Bibliocartografías proyecto editorial de una cartografía digital que integra cinco bibliotecas populares y comunitarias de Colombia

Los comunicadores tenemos la responsabilidad social de responder y dar apoyo a las necesidades que la sociedad colombiana y la comunidad en la que estamos inmersos requiere. Por eso, las herramientas que tenemos en nuestras manos como profesionales deben multiplicarse en ideas y proyectos reales que conlleven al desarrollo del país. En el campo editorial, el papel del editor contempla los procesos de producción del libro desde que llega el manuscrito a la editorial hasta el momento que empieza a circular en las librerías. Todo un proceso de producción que se traduce en indicadores de ventas, estadísticas de lectura, libros que se convierten en bettseller s y autores que logran fama y reconocimiento.Comunicador (a) SocialPregrad

Utilisation des toxines botuliniques pour soulager la douleur réfractaire et d’autres symptômes du parkinsonisme

Background: Parkinson's disease (PD) and other parkinsonian syndromes are chronic, progressive neurodegenerative diseases. With advancing disease, both motor and non-motor symptoms represent a considerable burden and symptom relief and quality of life improvement become the main goal of treatment. Botulinum toxins (BTX) are an effective treatment modality for many neurological conditions. Methods: To understand the potential usefulness of BTX in this population, we performed a retrospective chart review of all patients with a clinical diagnosis of idiopathic PD and atypical parkinsonism who received treatment with BTX injections in our center from 1995 to 2014 for a variety of symptoms. Response to BTX was assessed using a subjective Clinical Global Impression. Results: Records of 160 patients were reviewed. Probable idiopathic PD was the diagnosis in 117 patients (73.1%). The main indication for BTX treatment was pain (50.6% of cases). Other indications were the treatment of functional impairment resulting from dystonia (26.25%), sialorrhea (18.75%), freezing of gait, and camptocormia. Considering pain as indication, 81% of all patients with PD reported benefits after the first BTX injections. This benefit was maintained after the last recorded visit without significant difference in outcome compared with the first injection (p=0.067). Similar results were observed in patients with atypical parkinsonism. Conclusions: Our results confirm the safety and efficacy of different uses of BTX in the symptomatic treatment of patients with parkinsonism even in advanced stages of the disease, and suggest BTX treatment could have a safe and useful role in the treatment of pain in this population.Contexte: La maladie de Parkinson (MP) et les divers syndromes parkinsoniens sont des affections neuro-dégénératives chroniques et évolutives. Avec la progression de la maladie, tant ses symptômes moteurs que ses symptômes non-moteurs finissent par représenter un fardeau considérable. Le soulagement de ces symptômes et l’amélioration de la qualité de vie des patients deviennent alors le principal objectif d’un traitement. À cet égard, les toxines botuliniques (« BTX ») demeurent une modalité de traitement efficace dans le cas de nombreux troubles neurologiques. Méthodes: Afin de comprendre l’utilité potentielle des toxines botuliniques, nous avons procédé à un examen rétrospectif des dossiers de tous les patients qui, après avoir reçu un diagnostic de MP idiopathique et de syndrome parkinsonien atypique, ont bénéficié dans notre centre, de 1995 à 2014, d’un traitement par injection de toxines botuliniques pour toute une gamme de symptômes. La réponse à ces toxines a ensuite été évaluée au moyen de l’échelle Clinical Global Impression. Résultats: Nous avons passé en revue les dossiers de 160 patients. Des cas probables de MP idiopathiques ont été diagnostiqués chez 117 patients (73,1 %). Fait à noter, le soulagement de la douleur était le principal motif justifiant un traitement par injection de toxines botuliniques (50,6 % des cas). D’autres motifs étaient avancés : traiter un handicap fonctionnel résultant de la dystonie (26,25 %), la sialorrhée (18,75 %), des blocages (freezing of gait) et la camptocormie. Si l’on s’en tient à la douleur, 81 % des patients atteints de la MP ont signalé des bienfaits à la suite des premières injections de toxines botuliniques. Ces bienfaits ont perduré après leur dernière visite attestée, et ce, sans qu’on ait observé de différences significatives dans les résultats par rapport à la première injection (p = 0,067). Des résultats identiques ont été constatés chez des patients atteints d’un syndrome parkinsonien atypique. Conclusions: Nos résultats confirment à la fois la sécurité et l’efficacité des différents usages des toxines botuliniques dans le soulagement, même à un stade avancé, des symptômes de patients atteints de parkinsonisme. Ils suggèrent aussi qu’un traitement par injection de toxines botuliniques pourrait, sans danger, jouer un rôle utile dans le traitement de la douleur éprouvée par cette catégorie de patients.Fil: Bruno, Veronica Andrea. University Health Network. Toronto Western Hospital; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Fox, Susan H.. University Health Network. Toronto Western Hospital; CanadáFil: Mancini, Deborah. University Health Network. Toronto Western Hospital; CanadáFil: Miyasaki, Janis M.. University of Alberta; Canad

Automating Wood Species Detection and Classification in Microscopic Images of Fibrous Materials with Deep Learning

We have developed a methodology for the systematic generation of a large image dataset of macerated wood references, which we used to generate image data for nine hardwood genera. This is the basis for a substantial approach to automate, for the first time, the identification of hardwood species in microscopic images of fibrous materials by deep learning. Our methodology includes a flexible pipeline for easy annotation of vessel elements. We compare the performance of different neural network architectures and hyperparameters. Our proposed method performs similarly well to human experts. In the future, this will improve controls on global wood fiber product flows to protect forests

Eurasiens Wirtschaft und Covid-19: Strategien der Krisenbewältigung und Reformaussichten in vier postsowjetischen Staaten

Covid-19 hat die Staaten des postsowjetischen Raums in unterschiedlicher Weise getroffen, doch die Persistenz etablierter wirtschaftspolitischer Strukturen zeigt sich überall - auch dort, wo Reformen unternommen werden. Die russische Führung sieht sich durch die Krise in ihrem Kurs bestätigt und strebt keine strukturellen Reformen an. Usbekistan ist zwar weiter auf Erneuerungskurs, doch im Bestreben, krisen­bedingte Verluste zu kompensieren, wird ein Rückfall in Mechanismen erkenn­bar, die den Reformzielen widersprechen. In der Ukraine ist die Nachhaltigkeit eines eilig umgesetzten Reformpakets gefährdet, das dem Land einen dringend benötig­ten IWF-Kredit verschafft hat. Georgien wiederum versucht, mit seinem bisherigen Wirtschaftsmodell durch die Krise zu steuern, obwohl Covid-19 dessen Vulnerabilität verdeutlicht hat. (Autorenreferat

The impact of long-acting muscarinic antagonists on mucus hypersecretion and cough in chronic obstructive pulmonary disease: a systematic review

: Patients suffering from chronic obstructive pulmonary disease (COPD) clinically manifest airway mucus hypersecretion as sputum expectoration and cough. Evidence accumulated in the past decade has shown that the cholinergic system not only regulates airway smooth muscle contraction but also the activity of inflammatory and airway epithelial cells, including goblet cells, and submucosal gland activity. Long-acting muscarinic antagonists (LAMAs) with the most favourable M3/M2 muscarinic acetylcholine (ACh) receptors residency properties are not only excellent bronchodilators but potentially also mucus-modifying agents, able to positively impact on mucus hypersecretion and cough. The aim of this systematic review was to investigate the impact of LAMAs on mucus hypersecretion and cough in COPD patients. The evidence confirmed that LAMAs, mainly tiotropium and aclidinium, improved sputum production and cough in moderate to severe COPD. Thus, LAMAs not only antagonise the ACh-induced bronchoconstriction of the airways but also appear to limit the production of mucus secreted in response to ACh by airway goblet cells and/or submucosal glands. Further clinical studies are necessary to evaluate the impact of LAMAs exclusively on sputum symptoms and cough as primary end-points and to investigate whether LAMAs have a modulatory action on the rheological properties of mucus

The family mealtime observation study (FaMOS): Exploring the role of family functioning in the association between mothers' and fathers' food parenting practices and children's nutrition risk

This cross-sectional study explores associations between mothers' and fathers' food parenting practices and children's nutrition risk, while examining whether family functioning modifies or confounds the association. Home observations assessed parents' food parenting practices during dinnertime (n = 73 families with preschoolers). Children's nutrition risk was calculated using NutriSTEP®. Linear regression models examined associations between food parenting practices and NutriSTEP® scores. An interaction term (family functioning × food parenting practice) explored effect modification; models were adjusted for family functioning to explore confounding. Among mothers, more frequent physical food restriction was associated with higher nutrition risk in their children (β = 0.40 NutriSTEP® points, 95% Confidence Interval (CI) = 2.30, 7.58) and among both mothers and fathers, positive comments about the target child's food were associated with lower nutrition risk (mothers: β = -0.31 NutriSTEP® points, 95% CI = -0.54, -0.08; fathers: β = -0.27 NutriSTEP® points, 95% CI = -0.75, -0.01) in models adjusted for parent education and child Body Mass Index (BMI) z-score. Family functioning did not modify these associations and they remained significant after adjustment for family functioning. Helping parents to use positive encouragement rather than restriction may help to reduce their children's nutrition risk

The germline of the malaria mosquito produces abundant miRNAs, endo-siRNAs, piRNAs and 29-nt small RNA

BACKGROUND Small RNAs include different classes essential for endogenous gene regulation and cellular defence against genomic parasites. However, a comprehensive analysis of the small RNA pathways in the germline of the mosquito Anopheles gambiae has never been performed despite their potential relevance to reproductive capacity in this malaria vector. RESULTS We performed small RNA deep sequencing during larval and adult gonadogenesis and find that they predominantly express four classes of regulatory small RNAs. We identified 45 novel miRNA precursors some of which were sex-biased and gonad-enriched , nearly doubling the number of previously known miRNA loci. We also determine multiple genomic clusters of 24-30 nt Piwi-interacting RNAs (piRNAs) that map to transposable elements (TEs) and 3'UTR of protein coding genes. Unusually, many TEs and the 3'UTR of some endogenous genes produce an abundant peak of 29-nt small RNAs with piRNA-like characteristics. Moreover, both sense and antisense piRNAs from TEs in both Anopheles gambiae and Drosophila melanogaster reveal novel features of piRNA sequence bias. We also discovered endogenous small interfering RNAs (endo-siRNAs) that map to overlapping transcripts and TEs. CONCLUSIONS This is the first description of the germline miRNome in a mosquito species and should prove a valuable resource for understanding gene regulation that underlies gametogenesis and reproductive capacity. We also provide the first evidence of a piRNA pathway that is active against transposons in the germline and our findings suggest novel piRNA sequence bias. The contribution of small RNA pathways to germline TE regulation and genome defence in general is an important finding for approaches aimed at manipulating mosquito populations through the use of selfish genetic elements

Outcomes associated with SARS-CoV-2 reinfection in individuals with natural and hybrid immunity

BACKGROUND: Studies comparing SARS-CoV-2 reinfection outcomes among individuals with previous infection (natural immunity) and previous infection plus vaccination (hybrid immunity) are limited. METHODS: Retrospective cohort study comparing SARS-CoV-2 reinfection among patients with hybrid immunity (cases) and natural immunity (controls) from March 2020 to February 2022. Reinfection was defined as positive PCR\u3e 90 days after initial laboratory-confirmed SARS-CoV-2 infection. Outcomes included time to reinfection, symptom severity, COVID-19-related hospitalization, critical COVID-19 illness (need for intensive care unit, invasive mechanical ventilation, or death), length of stay (LOS). RESULTS: A total of 773 (42%) vaccinated and 1073 (58%) unvaccinated patients with reinfection were included. Most patients (62.7%) were asymptomatic. Median time to reinfection was longer with hybrid immunity (391 [311-440] vs 294 [229-406] days, p \u3c 0.001). Cases were less likely to be symptomatic (34.1% vs 39.6%, p = 0.001) or develop critical COVID-19 (2.3% vs 4.3%, p = 0.023). However, there was no significant difference in rates of COVID-19-related hospitalization (2.6% vs 3.8%, p = 0.142) or LOS (5 [2-9] vs 5 [3-10] days, p = 0.446). Boosted patients had longer time to reinfection (439 [IQR 372-467] vs 324 [IQR 256-414] days, p \u3c 0.001) and were less likely to be symptomatic (26.8% vs 38%, p = 0.002) compared to unboosted patients. Rates of hospitalization, progression to critical illness and LOS were not significantly different between the two groups. CONCLUSIONS: Natural and hybrid immunity provided protection against SARS-CoV-2 reinfection and hospitalization. However, hybrid immunity conferred stronger protection against symptomatic disease and progression to critical illness and was associated with longer time to reinfection. The stronger protection conferred by hybrid immunity against severe outcomes due to COVID-19 should be emphasized with the public to further the vaccination effort, especially in high-risk individuals

N1-acetylspermidine is a determinant of hair follicle stem cell fate

Stem cell differentiation is accompanied by increased mRNA translation. The rate of protein biosynthesis is influenced by the polyamines putrescine, spermidine and spermine, which are essential for cell growth and stem cell maintenance. However, the role of polyamines as endogenous effectors of stem cell fate and whether they act through translational control remains obscure. Here, we investigate the function of polyamines in stem cell fate decisions using hair follicle stem cell (HFSC) organoids. Compared to progenitor cells, HFSCs showed lower translation rates, correlating with reduced polyamine levels. Surprisingly, overall polyamine depletion decreased translation but did not affect cell fate. In contrast, specific depletion of natural polyamines mediated by spermidine/spermine N1-acetyltransferase (SSAT; also known as SAT1) activation did not reduce translation but enhanced stemness. These results suggest a translation-independent role of polyamines in cell fate regulation. Indeed, we identified N1-acetylspermidine as a determinant of cell fate that acted through increasing self-renewal, and observed elevated N1-acetylspermidine levels upon depilation-mediated HFSC proliferation and differentiation in vivo. Overall, this study delineates the diverse routes of polyamine metabolism-mediated regulation of stem cell fate decisions. This article has an associated First Person interview with the first author of the paper.Peer reviewe