2,302 research outputs found
Nonâmotor symptom burden in patients with parkinsonâs disease with impulse control disorders and compulsive behaviours: results from the coppADiS cohort
The study was aimed at analysing the frequency of impulse control disorders (ICDs) and compulsive behaviours (CBs) in patients with Parkinsonâs disease (PD) and in control subjects (CS) as well as the relationship between ICDs/CBs and motor, nonmotor features and dopaminergic treatment in PD patients. Data came from COPPADISâ2015, an observational, descriptive, nationwide (Spain) study. We used the validated Questionnaire for impulsiveâcompulsive Disorders in parkinsonâs Disease-Rating Scale (QUIPâRS) for ICD/CB screening. The association between demographic data and ICDs/CBs was analyzed in both groups. In PD, this relationship was evaluated using clinical features and treatmentârelated data. As result, 613 PD patients (mean age 62.47 ± 9.09 years, 59.87% men) and 179 CS (mean age 60.84 ± 8.33 years, 47.48% men) were included. ICDs and CBs were more frequent in PD (ICDs 12.7% vs. 1.6%, p < 0.001; CBs 7.18% vs. 1.67%, p = 0.01). PD patients had more frequent
previous ICDs history, premorbid impulsive personality and antidepressant treatment (p < 0.05) compared with CS. In PD, patients with ICDs/CBs presented younger age at disease onset, more frequent history of previous ICDs and premorbid personality (p < 0.05), as well as higher comorbidity with nonmotor symptoms, including depression and poor quality of life. Treatment with dopamine agonists increased the risk of ICDs/CBs, being dose dependent (p < 0.05). As conclusions, ICDs and CBs were more frequent in patients with PD than in CS. More nonmotor symptoms were present in patients with PD who had ICDs/CBs compared with those without. Dopamine agonists have a prominent effect on ICDs/CBs, which could be influenced by dose
Using the MitoB method to assess levels of reactive oxygen species in ecological studies of oxidative stress
In recent years evolutionary ecologists have become increasingly interested in the effects of reactive
oxygen species (ROS) on the life-histories of animals. ROS levels have mostly been inferred indirectly
due to the limitations of estimating ROS from in vitro methods. However, measuring ROS (hydrogen
peroxide, H2O2) content in vivo is now possible using the MitoB probe. Here, we extend and refine
the MitoB method to make it suitable for ecological studies of oxidative stress using the brown trout
Salmo trutta as model. The MitoB method allows an evaluation of H2O2 levels in living organisms over
a timescale from hours to days. The method is flexible with regard to the duration of exposure and
initial concentration of the MitoB probe, and there is no transfer of the MitoB probe between fish. H2O2
levels were consistent across subsamples of the same liver but differed between muscle subsamples
and between tissues of the same animal. The MitoB method provides a convenient method for
measuring ROS levels in living animals over a significant period of time. Given its wide range of possible
applications, it opens the opportunity to study the role of ROS in mediating life history trade-offs in
ecological settings
An integrated hypothesis on the domestication of Bactris gasipaes
Data Availability Statement: All relevant data are within the paper and its Supporting Information files.Peach palm (Bactris gasipaes Kunth) has had a central place in the livelihoods of people in
the Americas since pre-Columbian times, notably for its edible fruits and multi-purpose
wood. The botanical taxon includes both domesticated and wild varieties. Domesticated var
gasipaes is believed to derive from one or more of the three wild types of var. chichagui
identified today, although the exact dynamics and location of the domestication are still
uncertain. Drawing on a combination of molecular and phenotypic diversity data, modeling
of past climate suitability and existing literature, we present an integrated hypothesis about
peach palmâs domestication. We support a single initial domestication event in south western
Amazonia, giving rise to var. chichagui type 3, the putative incipient domesticate. We
argue that subsequent dispersal by humans across western Amazonia, and possibly into
Central America allowed for secondary domestication events through hybridization with resident
wild populations, and differential human selection pressures, resulting in the diversity
of present-day landraces. The high phenotypic diversity in the Ecuadorian and northern
Peruvian Amazon suggest that human selection of different traits was particularly intense
there. While acknowledging the need for further data collection, we believe that our results
contribute new insights and tools to understand domestication and dispersal patterns of this
important native staple, as well as to plan for its conservatio
A comprehensive study of spike fruiting efficiency in wheat
Spike fruiting efficiency (FE), defined as grains per unit of spike dry weight at anthesis (SDWa) is a promising trait for improving grain number (GN) in wheat (Triticum aestivum L.). It is often estimated at maturity as the grains per unit of chaff or FE at maturity (FEm). The fertile floret efficiency (FFE), defined as fertile florets per unit of SDWa, and grain set (GST), or the number of grains per floret, were studied to better understand FE determination for the first time. Two double haploid populations designed by crossing modern cultivars contrasting for FE [âBaguette 19â and âBaguette Premium 11â(high FE) Ă âBioINTA2002â (low FE)] were sown in five environments. The FE and FEm showed an unstable correlation (low or high) among genotypes within environments (caused by variable SDWaâchaff associations), resulting in a worse correlation between GN and FEm than between GN and FE. Therefore, the use of FEm as a surrogate for FE to improve GN may yield lower gains than those expected if FE were used. The narrow-sense heritability of FFE was high but the variability in fertile florets per spike among genotypes within environments was correlated with FFE only in the environments with high SDWa. Despite the close association between FE and FFE, the former was not totally set at anthesis, as GST greatly affected FE and GN. Selecting for higher FFE and GST, where genotype Ă environment effects determine heavy spikes at anthesis, is an alternative to breeding for improved GN.Fil: Pretini, Nicole. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires. Universidad Nacional del Noroeste de la Provincia de Buenos Aires. Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires; ArgentinaFil: Terrile, Ignacio Ismael. Instituto Nacional de TecnologĂa Agropecuaria. Centro Regional Buenos Aires Norte. EstaciĂłn Experimental Agropecuaria Pergamino; ArgentinaFil: Gazaba, Luciana N.. Instituto Nacional de TecnologĂa Agropecuaria. Centro Regional Buenos Aires Norte. EstaciĂłn Experimental Agropecuaria Pergamino; ArgentinaFil: Donaire, Guillermo M.. Instituto Nacional de TecnologĂa Agropecuaria. Centro Regional CĂłrdoba. EstaciĂłn Experimental Agropecuaria Marcos JuĂĄrez; ArgentinaFil: Arisnabarreta Dupuy, SebastiĂĄn. Instituto Nacional de TecnologĂa Agropecuaria. Centro Regional Buenos Aires Norte. EstaciĂłn Experimental Agropecuaria Pergamino; ArgentinaFil: Vanzetti, Leonardo SebastiĂĄn. Instituto Nacional de TecnologĂa Agropecuaria. Centro Regional CĂłrdoba. EstaciĂłn Experimental Agropecuaria Marcos JuĂĄrez; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - CĂłrdoba; ArgentinaFil: GonzĂĄlez, Fernanda Gabriela. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires. Universidad Nacional del Noroeste de la Provincia de Buenos Aires. Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires; Argentin
Deep MMT Transit Survey of the Open Cluster M37 IV: Limit on the Fraction of Stars With Planets as Small as 0.3 R_J
We present the results of a deep (15 ~< r ~< 23), 20 night survey for
transiting planets in the intermediate age open cluster M37 (NGC 2099) using
the Megacam wide-field mosaic CCD camera on the 6.5m MMT. We do not detect any
transiting planets among the ~1450 observed cluster members. We do, however,
identify a ~ 1 R_J candidate planet transiting a ~ 0.8 Msun Galactic field star
with a period of 0.77 days. The source is faint (V = 19.85 mag) and has an
expected velocity semi-amplitude of K ~ 220 m/s (M/M_J). We conduct Monte Carlo
transit injection and recovery simulations to calculate the 95% confidence
upper limit on the fraction of cluster members and field stars with planets as
a function of planetary radius and orbital period. Assuming a uniform
logarithmic distribution in orbital period, we find that < 1.1%, < 2.7% and <
8.3% of cluster members have 1.0 R_J planets within Extremely Hot Jupiter (EHJ,
0.4 < T < 1.0 day), Very Hot Jupiter (VHJ, 1.0 < T < 3.0 days) and Hot Jupiter
(HJ, 3.0 < T < 5.0 days) period ranges respectively. For 0.5 R_J planets the
limits are < 3.2%, and < 21% for EHJ and VHJ period ranges, while for 0.35 R_J
planets we can only place an upper limit of < 25% on the EHJ period range. For
a sample of 7814 Galactic field stars, consisting primarily of FGKM dwarfs, we
place 95% upper limits of < 0.3%, < 0.8% and < 2.7% on the fraction of stars
with 1.0 R_J EHJ, VHJ and HJ assuming the candidate planet is not genuine. If
the candidate is genuine, the frequency of ~ 1.0 R_J planets in the EHJ period
range is 0.002% < f_EHJ < 0.5% with 95% confidence. We place limits of < 1.4%,
< 8.8% and < 47% for 0.5 R_J planets, and a limit of < 16% on 0.3 R_J planets
in the EHJ period range. This is the first transit survey to place limits on
the fraction of stars with planets as small as Neptune.Comment: 61 pages, 19 figures, 5 tables, replaced with the version accepted
for publication in Ap
Management of Parkinson's disease and other movement disorders in women of childbearing age: Part 2
IntroducciĂłn
Muchas enfermedades que cursan con trastornos del movimiento hipercinético comienzan o afectan a mujeres en edad fértil. Es importante conocer los riesgos que tienen las mujeres con estas enfermedades durante el embarazo, asà como los posibles efectos de los tratamientos sobre el feto.
Objetivos
Definir las caracterĂsticas clĂnicas y los factores que condicionan la vida de la mujer en edad fĂ©rtil con distonĂa, corea, sĂndrome de Tourette, temblor y sĂndrome de piernas inquietas. Definir una guĂa de actuaciĂłn y manejo del embarazo y lactancia en las pacientes con esta enfermedad.
Desarrollo
Este documento de consenso se ha realizado mediante una bĂșsqueda bibliogrĂĄfica exhaustiva y discusiĂłn de los contenidos llevadas a cabo por un Grupo de Expertos en Trastornos del Movimiento de la Sociedad Española de NeurologĂa (SEN).
Conclusiones
En todas las mujeres que padecen o comienzan con trastornos del movimiento hipercinĂ©ticos se debe valorar el riesgo-beneficio de los tratamientos, reducir al mĂĄximo la dosis eficaz o administrarlo de forma puntual en los casos en que sea posible. En aquellas enfermedades de causa hereditaria es importante un consejo genĂ©tico para las familias. Es importante reconocer los trastornos del movimiento desencadenados durante el embarazo como determinadas coreas y sĂndrome de piernas inquietas.Introduction
Many diseases associated with hyperkinetic movement disorders manifest in women of childbearing age. It is important to understand the risks of these diseases during pregnancy, and the potential risks of treatment for the fetus.
Objectives
This study aims to define the clinical characteristics and the factors affecting the lives of women of childbearing age with dystonia, chorea, Tourette syndrome, tremor, and restless legs syndrome, and to establish guidelines for management of pregnancy and breastfeeding in these patients.
Results
This consensus document was developed through an exhaustive literature search and a discussion of the content by a group of movement disorder experts from the Spanish Society of Neurology.
Conclusions
We must evaluate the risks and benefits of treatment in all women with hyperkinetic movement disorders, whether pre-existing or with onset during pregnancy, and aim to reduce effective doses as much as possible or to administer drugs only when necessary. In hereditary diseases, families should be offered genetic counselling. It is important to recognise movement disorders triggered during pregnancy, such as certain types of chorea and restless legs syndrome
La intenci?n del emprendimiento en la ciudad de Arequipa
La ciudad de Arequipa ha atravesado por una serie de cambios en su estructura social, cultural, pol?tica y econ?mica, dichas circunstancias han conseguido cambiar la fisonom?a de la ciudad de Arequipa en los ?ltimos a?os (Ministerio de la Producci?n, 2014). El desempe?o de la actividad econ?mica de la ciudad ha permitido que se constituya en un polo de desarrollo relevante a nivel nacional. El factor humano tiene una importante relevancia en la situaci?n antes descrita, en Arequipa metropolitana habitan aproximadamente un mill?n de personas quienes por medio de su trabajo hacen posible la mejora econ?mica de nuestra ciudad. Sin embargo, a pesar de ser una ciudad con distintas opciones de trabajo gracias al desarrollo de distintas actividades, no puede cubrir y otorgar empleo a la totalidad de habitantes y de esta manera ellos mismos buscan distintas formas de subsistir econ?micamente, para lo cual recurren a la creatividad para obtener recursos econ?micos. El emprendimiento se manifiesta de distintas maneras y de forma cotidiana, esto influye a que cada individuo emprendedor llegue al proceso de descubrir, evaluar y explotar oportunidades para ingresar al mercado nuevos productos y servicios. El objetivo primario de nuestra investigaci?n es conocer la intenci?n de emprendimiento en la ciudad de Arequipa y como objetivos secundarios de la investigaci?n est? conocer los factores determinantes de la intenci?n de emprendimiento y las actividades empresariales en las cuales puede existir una mayor intenci?n de emprendimiento
Applied science facilitates the large-scale expansion of protected areas in an Amazonian hot spot
Meeting international commitments to protect 17% of terrestrial ecosystems worldwide will require \u3e3 million square kilometers of new protected areas and strategies to create those areas in a way that respects local communities and land use. In 2000â2016, biological and social scientists worked to increase the protected proportion of Peruâs largest department via 14 interdisciplinary inventories covering \u3e9 million hectares of this megadiverse corner of the Amazon basin. In each landscape, the strategy was the same: convene diverse partners, identify biological and sociocultural assets, document residentsâ use of natural resources, and tailor the findings to the needs of decision-makers. Nine of the 14 landscapes have since been protected (5.7 million hectares of new protected areas), contributing to a quadrupling of conservation coverage in Loreto (from 6 to 23%). We outline the methods and enabling conditions most crucial for successfully applying similar campaigns elsewhere on Earth
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