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1.
Dev Psychobiol ; 66(3): e22477, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38433461

RESUMEN

Response inhibition difficulties are reported in individuals with eating disorders (EDs), anxiety, and depression. Although ED symptoms and internalizing symptoms co-occur in preadolescence, there is limited research examining associations between these symptoms and response inhibition in this age group. This study is the first to investigate the associations between behavioral and neural markers of response inhibition, disordered eating (DE), and internalizing symptoms in a community sample of preadolescents. Forty-eight children (M age = 10.95 years, 56.3% male) completed a Go/NoGo task, whereas electroencephalography was recorded. Self-report measures of DE and internalizing symptoms were collected. Higher levels of anxiety and depression were associated with neural markers of suboptimal response inhibition (attenuated P3NoGo amplitudes) in preadolescence. In contrast, higher levels of depression were associated with greater response inhibition at a behavioral level. These findings suggest internalizing symptoms in preadolescence are associated with P3-indexed difficulties in evaluation and monitoring, but these are not sufficient to disrupt behavioral performance on a response inhibition task. This pattern may reflect engagement of compensatory processes to support task performance. DE was not significantly associated with response inhibition, suggesting that difficulties in response inhibition may only be reliably observed in more chronic and severe DE and ED presentations.


Asunto(s)
Ansiedad , Trastornos de Alimentación y de la Ingestión de Alimentos , Niño , Masculino , Humanos , Femenino , Trastornos de Ansiedad , Electroencefalografía
2.
Pest Manag Sci ; 79(12): 4897-4905, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37515756

RESUMEN

BACKGROUND: One of the most important sources of pesticide pollution of surface waters is runoff and erosion from agricultural fields after rainfall. This study analyses the efficacy of different risk mitigation measures to reduce pesticide runoff and erosion inputs into surface waters from arable land excluding rice fields. RESULTS: Three groups of risk mitigation measures were quantitatively analyzed: vegetative filter strips, micro-dams in row crops and soil conservation measures. Their effectiveness was evaluated based on a meta-analysis of available experimental data using statistical methods such as classification and regression trees, and exploratory data analysis. Results confirmed the effectiveness of vegetative filter strips and micro-dams. Contrary to common assumption, the width of vegetative filter strips alone is not sufficient to predict their effectiveness. The effectiveness of soil conservation measures (especially mulch-tillage) varied widely. This was in part due to the heterogeneity of the available experimental data, probably resulting from the inconsistent implementation and the inadequate definitions of these measures. CONCLUSION: Both vegetative filter strips and micro-dams are effective and suitable, and can therefore be recommended for quantitative assessment of environmental pesticide exposure in surface waters. However, the processes of infiltration and sedimentation in vegetative filter strips should be simulated with a mechanistic model like Vegetative Filter Strip Modeling System, VFSMOD. The reduction effect of micro-dams can be modelled by reducing the runoff curve number, e.g., in the pesticide root zone model, PRZM. Soil conservation measures are in principle promising, but further well-documented data are needed to determine under which conditions they are effective. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.


Asunto(s)
Plaguicidas , Plaguicidas/análisis , Suelo , Exposición a Riesgos Ambientales , Agricultura
3.
Front Hum Neurosci ; 16: 841633, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35693540

RESUMEN

Anorexia nervosa (AN) and obsessive-compulsive disorder (OCD) are commonly reported to co-occur and present with overlapping symptomatology. Executive functioning difficulties have been implicated in both mental health conditions. However, studies directly comparing these functions in AN and OCD are extremely limited. This review provides a synthesis of behavioral and neuroimaging research examining executive functioning in AN and OCD to bridge this gap in knowledge. We outline the similarities and differences in behavioral and neuroimaging findings between AN and OCD, focusing on set shifting, working memory, response inhibition, and response monitoring. This review aims to facilitate understanding of transdiagnostic correlates of executive functioning and highlights important considerations for future research. We also discuss the importance of examining both behavioral and neural markers when studying transdiagnostic correlates of executive functions.

4.
J Child Adolesc Ment Health ; 34(1-3): 42-52, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-38504657

RESUMEN

Objective: According to self-determination theory, satisfied basic psychological needs can be a protective factor for psychopathology, including eating disorders and anxiety symptomatology. However, most research has focused on adolescent and adult populations, with less work examining perceived basic psychological need satisfaction from parents in younger samples who report anxiety and disordered eating. This cross-sectional study aimed to investigate whether basic psychological need satisfaction from parents was associated with disordered eating in preadolescents and whether anxiety mediated this relation.Method: A total of 211 preadolescents were recruited from primary schools across south Wales (mean age = 10.27 years, age range = 9-11 years; 49.3% female). Children completed self-report questionnaires on their basic psychological need satisfaction when with parents, as well as disordered eating and anxiety symptoms.Results: It was found that higher needs satisfaction was associated with lower disordered eating and anxiety, with stronger relations found in girls compared with boys. Furthermore, anxiety was found to mediate this relationship.Conclusions: Results suggest that basic psychological needs satisfaction may play an important role in the early emergence of co-occurring disordered eating and anxiety symptoms in boys and girls. The importance of considering anxiety symptoms in future work investigating needs satisfaction in the context of disordered eating and eating disorders is discussed.

5.
Brain Behav ; 11(1): e01904, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-33078578

RESUMEN

OBJECTIVES: Research has demonstrated links between disordered eating, anxiety, and depression in adults and adolescents but there is limited research investigating these associations in preadolescence. The current study examined the associations between disordered eating, anxiety, and depression during preadolescence, as well as the role of gender in moderating these associations. METHOD: Two hundred and thirteen children (M = 10.3 years; 51.2% male) reported levels of disordered eating (ChEAT) and anxiety and depression symptoms (RCADS-25). RESULTS: Regression analyses support an association between disordered eating and both anxiety and depression in preadolescence. Overall, there were no significant differences between boys and girls when the main effect was examined, which differs from research in adolescents. DISCUSSION: These findings highlight the importance of early detection for disordered eating behaviors and attitudes, as well as anxiety and depression in both boys and girls during preadolescence. Longitudinal research examining these associations is vital to help understand the trajectories of these problems, but also the gender differences in disordered eating that emerge during adolescence. Transdiagnostic interventions targeting several co-occurring problems, such as disordered eating, anxiety, and depression might be effective for preventing the development of eating disorders in the long term.


Asunto(s)
Trastornos de Alimentación y de la Ingestión de Alimentos , Adolescente , Ansiedad/epidemiología , Trastornos de Ansiedad , Niño , Depresión/epidemiología , Trastornos de Alimentación y de la Ingestión de Alimentos/epidemiología , Femenino , Humanos , Masculino , Factores Sexuales
6.
Pest Manag Sci ; 73(5): 852-861, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-28058804

RESUMEN

BACKGROUND: In order to assess surface water exposure to active substances of plant protection products (PPPs) in the European Union (EU), the FOCUS (FOrum for the Co-ordination of pesticide fate models and their USe) surface water workgroup introduced four run-off and six drainage scenarios for Step 3 of the tiered FOCUSsw approach. These scenarios may not necessarily represent realistic worst-case situations for the different Member States of the EU. Hence, the suitability of the scenarios for risk assessment in the national authorisation procedures is not known. RESULTS: Using Germany as an example, the paper illustrates how national soil-climate scenarios can be developed to model entries of active substances into surface waters from run-off and erosion (using the model PRZM) and from drainage (using the model MACRO). In the authorisation procedure for PPPs on Member State level, such soil-climate scenarios can be used to determine exposure endpoints with a defined overall percentile. CONCLUSION: The approach allows the development of national specific soil-climate scenarios and to calculate percentile-based exposure endpoints. The scenarios have been integrated into a software tool analogous to FOCUS-SWASH which can be used in the future to assess surface water exposure in authorisation procedures of PPPs in Germany. © 2017 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.


Asunto(s)
Monitoreo del Ambiente/estadística & datos numéricos , Plaguicidas/análisis , Estadística como Asunto , Contaminantes Químicos del Agua/análisis , Clima , Alemania
7.
Pest Manag Sci ; 72(11): 2099-2109, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-27299476

RESUMEN

BACKGROUND: The objective was to refine the standard regulatory exposure scenario used in plant protection product authorisations by developing a more realistic landscape-related GIS-based exposure assessment for terrestrial non-target arthropods. We quantified the proportion of adjacent off-target area in agricultural landscapes potentially exposed to insecticide drift from applications of the active substance fenoxycarb. High-resolution imagery, landscape classification and subsequent stepwise analysis of a whole landscape using drift and interception functions were applied to selected areas in representative fruit-producing regions in Germany. RESULTS: Even under worst-case assumptions regarding treated area, use rate and drift, less than 12% of the non-agricultural habitat area would potentially be exposed to fenoxycarb drift above regulatory acceptable concentrations. Additionally, if the filtering effect of tall vegetation were taken into account, this number would decrease to 6.6%. Further refinements to landscape elements and application conditions indicate that less than 5% of the habitat area might be exposed above regulatory acceptable concentrations, meaning that 95% of the non-agricultural habitat area will be unimpacted (i.e. no unacceptable effects) and can serve as refuge for recolonisation. CONCLUSION: Approaches and tools are proposed for standardisable and transparent refinements in regulatory risk assessments on the landscape level. © 2016 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.


Asunto(s)
Exposición a Riesgos Ambientales , Monitoreo del Ambiente/métodos , Contaminantes Ambientales/análisis , Insecticidas/análisis , Fenilcarbamatos/análisis , Agricultura , Alemania , Medición de Riesgo/métodos
8.
Pest Manag Sci ; 72(7): 1279-84, 2016 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-27059427

RESUMEN

In 2001, the European Commission introduced a risk assessment project known as FOCUS (FOrum for the Coordination of pesticide fate models and their USe) for the surface water risk assessment of active substances in the European Union. Even for the national authorisation of plant protection products (PPPs), the vast majority of EU member states still refer to the four runoff and six drainage scenarios selected by the FOCUS Surface Water Workgroup. However, our study, as well as the European Food Safety Authority (EFSA), has stated the need for various improvements. Current developments in pesticide exposure assessment mainly relate to two processes. Firstly, predicted environmental concentrations (PECs) of pesticides are calculated by introducing model input variables such as weather conditions, soil properties and substance fate parameters that have a probabilistic nature. Secondly, spatially distributed PECs for soil-climate scenarios are derived on the basis of an analysis of geodata. Such approaches facilitate the calculation of a spatiotemporal cumulative distribution function (CDF) of PECs for a given area of interest and are subsequently used to determine an exposure concentration endpoint as a given percentile of the CDF. For national PPP authorisation, we propose that, in the future, exposure endpoints should be determined from the overall known statistical PEC population for an area of interest, and derived for soil and climate conditions specific to the particular member state. © 2016 Society of Chemical Industry.


Asunto(s)
Exposición a Riesgos Ambientales/análisis , Unión Europea , Plaguicidas/análisis , Contaminantes Químicos del Agua/análisis , Exposición a Riesgos Ambientales/efectos adversos , Monitoreo del Ambiente/métodos , Unión Europea/estadística & datos numéricos , Humanos , Plaguicidas/efectos adversos , Probabilidad , Medición de Riesgo , Suelo/química , Contaminantes Químicos del Agua/efectos adversos , Tiempo (Meteorología)
9.
Sci Rep ; 6: 22789, 2016 Mar 23.
Artículo en Inglés | MEDLINE | ID: mdl-27004454

RESUMEN

The application of multiphoton microscopy in the field of biomedical research and advanced diagnostics promises unique insights into the pathophysiology of inflammatory skin diseases. In the present study, we combined multiphoton-based intravital tomography (MPT) and fluorescence lifetime imaging (MPT-FLIM) within the scope of a clinical trial of atopic dermatitis with the aim of providing personalised data on the aetiopathology of inflammation in a non-invasive manner at patients' bedsides. These 'optical biopsies' generated via MPT were morphologically analysed and aligned with classical skin histology. Because of its subcellular resolution, MPT provided evidence of a redistribution of mitochondria in keratinocytes, indicating an altered cellular metabolism. Two independent morphometric algorithms reliably showed an even distribution in healthy skin and a perinuclear accumulation in inflamed skin. Moreover, using MPT-FLIM, detection of the onset and progression of inflammatory processes could be achieved. In conclusion, the change in the distribution of mitochondria upon inflammation and the verification of an altered cellular metabolism facilitate a better understanding of inflammatory skin diseases and may permit early diagnosis and therapy.


Asunto(s)
Dermatitis Atópica/diagnóstico por imagen , Microscopía de Fluorescencia por Excitación Multifotónica/métodos , Piel/patología , Tomografía Óptica/métodos , Algoritmos , Biopsia , Núcleo Celular/metabolismo , Células Cultivadas , Dermatitis Atópica/metabolismo , Humanos , Queratinocitos/metabolismo , Mitocondrias/metabolismo , Piel/citología , Piel/metabolismo
10.
J Dtsch Dermatol Ges ; 12(12): 1112-9, 2014 Dec.
Artículo en Inglés, Alemán | MEDLINE | ID: mdl-25482694

RESUMEN

BACKGROUND AND OBJECTIVES: Progressive pigmented purpuric dermatosis (PPPD, Schamberg disease) is a rare benign, but chronic dermatosis frequently misdiagnosed as vasculitis or bleeding disorder. Although affected patients experience significant impairment in quality of life no effective treatment has been established. The aim of our two center case series was to evaluate efficacy and tolerability of the antioxidants rutoside and ascorbic acid as combination treatment for PPPD. PATIENTS AND METHODS: A retrospective review was performed on 35 patients with PPPD treated with 2 × 50 mg rutoside and 1,000 mg ascorbic acid daily between 2004 until 2011. The mean treatment duration was 8.2 months. RESULTS: 71.4% of the participants experienced complete clearance and 20.0% an improvement of more than 50%, accompanied by increased quality of life. Nine participants (25.1%) relapsed after discontinuation. In seven, rutoside and ascorbic acid was re-initiated, and all responded again. Only three participants reported mild adverse effects. Participants with shorter disease duration showed better therapeutic success, shorter time to response and lower risk of recurrence. CONCLUSION: Oral rutoside and ascorbic acid may be an efficient and well tolerated treatment for PPPD. Early treatment is recommended to achieve best clinical outcome.


Asunto(s)
Ácido Ascórbico/administración & dosificación , Trastornos de la Pigmentación/tratamiento farmacológico , Trastornos de la Pigmentación/patología , Púrpura/tratamiento farmacológico , Púrpura/patología , Rutina/administración & dosificación , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Quimioterapia Combinada , Femenino , Alemania , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del Tratamiento , Adulto Joven
11.
Intensive Care Med ; 37(4): 701-10, 2011 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-21380525

RESUMEN

PURPOSE: To study the effects of pretreatment with levosimendan (LEVO, a Ca²(+)-sensitizer and K (ATP) (+) channel opener) and/or the K (ATP) (+) channel antagonist glibenclamide (GLIB) on systemic hemodynamics, metabolism, and regional gastromucosal oxygenation during hypoxic hypoxemia. METHODS: Chronically instrumented, healthy dogs (24-32 kg, n = 6 per group, randomized cross-over design) were repeatedly sedated, mechanically ventilated (FiO2 ~0.3) and subjected to the following interventions: no pretreatment, LEVO pretreatment, GLIB pretreatment, or combined LEVO + GLIB pretreatment, each followed by hypoxic hypoxemia (FiO2 ~0.1). We measured cardiac output (CO, ultrasonic flow probes), oxygen consumption (VO2, indirect calorimetry), and gastromucosal microvascular hemoglobin oxygenation (µHbO2, spectrophotometry). STATISTICS: data are presented as mean ± SEM and compared by one-way ANOVA (direct drug effects within group) and two-way ANOVA (between all hypoxic conditions) both with Bonferroni corrections; p < 0.05. RESULTS: In LEVO-pretreated hypoxemia, CO was significantly higher compared to unpretreated hypoxemia. The increased CO was neither associated with an increased VO2 nor with markers of aggravated anaerobiosis (pH, BE, lactate). In addition, LEVO pretreatment did not further compromise gastromucosal µHbO2 in hypoxemia. After combined LEVO + GLIB pretreatment, systemic effects of GLIB were apparent, however, CO was significantly higher than during unpretreated and GLIB-pretreated hypoxemia, but equal to LEVO-pretreated hypoxemia, indicating that GLIB did not prevent the increased CO in LEVO-pretreated hypoxia. CONCLUSIONS: LEVO pretreatment resulted in improved systemic circulation (CO) during hypoxemia without fueling systemic VO2, without aggravating systemic anaerobiosis markers, and without further compromising microvascular gastromucosal oxygenation. Thus, LEVO pretreatment may be an option to support the systemic circulation during hypoxia.


Asunto(s)
Gliburida/farmacología , Hidrazonas/farmacología , Hipoglucemiantes/farmacología , Hipoxia/tratamiento farmacológico , Hipoxia/metabolismo , Piridazinas/farmacología , Vasodilatadores/farmacología , Enfermedad Aguda , Adenosina Trifosfato/farmacología , Animales , Perros , Hemodinámica/efectos de los fármacos , Metabolismo/efectos de los fármacos , Microcirculación/efectos de los fármacos , Modelos Animales , Simendán
12.
Virus Res ; 156(1-2): 54-63, 2011 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-21215283

RESUMEN

Human species F adenoviruses, HAdV-40 and HAdV-41, display characteristic gut tropism in vivo as well as poor infectivity in cell culture. To address the hypothesis that poor infectivity of HAdV-40/41 reflects a partial block prior to genome delivery, the internalization and trafficking of HAdV-41, HAdV-5 (species C) and HAdV-35 (species B) were compared in 293 (human embryonic kidney) cells, which complement E1B function in HAdV-40/41, and in A549 (lung epithelial) cells. Unlike fluorescently labeled HAdV-5 virions which were transported towards the nucleus and HAdV-35 virions which colocalized with LAMP-1, HAdV-41 virions appeared to be scattered throughout the cytoplasm but did not colocalize with markers of late endosomes/lysosomes (cathepsin B, LAMP-1) or with caveolin 1. Fluorescent dextran was released from vesicles in only 10% of HAd41-infected cells that took up dextran, compared to 70% of HAdV-5-infected cells, suggesting inefficient disruption of endosomes by HAdV-41 or uptake of HAdV-41 virions into a different compartment than HAdV-5 virions. Quantitative transmission electron microscopy, which showed greater binding of HAdV-41 virions to 293 cells than to A549 cells, identified a major block in uptake of HAdV-41 virions from the surface of both cell lines. More than 80% of virions remained on the surface 60 min p.i. and as late as 4h p.i. In contrast to HAdV-5 and HAdV-35 virions, which associated mostly with clathrin-coated pits, HAdV-41 virions associated mostly with caveolar-like invaginations and, to a lesser extent, with larger non-clathrin-coated pits, suggesting internalization by pathways other than clathrin-mediated endocytosis.


Asunto(s)
Adenovirus Humanos/metabolismo , Internalización del Virus , Transporte Activo de Núcleo Celular , Adenovirus Humanos/ultraestructura , Caveolina 1/metabolismo , Línea Celular Tumoral , Células HEK293 , Células HeLa , Humanos , Virión/metabolismo
13.
J Rheumatol ; 35(6): 1031-7, 2008 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-18398942

RESUMEN

OBJECTIVE: It is generally agreed that there is a seasonal variation in the prevalence of cutaneous manifestations of systemic lupus erythematosus (SLE). We investigated whether there is seasonal variation in the incidence of noncutaneous lupus flare in Hong Kong. METHODS: We reviewed all noncutaneous lupus flare in 222 consecutive patients with SLE followed in our clinic from 1995 to 2005. Specific organ involvement of each flare was reviewed. The variation in the prevalence of lupus flare by calendar month and the relation with climatic factors were determined. RESULTS: The total followup was 18,412 patient-months. In total, there were 313 episodes of noncutaneous flare recorded in 129 patients. There were more lupus flares in December and January [2.31 episodes, vs 1.58 episodes per 100 patient-months for other calendar months; relative risk (RR) 1.46, 95% CI 1.12-1.90, p = 0.004], and more flares of lupus nephritis in December and January (1.14 episodes, vs 0.60 episodes per 100 patient-months for other calendar months; RR 1.90, 95% CI 1.29-2.80, p = 0.001). There were more cases of membranous nephropathy in December and January (0.46 episode, vs 0.18 episode per 100 patient-months for other calendar months; RR 2.59, 95% CI 1.36-4.93, p = 0.0027), while the variation in prevalence of proliferative lupus nephritis was not statistically significant. There was also a significant U-shape correlation between the rate of lupus flare and the monthly average environmental temperature (r = 0.802, p = 0.0096), with higher flare rate at extremes of temperature. CONCLUSION: We found substantial seasonal variation in the incidence of noncutaneous flare in our SLE patients, with peak incidence in December and January. There was a U-shaped relation between environmental temperature and the prevalence of noncutaneous flare. Keeping a warm living environment and avoiding exposure to extremes of temperature may help to reduce flare for SLE patients in subtropical countries.


Asunto(s)
Clima , Lupus Eritematoso Sistémico/complicaciones , Estaciones del Año , Adulto , Femenino , Hong Kong , Humanos , Masculino , Índice de Severidad de la Enfermedad
14.
Exp Dermatol ; 15(5): 387-91, 2006 May.
Artículo en Inglés | MEDLINE | ID: mdl-16630080

RESUMEN

This study demonstrates an innovative application of atomic force microscopy (AFM). The combination of high-resolution AFM technology and tape stripping is presented as a tool for the structure analysis of human stratum corneum (SC) at a nanometer scale. Topographic images with a vertical resolution of about 10 nm of the SC are presented. Topographical and structural differences between aged and young skin can be observed. Aged skin SC is characterized by an increased single-cell surface area, prominent intercellular gaps and enhanced cell surface roughness. The use of AFM in combination with other already established methods, e.g. tape stripping in the field of dermatological research will give new insights to the structure, function and morphodynamics of SC.


Asunto(s)
Epidermis/ultraestructura , Microscopía de Fuerza Atómica , Adulto , Anciano , Humanos , Masculino , Nanotecnología , Envejecimiento de la Piel , Manejo de Especímenes
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