Actual politics on physical activity challenged by crisis. The Italian case of reaction to the COVID-19 pandemic

[No abstract available

Brain stimulation as a therapeutic tool in Amyotrophic Lateral Sclerosis: current status and interaction with mechanisms of altered cortical excitability

In the last 20 years, several modalities of neuromodulation, mainly based on non-invasive brain stimulation (NIBS) techniques, have been tested as a non-pharmacological therapeutic approach to slow disease progression in amyotrophic lateral sclerosis (ALS). In both sporadic and familial ALS cases, neurophysiological studies point to motor cortical hyperexcitability as a possible priming factor in neurodegeneration, likely related to dysfunction of both excitatory and inhibitory mechanisms. A trans-synaptic anterograde mechanism of excitotoxicity is thus postulated, causing upper and lower motor neuron degeneration. Specifically, motor neuron hyperexcitability and hyperactivity are attributed to intrinsic cell abnormalities related to altered ion homeostasis and to impaired glutamate and gamma aminobutyric acid gamma-aminobutyric acid (GABA) signaling. Several neuropathological mechanisms support excitatory and synaptic dysfunction in ALS; additionally, hyperexcitability seems to drive DNA-binding protein 43-kDA (TDP-43) pathology, through the upregulation of unusual isoforms directly contributing to ASL pathophysiology. Corticospinal excitability can be suppressed or enhanced using NIBS techniques, namely, repetitive transcranial magnetic stimulation (rTMS) and transcranial direct current stimulation (tDCS), as well as invasive brain and spinal stimulation. Experimental evidence supports the hypothesis that the after-effects of NIBS are mediated by long-term potentiation (LTP)-/long-term depression (LTD)-like mechanisms of modulation of synaptic activity, with different biological and physiological mechanisms underlying the effects of tDCS and rTMS and, possibly, of different rTMS protocols. This potential has led to several small trials testing different stimulation interventions to antagonize excitotoxicity in ALS. Overall, these studies suggest a possible efficacy of neuromodulation in determining a slight reduction of disease progression, related to the type, duration, and frequency of treatment, but current evidence remains preliminary. Main limitations are the small number and heterogeneity of recruited patients, the limited "dosage" of brain stimulation that can be delivered in the hospital setting, the lack of a sufficient knowledge on the excitatory and inhibitory mechanisms targeted by specific stimulation interventions, and the persistent uncertainty on the key pathophysiological processes leading to motor neuron loss. The present review article provides an update on the state of the art of neuromodulation in ALS and a critical appraisal of the rationale for the application/optimization of brain stimulation interventions, in the light of their interaction with ALS pathophysiological mechanisms

Cortical circuitry and synaptic dysfunctions in Alzheimer's Disease and other dementias

No abstract availabl

Morphological and Immunohistochemical Description of a Splenic Haemangioma in a Captive European Wolf (<i>Canis lupus lupus</i>) and a Review of the Current Literature

Neoplastic diseases are rarely described in wild carnivores; only a few reports have been published on this topic. Here, we describe the histological and immunohistochemical features of a haemangioma in the spleen of a grey wolf (Canis lupus lupus) and we compare the results with the dog (Canis lupus familiaris). Additionally, we list the different publications found in the literature with neoplastic lesions in wolves. Our results show similar immunohistochemical features to dogs, in which neoplastic cells express Vimentin, von Willebrand factor, alpha smooth muscle actin antibody, vascular endothelial growth factor C and low vascular endothelial growth factor receptor 3. Toluidine blue special stain shows moderated increased numbers of mast cells infiltrating the tumor, a feature observed in benign vascular tumors in domestic dogs, but not in the malignant counterparts. To our knowledge, this is the first article describing the gross, histological and immunohistochemical features of a splenic haemangioma in a wolf

Neurobiological After-Effects of Low Intensity Transcranial Electric Stimulation of the Human Nervous System: From Basic Mechanisms to Metaplasticity

Non-invasive low-intensity transcranial electrical stimulation (tES) of the brain is an evolving field that has brought remarkable attention in the past few decades for its ability to directly modulate specific brain functions. Neurobiological after-effects of tES seems to be related to changes in neuronal and synaptic excitability and plasticity, however mechanisms are still far from being elucidated. We aim to review recent results from in vitro and in vivo studies that highlight molecular and cellular mechanisms of transcranial direct (tDCS) and alternating (tACS) current stimulation. Changes in membrane potential and neural synchronization explain the ongoing and short-lasting effects of tES, while changes induced in existing proteins and new protein synthesis is required for long-lasting plastic changes (LTP/LTD). Glial cells, for decades supporting elements, are now considered constitutive part of the synapse and might contribute to the mechanisms of synaptic plasticity. This review brings into focus the neurobiological mechanisms and after-effects of tDCS and tACS from in vitro and in vivo studies, in both animals and humans, highlighting possible pathways for the development of targeted therapeutic applications

Editorial: Non-invasive Brain Stimulation in the Study and Modulation of Metaplasticity in Neurological Disorders

[No abstract available

New Small Nuclear RNA Gene-Like Transcriptional Units as Sources of Regulatory Transcripts

By means of a computer search for upstream promoter elements (distal sequence element and proximal sequence element) typical of small nuclear RNA genes, we have identified in the human genome a number of previously unrecognized, putative transcription units whose predicted products are novel noncoding RNAs with homology to protein-coding genes. By elucidating the function of one of them, we provide evidence for the existence of a sense/antisense-based gene-regulation network where part of the polymerase III transcriptome could control its polymerase II counterpart

Maternal alexithymia and attachment style: Which relationship with their children's headache features and psychological profile?

Introduction: A growing body of literature has shown an association between somatic symptoms and insecure "attachment style." In a recent study, we found a relationship between migraine severity, ambivalent attachment style, and psychological symptoms in children/adolescents. There is evidence that caregivers' attachment styles and their way of management/expression of emotions can influence children's psychological profile and pain expression. To date, data dealing with headache are scarce. Our aim was to study the role of maternal alexithymia and attachment style on their children's migraine severity, attachment style, and psychological profile. Materials and methods: We enrolled 84 consecutive patients suffering from migraine without aura (female: 45, male: 39; mean age 11.8 ± 2.4 years). According to headache frequency, children/adolescents were divided into two groups: (1) high frequency (patients reporting from weekly to daily attacks), and (2) low frequency (patients having ≤3 episodes per month). We divided headache attacks intensity into two groups (mild and severe pain). SAFA "Anxiety," "Depression," and "Somatization" scales were used to explore children's psychological profile. To evaluate attachment style, the semi-projective test SAT for patients and ASQ Questionnaire for mothers were employed. Maternal alexithymia traits were assessed by TAS-20. Results: We found a significant higher score in maternal alexithymia levels in children classified as "ambivalent," compared to those classified as "avoiding" (Total scale: p = 0.011). A positive correlation has been identified between mother's TAS-20 Total score and the children's SAFA-A Total score (p = 0.026). In particular, positive correlations were found between maternal alexithymia and children's "Separation anxiety" (p = 0.009) and "School anxiety" (p = 0.015) subscales. Maternal "Externally-oriented thinking" subscale correlated with children's school anxiety (p = 0.050). Moreover, we found a correlation between TAS-20 Total score and SAFA-D "Feeling of guilt" subscale (p = 0.014). Our data showed no relationship between TAS-20 and ASQ questionnaires and children's migraine intensity and frequency. Conclusion: Maternal alexithymia and attachment style have no impact on children's migraine severity. However, our results suggest that, although maternal alexithymic traits have no causative roles on children's migraine severity, they show a relationship with patients' attachment style and psychological symptoms, which in turn may impact on migraine severity

Migraine equivalents and related symptoms, psychological profile and headache features:which relationship?

BACKGROUND: Migraine equivalents are common clinical conditions in children suffering from headache. Very few studies dealt with the psychological profile of children/adolescents with migraine equivalents. Our main aim was to compare the psychological profile between migraine children with and without migraine equivalents. Moreover, as secondary aim, exclusively in children with migraine equivalents, we investigated the possible relationship between migraine attack frequency and intensity and psychological factors. METHODS: We enrolled 136 young migraineurs. They were divided in two groups (patients with and without migraine equivalents). The psychological profile was assessed by means of SAFA Anxiety and Somatization questionnaires. RESULTS: Migraine equivalents were present in 101 patients (74.3 %). Anxiety (p = 0.024) and somatization (p = 0.001) levels, but not hypochondria (p = 0.26), were higher in patients with migraine equivalents. In children with migraine equivalents, a low frequency of attacks was related to separation anxiety (p = 0.034). CONCLUSIONS: Migraine equivalents patients tend to feel more fearful and to experience more shyness. This, together with the tendency to somatization, may lead them to become vigilant in attachment relationships with their caregivers

Evaluación para la implementación de certificación orgánica en producción hortícola, en la ciudad de Córdoba

Trabajo Final Integrador (Área de Consolidación Gestión de la Producción de Agroalimentos - Ingeniería Agronómica) – UNC- Facultad de Ciencias Agropecuarias, 2022Frente al sostenido crecimiento de la demanda mundial de productos orgánicos (cereales, papas, hortalizas, frutas, carne, leche, etc.), existen en el territorio argentino muchas posibilidades para este tipo de producción, dado que el nivel de uso de los agroquímicos no ha alcanzado valores críticos de contaminación. La producción orgánica representa una gran oportunidad para la diferenciación y el agregado de valor de los productos hortícolas. Este tipo de producción brinda a los consumidores alimentos libres de agroquímicos, manteniendo la calidad de los productos preservando el medioambiente. En la realidad de los productores hortícolas se observa que cuentan con saberes y conocimientos previos relacionados a la producción agroecológica pero no logran realizar el proceso de certificar sus productos con las normativas establecidas para la certificación orgánica. El presente trabajo fue realizado en el área de Consolidación de Gestión de la Producción de Agroalimentos, de la carrera de Ingeniería Agronómica de la Universidad Nacional de Córdoba. El objetivo general fue evaluar la factibilidad de la implementación de una certificación orgánica en la producción hortícola en el Establecimiento “Circuito Agroecológico” ubicado en la localidad de Uniquillo y la inserción de la producción en el mercado local. Se evaluó el proceso de certificación orgánica, sus costos, los requerimientos, los plazos de cada una de las etapas, la vigencia del sello orgánico y requisitos para la comercialización, para un sistema de producción hortícola. Además, específicamente se analizó la viabilidad productiva y económica de realizar la certificación orgánica de en el establecimiento productivo “Circuito Agroecológico”. La producción orgánica representa una gran oportunidad para la diferenciación y el agregado de valor de los productos hortícolas. Este tipo de producción brinda a los consumidores alimentos libres de agroquímicos y de calidad y para el productor será una oportunidad para incorporar su producción en nuevos mercado y zonas.Fil: Strada, Rafael. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Moyano, Lucas Alberto. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Ranieri, Federico Jesús. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Cuggino Sofia Griselda. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Mondino, María Rosa. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina