Evaluation of cleaning and disinfection procedures against Samonella enterica at swine farms, transport and lairage facilities

Evaluation of the cleaning and disinfection protocols effectiveness against Salmonella in three points of the pork production chain: finishing farm, transport and lairage. A 22.2% of the farms, 62.5% of the slaughter trucks and 63.6% of the holding pens tested were positive to Salmonella after cleaning and disinfection procedures

Hallazgos histopatológicos en corazón, pulmones y cerebro de ratones expuestos a óxidos de plomo (greta) por vía cutánea.

Introducción: México es un país con grandes depósitos naturales de plomo y se estima que el mundo genera alrededor de 12 a 130,000 toneladas/año y su principal vía de introducción al ambiente es por la atmósfera. El propósito del presente trabajo es identificar si existen lesiones en corazón, pulmones y cerebro después de una exposición cutánea al plomo en ratones.   Material y Métodos: Se seleccionaron 40 ratones sanos: 24 machos y 16 hembras; se les aplicó óxido de plomo (GRETA) por vía cutánea y las dosis fueron de 2,4, 6,8 y 10 mg de óxido de plomo. Se aplicó diario de lunes a sábado, estableciendo 5 lotes de 8 ratones en cada grupo; más un grupo control también de 8 ratones. Cada semana se sacrificó un ratón al azar de cada grupo y 5 ratones fallecieron antes de concluir el experimento. De cada órgano se consignó su coloración, tamaño, aspecto externo, fragilidad del tejido en general, tiempo de exposición al plomo y cambios histopatológicos en los tejidos.   Resultados: En los 40 ratones expuestos se presentó congestión pulmonar en grado moderado, en 33 de ellos (82%) se encontró edema pulmonar de tipo no cardiogénico y en 1 existió coágulo de fibrina. En corazón se presentó congestión vascular moderada en el 97% de los ratones (39 de ellos) y en el 5% (2 ratones) se encontró necrosis leve. En el cerebro las alteraciones fueron edema en todos los ratones expuestos, con necrosis neuronal  en el 88% (35 ratones) y gliosis neuronal reactiva en el 10% (4 ratones), con estas alteraciones los ratones perdieron coordinación en sus movimientos.   Discusión: El presente trabajo mostró que el plomo aplicado por vía cutánea es capaz de absorberse. La mayoría de los mecanismos de toxicidad del plomo han sido estudiados en procesos bioquímicos y afectan sobre todo enzimas en procesos celulares. La frecuencia y la severidad de los síntomas médicos se relaciona con la concentración de plomo en la sangre.   Conclusiones: Por la piel la entrada del plomo inorgánico es mínima, pero el plomo orgánico pasa a través de los folículos pilosos, glándulas sebáceas y sudoríparas directo al torrente sanguíneo. El plomo constituye una parte importante de la contaminación ambiental, el empleo de este metal en la industria, hacen necesario que se controle el impacto negativo de sus acciones tanto en la salud de los seres humanos como en el ambiente.Introducción: México es un país con grandes depósitos naturales de plomo y se estima que el mundo genera alrededor de 12 a 130,000 toneladas/año y su principal vía de introducción al ambiente es por la atmósfera. El propósito del presente trabajo es identificar si existen lesiones en corazón, pulmones y cerebro después de una exposición cutánea al plomo en ratones.   Material y Métodos: Se seleccionaron 40 ratones sanos: 24 machos y 16 hembras; se les aplicó óxido de plomo (GRETA) por vía cutánea y las dosis fueron de 2,4, 6,8 y 10 mg de óxido de plomo. Se aplicó diario de lunes a sábado, estableciendo 5 lotes de 8 ratones en cada grupo; más un grupo control también de 8 ratones. Cada semana se sacrificó un ratón al azar de cada grupo y 5 ratones fallecieron antes de concluir el experimento. De cada órgano se consignó su coloración, tamaño, aspecto externo, fragilidad del tejido en general, tiempo de exposición al plomo y cambios histopatológicos en los tejidos.   Resultados: En los 40 ratones expuestos se presentó congestión pulmonar en grado moderado, en 33 de ellos (82%) se encontró edema pulmonar de tipo no cardiogénico y en 1 existió coágulo de fibrina. En corazón se presentó congestión vascular moderada en el 97% de los ratones (39 de ellos) y en el 5% (2 ratones) se encontró necrosis leve. En el cerebro las alteraciones fueron edema en todos los ratones expuestos, con necrosis neuronal  en el 88% (35 ratones) y gliosis neuronal reactiva en el 10% (4 ratones), con estas alteraciones los ratones perdieron coordinación en sus movimientos.   Discusión: El presente trabajo mostró que el plomo aplicado por vía cutánea es capaz de absorberse. La mayoría de los mecanismos de toxicidad del plomo han sido estudiados en procesos bioquímicos y afectan sobre todo enzimas en procesos celulares. La frecuencia y la severidad de los síntomas médicos se relaciona con la concentración de plomo en la sangre.   Conclusiones: Por la piel la entrada del plomo inorgánico es mínima, pero el plomo orgánico pasa a través de los folículos pilosos, glándulas sebáceas y sudoríparas directo al torrente sanguíneo. El plomo constituye una parte importante de la contaminación ambiental, el empleo de este metal en la industria, hacen necesario que se controle el impacto negativo de sus acciones tanto en la salud de los seres humanos como en el ambiente

Impact of statin therapy on coronary plaque composition: A systematic review and meta-analysis of virtual histology intravascular ultrasound studies

Background: Virtual histology intravascular ultrasound (VH-IVUS) imaging is an innovative tool for the morphological evaluation of coronary atherosclerosis. Evidence for the effects of statin therapy on VH-IVUS parameters have been inconclusive. Consequently, we performed a systematic review and meta-analysis to investigate the impact of statin therapy on plaque volume and its composition using VH-IVUS. Methods: The search included PubMed, Cochrane Library, Scopus and Embase (through 30 November 2014) to identify prospective studies investigating the effects of statin therapy on plaque volume and its composition using VH-IVUS. Results: We identified nine studies with 16 statin treatment arms and 830 participants. There was a significant effect of statin therapy in reducing plaque volume (standardized mean difference (SMD): -0.137, 95 % confidence interval (CI): -0.255, -0.019; P = 0.023), external elastic membrane volume (SMD: -0.097, 95 % CI: -0.183, -0.011; P = 0.027) but not lumen volume (SMD: -0.025, 95 % CI: -0.110, +0.061; P = 0.574). There was a significant reduction in fibrous plaque volume (SMD: -0.129, 95 % CI: -0.255, -0.003; P = 0.045) and an increase of dense calcium volume (SMD: +0.229, 95 % CI: +0.008, +0.450

Predictors of Global Non-Motor Symptoms Burden Progression in Parkinson's Disease. Results from the COPPADIS Cohort at 2-Year Follow-Up

Malaltia de Parkinson; Símptomes no motors; ProgressióEnfermedad de Parkinson; Sintomas no motores; ProgresiónParkinson’s disease; Non-motor symptoms; ProgressionBackground and Objective: Non-motor symptoms (NMS) progress in different ways between Parkinson’s disease (PD) patients. The aim of the present study was to (1) analyze the change in global NMS burden in a PD cohort after a 2-year follow-up, (2) to compare the changes with a control group, and (3) to identify predictors of global NMS burden progression in the PD group. Material and Methods: PD patients and controls, recruited from 35 centers of Spain from the COPPADIS cohort from January 2016 to November 2017, were followed-up with after 2 years. The Non-Motor Symptoms Scale (NMSS) was administered at baseline (V0) and at 24 months ± 1 month (V2). Linear regression models were used for determining predictive factors of global NMS burden progression (NMSS total score change from V0 to V2 as dependent variable). Results: After the 2-year follow-up, the mean NMS burden (NMSS total score) significantly increased in PD patients by 18.8% (from 45.08 ± 37.62 to 53.55 ± 42.28; p < 0.0001; N = 501; 60.2% males, mean age 62.59 ± 8.91) compared to no change observed in controls (from 14.74 ± 18.72 to 14.65 ± 21.82; p = 0.428; N = 122; 49.5% males, mean age 60.99 ± 8.32) (p < 0.0001). NMSS total score at baseline (β = −0.52), change from V0 to V2 in PDSS (Parkinson’s Disease Sleep Scale) (β = −0.34), and change from V0 to V2 in NPI (Neuropsychiatric Inventory) (β = 0.25) provided the highest contributions to the model (adjusted R-squared 0.41; Durbin-Watson test = 1.865). Conclusions: Global NMS burden demonstrates short-term progression in PD patients but not in controls and identifies worsening sleep problems and neuropsychiatric symptoms as significant independent predictors of this NMS progression.This research was funded by Fundación Española de Ayuda a la Investigación en Parkinson y otras Enfermedades Neuro-degenerativa

Microvascular cutaneous coverage in wounds that expose the Achilles tendon: case report

Achilles tendon rupture, being one of the main tendon ruptures present, surgery being the most favourable option even taking into account complications such as infections and skin necrosis, it is necessary to develop techniques which help to reduce complications and increase benefits. The methods follow-up of 2 cases of patients with skin defects in the region of the Achilles tendon in patients who were treated at the "Luis Guillermo lbarra lbarra" national rehabilitation institute during the period 2020-2021 in the Traumatology service, treated with radial free flap forearm, using the description of the most used flaps in the literature. Results in both cases integrity of the free radial forearm flap in its entirety, functional recovery for walking, ability to put shoes back on, and without the need for reoperation, as well as a high level of satisfaction by patients. Conclusions if we are talking about an Achilles tendon rupture with a significant skin defect, the free radial forearm flap is an adequate option, if we are talking about a complete defect, the composite flap is the best option, remember that the decision on what type of flap will be used will depend on of the size of the lesion

Metabolomic profile of cancer stem cell-derived exosomes from patients with malignant melanoma

Malignant melanoma (MM) is the most aggressive and life-threatening form of skin cancer. It is characterized by an extraordinary metastasis capacity and chemotherapy resistance, mainly due to melanoma cancer stem cells (CSCs). To date, there are no suitable clinical diagnostic, prognostic or predictive biomarkers for this neoplasia. Therefore, there is an urgent need for new MM biomarkers that enable early diagnosis and effective disease monitoring. Exosomes represent a novel source of biomarkers since they can be easily isolated from different body fluids. In this work, a primary patient-derived MM cell line enriched in CSCs was characterized by assessing the expression of specific markers and their stem-like properties. Exosomes derived from CSCs and serums from patients with MM were characterized, and their metabolomic profile was analysed by highresolution mass spectrometry (HRMS) following an untargeted approach and applying univariate and multivariate statistical analyses. The aim of this study was to search potential biomarkers for the diagnosis of this disease. Our results showed significant metabolomic differences in exosomes derived from MM CSCs compared with those from differentiated tumour cells and also in serum-derived exosomes from patients with MM compared to those from healthy controls. Interestingly, we identified similarities between structural lipids differentially expressed in CSC-derived exosomes and those derived from patients with MM such as the glycerophosphocholine PC 16:0/0:0. To our knowledge, this is the first metabolomic-based study aimed at characterizing exosomes derived from melanoma CSCs and patients’ serum in order to identify potential biomarkers for MM diagnosis. We conclude that metabolomic characterization of CSC-derived exosomes sets an open door to the discovery of clinically useful biomarkers in this neoplasia.MICIU FPU15/03682 FPU15/02350Ministerio de Ciencia, Innovación y Universidades (MICIU) MAT2015-62644.C2.2.R RTI2018-101309-BC2Instituto de Salud Carlos III PIE16-00045Junta de Andalucía SOMM17/6109/UGR (UCE-PP2017-3)European Union (EU) SOMM17/6109/UGR (UCE-PP2017-3)Chair 'Doctors Galera-Requena in cancer stem cell research' CMC-CTS963Fundación MEDIN

Neuropathological findings in fatal COVID-19 and their associated neurological clinical manifestations

9 p.Severe cases of Coronavirus Disease 2019 (COVID-19) can present with multiple neurological symptoms. The available neuropathological studies have described different lesions; the most frequent was the presence of neuroinflammation and vascular-related lesions. The objective of this study was to report the neuropathological studies performed in a medical institution, with abundant long intensive care unit stays, and their associated clinical manifestations. This is a retrospective monocentric case series study based on the neuropathological reports of 13 autopsies with a wide range of illness duration (13-108 days). A neuroinflammatory score was calculated based on the quantification of CD8- and CD68-positive cells in representative areas of the central nervous system. This score was correlated afterwards with illness duration and parameters related to systemic inflammation. Widespread microglial and cytotoxic T-cell activation was found in all patients. There was no correlation between the neuroinflammatory score and the duration of the illness; nor with parameters of systemic inflammation such as the peak of IL-6 or the HScore (a parameter of systemic macrophage activation syndrome). Two patients had global hypoxic ischaemic damage and five patients had subacute infarcts. One patient had many more brain vascular microthrombi compared to the others and multiple subacute pituitary infarcts. SARS-CoV-2 RNA was not detected with qRT-PCR. The proportion of brain lesions in severe COVID-19 patients could be related to illness duration. In our series, with abundant long hospitalisation stays, neuroinflammation was present in all patients and was more prominent between day 34 and day 45 after onset of symptoms. Clinical correlation showed that two patients with the highest neuroinflammatory scores had severe encephalopathies that were not attributable to any other cause. The second most frequent lesions were related to vascular pathology.Instituto de Salud Carlos IIICIBERONCInstituto Ramón y Cajal de Investigación SanitariaMerck, Sharp & Dohme (MSD

Glycated Hemoglobin and Subclinical Atherosclerosis in People Without Diabetes.

The metabolic injury caused by protein glycation, monitored as the level of glycated hemoglobin (HbA1c), is not represented in most risk scores (i.e., Systematic Coronary Risk Estimation or atherosclerotic cardiovascular disease risk scale). The purpose of this study was to assess the association between HbA1c and the extent of subclinical atherosclerosis (SA) and to better identify individuals at higher risk of extensive SA using HbA1c on top of key cardiovascular risk factors (CVRFs). A cohort of 3,973 middle-aged individuals from the PESA (Progression of Early Subclinical Atherosclerosis) study, with no history of cardiovascular disease and with HbA1c in the nondiabetic range, were assessed for the presence and extent of SA by 2-dimensional vascular ultrasound and noncontrast cardiac computed tomography. After adjusting for established CVRFs, HbA1c showed an association with the multiterritorial extent of SA (odds ratio: 1.05, 1.27, 1.27, 1.36, 1.80, 1.87, and 2.47 for HbA1c 4.9% to 5.0%, 5.1% to 5.2%, 5.3% to 5.4%, 5.5% to 5.6%, 5.7% to 5.8%, 5.9% to 6.0%, and 6.1% to 6.4%, respectively; reference HbA1c ≤4.8%; p < 0.001). The association was significant in all pre-diabetes groups and even below the pre-diabetes cut-off (HbA1c 5.5% to 5.6% odds ratio: 1.36 [95% confidence interval: 1.03 to 1.80]; p = 0.033). High HbA1c was associated with an increased risk of SA in low-risk individuals (p < 0.001), but not in moderate-risk individuals (p = 0.335). Relative risk estimations using Systematic Coronary Risk Estimation or atherosclerotic cardiovascular disease predictors confirmed that inclusion of HbA1c modified the risk of multiterritorial SA in most risk categories. Routine use of HbA1c can identify asymptomatic individuals at higher risk of SA on top of traditional CVRFs. Lifestyle interventions and novel antidiabetic medications might be considered to reduce both HbA1c levels and SA in individuals without diabetes.The PESA study is funded by the Centro Nacional de Investigaciones Cardiovasculares (CNIC) and Banco Santander. The study also receives funding from the Instituto de Salud Carlos III (ISCIII, PI15/ 02019, PI17/00590, and PI20/00819) and the European Regional Development Fund (ERDF) “A way to make Europe.” The CNIC is supported by the ISCIII, the Ministerio de Ciencia e Innovación, and the Pro CNIC Foundation. Dr. Bueno has received grants from the Instituto de Salud Carlos III; has received consultancy fees from Bayer, Novartis, Ferrer, MEDSCAPE-the Heart-org, and Janssen; has received grants, consultancy fees, and nonfinancial support from AstraZeneca; and has received grants and consultancy fees from Bristol Myers Squibb-Pfizer, all unrelated to the present study. Dr. Ibanez is supported by the European Commission (ERC-CoG grant No 819775), the Spanish Ministry of Science and Innovation (MCN, ‘RETOS 2019’ grant No PID2019-107332RB-I00), and the Comunidad de Madrid (S2017/BMD-3867 RENIM-CM). The funders had no role in the design and conduct of the study; the collection, management, analysis, and interpretation of the data; the preparation, review, or approval of the manuscript; or the decision to submit the manuscript for publication. All other authors have reported that they have no relationships relevant to the contents of this paper to disclose.S

Integrated assessment of the impact of climate and land use changes on groundwater quantity and quality in the Mancha Oriental system (Spain)

[EN] Climate and land use change (global change) impacts on groundwater systems cannot be studied in isolation. Land use and land cover (LULC) changes have a great impact on the water cycle and contaminant production and transport. Groundwater flow and storage are changing in response not only to climatic changes but also to human impacts on land uses and demands, which will alter the hydrologic cycle and subsequently impact the quantity and quality of regional water systems. Predicting groundwater recharge and discharge conditions under future climate and land use changes is essential for integrated water management and adaptation. In the Mancha Oriental system (MOS), one of the largest groundwater bodies in Spain, the transformation from dry to irrigated lands during the last decades has led to a significant drop of the groundwater table, with the consequent effect on stream-aquifer interaction in the connected Jucar River. Understanding the spatial and temporal distribution of water quantity and water quality is essential for a proper management of the system. On the one hand, streamflow depletion is compromising the dependent ecosystems and the supply to the downstream demands, provoking a complex management issue. On the other hand, the intense use of fertilizer in agriculture is leading to locally high groundwater nitrate concentrations. In this paper we analyze the potential impacts of climate and land use change in the system by using an integrated modeling framework that consists in sequentially coupling a watershed agriculturally based hydrological model (Soil and Water Assessment Tool, SWAT) with a groundwater flow model developed in MODFLOW, and with a nitrate mass-transport model in MT3DMS. SWAT model outputs (mainly groundwater recharge and pumping, considering new irrigation needs under changing evapotranspiration (ET) and precipitation) are used as MODFLOW inputs to simulate changes in groundwater flow and storage and impacts on stream-aquifer interaction. SWAT and MODFLOW outputs (nitrate loads from SWAT, groundwater velocity field from MODFLOW) are used as MT3DMS inputs for assessing the fate and transport of nitrate leached from the topsoil. Three climate change scenarios have been considered, corresponding to three different general circulation models (GCMs) for emission scenario A1B that covers the control period, and short-, medium-and long-term future periods. A multi-temporal analysis of LULC change was carried out, helped by the study of historical trends (from remote-sensing images) and key driving forces to explain LULC transitions. Markov chains and European scenarios and projections were used to quantify trends in the future. The cellular automata technique was applied for stochastic modeling future LULC maps. Simulated values of river discharge, crop yields, groundwater levels and nitrate concentrations fit well to the observed ones. The results show the response of groundwater quantity and quality (nitrate pollution) to climate and land use changes, with decreasing groundwater recharge and an increase in nitrate concentrations. The sequential modeling chain has been proven to be a valuable assessment tool for supporting the development of sustainable management strategies.This study was partially funded by the EU FP7 GENESIS project (no. 226.536) on groundwater systems, the Plan Nacional de I+D+I 2008-2011 of the Ministry of Science and Innovation of Spain (projects CGL2009-13238-C02-01/02 on climate change impacts and adaptation), and the IMPADAPT project (CGL2013-48424-C2-1-R) with Spanish MINECO (Ministerio de Economia y Competitividad) and Feder funds. 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