Research Note: Bovine lactoferrin in chickens: an investigation into its viability as an antibiotic alternative.

Finding effective antibiotic alternatives is crucial to managing the re-emerging health risk of Clostridium perfringens (CP) type A/G-induced avian necrotic enteritis (NE), a disease that has regained prominence in the wake of governmental restrictions on antibiotic use in poultry. Known for its antimicrobial and immunomodulatory effects, the use of bovine lactoferrin (bLF) in chickens is yet to be fully explored. In this study, we hypothesized that bLF can accumulate in the small intestines of healthy chickens through gavage and intramuscular supplementation and serves as a potential antibiotic alternative. Immunohistochemistry located bLF in various layers of the small intestines and ELISA testing confirmed its accumulation. Surprisingly, sham-treated chickens also showed the presence of bLF, prompting a western blotting analysis that dismissed the notion of cross-reactivity between bLF and the avian protein ovotransferrin. Although the significance of the route of administration remains inconclusive, this study supports the hypothesis that bLF is a promising and safe antibiotic alternative with demonstrated resistance to the degradative environment of the chicken intestines. Further studies are needed to determine its beneficial pharmacological effects in CP-infected chickens.

Description of a Swine Infant Model of Volume-Controlled Hemorrhagic Shock.

Hemorrhagic shock is a leading cause of morbidity and mortality in pediatric patients. Interpretation of the clinical indicators validated in adults to guide resuscitation and comparison between different therapies is difficult in children due to the inherent heterogeneity of this population. As a result, compared to adults, appropriate management of pediatric hemorrhagic shock is still not well established. In addition, the scarcity of pediatric patients with hemorrhagic shock precludes the development of clinically relevant studies. For this reason, an experimental pediatric animal model is necessary to study the effects of hemorrhage in children as well as their response to different therapies. We present an infant animal model of volume-controlled hemorrhagic shock in anesthetized young pigs. Hemorrhage is induced by withdrawing a previously calculated blood volume, and the pig is subsequently monitored and resuscitated with different therapies. Here, we describe a precise and highly reproducible model of hemorrhagic shock in immature swine. The model yields hemodynamic data that characterizes compensatory mechanisms that are activated in response to severe hemorrhage.

Conhecimento e experiências vividas por cirurgiões-dentistas quanto à importunação sexual e perseguição em Pernambuco, Brasil / Knowledge and experiences lived by dentists regarding sexual harassment and persecution in Pernambuco, Brazil

Importunação Sexual e Perseguição são práticas configuradas como crime pelo Código Penal Brasileiro - CPB. Sendo o tema pouco explorado na área da saúde, este trabalho teve como objetivo verificar o nível de conhecimento do cirurgião-dentista atuante no estado de Pernambuco (Brasil), sobre estes dois tipos penais, suas experiências no exercício profissional e atitudes tomadas para resolutividade da questão. Para isto foi realizado estudo descritivo de corte transversal, com aplicação de um questionário online semiestruturado, através da plataforma Google Forms®, utilizando a metodologia "bola de neve", sendo coletados dados sociodemográficos, questões relacionadas ao conhecimento de Importunação Sexual e Perseguição, e por fim, questões relacionadas a experiências sofridas no exercício de sua profissão. Foram incluídos neste estudo 69 questionários, 22% respondidos por homens e 78% por mulheres. A maioria dos participantes respondeu que já ouviu falar sobre Importunação Sexual e sobre Perseguição, no entanto, grande parte demonstrou dificuldade em reconhecer a definição de Importunação, estabelecida pelo CPB. Os que informaram ter tido vivência com algum destes tipos penais, relataram que contaram o fato a um amigo, a algum familiar ou não fizeram nada a respeito. Conclui-se sobre existência de situações dentro da prática profissional odontológica que podem configurar, sobretudo, o crime de Importunação sexual. E, contar a um amigo, a um familiar ou mesmo não fazer nada a respeito foram as atitudes mais comumente realizadas por estes profissionais

Sexual Harassment and persecution are acts configured as a crime by the Brazilian Penal Code - CPB. As the subject is little explored in the health area, this work aimed to verify the level of knowledge of the dentists working in the state of Pernambuco (Brazil), about these two criminal types, their experiences in professional practice and attitudes taken to resolve the issue. For this, a descriptive cross-sectional study was carried out, with the application of a semi-structured online questionnaire, through the google forms platform, using the "snowball" methodology, collecting sociodemographic data, questions related to the knowledge of sexual harassment and persecution, and by finally, questions related to the experiences suffered in the exercise of their profession. 69 questionnaires were included in this study, 22% answered by men and 78% by women. Most participants answered that they had already heard about sexual harassment and persecution, however, most of them showed difficulty in recognizing the definition of harassment, established by the CPB. Those who reported having had experience with one of these criminal types, reported that they told the fact to a friend, to a family member or did nothing about it. It concludes on the existence of situations within professional dental practice that can configure, above all, the crime of sexual harassment. And telling a friend, a family member or even doing nothing about it were the attitudes most commonly performed by these professionals

[Leukocytoclastic vasculitis as an adverse effect of propylthiouracil. A case report]. / Vasculitis leucocitoclástica como efecto adverso del propiltiouracilo. Reporte de un caso.

BACKGROUND: The most common cause of hyperthyroidism is Graves' disease. Propylthiouracil (PTU) is one of the drugs used to treat this disease. Leukocytoclastic vasculitis is described among dermatologic adverse effects of PTU. CASE REPORT: A 18-year-old woman, allergic to methimazole, developed a vasculitis associated to ANCAs with characteristics of leukocytoclastic vasculitis, associated to PTU treatment. She did not present systemic involvement. PTU treatment was suspended. Two months later, the skin lesions had almost completely resolved. CONCLUSIONS: Leukocytoclastic vasculitis should be considered in the spectrum of complications caused by the consumption of propylthiouracil. The lesions can manifest over time, from a few weeks to years after taking the drug. When there is no systemic involvement, propylthiouracil suspension is sufficient to cure the disease.

ANTECEDENTES: La causa más frecuente de hipertiroidismo es la enfermedad de Graves. El propiltiouracilo es uno de los medicamentos más prescritos para esta enfermedad. Uno de los efectos adversos dermatológicos del propiltiouracilo es la vasculitis leucocitoclástica. REPORTE DE CASO: Paciente femenina de 18 años, alérgica al metamizol, con vasculitis asociada a ANCAs, con características de vasculitis leucocitoclástica provocada por el consumo de propiltiouracilo. No se observó afectación sistémica. Dos meses después de suspender el propiltiouracilo desaparecieron casi por completo las lesiones en la piel. CONCLUSIONES: La vasculitis leucocitoclástica debe considerarse en el espectro de complicaciones provocadas por el consumo de propiltiouracilo. Las lesiones pueden manifestarse con el paso del tiempo, desde unas semanas hasta años después de consumir el fármaco. Cuando no existe afectación sistémica, la suspensión del propiltiouracilo es suficiente para detener la enfermedad.

Dodonaea viscosa Jacq. induces cytotoxicity, antiproliferative activity, and cell death in colorectal cancer cells via regulation of caspase 3 and p53.

Colorectal cancer (CRC) is the third most common cancer diagnosed worldwide and is the second leading cause of cancer-related death due to an insufficiency prognosis and is generally diagnosed in the last step of development. The Peruvian flora has a wide variety of medicinal plants with therapeutic potential in several diseases. Dodonaea viscosa Jacq. is a plant used to treat inflammatory process as well as gastrointestinal diseases. The aim of this study was to examine the cytotoxic, antiproliferative, and cell death-inducing effects of D. viscosa on colorectal cancer cells (SW480 and SW620). The hydroethanolic extract was obtained by maceration at 70% ethanol, the phytochemical constituents were identified by LC-ESI-MS. D. viscosa revealed 57 compounds some of them are: isorhamnetin, kaempferol, quercetin, methyl dodovisate B, hardwickiic acid, viscosol, and dodonic acid. Regarding the antitumoral activity, D. viscosa induced cytotoxic and antiproliferative activity in both SW480 and SW620 cancer cells, accompanied with, important changes in mitochondrial membrane potential, formation of the Sub G0/G1 population and increasing levels of apoptotic biomarkers (caspase 3 and the tumor suppressor protein p53) in the metastatic derivative cell line (SW620), suggesting an intrinsic apoptotic process after the treatment with the hydroethanolic extract of D. viscosa.

The Essential Oil of Petroselinum crispum (Mill) Fuss Seeds from Peru: Phytotoxic Activity and In Silico Evaluation on the Target Enzyme of the Glyphosate Herbicide.

Petroselinum crispum (Mill) Fuss is an aromatic plant belonging to the Apiaceae family and used in gastronomy as a spice. Several studies have been developed in leaves but studies are limited in seeds, especially the essential oils obtained from seeds. The aim of this study was to determine the phytochemical profile of the volatile compounds of this essential oil by gas-chromatography-mass spectrometry (GC-MS) in order to evaluate its phytotoxic activity on Lactuca sativa seeds and to carry out an in silico analysis on the target enzyme of the herbicide glyphosate 5-enolpyruvylshikimate 3-phosphate synthase (EPSP). The essential oil was obtained by steam distillation for two hours and then was injected into a GC-MS, the phytotoxic assay was carried out on Lactuca seeds and the in silico evaluation on the EPSP synthase focused on the volatile compounds similar to glyphosate, docking analysis, and molecular dynamics to establish the protein-ligand stability of the most active molecule. The chromatographic analysis revealed 47 compounds, predominated by three compounds with the most abundant percentage in the total content (1,3,8-ρ-menthatriene (22.59%); apiole (22.41%); and ß-phellandrene (15.02%)). The phytotoxic activity demonstrated that the essential oil had a high activity at 5% against L. sativa seed germination, inhibition of root length, and hypocotyl length, which is comparable to 2% glyphosate. The molecular docking on EPSP synthase revealed that trans-p-menth-6-en-2,8-diol had a high affinity with the enzyme EPSP synthase and a better stability during the molecular dynamic. According to the results, the essential oil of P. crispum seeds presented a phytotoxic activity and might be useful as a bioherbicide agent against weeds.

Volatile Components, Antioxidant and Phytotoxic Activity of the Essential Oil of Piper acutifolium Ruiz & Pav. from Peru.

Piper acutifolium Ruiz & Pav is known as "matico" and belongs to the Piperaceae family, and in Peru it is traditionally used as an infusion or decoction to ameliorate wound healings or ulcers. In this study, the aim was to investigate the volatile components, the antioxidant profile, and the phytotoxic activity of the essential oil (EO) of P. acutifolium from Peru. To identify the phytoconstituents, the EO was injected into a Gas Chromatography-Mass Spectrometry (GC-MS) to obtain the chemical profile of the volatile components, followed by the antioxidant activity carried out by the reaction with three organic radicals (2,2-diphenyl-1-picrylhydrazyl (DPPH); 2,2'-azinobis-(3-ethylbenzothiazoline)-6- sulfonic acid (ABTS); ferric reducing/antioxidant power (FRAP)). Finally, the phytotoxic capabilities of the EO were tested on two model plants, Lactuca sativa seeds and Allium cepa bulbs. As a result, the analysis identified α-phellandrene as its main volatile chemical at 38.18%, followed by ß-myrcene (29.48%) and ß-phellandrene (21.88%). Regarding the antioxidant profile, the half inhibitory concentration (IC50) in DPPH was 160.12 ± 0.30 µg/mL, for ABTS it was 138.10 ± 0.06 µg/mL and finally in FRAP it was 450.10 ± 0.05 µg/mL. The phytotoxic activity demonstrated that the EO had high activity at 5% and 10% against L. sativa seed germination, the inhibition of root length, and hypocotyl length. Additionally, in A. cepa bulbs, the inhibition root length was obtained at 10%, both comparable to glyphosate, which was used as a positive control. The molecular docking on 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) revealed that α-phellandrene had -5.8 kcal/mol, being near to glyphosate at -6.3 kcal/mol. The conclusion shows that the EO of P. acutifolium presented antioxidant and phytotoxic activity and might be useful as a bioherbicide in the future.

Oxidative Stress and Epigenetics: miRNA Involvement in Rare Autoimmune Diseases.

Autoimmune diseases (ADs) such as Sjögren's syndrome, Kawasaki disease, and systemic sclerosis are characterized by chronic inflammation, oxidative stress, and autoantibodies, which cause joint tissue damage, vascular injury, fibrosis, and debilitation. Epigenetics participate in immune cell proliferation and differentiation, which regulates the development and function of the immune system, and ultimately interacts with other tissues. Indeed, overlapping of certain clinical features between ADs indicate that numerous immunologic-related mechanisms may directly participate in the onset and progression of these diseases. Despite the increasing number of studies that have attempted to elucidate the relationship between miRNAs and oxidative stress, autoimmune disorders and oxidative stress, and inflammation and miRNAs, an overall picture of the complex regulation of these three actors in the pathogenesis of ADs has yet to be formed. This review aims to shed light from a critical perspective on the key AD-related mechanisms by explaining the intricate regulatory ROS/miRNA/inflammation axis and the phenotypic features of these rare autoimmune diseases. The inflamma-miRs miR-155 and miR-146, and the redox-sensitive miR miR-223 have relevant roles in the inflammatory response and antioxidant system regulation of these diseases. ADs are characterized by clinical heterogeneity, which impedes early diagnosis and effective personalized treatment. Redox-sensitive miRNAs and inflamma-miRs can help improve personalized medicine in these complex and heterogeneous diseases.

Smart Schools and the Family-School Relationship: Teacher Profiles for the Promotion of Family Involvement.

Smart schools prioritise work in the educational community, identifying the participation of families as an opportunity, rather than a form of intrusiveness. There are currently a multitude of ways of sharing education with families, ranging from communication to training, with teachers being the driving force in promoting the different roles that families can assume. In this respect, the aim of this cross-sectional, evaluative, non-experimental and quantitative study is to establish the family participation facilitation profiles of 542 teachers working in schools in a multicultural municipality in the autonomous community of the Region of Murcia, in south-eastern Spain. They completed a validated questionnaire with 91 items regarding the different dimensions of family participation, carrying out a cluster analysis to determine the teacher facilitation profiles. The results obtained from the application of the questionnaire show two statistically differentiated teaching profiles. The first of these, with a smaller number of teachers, with fewer years of experience and linked to the pre-primary and secondary stages in public schools, shows less participation in all the modalities considered. In contrast, the profile with the greatest commitment to promoting participation is characterised by having a greater number of teachers, predominantly from state-subsidised centres, that are experienced and linked to the primary stage. In relation to the previous literature, it was possible to confirm the presence of a differentiated profile, finding, on the one hand, teachers interested in the involvement of families and, on the other hand, teachers who do not identify the family-school relationship as a priority. This highlights the need to improve the prior and ongoing training of teachers to raise awareness and sensitise them to the inclusion of families in the educational community.

Extracellular histones trigger oxidative stress-dependent induction of the NF-kB/CAM pathway via TLR4 in endothelial cells.

Extracellular histones have been reported to aggravate different pathophysiological processes by increasing vascular permeability, coagulopathy, and inflammation. In the present study, we elucidate how extracellular histones (10-100 µg/mL) concentration dependently increase cytosolic reactive oxygen species (ROS) production using human umbilical vein endothelial cells (HUVECs). Furthermore, we identify cyclooxygenase (COX) and NADPH oxidase (NOX) activity as sources of ROS production in extracellular histone-treated HUVEC. This COX/NOX-mediated ROS production is also involved in enhanced NF-kB activity and cell adhesion molecules (VCAM1 and ICAM1) expression in histone-treated HUVEC. Finally, by using different toll-like receptor (TLR) antagonists, we demonstrate the role of TLR4 in CAMs overexpression triggered by extracellular histones in endothelial cells. In conclusion, our data suggest that through TLR4 signaling, extracellular histones increase endothelial cell activation, a mechanism involving increased COX- and NOX-mediated ROS. These findings increase our understanding on how extracellular histones enhance systemic inflammatory responses in diseases in which histone release occurs as part of the pathological processes.

Identification of circulating miRNAs differentially expressed in patients with Limb-girdle, Duchenne or facioscapulohumeral muscular dystrophies.

BACKGROUND: Limb-girdle muscular dystrophy (LGMD) is a rare neuromuscular disease including a growing and heterogeneous number of subtypes with variable phenotype. Their clinical and histopathological characteristics frequently overlap with other neuromuscular dystrophies. Our goal was to identify, by a non-invasive method, a molecular signature including biochemical and epigenetic parameters with potential value for patient prognosis and stratification. RESULTS: Circulating miRNome was obtained by smallRNA-seq in plasma from LGMD patients (n = 6) and matched-controls (n = 6). Data, validated by qPCR in LGMD samples, were also examined in other common muscular dystrophies: Duchenne (DMD) (n = 5) and facioscapulohumeral muscular dystrophy (FSHD) (n = 4). Additionally, biochemical and clinical parameters were analyzed. miRNome analysis showed that thirteen differentially expressed miRs could separate LGMD vs control group by hierarchical clustering. Most of differentially expressed miRs in LGMD patients were up-regulated (miR-122-5p, miR-122b-3p, miR-6511a-3p, miR-192-5p, miR-574-3p, mir-885-3p, miR-29a-3p, miR-4646-3p, miR-203a-3p and miR-203b-5p) whilst only three of sequenced miRs were significantly down-regulated (miR-19b-3p, miR-7706, miR-323b-3p) when compared to matched controls. Bioinformatic analysis of target genes revealed cell cycle, muscle tissue development, regeneration and senescence as the most affected pathways. Four of these circulating miRs (miR-122-5p, miR-192-5p, miR-19b-3p and miR-323b-3p), together with the myomiR miR-206, were further analysed by qPCR in LGMD, DMD and FSHD. The receiver operating characteristic curves (ROC) revealed high area under the curve (AUC) values for selected miRs in all groups, indicating that these miRs have good sensitivity and specificity to distinguish LGMD, DMD and FSHD patients from healthy controls. miR-122-5p, miR-192-5p and miR-323-3p were differentially expressed compared to matched-controls in all groups but apparently, each type of muscular dystrophy showed a specific pattern of miR expression. Finally, a strong correlation between miRs and biochemical data was only found in LGMD patients: while miR-192-5p and miR-122-5p negatively correlated with CK, miR-192-5p positively correlated with vitamin D3 and ALP. CONCLUSIONS: Although limited by the small number of patients included in this study, we propose here a specific combination of circulating miR-122-5p/miR-192-5p/miR-323-3 and biochemical parameters as a potential molecular signature whose clinical value for LGMD patient prognosis and stratification should be further confirmed in a larger cohort of patients.

Acute arterial thrombosis in SARS-CoV-2 infection

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection, whose main expression is an acute respiratory syndrome, is also associated with concurrent multisystemic involvement, coagulation disorders and thrombotic complications, both in patients with prior diseases and those without. We present the case of a patient admitted to our hospital with no prior medical problems who had documented SARS-CoV-2 infection. During hospitalization, the patient developed acute left lower limb pain and absent pedal and posterior tibial pulses, with acute arterial ischemia due to thrombosis confirmed with imaging tests. Other causes of thrombosis such as atheromatosis, embolism and coagulation disorders, among others, were ruled out. He was anticoagulated with low-molecular-weight heparin and cilostazol throughout hospitalization and was discharged on warfarin and cilostazol. SARS-CoV-2-related acute arterial thrombosis should also be considered in our region. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2372).

La infección por síndrome respiratorio agudo severo-coronavirus-2 (SARS-CoV-2), cuya expre sión principal es el síndrome respiratorio agudo también se asocia a compromiso multisistémico y se han detectado coagulopatías y complicaciones trombóticas asociadas durante la infección, tanto en pacientes con patologías previas como sin ellas. Presentamos el caso de un paciente que ingresó a nuestro hospital sin antecedentes patológicos, con infección documentada por SARS-CoV-2. Durante la hospitalización presentó dolor agudo de miembro inferior izquierdo con ausencia de pulsos pedio y tibial posterior, confirmándose por estudios imagenológicos isquemia arterial aguda por trombosis. Se descartaron otras causas de trombosis como ateromatosis, embolia, coagulopatía, entre otros. Recibió anticoagulación con heparinas de bajo peso molecular y cilostazol durante el periodo de hospitalización y egresó con warfarina y cilostazol. La trombosis arterial aguda relacionada con infección por SARS-CoV-2 debe considerarse también en nuestra región. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2372).

Competitividad de los gobiernos subnacionales y su relación con la mortalidad por COVID-19 en Perú / Competitiveness of subnational governments and their relationship with COVID-19 mortality in Peru

Introducción: La pandemia por COVID-19 ha puesto de manifiesto las grandes desigualdades en la población mundial. Objetivo: Describir la correlación entre la competitividad y la mortalidad por COVID-19 en el Perú, teniendo como elemento de estudio a los gobiernos subnacionales. Material y Métodos: Estudio observacional basado en el análisis secundario de las muertes por COVID-19 en el 2020 y el índice de competitividad regional de los gobiernos subnacionales 2019. Se calcularon: tasas bruta y estandarizada, índice de efecto y de desigualdad de la pendiente, diferencia y razón de tasas brutas y estandarizadas, riesgo atribuible poblacional, gradiente social, así como brechas relativas y absolutas de mortalidad por COVID-19. Resultados: En el año 2020, la tasa estandarizada de mortalidad por COVID-19 (TEM-COVID-19) fue 267,61 muertes x 105 habitantes. El 21,53 por ciento de la varianza de la TEM-COVID-19 es explicada por el índice de competitividad regional del año 2019 (p= 0,019); el índice de desigualdad de la pendiente fue 29,68 y, por cada punto en el INCORE 2019, la TEM-COVID-19 aumentó 100,78 puntos (R2a= 0,181). En el quintil 1 de competitividad regional, esta fue 151,83, mientras que en el quintil 5 llegó a 449,15. La brecha de desigualdad absoluta entre ambos quintiles fue 297,32 y alcanzó 2,95 en la brecha de desigualdad relativa. La curva de concentración evidenció la desigualdad socio geográfica de las muertes por COVID-19 en el año 2020. Conclusiones: La mortalidad por COVID-19 se incrementó a medida que aumentaba la competitividad de los gobiernos subnacionales evidenciando la desigualdad socio-geográfica del impacto de la pandemia(AU)

Introduction: The COVID-19 pandemic has revealed high disparities in the world population. Objective: To describe the correlation between competitiveness and mortality from COVID-19 in Peru, with subnational governments as an element of study. Material and Methods: Observational study based on the secondary analysis of deaths from COVID-19 that occurred in 2020 and the regional competitiveness index of subnational governments in 2019. The crude and standardized rates, the effect index, the difference and ratio of crude and standardized rates, the population attributable risk, the inequality gradient, and the relative and absolute gaps in mortality from COVID-19 were calculated. Results: In 2020, the standardized mortality rate for COVID-19 (COVID-19-SMR) was 267,61 deaths per 105 inhabitants. Additionally, 21,53 percent of the variance from the COVID-19-SMR is explained by the regional competitiveness index 2019 (p= 0,019); the slope inequality index was 29,68 and, for each point in the INCORE 2019, the COVID-19-SMR increased 100,78 points (R2a= 0,181). In quintile 1 of regional competitiveness, it was 151,83, while in quintile 5 it reached 449,15. The absolute inequality gap between both quintiles was 297,32 and it reached 2,95 in the relative inequality gap. The concentration curve evidenced the socio-geographic inequality of deaths from COVID-19 in 2020. Conclusions: Mortality increased as subnational governments became more competitive, evidencing the socio-geographical inequality of the impact of the COVID-19 pandemic(AU)

Ocio familiar en tiempos de confinamiento: construcción y validación de un instrumento / Family leisure during lockdowns: Construction and validation of an instrument / Lazer em família em tempos de confinamento: Construção e validação de um instrumento

Resumen (analítico) La revalorización experimentada por el ocio en los contextos familiares, debido a las restricciones sociales que han conllevado un incremento del tiempo en casa, ha contribuido a que esta emerja con fuerza como línea de investigación educativa, pues hasta ahora se encontraba desatendida en el panorama español. En el presente estudio se diseña y valida el Cuestionario sobre ocio familiar durante el confinamiento. Para dotar de validez de contenido y consistencia al constructo, se contó con el juicio de 10 expertos sobre la claridad, pertinencia y adecuación del instrumento, mediante una escala de validación. Los resultados denotan que el cuestionario resultante (61 ítems) posee propiedades psicométricas adecuadas que lo convierten en una herramienta apropiada para evaluar el ocio familiar, quedando confirmado su rigor y valía como correcto instrumento de análisis.

Abstract (analytical) The revaluation of leisure in family contexts, caused by lockdowns imposed during the COVID-19 pandemic that led to an increase in time spent at home, has contributed to this area emerging as a focus of educational research, which until now had been neglected in Spanish-speaking countries. In the present study, the authors present the process of designing and validating a "Questionnaire on family leisure during lockdowns". In order to provide content validity and consistency to the design of the instrument, feedback from 10 experts assessed the clarity, relevance and suitability of the instrument using a validation scale. The results show that the questionnaire, with 61 questions, has sufficient psychometric properties that make it an appropriate tool to evaluate family leisure. During this process the authors confirmed its rigor and value as an analytical instrument for research.

Resumo (analítico) A revalorização vivenciada pelo lazer em contextos familiares, devido às restrições sociais que têm levado ao aumento do tempo em casa, tem contribuído para o seu surgimento fortemente como uma linha de pesquisa educacional, já que até então era negligenciada no cenário espanhol. No presente estudo, o "Questionário sobre lazer familiar durante o confinamento" é elaborado e validado. Para conferir validade de conteúdo e consistência ao construto, o julgamento de 10 especialistas contou com a clareza, pertinência e adequação do instrumento, por meio de uma escala de validação. Os resultados mostram que o questionário resultante (61 itens) possui propriedades psicométricas adequadas que o tornam um instrumento adequado para avaliar o lazer familiar, confirmando seu rigor e valor como um correto instrumento de análise.

Cirurgiões-dentistas diante de situações de assédio e importunação sexual: revisão integrativa / Dentists facing situations of sexual harassment: integrative review

Assédio e importunação sexual são tipos de violência configurados como crime pelo Código Penal Brasileiro. Situações como estas são frequentemente vivenciadas pela população, sendo as mulheres as principais vítimas. Na Odontologia, tais comportamentos tem trazido bastante preocupação, e promovido experiências negativas seja aos Cirurgiões-dentistas, Auxiliares de Saúde Bucal ou Técnicos de Saúde Bucal. Assim, por meio de uma revisão integrativa da literatura, este estudo objetivou analisar se o Cirurgião-dentista se sente preparado em lidar com este problema, as atitudes tomadas pelos Cirurgiões-Dentistas quando diante de situações em que se sinta assediado ou importunado sexualmente durante sua atividade profissional, bem como os sentimentos gerados pela experiência vivida. Para seleção dos artigos utilizou-se as bases de dados PubMed, Biblioteca Virtual de Saúde (BVS) e periódicos CAPES, e a amostra desta revisão constituiu-se em sete artigos. Após análise destas publicações, os resultados dos estudos apontaram prejuízos aos profissionais que vão desde o trabalho à vida pessoal. Foram relatados sentimentos de ansiedade, medo, perda de ânimo para realização das atividades profissionais, além de pesadelos e recordações angustiantes do momento vivido. Constatou-se que os Cirurgiões-dentistas de ambos os sexos não se sentem preparados profissionalmente para lidar com situações de assédio e importunação sexual, e que estes consideram de extrema relevância a inclusão da temática nos currículos dos cursos de graduação em Odontologia

Sexual harassment is a type of violence configured as a crime under the Brazilian Penal Code. Situations like these are frequently experienced by the population, with women being the main victims. In Dentistry, such behaviors have brought a lot of concern, and promoted negative experiences either for Dentist, Oral Dental Assistant or Dental Hygienists. Then, through an integrative literature review, this study aimed to analyze whether the dentist feels prepared to deal with this problem, the attitudes taken by dentists when faced with situations in which they feel sexually harassed during their professional activity, as well as the feelings generated by the lived experience. For selection of articles, the databases PubMed, Virtual Health Library (VHL) and CAPES periodicals were used, and the sample of this review consisted of seven articles. After evaluating these studies, the results pointed to several harms for professionals that happen from work to personal life. Feelings of anxiety, fear, and discouragement to do their job were reported, as well as nightmares and distressing memories of the lived moment. It was also found that Dentists do not feel professionally prepared to deal with situations of sexual harassment, and that they consider the inclusion of the subject in undergraduate dentistry curricula extremely relevant

MicroRNA-185-5p: a marker of brain-sparing in foetuses with late-onset growth restriction.

To compare the expression of microRNA-185-5p (miR-185-5p) in normal foetuses and in foetuses with late-onset growth restriction (FGR) and to determine the factors influencing this expression. In a prospective study, 40 foetuses (22 of them with late-onset FGR and 18 with normal growth) were scanned with Doppler ultrasound after week 35 and followed until birth. Subsequently, blood samples from umbilical cords were collected after delivery to evaluate the expression of miR-185-5p using real-time qPCR. Finally, multivariable regression analysis was applied to determine the clinical and ultrasonographic factors influencing miR-185-5p expression in both normal and late-onset FGR foetuses. In comparison with normal foetuses, late-onset FGR foetuses expressed upregulation of miR-185-5p (2.26 ± 1.30 versus 1.27 ± 1.03 2^-ddCt, P = 0.011). Multivariable regression analysis confirmed that cerebroplacental ratio (P < 0.05) was the only determinant of this overexpression. FGR foetuses overexpress miR-185-5p in relation to brain-sparing. Future studies will be needed to investigate the role of miR-185 in the management of late-onset FGR.

Characterization of black crusts developed on historic stones with diverse mineralogy under different air quality environments.

Black crusts (BCs) are one of the most critical alteration forms found on stones belonging to architectural heritage. Since they could be considered as passive samplers of atmospheric pollution, it would be plausible to establish relations between the air contamination and the BCs. With this aim, we have characterized BCs collected on historic buildings from two Spanish cities (Granada and Vigo) with different polluted atmospheres, as well as formed on stone substrates of varied mineralogy and texture. Likewise, in order to assess the impact of the atmospheric pollutants on the growth of BCs, quartz fiber filters were used as surrogate substrates and placed nearby the studied buildings to collect and analyze the aerosol particulate matter (PM). To this end, an array of complementary analytical techniques was used to evaluate the mineralogy, chemical composition, and texture of the BCs and to establish the correlation with the ions, OC (organic carbon), and EC (elemental carbon) detected in the PM on the quartz fiber filters. As result, BCs developed on carbonate substrates from Granada show more complex structure than those from Vigo, which are thinner because of frequent rain episodes. In both cities, NaCl, Pb-Cl, and Ca-Cl-rich particles, Ca-phosphate particles and clusters of Ba-sulfate-rich particles were detected. However, metal-rich rounded particles were more abundant in Granada's BCs, including soot particles. BCs from Granada were richer in carbonaceous components (OC and EC) than the Vigo's BCs. Although in the filters PM did not show EC-mainly due to traffic-, in the BCs from both locations OC and EC were detected. Therefore, this different composition was related to the mineralogy of the stones and the higher pollution of Granada in contrast to the industrial and sea-exposed city of Vigo.

Implementation of endoscopic submucosal dissection in a country with a low incidence of gastric cancer: Results from a prospective national registry.

INTRODUCTION: Endoscopic submucosal dissection (ESD) has become the treatment of choice for early gastric malignancies. In recent years, the ESD technique has been implemented in Western countries with increasing use. OBJECTIVES: To describe the results of gastric ESD in a Western country with a low incidence of gastric cancer. PATIENTS AND METHODS: The prospective national registry was conducted over 4 years in 23 hospitals, including 30 endoscopists. Epithelial and subepithelial lesions (SEL) qualified to complete removal with ESD were assessed. The technique, instruments, and solution for submucosal injection varied at the endoscopist's discretion. ESD was defined as difficult when: en-bloc resection was not achieved, had to be converted to a hybrid resection, lasted more than 2 h or an intraprocedural perforation occurred. Additionally, independent risk factors for difficult ESD were analyzed. RESULTS: Two hundred and thirty gastric ESD in 225 patients were performed from January 2016 to December 2019 (196 epithelial and 34 SEL). Most lesions were located in the lower stomach (111; 48.3%). One hundred and twenty-eight (55.6%) ESD were considered difficult. The median procedure time was 105 min (interquartile range [IQR]: 60-150). The procedure time for SEL was shorter than for epithelial lesions (90 min [45-121] vs. 110 min [62-160]; p = 0.038). En-bloc, R0, and curative resection rates were 91.3%, 75.2%, and 70.9%, respectively. Difficult ESD had lower R0 resection rates than ESD that did not meet the difficulty criteria (64.8% and 87.6%; p = 0.000, respectively). Fibrosis and poor maneuverability were independent factors associated with difficult ESD (OR 3.6, 95%CI 1.1-11.74 and OR 5.07, 95%CI 1.6-16.08; respectively). CONCLUSIONS: Although the number of cases is limited, the results of this analysis show acceptable en-bloc and R0 rates in gastric ESD considering the wide variability in experience among the operators. Fibrosis and poor maneuverability were associated with more difficulty in completing ESD.

Stochastic microswimming model of ribosome motion on the polysome.

In this work we assume that the ribosome propels itself during the translocation step of the translation process of protein synthesis by running a cycle of stochastically generated conformational changes involving its two subunits. This cycle includes only two experimentally found ribosome shape changes. The main result is an analytic expression for ribosome's average swimming speed on a polysome, where the ribosome is in the presence of other ribosomes. Relevant geometric parameters of ribosome deformations are calculated first by solving a deterministic problem where the ribosome runs a cycle of prescribed conformational changes. The method of reflections and pairwise additivity are used to obtain the stresses and forces needed to apply the multiparticle reciprocal theorem. Ribosome's average velocity when it runs the corresponding stochastic cycle of deformations is calculated assuming independence among the conformational cycles of different ribosomes on the polysome. The results obtained show that swimming in tandem on the polysome allows the ribosome to reach any typical subcellular speed with deformations whose amplitude is of a smaller size than when it swims alone in the fluid. Also, the flow organized by its swimming stroke becomes more determinant for its motion than random diffusion, compared to the solitary ribosome.