Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 611
Filtrar
1.
Sci Total Environ ; 912: 169454, 2024 Feb 20.
Artigo em Inglês | MEDLINE | ID: mdl-38123101

RESUMO

Using reclaimed water for agricultural irrigation is increasing worldwide to compensate for water scarcity. The aim of this work was to evaluate the uptake of some of the most commonly detected organic contaminants of emerging concern (CECs) and pesticides in regenerated water in a field study. Furthermore, it was studied their distribution and accumulation in the different parts of a crop (soil, plant and fruit). Three crops (cucumber, pepper and melon) were grown under controlled agronomic conditions in a greenhouse. In order to make an accurate evaluation of the process, "regenerated blank water" was spiked with 70 chemicals (including antibiotics, anti-inflammatories, analgesics, anaesthetics, anxiolytics, anticonvulsants, pesticides) at environmental concentrations (∼1 µg/L) and used for continuous crop irrigation. After crop season, the average total concentration of contaminants detected in the soil samples ranged from 132 to 232 µg/kg d.w depending of the crops type. Between 7 and 10 different contaminants were found in the harvested fruits, up to levels of 27.8 µg/kg f.w. cucumber, 12.4 µg/kg f.w. melon and 7.8 µg/kg f.w pepper. In general, cucumber fruit showed higher accumulation levels of contaminants than pepper and melon for most target analytes. The accumulation rates followed the order: root (0.2 %) < stem/leaf (1-4 %) < fruit (1-6 %) < soil (17-30 %). The experimental data obtained in this study were also used to assess the risk associated with the reuse of reclaimed water for crop irrigation as well to identify those contaminants that, due to their physicochemical properties, show higher accumulation rates and environmental impact.


Assuntos
Cucumis sativus , Praguicidas , Água , Produtos Agrícolas , Agricultura , Irrigação Agrícola , Solo
2.
Sci Total Environ ; 859(Pt 2): 160462, 2023 Feb 10.
Artigo em Inglês | MEDLINE | ID: mdl-36435246

RESUMO

The use of reclaimed water for crop irrigation has been proposed as a suitable alternative for farmers in the coastal areas of Mediterranean countries, which suffer from greater water scarcity. In this work we study the impact on the water-soil-plant continuum of using reclaimed water for commercial crops irrigated over a long period, as well as the human risks associated with consuming the vegetables produced. Forty-four CECs were identified in the reclaimed water used for crop irrigation. Of these, twenty-four CECs were identified in the irrigated soil samples analysed. Tramadol, ofloxacin, tonalide, gemfibrozil, atenolol, caffeine, and cetirizine were the pharmaceuticals detected at the highest levels in the water samples (between 11 and 44 µg/L). The CECs with the highest average soil concentrations were tramadol (14.6 µg/kg), followed by cetirizine (13.2 µg/kg) and clarithromycin (12.7 µg/kg). In the irrigated vegetable samples analysed over the study period, carbamazepine, lidocaine, and caffeine were only detected at levels from 0.1 to 1.7 µg/kg. The CEC accumulation rate detected in the edible parts of the vegetables permanently irrigated with reclaimed water was very low (~1 %), whereas it was 33 % in the soils. The results revealed that consuming fruits harvested from plants irrigated for a long period with reclaimed water does not represent a risk to human health, opening the door to a circular economy of water. Nevertheless, for crop irrigation, future studies need to be conducted over longer periods and in other matrices to provide more scientific data on the safety of using reclaimed water.


Assuntos
Irrigação Agrícola , Poluentes do Solo , Humanos , Água/análise , Águas Residuárias , Produtos Agrícolas , Solo , Verduras , Poluentes do Solo/análise
3.
Nat Commun ; 13(1): 7529, 2022 12 07.
Artigo em Inglês | MEDLINE | ID: mdl-36477027

RESUMO

Precision oncology research is challenging outside the contexts of oncogenic addiction and/or targeted therapies. We previously showed that phosphoproteomics is a powerful approach to reveal patient subsets of interest characterized by the activity of a few kinases where the underlying genomics is complex. Here, we conduct a phosphoproteomic screening of samples from HER2-negative female breast cancer receiving neoadjuvant paclitaxel (N = 130), aiming to find candidate biomarkers of paclitaxel sensitivity. Filtering 11 candidate biomarkers through 2 independent patient sets (N = 218) allowed the identification of a subgroup of patients characterized by high levels of CDK4 and filamin-A who had a 90% chance of achieving a pCR in response to paclitaxel. Mechanistically, CDK4 regulates filamin-A transcription, which in turn forms a complex with tubulin and CLIP-170, which elicits increased binding of paclitaxel to microtubules, microtubule acetylation and stabilization, and mitotic catastrophe. Thus, phosphoproteomics allows the identification of explainable factors for predicting response to paclitaxel.


Assuntos
Neoplasias da Mama , Paclitaxel , Feminino , Humanos , Neoplasias da Mama/tratamento farmacológico , Quinase 4 Dependente de Ciclina , Genômica , Paclitaxel/farmacologia , Medicina de Precisão
4.
Rev. esp. cardiol. (Ed. impr.) ; 75(11): 926-935, nov. 2022. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-211714

RESUMO

Introducción y objetivos Se actualizan los datos anuales de Registro español de trasplante cardiaco con los hallazgos de los procedimientos realizados en 2021. Métodos Se describen las principales características clínicas, del tratamiento recibido y de los resultados en términos de supervivencia del año 2021 y las tendencias en el periodo 2012-2020. Resultados En 2021 se han realizado 302 trasplantes cardiacos (un 8,6% más que el año anterior). En 2021 se ha confirmado la tendencia observada en años anteriores a una disminución de los trasplantes urgentes y a la realización de estos mayoritamente con dispositivos de asistencia ventricular. Las demás características y los resultados en términos de supervivencia muestran una clara tendencia a la estabilización en la última década. Respecto a 2019, en los años de la pandemia por SARS-CoV-2 (2020 y 2021) no se detecta un impacto relevante en los resultados en la fase aguda tras el trasplante y en la serie histórica. Conclusiones En 2021 se ha recuperado la actividad de trasplante hasta cifras previas a la pandemia por SARS-CoV-2, que no ha tenido un impacto global significativo en los resultados. Las características del procedimiento y los resultados muestran una clara tendencia a la estabilización en la última década (AU)


Introduction and objectives This report updates the annual data of the Spanish heart transplant registry with the procedures performed in 2021. Methods We describe the clinical profile, therapeutic characteristics and outcomes in terms of survival of the procedures performed in 2021. Their temporal trends are updated for the 2012 to 2020 period. Results In 2021, 302 heart transplants were performed (8.6% increase versus 2020). The tendency in 2021 confirmed that of prior years, with fewer urgent transplants and a preference for the use of ventricular assist devices. The remaining characteristics and survival showed a clear trend toward stability in the last decade. Compared with 2019, the SARS-CoV-2 pandemic (2020 and 2021) did not affect short- or long-term survival. Conclusions In 2021, transplant activity returned to prepandemic levels. The SARS-CoV-2 pandemic did not significantly affect transplant outcomes. The main transplant features and outcomes have clearly stabilized in the last decade (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Sistema de Registros , Transplante de Coração/estatística & dados numéricos , Análise de Sobrevida , Sociedades Médicas , Espanha
5.
Immunohematology ; 38(1): 17-24, 2022 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-35852060

RESUMO

According to recent work group recommendations, individuals with the serologic weak D phenotypes should be RHD genotyped and individuals with molecular weak D types 1, 2, 3, 4.0, or 4.1 should be treated as D+. We report an African American woman with a long-standing history of metrorrhagia, who presented for infertility evaluation. Blood grouping showed AB with a possible subgroup of A, based on mixed-field agglutination, and a serologic weak D phenotype. Results from routine red cell genotyping for the RHD gene was incongruent with the serologic RhCE phenotype. For the surgical procedure, the patient was hence scheduled to receive group AB, D- RBC transfusions. Subsequent molecular analysis identified the ABO*A2.01 and ABO*B.01 alleles for the ABO genotype and the novel RHD allele [NG_007494.1(RHD):c.611T>A] along with an RHD*09.01.02 allele for the RHD genotype. Using a panel of monoclonal anti-D reagents, we showed the novel RHD(I204K) allele to represent a serologic weak D phenotype, despite occurring as a compound heterozygote, designated RHD*weak D type 161 (RHD*01W.161). Individuals with a weak D type 4.2 allele are prone to anti-D immunization, while the immunization potential of novel RHD alleles is difficult to predict. For now, patients should be treated as D- in transfusion and pregnancy management, when they harbor a novel RHD allele along with any weak D allele other than weak D types 1, 2, 3, 4.0, or 4.1. This study exemplifies strategies for how and when a laboratory should proceed from routine genotyping to nucleotide sequencing before any decisions on transfusion practice is made.


Assuntos
Tipagem e Reações Cruzadas Sanguíneas , Sistema do Grupo Sanguíneo Rh-Hr , Alelos , Transfusão de Sangue , Feminino , Genótipo , Humanos , Fenótipo , Gravidez , Sistema do Grupo Sanguíneo Rh-Hr/genética
6.
Rev Esp Anestesiol Reanim (Engl Ed) ; 69(2): 79-87, 2022 02.
Artigo em Inglês | MEDLINE | ID: mdl-35177367

RESUMO

Cardiogenic shock (CS) is a condition comprising multiple etiologies, which associates high mortality rates. Some scoring systems have been shown to be good predictors of hospital mortality in patients admitted to Critical Care Units (CCU). The main objective of this study is to analyze their usefulness and validity in a cohort of CS patients. METHODS: Observational unicentric study of a cohort of CS patients. SOFA, SAPS II and APACHE II scores were calculated in the first 24 h of CCU admission. RESULTS: 130 patients with CS were included. SOFA, SAPS II and APACHE II scores revealed good discrimination for hospital mortality: (AUC) ROC values (AUC: 0.711, 0.752 and 0.742 respectively; P = .6). Calibration, estimated by the Hosmer-Lemeshow test, was adequate in all cases. Acute coronary syndrome, lactate serum values, SAPS II score and vasoactive inotropic score (VIS) were found to be independent predictors for mortality, upon ICU admission. With these variables, a specific prognostic indicator was developed (SAPS-2-LIVE), which improved predictive capability for mortality in our series (AUC) ROC, 0.825 (95% CI 0.752-0.89). CONCLUSION: In this contemporary CS cohort, the aforementioned scores have been shown to have good predictive ability for hospital mortality. These findings could contribute to a more accurate risk stratification in CS.


Assuntos
Choque Cardiogênico , APACHE , Mortalidade Hospitalar , Humanos , Prognóstico , Estudos Retrospectivos , Choque Cardiogênico/diagnóstico
7.
Rev. esp. anestesiol. reanim ; 69(2): 79-87, Feb 2022. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-206706

RESUMO

El shock cardiogénico (SC) es una entidad que comprende múltiples etiologías y asocia elevada mortalidad. Algunas escalas de gravedad han demostrado ser buenos predictores de mortalidad hospitalaria en pacientes ingresados en Unidades de Cuidados Intensivos (UCI). El objetivo principal de este estudio es analizar su utilidad y validez en una cohorte de pacientes en SC. Métodos: Estudio observacional unicéntrico. Se calcularon las escalas SOFA, SAPSII y APACHEII en las primeras 24horas de ingreso en UCI. Resultados: Se incluyeron 130 pacientes con SC. Las escalas SOFA, SAPSII y APACHEII mostraron buena discriminación para la mortalidad hospitalaria, obteniendo valores de área bajo la curva (AUC) ROC similares (AUC: 0,711, 0,752 y 0,742, respectivamente; p=0,6). La calibración, estimada por el test de Hosmer-Lemeshow, fue adecuada en todos los casos, SOFA (p=0,787), SAPSII (p=0,078) y APACHEII (p=0,522). Resultaron: predictores independientes de mortalidad intrahospitalaria: el síndrome coronario agudo (SCA), los valores de lactato sérico, el SAPSII y el índice de vasoactivos inotrópicos (VIS) en las primeras 24horas de ingreso en UCI.Con estas variables se desarrolló un indicador pronóstico específico para el SC (SAPS-2-LIVE) que mejora la capacidad predictiva de mortalidad en nuestra serie (AUC) ROC, 0,825 (IC 95% 0,752-0,89). Conclusión: En esta cohorte contemporánea de SC, las escalas SOFA, SAPSII y APACHEII han demostrado una buena capacidad de predicción de mortalidad hospitalaria. Estos hallazgos podrían contribuir a una mejor estratificación del riesgo en el SC.(AU)


Cardiogenic shock (CS) is a condition comprising multiple etiologies, which associates high mortality rates. Some scoring systems have been shown to be good predictors of hospital mortality in patients admitted to Critical Care Units (CCU). The main objective of this study is to analyze their usefulness and validity in a cohort of CS patients. Methods: Observational unicentric study of a cohort of CS patients. SOFA, SAPSII and APACHEII scores were calculated in the first 24hours of CCU admission. Results: 130 patients with CS were included. SOFA, SAPSII and APACHEII scores revealed good discrimination for hospital mortality: (AUC) ROC values (AUC: 0.711, 0.752 and 0.742 respectively; p=0.6). Calibration, estimated by the Hosmer-Lemeshow test, was adequate in all cases.Acute coronary syndrome, lactate serum values, SAPSII score and vasoactive inotropic score (VIS) were found to be independent predictors for mortality, upon ICU admission. With these variables, a specific prognostic indicator was developed (SAPS-2-LIVE), which improved predictive capability for mortality in our series (AUC) ROC, 0.825 (95% CI 0.752-0.89). Conclusion: In this contemporary CS cohort, the aforementioned scores have been shown to have good predictive ability for hospital mortality. These findings could contribute to a more accurate risk stratification in CS.(AU)


Assuntos
Humanos , Masculino , Índice de Gravidade de Doença , Mortalidade Hospitalar , Choque Cardiogênico/diagnóstico , Choque Cardiogênico/etiologia , Pacientes Internados , Unidades de Terapia Intensiva , Escores de Disfunção Orgânica , APACHE , Anestesiologia , Reanimação Cardiopulmonar
8.
Rev. Soc. Esp. Dolor ; 29(1): 8-15, Ene-Feb. 2022. graf, tab
Artigo em Espanhol | IBECS | ID: ibc-209619

RESUMO

Introducción: La técnica OFA (opioid free anaesthesia) se basa en una anestesia multimodal con menor uso de opioides, que consigue un adecuado control del dolor, con menor incidencias de náuseas y vómitos en el postoperatorio y mejora el pronóstico en los pacientes oncológicos.Pacientes y método:Estudio retrospectivo de casos de pacientes sometidos a cirugía mayor en el periodo de noviembre de 2018 a febrero de 2020. Objetivo principal: cuantificar tipo y dosis de opioide administrado en periodo intraoperatorio y en el postoperatorio inmediato. Objetivos secundarios: graduación del dolor en el postoperatorio y al alta a planta de hospitalización y presencia de náuseas/vómitos en el postoperatorio. Resultados: 157 pacientes fueron incluidos. El 29,9 % de los pacientes no precisaron ninguna dosis de opioide intraoperatorio. De los que sí la precisaron, un 72,7 % de los mismos solo necesitó morfina y a una dosis media de 3,3 mg (± 0,9); un 8,1 % solo recibieron fentanilo (dosis media de 110,1 mcg, ± 57,1), y un 19,2 % recibieron morfina y fentanilo (3,8 mg ± 1,2 y 90,4 mcg ± 62,4, respectivamente). En cuanto a la necesidad de opioide postoperatorio, solo el 31,7 % de los pacientes precisó su administración; de ellos ⅔ (33 pacientes) solo recibieron morfina (4,8 mg ± 2,6), 1/5 (10 pacientes) solo fentanilo (83,3 mcg ± 28,8) y el resto una combinación de fentanilo y morfina (140,6 mcg ± 119,4 y 8 mg ± 5,9, respectivamente).Respecto a la intensidad de dolor, el valor en la escala EVA a la llegada de los pacientes a la Reanimación tuvo un valor de 1,6 ± 1,9 y al alta de 0,3 ± 0,6. Solo dos pacientes tuvieron náuseas o vómitos.Conclusiones:El uso de una técnica OFA es factible en cirugía mayor y permite un adecuado control del dolor. La necesidad de opioides intravenosos, tanto en el intraoperatorio como en el postoperatorio, es menor cuando se realiza una técnica OFA.(AU)


Introduction: Opioid free anaesthesia is a new paradigm that focuses in multimodal analgesia with an opioid sparing approach that provides a good pain management, without nauseas nor vomiting and improves prognosis in oncological patients. Patients and method: Cases retrospective study of major surgery patients from november 2018 to february 2020. Main objective: type and dosage of opioid requeriments both in the intraoperatory and postoperative setting. Secondary objectives: pain level score cuantification at the end of the surgery and at leaving the postoperative recovery unit and incidence of nausea/vomiting. Results:157 patients were recruited. 29,9 % need no opioid intraoperatively. Those who requiered it, 72,7 % only needed morphine (3,3 mg ± 0,9), 8,1 % had to recieved fentanyl (110,1 mcg, ± 57,1) and 19,2 % need both morphine and fentanyl (3,8 mg ± 1,2 and 90,4 mcg ± 62,4). At the postoperative recovery unit, only 31,7 % precised opioids: ⅔ (33 patients) recieved morphine (4,8 mg ± 2,6), 1/5 (10 patients) only fentanyl (83,3 mcg ± 28,8) and the rest needed a combination of fentanyl and morphine (140,6 mcg ± 119,4 and 8 mg ± 5,9, respectively). Two of them have nausea or vomyting.Conclusions:An opioid free anaesthesia approach is feasible in major surgery patients and it achieves and adequate pain management. Opioid requeriments in such patients is less than in those who recieved a traditional base opioid analgesia protocol.(AU)


Assuntos
Humanos , Analgésicos Opioides , Pacientes , Período Intraoperatório , Analgésicos Opioides/administração & dosagem , Náusea e Vômito Pós-Operatórios , Espanha , Dor , Estudos Retrospectivos , Dor Pós-Operatória
9.
Rev. esp. cardiol. (Ed. impr.) ; 75(1): 60-66, ene. 2022. tab
Artigo em Espanhol | IBECS | ID: ibc-206936

RESUMO

Introducción y objetivos: El retrasplante cardiaco (ReTC) representa un tema controvertido actualmente. Nuestro objetivo es describir y analizar los resultados del ReTC en España. Métodos: Análisis retrospectivo del Registro Español de Trasplante Cardiaco de 1984 a 2018. Se recogieron datos sobre donante, receptor, cirugía, inmunosupresión y supervivencia. La mortalidad por todas las causas o la necesidad de ReTC postrasplante fueron el objetivo principal. Se estudiaron diferencias en supervivencia según indicación, tiempo entre trasplantes y época del ReTC. Resultados: Se estudiaron en total 7.592 trasplantes cardiacos (TxC) y 173 (2,3%) ReTC (mediana de edad, 52,0 y 55,0 años respectivamente). La enfermedad vascular del injerto fue la indicación de ReTC más frecuente (42,2%) y 59 pacientes (80,8%) recibieron el ReTC más de 5 años después del trasplante inicial. El rechazo agudo y el fallo primario del injerto disminuyeron como indicaciones durante el periodo estudiado. La insuficiencia renal, la hipertensión, la necesidad de ventilación mecánica o balón intraaórtico y la mayor duración de la isquemia fría fueron más frecuentes en el ReTC. La mediana de seguimiento del ReTC fue 5,8 años. El ReTC tuvo peor supervivencia que el TxC (HR ponderado=1,43; IC95%, 1,17-1,44; p<0,001). El rechazo agudo (HR=2,49; IC95%, 1,45-4,27; p<0,001) se relacionó con el peor resultado. El ReTC más allá de 5 años del trasplante inicial presagia resultados similares a los del TxC primario (HR ponderado=1,14; IC95%, 0,86-1,50; p<0,001). Conclusiones: El ReTC se asoció con mayor mortalidad que el TxC, especialmente por rechazo agudo. El pronóstico del ReTC realizado más de 5 años después es similar al del TxC primario (AU)


Introduction and objectives: Heart retransplantation (ReHT) is controversial in the current era. The aim of this study was to describe and analyze the results of ReHT in Spain. Methods: We performed a retrospective cohort analysis from the Spanish Heart Transplant Registry from 1984 to 2018. Data were collected on donors, recipients, surgical procedure characteristics, immunosuppression, and survival. The main outcome was posttransplant all-cause mortality or need for ReHT. We studied differences in survival according to indication for ReHT, the time interval between transplants and era of ReHT. Results: A total of 7592 heart transplants (HT) and 173 (2.3%) ReHT were studied (median age, 52.0 and 55.0 years, respectively). Cardiac allograft vasculopathy was the most frequent indication for ReHT (42.2%) and 59 patients (80.8%) received ReHT >5 years after the initial transplant. Acute rejection and primary graft failure decreased as indications over the study period. Renal dysfunction, hypertension, need for mechanical ventilation or intra-aortic balloon pump and longer cold ischemia time were more frequent in ReHT. Median follow-up for ReHT was 5.8 years. ReHT had worse survival than HT (weighted HR, 1.43; 95%CI, 1.17-1.44; P<.001). The indication of acute rejection (HR, 2.49; 95%CI, 1.45-4.27; P<.001) was related to the worst outcome. ReHT beyond 5 years after initial HT portended similar results as primary HT (weighted HR, 1.14; 95%CI, 0.86-1.50; P<.001). Conclusions: ReHT was associated with higher mortality than HT, especially when indicated for acute rejection. ReHT beyond 5 years had a similar prognosis to primary HT (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Transplante de Coração/estatística & dados numéricos , Reoperação/estatística & dados numéricos , Estatísticas não Paramétricas , Estudos Retrospectivos , Estudos de Coortes , Espanha
10.
Int J Organ Transplant Med ; 13(2): 51-62, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-37641734

RESUMO

Background: This study aims to evaluate the entire experience in heart-lung transplantation (HLTx) in a country of the European Union with 47 million inhabitants according to the etiologies that motivated the procedure. Methods: A retrospective study on 1,751 consecutive transplants (HLTx: 78) was performed from 1990 to 2020 in two centers. Overall survival, adjusted for clinical profile and etiological subgroups, was compared. 7 subgroups were considered: 1) Cardiomyopathy with pulmonary hypertension (CM + PH). 2) Eisenmenger syndrome. 3) Congenital heart disease (CHD). 4) Idiopathic pulmonary arterial hypertension (IPAH). 5) Cystic fibrosis. 6) Chronic obstructive pulmonary disease (COPD)/Emphysema. 7) Diffuse interstitial lung disease (ILD). Results: Early mortality was 44% and that of the rest of the follow-up was 31%. There were differences between HTLx and HTx in survival, also comparing groups with a similar clinical profile with propensity score (p= 0.04). Median survival was low in CM + PH (18 days), ILD (29 days) and CHD (114 days), intermediate in Eisenmenger syndrome (600 days), and longer in IPAH, COPD/Emphysema and cystic fibrosis. Conclusion: HLTx has a high mortality. The etiological analysis is of the utmost interest to make the most of the organs and improve survival.

11.
Sci Total Environ ; 806(Pt 4): 150909, 2022 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-34653474

RESUMO

Using reclaimed water to irrigate crops can be an important route for organic contaminants of emerging concern (CECs) to be introduced into agricultural production and thus find their way into the food chain. This work aims to establish accumulation models for the different parts of a crop (fruit/leaves/roots) and the soil of some of the most commonly detected CECs in reclaimed water, through field trials in greenhouses. For this, tomato plants were permanently irrigated under realistic agricultural conditions with a mixture of the selected compounds at approx. 1 µg/L. A total of 30 contaminants were analyzed belonging to different compound categories. A modified QuEChERS extraction method followed by liquid chromatography coupled to tandem mass spectrometry was the procedure used. The study revealed the presence of 21 target contaminants in the tomatoes, and 18 CECs in the leaves, roots, and soil. The average total concentration of pesticides detected in the tomatoes was 3 µg/kg f.w., whereas the average total load of pharmaceuticals was 5.8 µg/kg f.w. after three months, at the time of crop harvesting. The levels of pharmaceutical products and pesticides in the non-edible tissues were up to 3.5 and 2.1 µg/kg f.w., respectively, in the leaves and up to 89.3 and 31.3 µg/kg f.w., respectively, in the roots. In the case of the soil samples, the pesticide concentration found after crop harvesting was below 11.4 µg/kg d.w., and less than 3.0 µg/kg d.w. for pharmaceuticals. Overall, the concentration levels of CECs detected in the tomatoes, which were permanently irrigated with contaminated reclaimed water, do not pose a risk to human health via dietary intake.


Assuntos
Solanum lycopersicum , Poluentes Químicos da Água , Irrigação Agrícola , Cromatografia Líquida , Humanos , Espectrometria de Massas em Tandem , Águas Residuárias/análise , Água , Poluentes Químicos da Água/análise
12.
Mater Struct ; 54(5): 194, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34720657

RESUMO

Incorporating crumb rubber (CR) using the dry process, directly in the asphalt mixture rather than into the bituminous binder requires no plant retrofitting, and therefore is the most practical industrial method for CR incorporation into asphalt mixtures. Nevertheless, very few large scale studies have been conducted. This work uses a holistic approach and reports on the functional and environmental performance of asphalt mixtures with different concentrations of CR fabricated employing the dry process in asphalt plants. Gaseous emissions were monitored during the production and laboratory leaching tests simulating the release of pollutants during rain, was conducted to evaluate the toxicology of both the CR material alone and the modified asphalt mixtures. In addition, laboratory compacted samples were tested to assess their fatigue behavior. Furthermore, noise relevant surface properties of large roller compacted slabs were evaluated before and after being subjected to a load simulator (MMLS3) to evaluate their resistance to permanent deformation. The results confirm that comparable performance can be achieved with the incorporation of CR using the dry process for high performance surfaces such as semi-dense asphalt, which usually require the use of polymer modified binders. Environmental performance improvement can be achieved by a washing step of the CR material that could remove polar CR additives which have commonly been used as vulcanization accelerator during rubber production.

13.
Anal Methods ; 13(36): 4131-4142, 2021 09 23.
Artigo em Inglês | MEDLINE | ID: mdl-34554152

RESUMO

In this study, we aimed to validate and apply a quick and easy extraction method for the simultaneous determination of 27 pesticide residues at trace levels in agricultural samples (soil, fruit, and leaf) to monitor the presence of these contaminants released from reclaimed water. The procedure was based on a salting-out extraction method with acidified acetonitrile, followed by a dispersive solid-phase extraction (d-SPE) clean-up step applying the C18 sorbent. Ultra-performance liquid chromatography coupled with electrospray tandem mass spectrometry (LC-MS/MS) was used for identification and quantification of the target analytes. This methodology provided recovery values higher than 70%, for all pesticides and matrices evaluated in the study, except for propamocarb in soil samples (35%). Repeatability and reproducibility results, calculated as relative standard deviations (RSD, %), ranged between 1% and 18% in both cases. No remarkable matrix effects were observed for vegetable samples, except for thiamethoxam in red cabbage, and hexythiazox in carrot and leaves (between 30 and 40%). Soil samples showed a moderate matrix effect (between 21 and 35%) for more than 80% of the compounds. Monitoring pesticide residues found in agricultural samples irrigated with contaminated reclaimed water under controlled conditions revealed the efficacy of the proposed method. Three common vegetables were grown to evaluate the different migration and distribution rates in crops and soil. Pesticide accumulation in the different parts of the crop (soil, fruit, and leaves) and the potential human exposure to pesticides through daily intake were also discussed.


Assuntos
Resíduos de Praguicidas , Cromatografia Líquida , Humanos , Resíduos de Praguicidas/análise , Reprodutibilidade dos Testes , Espectrometria de Massas em Tandem , Água
14.
Transfus Clin Biol ; 28(3): 258-263, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33901640

RESUMO

OBJECTIVES: Blood transfusion is a key intervention for decreasing morbidity and mortality in many cases and, besides its importance, potentially fatal consequences of incompatible transfusion are a great risk to patients. This study evaluated the incidence and specificity of erythrocyte alloantibodies in multi-transfused patients enrolled at an important Regional Blood Center. MATERIALS/METHODS: This was a single-center retrospective cohort study that eveluated patients enrolled at a Regional Blood Center in a period of four years. A total of 29,128 patient samples were screened, out of which 79 (0.27%) were multiple-transfused patients with alloantibodies identified. RESULTS: The most common alloantibody found was anti-E (22.55%) followed by anti-D (14.71%), anti-C (5.88%), anti-c (5.88%), anti-e (1.96%) and anti-Cw (0.98%). We also identified combinations of alloantibodies (25.32%), 5.88% of which showed an IgG autoantibody isolated or combined with alloantibodies. The most frequent reason for the need of blood transfusion included cases of surgery, emergency and urgency (36.71%). CONCLUSIONS: A low rate of development of alloantibodies in multi-transfused patients was found, which could be a consequence of the implementation of red blood cell phenotyping for patients who may receive frequent transfusions, as in the case of some hematological neoplasms and hemoglobinopathies. However, the most common alloantibodies identified were against the Rh and/or Kell systems, with high clinical significance since both can cause delayed hemolytic transfusion reactions. Thus, the implementation of reliable antibody screening tests and the transfusion of phenotyped units for selected patients in all transfusion services represent important measures to increase transfusion safety.


Assuntos
Antígenos de Grupos Sanguíneos , Eritrócitos , Transfusão de Sangue , Humanos , Isoanticorpos , Estudos Retrospectivos
15.
Sci Total Environ ; 782: 146759, 2021 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-33838369

RESUMO

In this study, we aimed to develop and validate a quick, easy, and robust extraction method for the simultaneous determination of 30 organic contaminants of emerging concern (CECs) including some transformation products in soil samples. Three different extraction methods based on an ultrasonic cylindrical probe (UAE), a pressurized liquid extraction (PLE), and a QuEChERS method were compared. Ultra-performance liquid chromatography coupled with electrospray tandem mass spectrometry (LC-MS/MS) was used for identification and quantification of the target analytes. A modified QuEChERS method showed the best results in terms of extractability and accuracy. The extraction procedure developed provided adequate extraction performances (70% of the target analytes were recovered within a 70-99% range), with good repeatability and reproducibility (variations below 20%) and great sensitivity (LOQ < 0.1 ng/g in most cases). No matrix effects were observed for 70% of the compounds. Finally, the analytical methodology was applied in a pilot study where agricultural soil was irrigated with reclaimed water spiked with the contaminants under study. Of the 25 CECs added in irrigation water, a total of 13 pesticides and 5 pharmaceutical products were detected at concentration ranges from 0.1 to 1.2 ng/g (d.w) and from 0.1 to 2.0 ng/g (d.w), respectively.

16.
Chemosphere ; 275: 129935, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33667770

RESUMO

Petrographic and mineralogical analyses combined with sequential extractions and leaching experiments as a function of pH were performed on black clayey sediments fulfilling karsts in the Hydrogeological Experimental Site (HES) of Poitiers (France) to investigate the behavior of arsenic and selenium in a fractured limestone aquifer. Sequential extractions showed that arsenic is mainly associated with pyrite (about 35%) and secondary iron oxyhydroxides (around 13%), along with a substantial exchangeable fraction (about 13%). The soluble fraction and the fraction associated to organic matter are âˆ¼2% and ∼5%, respectively. The distribution of selenium is mainly pyritic (around 39%) or associated with organic matter (about 18%). Its association to secondary iron oxyhydroxides minerals is low (around 2%), whereas its soluble fraction is around 5%. SEM analyses revealed the presence of arsenic "hot spots" into euhedral pyrite crystals surrounded by a halo of iron oxyhydroxides resulting from their alteration, and both are enriched with arsenic. Selenium has a similar pyritic origin but after alteration, it is predominantly associated with organic matter. Despite different distributions, the leaching experiment as a function of pH showed that the mobilization of arsenic and selenium overlapped below pH 2 and above pH 8. The main differences were observed between pH 2 and 8 with a plateau at 5% of released selenium, whereas the amount of mobilized arsenic continuously decreased. The pH-dependence of both elements is attributed to the partial dissolution of pyrite in acidic conditions combined with desorption processes at higher pH values.


Assuntos
Arsênio , Água Subterrânea , Selênio , Poluentes Químicos da Água , Arsênio/análise , Carbonatos , França , Sedimentos Geológicos , Selênio/análise , Poluentes Químicos da Água/análise
17.
Mol Psychiatry ; 26(5): 1589-1605, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-32060413

RESUMO

Evaluation of expression profile in autism spectrum disorder (ASD) patients is an important approach to understand possible similar functional consequences that may underlie disease pathophysiology regardless of its genetic heterogeneity. Induced pluripotent stem cell (iPSC)-derived neuronal models have been useful to explore this question, but larger cohorts and different ASD endophenotypes still need to be investigated. Moreover, whether changes seen in this in vitro model reflect previous findings in ASD postmortem brains and how consistent they are across the studies remain underexplored questions. We examined the transcriptome of iPSC-derived neuronal cells from a normocephalic ASD cohort composed mostly of high-functioning individuals and from non-ASD individuals. ASD patients presented expression dysregulation of a module of co-expressed genes involved in protein synthesis in neuronal progenitor cells (NPC), and a module of genes related to synapse/neurotransmission and a module related to translation in neurons. Proteomic analysis in NPC revealed potential molecular links between the modules dysregulated in NPC and in neurons. Remarkably, the comparison of our results to a series of transcriptome studies revealed that the module related to synapse has been consistently found as upregulated in iPSC-derived neurons-which has an expression profile more closely related to fetal brain-while downregulated in postmortem brain tissue, indicating a reliable association of this network to the disease and suggesting that its dysregulation might occur in different directions across development in ASD individuals. Therefore, the expression pattern of this network might be used as biomarker for ASD and should be experimentally explored as a therapeutic target.


Assuntos
Transtorno do Espectro Autista , Células-Tronco Pluripotentes Induzidas , Transtorno do Espectro Autista/genética , Humanos , Neurônios , Proteômica , Transcriptoma/genética
18.
Eur J Sport Sci ; 21(4): 481-496, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32297547

RESUMO

In professional soccer, increasing amounts of data are collected that harness great potential when it comes to analysing tactical behaviour. Unlocking this potential is difficult as big data challenges the data management and analytics methods commonly employed in sports. By joining forces with computer science, solutions to these challenges could be achieved, helping sports science to find new insights, as is happening in other scientific domains. We aim to bring multiple domains together in the context of analysing tactical behaviour in soccer using position tracking data. A systematic literature search for studies employing position tracking data to study tactical behaviour in soccer was conducted in seven electronic databases, resulting in 2338 identified studies and finally the inclusion of 73 papers. Each domain clearly contributes to the analysis of tactical behaviour, albeit in - sometimes radically - different ways. Accordingly, we present a multidisciplinary framework where each domain's contributions to feature construction, modelling and interpretation can be situated. We discuss a set of key challenges concerning the data analytics process, specifically feature construction, spatial and temporal aggregation. Moreover, we discuss how these challenges could be resolved through multidisciplinary collaboration, which is pivotal in unlocking the potential of position tracking data in sports analytics.


Assuntos
Desempenho Atlético/estatística & dados numéricos , Big Data , Análise de Dados , Futebol/estatística & dados numéricos , Gerenciamento de Dados , Humanos , Informática
19.
Br J Oral Maxillofac Surg ; 59(3): 362-367, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33358030

RESUMO

We used finite element analysis to assess stress on the cortical bone and plate fixation system, as well as mandibular resistance after sagittal split ramus osteotomy with different mandibular advancements and rotations of the occlusal plane. Three-dimensional mandibular models were obtained, and 6mm and 12mm advancements were planned associated with linear, clockwise, and counter-clockwise rotation of the angle of the occlusal plane. Each model was then fixed with one or two 2.0mm system plates and secured with four monocortical screws. A total of 12 models were built and subjected to a vertical load in the lower central incisor ranging from 50N to 500N in 50N increments. Results showed that the 12mm advancement was associated with higher stress on the bone and plate surface. Additionally, the models fixed with two plates exhibited lower plate stress than those fixed with a single plate. Counter-clockwise rotation of the angle of the mandibular plane in the 6mm advancement caused more plate stress, which did not occur in the 12mm advancement. This analysis has shown that change in the occlusal plane in large mandibular advancements does not act as an additional stress factor. These findings can help to better understand the tensions on bone and plate surfaces in patients who need large mandibular advancements that are associated with a change in the occlusal plane, and will aid better surgical planning.


Assuntos
Avanço Mandibular , Fenômenos Biomecânicos , Placas Ósseas , Parafusos Ósseos , Oclusão Dentária , Análise de Elementos Finitos , Humanos , Mandíbula/cirurgia , Osteotomia Sagital do Ramo Mandibular
20.
Rev. int. med. cienc. act. fis. deporte ; 20(80): 553-562, dic. 2020. tab
Artigo em Espanhol | IBECS | ID: ibc-198572

RESUMO

Los objetivos de este trabajo son determinar y analizar las lesiones y los hábitos más frecuentes en triatletas durante el desarrollo de una prueba. Se trata de un estudio descriptivo, observacional, transversal y retrospectivo. La muestra la componen 84 participantes (76 hombres y 8 mujeres) que participaron en el XVII Triatlón de Sevilla (Categorías Super Sprint, Sprint y Olímpica). Se pasaron dos cuestionarios, uno antes y otro posterior a la prueba, en los que se registraron entre otras las variables: antecedentes de lesiones deportivas, tratamientos previos, incidencias y lesiones ocurridas durante la prueba, etc. Los triatletas sufren una alta incidencia de lesiones podológicas dérmicas durante la práctica deportiva, el 65% sufrió lesión en el pie, de las que 27,5% fueron ampollas y el 30% fueron heridas. El 72,4% de los participantes en la distancia Olímpica presentó ampollas en los pies. El 50% de los participantes sufrieron lesiones deportivas a lo largo de su trayectoria como triatleta, siendo el pie, la rodilla y la pierna, las zonas más lesionadas. Según estos datos es necesario desarrollar un Programa de Salud podológica para triatletas


The objectives of this study are to determine and analyze the most frequent injuries and habits of triathletes during the development of a test. It is a descriptive, observational, transversal and retrospective study. The sample is composed of 84 participants (76 men and 8 women). Two questionnaires were administered, pre and post test, and recorded: history of sports injuries, previous treatments, injuries during the test, etc. Triathletes suffer a high incidence of dermal foot injuries during sports practice. 88% of adults and 90% of young people suffered sports-related injuries. In terms of previous foot care, the most common reason for podiatric consultation was foot orthoses; 25% and 80% of the youngsters and adults, respectively, received advice on the care of their feet. According to these data, it is necessary to implement a foot care program for triathletes


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Traumatismos em Atletas/epidemiologia , Hábitos , Atletas/estatística & dados numéricos , Dermatopatias/epidemiologia , Doenças do Pé/epidemiologia , Estudos Transversais , Estudos Retrospectivos , Doenças do Pé/prevenção & controle , Dermatopatias/prevenção & controle , Natação , Corrida , Epidemiologia Descritiva
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...