RESUMEN
Agricultural systems tend to be characterised by large diversity, therefore, solving socio-economic and environmental problems in agriculture requires targeted and contextualised policies. However, policies often fail to recognize this heterogeneity in their design or implementation. This can result in the use of sector-wide characteristics and, consequently, generic policies that are not tailored to specific farming systems. In this context, farm typologies can be a useful tool, as they help to identify differences and commonalities in highly heterogeneous groups. In this study, we focused on the Irish beef and sheep farming sectors and used a wide range of structural, socio-economic, and environmental indicators to develop a farm typology. This resulted in the identification of six distinct farm types: Small Cattle Farms, Extensive Sheep Farms, Medium-size Sheep Farms, Medium-size Cattle Farms, Medium-size Mixed Farms, and Intensive Cattle Farms. We then analysed the socio-economic and environmental performance of these six farm types and discussed the potential variation of the implementation and impact of currently proposed policies and interventions among farm types. We argue that failing to consider different farm types within policies can make their farm-level implementation unsuccessful and thus hinder the achievement of sector-wide sustainability goals. The approach we developed in this manuscript could also be applicable to other sectors and locations, and could help guide the design of more successful targeted policies.
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Agricultura , Granjas , Animales , Bovinos , Ovinos , Conservación de los Recursos Naturales/métodos , Crianza de Animales DomésticosRESUMEN
BACKGROUND: Controversy has recently broken out over the potential carcinogenic risk associated with exposure to UV lamps for permanent nail polish. The new LED-based polymerization devices, and their potential biological effect has not been analyzed to this date. OBJECTIVE: To evaluate the emission power and its potential biological effects on the skin of 2 types of UV LED and fluorescent curing lamps under normal use conditions compared to doses of sunlight exposure. MATERIAL AND METHODS: The emission spectrum (290nm to 450nm) of curing lamps and the Sun at noon on an average summer day in mid-latitude Spain was analyzed. The effective biological irradiance potential for erythema, non-melanoma skin cancer, DNA damage, photoimmunosuppression and permanent pigmentation was also characterized. RESULTS: The high-energy UVA-visible irradiance emitted by these devices was similar to the one coming from the Sun in that spectral range while the effective biological doses were lower or similar to those also coming from the Sun. The total UV and high-energy visible dose per manicure session corresponded to that obtained from 3.5min to 6min exposures to the Sun at noon in the summer days at our latitudes. CONCLUSIONS: The exposure times and doses received with the common use of artificial lamp nail drying correspond to sunlight exposures of 3min to 5min in the central hours of the day. This represents a very low carcinogenic potential compared to sunlight exposure, although similar regarding immunosuppressive potential. Photoprotective measures would further minimize the risks.
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Uñas , Neoplasias Inducidas por Radiación , Neoplasias Cutáneas , Rayos Ultravioleta , Rayos Ultravioleta/efectos adversos , Humanos , Uñas/efectos de la radiación , Neoplasias Cutáneas/etiología , Neoplasias Cutáneas/epidemiología , Neoplasias Inducidas por Radiación/etiología , Neoplasias Inducidas por Radiación/epidemiología , Luz Solar/efectos adversos , Daño del ADN , España , Eritema/etiologíaRESUMEN
BACKGROUND: Controversy has recently broken out over the potential carcinogenic risk associated with exposure to UV lamps for permanent nail polish. The new LED-based polymerization devices, and their potential biological effect has not been analyzed to this date. OBJECTIVE: To evaluate the emission power and its potential biological effects on the skin of 2 types of UV LED and fluorescent curing lamps under normal use conditions compared to doses of sunlight exposure. MATERIAL AND METHODS: The emission spectrum (290nm to 450nm) of curing lamps and the Sun at noon on an average summer day in mid-latitude Spain was analyzed. The effective biological irradiance potential for erythema, non-melanoma skin cancer, DNA damage, photoimmunosuppression and permanent pigmentation was also characterized. RESULTS: The high-energy UVA-visible irradiance emitted by these devices was similar to the one coming from the Sun in that spectral range while the effective biological doses were lower or similar to those also coming from the Sun. The total UV and high-energy visible dose per manicure session corresponded to that obtained from 3.5min to 6min exposures to the Sun at noon in the summer days at our latitudes. CONCLUSIONS: The exposure times and doses received with the common use of artificial lamp nail drying correspond to sunlight exposures of 3min to 5min in the central hours of the day. This represents a very low carcinogenic potential compared to sunlight exposure, although similar regarding immunosuppressive potential. Photoprotective measures would further minimize the risks.
Asunto(s)
Uñas , Neoplasias Inducidas por Radiación , Neoplasias Cutáneas , Rayos Ultravioleta , Rayos Ultravioleta/efectos adversos , Humanos , Uñas/efectos de la radiación , Neoplasias Cutáneas/etiología , Neoplasias Cutáneas/epidemiología , Neoplasias Inducidas por Radiación/etiología , Neoplasias Inducidas por Radiación/epidemiología , Luz Solar/efectos adversos , Daño del ADN , España , Eritema/etiologíaRESUMEN
PURPOSE: Recent studies point to adipose-derived stem cells (ASCs) as a link between obesity and cancer. We aimed to determine whether survivin, which is highly secreted by ASCs from subjects with obesity, might drive a pro-tumoral phenotype in macrophages. METHODS: The effect of ASC conditioned medium on the macrophage phenotype was assessed by expression studies. Survivin intracellular localization and internalization were examined by subcellular fractionation and immunofluorescence, respectively. Loss- and gain-of-function studies were performed using adenoviral vectors, and gene expression patterns, migration and invasion capacities of cancer cells were examined. Heterotypic cultures of ASCs, macrophages and cancer cells were established to mimic the tumor microenvironment. Survivin-blocking experiments were used to determine the impact of survivin on both macrophages and cancer cells. Immunohistochemical analysis of survivin was performed in macrophages from ascitic fluids of cancer patients and healthy controls. RESULTS: We found that obese-derived ASCs induced a phenotypic switch in macrophages characterized by the expression of both pro- and anti-inflammatory markers. Macrophages were found to internalize extracellular survivin, generating hybrid macrophages with a tumor-associated phenotype that included secretion of survivin. Exogenous expression of survivin in macrophages generated a similar phenotype and enhanced the malignant characteristics of cancer cells by a mechanism dependent on survivin phosphorylation at threonine 34. Survivin secreted by both ASCs from subjects with obesity and tumor-associated macrophages synergistically boosted the malignancy of cancer cells. Importantly, survivin was mainly detected in ascites-associated macrophages from patients with a malignant diagnosis. CONCLUSION: Our data indicate that survivin may serve as a molecular link between obesity and cancer and as a novel marker for tumor-associated macrophages.
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Neoplasias/genética , Obesidad/genética , Survivin/genética , Macrófagos Asociados a Tumores/metabolismo , Tejido Adiposo/citología , Células CACO-2 , Células Cultivadas , Perfilación de la Expresión Génica/métodos , Regulación Neoplásica de la Expresión Génica , Células HEK293 , Células HT29 , Células Hep G2 , Humanos , Neoplasias/metabolismo , Obesidad/metabolismo , Fenotipo , Células Madre/citología , Células Madre/metabolismo , Survivin/metabolismo , Células THP-1 , Microambiente Tumoral/genéticaRESUMEN
Syncope is a frequent disorder, sometimes due to life-threatening causes. The uncertainty in its diagnosis requires a standardized approach. According to the 2018 European Society of Cardiology (ESC) guidelines, new aspects in evaluation and treatment include risk stratification and decision-making strategies during the initial evaluation in the emergency department, a reconsideration of diagnostic tests, algorithms for the treatment of reflex syncope, indications for an implantable cardioverter/defibrillator in high risk patients for sudden cardiac death, and organizational aspects such as interdisciplinary syncope units. The 2018 ESC guideline and the 2019 commentaries of the German Society of Cardiology (DGK) are an excellent and comprehensive instruction for safe, effective and efficient evaluation and therapy. However, some aspects require critical appraisal. The inadequate availability and reimbursement of pivotal diagnostic tests, such as tilt table testing and the implantable loop recorder is emphasized.
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Estimulación Cardíaca Artificial/normas , Desfibriladores Implantables , Examen Físico/normas , Guías de Práctica Clínica como Asunto , Síncope/diagnóstico , Síncope/terapia , Cardiología/normas , Alemania , Humanos , Sociedades Médicas , Pruebas de Mesa InclinadaRESUMEN
Epidemiological studies link long term exposure to xenoestrogen Bisphenol-A to adverse cardiovascular effects. Our previous results show that BPA induces hypertension by a mechanism involving CamKII activation and increased redox stress caused by eNOS uncoupling. Recently, CamKII sustained activation has been recognized as a central mediator of programmed cell death in cardiovascular diseases, including necroptosis. However, the role of necroptosis in cardiac response to BPA had not yet been explored. Mice exposed to BPA for 16 weeks showed altered heart function, electrical conduction, and increased blood pressure. Besides, a stress test showed ST-segment depression, indicative of cardiac ischemia. The hearts exhibited cardiac hypertrophy and reduced vascularization, interstitial edema, and large hemorrhagic foci accompanied by fibrinogen deposits. BPA initiated a cardiac inflammatory response, up-regulation of M1 macrophage polarization, and increased oxidative stress, coinciding with the increased expression of CamKII and the necroptotic effector RIP3. In addition, cell death was especially evident in coronary endothelial cells within hemorrhagic areas, and Evans blue extravasation indicated a vascular leak in response to Bisphenol-A. Consistent with the in vivo findings, BPA increased the necroptosis/apoptosis ratio, the expression of RIP3, and CamKII activation in endothelial cells. Necrostatin-1, an inhibitor of necroptosis, alleviated BPA induced cardiac dysfunction and prevented the inflammatory and hemorrhagic response in mice. Mechanistically, silencing of RIP3 reversed BPA-induced necroptosis and CamKII activation in endothelial cells, while inhibition of CamKII activation by KN-93 had no effect on RIP3 expression but decreased necroptotic cell death suggesting that BPA induced necroptosis is mediated by a RIP 3/CamKII dependent pathway. Our results reveal a novel pathogenic role of BPA on the coronary circulation. BPA induces endothelial cell necroptosis, promotes the weakening of coronary vascular wall, which caused internal ventricular hemorrhages, delaying the reparative process and ultimately leading to cardiac dysfunction.
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Compuestos de Bencidrilo/toxicidad , Proteína Quinasa Tipo 2 Dependiente de Calcio Calmodulina/metabolismo , Necrosis/inducido químicamente , Fenoles/toxicidad , Proteína Serina-Treonina Quinasas de Interacción con Receptores/metabolismo , Animales , Apoptosis/efectos de los fármacos , Presión Sanguínea/efectos de los fármacos , Proteína Quinasa Tipo 2 Dependiente de Calcio Calmodulina/genética , Línea Celular , Células Cultivadas , Ecocardiografía , Electrocardiografía , Femenino , Inmunohistoquímica , Masculino , Ratones , Microscopía Confocal , Miocitos Cardíacos/efectos de los fármacos , Miocitos Cardíacos/metabolismo , Necroptosis/efectos de los fármacos , ARN Mensajero/metabolismo , Proteína Serina-Treonina Quinasas de Interacción con Receptores/genética , Transducción de Señal/efectos de los fármacosRESUMEN
Stimulants such as methylphenidate are increasingly used for cognitive enhancement but precise mechanisms are unknown. We found that methylphenidate boosts willingness to expend cognitive effort by altering the benefit-to-cost ratio of cognitive work. Willingness to expend effort was greater for participants with higher striatal dopamine synthesis capacity, whereas methylphenidate and sulpiride, a selective D2 receptor antagonist, increased cognitive motivation more for participants with lower synthesis capacity. A sequential sampling model informed by momentary gaze revealed that decisions to expend effort are related to amplification of benefit-versus-cost information attended early in the decision process, whereas the effect of benefits is strengthened with higher synthesis capacity and by methylphenidate. These findings demonstrate that methylphenidate boosts the perceived benefits versus costs of cognitive effort by modulating striatal dopamine signaling.
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Cognición/efectos de los fármacos , Cuerpo Estriado/metabolismo , Dopamina/metabolismo , Metilfenidato/farmacología , Motivación/efectos de los fármacos , Sulpirida/farmacología , Adolescente , Núcleo Caudado/metabolismo , Conducta de Elección , Toma de Decisiones , Dopamina/biosíntesis , Antagonistas de los Receptores de Dopamina D2/farmacología , Inhibidores de Captación de Dopamina/farmacología , Femenino , Fijación Ocular , Humanos , Masculino , Memoria , Recompensa , Movimientos Sacádicos , Transducción de Señal/efectos de los fármacos , Adulto JovenRESUMEN
Although the protumoral functions of polymorphonuclear neutrophils are well known, some now-forgotten studies report antitumoral roles for these cells. The present work examines the antitumoral effect of maintained neutrophilia induced via the injection of recombinant human granulocyte colony stimulating factor (rhG-CSF, 100 µg/kg/day) in a Panc-1 subcutaneous xenograft murine model of pancreatic cancer. This treatment was compared with gemcitabine administration (120 mg/kg every two days) and a saline control (n = 6-7 mice per group). Compared to the controls, both the rhG-CSF- and gemcitabine-treated mice showed significantly suppressed tumor growth by day 4 (p < 0.001 and p = 0.013 respectively). From a mean starting volume of 106.9 ± 3.1 mm3 for all treatment groups, the final mean tumor volumes reached were 282.0 ± 30.7 mm3 for the rhG-CSF-treated mice, 202.6 ± 18.1 mm3 for the gemcitabine-treated mice and 519.4 ± 62.9 mm3 for the control mice (p < 0.004 and p < 0.01, respectively, vs. control). The rhG-CSF-treated tumors showed higher percentage necrosis than those treated with gemcitabine (37.4 ± 4.6 vs. 7.5 ± 3.0; p < 0.001). This is the first report of a clear anti-tumoral effect of rhG-CSF when used in monotherapy against pancreatic cancer. Since rhG-CSF administration is known to be associated with very few adverse events, it may offer an attractive alternative in the clinical treatment of pancreatic cancer.
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Adenocarcinoma/tratamiento farmacológico , Desoxicitidina/análogos & derivados , Factor Estimulante de Colonias de Granulocitos/farmacología , Leucocitosis/inmunología , Neutrófilos/inmunología , Neoplasias Pancreáticas/tratamiento farmacológico , Adenocarcinoma/metabolismo , Adenocarcinoma/patología , Animales , Antimetabolitos Antineoplásicos/farmacología , Apoptosis , Proliferación Celular , Desoxicitidina/farmacología , Quimioterapia Combinada , Femenino , Humanos , Leucocitosis/inducido químicamente , Leucocitosis/patología , Ratones , Ratones Desnudos , Neutrófilos/efectos de los fármacos , Neutrófilos/patología , Neoplasias Pancreáticas/metabolismo , Neoplasias Pancreáticas/patología , Células Tumorales Cultivadas , Ensayos Antitumor por Modelo de Xenoinjerto , GemcitabinaRESUMEN
BACKGROUND: The rise in prevalence rates of Type 2 Diabetes among Indians is well recognized. The research focus has been primarily to understand the changes in insulin sensitivity and beta cell dysfunction among Indians with Type 2 Diabetes. However, no data are available on the role of peripheral tissue, in particular intramyocellular lipid (IMCL) content and its impact on glucose homeostasis among Indians with prediabetes. METHODS: 28 male subjects (20-40 year) were studied. 13 with prediabetes (BMI ranging from 25.4 ± 2.9 kg/m2) and 15 controls (BMI ranging from 24.6 ± 2.8 kg/m2) were recruited. Body composition by dual energy X-ray absorptiometry (DXA), insulin sensitivity, insulin secretion rates were derived using the minimal model of C-peptide secretion and kinetics rates and skeletal muscle strength of the lower limb (quadriceps) was assessed using Isokinetic dynamometry. From muscle biopsy samples of the vastus lateralis, IMCL fat content (Oil red O staining) was determined. RESULTS: The prediabetes group were older compared to controls (P < 0.01), but had similar BMI. The muscle to fat ratio, plasma Insulin, C peptide, HOMA-IR and HOMA % B were also comparable between the groups. IMCL fat content (%) was significantly higher in the prediabetes group compared to controls (7.0 ± 0.7% vs. 2.0 ± 0.3%, P < 0.01). This difference persisted even after controlling for age. Overall the IMCL fat content (%) was positively and significantly associated with HbA1c (r = 0.76, P < 0.01). HOMA-IR was significantly correlated with central (android, trunk) adiposity (kg) (r = 0.71, P < 0.01) but not with IMCL (%). CONCLUSIONS: This is the first direct evidence of existence of significantly higher lipid levels within skeletal muscle cells among normal and overweight young Indians with prediabetes. However, there was no association between IMCL and HOMA-IR among the prediabetes group.
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Tejido Adiposo/metabolismo , Composición Corporal , Músculo Esquelético/metabolismo , Sobrepeso/metabolismo , Estado Prediabético/metabolismo , Tejido Adiposo/patología , Adulto , Biopsia , Índice de Masa Corporal , Prueba de Tolerancia a la Glucosa , Humanos , India , Lípidos/análisis , Masculino , Fuerza Muscular , Músculo Esquelético/patología , Estado Prediabético/patologíaRESUMEN
Arterial hypertension represents one of the most frequent chronic diseases that can lead to complications, such as stroke, dementia, heart attack, heart failure and renal failure. By 2025 the number of hypertensive patients will increase to approximately 1.6 billion people worldwide. The new guidelines of the European Society of Cardiology (ESC) and the European Society of Hypertension (ESH) on the management of arterial hypertension replace the guidelines of the ESC/ESH from 2013. The 2018 guidelines of the ESC/ESH were adopted by the German Cardiac Society and the German Hypertension League. In these comments national characteristics are worked out and the essential new aspects of the guidelines are critically discussed. These include, for example, the definition of hypertension, the importance of out of office blood pressure measurements, revised blood pressure targets, the modified algorithm for drug treatment and the relevance of device-based hypertension treatments. Important aspects for the management of hypertensive emergencies are also presented.
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Cardiología , Hipertensión , Antihipertensivos , Presión Sanguínea , Determinación de la Presión Sanguínea , HumanosRESUMEN
OBJECTIVE: Recent data regarding the persistence or remittance of attention deficit-hyperactivity disorder (ADHD) diagnosis into adulthood raise the question of its possible role in crucial public health issues, including road safety, especially when neurocognitive capacities are challenged. METHODS: The study included 611 participants with serious traffic violations. The Spanish version of the Mini International Neuropsychiatric Interview (M.I.N.I.) was used to assess psychopathology. They were grouped into 3 diagnostic conditions: non-ADHD, persistent ADHD (ADHD-P), and remittent ADHD (ADHD-R). Several risky driving behaviors were analyzed. RESULTS: Although participants with ADHD have more driving violations relative to non-ADHD, ADHD-R, and ADHD-P drivers have similar profiles. ADHD-R and ADHD-P drivers are more prone to perform risky and recidivistic behaviors relative to non-ADHD counterparts (P = .044 and P = .047, respectively); ADHD-R and ADHD-P participants are statistically comparable in this proneness (P = .772). CONCLUSION: These results suggest that the underlying core deficits of ADHD-attention and other executive disabilities-persist despite the fact that some people no longer reach the threshold for clinical diagnosis.
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Trastorno por Déficit de Atención con Hiperactividad/psicología , Conducción de Automóvil/psicología , Reincidencia/estadística & datos numéricos , Asunción de Riesgos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Atención , Femenino , Humanos , Masculino , Persona de Mediana Edad , Salud Pública , Adulto JovenRESUMEN
Background: Maternal macronutrient intake is likely to play a pivotal role in fetoplacental growth. Male fetuses grow faster and their growth is more responsive to maternal size. Objective: We assessed the role of fetal sex in modifying the effect of maternal macronutrient intake on the risk of small-for-gestational-age (SGA) birth. Design: This was a prospective, observational cohort study of 2035 births from an urban South Asian Indian population. Maternal intakes of total energy and macronutrients were recorded by validated food-frequency questionnaires. The interaction of trimester 1 macronutrient intake with fetal sex was tested on the outcome of SGA births. Results: The prevalence of SGA was 28%. Trimester 1 macronutrient composition was high in carbohydrate and low in fat (means ± SDs-carbohydrate: 64.6% ± 5.1%; protein: 11.5% ± 1.1%; and fat: 23.9% ± 4.4% of energy). Higher carbohydrate and lower fat consumption were each associated with an increased risk of SGA [adjusted OR (AOR) per 5% of energy (95% CI): carbohydrate: 1.15 (1.01, 1.32); fat: 0.83 (0.71, 0.97)] specifically among male births (males: n = 1047; females: n = 988). Dietary intake of >70% of energy from carbohydrate was also associated with increased risk (AOR: 1.67; 95% CI: 1.00, 2.78), whereas >25% of energy from fat intake was associated with decreased risk (AOR: 0.61; 95% CI: 0.41, 0.90) of SGA in male births. Conclusions: Higher carbohydrate and lower fat intakes early in pregnancy were associated with increased risk of male SGA births. Therefore, we speculate that fetal sex acts as a modifier of the role of maternal periconceptional nutrition in optimal fetoplacental growth.
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Dieta , Carbohidratos de la Dieta/farmacología , Grasas de la Dieta/farmacología , Conducta Alimentaria , Desarrollo Fetal/efectos de los fármacos , Recién Nacido Pequeño para la Edad Gestacional/fisiología , Fenómenos Fisiologicos de la Nutrición Prenatal , Adulto , Registros de Dieta , Carbohidratos de la Dieta/administración & dosificación , Grasas de la Dieta/administración & dosificación , Ingestión de Energía , Femenino , Edad Gestacional , Humanos , Recién Nacido , Masculino , Nutrientes/administración & dosificación , Nutrientes/farmacología , Oportunidad Relativa , Embarazo , Primer Trimestre del Embarazo , Prevalencia , Estudios Prospectivos , Factores de Riesgo , Factores Sexuales , Adulto JovenRESUMEN
Mineral phosphorus (P) used to fertilise crops is derived from phosphate rock, which is a finite resource. Preventing and recycling mineral P waste in the food system, therefore, are essential to sustain future food security and long-term availability of mineral P. The aim of our modelling exercise was to assess the potential of preventing and recycling P waste in a food system, in order to reduce the dependency on phosphate rock. To this end, we modelled a hypothetical food system designed to produce sufficient food for a fixed population with a minimum input requirement of mineral P. This model included representative crop and animal production systems, and was parameterised using data from the Netherlands. We assumed no import or export of feed and food. We furthermore assumed small P soil losses and no net P accumulation in soils, which is typical for northwest European conditions. We first assessed the minimum P requirement in a baseline situation, that is 42% of crop waste is recycled, and humans derived 60% of their dietary protein from animals (PA). Results showed that about 60% of the P waste in this food system resulted from wasting P in human excreta. We subsequently evaluated P input for alternative situations to assess the (combined) effect of: (1) preventing waste of crop and animal products, (2) fully recycling waste of crop products, (3) fully recycling waste of animal products and (4) fully recycling human excreta and industrial processing water. Recycling of human excreta showed most potential to reduce P waste from the food system, followed by prevention and finally recycling of agricultural waste. Fully recycling P could reduce mineral P input by 90%. Finally, for each situation, we studied the impact of consumption of PA in the human diet from 0% to 80%. The optimal amount of animal protein in the diet depended on whether P waste from animal products was prevented or fully recycled: if it was, then a small amount of animal protein in the human diet resulted in the most sustainable use of P; but if it was not, then the most sustainable use of P would result from a complete absence of animal protein in the human diet. Our results apply to our hypothetical situation. The principles included in our model however, also hold for food systems with, for example, different climatic and soil conditions, farming practices, representative types of crops and animals and population densities.
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Agricultura , Abastecimiento de Alimentos , Fósforo , Reciclaje , Animales , Humanos , Países Bajos , Fósforo/metabolismo , Fósforo DietéticoRESUMEN
Pastoralists have traditional ecological knowledge (TEK), which is important for their livelihoods and for policies and interventions. Pastoralism is under pressure, however, which may result in a decline of pastoral lifestyle and its related TEK. We, therefore, addressed the following objectives (i) to inventorise and assess how pastoralists characterise and value soils and forages in their environment, (ii) to analyse how soil, forage and livestock (i.e. cattle) characteristics relate to herding decisions and (iii) to determine whether TEK underlying herding decisions differs across generations. Data were collected through focus groups and individual interviews with 72 pastoralists, belonging to three generations and to three agro-ecological zones. Using a three-point scale (high, medium, low), four grasses and three tree forages were assessed in terms of nutritional quality for milk, meat, health and strength. Using their own visual criteria, pastoralists identified five different soils, which they selected for herding at different times of the year. Pastoralists stated that Pokuri was the best soil because of its low moisture content, whereas Karaal was the worst because forage hardly grows on it. They stated that perennials, such as Andropogon gayanus and Loxoderra ledermannii, were of high nutritional quality, whereas annuals such as Andropogon pseudapricus and Hyparrhenia involucrata were of low nutritional quality. Afzelia africana was perceived of high quality for milk production, whereas Khaya senegalensis had the highest quality for meat, health and strength. Pastoralists first used soil, then forage and finally livestock characteristics in their herding decisions. Pastoralists' TEK was not associated with their generations, but with their agro-ecological zones. This study suggests that pastoralists had common and detailed TEK about soils, forages and livestock characteristics, underlying their herding decisions. To conclude, pastoralists use a holistic approach, combining soil, vegetation and livestock TEK in herding decisions. Such TEK can guide restoration or improvement of grazing lands, and land use planning.
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Crianza de Animales Domésticos/métodos , Bovinos , Toma de Decisiones , Animales , Conservación de los Recursos Naturales , Humanos , Poaceae , Población Rural , SueloRESUMEN
New federal regulations allow HIV-positive individuals to be live kidney donors; however, potential candidacy for donation is poorly understood given the increased risk of end-stage renal disease (ESRD) associated with HIV infection. To better understand this risk, we compared the incidence of ESRD among 41 968 HIV-positive participants of North America AIDS Cohort Collaboration on Research and Design followed for a median of 5 years with the incidence of ESRD among comparable HIV-negative participants of National Health and Nutrition Examination III followed for a median of 14 years. We used risk associations from multivariable Cox proportional hazards regression to derive cumulative incidence estimates for selected HIV-positive scenarios (no history of diabetes, hypertension, AIDS, or hepatitis C virus coinfection) and compared these estimates with those from similarly selected HIV-negative scenarios. For 40-year-old HIV-positive individuals with health characteristics that were similar to those of age-matched kidney donors, viral load <400 copies/mL, and CD4+ count ≥500 cells/µL, the 9-year cumulative incidence of ESRD was higher than that of their HIV-negative peers, yet still low: 2.5 versus 1.1 per 10 000 among white women, 3.0 versus 1.3 per 10 000 among white men, 13.2 versus 3.6 per 10 000 among black women, and 15.8 versus 4.4 per 10 000 among black men. HIV-positive individuals with no comorbidities and well-controlled disease may be considered low-risk kidney donor candidates.
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Rechazo de Injerto/epidemiología , Infecciones por VIH/complicaciones , Fallo Renal Crónico/epidemiología , Trasplante de Riñón/efectos adversos , Donadores Vivos , Adulto , Estudios de Casos y Controles , Femenino , Estudios de Seguimiento , Tasa de Filtración Glomerular , Rechazo de Injerto/etiología , Supervivencia de Injerto , Infecciones por VIH/virología , Seropositividad para VIH , VIH-1/fisiología , Humanos , Incidencia , Fallo Renal Crónico/etiología , Pruebas de Función Renal , Masculino , Persona de Mediana Edad , Nefrectomía , América del Norte/epidemiología , Pronóstico , Factores de Riesgo , Carga ViralRESUMEN
BACKGROUND: The persistence of risky behaviors while driving and traffic accidents despite campaigns to increase awareness suggest that there may be underlying causes that maintain proneness to traffic violations. The aim of the current study was to assess: a) the prevalence of psychopathology in a sample of people who have lost their driving license due to former traffic violations and b) the discriminatory capacity of each psychopathological disorder to differentiate among people with high and low proneness to perform risky behaviors while driving. METHODS: 383 participants in a course to recover their driving license after its loss due to previous traffic violations were included. The International Neuropsychiatric Interview (M.I.N.I.) according to DSM-IV was used to assess psychopathology. RESULTS: Between 67% and 76.2% of the participants had been affected by a lifetime psychopathological disorder until the moment of assessment. The most prevalent diagnoses were substance abuse including alcohol (52.5-62.7%), ADHD (19.7-28.5%), depression (7.9-14.4%) and anxiety (3.6-12.4%). Substance abuse and ADHD also showed the strongest set of associations with specific risk behaviors, but ADHD emerged as the most discriminant disorder to distinguish between those people at high and low risk of while driving. CONCLUSIONS: The results of the current study suggest that addressing psychopathology explicitly to prevent risky behaviors and recidivism while driving would provide benefits in this area.
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Conducción de Automóvil/psicología , Concesión de Licencias/estadística & datos numéricos , Trastornos Mentales/epidemiología , Asunción de Riesgos , Accidentes de Tránsito/estadística & datos numéricos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Prevalencia , España/epidemiología , Adulto JovenRESUMEN
BACKGROUND: Skin problems are among the most frequent reasons for seeking medical attention in primary care. In recent years, as a result of the process of adapting medical curricula to the requirements of the European Higher Education Area, the amount of time students spend learning the concepts of dermatology has been reduced in many universities. MATERIAL AND METHODS: In order to reach a consensus on core content for undergraduate education in dermatology, we sent a survey to the 57 members of the instructors' group of the Spanish Academy of Dermatology and Venereology (AEDV), asking their opinions on what objectives should be set for a dermatology course in Spain. A total of 131 previously selected objectives were listed. We then applied the Delphi method to achieve consensus on which ones the respondents considered important or very important (score≥4 on a Likert scale). RESULTS: Nineteen responses (33%) were received. On the second round of the Delphi process, 68 objectives achieved average scores of at least 4. The respondents emphasized that graduates should understand the structure and functions of the skin and know about bacterial, viral, and fungal skin infections, the most common sexually transmitted diseases (STDs), and the 4 main inflammatory dermatoses. Students should also learn about common complaints, such as itching and bald patches; the management of dermatologic emergencies; purpura and erythema nodosum as signs of internal disease; and the prevention of STDs and skin cancer. During clinical clerkships students should acquire the communication skills they will need to interview patients, write up a patient's medical history, and refer the patient to a specialist. CONCLUSIONS: The AEDV's group of instructors have defined their recommendations on the core content that medical faculties should adopt for the undergraduate subject of dermatology in Spain.
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Curriculum , Dermatología/educación , Educación de Pregrado en Medicina , Venereología/educación , Humanos , EspañaRESUMEN
OBJECTIVE: To examine the utility of waist-to-height ratio to identify risk of high blood pressure when compared to body mass index and waist circumference in South Indian urban school children. DESIGN: Secondary data analysis from a cross-sectional study. SETTING: Urban schools around Bangalore, India. PARTICIPANTS: 1913 children (58.1% males) aged 6-16 years with no prior history of chronic illness (PEACH study). METHODS: Height, weight, waist circumference and of blood pressure were measured. Children with blood pressure ?90th percentile of age-, sex-, and height-adjusted standards were labelled as having high blood pressure. RESULTS: 13.9% had a high waist-to-height ratio, 15.1% were overweight /obese and 21.7% had high waist circumference. High obesity indicators were associated with an increased risk of high blood pressure. The adjusted risk ratios (95% CI) of high systolic blood pressure with waist-to-height ratio, body mass index and waist circumference were 2.48 (1.76, 3.47), 2.59 (1.66, 4.04) and 2.38 (1.74, 3.26), respectively. Similar results were seen with high diastolic blood pressure. CONCLUSION: Obesity indicators, especially waist-to-height ratio due to its ease of measurement, can be useful initial screening tools for risk of high blood pressure in urban Indian school children.
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Hipertensión/epidemiología , Estudiantes/estadística & datos numéricos , Relación Cintura-Estatura , Adolescente , Antropometría , Niño , Estudios Transversales , Femenino , Humanos , India/epidemiología , Masculino , Obesidad Infantil , RiesgoRESUMEN
OBJECTIVE: To study the prevalence of attention-deficit and hyperactivity disorder (ADHD) in adult patients with bipolar disorder (BD) and identify differential clinical features for a better diagnosis. METHOD: A total of 163 euthymic bipolar out-patients were screened for ADHD with the ASRS.V1 and the WURS at a BD Unit. Patients with a positive screening were assessed with the CAADID, at an ADHD unit. Sociodemographic and clinical features of the groups with and without ADHD were compared. RESULTS: Lifetime prevalence of comorbid ADHD was 17.9% (10.5% for adult ADHD and 7.4% for childhood ADHD). The BD + ADHD group showed more suicidal behaviour although less severe. Comorbidity was also more common, especially regarding substance use disorders. Nevertheless, these patients did not show more affective episodes or hospitalizations and suffered more atypical but less melancholic depression. However, they required more treatment with psychotherapy and valproate. One-third of positive screenings at the ASRS were false; a severe course of BD was the hallmark of this subgroup. CONCLUSION: Adult patients with BD and ADHD show differential clinical features, but not a more severe course of BD. Comorbidity with substance abuse is a big issue, deserving special clinical attention. Better screening tools are necessary to avoid overdiagnosis of comorbid ADHD in BD.
Asunto(s)
Trastorno por Déficit de Atención con Hiperactividad/epidemiología , Trastorno Bipolar/epidemiología , Trastornos Relacionados con Sustancias/epidemiología , Adulto , Comorbilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , PrevalenciaRESUMEN
BACKGROUND AND AIMS: The multichannel blocker dronedarone is currently indicated for the maintenance of sinus rhythm after successful cardioversion in adult clinically stable patients with paroxysmal or persistent atrial fibrillation (AF), with careful monitoring of cardiac, hepatic and renal function. We aimed to investigate patients' quality of life (QoL) and tolerability and effectiveness of dronedarone under real life conditions. METHODS: In the 1-year prospective, non-interventional IMPULS study, 161 office-based cardiologists, general practitioners and internists throughout Germany documented 549 patients with AF who were currently or newly prescribed dronedarone (safety set, SS). Of those, 342 patients (full analysis set, FAS) provided data on QoL at baseline, 6 months and 12 months). RESULTS: Mean age of patients was 67.6/66.3 years; 53.0 %/57.3 % were men (SS/FAS). AF type at inclusion in the SS/FAS was paroxysmal in 71.9 %/71.3 % and persistent in 26.0 %/26.6 % (missing in 2.0 %/2.0 %). The proportion of patients in sinus rhythm increased from 44.6 % at baseline to 70.2 % (SS). The mean value on the 100-point visual analogue scale (EuroQol EQ-5D) increased from 62.3 ± 17.1 at baseline by 11.4 ± 18.7 points (FAS, p<0.0001). The AF-QoL Psychological Domain improved from 44.6 ± 22.6 at baseline by 16.0 ± 23.5 points at 1 year (p<0.0001), the AF-QoL physical domain from 49.5 ± 22.1 by 10.9 ± 22.5 points (p<0.0001), and the AF-QoL sexual domain from 61.8 ± 27.1 by 6.6 ± 28.2 points (p<0.0001). In all, 136 patients (24.8 % of all patients in the safety set) had at least one adverse drug reaction (ADR) causally related to dronedarone. CONCLUSIONS: Various dimensions of quality of life of patients with AF were improved on dronedarone under clinical practice conditions. No previously unknown safety issues were noted.