Expansion of the geographic range of Cyatta abscondita Sosa-Calvo et al., 2013 (Hymenoptera: Formicidae)

The presence of the recently described fungus-farming ant genus and species Cyatta abscondita is reported in the northwestern region of Misiones Province in Argentina. A single worker of C. abscondita was collected in a pitfall trap in a mature plantation of Pinus taeda in the Atlantic Forest biome. This finding expands the distribution of the genus and species, extending it farther south in the Neotropics.Fil: Ramos, Carolina Samanta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Santoandre, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Sanchez, Federico Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; ArgentinaFil: Zurita, Gustavo Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Biología Subtropical. Universidad Nacional de Misiones. Instituto de Biología Subtropical; ArgentinaFil: Filloy, Julieta. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentin

Post-Learning Molecular Reactivation Underlies Taste Memory Consolidation

It is considered that memory consolidation is a progressive process that requires post-trial stabilization of the information. In this regard, it has been speculated that waves of receptors activation, expression of immediate early genes, and replenishment of receptor subunit pools occur to induce functional or morphological changes to maintain the information for longer periods. In this paper, we will review data related to neuronal changes in the post-acquisition stage of taste aversion learning that could be involved in further stabilization of the memory trace. In order to achieve such stabilization, evidence suggests that the functional integrity of the insular cortex (IC) and the amygdala (AMY) is required. Particularly the increase of extracellular levels of glutamate and activation of N-methyl-d-aspartate (NMDA) receptors within the IC shows a main role in the consolidation process. Additionally the modulatory actions of the dopaminergic system in the IC appear to be involved in the mechanisms that lead to taste aversion memory consolidation through the activation of pathways related to enhancement of protein synthesis such as the Protein Kinase A pathway. In summary, we suggest that post-acquisition molecular and neuronal changes underlying memory consolidation are dependent on the interactions between the AMY and the IC

Musculoskeletal pain in family caregivers: Does a therapeutic physical program in primary care work? A randomized controlled trial

Producción CientíficaBackground: Family caregivers play a crucial role in the overall healthcare system and in our society. The elderly population is significantly increasing, which creates a high demand for family caregivers. Few studies have investigated the impact of caregiving on musculoskeletal pain or proposed an active approach for dealing with it. Objectives: To determine and characterize musculoskeletal pain in female family caregivers (FFCs) and assess the effects of adding a therapeutic exercise program to a family caregiver care program (FCCP) on the quality of life, physical conditions, and psychological well-being of FFCs. Methods: A multicenter randomized controlled clinical trial was conducted with 68 FFCs recruited in two public healthcare areas. The intervention and control groups received the same conventional FCCP for 6 h across 4 sessions. The intervention group received an additional 36 sessions of physical therapeutic exercise (PTE) program over 12 weeks. Results: All caregivers reported having pain in particular locations. Lower back pain and neck pain were the locations most frequently cited, with a prevalence of 69.4% and 56.7%, respectively. In total, 80% of participants presented moderate pain intensity. The intervention group showed a significant decrease in the intensity of the pain (p < 0.001), as well as in anxiety, depression, subjective burden perception (p < 0.01), and quality-of-life variables, including MCS (mental component summary) (p < 0.05) and PCS (physical component summary) (p < 0.001). Conclusions: A PTE program improved the musculoskeletal pain of FFCs in a clinically relevant way. The caregivers who improved the most were those who initially presented the most intense pain, had the greatest levels of disability, and had the lowest quality of life.Colegio Profesional de Fisioterapeutas de Castilla y León (CPFCyL) - (grant INV 2019-11

Effects of a family caregiver care programme in musculoskeletal pain and disability in the shoulder-neck region—A randomised clinical trial

Producción CientíficaLife expectancy in Spain has increased and older people need more health care to improve their quality of life. The high demands of the population sometimes collapse health services, making them insufficient to cover their needs, which leads to the development of “non-professional caregivers”. These caregivers have suffered musculoskeletal injuries of the cervical spine and shoulders and should be guided and assessed on ergonomics, biomechanics, or kinesiotherapy. However, there are no interventions to help them care for themselves. This study presents the application of a physical exercise programme to prevent these disorders in women caregivers of dependent patients. It consists of a randomised controlled clinical trial with two groups: both received a family caregiver care programme, and the intervention group also received a physical therapeutic exercise programme for 12 weeks. A total of 62 caregivers completed the study, who were mostly daughters or wives of dependents. Of these, 70.97% presented a “moderate” pain intensity and a cervical disability of 13.72 ± 7.64 points in the NDI questionnaire in the initial evaluation. In the intervention group of caregivers, there was a significant decrease in the pain intensity and a significant increase (p < 0.05) in all cervical joint amplitude movements. Caregivers present a high prevalence of musculoskeletal disorders. The physical exercise programme was effective in reducing the intensity of pain, lumbar disability, and cervical disability of the family caregivers.Colegio Profesional de Fisioterapeutas de Castilla y León (CPFCyL) - (grant INV 2019-11

Odonata de los Esteros del Iberá (Corrientes, Argentina): inventario preliminar y biodiversidad

A preliminary inventory of the Odonata from Iberá Wetlands and their area of influence (Corrientes, Argentina) is presented. Different kinds of environments were surveyed in seven localities. Seventy five species grouped in 33 genera and seven families were registered, from which three genera and 10 species are new records for the country. The localities belonging to the Iberá Wetland system show low endemicity and a high faunistic relationship with the Paraná basin.Se presenta un inventario preliminar de los Odonata de los Esteros del Iberá, así como su área de influencia (Corrientes, Argentina). Distintos tipos de ambientes fueron muestreados en siete localidades. Se registraron setenta y cinco especies agrupadas en 33 géneros y siete familias, de las cuales tres géneros y 10 especies son nuevos registros para el país. Las localidades que pertenecen al sistema de Esteros del Iberá, muestran bajos niveles de endemismo y una similitud faunística elevada con la cuenca del Paraná.Fil: Muzon, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; ArgentinaFil: Von Ellenrieder, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; ArgentinaFil: Pessacq, Pablo. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Lozano, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; ArgentinaFil: Garré, Analía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; ArgentinaFil: Lambruschini, Juliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; ArgentinaFil: Ramos, Lia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; ArgentinaFil: Weigel Muñoz, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Limnología "Dr. Raúl A. Ringuelet". Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Limnología; Argentin

The Odonata of Argentina: state of knowledge and updated checklist

An updated checklist of the 282 species of Odonata known to occur in Argentina is presented along with distributional information by province and ecoregion. Ten new records for the country and 87 new provincial records are provided. At present, 17 species of Odonata are considered endemic to Argentina, and distribution maps for each of them are provided. Information on larvae and conservation status according to the IUCN Red List of Threatened species is also provided; there are still 98 larvae unknown and 169 species unassessed.Fil: Lozano, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Avellaneda; ArgentinaFil: del Palacio, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Avellaneda; ArgentinaFil: Ramos, L.. Universidad Nacional de Avellaneda; ArgentinaFil: Muzon, Javier. Universidad Nacional de Avellaneda; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Observing the Onset of Effective Mass

The response of a particle in a periodic potential to an applied force is commonly described by an effective mass which accounts for the detailed interaction between the particle and the surrounding potential. Using a Bose-Einstein condensate of 87-Rb atoms initially in the ground band of an optical lattice, we experimentally show that the initial response of a particle to an applied force is in fact characterized by the bare mass. Subsequently, the particle response undergoes rapid oscillations and only over timescales long compared to that of the interband dynamics is the effective mass observed to be an appropriate description

Sustitución nucleofílica aromática con complejos metal(II)-aminas bifuncionales en tolueno: Determinaciones cinéticas y cálculos químico cuánticos

Se realizaron estudios cinéticos de Sustitución Nucleofílica Aromática (SNAr) empleando complejos Metal(II)-amina entolueno y cálculos químicos cuánticos para determinar la geometría y energía deformación de los complejos. Los estudios previamente informados del mecanismo SNAr se centran principalmente en la naturaleza del sustrato, la basicidad delnucleófilo y la polaridad del disolvente, aunque el estudio con complejos de coordinación es escaso. Los complejos metal-amina exhiben una reactividad diferencial con respecto a las aminas no complejadas dependiendo, principalmente, del metal y la estructura del ligando. El presente trabajo describe estudios cinéticos realizados en tolueno con 1-cloro-2,4-dinitrobenceno y complejos de Cu(II) y Fe(II) con aminas bifuncionales, y se compararon con estudios previos utilizando las aminas no complejadas. Considerando la diferente reactividad de los complejos metal-amina, los resultados sugieren una diferente labilidad de los complejos atribuidos al efecto quelato y efectos estereoelectrónicos, para formar aminas no complejadas que luego reaccionarían con el sustrato, ya que los resultados cinéticos no proporcionan evidencia que los complejos metal-amina reaccionan como entidad nucleofílica. Por el contrario, se disocian antes de reaccionar y los resultados obtenidos son consistentes con elmecanismo del "Nucleófilo Dímero". Mediante cálculos teóricos basados en la Teoría Funcional Densidad determinamos la estructura de equilibrio y energíade complejación de dichos complejos. Los cálculos teóricos indican que los complejos más estables son aquellos con tres moléculas de amina como ligando, y que los complejos de Cu(II) son más estables que los de Fe(II), resultados que se correlacionan con el orden de reactividad obtenido experimentalmente.Kinetic studies of Aromatic Nucleophilic Substitutions (ANS) of Metal(II)-amine complexes in toluene and quantum chemical calculations were carried out. Reported studies of ANS mechanism are mainly centered on the nature of substrates, nucleophile basicity and solvent polarity, while the study with coordination complexes are scarce. Amine complexes exhibit a differential reactivity with respect to uncomplexed amines depending on, among other factors, the metal center and the ligand structure. The present work describes kinetic studies carried out in toluene with 1-chloro-2,4-dinitrobenzene (DNClB) and Cu(II) and Fe(II) complexes with bifunctional amines. They were chosen considering their characteristics of bi-dentate ligands, the possible size of the metalo-cycle formed and their ability to form intra- or intermolecular hydrogen-bonds. Taking into account the dissimilar reactivity of amine-complexes, the results suggest a different stability of the complexes attributed to stereo-electronic and chelate effects, to form uncomplexed amines that would then react with the substrate, since the observed results do not provide evidence that metal-amine complexes react as a nucleophilic entity. On the contrary, they seem to dissociate prior to react rendering results consistent with a “dimer nucleophile” mechanism. To interpret kinetic results, we performed Density Functional Theory calculations to determine the equilibrium structure and the binding energy for Cu(II) and Fe(II) amine complexes. Quantum chemical calculations indicate that the most stable complexes are those with three amines molecules as ligands, and that Cu(II) complexes are more stable than those with Fe(II), results that correlate with the order of reactivity experimentally obtained.Fil: Alvaro, Cecilia Elisabeth Silvana. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas. Universidad Nacional del Comahue. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; ArgentinaFil: Bergero, Federico Daniel. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Física; ArgentinaFil: Bolcic, Federico Martin. Universidad Nacional del Comahue. Facultad de Medicina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Ramos, Susana Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas. Universidad Nacional del Comahue. Instituto de Investigación y Desarrollo en Ingeniería de Procesos, Biotecnología y Energías Alternativas; Argentina. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Física; ArgentinaFil: Nudelman Norma S.. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Orgánica; Argentin