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  • Offersen posted an update 9 months, 1 week ago

    This study highlights sciadopitysin as a promising candidate for antioxidant therapy and designing natural drugs against AGE-induced neurodegenerative disorders.To extend marketing exclusivity, a drug manufacture is required by the Food and Drug Administration to conduct an interpretable study of approved drugs that may benefit pediatric patients. In return for conducting an interpretable study, the drug manufacturer is rewarded with an additional 6 months of marketing exclusivity. If the study design uses a fixed sample size and nothing is changed during the study, it is relatively easy to determine whether an interpretable study was conducted. However, if the sample size can be changed based on an unblinded interim analysis, it is difficult to answer the question of whether the study was interpretable. We investigate the optimal design from the manufacturers perspective and find the strategy for sample size adaptation that optimizes the utility including the chance of an interpretable study.Existing missing data methods for functional data mainly focus on reconstructing missing measurements along a single function-a univariate functional data setting. Motivated by a renal study, we focus on a bivariate functional data setting, where each sampling unit is a collection of two distinct component functions, one of which may be missing. Specifically, we propose a Bayesian multiple imputation approach based on a bivariate functional latent factor model that exploits the joint changing patterns of the component functions to allow accurate and stable imputation of one component given the other. We further extend the framework to address multilevel bivariate functional data with missing components by modeling and exploiting inter-component and intra-subject correlations. We develop a Gibbs sampling algorithm that simultaneously generates multiple imputations of missing component functions and posterior samples of model parameters. For multilevel bivariate functional data, a partially collapsed Gibbs sampler is implemented to improve computational efficiency. Our simulation study demonstrates that our methods outperform other competing methods for imputing missing components of bivariate functional data under various designs and missingness rates. The motivating renal study aims to investigate the distribution and pharmacokinetic properties of baseline and post-furosemide renogram curves that provide further insights into the underlying mechanism of renal obstruction, with post-furosemide renogram curves missing for some subjects. We apply the proposed methods to impute missing post-furosemide renogram curves and obtain more refined insights.Terrestrial toxicology data are limited for comprehensive ecotoxicological risk assessment of ecosystems contaminated by per- and polyfluoroalkyl substances (PFAS) partly because of their existence as mixtures in the environment. This complicates logistical dose-response modeling and establishment of a threshold value characterizing the chronic toxicity of PFAS to ecological receptors. We examined reproduction, growth, and survival endpoints using a combination of hypothesis testing and logistical dose-response modeling of northern bobwhite quail (Colinus virginianus) exposed to perfluorohexanoic acid (PFHxA) alone and to PFHxA in a binary mixture with perfluorooctane sulfonic acid (PFOS) via the drinking water. The exposure concentration chronic toxicity value (CTV) representative of the lowest-observable-adverse effect level (LOAEL) threshold for chronic oral PFAS toxicity (based on reduced offspring weight and growth rate) was 0.10 ng/mL for PFHxA and 0.06 ng/mL for a PFOSPFHxA (2.71) mixture. These estimates corresponded to an adult LOAEL average daily intake CTV of 0.0149 and 0.0082 µg × kg body weight-1  × d-1 , respectively. Neither no-observable-adverse effect level threshold and representative CTVs nor dose-response and predicted effective concentration values could be established for these 2 response variables. The findings indicate that a reaction(s) occurs among the individual PFAS components present in the mixture to alter the potential toxicity, demonstrating that mixture affects avian PFAS toxicity. Thus, chronic oral PFAS toxicity to avian receptors represented as the sum of the individual compound toxicities may not necessarily be the best method for assessing chronic mixture exposure risk at PFAS-contaminated sites. Environ Toxicol Chem 2021;001-14. © 2021 SETAC.

    Aim of our study was to investigate acceptance and use of the German e-mental health website – http://www.psychenet.de offering evidence-based health information, self-tests and patient decision aids concerning mental disorders and issues.

    The website was evaluated by means of an online survey (acceptance) and automatically generated data by web analysis software (use).

    Overall, the website psychenet.de achieved high acceptance ratings among its users. In addition, the number of visitors to the website has increased steadily.

    Results indicate that psychenet.de offers mental health information that are more likely to be used by certain groups (e. g., highly educated persons). Future research should focus on different presentation modes of health information (e. g. text- vs. video-based) for hard to reach target groups in order to potentially increase reach of health information to a broader audience.

    Results indicate that psychenet.de offers mental health information that are more likely to be used by certain groups (e. g., highly educated persons). Future research should focus on different presentation modes of health information (e. g. text- vs. Selleckchem CX-5461 video-based) for hard to reach target groups in order to potentially increase reach of health information to a broader audience.

    Description of employment situation and search for determinants of employment depending on symptom severity in refugees with posttraumatic stress.

    Standardized interviews with 133 Syrian refugees (18 to 65 years) living in Germany with posttraumatic stress symptoms and exploratory data analysis.

    27.1 % of the participants were employed; including 13.9 % women and 86.1 % men (p = 0.001). Links between mental health and employment can be shown (posttraumatic stress p = 0.039, depressiveness p = 0.020, somatisation p = 0.026). With regard to social support and type of trauma, as well as residence status and duration of residence, there were no differences between refugees with and without employment.

    The current analysis on the employment situation of a circumscribed group of Syrian refugees focuses on the importance of psychological symptom burden.

    The current analysis on the employment situation of a circumscribed group of Syrian refugees focuses on the importance of psychological symptom burden.

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