Cytotoxicity evaluation, antibacterial effect, and degree of conversion of QAM-containing adhesives

Abstract The aim of this study was to evaluate the influence of adding quaternary ammonium methacrylates (QAMs) to experimental adhesives by assessing the degree of conversion (DC), cytotoxicity against keratinocytes and fibroblasts, and antibacterial activity against biofilm formation. Two QAMs were added to an experimental adhesive: dimethylaminododecyl methacrylate bromododecane (DMADDM) or dimethylaminododecyl methacrylate bromohexadecane (DMAHDM) at three concentrations each: 1, 2.5, and 5 wt.%. Experimental adhesive without QAMs (control group) and commercially available Transbond XT Primer (3M Unitek, Monrovia, California, USA) were used for comparisons. The adhesives were tested for DC, cytotoxicity against keratinocytes and fibroblasts, and antibacterial activity against biofilm formation. DC, cytotoxicity against fibroblasts, and antibacterial activity were analyzed using one-way ANOVA and Tukey's multiple comparisons. Cytotoxicity against keratinocytes was evaluated using the Kruskal Wallis and Dunn's post-hoc (α = 5%) tests. Transbond showed lower DC as compared to 5% DMAHDM, 1% DMADDM, and 5% DMADDM (p < 0.05). However, all groups presented proper DC when compared to commercial adhesives in the literature. In the evaluation of cytotoxicity against keratinocytes, Transbond induced higher viability than 2.5 wt.% groups (p < 0.05). Against fibroblasts, Transbond induced higher viability as compared to 5 wt.% groups (p < 0.05). DMAHDM at 5 wt.% reduced biofilm formation when compared to all the other groups (p < 0.05). Despite their cytotoxic effect against keratinocytes, gingival fibroblasts showed higher viability. DMAHDM at 5 wt.% decreased Streptococcus mutans viability. The incorporation of DMAHDM at 5 wt.% may be a strategy for reducing the development of white spot lesions.

Synthesis and evaluation for anti-HCoV-OC43 activity of novel aloperine derivatives with different core structures / 药学学报

In this study, we designed and synthesized 12 novel aloperine derivatives with different core structures. Among them, compound 3 with a ten-membered ring core was obtained through a special ring expansion reaction after γ-H Huffman elimination of quaternary ammonium salt, and the structure was verified by X-single crystal diffraction. Furthermore, their antiviral activity against human β-coronavirus HCoV-OC43 was evaluated by CCK-8 assay. Quaternary ammonium salt 2a and 3 had a good inhibitory effect against HCoV-OC43, and 2a had the highest anti-HCoV-OC43 activity with an EC50 values of 3.77 μmol·L-1 and a SI value of over 53.1. Schrӧdinger molecular docking results showed that both 2a and 3 might display their anti-HCoV-OC43 activity by directly acting on host TMPRSS2 and SR-B1. The results expanded the structural types of endocyclic aloperine and the function against coronavirus, and provided useful scientific data for the development of pharmaceutical applications of these compounds.

Revisitando Whitaker: psicofármacos e cuidado em Saúde Mental na Atenção Primária à Saúde / Revisiting Whitaker: psychotropic drugs and Mental Health care in Primary Health Care

RESUMO Os Problemas de Saúde Mental (SM) e o uso indiscriminado de psicofármacos são problemas de grande relevância para a Atenção Primária à Saúde (APS) e a saúde pública. O objetivo deste ensaio é apresentar uma fundamentação atualizada da tese de Robert Whitaker, desenvolvida no livro 'Anatomia de uma epidemia: pílulas mágicas, drogas psiquiátricas e o aumento assombroso da doença mental'. É apresentada uma síntese do livro, acrescida de comentários sobre determinados temas, visando à melhor ancoragem científica dos argumentos. A tese defendida é que se deve evitar prescrever o uso de psicofármacos; e, caso seja iniciado o uso, que seja como sintomático agudo pelo menor tempo possível. Os argumentos giram em torno de que há evidências favoráveis apenas para redução de sintomas, para algumas dessas drogas e para curtos períodos de uso. Com seu uso crônico, há piora em longo prazo quanto à estabilidade, autonomia e funcionalidade social, com problemas graves de abstinência. Especialmente na APS (e também nos serviços especializados em SM), os profissionais deveriam ter uma abordagem mais crítica dos psicotrópicos e investir em outras abordagens terapêuticas, para fazerem algo melhor, menos iatrogênico e tão ou mais eficaz para os pacientes com problemas de SM no longo prazo.

ABSTRACT Mental Health (MH) issues and the indiscriminate use of psychotropic drugs are a great deal of a problem for the Primary Health Care (PHC) and public health. The aim of this article is to show an updated basis from Robert Whitaker theses in his book 'Anatomy of an epidemic: magic bullets, psychiatric drugs and the astonishing rise of mental illness'. It is presented a synthesis of the book, with specific comments about some topics, aiming for better scientific base of the arguments. The thesis endorses that prescribing psychotropic drugs must be avoided; and, if required, it must be as an acute symptomatic scenario for the least time as possible. The study has positive evidence that a few of these drugs only reduces symptoms, for a short period of time. If chronic used, in a long-term scenario, it seems to actually reduce stability, autonomy and social functionality, leaving the user with serious abstinence from the drug. Specially in PHC (and also in MH specialized services), professionals should have a mindful and discerning approach to psychotropic drugs, and invest in other therapeutic strategies, in order to do something better, less iatrogenic and as effective or more for the mental health patients in the long term.

Genealogia da Prevenção Quaternária: entre o uso da Medicina Baseada em Evidências e a reformulação do cuidado na Atenção Primária à Saúde / Genealogical analysis of Quaternary Prevention: between the use of Evidence-Based Medicine and care reformulation in Primary Health Care

Resumo Realizamos uma análise genealógica da Prevenção Quaternária, instrumento da Atenção Primária à Saúde de enfrentamento à medicalização e a iatrogenia, a partir de seus enunciados e de entrevistas com seus formuladores. Identificamos que a ferramenta tem sido tanto apresentada como uma reformulação do cuidado e da relação médico-paciente, como também reduzida ao cálculo do risco-benefício por meio da aplicação atualizada de evidências científicas. Analisamos os paradoxos da Medicina Baseada em Evidências e problematizamos sua relação com a Prevenção Quaternária e a Atenção Primária à Saúde. Por fim, sugerimos questionar a verdade das evidências para o desenvolvimento de outros paradigmas de saúde.

Abstract We conducted a genealogical analysis of quaternary prevention, an instrument of primary health care to address overmedicalization and iatrogenesis, based on related statements and interviews with the creators of this concept. This tool has been used in the reformulation of care and the doctor-patient relationship, but limited to the risk-benefit assessment by using current scientific evidence. In this study, we analyze the paradoxes of evidence-based medicine (EBM) and discuss the relationship of EBM and quaternary prevention and primary health care (PHC). Finally, we suggest questioning the truth of the evidence for the development of other health paradigms.

Construção e evidência de validade do Instrumento de Avaliação do Conhecimento sobre Prevenção Quaternária / Construction and evidence of validity of the knowledge assessment instrument on quaternary prevention / Construcción y pruebas de validez del instrumento de evaluación de los conocimientos sobre prevención cuaternaria

Objetivo: desenvolver e estimar a evidência de validade de um instrumento para avaliar a percepção dos acadêmicos de medicina sobre a prevenção quaternária. Método: Trata-se de um estudo metodológico desenvolvido em três etapas: 1) construção do instrumento para avaliação do conhecimento sobre Prevenção Quaternária a partir de referenciais teóricos; 2) evidência de validade baseada no conteúdo, realizada por 13 juízes; 3) evidência de validade baseada na estrutura interna, realizada por 180 acadêmicos de medicina. Análises fatoriais foram realizadas para verificar a estrutura hierárquica do modelo a partir das duas dimensões inicialmente construídas: Domínio Conhecimento e Domínio Prático. Resultados: O coeficiente de evidência de validade de conteúdo da escala total (CVCt) foi de 0,98, demonstrando uma alta concordância entre os avaliadores com a conceituação teórica subjacente. Quanto à precisão do instrumento, todos os itens apresentaram valores de Alfa de Cronbach acima de 0,7, indicando boa precisão. Verificou-se bons indicadores de precisão para a escala com dois fatores (Domínio Conhecimento e Domínio Prático) ƛ2= 109.746, gl= 103; p<0,001; ƛ2/gl= 0,30; CFI= 0,98 e RMSEA 0,019. Conclusão: o instrumento IP4-15 apresentou as evidências de validade de conteúdo, estrutura interna, precisão e propriedades dos itens adequadas para avaliar o conhecimento e a prática da prevenção quaternária de acadêmicos do curso de medicina. Serão necessários estudos futuros para investigar a aplicabilidade do IP4-15 para outras populações.(AU)

Objective: to develop and estimate the evidence of validity of an instrument to assess the perception of medical students about Quaternary Prevention. Method: this is a methodological study carried out in three steps: 1) construction of the instrument to assess knowledge about Quaternary Prevention based on theoretical references; 2) content-based evidence of validity, performed by 13 judges; 3) internal structure-based evidence of validity, performed by 180 medical students. Factor analyzes were performed to verify the hierarchical structure of the model based on the two dimensions initially constructed: Knowledge Domain and Practical Domain. Results: The total scale content validity evidence coefficient (CVCt) was 0.98, demonstrating a high inter-rater agreement with the underlying theoretical conceptualization. As for instrument precision, all items had Cronbach's Alpha values above 0.7, indicating good precision. Good precision indicators were found for the scale with two factors (Knowledge Domain and Practical Domain) ƛ2= 109,746, gl= 103; p<0.001; ƛ2/gl=0.30; CFI=0.98 and RMSEA 0.019. Conclusion: the IP4-15 instrument presented adequate evidence of content validity, internal structure, precision, and properties of the items to assess the knowledge and practice of Quaternary Prevention of medical students. Future studies will be needed to investigate the applicability of IP4-15 to other populations.(AU)

la percepción de los estudiantes de medicina sobre la Prevención Cuaternaria. Método:se trata de un estudio metodológico desarrollado en tres etapas: 1) construcción de un instrumento para evaluar el conocimiento sobre Prevención Cuaternaria basado en referencias teóricas; 2) prueba de validez basada en el contenido, realizada por 13 jueces; 3) prueba de validez basada en la estructura interna, realizada por 180 estudiantes de Medicina. Se realizaron análisis factoriales para verificar la estructura jerárquica del modelo a partir de las dos dimensiones construidas inicialmente: Dominio del conocimiento y dominio práctico. Resultados: el coeficiente de evidencia de validez de contenido de la escala total (CVCt) fue de 0,98, lo que demuestra...(AU)

Prevenção quaternária na saúde na percepção de profissionais de saúde / Quaternary prevention in health in the perception of health professionals / Prevención cuaternaria en salud en la percepción de los profesionales de la salud

Objetivo: compreender as percepções de profissionais de saúde atuantes em um hospital acerca da prevenção quaternária. Método: foi conduzido um estudo exploratório de cunho qualitativo, cuja fundamentação teórica baseou-se no interacionismo simbólico e na análise de conteúdo como referencial metodológico. A população foi composta por onze profissionais de saúde. Os dados foram obtidos por meio de entrevistas com roteiro semiestruturado. Resultados: A análise dos discursos determinou a construção das unidades temáticas agrupadas em três categorias temáticas para discussão: significado da prevenção quaternária para profissionais de saúde, experiências com a prevenção quaternária no contexto clínico-assistencial e interações sociais. À luz do interacionismo simbólico, identificaram-se experiências positivas e negativas com destaque às dificuldades dos profissionais e instituições para atuarem com a prevenção quaternária. Conclusão: Para concretização dessa proposta é necessário que uma reorientação da prática clínica dos profissionais seja almejada por meio de condutas técnicas e éticas desejáveis

Objective: to understand the perceptions of health professionals who work in a hospital about quaternary prevention. Method:an exploratory qualitative study was conducted, whose theoretical basis was based on symbolic interactionism and content analysis as a methodological reference. The population consisted of thirteen health professionals. The data were obtained through interviews with a semi-structured script. Results: The analysis of the discourses determined the construction of thematic units grouped into three thematic categories for discussion: meaning of quaternary prevention for health professionals, experiences with quaternary prevention in the clinical-care context and social interactions. In the light of symbolic interactionism, positive and negative experiences were identified, highlighting the difficulties of professionals and institutions to work with quaternary prevention. Conclusion: To implement this proposal, it is necessary that a reorientation of the clinical practice of professionals is desired through desirable technical and ethical conducts

Objetivo: comprender las percepciones de los profesionales de la salud que trabajan en un hospital sobre la prevención cuaternaria. Método: se realizó un estudio cualitativo exploratorio, cuya base teórica se basó en el interaccionismo simbólico y el análisis de contenido como referencia metodológica. La población estaba formada por trece profesionales de la salud. Los datos se obtuvieron a través de entrevistas con un guión semiestructurado. Resultados: El análisis de los discursos determinó la construcción de unidades temáticas agrupadas en tres categorías temáticas para la discusión: significado de la prevención cuaternaria para los profesionales de la salud, experiencias con la prevención cuaternaria en el contexto clínico-asistencial e interacciones sociales. A la luz del interaccionismo simbólico, se identificaron experiencias positivas y negativas, destacando las dificultades de los profesionales e instituciones para trabajar con la prevención cuaternaria. Conclusión: Para implementar esta propuesta, es necesario que se desee una reorientación de la práctica clínica de los profesionales a través de conductas técnicas y éticas deseables

Research progress on root canal irrigation disinfection drugs / 口腔疾病防治

@#Endodontic infection control is crucial to successful root canal treatment. Irrigation is the key step in endodontic procedures, and the application of root canal irrigation and disinfection medications play an important role. How to enhance antibacterial effects and functions in removing tissues while maintaining biocompatibility is a hot topic in endodontics. Currently, insights to address this issue can be split into two categories: one, the modification or combination of conventional endodontic irrigation solutions, and two, the development of novel endodontic irrigation solutions with new technologies and materials, for instance, nanomaterials and natural exacts. However, conventional endodontic irrigation solutions, such as sodium hypochlorite and chlorhexidine, are still the first choice in clinical practice. Most novel endodontic irrigation solutions remain at the pre-clinical laboratory stage. Clinical research and relevant data are required to determine whether various methods can improve endodontic irrigation. From basic research to clinical application is the direction for advancing to the next stage. The present article focuses on research progress on endodontic irrigation, especially concerning its antibacterial mechanism, characteristics and efficacy, to provide a reference for future clinical translation.

Research progress of bacterial biofilm eradication agents based on modifications of natural products / 药学学报

Bacterial biofilm widely exists in all kinds of bacteria, and is related to about 80 percent of bacterial infections. It is one of the main reasons for bacterial tolerance and resistance to existing antibiotics. Therefore, there is unmet clinical need for new anti-biofilm drugs. At present, there are three kinds of anti-biofilm agents under research, including biofilm inhibitors, biofilm dispersal agents and biofilm eradication agents. Among them, the biofilm eradication agent is unique, which can not only kill bacteria in biofilm but also eliminate biofilm as a monotherapy. Based on modifications of natural products with antibacterial activity, a variety of compounds with biofilm eradicating activities have been obtained, such as, acyldepsipeptides, pyrrolomycins, halogenated phenazines and halogenated 8-hydroxyquinolines. In this review, we summarize several major biofilm eradication agents above according to their structures and mechanisms.

Prevenção quaternária e suas implicações para a prática clínica: uma revisão sistemática / Quaternary prevention and its implications for the clinical practice: a systematic review

A crescente produção de iatrogenias justifica a discussão acerca da incorporação da prevenção quaternária na prática médica cotidiana. Este estudo identificou e sistematizou a produção de conhecimento sobre prevenção qua-ternária e sua implicação para a prática clínica. Trata-se de revisão sistemática descritiva apoiada na pergunta nor-teadora: "Quais são as evidências produzidas sobre prevenção quaternária e sua implicação para a prática clínica?" Realizou-se o levantamento bibliográfico entre agosto e setembro de 2020, utilizando-se o descritor "prevenção quaternária", nos idiomas inglês, português e espanhol. A análise dos 30 artigos produziu evidências sobre inter-venções médicas potencialmente danosas que justificariam a adoção da prevenção quaternária. O estudo provoca a comunidade médica a refletir sobre a incorporação da prevenção quaternária, visando uma prática assistencial menos iatrogênica, valorizando a medicina centrada na pessoa e os atributos da atenção primária à saúde. (AU)

The growing production regarding iatrogenesis justifies the discussion about the incorporation of quaternary pre-vention in the daily medical practice. This study identified and systematized the production of knowledge about quaternary prevention and its implications for the clinical practice. This is a systematic descriptive review supported by the guiding question: What evidence has been produced regarding quaternary prevention and its impact on the clinical practice? A bibliographic survey was carried out between August and September 2020 using the descriptor "quaternary prevention" in English, Portuguese and Spanish. The analysis of 30 articles produced evidence on po-tentially harmful medical interventions that would justify the adoption of quaternary prevention. The study invites the medical community to reflect on the incorporation of quaternary prevention, aiming for a less iatrogenic care practice, valuing person-centered medicine and the attributes of primary health care. (AU)

Planejando ações que contribuem para a prática da prevenção quaternária na atenção primária à saúde / Planeando acciones que contribuyen para la práctica de la prevención cuaternaria en la atención primaria de la salud / Planning actions that contribute to the practice of the quaternary prevention on the primary care to health

Objetivo: refletir com a equipe e desenvolver um planejamento de ações que contribuam para a prática da Prevenção Quaternária na Atenção Primária à Saúde. Método: Pesquisa Apreciativa com a participação de nove profissionais e cinco encontros, correspondentes as fases: discovery (descoberta), dream(sonho), design(planejamento) e destiny(destino). Foram explorados os encontros correspondentes às três últimas fases. Diários de campo foram utilizados, além da gravação dos depoimentos em áudio. Realizou-se a Análise Temática de Conteúdo.Resultados:emergiram três categorias: Organização do trabalho em equipe; Qualificação dos processos de trabalho;Desenvolvimento de ações de educação em saúde. Foram planejadas ações que contribuem para práticas voltadas à Prevenção Quaternária, como ações de educação permanente, escuta qualificada, garantia do acesso, trabalho colaborativo e reconhecimento do território. Conclusão:promoveu-se o diálogo e reflexões sobre as práticas e intervenções desnecessárias/inapropriadas realizadas nos serviços, bem como seus riscos, incorporando-se um planejamento de ações nessa direção

Objective:reflect with the team and develop a planning to the Quaternary Prevention that contribute to the practice on the Primary Care to Health. Method:Appreciative Inquiry with the participation of nine professionalsandfive meetings, corresponding the three stages: discovery, dream, design and destiny, with the three lasts been approached in this study, corresponding to the three lasts stages. Field journals were used, beyondbesides the record in audio of the depositions.Thematic Content Analysis was carried out. Results:in was emerged three categories: Team organization by means of meetings and channels of internal communication; Qualification of the work process on the Primary Care Health; and the Development the actions of education in health. It was planned collectively actions to contribute of practices facing the Quaternary Prevention, like team meetings, movements of Continued Education in Health, qualifies listening, time management, access ensure, collaborative work and territory recognizing. Conclusion:it was promoted the dialog and reflections on the necessary/unnecessary practices of intervention made on the services, as well as their risks, incorporating anaction plan in this direction

Objetivo:reflexionar conel equipo ydesarrollar un plano de acciones que contribuyan para la práctica de la Prevención Cuaternaria en la atención Primaria de la Salud. Método: Investigación Apreciativa con la participación de nueve profesionales. Realizada en cinco reuniones, las cuales correspondieron a fases: discovery(descubrimiento), dream(sueño) design(planes) y destiny(destino), siendo tratadas, en este estudio, las reuniones que correspondieron a las tres últimas fases. Diarios de campo fueron usados para el registro de las informaciones, además de la grabación de las declaraciones en audios. Se realizó el Análisis Temático de Contenido. Resultados: surgieron tres categorías: Organización del trabajo en equipo; Calificación de los procesos de trabajo; Desarrollo de acciones de educación en salud. Fueron planeadas acciones que contribuyen para prácticas volcadas a la Prevención Cuaternaria, como acciones de educación permanente, escucha calificada, garantía del acceso, trabajo colaborativo y reconocimiento del territorio. Conclusión: se promovió el diálogo y reflexiones sobre las prácticas e intervenciones desnecesarias/inapropiadas, realizadas en los servicios, así como sus riesgos, incorporando unplan de acción enesta dirección

Sistematização da propedêutica de massas cervicais­da Atenção Primária à Terciária / Systematization of neck masses propaedeutics ­from Primary to Tertiary Care

Introdução: As massas cervicais são causas frequentes de encaminhamentos aos ambulatórios de otorrinolaringologia, muitas vezes com pouca abordagem na atenção primária à saúde. Sendo assim, a falta de uma rotina de manejo pode deixar o médico assistente inseguro e por vezes confuso quanto ao caminho de investigação a ser seguido, tornando-se necessário elaborar e aplicar uma rotina propedêutica que facilite e direcione o raciocínio clínico para diagnóstico de massas cervicais. Desenvolvimento: Através de revisão da literatura de artigos científicos coletados nos portais Medline, Lilacse PubMed,utilizando descritores específicos como: necklump; head and neck cancer; epidemiology of head and neck cancere consulta à literatura médica específica, foi elaborado um fluxograma para diagnóstico inicial das massas cervicais. Conclusão: Os autores elaboraram um fluxograma para a investigação e diagnóstico das massas cervicais de fácil memorização e aplicabilidade, adequado às condições estruturais de instituições públicas, e visando melhor atendimento, minimização de riscos, bem como qualificação dos profissionais. O fluxograma proposto visa ao diagnóstico diferencial entre doenças malignas e benignas, focando o que pode ser feito em nível de atenção primária à saúde.

Introduction: Neck masses are frequent causes of referrals to otorhinolaryngology clinics, often with a little approach in primary health care. Therefore, the lack of a usual approach can make the attending physician unsafe and prone to error, thus, it is necessary toelaborate a propaedeutic routine for the diagnosis of neck masses. Development: From a literature review of scientific articles collected on Medline, Lilacsand PubMedportals using specific descriptors such as: neck lump; head and neck cancer; epidemiology of head and neck cancer and using specific medical literature, a flowchart had been prepared for initial diagnosis of neck masses. Conclusion: The authors sought a practical form, easy to remember and applicable, appropriate to public institutions, aiming for better care, minimizing risks as well as the qualifications of professionals, targeting on the differential diagnosis between malignant and benign diseases, and what can be done at primary level of health care.

Prevenção Quaternária: da medicalização social à atenção integral na Atenção Primária à Saúde / Prevención Cuaternaria: de la medicalización social a la atención integral en Atención Primaria de Salud / Quaternary Prevention: from social medicalization to integral care on the Primary Health Care

Resumo Objetivo conhecer as percepções e perspectivas dos profissionais da saúde para o desenvolvimento da Prevenção Quaternária na Atenção Primária à Saúde. Método Pesquisa Apreciativa, que aplicou as fases do "ciclo 4-D", na língua inglesa: discovery, dream, design e destiny. Este artigo analisa os resultados referentes à fase discovery (descoberta), de cujos dois encontros correspondentes participaram nove profissionais da Atenção Primária. Realizou-se análise de conteúdo, seguindo as etapas de pré-análise, exploração do material e tratamento dos dados. Resultados a Prevenção Quaternária representa uma potencialidade na inovação da atenção, com possibilidade de reduzir a medicalização social, que ocorre mediante a sobremedicalização, sobrediagnósticos e sobretratamentos. Como perspectivas, é apresentada a necessidade de conscientização da sociedade e dos profissionais sobre esses excessos e de (re) posicionamento da indústria, do mercado e da mídia sobre o significado de "estar saudável". Conclusão e implicações para prática é necessário atentar para a ética na prestação de cuidados quanto ao rastreio, diagnóstico e tratamento de doenças. A Prevenção Quaternária tem potencial para reverter um modelo hegemônico em relação ao cuidado de indivíduos e famílias ao fomentar a integralidade. A Enfermagem, como prestadora do cuidado, junto com a equipe multiprofissional, deve incorporar ações de Prevenção Quaternária em suas práticas.

Resumen Objetivo conocer las percepciones y perspectivas de los profesionales de la salud para el desarrollo de la Prevención Cuaternaria en Atención Primaria de Salud. Método Investigación Apreciativa, que aplicó las fases del "ciclo 4-D", en inglés: discovery, dream, design y destiny Este artículo analiza los resultados de la fase discovery (descubrimiento), en cuyos dos encuentros correspondientes participaron nueve profesionales de Atención Primaria. Se realizó análisis de contenido, siguiendo los pasos de pre-análisis, exploración de material y procesamiento de datos. Resultados la Prevención Cuaternaria representa un potencial en la innovación asistencial, con posibilidad de reducir la medicalización social, que se produce por sobremedicalización, sobrediagnóstico y sobretratamiento. Como perspectivas, se presenta la necesidad de concienciar a la sociedad y los profesionales sobre estos excesos y de (re) posicionar a la industria, el mercado y los medios de comunicación sobre el significado de "estar sano". Conclusión e implicaciones para la práctica es necesario prestar atención a la ética en la prestación de cuidados en cuanto al cribado, diagnóstico y tratamiento de enfermedades. La Prevención Cuaternaria tiene el potencial de revertir un modelo hegemónico en relación al cuidado de las personas y familias al promover la integralidad. La Enfermería, como proveedora de cuidados, junto con el equipo multidisciplinario, deben incorporar las acciones de Prevención Cuaternaria en sus prácticas.

Abstract Objective to know the perceptions and perspectives of health professionals for the development of Quaternary Prevention in Primary Health Care. Method an Appreciative Research, which applied the phases of the "4-D cycle": discovery, dream, design and destiny. This article analyzes the results referring to the discovery phase (discovery), in which nine professionals from Primary Care participated in two corresponding meetings. Content analysis was performed, following the steps of pre-analysis, material exploration and data treatment. Results the Quaternary Prevention represents a potentiality in care innovation, with the possibility of reducing social medicalization, which occurs through over-medicalization, over-diagnosis and overtreatment. As perspectives, it is presented the need for society and professionals to be aware of these excesses and the (re) positioning of the industry, market and media about the meaning of "being healthy". Conclusion and implications for the practice it is necessary to pay attention to ethics in care provision regarding screening, diagnosis and treatment of diseases. Quaternary Prevention has potential to revert a hegemonic model in relation to the care of individuals and families by promoting integrality. Nursing, as a care provider, together with the multi-professional team, must incorporate Quaternary Prevention actions in its practices.

La medicalización de la vida / The medicalization of life

Luego de una reflexión sobre la felicidad del ser humano y la tendencia moderna de equipararla a la salud, se hace un recuento evolutivo del concepto de salud y enfermedad. Se desarrolla la medicalización de la vida, entendida como la invasión de la medicina en aspectos de la sociedad y la vida que no son patológicos en sí mismos ni pasibles de tratamiento, en su conceptualización, proceso, protagonistas y consecuencias. Se refiere las no-enfermedades y la prevención cuaternaria, como procesos colaterales. Se concluye con una crítica literaria de la medicalización.

After a reflection on the happiness of the human being and the modern tendency to equate it to health, an evolutionary account of the concept of health and disease is made. The medicalization of life is developed, understood as the invasion of medicine in aspects of society and life that are not pathological in themselves or subject to treatment, in its conceptualization, process, protagonists and consequences. Non-diseases and quaternary prevention are referred to as collateral processes. It concludes with a literary critique of medicalization.

Effects of binary dance rhythm compared with quaternary dance rhythm in fatigue, sleep, and daily sleepiness of individuals with Parkinson's disease: A randomized clinical trial

Abstract Aim: People with Parkinson's disease constantly demonstrate low levels of physical activity, which is why dance has become increasingly important for the treatment of the disease. This study aimed to analyze the influence of binary and quaternary rhythm on fatigue, sleep, and daytime sleepiness in individuals with Parkinson's disease. Methods: 31 individuals participated in this randomized clinical trial with a mean age of 66.6 ± 10.2 years, 71% were male and 29% were female, allocated into two groups, binary and quaternary, where they participated in different dance interventions lasting 12 weeks. A questionnaire was applied including personal and clinical information; Mental State Mini-Examination (MMSE), Hoehn and Yahr (H&Y), Fatigue Severity Scale (FSS), Sleep Scale for Parkinson's Disease (PDSS), and Daytime Sleepiness Epworth Scale (ESS). Results: The groups that participated in binary rhythm classes showed improvement in sleep quality and daytime sleepiness after 12 weeks of intervention. However, no significant differences were found in the group that participated in the quaternary rhythm classes. Moreover, it was noted that the binary group managed to raise the heart rate during the 12 weeks of intervention, given that these results were not obtained in the quaternary group. Conclusion: The results showed the effectiveness of binary rhythm on non-motor symptoms and heart rate increase in individuals with Parkinson's disease. Thus, it is concluded that the binary rhythm was more effective than the quaternary rhythm.

Resistencia antimicrobiana y daño al medio ambiente, en el contexto COVID-19: Una revisión sistemática / Antimicrobial resistance and damage to the environment, in the context of COVID-19: A systematic review

Las pautas de abordaje de los pacientes con COVID-19, al inicio de la pandemia, se realizó por ensayo, ya que se desconocía la fisiopatología de esta nueva enfermedad, entre las acciones médicas se describió el uso de antiboticoterapias de manera indiscriminada, también se instó a realizar desinfección profundas, muchas veces, con sustancias químicas con impacto negativo en la salud ambiental, tanto a nivel de la microbiota encargada del equilibrio ecológico, como en la contaminación ambiental, principalmente del agua. Aunado a esto, debido a la emergencia sanitaria, se requirió usar en mayor cantidad equipos de protección personal de un solo uso y, como consecuencias el aumento de desechos sólidos peligrosos, cuya composición son de degradación tardía. Por tanto, la respuesta sanitaria ante la pandemia, probablemente fue escenario para acentuar la resistencia antimicrobiana y el riesgo de daño ambiental. En este, artículo se realizó una revisión sistemática de la literatura científicas en torno a estos tópicos, las evidencias demostraron el aumento de mecanismos de resistencias de bacterias, principalmente, patógenas del tracto respiratorio. De igual manera, el impacto negativo por uso irracional de desinfectantes químicos, traducido en bacterias resistentes especialmente a compuestos de amonio cuaternario. La bioacumulación y biomagnificación de estas sustancias ha provocado toxicidad, mutaciones, propagación de genes de resistencia. Por lo tanto, se sugiere que se priorice las estrategias que mitiguen el rastro que ha venido extendiéndose al paso de la pandemia por el SAR- CoV-2(AU)

The guidelines for the approach of patients with COVID-19, at the beginning of the pandemic, were carried out by trial, since the pathophysiology of this new disease was unknown, among the medical actions the use of antibiotic therapies indiscriminately was described, also the urged to carry out deep disinfection, many times, with chemical substances with a negative impact on environmental health, both at the level of the microbiota responsible for the ecological balance, and in environmental pollution, mainly of water. In addition to this, due to the health emergency, it was required to use more single-use personal protective equipment and, as a consequence, the increase in hazardous solid waste, whose composition is delayed degradation. Therefore, the health response to the pandemic was probably the setting to accentuate antimicrobial resistance and the risk of environmental damage. In this article, a systematic review of the scientific literature on these topics was carried out, the evidence demostrated the increase in resistance mechanisms of bacteria, mainly pathogens of the respiratory tract. Anyways, the negative impact due to the irrational use of chemical disinfectants, translated into resistant bacteria, especially to quaternary ammonium compounds. The bioaccumulation and biomagnification of these substances has caused toxicity, mutations, propagation of resistance genes. Therefore, it is suggested that strategies be prioritized that mitigate the trail that has been spreading as the pandemic passed by SAR-CoV-2(AU)

Ancient DNA Damage Analysis of Late Quaternary Mammalian Fossil Samples in Northeast China / 中国生物化学与分子生物学报

The advancement of the next generation sequencing (NGS) technology has promoted the development of ancient DNA research. Ancient DNA has made outstanding contributions in various fields such as human origin, animal evolution, etc. How to effectively extract and mine the genetic information from fossil and sub-fossil remains excavated from specific locations is a prerequisite for optimizing their important roles in many fields. In this study, we correlated the two main indicators of DNA damage (terminal base replacement rate, average fragment length) with the possible factors such as the burial time, geological epochs, tissue types, and sequencing library construction methods. The results show that the end base replacement rate of ancient DNA from Northeastern China is positively correlated with the water content of the environment and the ages of the samples. Among samples of different geological epochs, ancient DNA end base replacement rates have significant differences. On the contrary, different tissue types of the remains have no significant effects on the end base replacement rate of ancient DNA. The average fragment size of the molecules has no obvious correlation with the factors mentioned above. The results provide both solid data for investigating the characteristics of ancient DNA from specimens collected in Northeastern China, and valuable information for collecting appropriate samples from different geographical locations and the downstream storage before wet lab procedures after excavation.

Evaluation of current disinfection practice of transvaginal ultrasound probes in a Philippine Tertiary Referral Hospital: A comparative study on the performance of manual reprocessing methods

Objectives@#There are no standard infection control regulations in transvaginal ultrasound probe disinfection followed in the most prominent local public tertiary referral hospital. Likewise, no studies have evaluated the efficacy of the current method that uses an inexpensive multipurpose antiseptic spray solution. This study aims to evaluate the efficacy of the current practice of manual disinfection of TVS probes and compare it with the performance of an acceptable manual reprocessing method. @*Methods@#A prospective, randomized, controlled study was carried out using a crossover, quasi-experimental design, collecting 119 total samples from the ultrasound transducers before (35 samples) and after disinfection with two manual reprocessing methods, either a locally manufactured multipurpose antiseptic spray (A-Septic® Multipurpose Antiseptic Spray) that is currently used for disinfection or Mikrozid Sensitive®, a ready to use impregnated wipes (42 samples each arm). Disinfection efficacy was evaluated based on microbial culture results. @*Results@#Before disinfection, bacterial growth was observed in 77.1% (27/35) of the probes. After disinfection, 80.95% (34/42) remained contaminated with the antiseptic spray and 21.43% (9/42) with the wipes. The cultures revealed many environmental and pathogenic bacterial isolates, including Burkholderia, Staphylococcus, Acinetobacter, Diphtheroids, and Pseudomonas. @*Conclusions@#The currently used method for disinfecting transvaginal transducers in the division is not adequate for decontamination and decreasing the risk of cross contamination among patients. The results call for aggressive disinfection measures and highlight the need to update local standards and formulate and institutionalize these recommendations.

Physicochemical properties and biological effects of quaternary ammonium methacrylates in an experimental adhesive resin for bonding orthodontic brackets

Abstract Fixed orthodontic appliances may lead to biofilm accumulation around them that may increase caries risk. This study aimed to evaluate the influence of quaternary ammonium methacrylates (QAMs) on the physicochemical properties, cytotoxicity, and antibacterial activity of adhesive resins for orthodontic purposes. Methodology: A base resin was prepared with a comonomer blend and photoinitiator/co-initiator system. Two different QAMs were added to the base adhesive: dimethylaminododecyl methacrylate at 5 wt.% (DMADDM) or dimethylaminohexadecyl methacrylate (DMAHDM) at 10 wt.%. The base adhesive, without QAMs, (GC) and the commercial Transbond™ XT Primer 3M (GT) were used as control. The resins were tested immediately and after six months of aging in the water regarding the antibacterial activity and shear bond strength (SBS). The antibacterial activity was tested against Streptococcus mutans via metabolic activity assay (MTT test). The groups were also tested for the degree of conversion (DC) and cytotoxicity against keratinocytes. Results: The resins containing QAM showed antibacterial activity compared to the commercial material by immediately reducing the metabolic activity by about 60%. However, the antibacterial activity decreased after aging (p<0.05). None of the groups presented any differences for SBS (p>0.05) and DC (p>0.05). The incorporation of DMADDM and DMAHDM significantly reduced the keratinocyte viability compared to the GT and GC groups (p<0.05). Conclusion: Both adhesives with QAMs showed a significant reduction in bacterial metabolic activity, but this effect decreased after water aging. Lower cell viability was observed for the group with the longer alkyl chain-QAM, without significant differences for the bonding ability and degree of conversion. The addition of QAMs in adhesives may affect the keratinocytes viability, and the aging effects maybe decrease the bacterial activity of QAM-doped materials.

Prevenção quaternária e medicalização: conceitos inseparáveis / Prevención cuaternaria y medicalización: conceptos inseparables / Quaternary prevention and medicalisation: inseparable concepts

Prevenção Quaternária (P4) é a ação de identificar pacientes em risco de sobremedicalização, para protegê-los de novas invasões médicas e sugerir-lhes intervenções eticamente aceitáveis. Recentemente, três artigos europeus propuseram uma nova definição: "proteger indivíduos de intervenções mais danosas que benéficas". O objetivo é discutir criticamente essa proposta. Sete críticas à definição original foram identificadas e analisadas. Cinco são improcedentes: (1) Eticamente vaga; (2) Escopo restrito; (3) Cria etapa desnecessária; (4) Focalização na medicalização; (5) Desmedicalização sem base científica. As remanescentes não justificam uma nova definição: (6) Mudança na representação visual; (7) Foco na Medicina Baseada em Evidências (MBE). A nova proposta reduz o escopo da P4 e o protagonismo do profissional. A definição original é robusta e desafia a evitar a iatrogenia social/cultural decorrente da sobremedicalização, parcialmente inapreensível via MBE. (AU)

Prevención Cuaternaria (P4) es la acción de identificar pacientes en riesgo de sobremedicalización, para protegerlos de nuevas invasiones médicas y sugerirles intervenciones éticamente aceptables. Recientemente, tres artículos europeos propusieron una nueva definición: "proteger a los individuos de intervenciones más dañosas que benéficas". El objetivo es discutir críticamente esa propuesta. Se identificaron y analizaron siete críticas a la definición original. Cinco son improcedentes: (1) Éticamente vaga; (2) Alcance restringido; (3) Crea etapa innecesaria; (4) Enfoque en la medicalización; (5) Desmedicalización sin base científica. Las restantes no justifican una nueva definición: (6) Cambio en la representación visual; (7) Enfoque en la Medicina Basada en Evidencias (MBE). La nueva propuesta reduce el alcance de la P4 y el protagonismo del profesional. La definición original es robusta y desafía la iatrogenia social/cultural proveniente de la sobremedicalización, parcialmente inalcanzable vía la MBE. (AU)

Quaternary Prevention (P4) is an action taken to identify patients at risk of overmedicalisation, to protect them from new medical invasions, and to suggest interventions ethically acceptable. Recently, three European articles have proposed a new definition: "to protect individuals from more harmful than beneficial interventions". The objective is to discuss this proposal critically. We have identified and analysed seven criticisms to P4 original definition. Five are unfounded: (1) Ethically vague; (2) Restricted scope; (3) Creation of an unnecessary step; (4) Focus on medicalisation; (5) Demedicalisation non-scientific based. The remaining two do not justify a new definition: (6) Changing visual representation; (7) Centeredness on Evidence-Based Medicine (EBM). The new proposal reduces the scope of P4 and the professional role. The original definition is robust and incorporates the challenge of social/cultural iatrogeny resulting from overmedicalisation, partially unattainable via EBM. (AU)

Action of benzalkonium chloride in different pH

Ammonium quaternary compounds are widely used in poultry and swine production as disinfectants in the control of pathogens. They act on gram-positive bacteria, gram-negative bacteria, enveloped fungi and viruses. However, in some conditions of pH and presence of organic matter can be inactivated. This study evaluated the action of ammonium quaternary compounds at 1:1,000 and 1:2,000 dilutions against Salmonella enterica serovarTyphimurium and Salmonella enterica serovar Enteritidis in the presence of three different organic matter simulators, fetal bovine serum, skim milk and whole milk concentration of 1, 3, 5, and 7% and at pH 6 and 9, with 15 min of contact. It was possible to verify that the organic matter simulators adjusted in the same conditions of contact time and percentage, in the in vitro tests, presented different results and the fetal bovine serum did not inactivate the disinfectant. However, the best result against S. Typhimurium and S. Enteritidis was obtained at pH 6 at the dilution of 1:1,000 in all organic matter simulators.