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The clinical relevance of numerical predictions of failure mechanisms in femoral prosthesis could be impaired due to simplification of musculoskeletal loading. This study investigated the extent to which loading configurations affect the preclinical analysis of an uncemented femoral implant. Patient-specific, CT-scan based FE models of intact and implanted femurs were developed and analysed using three loading configurations, which comprised of load cases representing daily activities. First loading configuration consisted of two load cases, each of walking and stair climbing. The second consisted of more number of load cases for each of these activities. The third included load cases of additional activities of standing up and sitting down. Failure criteria included maximum principal strains, interface debonding, implant-bone relative displacement and adaptive bone remodelling. Simplified loading configurations led to a reduction (100-1500 με) around cortical principal strains. The area prone to interface debonding were observed in the proximo-medial part of implant and was maximum when all activities were considered. This area was reduced by 35%, when simplified loading configurations were chosen. Interfacial area of 88%-96% experienced implant-bone relative displacements below 40 μm; however maximum of 110 μm was observed at the calcar region. Lack of consideration of variety of activities overestimated (30%-50%) bone resorption around the lateral part of the implant; hence, these bone remodelling results were less clinically relevant. Considering a variety daily activities along with an adequate number of load cases for each activity seemed necessary for pre-clinical evaluations of reconstructed femur.Background Caesarean delivery (C-section) may disrupt maternal-infant microbial transfer and alter immune system development and subsequent risk for atopic dermatitis. Objective Investigate the association between C-section and atopic dermatitis by age four and examine potential sources of bias in the relationship in a large cohort study. Methods Maternal and child information was collected through Kaiser Permanente Northern California's (KPNC) integrated healthcare system. Data sources included electronic medical records, pharmacy databases, state birth records, and prospectively collected breastfeeding surveys. Children were eligible if they were born in a KPNC or contracting hospital between 2005 and 2014 and had continuous enrolment in the KPNC system for at least four years (n = 173 105). Modified Poisson regression with robust variance estimation was used to estimate the association between C-section and atopic dermatitis overall and when stratified by demographic and labour and delivery characteristicsmilial factors.Background The pandemic of new severe acute respiratory syndrome (SARS) due to coronavirus (CoV) 2 (SARS-CoV-2) has stressed the importance of effective diagnostic and prognostic biomarkers of clinical worsening and mortality. Epidemiological data showing a differential impact of SARS-CoV-2 infection on women and men have suggested a potential role for testosterone (T) in determining gender disparity in the SARS-CoV-2 clinical outcomes. Objectives To estimate the association between T level and SARS-CoV-2 clinical outcomes (defined as conditions requiring transfer to higher or lower intensity of care or death) in a cohort of patients admitted in the respiratory intensive care unit (RICU). Materials and methods A consecutive series of 31 male patients affected by SARS-CoV-2 pneumonia and recovered in the respiratory intensive care unit (RICU) of the "Carlo Poma" Hospital in Mantua were analyzed. Several biochemical risk factors (ie, blood count and leukocyte formula, C-reactive protein (CRP), procalcitonin (PCT), lactate dehydrogenase (LDH), ferritin, D-dimer, fibrinogen, interleukin 6 (IL-6)) as well as total testosterone (TT), calculated free T (cFT), sex hormone-binding globulin (SHBG), and luteinizing hormone (LH) were determined. Results Lower TT and cFT were found in the transferred to ICU/deceased in RICU group vs groups of patients transferred to IM or maintained in the RICU in stable condition. Both TT and cFT showed a negative significant correlation with biochemical risk factors (ie, the neutrophil count, LDH, and PCT) but a positive association with the lymphocyte count. Likewise, TT was also negatively associated with CRP and ferritin levels. A steep increase in both ICU transfer and mortality risk was observed in men with TT less then 5 nmol/L or cFT less then 100 pmol/L. Discussion and conclusion Our study demonstrates for the first time that lower baseline levels of TT and cFT levels predict poor prognosis and mortality in SARS-CoV-2-infected men admitted to RICU.Aim This study is aimed to develop and test the measurement of environmental health perceptions and behavior concerning female adolescents' reproductive health. Methods The scales constructed through literature review, in -depth interview, and factor analysis based on the protection motivation theory. The sample comprised 384 female adolescents for exploratory factor analysis, aged 18-22 years, and recruited in September-November 2019 in South Korea. The construct was validated using factor analysis, convergent validity, and known-group comparisons. Reliability was examined using Cronbach's alpha for internal consistency and half-split reliability. Results The environmental health perception for female adolescents (EHP-FA) comprises "Sensitivity," "Susceptibility," "Response efficacy," and "Self-efficacy." The environmental health behavior for female adolescents (EHB-FA), based on principal component analysis, yielded 19 items with five factors, including "Chemical reduction," "Electromagnetic reduction," "Food selection," "Cosmetic selection," "Dust & Gas reduction," and explained 62.6% of the variance (Cronbach's α = .93). Conclusion The utility of EHP-FA and EHB-FA recommend assessment of female youth's environmental attention and health behavior in the community. Nursing professionals can use the scales to promote female adolescents' reproductive health.Background Hypoxia-responsive miRs have been frequently reported in the growth of various malignant tumors. The present study aimed to investigate whether hypoxia-responsive miR-141-3p was implicated in the pathogenesis of breast cancer via mediating the high-mobility group box protein 1 (HMGB1)/hypoxia-inducible factor (HIF)-1α signaling pathway. Materials and methods miRs expression profiling was filtrated by miR microarray assays. Gene and protein expression levels, respectively, were examined by a quantitative reverse transcriptase-polymerase chaion reaction and western blotting. Cell migration and invasion were analyzed using a transwell assay. Cell growth was determined using nude-mouse transplanted tumor experiments. Results miR-141-3p was observed as a hypoxia-responsive miR in breast cancer. miR-141-3p was down-regulated in breast cancer specimens and could serve as an independent prognostic factor for predicting overall survival in breast cancer patients. In addition, the overexpression of miR-141-3p could inhibit hypoxia-induced cell migration and impede human breast cancer MDA-MB-231 cell growth in vivo. Mechanistically, the hypoxia-related HMGB1/HIF-1α signaling pathway might be a possible target of miR-141-3p with respect to preventing the development of breast cancer. Conclusions Our finding provides a new mechanism by which miR-141-3p could prevent hypoxia-induced breast tumorigenesis via post-transcriptional repression of the HMGB1/HIF-1α signaling pathway.Background and purpose Neurosurgical resection is one of the few opportunities researchers have to image the human brain pre- and postfocal damage. A major challenge associated with brains undergoing surgical resection is that they often do not fit brain templates most image-processing methodologies are based on. Manual intervention is required to reconcile the pathology, requiring time investment and introducing reproducibility concerns, and extreme cases must be excluded. Methods We propose an automatic longitudinal pipeline based on High Angular Resolution Diffusion Imaging acquisitions to facilitate a Pathway Lesion Symptom Mapping analysis relating focal white matter injury to functional deficits. This two-part approach includes (i) automatic segmentation of focal white matter injury from anisotropic power differences, and (ii) modeling disconnection using tractography on the single-subject level, which specifically identifies the disconnections associated with focal white matter damage. Results The advantages of this approach stem from (1) objective and automatic lesion segmentation and tractogram generation, (2) objective and precise segmentation of affected tissue likely to be associated with damage to long-range white matter pathways (defined by anisotropic power), (3) good performance even in the cases of anatomical distortions by use of nonlinear tensor-based registration, which aligns images using an approach sensitive to white matter microstructure. Conclusions Mapping a system as variable and complex as the human brain requires sample sizes much larger than the current technology can support. This pipeline can be used to execute large-scale, sufficiently powered analyses by meeting the need for an automatic approach to objectively quantify white matter disconnection.Purpose To accomplish the 3D dose verification to IMRT plan by incorporating DVH information and gamma passing rates (GPs) (DVH_GPs) so as to better correlate the patient-specific quality assurance (QA) results with clinically relevant metrics. Materials and methods DVH_GPs analysis was performed to specific structures of 51 intensity-modulated radiotherapy (IMRT) treatment plans (17 plans each for oropharyngeal neoplasm, esophageal neoplasm, and cervical neoplasm) with Delta4 3D dose verification system. Based on the DVH action levels of 5% and GPs action levels of 90% (3%/2 mm), the evaluation results of DVH_GPs analysis were categorized into four regions as follows the true positive (TP) (%DE> 5%, GPs 5%, GPs ≥ 90%), and the true negative (TN) (%DE ≤ 5%, GPs ≥ 90%). Considering the actual situation, the final patient-specific QA determination was made based on the DVH_GPs evaluation results. In order to exclude the impact of Delta4 phantom on the DVH_GPs evaluation results, 5 cm phantom shift verificationnally, it can distinguish the TP, TN, FP, and FN in the evaluation results. They are affected by many factors such as the action levels of DVH and GPs, the feature of the specific structure, the QA device, etc. Therefore, medical physicist should make final patient-specific QA decision not only by taking into account the information of DVH and GPs, but also the practical situation.The applicability of ninhydrin, a widely used derivatizing reagent, for determination of teicoplanin (TEIC) in its pure form, pharmaceutical vials, and in human plasma was investigated. The presented spectrofluorimetric method was based on a condensation reaction between ninhydrin and the primary amine group existing in TEIC (in the presence of phenylacetaldehyde) to produce a highly fluorescent product detected at 460 nm (λex ,390 nm). Calibration plots were constructed in the concentration range 60-600 ng mL-1 with a good correlation coefficient of 0.9998 and a low detection limit of 10.84 ng mL-1 . The method was subjected to a bioanalytical validation study according to US-FDA recommendations. Genipin mouse The proposed method was applied for analysis of TEIC in commercial vials with high recovery result 101.88 ± 1.11%. In addition, the method was utilized efficiently for detection of TEIC in human plasma using salting-out assisted liquid-liquid extraction technique (SALLE) with a recovery range from 96.71 ± 1.08% to 97.
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