736 research outputs found
Unveiling the bioactive potential of fresh fruit and vegetable waste in human health from a consumer perspective
Food supply disruption and shortage verified during the current pandemic events are a
scenario that many anticipate for the near future. The impact of climate changes on food production,
the continuous decrease in arable land, and the exponential growth of the human population are
important drivers for this problem. In this context, adding value to food waste is an obvious strategy
to mitigate food shortages, but there is a long way to go in this field. Globally, it is estimated that
one-third of all food produced is lost. This is certainly due to many different factors, but the lack
of awareness of the consumer about the nutritional value of certain foods parts, namely peels and
seeds, is certainly among them. In this review, we will unveil the nutritional and bioactive value of
the waste discarded from the most important fresh fruit and vegetables consumed worldwide as a
strategy to decrease food waste. This will span the characterization of the bioactive composition of
selected waste from fruits and vegetables, particularly their seeds and peels, and their possible uses,
whether in our diet or recycled to other ends.info:eu-repo/semantics/publishedVersio
Overview of Different Modes and Applications of Liquid Phase-Based Microextraction Techniques
Liquid phase-based microextraction techniques (LPµETs) have attracted great attention
from the scientific community since their invention and implementation mainly due to their high effi ciency, low solvent and sample amount, enhanced selectivity and precision, and good reproducibility
for a wide range of analytes. This review explores the different possibilities and applications of
LPµETs including dispersive liquid–liquid microextraction (DLLME) and single-drop microextrac tion (SDME), highlighting its two main approaches, direct immersion-SDME and headspace-SDME,
hollow-fiber liquid-phase microextraction (HF-LPME) in its two- and three-phase device modes using
the donor–acceptor interactions, and electro membrane extraction (EME). Currently, these LPµETs
are used in very different areas of interest, from the environment to food and beverages, pharma ceutical, clinical, and forensic analysis. Several important potential applications of each technique
will be reported, highlighting its advantages and drawbacks. Moreover, the use of alternative and
efficient “green” extraction solvents including nanostructured supramolecular solvents (SUPRASs,
deep eutectic solvents (DES), and ionic liquids (ILs)) will be discussed.info:eu-repo/semantics/publishedVersio
Green extraction techniques as advanced sample preparation approaches in biological, food, and environmental matrices: A review
Green extraction techniques (GreETs) emerged in the last decade as greener and sustainable alternatives to classical sample preparation procedures aiming to improve the selectivity and sensitivity of analytical methods, simultaneously reducing the deleterious side effects of classical extraction techniques (CETs) for both the operator and the environment. The implementation of improved processes that overcome the main constraints of classical methods in terms of efficiency and ability to minimize or eliminate the use and generation of harmful substances will promote more efficient use of energy and resources in close association with the principles supporting the concept of green chemistry. The current review aims to update the state of the art of some cutting-edge GreETs developed and implemented in recent years focusing on the improvement of the main analytical features, practical aspects, and relevant applications in the biological, food, and environmental fields. Approaches to improve and accelerate the extraction efficiency and to lower solvent consumption, including sorbent-based techniques, such as solid-phase microextraction (SPME) and fabric-phase sorbent extraction (FPSE), and solvent-based techniques (μQuEChERS; micro quick, easy, cheap, effective, rugged, and safe), ultrasound-assisted extraction (UAE), and microwave-assisted extraction (MAE), in addition to supercritical fluid extraction (SFE) and pressurized solvent extraction (PSE), are highlighted.This research was funded by FCT (Fundação para a Ciência e a Tecnologia) through the
CQM Base Fund, UIDB/00674/2020, Programmatic Fund, UIDP/00674/2020, and CEB—Centre of
Biological Engineering, and by ARDITI (Agência Regional para o Desenvolvimento da Investigação
Tecnologia e Inovação) through the project M1420-01-0145-FEDER-000005, Centro de Química da
Madeira (CQM+; Madeira 14-20 Program). The authors also acknowledge FCT and the Madeira
14–20 Program to the Portuguese Mass Spectrometry Network (RNEM) through the PROEQUIPRAM
program, M14-20 M1420-01-0145-FEDER-000008). ARDITI is also acknowledged for the postdoctoral
fellowship granted to J.A.M.P. (Project M1420-09-5369-FSE-000001).info:eu-repo/semantics/publishedVersio
IL28B SNP rs8099917 Is Strongly Associated with Pegylated Interferon-α and Ribavirin Therapy Treatment Failure in HCV/HIV-1 Coinfected Patients
Recent genome-wide association studies report that the SNP rs8099917, located 8.9 kb upstream of the start codon of IL28B, is associated with both disease chronicity and therapeutic response to pegIFN-α and RBV in patients infected with genotype 1 HCV. To determine the effect of rs8099917 variation on the response of HCV to therapy, we genotyped this variant in a cohort of 160 HCV/HIV-1 coinfected patients in our clinic unit who received combined peg-IFN-α/RBV therapy. The rs8099917 T/G or G/G genotypes were observed in 56 patients (35%). Treatment failure occurred in 80% of G-allele carriers versus 48% of non-carriers (P<0.0001). This result reveals that the G allele was strongly associated with treatment failure in this patient cohort. Importantly, a highly significant association was found between the G-allele and response to therapy in HCV genotype 1-infected patients (P<0.0001) but not in HCV genotype 3-infected patients. Multivariate analysis (odds ratio; 95% confidence interval; P value) indicated that the rs8099917 TT genotype was a strong predictor of treatment success (5.83; 1.26–26.92; P = 0.021), independent of baseline plasma HCV-RNA load less than 500 000 IU/ml (4.85; 1.18–19.95; P = 0.025) and absence of advanced liver fibrosis (5.24; 1.20–22.91; P = 0.025). These results reveal the high prevalence of the rs8099917 G allele in HCV/HIV-1 coinfected patients as well as its strong association with treatment failure in HCV genotype 1-infected patients. rs8099917 SNP genotyping may be a valid pre-treatment predictor of which patients are likely to respond to treatment in this group of difficult-to-treat HCV/HIV-infected patients
Can serum hyaluronic acid replace simple non-invasive indexes to predict liver fibrosis in HIV/Hepatitis C coinfected patients?
<p>Abstract</p> <p>Background</p> <p>Hyaluronic acid (HA) serum levels correlate with the histological stages of liver fibrosis in hepatitis C virus (HCV) monoinfected patients, and HA alone has shown very good diagnostic accuracy as a non-invasive assessment of fibrosis and cirrhosis. The aim of this study was to evaluate serum HA levels as a simple non-invasive diagnostic test to predict hepatic fibrosis in HIV/HCV-coinfected patients and to compare its diagnostic performance with other previously published simple non-invasive indexes consisting of routine parameters (HGM-1, HGM-2, Forns, APRI, and FIB-4).</p> <p>Methods</p> <p>We carried out a cross-sectional study on 201 patients who all underwent liver biopsies and had not previously received interferon therapy. Liver fibrosis was determined via METAVIR score. The diagnostic accuracy of HA was assessed by area under the receiver operating characteristic curves (AUROCs).</p> <p>Results</p> <p>The distribution of liver fibrosis in our cohort was 58.2% with significant fibrosis (F≥2), 31.8% with advanced fibrosis (F≥3), and 11.4% with cirrhosis (F4). Values for the AUROC of HA levels corresponding to significant fibrosis (F≥2), advanced fibrosis (F≥3) and cirrhosis (F4) were 0.676, 0.772, and 0.863, respectively. The AUROC values for HA were similar to those for HGM-1, HGM-2, FIB-4, APRI, and Forns indexes. The best diagnostic accuracy of HA was found for the diagnosis of cirrhosis (F4): the value of HA at the low cut-off (1182 ng/mL) excluded cirrhosis (F4) with a negative predictive value of 99% and at the high cut-off (2400 ng/mL) confirmed cirrhosis (F4) with a positive predictive value of 55%. By utilizing these low and high cut-off points for cirrhosis, biopsies could have theoretically been avoided in 52.2% (111/201) of the patients.</p> <p>Conclusions</p> <p>The diagnostic accuracy of serum HA levels increases gradually with the hepatic fibrosis stage. However, HA is better than other simple non-invasive indexes using parameters easily available in routine clinical practice only for the diagnosing of cirrhosis.</p
Differences in pharmaceutical consumption and expenses between immigrant and Spanish-born populations in Lleida, (Spain): A 6-months prospective observational study
<p>Abstract</p> <p>Background</p> <p>There are few studies comparing pharmaceutical costs and the use of medications between immigrants and the autochthonous population in Spain. The objective of this study is to evaluate whether there are differences in pharmaceutical consumption and expenses between immigrant and Spanish-born populations.</p> <p>Methods</p> <p>Prospective observational study in 1,630 immigrants and 4,154 Spanish-born individuals visited by fifteen primary care physicians at five public Primary Care Clinics (PCC) during 2005 in the city of Lleida, Catalonia (Spain). Data on pharmaceutical consumption and expenses was obtained from a comprehensive computerized data-collection system. Multinomial regression models were used to estimate relative risks and confidence intervals of pharmaceutical expenditure, adjusting for age and sex.</p> <p>Results</p> <p>The percentage of individuals that purchased medications during a six-month period was 53.7% in the immigrant group and 79.2% in the autochthonous group. Pharmaceutical expenses and consumption were lower in immigrants than in autochthonous patients in all age groups and both genders. The relative risks of being in the highest quartile of expenditure, for Spanish-born versus immigrants, were 6.9, 95% CI = (4.2, 11.5) in men and 5.3, 95% CI = (3.5, 8.0) in women, with the reference category being not having any pharmaceutical expenditure.</p> <p>Conclusion</p> <p>Pharmaceutical expenses are much lower for immigrants with respect to autochthonous patients, both in the percentage of prescriptions filled at pharmacies and the number of containers of medication obtained, as well as the prices of the medications used. Future studies should explore which factors explain the observed differences in pharmaceutical expenses and if these disparities produce health inequalities.</p
ICO-ICS Praxis para el tratamiento médico y con irradiación del adenocarcinoma del páncreas
Tractament mèdic; Tractament amb irradiació; Adenocarcinoma; Pàncrees; CàncerTratamiento médico; Tratamiento con irradiación; Adenocarcinoma; Páncreas; CáncerMedical treatment; Irradiation treatment; Adenocarcinoma; Pancreas; CancerEl càncer de pàncrees se situa com la tercera causa més freqüent de càncer en la forma d'adenocarcinoma ductal pancreàtic. És un dels càncers més agressius i amb un percentatge més baix de curació. Els objectius d'aquesta guia són:
-Desenvolupar, difondre, implementar i avaluar resultats de la ICO-ICSPraxi de càncer de pàncrees.
-Disminuir la variabilitat terapèutica entre els pacients tractats als diferents centres d'aquesta institució.
-Implementar els resultats de la terapèutica en els pacients amb adenocarcinoma de pàncrees tractats d'acord amb les recomanacions d'aquesta guia
Electron and photon reconstruction and identification with the CMS experiment at the CERN LHC
The performance is presented of the reconstruction and identification algorithms for electrons and photons with the CMS experiment at the LHC. The reported results are based on proton-proton collision data collected at a center-of-mass energy of 13 TeV and recorded in 2016-2018, corresponding to an integrated luminosity of 136 fb(-1). Results obtained from lead-lead collision data collected at root S-NN = 5.02 TeV are also presented. Innovative techniques are used to reconstruct the electron and photon signals in the detector and to optimize the energy resolution. Events with electrons and photons in the final state are used to measure the energy resolution and energy scale uncertainty in the recorded events. The measured energy resolution for electrons produced in Z boson decays in proton-proton collision data ranges from 2 to 5%, depending on electron pseudorapidity and energy loss through bremsstrahlung in the detector material. The energy scale in the same range of energies is measured with an uncertainty smaller than 0.1 (0.3)% in the barrel (endcap) region in proton-proton collisions and better than 1(3)% in the barrel (endcap) region in heavy ion collisions. The timing resolution for electrons from Z boson decays with the full 2016-2018 proton-proton collision data set is measured to be 200 ps.Peer reviewe
- …