Metabolic syndrome is not associated with reduction in aortic distensibility in subjects with type 2 diabetes mellitus

<p>Abstract</p> <p>Background</p> <p>Aortic distensibility (AD) is a marker of the elastic properties of the aorta. Reduction of AD occurs early in subjects with type 2 diabetes mellitus (T2DM) and it is associated with subclinical generalized atherosclerosis. Metabolic syndrome (MetS) is common in subjects with T2DM and predicts cardiovascular morbidity and mortality. This study examined the potential relationship between MetS and AD in a cohort of subjects with T2DM.</p> <p>Methods and results</p> <p>A total of 210 subjects with T2DM were studied. MetS was diagnosed using the NCEP/ATP-III criteria. AD was assessed non-invasively by ultrasonography. The prevalence of MetS was 64.8%. AD was not significantly different between subjects with and without MetS (1.80 ± 0.54 vs. 1.84 ± 0.53 10^-6dyn^-1cm², p = 0.55). Univariate linear regression analysis showed that AD was associated positively with male sex (p = 0.02) as well as glomerular filtration rate (p < 0.001), and negatively with age (p = 0.04), history of hypertension (p = 0.001), as well as duration of diabetes (p < 0.001). After multivariate adjustment, AD was associated independently and significantly only with age (p = 0.02), duration of diabetes p < 0.001), and history of hypertension (p = 0.004); no significant relationship was found with MetS status, the sum of the components of the MetS or the individual components-besides hypertension-of the MetS.</p> <p>Conclusion</p> <p>In subjects with T2DM, MetS status <it>per se </it>is not associated with reduction of AD. In addition, it was shown that besides ageing, duration of glycemia was a strong predictor of AD. From the components of the MetS only hypertension was associated with reduction of the elastic properties of the aorta.</p

Application of adipose-derived stromal cells in fat grafting: Basic science and literature review

Autologous fat is considered the ideal material for soft‑tissue augmentation in plastic and reconstructive surgery. The primary drawback of autologous fat grafting is the high resorption rate. The isolation of mesenchymal stem cells from adipose tissue inevitably led to research focusing on the study of combined transplantation of autologous fat and adipose derived stem cells (ADSCs) and introduced the theory of ʻcell‑assisted lipotransferʼ. Transplantation of ADSCs is a promising strategy, due to the high proliferative capacity of stem cells, their potential to induce paracrine signalling and ability to differentiate into adipocytes and vascular cells. The current study examined the literature for clinical and experimental studies on cell‑assisted lipotransfer to assess the efficacy of this novel technique when compared with traditional fat grafting. A total of 30 studies were included in the present review. The current study demonstrates that cell‑assisted lipotransfer has improved efficacy compared with conventional fat grafting. Despite relatively positive outcomes, further investigation is required to establish a consensus in cell‑assisted lipotransfer

Pharmacological Properties of DOV 315,090, an ocinaplon metabolite

metabolit

A hexameric [MnIII18Na6] wheel based on [MnIII3O]7+ sub-units

International audienc

Burnout among surgeons before and during the SARS-CoV-2 pandemic: an international survey

Background: SARS-CoV-2 pandemic has had many significant impacts within the surgical realm, and surgeons have been obligated to reconsider almost every aspect of daily clinical practice. Methods: This is a cross-sectional study reported in compliance with the CHERRIES guidelines and conducted through an online platform from June 14th to July 15th, 2020. The primary outcome was the burden of burnout during the pandemic indicated by the validated Shirom-Melamed Burnout Measure. Results: Nine hundred fifty-four surgeons completed the survey. The median length of practice was 10&nbsp;years; 78.2% included were male with a median age of 37&nbsp;years old, 39.5% were consultants, 68.9% were general surgeons, and 55.7% were affiliated with an academic institution. Overall, there was a significant increase in the mean burnout score during the pandemic; longer years of practice and older age were significantly associated with less burnout. There were significant reductions in the median number of outpatient visits, operated cases, on-call hours, emergency visits, and research work, so, 48.2% of respondents felt that the training resources were insufficient. The majority (81.3%) of respondents reported that their hospitals were included in the management of COVID-19, 66.5% felt their roles had been minimized; 41% were asked to assist in non-surgical medical practices, and 37.6% of respondents were included in COVID-19 management. Conclusions: There was a significant burnout among trainees. Almost all aspects of clinical and research activities were affected with a significant reduction in the volume of research, outpatient clinic visits, surgical procedures, on-call hours, and emergency cases hindering the training. Trial registration: The study was registered on clicaltrials.gov "NCT04433286" on 16/06/2020

Monitoring of Aflatoxin M1 in Various Origins Greek Milk Samples Using Liquid Chromatography Tandem Mass Spectrometry

Aflatoxin M1(AFM1), a major metabolite of Aflatoxin B1(AFB1), has been identified as a potential contaminant in dairy products. Because of its possible carcinogenicity, the legislation limits as set by Commission Regulation (EC) No. 1881/2006 are very strict, namely 0.050 &mu;g kg&minus;1 in milk and 0.025 &mu;g kg&minus;1 in infant formulas. To meet these requirements, a sensitive and accurate method was developed, employing liquid chromatography tandem mass spectrometry (UPLC-MS/MS). &Iota;mmunoaffinity columns (R-Biopharm) were used for sample purification and preconcentration of the analyte of interest. The quantification of AFM1 was conducted using fortified milk samples, while Aflatoxin B2 (AFB2) was used as an internal standard (IS). The method was validated in terms of linearity, precision, trueness, limits of detection and quantification and uncertainty. The performance criteria for the method were evaluated based on European Commission Regulation (EC) No. 401/2006 and its most recent amendment, as well as the suggested criteria for revision by the EU Reference Laboratory for Mycotoxins and Plant Toxins. The recovery was in the range of 77.9&ndash;81.0% for all fortification levels (0.025&ndash;0.050&ndash;0.075 &mu;g kg&minus;1), with RSDR values (Relative Standard Deviation of intermediate precision) ranging from 6.1% to 12%. The method&rsquo;s detection and quantification limits were 0.0027 &mu;g kg&minus;1 and 0.0089 &mu;g kg&minus;1, respectively. The occurrence of AFM1 was investigated in 40 samples of different animal origin (cow, goat and sheep milk) provided by Greek producers

Digital Mammography texture analysis by computer assisted image processing

We investigate the use of mammograms texture features in a clinical evaluation in mammography in order to assist in the classification of an image based on the breast tissue index. Breast tissue! indices give the possibility to analyze images and determine the similarity of the Images. and evaluate the classification of the obtained image The measures of similarity of images used for the texture analysis are based upon textural characteristics and the distribution of density in the breast. The features used include the gray-level histogram, and texture features based upon the gray-level co-occurrence matrix, moment-based features obtained by Matlab program application. The performance of the method was measured in terms of precision of retrieval measurements. The results indicate improvement that is related to breast density classification in mammograms. Image processing assisted by computer give the characterization of masses and micro-calcification texture. The methodology proposed in the present work is generic, and can be applied also to other imaging modalities and clinical applications, as for example, Ultrasound breast evaluation and Scintimammograph

D-2-receptor-linked signaling pathways regulate the expression of hepatic CYP2E1

This study investigated the role of catecholamine-related signaling pathways in the regulation of hepatic cytochrome P450 (CYP2E1). Central and peripheral catecholamine depletion with reserpine down-regulated CYP2E1. On the other hand, selective peripheral catecholamine depletion with guanethidine increased CYP2E1 apoprotein levels. Enrichment of peripheral catecholamines with adrenaline suppressed p-nitrophenol hydroxylase activity (PNP). PNP activity was also markedly suppressed by l-DOPA. Stimulation of D2-receptors with bromocriptine up-regulated CYP2E1, as assessed by enzyme activity and protein levels, whereas blockade of D2-dopaminergic receptors with sulpiride down-regulated this isozyme. These findings indicate that central and peripheral catecholamines have different effects on CYP2E1. Central catecholamines appear related to the up-regulation, whereas the role of peripheral catecholamines is clearly related to the type and location of adrenoceptors involved. D2-receptor-linked signaling pathways have an up-regulating effect on CYP2E1, while D1-receptor pathways may down-regulate this isozyme. It is worth noting that the widespread environmental pollutant benzo(α)pyrene (B(α)P) altered the modulating effect of catecholaminergic systems on CYP2E1 regulation. In particular, whereas stimulation or blockade of adrenoceptors had no effect on constitutive PNP activity, exposure to B(α)P modified the impact of central and peripheral catecholamines and α2-adrenoceptors on CYP2E1 expression. It appears that under the influence of B(α)P, α2-adrenergic receptor-linked signaling pathways increased CYP2E1 apoprotein levels. Given that a wide range of xenobiotics and clinically used drugs are activated by CYP2E1 to toxic metabolites, including the production of reactive oxygen species (ROS), it is possible that therapies challenging dopaminergic receptor- and/or alpha2-adrenoceptor-linked signaling pathways may alter the expression of CYP2E1, thus affecting the progress and development of several pathologies