Educação sexual: dificuldades dos pais de jovens com síndrome de down / Sex education: difficulties for parents of young people with down syndrome / Educación sexual: dificultades para los padres de jóvenes con síndrome de down

Com este estudo buscou-se conhecer as dificuldades e barreiras de pais na educação sexual de jovens com Síndrome de Down, a partir de uma pesquisa descritiva e de natureza qualitativa, utilizando-se o conceito das representações sociais como referencial teórico-metodológico. O estudo foi conduzido em uma Organização Não Governamental (ONG), localizada em Recife (PE), após aprovação do Comitê de Ética e Pesquisa, sob parecer consubstanciado 3.558.587. A amostra do estudo envolveu 11 pais de jovens com Síndrome de Down com idades entre 15 e 24 anos. A coleta de dados foi realizada por meio de entrevistas semiestruturadas. A abordagem escolhida para a interpretação desses dados foi a análise de conteúdo proposta por Bardin. Pode-se elencar como principais dificuldades enfrentadas pelos pais ao conversarem com seus filhos sobre sexualidade: a infantilização do jovem com Síndrome de Down, julgando-o incapaz de experienciar tais fenômenos e compreender a orientação que pudesse ser repassada; o medo em ultrapassar etapas e, de repente, "estimular" o filho a viver sua sexualidade de maneira "precoce"; e o fato de os pais também terem recebido pouca ou nenhuma orientação sexual por parte de suas famílias. Diante das narrativas dos pais, é possível perceber que ainda são muitos os mitos, tabus e preconceitos que permeiam a sexualidade dos jovens com Síndrome de Down, demonstrando que os responsáveis estão despreparados para dar as devidas orientações.(AU)

This study sought to know the difficulties and barriers of parents in the sexual education of young people with Down Syndrome, from a descriptive, qualitative study, using the concept of social representations as a theoretical-methodological framework. The study was conducted in a Non-Governmental Organization (NGO), located in Recife (PE) after approval by the Ethics and Research Committee, under substantiated opinion 3,558,587. The study sample involved 11 parents of young people with Down Syndrome aged between 15 and 24 years. The data collection was carried out by using semi-structured interviews. The approach chosen for interpretation of these data was the content analysis proposed by Bardin. The main difficulties faced by parents in talking with their children about sexuality can be listed as: the infantilization of young persons with Down Syndrome, deeming them incapable of experiencing such phenomena and understanding the guidance that could be given; the fear of overshooting the stages and, suddenly, "stimulating" the child to live their sexuality in an "early" way; and the facts of the parents also having received little or no sexual guidance from their families. Given the parents' narratives, it is possible to realize that there are still many myths, taboos, and prejudices that permeate the sexuality of young people with Down Syndrome, demonstrating that parents were unprepared to provide the right guidance.(AU)

Este estudio buscó conocer las dificultades y barreras de los padres en la educación sexual de los jóvenes con síndrome de Down a partir de un estudio descriptivo, cualitativo, que utilizó el concepto de representaciones sociales como marco teórico-metodológico. La investigación se llevó a cabo en una Organización No Gubernamental (ONG), ubicada en la ciudad de Recife (Pernambuco, Brasil), después de la aprobación del Comité de Ética e Investigación, bajo la opinión fundamentada 3.558.587. La muestra del estudio incluyó a 11 padres de jóvenes con síndrome de Down con edades comprendidas entre 15 y 24 años. La recolección de datos se realizó mediante entrevista semiestructurada. El enfoque elegido para la interpretación de los datos fue el análisis de contenido propuesto por Bardin. Pueden enumerarse como las principales dificultades que enfrentan los padres para hablar sobre la sexualidad con sus hijos: la infantilización del joven con síndrome de Down, considerándolo incapaz de experimentar tales fenómenos y comprender la orientación que se le puede dar; el miedo de ir más allá de las etapas y, de repente, "estimular" al niño a vivir su sexualidad de una manera "temprana"; y el hecho de que los padres también habían recibido poca o ninguna orientación sexual de sus familias. Dadas las narraciones de los padres, es posible darse cuenta de que todavía hay muchos mitos, tabúes y prejuicios sobre la sexualidad de los jóvenes con síndrome de Down, lo que muestra que los padres no estaban preparados para brindarles este tipo de orientación.(AU)

Uma teoria psicológica transfeminista: sobrevivendo aos escombros da saúde mental brasileira / A transfeminist psychological theory: surviving the debris of brazilian mental health / Una teoría psicológica transfeminista: sobrevivir a los escombros de la salud mental brasileña

Este artigo reflete sobre os modos como a cisnormatividade, conceito impulsionado pelos transfeminismos, tem auxiliado na composição da psicologia de maneira histórica. Ao elaborar uma crítica sobre como a violência de gênero está expressivamente presente no território brasileiro, discute-se como tem sido pensada a saúde mental, esfera que, uma vez inserida nesse contexto mais amplo, está sendo convocada a produzir saídas criativas em relação aos sujeitos que são alvo de discriminações transfóbicas. Na busca de deslocar o olhar do indivíduo para o social, foi realizado um estudo bibliográfico para investigar os diferentes impactos que a cisnormatividade opera em nossos currículos psicológicos, gerando efeitos na prática e na própria profissão. A aposta está em reconhecer outras epistemologias como projetos éticos e políticos a uma psicologia contemporânea, e a contribuição transfeminista a "outra" clínica. É nesse sentido que este trabalho se destina a pensar um modo de cuidado que esteja baseado na singularidade, mas que, ao mesmo tempo, seja capaz de dedicar alguma atenção ao paradigma normativo que nos guia como terapeutas.(AU)

This article reflects on the ways that cisnormativity, a concept boosted by transfeminisms, has played a historical role in the composition of psychology. Elaborating a criticism on how gender violence is expressively present in the Brazilian territory, we discuss how mental health is conceived, a sphere that, inserted in this wider context, is invited to create creative solutions related to the subjects who are the target of transphobic discrimination. Trying to shift the focus from the individual to the collective, a bibliographical study was conducted to recognize the different impacts that cisnormativity has in our psychological curriculums, having effects on the practice and on the profession itself. The goal is to recognize other epistemologies as ethical and political projects for contemporary psychology and the transfeminist contribution to "another" clinic. It is in this sense that this work aims to think about a form of care that is based on singularity, but that can also pay attention to the normative paradigm that guides us as therapists.(AU)

Este artículo reflexiona sobre las formas en que la cisnormatividad, un concepto impulsado por los transfeminismos, ha tenido un papel en la composición de la psicología de manera histórica. Al elaborar una crítica sobre como la violencia de género está expresamente presente en el territorio brasileño, se discute cómo se ha pensado la salud mental, dominio que, una vez insertado en este contexto más amplio, es convocado a producir soluciones creativas con relación a los sujetos que son objeto de discriminación transfóbica. Al desviar el enfoque del individuo hacia lo social, se realizó un estudio bibliográfico para investigar los diferentes impactos que tiene la cisnormatividad en nuestros planes de estudios psicológicos, generando efectos en la práctica y en la propia profesión. El foco está en reconocer otras epistemologías como proyectos éticos y políticos para la psicología contemporánea y la contribución transfeminista a una "otra" clínica. En este sentido, este trabajo pretende pensar en una forma de cuidado que se basa en la singularidad, al mismo tiempo que sea capaz de dedicar cierta atención al paradigma normativo que a nosotras nos guía como terapeutas.(AU)

Development and reform of the curriculum of engineering ethics education in biology and medicine under the background of "new engineering" / 生物工程学报

The "new engineering" concept requires that in addition to laying a solid professional foundation, engineering colleges and universities in China should also pay attention to improving the humanistic quality and developing a professional ethics education in training the engineering and technical talents. One important way is to carry out the engineering ethics education. By referring to the mature case-teaching ideas around the world and combining the practical experience accumulated in recent years, this paper focuses on the curriculum development and teaching reform of engineering ethics for students studying biological and medical engineering, from the perspectives of case selection and teaching method innovation. It also introduces some typical case studies, and summarizes the teaching effect analyzed from questionnaire.

Biology of Glyphepomis dubia Campos & Souza, 2016 (Hemiptera: Pentatomidae) and the parasitoids Telenomus podisi Ashmead, 1893 and Trissolcus basalis (Wollaston, 1858) (Hymenoptera: Platygastridae) on rice / Biologia de Glyphepomis dubia Campos & Souza, 2016 (Hemiptera: Pentatomidae) e dos parasitoides Telenomus podisi Ashmead, 1893 e Trissolcus basalis (Wollaston, 1858 (Hymenoptera: Platygastridae) em arroz

Abstract The life cycle of stink bug, Glyphepomis dubia and the development of two egg parasitoids (Telenomus podisi and Trissolcus basalis) were studied at the Federal University of Maranhão, at 26 ± 2oC, relative humidity (RH) of 60 ± 10% and 12h photophase. Individuals used in the study were collected from seven rice fields located around the municipality of Arari, Maranhão, Brazil, and maintained in greenhouse and laboratory for the life cycle studies. From egg to adult, G. dubia took 35.2 days to complete the life cycle. The oviposition period was 37 days, with egg masses of about 12 eggs each and viability of 93.1%. Longevity was 53 and 65 days for females and males, respectively. The egg parasitoids Te. podisi and Tr. basalis parasitized and developed in G. dubia eggs; however, the biological characteristics of Tr. basalis were affected. Emergence of the parasitoids was higher for Te. podisi (83.5%) compared to the records for Tr. basalis (50.4%). Therefore, G. dubia may potentially achieve a pest status and Te. podisi is a promising biological control agent for G. dubia management in Brazil due to its higher longevity and better reproductive parameters.

Resumo O ciclo de vida do percevejo, Glyphepomis dubia e a biologia de dois parasitoides de ovos (Telenomus podisi e Trissolcus basalis) foram estudados na Universidade Federal do Maranhão, a 26 ± 2oC, umidade relativa (UR) de 60 ± 10% e fotofase de 12h. Sete indivíduos de G. dubia foram coletados em lavoura de arroz localizada no município de Arari, Maranhão, Brasil e mantidos em casa de vegetação e laboratório para estudos de ciclo de vida. Do ovo ao adulto, G. dubia levou 35.2 dias para completar o ciclo de vida. O período de oviposição foi de 37 dias com massas de ovos com cerca de 12 ovos/massa e viabilidade de 93.1%. A longevidade foi de 53 e 65 dias, respectivamente, para fêmeas e machos. Os parasitoides de ovos, Te. podisi e Tr. basalis parasitaram e se desenvolveram em ovos de G. dubia, no entanto as características biológicas de Tr. basalis foi afetada. A emergência dos parasitoides foi maior para Te. podisi (83.5%) em comparação com o registrado para Tr. basalis (50.4%). Portanto, G. dubia poderá apresentar potencial para atingir o status de praga e Te. podisi é um promissor agente de controle biológico para ser utilizado no manejo de G. dubia no Brasil, pois apresentou maior longevidade e os melhores parâmetros reprodutivos.

Research progress of tunneling nanotube in bone biology / 中华口腔医学杂志

Tunneling nanotube (TNT) is a newly discovered communication mode between animal cells in recent years, which have important physiological and pathological significance. However, the role of TNT in bone biology is still unclear. At present, there are many reports about tunneling nanotubes in bone marrow mesenchymal stem cells, osteoclast precursor cells, osteoblasts and immune cells. This review describes the research advances of TNT and its research progress in bone biology. It looks forward to the research direction of TNT in oral and maxillofacial bone development and bone biology, to provide new strategies for the maintenance of bone homeostasis and the treatment of bone diseases.

Application of PET-LINAC in Biology-guided Radiotherapy / 中国医疗器械杂志

Biology-guided radiotherapy (BgRT) is a novel technique of external beam radiotherapy, combining positron emission tomography-computed tomography (PET-CT) with a linear accelerator (LINAC). The key innovation is to utilize PET signals from tracers in tumor tissues for real-time tracking and guiding beamlets. Compared with a traditional LINAC system, a BgRT system is more complex in hardware design, software algorithm, system integration and clinical workflow. RefleXion Medical has developed the world's first BgRT system. Nevertheless, its actively advertised function, PET-guided radiotherapy, is still in the research and development phase. In this review study, we presented a number of issues related to BgRT, including its technical advantages and potential challenges.

The institutionalisation of biology in the British Association for the Advancement of Science, 1866-1894 / A institucionalização da biologia na British Association for the Advancement of Science, 1866-1894

Abstract Biology, like most scientific disciplines, emerged in the nineteenth century. However, disciplinary institutionalisation processes are not linear; a concept can be proposed, but not develop. Biology originated in the presence of established traditions such as anatomy, physiology, botany, and zoology, which represent the thematic and practical diversity under which it was understood. Based on the records of the annual meetings of the British Association for the Advancement of Science, the process by which biology emerged will be described. We will also recount how the discipline underwent changes throughout the century, where contrasting methodologies and theories were emphasized at different times.

Resumo A biologia, assim como a maioria das disciplinas, surgiu no século XIX. No entanto, os processos de institucionalização das disciplinas não são lineares; um conceito pode ser proposto, mas não ser desenvolvido. A biologia originou-se em meio a tradições estabelecidas, como a anatomia, fisiologia, botânica e zoologia, que representam a diversidade temática e prática sob a qual era compreendida. O processo do qual a biologia emergiu será descrito com base nos registros dos encontros anuais da British Association for the Advancement of Science. Relatamos também como a disciplina passou por modificações ao longo do século, em que metodologias e teorias contrastantes ganharam evidência em diferentes momentos.

Feno-morfología de dos especies de páramo de Miconia (Melastomataceae): optimización de la floración y fructificación para mejorar la dispersión / Pheno-morphology of two paramo species of Miconia (Melastomataceae): optimization of flowering and fructification to enhance dispersal

Introducción: El Páramo es uno de los ecosistemas más afectados por actividades humanas, lo que aumenta la necesidad de estudios fenológicos como base para el manejo y la conservación. Objetivo: Describir la feno-morfología de Miconia ligustrina y Miconia elaeoides. Métodos: De septiembre 2019 a febrero 2020, y de abril 2021 hasta agosto del mismo año, se monitoreó la fenología de 12 individuos de cada especie. Adicionalmente, se vincularon datos fenológicos de ejemplares de herbario, para corroborar los resultados obtenidos. En los dos conjuntos de datos, se describió su distribución usando estadística circular, además, se obtuvieron registros de precipitación y temperatura del área. Adicionalmente, se describió la morfometría de cada especie. Resultados: El pico de floración de M. lingustrina es en abril, y la fructificación se concentra entre junio y julio; M. elaoides, florece de forma masiva en enero, con la máxima producción de frutos en mayo. Hubo correlación entre fenología y lluvias: la floración se da en época seca y la fructificación en la época lluviosa. Las especies difieren en morfología, pero, como en otras especies de Miconia, las flores y frutos son pequeños (aprox. 5 mm). Conclusión: La floración se presenta en la época seca y la fructificación en la época lluviosa, cuando las tasas de fotosíntesis son bajas y la frugivoría incrementa. Este patrón fenológico favorece la dispersión óptima de semillas.

Introduction: Paramos are among the ecosystems that are most affected by anthropic activities, increasing the need for phenological studies as a basis for management and conservation. Objective: To describe the pheno-morphology of Miconia ligustrina and Miconia elaeoides. Methods: From September 2019 to February 2020, and from April 2021 to August of the same year, the phenology of 12 individuals of each species was monitored. Additionally, phenological data of herbariums were linked to corroborate obtained results. In the two data sets, distribution of data was described using circular statistics; in addition, we recorded the precipitation and temperature in the area. Additionally, we described the morphometry of each species. Results: The flowering peak of M. ligustrina is in April, and fruiting concentrates between June and July; in M. elaeoides, flowering is massive in January, and the highest fruit production in May. The phenology was correlated with rainfall: flowering takes place in the dry season and fruiting in the rainy season. The species differ morphologically, but, as in other Miconia species, the flowers and fruits are small (approx. 5 mm). Conclusions: Flowering occurs in the dry season and fructification in the rainy season, when the photosynthetic rate is low and frugivory increases. This phenological pattern favors optimal seed dispersal.

Aspectos reproductivos de la raya látigo Hypanus longus (Garman, 1880) de los desembarques de la pesca artesanal en el Pacífico de Guatemala / Reproductive aspects of the longtail stingray Hypanus longus (Garman, 1880) from the landings of the artisanal fishery in the Pacific of Guatemala

La raya látigo Hypanus longus, ha pasado de ser una especie de captura incidental a una especie objetivo en la pesca artesanal del Pacífico de Guatemala. Esta actividad es realizada sin considerar criterios biológicos esenciales para su aprovechamiento sostenible. Aunado a ello, H. longus es una especie sensible, presentando características biológicas como: madurez sexual tardía, ciclos reproductivos largos y baja fecundidad. El presente estudio contribuye al conocimiento de la biología reproductiva de la raya látigo. Durante mayo de 2019 a marzo de 2020 se realizaron 11 muestreos de los desembarques de la pesca artesanal en la comunidad de Sipacate, Escuintla, en cada muestreo se registró el ancho de disco (AD), el peso, sexo y estado de maduración sexual de H. longus. En total se registraron 336 organismos, que presentaron una proporción sexual de 1:1, un AD para hembras de M = 82.33 cm, DS = 22.24 y de M = 76.91 cm, DS = 11.86 para machos. A partir de las evaluaciones externas e internas de los aparatos reproductores se determinó la talla de madurez sexual (L50), siendo de 88.2 y 79.3 cm AD para hembras y machos respectivamente. Finalmente, este estudio evidencio que el 65.68% de hembras y el 52.10% de machos son capturados por debajo de la L50, por lo cual se recomienda elaborar e implementar estra-tegias o medidas tendientes a la regulación de las prácticas pesqueras o artes de pesca que permitan la captura de organismos mayores a 95 cm de AD.

The whip ray Hypanus longushas gone from being a bycatch species to a target species in artisanal fisheries in the Pacific of Guatemala. This activity is carried out without considering essential biological criteria for its sustainable use. In addition, H. longusis a sensitive species, presenting biological characteristics such as late sexual maturity, long reproductive cycles and low fecundity. The present study contributes to the knowledge of the reproductive biology of the whip ray. During May 2019 to March 2020, 11 samplings were conducted from artisanal fishery landings in the community of Sipacate, Escuintla, in each sampling the disc width (AD), weight, sex and sexual maturation stage of H. longus were recorded. A total of 336 organisms were recorded, which pre-sented a sex ratio of 1:1, with a female AD of M = 82.33 cm, SD = 22.24 and M = 76.91 cm, SD = 11.86 for males. From the external and internal evaluations of the reproductive apparatus, the size at sexual maturity (L50) was determined to be 88.2 and 79.3 cm AD for females and males, respectively. Finally, this study showed that 65.68% of females and 52.10% of males are caught below L50, so it is recommended to develop and implement strategies or measures to regulate fishing practices or fishing gear that allow the capture of organisms larger than 95 cm AD.

Analysis of articles on dental pulp biology research in China published in international journals from 2011 to 2020 / 中华口腔医学杂志

Objective: To analyze the articles on research of dental pulp biology in China and to understand the situation of China in the entire field of dental pulp biology around the world in order to provide references for further in-depth research in dental pulp biology in China. Methods: Based on Web of Science core collection database, the articles published in the international journals in the field of dental pulp biology from 2011 to 2020 were retrieved and identified. Six indicators including research scale, academic influence, high-ranking and the high-influence journals, research areas, international partnership and project funding were statistically analyzed. Results: Totally 1 215 articles were published by Chinese researchers, which is the most in the research field of dental pulp biology. The total number of citations was 18 328, however the average number of citations of above mentioned articles was slightly lower than that of the world average. The number of articles published in Natural Index Journals and Journal of Dental Research is lower than that of the United States. The research areas of dental pulp biology in China were not only in dentistry, oral surgery and medicine, but also in cell biology, experimental medicine, materials science, engineering, molecular biology and applied microbiology. Articles of internationally cooperated researches were scarce. Most of the researches of dental pulp biology field conducted in China were supported by the National Natural Science Foundation of China. Conclusions: Although there were fruitful research outcomes in the field of dental pulp biology from 2011 to 2020, the academic influence of these researches still needed to be improved. It was recommended that great efforts should be made in developing interdisciplinary, inter-unit and international cooperation, focusing on hotspot and major projects, actively applying for and using of project fundings in order to produce more high-quality research outcomes.

Population structuration and chromosomal features homogeneity in Parodon nasus (Characiformes: Parodontidae): A comparison between Lower and Upper Paraná River representatives

The ichthyofauna of the La Plata hydrographic basin is divided into Upper and Lower Paraná River systems due to the geographic isolation of the Sete Quedas waterfalls, currently flooded by the lake of the Itaipu dam. In Parodontidae, pairs of species, or groups of cryptic species were described between these systems. Although genetic isolation and speciation have already been proposed in other species in the group, Parodon nasus has been maintained as a valid species and distributed throughout the La Plata river basin. In this perspective, specimens of P. nasus from four different sampling sites in the Upper and Lower Paraná River systems were compared regarding the karyotypes, molecular analyzes of population biology and species delimitation to investigate their genetic and population isolation in the La Plata river basin. Despite a geographic barrier and the immense geographic distance separating the specimens sampled from the Lower Paraná River system compared to those from the Upper Paraná River, the data obtained showed P. nasus as a unique taxon. Thus, unlike other species of Parodontidae that showed diversification when comparing the groups residing in the Lower versus Upper Paraná River, P. nasus showed a population structure and a karyotypic homogeneity.(AU)

A ictiofauna do sistema hidrográfico La Plata é dividida em alto e baixo rio Paraná devido ao isolamento geográfico dos Saltos das Sete Quedas há 22 milhões de anos, atualmente inundado pelo lago da represa da Usina de Itaipu. Em Parodontidae, espécies pares ou grupos de espécies crípticas foram descritos entre esses sistemas. Contudo, embora o isolamento genético e especiação já tenham sido propostos em outras espécies do grupo, Parodon nasus tem sido mantido como espécie válida e distribuída em toda a bacia do rio La Plata. Nessa perspectiva, exemplares de P. nasus de quatro diferentes pontos de amostragem nos sistemas do alto e baixo rio Paraná foram comparados quanto ao arranjo dos cariótipos, análises moleculares de biologia populacional e delimitação de espécies, afim de investigar seu isolamento genético e populacional na bacia do rio La Plata. Apesar da barreira geográfica e imensa distância geográfica separando os exemplares amostrados no sistema baixo rio Paraná em comparação àqueles do alto rio Paraná, os dados obtidos demonstraram P. nasus como único táxon válido. Dessa forma, diferentemente de outras espécies de Parodontidae que demonstraram diversificação quando comparados grupos pares residentes no baixo e alto rio Paraná, P. nasus demonstrou estruturação populacional e homogeneidade cariotípica.(AU)

Exploration of multi-faceted model in plant biology teaching / 生物工程学报

Plant biology is a basic course for students majoring in biological science. Under the guidance of developmental biology, we have constructed a comprehensive, systematic and dynamic new curriculum system for plant biology. There are still some problems existing in the current curriculum teaching mode, e.g. the students do not listen carefully to the lecture due to single classroom teaching mode, the mismatch between theoretical and experimental courses in terms of content and timing, the incomplete understanding on plants and the difficulty of integrating learning and practicing due to insufficient field practices. In view of these problems, a series of new teaching strategies for bioscience major of Harbin Institute of Technology were proposed and implemented. The combination of lectures and high quality massive open online courses (MOOC) were used for theoretical study, to which the flipped classroom was added. In addition, the theoretical study and the experiment work were combined. Moreover, the plant cognitive practices were carried out in the campus and the botanical garden in early spring, late spring and summer, respectively. Satisfactory results were achieved after two rounds of teaching practice, which fulfilled the education requirements and laid foundations for students to continue follow-up basic and professional courses.

Reform in the course on General Biology in application-oriented universities / 生物工程学报

General Biology is basic discipline in Environmental Science and Engineering, which lays a basis for the specialized courses in this major. As the course involves a wide range of knowledge, traditional "cramming education" cannot attract the interest of students. To meet the needs of talents against the backdrop of "double world-class project", our teaching team applied the "double-cycle teaching mode" of blended teaching in the first class along with ideological education, professional education, innovation and entrepreneurship education in the second class of this course. With this method, major headway has been made in this course. This study is expected to serve as a reference for reform in other relevant courses.

Old fusidane-type antibiotics for new challenges: Chemistry and biology / 中国天然药物

The spread of antibiotic-resistant bacteria and exhausted drug leads render some infections untreatable now and in the future. To deal with these "new challenges", scientists tend to re-pick up "old antibiotics". Fusidane-type antibiotics have been known for nearly 80 years as potent antibacterial agents against gram-positive bacteria, especially Staphylococci, and represent the only triterpene-derived antibiotic class in clinical setting. These attractive characteristics have drawn renewed attention on fusidane-type antibiotics in recent decades. Isolation, characterization, biological evaluation, as well as chemical modifications of fusidane-type antibiotics are increasingly being reported. Combinatorial biosynthesis of this type of antibiotics has been successfully utilized not only for elucidating the biosynthetic pathways, but also for expanding their structural diversity. Some isolated and synthetic compounds exhibit comparable or even more potent biological activity than fusidic acid. This review provides an overview of progress on the studies of structure and biology of fusidane-type antibiotics from 1943 to April 2021. The informative structure-activity relationship is also highlighted.

Exploration of the talent training mode of biology majors driven by high-quality employments in higher education--a case study of Huzhou University / 生物工程学报

In recent years, driven by the support of national policies and societal needs for employments, talents in biology majors have been growing rapidly. To foster high-calibre biology talents for the society in the context of the "double world-class initiative" in higher education, this study analyzed the opinion of biology undergraduates in Huzhou University on employment and their professional recognition of biology majors. The aim of this study was to propose a high-quality employments-driven talent training mode for undergraduates in biology majors, so as to serve as a reference for the reform in training modes of other relevant majors.

Retos actuales a la enseñanza de la virología para enfrentar enfermedades emergentes / Current challenges to the teaching of virology to face emerging diseases

En los últimos años los microorganismos han generado múltiples evoluciones, provocando enfermedades y problemas agudos de salud pública. Para poder controlar las virosis es necesario conocer su biología y epidemiología, establecer tratamiento y profilaxis adecuada para su control. Para ello, es indispensable comenzar con la formación de los profesionales de la salud, en particular, los estudiantes de medicina, es necesario potenciar el desarrollo de sus habilidades y competencias, no solo dominio del conocimiento científico, si no también pueda promoverlo, transferirlo y aplicarlo con impacto en la salud colectiva y que vaya a la par de los avances tecno-científicos. Es por ello, que surge la inquietud del fórum, discusión acerca del análisis de la enseñanza de la virología para enfrentar enfermedades emergentes en función de perfil del egresado. Se realizó encuesta a los estudiantes de los últimos diez años de la carrera de medicina de UNIANDES, sobre la biología, epidemiologia, respuesta inmunológica y diagnóstico, para mencionadas áreas de conocimiento se obtuvo, tanto en la evaluación objetiva estructurada y evaluación práctica, un nivel altamente satisfactorio. En la pirámide de Miller, se alcanzó nivel tres con conocimiento y desarrollo de habilidades, destrezas y actitudes del egresado satisfactorias. Sin embargo, los profesores de Virología están de acuerdo con innovar en la docencia integrando los contenidos transversalmente a las áreas de conocimiento: enfermedades infecciosas, clínicas, patologías, epidemiología y salud pública, lo que permitirá un aprendizaje integral para realizar abordaje adecuado de caso positivos de las virosis, además de tener capacidades para establecer vigilancia epidemiológica(AU)

In recent years, microorganisms have generated multiple evolutions, causing diseases and acute public health problems. In order to control virosis, it is necessary to know their biology and epidemiology, establish adequate treatment and prophylaxis for their control. For this, it is essential to start with the training of health professionals, in particular, medical students, it is necessary to promote the development of their skills and competencies, not only mastery of scientific knowledge, but also be able to promote it, transfer it and apply it with an impact on collective health and that goes hand in hand with techno-scientific advances. That is why the concern of the forum arises, a discussion about the analysis of the teaching of virology to face emerging diseases based on the profile of the graduate. A survey was conducted to the students of the last ten years of the UNIANDES medical career, on biology, epidemiology, immunological response and diagnosis, for mentioned areas of knowledge it was obtained, both in the objective structured evaluation and practical evaluation, a level highly satisfactory. In the Miller pyramid, level three was reached with satisfactory knowledge and development of abilities, skills and attitudes of the graduate. However, Virology professors agree with innovating in teaching by integrating the content transversally to the areas of knowledge: infectious diseases, clinics, pathologies, epidemiology and public health, which will allow comprehensive learning to carry out an adequate approach to positive cases of virosis, in addition to having the capacity to establish epidemiological surveillance(AU)

Estaciones de aprendizaje para abordar concepciones de fisiología y morfología sobre el concepto de célula / Learning stations to analyze physiology and morphology perceptions of the cell concept

RESUMEN: El objetivo del presente estudio fue determinar la influencia de la implementación y aplicación de la metodología de enseñanza estaciones de aprendizaje, sobre un aprendizaje activo de la fisiología y morfología de la célula. Se trabajó con 90 estudiantes de enseñanza secundaria, distribuidos en un grupo control y otro experimental, los cuales recibieron clases tradicionales y la aplicación de la metodología estaciones de aprendizaje, respectivamente. Los datos fueron recolectados en base a test de concepciones y conocimientos, más encuesta de valoración. El análisis de los datos reveló que las estaciones de aprendizaje son una metodología de enseñanza efectiva en el aprendizaje de la célula, ya que permiten mejorar significativamente las concepciones previas de los estudiantes, los cuales valoran de manera positiva y significativa la metodología de la que fueron partícipes.

SUMMARY: The aim of this study was to determine the influence of the implementation and application of the learning stations teaching methodology on active learning of the physiology and morphology of the cell. We worked with 90 high school students, distributed in a control group and an experimental group, who received traditional classes and the application of the learning stations methodology, respectively. The data were collected based on a conception and knowledge test, plus an evaluation survey. The analysis of the data revealed that the learning stations are an effective teaching methodology in learning of the cell, since they allow to improve prior perceptions of the students, who significantly and positively value the methodology in which they participated.