Produção de mudas clonais de pupunheira por meio do enraizamento adventício de perfilhos laterais.

A pupunheira (Bactris gasipaes Kunth.) é a uma espécie de palmeira nativa da região Amazônica que vem sendo cultivada com sucesso, como uma alternativa à produção de palmito, tornando-se uma fonte de diversificação e melhoria de renda para o pequeno e médio proprietário rural (Salgado et al., 2020). Segundo Moreira e Godinho (2017), trata-se de um exemplo bem- sucedido da evolução de uma espécie silvestre amazônica em um monocultivo produtivo e de comercialização consolidada em diversas regiões produtoras no Brasil, colocando-o em destaque na produção mundial de palmito. Como vantagens do palmito da pupunheira, em comparação com outras espécies, citam-se a capacidade de perfilhamento, a rusticidade, a precocidade de corte, a elevada produtividade, a produção de palmito tenro de alto valor nutritivo e maior tolerância à oxidação

Miniestaquia e teores de compostos fenólicos de diferentes genótipos de erva-mate.

O valor comercial da erva-mate deve-se ao consumo tradicional de chimarrão, tererê e chás, com potencial também na indústria farmacológica e cosmética. Atualmente, os programas de propagação vegetativa da erva-mate são considerados uma inovação aos sistemas tradicionais de produção, priorizando a multiplicação de genótipos superiores desenvolvidos por programas de melhoramento. O objetivo da presente pesquisa foi avaliar o potencial rizogênico e os teores de compostos fenólicos de miniestacas de 10 genótipos de erva-mate (EC20, EC21, EC24, EC26, EC27, EC28, EC50, EC53, EC54 e BRS BLD Aupaba). Os compostos fenólicos totais foram determinados a partir de 25 miniestacas, pelo método de Folin-Ciocalteu. Para a miniestaquia, o delineamento experimental foi inteiramente casualizado, com 10 tratamentos (genótipos) com 4 repetições de 10 miniestacas (5 ± 1 cm de comprimento com um par folhas), sendo a base das miniestacas tratadas com 3000 mg L-1 de ácido indolbutírico. O experimento foi instalado em abril de 2019 e após 120 dias em casa de vegetação foram avaliadas a porcentagem de enraizamento e o número médio de raízes por miniestaca. A porcentagem de enraizamento variou de 5 a 72,5%, enquanto o número de raízes variou entre 0,63 e 7,26. Os teores de compostos fenólicos totais variaram de 73,98 a 111,5 mg g-1. Para todas as variáveis houve diferenças significativas entre os genótipos. Dadas as respostas dependentes do genótipo, protocolos específicos para aumentar a eficiência de propagação podem ser necessários para cada matriz, especialmente aqueles com perfil fitoquímico de interesse.Resumo

Removal bacterial biofilm in patients undergoing fixed orthodontic treatment: literature review

The aim of the study is the avaluetion of a literature review on remuval bacterial biofilm in patients undegoing fixed orthodontic treatmen

Air polishing therapy in supportive periodontal treatment: a systematic review

The aim of the study was an analysis of the tooth surface roughness and clinical parameters by systematic review of the literature to compare the efficacy of airpolishing to hand or ultrasonic instrumentation during supportive periodontal therapy (SPT). It was using a research question using PICO method. The bibliographic researches were performed in four different databases. For the search of the articles, the work was divided into two parts: the first part for analyse the clinical parameters of the air polishing in the supportive periodontal therapy, the second part to analyse the effects of air-polishing on hard tissues. From 164 articles concerning clinical parameters, 49 were reached with the criteria of inclusion; from 64 articles concerning hard tissues it has reached 4. Excluding of the doubles, 12 were chosen for the literature review: 8 RCTs, 1 retrospective cohort study and 3 in vitro studies. The scientific literature has shown that air-polishing and scaling and root planing in supportive periodontal therapy give similar clinical results, but airpolishing seems to preserve the hard tissues of the tooth more than the traditional treatment with ultrasonic or manual instrumentations

Pidotimod for the prevention of acute respiratory infections in healthy children entering into daycare: a double blind randomized placebo-controlled study

Acute respiratory tract infections (ARTIs) are very common in pediatric age and reach a peak in the first 4 years of life, especially in children attending daycare. Pidotimod, a synthetic immunostimulant, may reduce the incidence of ARTIs in children with predisposing risk factors. Nevertheless studies on healthy children are presently lacking. We performed a double-blinded randomized placebo-controlled trial study to assess the efficacy of Pidotimod in a population of 3-year-old healthy children who just entered kindergarten. The main outcome was the incidence of respiratory infections in this population and the secondary outcome was the prescription of antibiotics. The study group consisted of healthy 3-year-old children who had not yet attended day-care centers. Patients were enrolled by a convenience sample of 17 family pediatricians (FP). Children were randomized to receive either Pidotimod 400 mg per os or placebo twice daily for the last 10 days of each month from October 2013 to April 2014. Any time a child presented to his/her FP with fever and ARTI was diagnosed, clinical and therapeutic data were collected. A total of 800 children were pre-screened, 733 did not meet the inclusion criteria and 10 refused to participate. Of the 67 eligible subjects, 57 were successfully enrolled within the study recruitment period and randomized to receive Pidotimod (n = 29) or placebo (n = 28). Eight children were lost to follow-up. In the final analysis were thus included 24 children who received Pidotimod and 25 who received placebo. The incidence rate ratio for respiratory infections was 0.78 (95%CI 0.53 to 1.15, p = 0.211) for Pidotimod vs. placebo. The corresponding risk ratio for antibiotic usage was 0.56 (95%CI 0.27 to 1.16, p = 0.120). In our trial, Pidotimod did not prove to be statistically superior to placebo for the prevention of ARTI in a population of healthy children who entered kindergarten. However, Pidotimod showed some potential as a means for reducing antibiotic usage in these children