Terapêutica adjuvante na modulação da resposta imune no tratamento da doença periodontal: uma revisão de literatura / Adjuvant therapeutic in the modulation of the immune response in the treatment of periodontal disease: a literature review

Introdução: A Doença Periodontal tem caráter multifatorial, já que depende de condições microbiológicas, imunogenéticas e sistêmicas do hospedeiro. Representa inflamação crônica das estruturas de suporte e proteção dental. Desencadeia uma complexa estimulação imunológica, bem como a produção de citocinas inflamatórias, que mediam a destruição óssea e de tecido conjuntivo, provocando perda dental e complicações à distância. A compreensão da etiopatogênese, permitiu os conceitos de modulação, que referem-se às modificações dos aspectos danosos da resposta inflamatória. Objetivo: O presente artigo tem como objetivo realizar uma revisão dos estudos sobre as principais terapêuticas adjuvantes na modulação da resposta imune frente à doença periodontal. Revisão de Literatura: Foi realizada uma revisão da literatura, onde foram selecionados artigos científicos em inglês, publicados entre os anos 2005 a 2020, por meio das bases de dados PubMed e ScienceDirect. No decorrer das buscas, foram utilizadas as palavraschaves "Inflamation", "Periodontal Disease", "Subantimicrobial Dose of Doxycycline", "Periodontal Disease", "Host Response Modulation". Resultados e Conclusão: A literatura é bem promissora em relação à terapia de controle complementar da doença periodontal. Dessa forma, novas pesquisas nessa área podem trazer inúmeros beneficos aos pacientes, sendo, assim, um novo caminho para o contorno da resistência bacteriana(AU)

Introduction: Periodontal disease has a multifactorial character, depending on the host's microbiological, immunogenetic and systemic conditions. It represents chronic inflammation of dental support and protection structures. It triggers a complex immune stimulation, as well as the production of inflammatory cytokines, which mediate bone and connective tissue destruction, causing tooth loss and complications at a distance. The understanding of etiopathogenesis allowed the concepts of modulation, which refers to the modifications of the harmful aspects of the inflammatory response. This article has the escape of conducting a review of studies on the main mechanisms of modulation against periodontal disease. Objective: This article aims to rev iew the studies on the main modulation mechanisms in the face of periodontal disease. Literature Review: A literature review was carried out in which scientific articles were selected in English, published between 2005 and 2020, through the PubMed and ScienceDirect databases. During the searches, the keywords "Inflammation", "Periodontal Disease", "Subantimicrobial Dose of Doxycycline", "Periodontal Disease", "Host Response Modulation". Results and Conclusion: The literature is very promising with complementary control therapy for periodontal disease. Thus, new research in this area can bring countless benefits to patients, thus being a new way to bypass bacterial resistance(AU)

Photobiomodulation drives pericyte mobilization towards skin regeneration.

Photobiomodulation is being widely applied for improving dermal or mucosal wound healing. However, the underlying cellular and molecular processes that directly contribute to its effects remain poorly understood. Pericytes are relevant cells involved in the wound microenvironment and could be one of the main targets of photobiomodulation due to their plasticity and perivascular localization. Herein, we investigate tissue repair under the photobiomodulation stimulus using a pericyte labeled (or reporter) transgenic mice. Using a model of two contralateral back wounds, one the control and the other photoactivated daily (660 nm, 20 mW, 0.71 W/cm2, 5 J/cm2, 7 s, 0.14 J), we showed an overall influx of immune and undifferentiated cells and higher mobilization of a potent pericyte subpopulation (Type-2 pericytes) in the photoactivated wounds in comparison to the controls. Doppler analysis showed a significant increase in the blood flow in the photoactivated wounds, while marked vascular supply was observed histologically. Histochemical analysis has indicated more advanced stages of tissue repair after photoactivation. These data suggest that photobiomodulation significantly accelerates tissue repair through its vascular effects with direct recruitment of pericytes to the injury site.