Abstract: Bone quality is an important issue in dentistry. Low bone density may be associated with more severe periodontitis, and may influence implant therapy success. Recent evidence suggests that physical activity can improve alveolar bone quality. Irisin is an exercise-mediated peptide that might be involved in this process. We assessed the effect of exercise and that of intra-peritoneal irisin administration on bone quality in healthy and osteoporosis-induced rodents. This study was registered at PROSPERO (CRD42020184140), and followed PRISMA guidelines. A search by two independent examiners was conducted in five databases and gray literature up to July 2021, without restrictions regarding language or date of publication. Initially, they analyzed retrieved titles and abstracts (n=3,844) based on eligibility criteria. Of this total, 19 studies remained for full-text reading, and 16 proceeded to the data extraction and quality assessment phases. Meta-analyses were conducted (n= 6 studies) to establish the effects of irisin administration on cancellous bone mineral density (BMD). Exercise or irisin administration enhanced bone quality, but the meta-analysis showed that BMD increased only slightly in osteoporotic rodents (BMD: mean difference 0.03 mg/cm3 - 95% CI 0.01-0.05). This indicates that they had no significant benefits on the bones of healthy animals. Implications of key findings evidence the potential of irisin as an agent able to mitigate bone loss caused by osteoporosis, an outcome that could favor dental rehabilitation. More studies investigating the effect of irisin on alveolar bone are needed to elucidate its therapeutic viability and implications.

Resumo O objetivo deste artigo é mapear autores e teorias utilizados como referência por pesquisadores da área de comunicação e sociabilidade no Brasil. O corpus selecionado inclui 98 artigos da Compós no período de 2006 a 2015, coletados do grupo de trabalho homônimo. Esses resultados integram uma pesquisa mais ampla que almeja identificar as teorias contemporâneas que sustentam o campo da comunicação no país. A análise destaca dois eixos centrais nos estudos inscritos nessa área: o próprio sujeito (a questão da subjetividade, da autonomia e da opressão); 2) a sociedade em que ele se inscreve (a sociedade capitalista, de classes, mas também a sociedade em rede formada pelos novos dispositivos tecnológicos).

Abstract The aim of this paper is to map authors and theories used as reference by researchers in the field of Communication and Sociability in Brazil. The selected corpus includes 98 articles from Compós during the period from 2006 to 2015, collected from the homonymous working group. These results integrate a broader research that aims to identify the contemporary theories that underpin the field of Communication in the country. The analysis highlights two central axes in the studies regarded in this area: the subject itself (the question of subjectivity, autonomy and oppression); the society in which it is inscribed (capitalist society, society of classes, but also the network society formed by the new technological devices).

Resumo O artigo discute o potencial do conceito de modo de endereçamento para analisar a maneira como programas de rádio se relacionam com a sua audiência por meio da construção de um estilo próprio. Analisou-se duas semanas (edições de 18 a 23 de julho de 2016 e de 10 a 15 de abril de 2017) do jornal da rádio Itatiaia. de Minas Gerais, a partir de algumas das principais dimensões de análise do modo como o programa se endereça ao público. Constatou-se que o papel da apresentadora, a organização de temas, a distribuição de profissionais na cobertura jornalística e a publicidade são componentes fundamentais nas estratégias de endereçamento do Jornal da Itatiaia.

Abstract The article discusses the potential of the mode of address concept for analyzing how radio programs relate to their audience by constructing a particular style. Two weeks of the Itatiaia radio news program from Minas Gerais, Brazil, were analyzed (from 18 to 23 July 2016 and 10 to 15 April 2017) considering some of the main dimensions of the analysis of how the program addresses the public. It was found that the role of the anchor, the organization of issues and distribution of professionals in journalistic coverage and advertising are fundamental components of the news program’s strategies of address.

Resumen El artículo discute el potencial del concepto de modo de direccionamiento para analizar la forma en que los programas de radio se relacionan con su audiencia a través de la construcción de un estilo propio. Se analizó dos semanas (ediciones del 18 al 23 de julio de 2016 y del 10 al 15 de abril de 2017) del periódico de la radio Itatiaia (Minas Gerais, Brasil) a partir de algunas de las principales dimensiones de análisis del modo en que el programa se dirige al público. Se constató que el papel de la presentadora, la organización de temas, la distribución de profesionales en la cobertura periodística, y la publicidad son componentes fundamentales en las estrategias del programa dirigirse a su publico.