reproduction and Chicken Viability

open access: yesFolia Veterinaria, 2020
Cadmium (Cd) is considered to be a highly polluting heavy metal with toxic effects on health and reproduction. In this study, the effects of low dose cadmium on growth, reproductive properties, and egg properties were studied. Cadmium as cadmium chloride
Marettová E., Maretta M.
doaj   +1 more source

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