Prediction of soil seed bank of piedmont and alluvial environments of Dera Ghazi Khan, Punjab, Pakistan / Predição do banco de sementes do solo do piemonte e ambientes aluviais de Dera Ghazi Khan, Punjab, Paquistão

Abstract The current focus is on the overall pattern of seed storage present in the fragments of the soil of piedmont and alluvial landscapes of the environment. The present study predicted the seed banks of both soils of alluvial and piedmont zones in different ecological conditions and evaluate the potential of seeds in the restoration of both environments. The composition of the seed bank of soil is mainly affected by the alluvial environment and the structure of cleared area shows that more species of germinating annual grasses and growable seeds with the higher total number. Extant vegetation structures have an important role in the diversity of soil seed reservoirs, whose composition corresponded with the openness of the site. When in situ soil seed bank is recruited, it helps to restore only some components of the plant community in an alluvial environment. In our current research, it was confirmed that seed richness was higher in number at lower elevation (alluvial) than that at high elevation (piedmont). Seed richness showed a significant negative correlation with anions, cations, while significantly positive with altitude that suggests the richness pattern of the overall seed bank of the area is influenced by various environmental factors.

Resumo O foco atual está no padrão geral de armazenamento de sementes presente nos fragmentos de solo do Piemonte e nas paisagens aluviais do meio ambiente. O presente estudo previu os bancos de sementes de ambos os solos das zonas aluvial e piemontesa em diferentes condições ecológicas e avaliou o potencial das sementes na restauração de ambos os ambientes. A composição do banco de sementes do solo é afetada principalmente pelo ambiente aluvial e a estrutura da área desmatada mostra que mais espécies de gramíneas anuais em germinação e sementes cultiváveis ​​apresentam o maior número total. As estruturas da vegetação existente têm um papel importante na diversidade dos reservatórios de sementes do solo, cuja composição correspondeu à abertura do local. Quando o banco de sementes do solo in situ é recrutado, o mesmo ajuda a restaurar apenas alguns componentes da comunidade de plantas em um ambiente aluvial. Em nossa pesquisa atual, foi confirmado que a riqueza de sementes era maior em número em altitudes mais baixas (aluviais) do que em altitudes elevadas (Piemonte). A riqueza de sementes mostrou uma correlação negativa significativa com ânions, cátions, enquanto significativamente positiva com a altitude, o que sugere que o padrão de riqueza do banco geral de sementes da área é influenciado por vários fatores ambientais.

Reabilitação com prótese bucomaxilofacial: revisão de literatura / Rehabilitation with maxillofacial prosthetics

A odontologia reabilitadora tem como um dos seus ramos a especialidade de Prótese Bucomaxilofacial (PBMF), que visa restaurar ou substituir estruturas perdidas na região facial e no sistema estomatognático artificialmente, podendo ser ou não removidos pelo paciente. O presente trabalho objetiva revisar a leitura a respeito da reabilitação com PBMF e a sua aplicabilidade na clínica odontológica. Os indivíduos com alguma perda de estrutura na região de cabeça e pescoço, devido a traumas físicos e/ou químicos, defeitos congênitos, doenças autoimunes, neoplasias, infecções e parasitas, são pacientes para os quais há a indicação da reposição da parte ausente. As reconstruções podem ser perdas intraorais (área da maxila, mandíbula), extraorais (oculopalpebral, ocular, nasal, facial extensa e auricular) ou conjugadas. Esse é um trabalho multidisciplinar, com especialistas de áreas abrangentes e todos os especialistas trabalham de forma conjunta. Pode-se concluir que, embora seja uma das especialidades mais nobres da odontologia, ainda é muito desconhecida por parte dos estudantes e profissionais das áreas da saúde e são próteses absolutamente fundamentais para a reabilitação e qualidade de vida dos indivíduos que tem a necessidade do uso da prótese PBMF(AU)

Rehabilitating dentistry has as one of its branches the specialty of Oral and Maxillofacial Prosthesis (PBMF), which aims to restore or replace structures lost in the facial region and in the stomatognathic system artificially, which may or may not be removed by the patient. The present study aims to review the reading about rehabilitation with PBMF and its applicability in dental clinic. Individuals with some loss of structure in the head and neck region, due to physical and/or chemical trauma, birth defects, autoimmune diseases, neoplasms, infections and parasites, are patients in whom there is an indication for replacement of the absent part. Reconstructions can be intraoral (maximal area, mandible), extraoral (oculopalpebral, ocular, nasal, extensive facial and auricular) or conjugated losses. It is a multidisciplinary work, with specialists from the comprehensive areas and that all specialists work together. It can be concluded that although it is one of the noblest specialties of dentistry, it is still very unknown to students and health professionals, and they are absolutely fundamental prostheses for the rehabilitation and quality of life of individuals who need the use the PBMFprosthesis(AU)

Preliminary validity for the Big Five Inventory-2 in brazilian adults / Evidências preliminares de validade do Big Five Inventory-2 em adultos brasileiros / Evidencias preliminares de validez del Big Five Inventory-2 en adultos brasileños

The Big Five Inventory-2 (BFI-2) assesses personality through the big five factor model model (FFM). This study aimed to verify whether the internal structure of the BFI-2 is corroborated in a Brazilian sample. Participants were 908 cisgender adults, aged between 17 and 93 years, 532 of whom were women. Confirmatory factor analysis and Exploratory structural equation modeling were performed with the BFI-2. The 15 facets of personality resulted in adequate fit and reliability, mainly for the respondents under 60 years of age. We conclude that the BFI-2 presents evidence of preliminary validity based on its internal structure, although further validity studies are required with the instrument, to testify its psychometric quality. (AU)

O Big Five Inventory-2 (BFI-2) avalia a personalidade no modelo dos Cinco Grandes Fatores (CGF). O presente estudo objetivou verificar se a estrutura interna do BFI-2 é corroborada em uma amostra brasileira. Participaram 908 adultos cisgênero, com idades entre 17 e 93 anos, sendo 532 mulheres. Análise fatorial confirmatória e modelagem de equações estruturais exploratórias foram conduzidas no BFI-2. As 15 facetas de personalidade do BFI-2 resultaram em índices de ajuste adequados, principalmente para os respondentes com idade até 60 anos. Conclui-se que o BFI-2 apresenta evidência inicial de validade baseada em sua estrutura interna, apesar de que novos estudos de validade devem ser conduzidos com o instrumento, com o objetivo de atestar sua qualidade psicométrica. (AU)

El Big Five Inventory-2 (BFI-2) evalúa la personalidad según el modelo de los Cinco Grandes Factores (CGF). El presente estudio tuvo como objetivo verificar si la estructura interna del BFI-2 se corrobora en una muestra brasileña. Participaron 908 adultos cisgénero, de entre 17 y 93 años, de los cuales 532 eran mujeres. Se realizó un Análisis Factorial Confirmatorio y un Modelo de Ecuaciones Estructurales Exploratorio sobre el BFI-2. Las 15 facetas de personalidad del BFI-2 dieron lugar a índices de ajuste adecuados, especialmente para los encuestados de hasta 60 años. Se concluye que el BFI-2 presenta evidencias iniciales de validez basadas en su estructura interna, aunque se deben ejecutar más estudios de validez con el instrumento para atestiguar su calidad psicométrica. (AU)

Study of karyotype and constitutive heterochromatin of Mansonia spp. (Diptera: Culicidae) in the area surrounding the Jirau Hydroelectric Dam, Rondônia, Brazil

ABSTRACT Background: Mansonia mosquitoes transmit arboviruses to humans. This study describes the karyotypes and C-banding of Mansonia humeralis, Mansonia titillans, Mansonia pseudotitillans, and Mansonia indubitans. Methods: From the 202 larvae, the brain ganglia were dissected (n=120) for the preparation of slides. Twenty slides with well-distended chromosomes for each species (10 for karyotyping and 10 for C-banding) were selected for further study. Results: The haploid genome and the average lengths of the chromosomal arms differed in relation to the centromere between species, and intraspecific differences also occurred in the distribution of the C-bands. Conclusions: These results are useful for better understanding of the chromosomal variability of Mansonia mosquitoes.

Design, synthesis and biological activity of DB02 amino acid derivatives as HIV-1 non-nucleoside reverse transcriptase inhibitors / 药学学报

To improve the stability of amino acid ester derivatives of DB02, a series of 24 amide derivatives of DB02 amino acids as non-nucleoside HIV-1 reverse transcriptase inhibitor were designed and synthesized based on bioisosterism by replacing amino acid ester scaffold with more stable amide bond. The anti-HIV-1 activity of these compounds was evaluated by MTT assay and counting the number of syncytia. Most of the target compounds showed a potential anti-HIV-1 activity, among which compounds 2d, 2i, 2l, 2s, and 2w had better antiviral effect than lead compound DB02, with a therapeutic index > 1 000.00. Finally, the structure-activity relationship of these compounds was discussed, which provided new ideas for the further development of DB02 derivatives.

Bioinformatics analysis of sterol O⁃acyltransferase 1 gene related to hepatocellular carcinoma / 中国生物制品学杂志

@#Abstract：Objective To predict the structure and function of sterol O⁃acyltransferase 1（SOAT1）related to hepatocellular carcinoma（HCC）by using bioinformatics tools，in order to understand its mechanism as the marker and therapeutic target of S⁃Ⅲ subtype. Methods The structure，function and protein interaction of SOAT1 were predicted and analyzed by using databases or softwares such as NCBI，STRING，Protscale，SignalP，TMHMM，PSORT，SOPMA，SWISS ⁃ MODEL， NetNGlyc，NetOGlyc，Netphos and ProtParam. Results The protein encoded by SOAT1 was a hydrophobic protein with good stability，which was a nonclassical pathway protein with 8 transmembrane regions，mainly distributed among the cell membrane. SOAT1 was expressed in many tissues，while most of them in the adrenal gland，which showed multiple phosphorylation sites and was mainly involved in the synthesis and catabolism of cholesterol. Conclusion Bioinformatics analysis of structure and function of SOAT1 showed that SOAT1 lipid synthesis and catabolism pathways played an important role，and lipid expression was closely related to the development of cancer，indicating that the treatment of HCC may be achieved by regulating the expression of SOAT1 gene.

Analysis of chemical components of Shenqi tiaoshen formula / 中国药房

OBJECTIVE To analyze chemical components of Shenqi tiaoshen formula （SQTS）. METHODS UPLC-QE-MS method was adopted. The determination was performed on ACQUITY UPLC BEH C18 column with mobile phase consisted of 0.1% formic acid solution-0.1% formic acid acetonitrile solution （gradient elution） at the flow rate of 0.4 mL/min. The column temperature was set at 40 ℃ ， and the sample size was 5 μL. The electrospray ionization source was used to scan positive and negative ions， and the scanning range was m/z 100-1 500. Combined with TCMSP， PubChem and other databases， SQTS active component database was established and the components were identified in combination with relevant literature. RESULTS & CONCLUSIONS Totally 131 chemical components were identified from SQTS， including 23 terpenoids， 22 flavonoids， 21 phenylpropanoids， 12 alkaloids， 11 phenols， 9 amino acid derivatives， 4 fatty acyls， 3 organic acids and others， such as rutin， citrinin， synephrine， cinnamic acid and ginsenoside Rg1，etc. The cracking process of the main components involved the breaking of glycosidic bonds， dehydration， etc.

Relationship between congenital absence of third molars and craniomaxillofacial structure / 口腔医学

Objective@# To analyze the correlation between third molar agenesis and craniofacial morphology by studying the location and number of congenital missing third molars and results of craniofacial cephalometric measurement. @*Methods@# A total of 123 patients were included, including 64 patients in the control group without congenital third molar absence and 59 patients in the absence group with at least one third molar absent. Cephalometric measurements included FMA, IMPA, AR-Go, GoGn-Sn, Co-A, Co-Gn, ANS-Me, Go-Me, SN-MP, Ar-Go-Me, SNA, SNB, ANB, Y-axis angle, Y-axis length, Ar-Go, Go-Me, MP-OP, FH-PP, FH-OP, a total of 18 bone tissue indicators, U1-SN, U1-L1, U1-NA, L1-NB, U1-APo and L1-APo, a total of 6 dental indicators, and UL-EP, LL-EP and nasolabial angle, a total of 3 soft tissue indicators. The correlation between congenital agenesis of third molars and craniofacial morphology was analyzed. @*Results@# The most common missing location of the third molar occured in the upper jaw and the most common number of missing teeth was one. In control group, Ar-Go-Me and SN-MP were larger (P<0.05), U1-SN, U1-NA, L1-NB, UL-EP and LL-EP were larger (P<0.05), and U1-L1 was smaller (P<0.01). There were no significant differences in Ar-Go and Go-Me between the two groups(P>0.05). @*Conclusion @#Patients with four third molars are more likely to have backward and downward rotation of the mandible and are more likely to develop into a convex facial type than patients with missing third molars, which has a higher correlation with hyperdivergent growth pattern and convex facial type.

Structure identification and content analysis of active components in Xiaoyao pills / 药学学报

Xiaoyao pills are a famous traditional Chinese medicine collected in Welfare Pharmacy, which is a classic prescription for treating liver depression and spleen deficiency. However, its composition is complex. In order to better control the quality of Xiaoyao pills, in this study, HPLC-ion-trap time-of-flight mass spectrometry (LC-IT-TOF/MS) was used to identify the main ingredients of Xiaoyao pills, paeoniflorin, albiflorin, glycyrrhizic acid, saikosaponin A and saikosaponin B2. Then a liquid chromatography tandem mass spectrometry (LC-MS/MS) was developed for simultaneous determination and quantification of the main compounds. Fragmentation pathways of five active components were obtained. The method was validated. Five active ingredients in Xiaoyao pills had a good linear relationship, and the values of RSD (%) of repeatability were all less than 5%, the recovery ranges were between 90% and 115%, and the values of RSD (%) of each substance were less than 10% after the sample solution is placed for 24 hours. Three batches of Xiaoyao pills (concentrated pellets) and two batches of Xiaoyao pills (water pellets) were determined, the contents of paeoniflorin in concentrated pills were more than 4.0 mg·g-1, and those in water pills were more than 2.5 mg·g-1, which was accordance with Chinese Pharmacopoeia. However, other compounds behave differently. This method has high sensitivity and reliable measurement results, which provides basis for quality control of Xiaoyao pills and material basis for pharmacology research.

Variability of PDYN and OPRK1 genes in four argentinian populations and its genetic association with clinical variables related to acute postsurgical pain / Variabilidad de los genes PDYN y OPRK1 en cuatro poblaciones argentinas y su asociación con variables clínicas relacionadas al dolor agudo post-quirúrgico

ABSTRACT Several population studies showed an association between variation in pain sensitivity and genetic polymorphisms located in Prodynorphin (PDYN) and Kappa Opioid Receptor (OPRK1) human genes. We analysed polymorphisms of these two genes to characterise their variation in Argentinian populations, as well as to evaluate their association with acute pain sensitivity. We studied 11 genetic markers in individuals from four locations in Argentina (Ciudad Autónoma de Buenos Aires, La Plata, Resistencia, and Misión Nueva Pompeya), calculated the population parameters, and evaluated the possible association among pain sensitivity, clinical, and genetic variables through a Generalised Estimating Equation model. High linkage disequilibrium was observed in the four populations for both genes, and significant differences were found among frequencies of Argentinian populations and those from other continents reported in the 1000 Genomes Project. Four PDYN gene polymorphisms from 3´ untranslated region and exon 4 showed association with acute pain sensitivity. One genotype of each of these polymorphisms was associated with a higher pain sensitivity, probably related with the activation of the N-methyl-D-aspartate (NMDA) receptors. We found a strong association with acute pain for the following clinical variables: 1) time after surgery, 2) intravenous klosidol supplied every 8 h, and 3) type of incision. Our results highlight the importance of a regional study of genetic variants which influence pain sensitivity and analgesic response.

RESUMEN La asociación entre la sensibilidad al dolor y los polimorfismos que presentan los genes humanos de prodinorfina (PDYN) y receptor opioide kappa (OPRK1) se ha evidenciado en distintos estudios poblacionales. Con el objetivo de caracterizar la variación de estos genes y evaluar su asociación con dolor agudo en la población argentina, analizamos 11 polimorfismos en individuos provenientes de cuatro localidades argentinas (Ciudad Autónoma de Buenos Aires, La Plata, Resistencia, y Misión Nueva Pompeya). Calculamos los parámetros poblacionales y evaluamos la posible asociación entre sensibilidad al dolor, variables clínicas y variables genéticas a través de un modelo de ecuación generalizada de estimación. Se observó alto desequilibrio de ligamiento para ambos genes en las cuatro poblaciones analizadas, y se encontraron diferencias significativas entre las frecuencias de poblaciones argentinas y las reportadas en el Proyecto 1000 Genomes para poblaciones de otros continentes. Cuatro polimorfismos de la región 3´UTR y el exón 4 de PDYN mostraron asociación con la sensibilidad al dolor agudo. En cada uno de estos polimorfismos, un genotipo resultó asociado con alta sensibilidad al dolor, probablemente en relación con la activación de receptores N-metil-D-aspartato (NMDA). Encontramos una fuerte asociación con dolor agudo para las siguientes variables clínicas: 1) tiempo post-cirugía, 2) administración intravenosa de klosidol cada 8 h, y 3) tipo de incisión. Nuestros resultados resaltan la importancia de realizar estudios regionales de variables genéticas que influyen en la sensibilidad al dolor y la respuesta analgésica.

Análisis factorial confirmatorio de la Escala verbal de fusión de identidad en una muestra chilena / Confirmatory factor analysis of the Verbal Identity Fusion Scale in a Chilean sample

Resumen La fusión de identidad consiste en un sentimiento de unión con un grupo, en el que el individuo experimenta una mezcla entre su identidad personal y la social; y es un buen predictor de la conducta extrema progrupo. El presente estudio analizó la estructura factorial de la Escala verbal de fusión de identidad elaborada por Gómez et al. (2011), en una muestra chilena. Se utilizó una muestra universitaria seleccionada por conveniencia de 411 participantes (66% mujeres) con una edad media de 24.45 años (DT = 5.89). Se analizó el ajuste unifactorial y bifactorial de la Escala a través del análisis factorial, y las respectivas confiabilidades. Los resultados indicaron un buen y mejor ajuste del modelo bifactorial (χ 2/gl = 3.34, p < .001, CFI = .975, TLI = .957, SRMR = .030, y RMSEA = .085), por sobre el unifactorial, que no mostró un buen ajuste (χ 2/gl = 5.26, p < .001, CFI = .946, TLI = .919, SRMR = .042, y RMSEA = .116). Ambos modelos contaron con altas confiabilidades (> .800). Se discutió sobre el mejor ajuste de la estructura bifactorial en relación con estudios realizados en Estados Unidos, España y población inmigrante en Chile. Se proyecta la necesidad de futuros estudios que incorporen otros análisis de validez y superen la limitación del presente estudio asociada al uso de una muestra no representativa.

Abstract Identity fusion consists in a form alignment with a group and is a significant predictor of extreme pro-group behavior. The present study analyzed the factor structure of the verbal scale of identity fusion developed by Gómez et al. (2011), in a Chilean sample. A Chilean university sample by convenience of 411 participants (66% women) with a mean age of 24.45 years (SD = 5.89) was used. One-factor and two-factor fit of the scale was analyzed through factor analysis, and the respective reliabilities. The results indicated a good and better fit of the two-factor (χ2/gl = 3.34, p < .001, CFI = .975, TLI = .957, SRMR = .030, and RMSEA = .085), than the one-factor model, which did not show a good fit (χ2/gl = 5.26, p < .001, CFI = .946, TLI = .919, SRMR = .042, and RMSEA = .116). Both models had high reliabilities (> .800). The better fit of the two-factor structure was discussed in relation to studies conducted in the United States, Spain, and an immigrant population in Chile. The need for future studies incorporating other validity analyses and overcoming the limitation of the present study associated with the use of a non-representative sample is projected.

Caracterización de las mujeres mediante variables obstétricas, según Robson / Characterization of women through obstetric variables, according to Robson / Caracterização da mulher por meio de variáveis obstétricas, segundo Robson

En los últimos tiempos, la praxis de la cesárea en los centros hospitalarios se ha incrementado notablemente, el cual es ha sido corroborado según fuentes del INEI, por su parte, la OMS estandarizó que la variabilidad máxima es el 15%, superado aquello genera un grave problema al estado en cuestiones económicos, para constatar la problemática se tuvo en cuenta el objetivo de caracterizar a las mujeres de parto por cesárea a través de variables obstétricas desde la perspectiva de Robson, por lo que la investigación correspondió al enfoque cuantitativo, tipo no experimental y diseño descriptivo, la muestra representada por 1365 mujeres registradas en el base de datos correspondientes al 2019. El análisis de los resultados obedeció al método inductivo-deductivo, la misma que permitió diferenciar la tasa global de cesárea, el modelo de Robson mostró como resultado el 53%, cifra que supera en 38% a lo que establece la OMS, mientras que los grupos con mayor contribución a la tasa global de cesáreas fueron los grupos: 5, 1, 3 y 10. Finalmente, se concluye que la mayor cantidad de las mujeres han sido sometida al parto por cesárea, siendo mayor la tasa global durante el año indicado, en consecuencia generó mayor gasto al estado, exigiendo incrementar presupuesto al sector salud, cabe precisar que existe la posibilidad de controlar a través de la inducción a las mujeres embarazadas para el parto vaginal aplicación de los métodos y técnicas eficaces que permitan generar confianza a la mayor población de mujeres gestantes.

In recent times, the practice of cesarean section in hospital centers has increased notably, which has been corroborated according to INEI sources, on the other hand, the WHO standardized that the maximum variability is 15%, exceeding this generates a serious problem for the state in economic matters, In order to verify the problem, the objective of characterizing women who give birth by cesarean section through obstetric variables from Robson's perspective was taken into account, so the research corresponded to the quantitative approach, non-experimental type and descriptive design, the sample represented by 1365 women registered in the database corresponding to 2019. The analysis of the results obeyed the inductive-deductive method, the same that allowed differentiating the global rate of cesarean section, Robson's model showed as a result 53%, a figure that exceeds by 38% what the WHO establishes, while the groups with the highest contribution to the global rate of cesarean section were the groups: 5, 1, 3 and 10. Finally, it is concluded that most women have been subjected to cesarean delivery, being higher the overall rate during the year indicated, consequently generated greater expenditure to the state, requiring increased budget to the health sector, it should be noted that there is the possibility of controlling through the induction of pregnant women for vaginal delivery application of effective methods and techniques to generate confidence to the largest population of pregnant women.

Nos últimos tempos, a prática da cesárea nos centros hospitalares tem aumentado notavelmente, o que tem sido corroborado de acordo com fontes do INEI, enquanto a OMS padronizou que a variabilidade máxima é de 15%, o que gera um grave problema para o Estado em questões econômicas, A fim de verificar o problema, foi levado em conta o objetivo de caracterizar as mulheres que dão à luz por cesárea através de variáveis obstétricas da perspectiva de Robson, de modo que a pesquisa correspondeu à abordagem quantitativa, tipo não experimental e desenho descritivo, a amostra representada por 1365 mulheres registradas no banco de dados correspondente a 2019. A análise dos resultados obedeceu ao método indutivo-dedutivo, que nos permitiu diferenciar a taxa geral de cesárea, o modelo de Robson mostrou um resultado de 53%, que é 38% maior do que o estabelecido pela OMS, enquanto os grupos com maior contribuição para a taxa geral de cesárea foram os grupos 5, 1, 3 e 10. Finalmente, conclui-se que a maioria das mulheres passou por cesarianas, sendo a taxa geral mais alta durante o ano em questão, e como resultado, o Estado gastou mais dinheiro, exigindo um aumento no orçamento do setor de saúde. Deve-se notar que é possível controlar as mulheres grávidas através da indução ao parto vaginal, aplicando métodos e técnicas eficazes que gerarão confiança na população maior de mulheres grávidas.

Binswanger and the carotid sinus (Historical Note) / Binswanger e o seio carotídeo (Nota Histórica)

The 'carotid sinus' is an arterial dilatation placed usually at the beginning of the internal carotid artery. The medial wall of this dilatation appears modified, with a reduction of the media, and an increase of the adventitia, besides containing nervous terminations, forming thus a sensorial structure. This dilatation was possibly first observed by John Bell (1808), and clearly described and named by Cruveilhier (1834). However, many authors credited the initial finding to Burns (1811), followed by a number of researchers, as Luschka (1862), Manson (1866), Meyer (1876), Schäfer (1878), most with a view related to aneurysm formation, but some seeing the formation as a normal trait. Finally, Binswanger (1879) reaffirmed that the dilatation meant a normal feature of the region, based on his own observations, and on the opinion of some forerunners. Besides, he was the first to classify this dilatation regarding the variability of its localization. The thinning of this region was initially identified by Meyer (1876) and detailed by Binswanger (1879), at bare eye visual inspection and on microscopic examination, observing there an important reduction of the width of the tunica media. Despite Meyer's effort, and mostly Binswanger's, the microscopic findings are incipient, what can be explained by the limitations of the histological techniques at the time. However, there is no doubt that Binswanger and his forerunners provided important information for the upcoming research, comprising the structure, innervation, and function of this formation.

O 'seio carotídeo' é uma dilatação arterial situada geralmente no início da artéria carótida interna. A parede medial dessa dilatação apresenta-se modificada, com redução da média e aumento da adventícia, além de conter terminações nervosas, constituindo assim uma estrutura sensorial. Essa dilatação foi possivelmente observada primeiro por John Bell (1808) e claramente descrita e denominada por Cruveilhier (1834). Entretanto, muitos autores creditam o achado inicial a Burns (1811), seguido por numerosos pesquisadores, como Luschka (1862), Manson (1866), Meyer (1876), Schäfer (1878), a maioria com olhar relacionada à formação de aneurisma, mas alguns vendo a formação como uma característica normal. Finalmente, Binswanger (1879) reafirmou que a dilatação representava um aspecto normal da região, baseado em observações próprias e na opinião de alguns de seus antecessores. Além disso, foi o primeiro a classificar essa dilatação quanto a variabilidade de sua localização. O adelgaçamento dessa região foi identificado inicialmente por Meyer (1876) e detalhado por Binswanger (1879), à inspeção visual a olho nu e ao exame microscópico, observando lá uma importante redução da espessura da túnica média. Apesar do esforço de Meyer e sobretudo de Binswanger, os achados microscópicos são incipientes, o que pode ser explicado pelas limitações das técnicas histológicas daquele tempo. Todavia, não há dúvida que Binswanger e seus precursores proveram importante informação para as pesquisas que se sucederam, compreendendo a estrutura, inervação e função dessa formação.

Efectos de la estructura textual sobre la comprensión y abstracción de hechos históricos / Effects of textual structure on comprehension and abstraction of historical facts

Resumen En este trabajo se indagó, desde una aproximación psicológica no representacional, y a partir de dos experimentos, por el efecto de la estructura textual en la comprensión y abstracción de textos. En el primer experimento, quince estudiantes universitarios leyeron tres textos históricos distintos con una de tres estructuras -secuencial, jerárquica o circunstancial-, y se midió si interpretaron, subinterpretaron o sobreinterpretaron los textos en tres pruebas propias de cada estructura, y si realizaban la abstracción de un hecho común a los tres textos. En el segundo, se replicó sistemáticamente el primer experimento, pero con otros quince estudiantes, que se asignaron según su conocimiento conceptual del dominio histórico-político. Los resultados sugieren mayor subinterpretación con la estructura secuencial, y mayor sobreinterpretación con la jerárquica y la circunstancial; el conocimiento conceptual explicó los hallazgos mejor que la estructura textual, pero no dio cuenta de toda la variabilidad. Al final se discuten los resultados en términos de la mediación lingüística como una competencia subordinante tanto del conocimiento conceptual como de la estructura textual. Asimismo, se resaltan las ventajas del registro evolutivo de la comprensión de cada lector, se anticipan algunas fuentes de control adicional para futuros estudios, y se culmina proponiendo algunas implicaciones educativas de los hallazgos.

Abstract In two experiments, the effect of textual structure on the comprehension and abstraction of texts from a non-representational psychological approach was investigated. In the first experiment, fifteen college students read three different historical texts with one of three structures: -sequential, hierarchical, and circumstantial- and t was measured whether they interpreted, under-intetpreted or over-interpreted the texts in three tests specific to each structure, and whether they abstracted a fact common to the three texts. In the second, the first experiment was systematically replicated but with another fifteen students, who were assigned according to their conceptual knowledge of the historical-political domain. The results suggest greater under-intetpretation with the sequential structure, and greater over-interpretation with the hierarchical and circumstantial. Conceptual knowledge explained the findings better than the textual structure but did not account for all variability. The results are discussed in terms of linguistic mediation as a subordinating competence of both conceptual knowledge and textual structure. It also highlights the advantages of the evolving record of each reader's comprehension, anticipates some sources of additional control for future studies, and concludes by proposing some educational implications of the findings.

Altitudinal distribution of the functional feeding groups of aquatic macroinvertebrates using an ecological network in Andean streams / Distribución altitudinal de los grupos funcionales de alimentación de macroinvertebrados acuáticos utilizando una red ecológica en arroyos andinos

Abstract Introduction: Analysis of functional feeding groups (FFG) in aquatic macroinvertebrates is important in understanding the structure, function, and dynamics of ecological processes in ecosystems. Modularity refers to the degree of compartmentalization of food webs and varies between -1 and 1. A network with a modularity value close to 1 is resilient to disturbances and can be interpreted as an indicating factor for the stability of communities. Objective: In this study, we analyzed the trophic structure of benthic macroinvertebrates in La Nitrera stream, the San Juan River, and the Cauca River in the Colombian Andes. Methods: The study was supported by ecological networking techniques using Gephi software. We studied nine sites in dry, rainy, and transition seasons in 2017 and 2018, monitoring changes in the altitude gradient. At each of the sites, the organisms were captured and determined, and physicochemical and hydraulic information was obtained. Results: The variance component analysis allowed to explain the variability of the data by relating the following environmental variables: FFG, diversity, richness, modularity, season, and time. Simple multifactorial ANOVA indicated that significant changes in FFG were associated with altitude, and modularity to time. The allocation of the FFG was done by stomach analysis and secondary information. Conclusion: The transition season had the highest modularity, possibly due to the recolonization of some biotopes caused by the decrease in the velocity of water currents. La Nitrera and San Juan presented higher values than the Cauca, which may indicate that the altitudinal change and velocity of water currents affects the compartmentalization of the network.

Resumen Introducción: El análisis de grupos funcionales de alimentación (GFA) en macroinvertebrados acuáticos es importante para comprender la estructura, función y dinámica de los ecosistemas de procesos ecológicos. La modularidad se refiere al grado de compartimentación de las redes alimentarias y varía entre -1 y 1. Una red con un valor de modularidad cercano a 1 es resistente a las alteraciones y puede interpretarse como un factor indicativo para la estabilidad de las comunidades. Objetivo: En este estudio se analizó la estructura trófica de los macroinvertebrados bentónicos, un elemento importante en la calidad ambiental, en el arroyo La Nitrera, el río San Juan y el río Cauca. Métodos: El estudio contó con el apoyo de técnicas de redes ecológicas utilizando el software Gephi. En 2017 y 2018, estudiamos nueve sitios en estaciones secas, lluviosas y de transición, monitoreando cambios en el gradiente de altitud. En cada uno de los sitios se capturaron y determinaron los organismos y se recogió información fisicoquímica e hidráulica. Resultados: El análisis de componentes de varianza permitió explicar la variabilidad de los datos relacionando las siguientes variables ambientales: GFA, diversidad, riqueza, modularidad, estación y tiempo. La ANOVA simple multifactorial indicó que existen cambios significativos en los GFA en relación con la altitud, y la modularidad con el tiempo. La asignación de los GFA se realizó mediante análisis estomacal e información secundaria. Conclusión: La temporada de transición tuvo la mayor modularidad, posiblemente debido a la recolonización de algunos biotopos provocada por la disminución de la velocidad del cauce. La Nitrera y San Juan presentaron valores superiores a los del Cauca, lo que puede indicar que el cambio altitudinal y la velocidad de las corrientes de agua influyen en la compartimentación de la red.

Evolução da estrutura e resultados da Atenção Primária à Saúde no Brasil entre 2008 e 2019 / Evolution of the structure and results of Primary Health Care in Brazil between 2008 and 2019

Resumo Descreve a evolução da estrutura e resultados da Atenção Primária à Saúde (APS) no Brasil, entre 2008 e 2019. Foram calculadas a mediana de variáveis como: despesa per capita em APS por habitante coberto, cobertura da APS e as taxas de mortalidade e internações por condições sensíveis à atenção primária (CSAP) de 5.565 municípios brasileiros estratificados segundo porte populacional e quintil do Índice Brasileiro de Privação (IBP) e analisada a tendência mediana no período. Houve aumento de 12% na mediana da despesa em APS. A cobertura da APS expandiu, sendo que 3.168 municípios apresentaram 100% de cobertura em 2019, contra 2.632 em 2008. A mediana das taxas de mortalidade e internações por CSAP aumentou 0,2% e diminuiu 44,9% respectivamente. A despesa em APS foi menor nos municípios com maior privação socioeconômica. Quanto maior o porte populacional e melhores as condições socioeconômicas dos municípios, menor a cobertura da APS. Quanto maior a privação socioeconômica dos municípios, maiores foram as medianas das taxas de mortalidade por CSAP. Este estudo demonstrou que a evolução da APS foi heterogênea e está associada tanto ao porte populacional como às condições socioeconômicas dos municípios.

Abstract This paper describes the structure and results of Primary Health Care (PHC) in Brazil between 2008 and 2019. The medians of the following variables were calculated: PHC spending per inhabitant covered, PHC coverage, and rates of mortality and hospitalizations due to primary care sensitive conditions (PCSC), in 5,565 Brazilian municipalities stratified according to population size and quintile of the Brazilian Deprivation Index (IBP), and the median trend in the period was analyzed. There was a 12% increase in median PHC spending. PHC coverage expanded, with 3,168 municipalities presenting 100% coverage in 2019, compared to 2,632 in 2008. The median rates of PCSC mortality and hospitalizations increased 0.2% and decreased 44.9%, respectively. PHC spending was lower in municipalities with greater socioeconomic deprivation. The bigger the population and the better the socioeconomic conditions were in the municipalities, the lower the PHC coverage. The greater the socioeconomic deprivation was in the municipalities, the higher the median PCSC mortality rates. This study showed that the evolution of PHC was heterogeneous and is associated both with the population size and with the socioeconomic conditions of the municipalities.

Assessment of otolith function using vestibular evoked myogenic potential in women during pregnancy / Avaliação da função otolítica através do potencial evocado miogênico vestibular em mulheres durante a gravidez

Abstract Introduction: More than 50% of pregnant women experience dizziness frequently in the first two gestational trimesters. During pregnancy, the changes in the metabolism of hormones are responsible for the ovarian cycle resulting in either peripheral or central vestibular alterations. The need for the study is to focus on the effect of changes during pregnancy on the vestibular evoked myogenic potential, an electrophysiological measure that investigates functions of the otolith structures. Objectives: The aim is to investigate the vestibular evoked myogenic potential responses during the first trimester of pregnancy. Methods: A total of 17 pregnant women and 17 non-pregnant women with age matched took part in this study. The cervical vestibular evoked myogenic potential were recorded from the ipsilateral sternocleridomastoid muscle and the ocular vestibular evoked myogenic potential were recorded from contralateral extraocular muscle in both groups. Results: Peak to peak amplitude of cervical vestibular evoked myogenic potential and ocular vestibular evoked myogenic potential was found to be significantly reduced in the responses obtained from first-trimester pregnant women when compared to that of non-pregnant women. Conclusions: Vestibular evoked myogenic potential tests exhibits a clinically significant reduced peak to peak amplitude in the first trimester of pregnancy, which indicates dysfunction in the otolith reflex pathway.

Resumo Introdução: Mais de 50% das mulheres grávidas apresentam tonturas frequentes nos primeiros dois trimestres da gravidez. Durante a gestação, as mudanças no metabolismo dos hormônios são responsáveis pelo ciclo ovariano, resultam em alterações vestibulares periféricas ou centrais. A necessidade do estudo é enfocar o efeito das mudanças durante a gravidez sobre o potencial evocado miogênico vestibular, uma medida eletrofisiológica que investiga as funções das estruturas otolíticas. Objetivo: Investigar as respostas do potencial evocado miogênico vestibular no primeiro trimestre da gravidez. Método: Participaram deste estudo 17 mulheres grávidas e 17 não grávidas com idades pareadas. O potencial evocado miogênico vestibular cervical foi registrado a partir do músculo esternocleidomastóideo ipsilateral e o potencial evocado miogênico vestibular ocular foi registrado a partir do músculo extraocular contralateral em ambos os grupos. Resultados: A amplitude pico a pico do potencial evocado miogênico vestibular cervical e do potencial evocado miogênico vestibular ocular estava significativamente reduzida nas respostas obtidas de mulheres grávidas no primeiro trimestre de gestação quando comparadas a de mulheres não grávidas. Conclusão: Os testes de potencial evocado miogênico vestibular mostram uma redução clinicamente significativa na amplitude pico a pico no primeiro trimestre da gravidez, o que indica disfunção na via otolítica reflexa.

Desafios enfrentados por enfermeiros na gestão de leitos hospitalares durante a pandemia por COVID-19 / Desafíos que enfrentan las enfermeras en la gestión de camas de hospitales durante la pandemia de COVID-19 / Challenges faced by nurses in hospital bed management during the COVID-19 pandemic

Objetivo: relatar desafios enfrentados por enfermeiros na gestão de leitos em uma unidade de internação hospitalar durante a pandemia pela COVID-19. Método: trata-se de estudo descritivo, do tipo relato de experiência. As experiências advêm de enfermeiros que atuam em um hospital público de grande porte, localizado no município de Belo Horizonte-MG. As experiências foram coletadas entre março de 2020 a março de 2022 e organizadas em polos temáticos, fundamentados nos pressupostos da análise de qualidade proposta por Donabedian. Resultados: os desafios enfrentados residem na manutenção do distanciamento entre os leitos, compartilhamento de banheiros, adaptações elétricas, criação de leitos de retaguarda, mudança no perfil dos leitos e na comunicação entre profissionais. Conclusão: os resultados convergem com os desafios previamente encontrados na literatura. Entretanto, apresentam de forma minuciosa e estruturada a realidade de uma unidade de internação, a qual tem potencial para auxiliar em situações de crise, sem previsibilidade e arcabouço científico.(AU)

Objective: to report challenges faced by nurses in managing beds in a hospital inpatient unit during the COVID-19 pandemic. Method: this is a descriptive study, of the experience report type. The experiences come from nurses who work in a large public hospital, located in the city of Belo Horizonte-MG. The experiences were collected between March 2020 and March 2022 and organized into thematic poles, based on the assumptions of the quality analysis proposed by Donabedian. Results: the challenges faced lie in maintaining the distance between beds, sharing bathrooms, electrical adaptations, creating backup beds, changing the profile of beds and communication between professionals. Conclusion: the results converge with the challenges previously found in the literature. However, they present in a detailed and structured way the reality of an inpatient unit, which has the potential to help in crisis situations, without predictability and scientific framework(AU)

Objetivo: relatar los desafíos enfrentados por los enfermeros en la gestión de camas en una unidad de hospitalización durante la pandemia de COVID-19. Método: se trata de un estudio descriptivo, del tipo relato de experiencia. Las experiencias provienen de enfermeros que actúan en un gran hospital público, ubicado en la ciudad de Belo Horizonte-MG. Las experiencias fueron recolectadas entre marzo de 2020 y marzo de 2022 y organizadas en polos temáticos, a partir de los supuestos del análisis de calidad propuesto por Donabedian. Resultados: los desafíos enfrentados radican en mantener la distancia entre camas, compartir baños, adaptaciones eléctricas, crear camas de respaldo, cambiar el perfil de las camas y la comunicación entre profesionales. Conclusión: los resultados convergen con los desafíos previamente encontrados en la literatura. Sin embargo, presentan de forma detallada y estructurada la realidad de una unidad de hospitalización, que tiene el potencial de ayudar en situaciones de crisis, sin previsibilidad y marco científico.(AU)

Beliefs Toward Cure of Homosexuality Scale: evidence for factor structure / Escala de Crenças sobre a Cura da Homossexualidade: evidências para a estrutura fatorial / Escala de Creencias sobre la Cura de la Homosexualidad: prueba de la estructura factorial

This study aimed to confirm the multifactorial structure of the Beliefs Toward Cure of Homosexuality Scale (BTCHS) - (ECCH in Portuguese) and to verify evidence of its validity based on external variables. To this end, two studies were carried out. In Study 1, there were 214 university students, with an average age of 24 years (SD = 9.15). These students answered the HCBS and demographic questions. The results indicated a satisfactory fit for multifactorial modeling. Study 2, in turn, presented 430 university students with an average age of 23 years (SD = 7.90). In addition to the HCBS, the participants responded to the measures of sexual prejudice (MSP) and attitudes towards gays and lesbians (ATGL) questionnaires. Performing correlation analyses between the variables, we found significant correlations between the HCBS and the MSP and ATGL. In conclusion, the HCBS presented an adequate data-model fit for its multifactorial structure and evidence for its validity based on external variables. (AU)

Este estudo objetivou confirmar a estrutura multifatorial da Escala de Crenças sobre a Cura da Homossexuliade (ECCH) e verificar evidências de validade baseada em variáveis externas. Para tal, foram realizados dois estudos. No Estudo 1 contou-se com 214 estudantes universtários, com uma média de idade de 24 anos (DP = 9,15). Estes responderam a ECCH e a perguntas demográficas. Os resultados indicaram um ajuste satisfatório do modelo multifatorial. O Estudo 2, por sua vez, contou com a participação de 430 estudantes universitários com uma média de idade de 23 anos (DP = 7,90). Além da ECCH, esses participantes responderam as medidas de preconceito sexual (EMPS) e atitudes frente a gays e lésbicas (EMAFGL). Mediante a realização de análises de correlação entre as variáveis foi possível constatar correlações significativas da ECCH com as dimensões da EMPS e EMAFGL. Conclui-se, que a ECCH apresenta bons indicadores de ajuste do modelo multifatorial e evidências de validade baseada em variáveis externas. (AU)

Este estudio objetivó confirmar la estructura multifactor de la Escala de Creencias sobre la Cura de la Homosexualidad (ECCH) y verificar evidencias de validez basadas en variables externas. Para ello, fueron realizados dos estudios. En el estudio 1 participaron 214 estudiantes universitarios, con una edad media de 24 años (DS = 9,15). Estos respondieron la ECCH y a las preguntas demográficas. Los resultados indicaron un ajuste satisfactorio del modelo multifactorial. El estudio 2, por su parte, contó con la participación de 430 estudiantes universitarios con una edad media de 23 años (DS = 7,90). Además de la ECCH, los participantes contestaron las medidas de prejuicio sexual (EMPS) y actitudes frente a gays y lesbianas (ATGL). Mediante la realización de análisis de correlación entre las variables fue posible constatar correlaciones significativas de la ECCH con las dimensiones de la EMPS y ATGL. Se concluye, que la ECCH presenta buenos índices de ajuste del modelo multifactorial y evidencias de validez basadas en variables externas. (AU)

Analysis of the structural adequacy of maternity hospitals in Piauí, Brazil, 2018-2019 / Análise da adequação estrutural das maternidades do Piauí, Brasil, 2018-2019

Abstract Objectives: to evaluate the structure and adequacy of maternal healthcare facilities in Piauí. Methods: cross-sectional study in 26 hospitals with more than 200 births/year between 2018-2019. The structure was assessed by direct observation and interview with manager, in four domains: physical aspects, human resources, equipment, and drugs. Fisher's chi-square/exact tests were used to assess differences in adequacy of structure. Results: only 46.2% of the maternal healthcare facilities had pre-delivery, parturition and immediate post-partum room. Pediatricians (73.1%) and anesthesiologists (61.5%) were the least present professionals on-duty regime. Regarding drugs, magnesium sulfate and oxytocin were observed in 76.9% of hospitals. Overall adequacy was 23.1%, being higher in maternal healthcare facilities in the capital (p=0.034) and in private ones (p=0.031). Conclusions: Data show inequalities in the structure of maternity hospitals of the state. The absence of health professionals, essential drugs, and appropriate physical structure can expose women and newborns to unnecessary and avoidable risks.

Resumo Objetivos: avaliar a estrutura e adequação das maternidades do Piauí. Métodos: estudo transversal em 26 hospitais com mais de 200 partos/ano entre 2018 e 2019. A estrutura foi avaliada por observação direta e entrevista com gestor, em quatro domínios: aspectos físicos, recursos humanos, equipamentos e medicamentos. Foram empregados os testes do quiquadrado/exato de Fisher para avaliar diferenças na adequação da estrutura. Resultados: apenas 46,2% das maternidades tinham quarto pré-parto, parto e puerpério. Pediatras (73,1%) e anestesistas (61,5%) foram os profissionais menos presentes em regime de plantão. Dos medicamentes, sulfato de magnésio e ocitocina foram observados em 76,9% dos hospitais. A adequação global foi de 23,1%, sendo maior em maternidades da capital (p=0,034) e privadas (p=0,031) Conclusões: os dados exibem desigualdades na estrutura das maternidades do estado. A ausência de profissionais de saúde, medicamentos essenciais e estrutura física apropriada pode expor mulheres e recém-nascidos a riscos desnecessários e evitáveis.