Abstract The skin, as the largest and most accessible organ in the human body, contains biofluids rich in biomarkers useful not only in diagnosis and monitoring of diseases, but also in profiling an individual’s wellbeing. Advancements in micro- and nanotechnology research have underpinned the development of multifunctional wearable sensing devices. Those sensors may allow monitoring of physiological parameters from different skin sections such as epidermis, dermis and hypodermis by sampling various bodily fluids. Our review summarizes current advances in wearable biosensors for on-skin analysis of sweat, transdermal monitoring of interstitial fluid and analysis of subcutaneous fluids via implanted devices. The review is divided into three main parts describing biosensors acting on the different skin sections. Each part focuses on recent scientific and technological advancements in the wearable biosensing field by highlighting critical challenges as well as providing information on how these barriers are being addressed by the research community.
In the past decades, insulation materials such as petrochemical and inorganic have been used for building insulation. The production of these insulation materials consumes a large amount of energy, which has a significant effect on the environment throughout the life cycle. Comparative performance analyses of renewable (natural) insulation materials for building application in terms of their impact on the environment, the useful lifetime, cost, insulation performance, thermal diffusivity water vapor resistance and flammability were analyzed using statistical tools. It was found that renewable insulating materials have competitive performances with traditional nonrenewable materials in terms of heat insulation performances, fire resistance and cost. Also it was found that renewable materials have significantly better performances such as less impact to the global warming, longer useful lifetime, and lower thermal diffusivity.
Aim To evaluate vertebral bone marrow adiposity (BMA) using magnetic resonance spectroscopy (MRS) in postmenopausal women and to determine an association of bone density with bone marrow fat content. Methods This cross-sectional study included 120 postmenopausal women referred for osteoporosis screening. All women underwent assessment of bone mineral density by dual X-ray absorptiometry (DXA), who were divided based on T scores into osteoporosis (OST; n=60) and control group (CG; n=60). MRS was used to measure fat fraction (FF), lipid/water ratio (LWR) and fat content (FC) at vertebral spine (L1-L4). Results Mean age, menopause or reproductive period duration was not significantly different between women in OST and control group. Median LWR in OST group was significantly higher compared to CG, 31.5 (22.9-38.8) vs. 28.7 (13.7-37.3) (p=0.039). Median FC was significantly higher in OST compared to the control group, 47.0 (46.3-78.8) and 46.4 (44.3-48.6), respectively (p=0.011). FC was significantly negatively associated with BMD at lumbar spine (Rho=-0.042; p<0.001) and with BMD at hip (Rho=-0.64; p<0.001). In logistic regression model, FC remained independently associated with osteoporosis after controlling for confounders (age, menopause duration, reproductive period duration and body mass index) (OR=1.3; 95% CI 1.1-1.6). Conclusion Bone marrow adiposity is an independent predictor of low bone mass in postmenopausal women suggesting its role as a therapeutic target in postmenopausal osteoporosis management.
Background: The effect of conventional anti-platelet agents is limited in secondary stroke prevention, and their effects are further blunted under conditions of high shear stress in the presence of increased levels of circulating VWF. VWF mediates platelet adhesion to collagen under high shear stress and is thereby critically involved in thrombus formation at sites of stenotic extracranial intracranial arteries (reviewed by Buchtele et al. 2018). We have created a novel anti-VWF aptamer (BT200) which could be useful for secondary stroke prevention, because the anti-VWF aptamer ARC1779 effectively reduced cerebral embolization after carotid endarterectomy (Markus et al. 2011). Aims: To characterize the effects of BT200 in blood of patients with large artery atherosclerosis stroke. Methods: Blood samples were obtained from 30 patients with acute stroke Inhibition of VWF activity by BT200 was quantified by REAADS ELISA and VWF ristocetin cofactor activity (VWF:RCo), platelet function under high shear rates with the PFA-100, and ristocetin-induced platelet aggregation in whole blood. Results: The majority of stroke patients had elevated VWF:RCo levels (mean: 198%; range 55-330%). Of 15 patients receiving clopidogrel with or without aspirin, only two had a prolonged collagen adenosine diphosphate closure time (CADP-CT) >123s, and only one patient had a ristocetin induced aggregation of <20U. BT200 concentration dependently inhibited VWF activity to <3% and VWF dependent platelet function (p<0.001): BT200 invariably prolonged CADP-CT to target levels of >300s, and decreased aggregation to <20U in blood samples from all patients. Conclusions: BT200 effectively inhibits VWF activity and VWF-dependent platelet function in blood from patients with acute stroke. Results from this study proved useful for planning of the ongoing phase I and planned phase II trial.
INTRODUCTION The objective of this study was to assess perceptions and attitudes among dental practitioners in relation to antibiotic usage and antibiotic resistance. METHODS Self-administered questionnaire was given to dental practitioners employed in south Croatia, west Herzegovina and Sarajevo, Bosnia and Herzegovina (N=115). RESULTS 81.7% of respondents agreed the usage of antimicrobials is frequently uncritical and unnecessary. 83.5% of dental practitioners reported that have used guidelines in their practice, however, only 9 out of 115 stated valid guidelines. One third of the respondents agreed or were undecided that the usage of antimicrobials in every oral inflammatory process treatment is justified. Furthermore, 13% was undecided and 26% agreed that pregnant women and breastfeeding women should not use any antimicrobials. However, three quarters of respondents considered they had satisfactory knowledge on antimicrobials. DISCUSSION The respondents considered they had satisfactory knowledge on antimicrobials, which was in contrast with the knowledge shown, but also expressed the need for additional education. Therefore, adequate measures include the creation of the local guidelines, their implementation, and updating the practitioners' knowledge on antibiotic use and resistance through continuous educational courses.
Background: Endurance training (ET) and resistance training (RT) are known to be effective in improving anthropometric/body composition and lipid panel indicators, but there is an evident lack of studies on differential effects of these two forms of physical exercise (PE). This study aimed to evaluate the differential effects of 8-week ET and RT among young adult women. Methods: Participants were women (n = 57; age: 23 ± 3 years; initial body height: 165 ± 6 cm; body mass: 66.79 ± 7.23 kg; BMI: 24.37 ± 2.57 kg/m2) divided into the ET group (n = 20), RT group (n = 19), and non-exercising control group (n = 18). All participants were tested for cardiovascular risk factors (CRF), including total cholesterol, high density lipoprotein (HDL), low density lipoprotein (LDL), triglycerides, glucose, and anthropometric/body composition (body mass, body mass index, skinfold measures, body fat %) at the beginning and at the end of the study. Over the 8 weeks, the ET group trained three times/week on a treadmill while the RT group participated in equal number of circuit weight training sessions. Both types of training were planned according to participants’ pre-study fitness status. Results: A two-factor analysis of variance for repeated measurements (“group” × “measurement”) revealed significant main effects for “measurement” in CRF. The “group × measurement” interaction was significant for CRF. The post-hoc analysis indicated significant improvements in CRF for RT and ET. No significant differential effects between RT and ET were evidenced. Conclusions: The results of this study evidence improvements of CRF in young adult women as a result of 8-week ET and RT. The lack of differential training-effects may be attributed to the fact that all participants underwent pre-study screening of their fitness status, which resulted in application of accurate training loads.
Síndrome de Down é uma limitação que impõe múltiplos desafios não apenas para a criança mas também a todos os seus familiares. A síndrome de Down ocorre por conta de uma desordem cromossômica, que resulta na trissomia do cromossomo 21, tendo como fator de risco predominante a idade materna avançada, geralmente, acima de 35 anos. A educação destas crianças passou a ser obrigatória a partir da LDB 9.393/96, no qual garante a todos o direito a educação na escola regular de ensino. Porém, embora seja muito discutida, nota-se que ainda há dificuldades para a inclusão destes alunos, seja pelo despreparo dos professores ou pela falta de estrutura da escola. Por conta de sua dificuldade intelectual o processo de alfabetização e desenvolvimento torna-se comprometido dificultando a concentração e com isso o processo é mais demorado. Por isso é preciso que o professor tenha melhor preparo para integrar e auxiliar as crianças com Down na escola. Para que haja de fato uma aprendizagem satisfatória é essencial que o profissional conheça os métodos que contribuirão para que o aluno se adapte e adquira conhecimento, tornando indispensável a discussão a respeito da temática. A partir de uma pesquisa bibliográfica será analisado como ocorre o processo de aprendizagem destes alunos.
Aim Colorectal carcinoma is one of the most common neoplasms, especially in Western countries and those with westernisation. On the other hand, high rate of metabolic syndrome (MetSy) has also been noticed, as well as in Western countries. It seems like these two conditions are somehow connected. In this study, we wish to explore some characteristics of colorectal carcinoma and its correlation with MetSy. Methods In this retrospective study the data were taken from medical records of 67 patients with colorectal carcinoma, and for 30 healthy controls. Input parameters of patients were compared mutually, as well as with parameters of healthy, control examinees that had negative screening colonoscopy for neoplasm. Results Average age of patients was 68 years. The most frequent localisation of neoplasm was on rectum (53.7%) and most frequent level was Dukes C (38.8%). The patients had MetSy more frequently when compared with controls (p=0.048), and also they had more MetSy components (p=0.006). The link between MetSy and localisation of neoplasm was not found, neither with its pathohystological characteristics. Conclusion Patients with MetSy should be warned about the increased risk of colorectal carcinoma, and, in this way, motivated for earlier and more frequent screening colonoscopies, as well as of a change of unhealthy lifestyle.
Increased antibiotic utilization in hospital is linked to higher total treatment costs, together with increased length of stay, surgery and emergency admission. The aim of our retrospective cohort study was to investigate predictors of antibiotic utilization per single patient from an intensive care unit (ICU) of a tertiary care, university hospital in Serbia. Average utilization of antibiotics per patient was 23.9 ± 20.4 defined daily doses (DDDs). Diagnosis of systemic infection increased antibiotics utilization per patient for 10.0 DDDs, positive blood culture for 5.4 DDDs, isolation of Pseudomonas spp. for 19.5 DDDs, isolation of Acinetobacter spp. for 6.3 DDDs and injury for 7.3 DDDs per patient. Each new day of hospitalization and each additional drug prescribed increased utilization for further 0.3 DDDs and 1.2 DDDs, respectively. Appropriate and limited use of antibiotics in ICU is of key importance for preserving their effectiveness and decrease of bacterial resistance.
One of the frequently occurring tasks during the development of a warehouse management system is the implementation of a routing algorithm of some kind. Whether it is for guiding workers during order picking, routing delivery vehicles or for routing company representatives, this task has proven to be challenging in the technical as well as the social sense. In other words, the task is heavily dependent on various company-specific constraints and it directly dictates the way employees should do their job. This paper describes a strategic approach to the development and gradual integration process of such algorithms which makes sure that all constraints are satisfied and, more importantly, ensures that route suggestions are viewed by the employees as a helpful tool rather than a threat to their job. Described through a real-world case study in a medium-to-large warehouse, the routing efficiency is almost doubled in comparison to the previous approach and critical factors are analysed and discussed throughout different stages of the process.
Increased usage of genomic risk assessment assays suggests increased reliance on data provided by these assays to guide therapy decisions. The current study aimed to assess the change in treatment decision and physician confidence based on the 70-gene risk of recurrence signature (70-GS, MammaPrint) and the 80-gene molecular subtype signature (80-GS, BluePrint) in early stage breast cancer patients. IMPACt, a prospective, case-only study, enrolled 452 patients between November 2015 and August 2017. The primary objective population included 358 patients with stage I-II, hormone receptor-positive, HER2-negative breast cancer. The recommended treatment plan and physician confidence were captured before and after receiving results for 70-GS and 80-GS. Treatment was started after obtaining results. The distribution of 70-GS High Risk (HR) and Low Risk (LR) patients was evaluated, in addition to the distribution of 80-GS compared to IHC status. The 70-GS classified 62.5% (n = 224/358) of patients as LR and 37.5% (n = 134/358) as HR. Treatment decisions were changed for 24.0% (n = 86/358) of patients after receiving 70-GS and 80-GS results. Of the LR patients initially prescribed CT, 71.0% (44/62) had CT removed from their treatment recommendation. Of the HR patients not initially prescribed CT, 65.1% (41/63) had CT added. After receiving 70-GS results, CT was included in 83.6% (n = 112/134) of 70-GS HR patient treatment plans, and 91.5% (n = 205/224) of 70-GS LR patient treatment plans did not include CT. For patients who disagreed with the treatment recommended by their physicians, most (94.1%, n = 16/17) elected not to receive CT when it was recommended. For patients whose physician-recommended treatment plan was discordant with 70-GS results, discordance was significantly associated with age and lymph node status. The IMPACt trial showed that treatment plans were 88.5% (n = 317/358) in agreement with 70-GS results, indicating that physicians make treatment decisions in clinical practice based on the 70-GS result. In clinically high risk, 70-GS Low Risk patients, there was a 60.0% reduction in treatment recommendations that include CT. Additionally, physicians reported having greater confidence in treatment decisions for their patients in 72% (n = 258/358) of cases after receiving 70-GS results. “Measuring the Impact of MammaPrint on Adjuvant and Neoadjuvant Treatment in Breast Cancer Patients: A Prospective Registry” (NCT02670577) retrospectively registered on Jan 27, 2016.
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