Objectives: This study assesses complex factors related to marital and sexual satisfaction among couples undergoing infertility treatment.
Methods: This cross-sectional study was conducted with 140 couples who visited fertility centers in Iran, between September 2015 and July 2016. Data collection was done by Marital and Sexual Satisfaction Questionnaires and were analyzed by the IBM SPSS 26 software.
Background: Infertility is an abnormal event in the life of families and can have various consequences on a personal and social level. Therefore, infertile couples need to manage their emotional responses. Social capital, as one of the social determinants of health, can affect mental health.
View Article and Find Full Text PDFIntroduction: Several studies have shown the role of oxidative stress in pathophysiology of burn injuries. This study aimed to evaluate the changes of oxidant-antioxidant levels during the week following burn injuries and its correlation with grade of burn.
Methods: In this prospective cross-sectional study, changes of total glutathione, reduced glutathione (GSH), oxidized GSH (GSSG), GSH/GSSG ratio, as well as Pro-oxidant-antioxidant balance (PAB) were investigated on the 1, 2 and 7 days of admission in patients with > 15 % burns.
The benchmark dose (BMD) approach is increasingly used as a preferred approach for dose-effect analysis, but standard experimental designs are generally not optimized for BMD analysis. The aim of this study was to evaluate how the use of unequally sized dose groups affects the quality of BMD estimates in toxicity testing, with special consideration of the total burden of animal distress. We generated continuous dose-effect data by Monte Carlo simulation using two dose-effect curves based on endpoints with different shape parameters.
View Article and Find Full Text PDFBackground: Infertility all around the world and in every culture is recognized as a stressful and critical experience that threatens individual, familial, marital, and social stability. Thus, in accordance with the importance of a woman's mental health and the possible impact of mental health on treatment outcome, finding a way to deal with perceived stress in women can help improve pregnancy outcomes.
Methods: This study is a systematic review on reducing perceived infertility stress in infertile women.
Increasingly, dose-response data are being evaluated with the benchmark dose (BMD) approach rather than by the less precise no-observed-adverse-effect-level (NOAEL) approach. However, the basis for designing animal experiments, using equally sized dose groups, is still primed for the NOAEL approach. The major objective here was to assess the impact of using dose groups of unequal size on both the quality of the BMD and overall animal distress.
View Article and Find Full Text PDFIn this study, the cumulative margin of exposure (MOE) was estimated for a group of polychlorinated biphenyls (PCBs) based on reduction of hepatic retinoids as a mode-of-action relevant toxicological endpoint. The MOE was defined as the ratio between a reference dose, derived using the benchmark dose (BMD) approach, and the estimated human dietary PCB exposure. A distribution for the cumulative MOE was established, taking into account inter- and intra-individual variability as well as uncertainty in data measurements.
View Article and Find Full Text PDFBackground: Both industrial chemicals and environmental pollutants can interfere with bone modeling and remodeling. Recently, detailed toxicological bone studies have been performed following exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), which exerts most of its toxic effects through the aryl hydrocarbon receptor (AhR).
Objectives: The aims of the present study were to quantitatively evaluate changes in bone geometry, mineral density and biomechanical properties following long-term exposure to TCDD, and to further investigate the role of AhR in TCDD-induced bone alterations.
In this study, differences in sensitivity between Long-Evans (L-E; dioxin sensitive) and Han/Wistar (H/W; dioxin resistant) rats following long-term exposure to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) were statistically and quantitatively investigated. Sensitivity differences were analyzed by comparing benchmark doses (BMDs) for the two strains considering a number of toxicological endpoints including data on body and organ weights, hepatic foci, hepatic CYP1A1 induction, as well as tissue retinoid levels. Dose-response relationships for L-E and H/W rats, described by the Hill function, were assumed to be parallel, which was supported according to statistical analysis.
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