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Tricuspid valve prolapse and annular disjunction evaluated by cardiac magnetic resonance: a new method resonance
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Morales, Kevin Rafael De Paula

; Fonseca, Eduardo Kaiser Ururahy Nunes

; Santos, Artur Ramos Sarmet dos

; Barros, Gabriela Ribeiro Prata Leite

; Ishikawa, Walther Yoshiharu

einstein (São Paulo)

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2023, Volume 21 elocation eAI0386

Abstract: En | Text: En | PDF: En

https://doi.org/10.31744/einstein_journal/2023ai0386

Cardiac Manifestations Associated With Coronavirus Disease: A Case Report Disease
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Barros, Gabriela Ribeiro Prata Leite

; Garofo, Raphaela Tereza Brigolin

; Abreu, Bernardo Noya Alves de

; Carneiro, Adriano Camargo de Castro

; Mendonça, André Luiz Esteves

International Journal of Cardiovascular Sciences

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2023, Volume 36 elocation e20210026

Abstract: En | Text: En | PDF: En

Abstract This study presents a 47-year-old female patient, with a history of diabetes, who contracted SARS-CoV-2 and exhibited cardiovascular complications. 47yearold yearold 47 year old patient diabetes SARSCoV2 SARSCoV SARS CoV 2 SARS-CoV- complications 4 SARS-CoV

https://doi.org/10.36660/ijcs.20210026

O uso de plantas medicinais na atenção primária à saúde: revisão integrativa
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Patrício, Karina Pavão

; Minato, Arthur Cesar dos Santos

; Brolio, Ana Flavia

; Lopes, Marina Amorim

; Barros, Gabriela Ribeiro de

; Moraes, Vanessa

; Barbosa, Guilherme Correa

Ciência & Saúde Coletiva

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feb 2022, Volume 27 N. 2 Pages 677 - 686

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O uso de plantas medicinais (PM) favorece a integralidade do cuidado na atenção primária à saúde (APS), valorizando o saber popular e o autocuidado. Esta revisão integrativa de literatura objetiva analisar estudos sobre a inserção do uso de PM na APS. A estratégia PICO norteou a busca de evidências, reunindo 18 artigos publicados de janeiro de 2015 a agosto de 2020 nos bancos de dados Biblioteca Virtual de Saúde e PubMed. As variáveis de análise foram o conhecimento dos profissionais da saúde da APS sobre PM e políticas associadas, o uso de PM pelos usuários, destacando seu perfil, fatores que favorecem o uso e a falta de segurança no uso de PM. A literatura aponta insuficiência de conhecimento dos profissionais de saúde sobre as políticas de práticas integrativas e complementares e o uso de plantas para fins medicinais. Os principais usuários são mulheres, idosas, com baixa renda e escolaridade, tanto no Brasil quanto em outros países. Sobre a segurança no uso de PM, frequentemente não há correta identificação de espécie, origem, preparo e dose adequada para cada caso. Por fim, a não abordagem desses conteúdos durante a formação de profissionais da saúde gera menos conhecimento, menos pesquisas e mais preconceito por falta de informação, prejudicando o incentivo e divulgação à comunidade.

Abstract Medicinal plant (MP) use supports comprehensiveness of care in Primary Health Care (PHC), enabling appreciation of popular knowledge and self-care. This integrative literature review aims to analyze researches that approach the insertion of using MP in PHC. PICO strategy was used as a guideline in search of evidence, reuniting 18 articles published between January 2015 and August 2020, in the Virtual Health Library and PubMed databases. The variables of analysis were knowledge of PHC healthcare professionals about MP and associated policies, MP use by its users, highlighting their profile, the reasons that lead to the use and lack of security in MP use. The results show insufficient knowledge of healthcare professionals about Integrative and Complementary Practices policies and the medicinal uses of plants. The main users are women, elderly, with low income and education, either in Brazil or other countries. Regarding safety in MP use, frequently there is no correct identification of species, its origin, its preparation and the appropriate dose for each case. Finally, failure to approach these contents during training of healthcare professionals generates less knowledge, less research and more prejudice due to lack of information, impairing incentive and dissemination to the community.

https://doi.org/10.1590/1413-81232022272.46312020

O uso de plantas medicinais na atenção primária à saúde: revisão integrativa
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Patrício, Karina Pavão

; Minato, Arthur Cesar dos Santos

; Brolio, Ana Flavia

; Lopes, Marina Amorim

; Barros, Gabriela Ribeiro de

; Moraes, Vanessa

; Barbosa, Guilherme Correa

Ciência & Saúde Coletiva

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2022, Volume 27 N. 2 Pages 677 - 686

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

https://doi.org/10.1590/1413-81232022272.46312020

Differences in children and adolescents with SARS-CoV-2 infection: a cohort study in a Brazilian tertiary referral hospital
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Marques, Heloisa Helena de Sousa

; Pereira, Maria Fernanda Badue

; Santos, Angélica Carreira dos

; Fink, Thais Toledo

; Paula, Camila Sanson Yoshino de

; Litvinov, Nadia

; Schvartsman, Claudio

; Delgado, Artur Figueiredo

; Gibelli, Maria Augusta Bento Cicaroni

; Carvalho, Werther Brunow de

; Odone Filho, Vicente

; Tannuri, Uenis

; Carneiro-Sampaio, Magda

; Grisi, Sandra

; Duarte, Alberto José da Silva

; Antonangelo, Leila

; Francisco, Rossana Pucineli Vieira

; Okay, Thelma Suely

; Batisttella, Linamara Rizzo

; Carvalho, Carlos Roberto Ribeiro de

; Brentani, Alexandra Valéria Maria

; Silva, Clovis Artur

; Eisencraft, Adriana Pasmanik

; Rossi Junior, Alfio

; Fante, Alice Lima

; Cora, Aline Pivetta

; Reis, Amelia Gorete A. de Costa

; Ferrer, Ana Paula Scoleze

; Andrade, Anarella Penha Meirelles de

; Watanabe, Andreia

; Gonçalves, Angelina Maria Freire

; Waetge, Aurora Rosaria Pagliara

; Silva, Camila Altenfelder

; Ceneviva, Carina

; Lazari, Carolina dos Santos

; Abellan, Deipara Monteiro

; Santos, Emilly Henrique dos

; Sabino, Ester Cerdeira

; Bianchini, Fabíola Roberta Marim

; Alcantara, Flávio Ferraz de Paes

; Ramos, Gabriel Frizzo

; Leal, Gabriela Nunes

; Rodriguez, Isadora Souza

; Pinho, João Renato Rebello

; Carneiro, Jorge David Avaizoglou

; Paz, Jose Albino

; Ferreira, Juliana Carvalho

; Ferranti, Juliana Ferreira

; Ferreira, Juliana de Oliveira Achili

; Framil, Juliana Valéria de Souza

; Silva, Katia Regina da

; Kanunfre, Kelly Aparecida

; Bastos, Karina Lucio de Medeiros

; Galleti, Karine Vusberg

; Cristofani, Lilian Maria

; Suzuki, Lisa

; Campos, Lucia Maria Arruda

; Perondi, Maria Beatriz de Moliterno

; Diniz, Maria de Fatima Rodrigues

; Fonseca, Maria Fernanda Mota

; Cordon, Mariana Nutti de Almeida

; Pissolato, Mariana

; Peres, Marina Silva

; Garanito, Marlene Pereira

; Imamura, Marta

; Dorna, Mayra de Barros

; Luglio, Michele

; Rocha, Mussya Cisotto

; Aikawa, Nadia Emi

; Degaspare, Natalia Viu

; Sakita, Neusa Keico

; Udsen, Nicole Lee

; Scudeller, Paula Gobi

; Gaiolla, Paula Vieira de Vincenzi

; Severini, Rafael da Silva Giannasi

; Rodrigues, Regina Maria

; Toma, Ricardo Katsuya

; Paula, Ricardo Iunis Citrangulo de

; Palmeira, Patricia

; Forsait, Silvana

; Farhat, Sylvia Costa Lima

; Sakano, Tânia Miyuki Shimoda

; Koch, Vera Hermina Kalika

; Cobello Junior, Vilson

Clinics

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2021, Volume 76 elocation e3488

Abstract: En | Text: En | PDF: En

OBJECTIVES: To compare demographic/clinical/laboratory/treatments and outcomes among children and adolescents with laboratory-confirmed coronavirus disease 2019 (COVID-19). METHODS: This was a cross-sectional study that included patients diagnosed with pediatric COVID-19 (aged <18 years) between April 11, 2020 and April 22, 2021. During this period, 102/5,951 (1.7%) of all admissions occurred in neonates, children, and adolescents. Furthermore, 3,962 severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) detection samples were processed in patients aged <18 years, and laboratory-confirmed COVID-19 occurred in 155 (4%) inpatients and outpatients. Six/155 pediatric patients were excluded from the study. Therefore, the final group included 149 children and adolescents (n=97 inpatients and 52 outpatients) with positive SARS-CoV-2 results. RESULTS: The frequencies of sore throat, anosmia, dysgeusia, headache, myalgia, nausea, lymphopenia, pre-existing chronic conditions, immunosuppressive conditions, and autoimmune diseases were significantly reduced in children and adolescents (p<0.05). Likewise, the frequencies of enoxaparin use (p=0.037), current immunosuppressant use (p=0.008), vasoactive agents (p=0.045), arterial hypotension (p<0.001), and shock (p=0.024) were significantly lower in children than in adolescents. Logistic regression analysis showed that adolescents with laboratory-confirmed COVID-19 had increased odds ratios (ORs) for sore throat (OR 13.054; 95% confidence interval [CI] 2.750-61.977; p=0.001), nausea (OR 8.875; 95% CI 1.660-47.446; p=0.011), and lymphopenia (OR 3.575; 95% CI 1.355-9.430; p=0.010), but also had less hospitalizations (OR 0.355; 95% CI 0.138-0.916; p=0.032). The additional logistic regression analysis on patients with preexisting chronic conditions (n=108) showed that death as an outcome was significantly associated with pediatric severe acute respiratory syndrome (SARS) (OR 22.300; 95% CI 2.341-212.421; p=0.007) and multisystem inflammatory syndrome in children (MIS-C) (OR 11.261; 95% CI 1.189-106. 581; p=0.035). CONCLUSIONS: Half of the laboratory-confirmed COVID-19 cases occurred in adolescents. Individuals belonging to this age group had an acute systemic involvement of SARS-CoV-2 infection. Pediatric SARS and MIS-C were the most important factors associated with the mortality rate in pediatric chronic conditions with COVID-19.

https://doi.org/10.6061/clinics/2021/e3488

Epidemiological profile of patients with disabilities undergoing dental treatment under general anesthesia
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LIMA, Cyntia Paula Oliveira de Souza

; COUTO, Graziane Ribeiro

; BARROS, Alina Lúcia de Oliveira

; GUTIERREZ, Gabriela Mancia de

; SANTOS, Maria Teresa Botti Rodrigues

Revista de Odontologia da UNESP

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2021, Volume 50 elocation e20210012

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Introdução A anestesia geral é comumente utilizada no tratamento odontológico de pessoas com deficiência, ansiosos ou com difícil comportamento, que necessitem de tratamentos complexos e/ou extensos. Objetivo Avaliar o perfil epidemiológico da pessoa com deficiência submetida a tratamento odontológico sob anestesia geral pela equipe da Unidade de Odontologia para Pacientes com Necessidades Especiais da Universidade Federal de Sergipe. Material e método Através da análise de 371 prontuários de pacientes assistidos entre agosto de 2002 e março de 2019. Resultado Observou-se que 56,1% dos pacientes eram do sexo masculino, que a faixa etária mais prevalente foi de 11-20 anos de idade e que as condições médicas mais frequentes foram a deficiência intelectual, seguida pelas múltiplas deficiências. Quanto aos procedimentos odontológicos, observou-se que em 94,1% dos pacientes foram realizadas 4.056 extrações dentárias e em 52,3% dos pacientes 1.156 restaurações. Em 30,2% dos pacientes foram realizadas extrações múltiplas totais. O exame radiográfico foi realizado em 51,8% dos pacientes. Em relação a procedência dos pacientes, 58,8% eram provenientes de outros municípios do estado, distinto da capital. Os retornos ao serviço para acompanhamento e prevenção foi observado em 38,5% dos pacientes. Conclusão Há uma grande necessidade de intervenção precoce da odontologia, com ações preventivas específicas para esse grupo de pacientes, com enfoque no interior do estado de Sergipe.

Abstract Introduction General anesthesia is commonly used in the dental treatment of people with disabilities, anxious or difficult behavior, who need complex and/or extensive treatments. Objective The aim of this study was to evaluate the epidemiological profile of patients with disabilities undergoing dental treatment under general anesthesia by the team of the Dental Unit for Patients with Special Needs of the Federal University of Sergipe. Material and method Through the analysis of 371 dental records of patients assisted between August 2002 and March 2019. Result The analysis showed that 56.1% of patients were male, the most prevalent age group was 11-20 years, and the most frequent medical conditions were intellectual disability, followed by multiple disabilities. Relative to dental procedures, in 94.1% of the patients, it was observed that 4,056 dental extractions were performed and in 52.3% of patients, 1,156 restorations were performed. In 30.2% of patients, total multiple extractions were performed. Radiographic examination was performed in 51.8% of patients. As regards the origin of patients, 58.8% were from municipalities in the state, other than the capital. Return to the service for follow-up and prevention was observed in 38.5% of patients. Conclusion There is great need for early dental intervention, with specific preventive actions for this group of patients, focusing on those from interior regions of the state.

https://doi.org/10.1590/1807-2577.01221 26 downloads

Eruption cyst in a patient with microcephaly: a case report
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Couto, Graziane Ribeiro

; Lima, Cyntia Paula Oliveira de Souza

; Moura, Ana Paula Gomes e

; Amaral, Regiane Cristina do

; Gutierrez, Gabriela Mancia de

; Barros, Alina Lúcia de Oliveira

Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial

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dec 2020, Volume 61 N. 4 Pages 187 - 191

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O objetivo deste artigo é relatar o caso clínico de um menino de 3 anos e 7 meses de idade com microcefalia com múltiplos cistos de erupção e discutir as condutas adotadas. Baseadas nos aspetos clínicos e radiográficos, o diagnóstico foi de cisto de erupção. Para o tratamento optou-se pela incisão cirúrgica dos cistos de erupção, sob anestesia geral, mas por motivos de saúde o paciente não pode realizar o procedimento proposto e, após 4 meses, sete dos oito cistos de erupção tinham desaparecidos com a irrupção dos molares decíduos, sem necessidade de intervenção cirúrgica. No que diz respeito ao cisto de erupção remanescente a terapêutica eleita foi o acompanhamento e descompressão manual realizada pela mãe. É possível individualizar o tratamento do cisto de erupção optando-se pelo acompanhamento da lesão com o desaparecimento espontâneo da mesma, sem qualquer tipo de intervenção.

Abstract The aim of this paper is to report the clinical case of a 3-year and 7-month-old male child with microcephaly who had multiple eruption cysts, and to discuss the adopted procedures. The diagnosis of eruption cyst was concluded based on the clinical and radiographic characteristics. The treatment proposed was a surgical incision of the eruption cysts with the patient under general anesthesia. However, due to health reasons, the patient could not have the procedure performed, and, after four months, seven of the eight eruption cysts had regressed with teeth eruption; therefore, no surgical intervention was needed. Regarding the remaining eruption cyst, the therapy adopted was his mother monitoring the condition. It is possible to personalize eruption cyst treatment by monitoring the lesion until its eventual spontaneous disappearance, without any type of intervention.

https://doi.org/10.24873/j.rpemd.2020.12.815 35 downloads

The genetic structure of Pristimantis latro. (Anura: Craugastoridae) mirrors traits of their life history
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Santana-Cornélio, Gilcilene

; Araújo-de-Oliveira, Elciomar

; Magalhães-Xavier, Keila

; Barros-da-Silva, Gabriela Wemilly

; França, Isadora

; Ribeiro Rodrigues, Luis Reginaldo

; Hernández-Ruz, Emil José

Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales

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sep 2020, Volume 44 N. 172 Pages 729 - 739

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Una de las principales hipótesis para explicar el origen de la diversidad amazónica invoca el efecto de barrera de los ríos para explicar los patrones de diversidad. Esa hipótesis propone que algunos ríos pueden separar poblaciones continuas conduciendo a la diferenciación y la especiación. En ese sentido nos propusimos estudiar la estructura genética de Pristimantis latro, una especie recién descrita que habita una región bajo fuerte presión antrópica producto de la ganadería expansiva, la minería ilegal y la construcción de represas hidroeléctricas. El ADN se extrajo de 52 individuos de P. latro y se amplificó mediante reacción en cadena de la polimerasa (PCR) usando los marcadores mitocondriales 16S rRNA y COI. Para inferir el tiempo de divergencia entre las localidades de P. latro, construimos un árbol de especies e hicimos análisis de varianza molecular (AMOVA) para inferir la diferenciación genética entre y dentro de las poblaciones de P. latro. Encontramos que P. latro presenta una estructuración genética en las poblaciones de las márgenes derecha e izquierda del río Xingu y dentro de las regiones interfluviales deTapajós-Xingu y Xingu-Tocantins. Asimismo, el tiempo de divergencia entre las poblaciones de las márgenes derecha e izquierda del río Xingu aconteció hace aproximadamente 380.000 años. El patrón de estructura genética que se encontró se corresponde con el indicado en artículos recientes para el género Pristimantis, el cual revela que las especies sin renacuajos exhiben una estructura genética que responde a la hipótesis de los ríos como barreras.

Abstract One of the main hypotheses to explain the origin of Amazonian diversity is the barrier effect of the rivers known as the riverine-barrier hypothesis, which suggests that riverine barriers isolated once continuous populations leading to differentiation and speciation. In this context, we studied the genetic structure of Pristimantis latro, a newly described species that inhabits a region under marked anthropic pressure due to expansive livestock, illegal mining, and hydroelectric dam construction. The DNA was extracted from 52 P. latro individuals and then amplified via polymerase chain reaction (PCR) using the mitochondrial 16S rRNA and COI markers. To infer the time of divergence between the P. latro localities, we built a species tree and performed an analysis of molecular variance (AMOVA) to infer the genetic differentiation between and within the P. latro populations. We found that P. latro has a marked genetic structure in the populations of the right and left margins of the Xingu River and within the Tapajós-Xingu and Xingu-Tocantins interfluvial regions and that the time of divergence between the populations of the East and West banks of the Xingu River occurred approximately 380,000 years ago. This pattern of genetic structure corresponds to that reported in recent articles for the Pristimantis genus evidencing that species without tadpoles exhibit a genetic structure explained by the hypothesis of rivers as barriers.

https://doi.org/10.18257/raccefyn.956 41 downloads

Gestation and breastfeeding in schistosomotic mice differentially alters the expression of histone deacetylases (HDACs) in adult offspring
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Holanda, Gabriela Calixto Ribeiro de

; Souto, Fabrício Oliveira

; Silva, Maria da Conceição

; Lorena, Virgínia Maria Barros de

; Costa, Vlaudia Maria Assis

; Albuquerque, Monica Camelo Pessôa de Azevedo

; Souza, Valdênia Maria Oliveira de

; Lima Filho, José Luiz de

Memórias do Instituto Oswaldo Cruz

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2019, Volume 114 elocation e190366

Abstract: En | Text: En | PDF: En

BACKGROUND Breastfeeding or gestation in schistosomotic mothers can cause long-term alterations in the immune response of offspring. OBJECTIVES Evaluate the expression of histone deacetylases (HDACs) (all classes), the production of cytokines by T and B lymphocytes and macrophages, and the frequency of CD4+CD25+FoxP3+-cells in adult offspring born and/or suckled by schistosomotic mothers. METHODS We harvested splenocytes from offspring born to (BIM), suckled by (SIM), or born to/suckled by (BSIM) schistosomotic mothers and animals from noninfected mothers (Control) at seven-weeks old and cultured them with/without Concanavalin A. HDAC expression was evaluated by real-time quantitative polymerase chain reaction (qPCR), and cytokines and membrane markers were evaluated by fluorescence-activated cell sorting (FACS). FINDINGS Compared to Control, BIM mice showed increased expression of HDAC9 and frequency of CD4+IL-10+-cells. The SIM group had increased expression of HDAC1, HDAC2, HDAC6, HDAC7, HDAC10, Sirt2, Sirt5, Sirt6, and Sirt7. The BSIM group only had increased HDAC10 expression. The SIM and BSIM groups exhibited decreased frequencies of CD4+IL-4+-cells and CD4+CD25+FoxP3+-cells, along with a higher frequency of CD14+IL-10+-cells and an increase in CD45R/B220+IL-10+-cells. The BSIM group also showed a high frequency of CD4+IL10+-cells. MAIN CONCLUSIONS Breastfeeding induced the expression of HDACs from various classes involved in reducing inflammatory responses. However, gestation enhanced the expression of a single HDAC and breastfeeding or gestation appears to favour multiple IL-10-dependent pathways, but not cells with a regulatory phenotype.

https://doi.org/10.1590/0074-02760190366 645 downloads

10.

In situ effect of CPP-ACP chewing gum upon erosive enamel loss
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ALENCAR, Catarina Ribeiro Barros de

; OLIVEIRA, Gabriela Cristina de

; MAGALHÃES, Ana Carolina

; BUZALAF, Marília Afonso Rabelo

; MACHADO, Maria Aparecida de Andrade Moreira

; HONÓRIO, Heitor Marques

; RIOS, Daniela

Journal of Applied Oral Science

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jun 2017, Volume 25 N. 3 Pages 258 - 264

Abstract: En | Text: En | PDF: En

Abstract Casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) is able to increase salivary calcium and phosphate levels at an acidic pH. Previous studies demonstrated that a CPP-ACP chewing gum was able to enhance the re-hardening of erosion lesions, but could not diminish enamel hardness loss. Therefore, there is no consensus regarding the effectiveness of CPP-ACP on dental erosion. Objective This in situ study investigated the ability of a CPP-ACP chewing gum in preventing erosive enamel loss. Material and Methods: During three experimental crossover phases (one phase per group) of seven days each, eight volunteers wore palatal devices with human enamel blocks. The groups were: GI – Sugar free chewing gum with CPP-ACP; GII – Conventional sugar free chewing gum; and GIII – No chewing gum (control). Erosive challenge was extraorally performed by immersion of the enamel blocks in cola drink (5 min, 4x/day). After each challenge, in groups CPP and No CPP, volunteers chewed one unit of the corresponding chewing gum for 30 minutes. Quantitative analysis of enamel loss was performed by profilometry (µm). Data were analyzed by Repeated-Measures ANOVA and Tukey’s test (p<0.05). Results The use of chewing gum (CPP and No CPP) resulted in lower erosive enamel loss compared with the control group (p<0.05). CPP-ACP chewing gum (CPP) did not improve the protection against erosive enamel loss compared with conventional chewing gum (No CPP) (p>0.05). Conclusion The CPP-ACP chewing gum was not able to enhance the anti-erosive effect of conventional chewing gum against enamel loss.

https://doi.org/10.1590/1678-7757-2016-0304 1499 downloads

11.

Effect of different salivary exposure times on the rehardening of acid-softened enamel
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ALENCAR, Catarina Ribeiro Barros de

; MENDONÇA, Fernanda Lyrio

; GUERRINI, Luísa Belluco

; JORDÃO, Maisa Camillo

; OLIVEIRA, Gabriela Cristina de

; HONÓRIO, Heitor Marques

; MAGALHÃES, Ana Carolina

; RIOS, Daniela

Brazilian Oral Research

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2016, Volume 30 N. 1 elocation e104

Abstract: En | Text: En | PDF: En

Abstract This in situ study assessed the effect of different times of salivary exposure on the rehardening of acid-softened enamel. Bovine enamel blocks were subjected in vitro to a short-term acidic exposure by immersion in 0.05 M (pH 2.5) citric acid for 30 s, resulting in surface softening. Then, 40 selected eroded enamel blocks were randomly assigned to 10 volunteers. Intraoral palatal appliances containing 4 enamel blocks were constructed for each volunteer, who wore the appliance for 12 nonconsecutive hours: initial 30 min, followed by an additional 30, and then by an additional 1 hour. For the last additional 10 hours the appliances were used at night, during the volunteers’ sleep. Surface hardness was analyzed in the same blocks at baseline, after erosion and after each period of salivary exposure, enabling percentage of surface hardness recovery calculation (%SHR). The data were tested using repeated measures ANOVA and Tukey’s test (α = 0.05). Increasing periods of salivary action promoted a progressive increase in the surface hardness (p < 0.001). However a similar degree of enamel rehardening (p = 0.641) was observed between 2 hours (49.9%) and 12 hours (53.3%) of salivary exposure. Two hours of salivary exposure seems to be appropriate for partial rehardening of the softened enamel surface. The use of the intraoral appliance during sleep did not improve the enamel rehardening after erosion.

https://doi.org/10.1590/1807-3107BOR-2016.vol30.0104 1548 downloads

12.

Eficiência do uso de nitrogênio em genótipos de arroz de terras altas
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Fidelis, Rodrigo Ribeiro

; Rodrigues, Adelmo Martins

; Silva, Gabriela Figueiredo

; Barros, Hélio Bandeira

; Pinto, Leandro Cardoso

; Aguiar, Raimundo Wagner Souza

Pesquisa Agropecuária Tropical

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mar 2012, Volume 42 N. 1 Pages 124 - 128

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

A planta de arroz caracteriza-se por apresentar alta demanda por nutrientes, sendo o nitrogênio o principal fator limitante à sua produtividade. Objetivou-se, com este trabalho, verificar a existência de diferenças entre variedades locais e melhoradas de arroz, quanto à eficiência do uso de nitrogênio, em solo de Cerrado, no município de Gurupi (TO). Os tratamentos envolveram sete cultivares de arroz (BRS-Caiapó, BRS-Bonança, Epagri-114, BRS-Sertaneja, BRS-Primavera, BRSMG-Conai e BRSMG-Curinga), cultivadas em dois ambientes distintos. Para simular ambientes com baixo e alto nível de nitrogênio, foram utilizados 20 kg ha-1 e 120 kg ha-1 de N, respectivamente. O delineamento experimental utilizado foi o de blocos casualizados, com quatro repetições. Os caracteres avaliados foram produtividade de grãos, dias para florescimento, dias para maturação, acamamento, altura de plantas e massa de cem grãos. Concluiu-se que o ambiente com alto teor de nitrogênio promoveu maiores alturas de planta, que o ambiente com menor nível de nitrogênio retardou o florescimento das cultivares e que a cultivar BRSMG-Curinga foi a única que respondeu ao acréscimo de adubação, com aumento significativo na produtividade de grãos.

Rice plants present a high demand for nutrients, being nitrogen the main limiting factor to their yield. The objective of this study was to verify the existence of differences among local and improved rice genotypes, concerning the nitrogen efficiency use, in a Brazilian Savannah soil, in Gurupi, Tocantins State, Brazil. Seven rice cultivars (BRS-Caiapó, BRS-Bonança, Epagri-114, BRS-Sertaneja, BRS-Primavera, BRSMG-Conai, and BRSMG-Curinga) were cultivated in two distinct environments. In order to simulate environments with high and low nitrogen contents, 20 kg ha-1 and 120 kg ha-1 of N were respectively applied. The experiments were carried out in a completely randomized blocks design, with four replications. The features evaluated were grain yield, days for flowering and ripening, lodging, plants height, and 100 grains weight. It was possible to conclude that the environment with high nitrogen content was responsible for the highest plants height, the environment with low nitrogen content delayed the cultivars flowering stage, and the BRSMG-Curinga cultivar was the only one that reacted to the fertilization increase, with a significant increase in grains yield.

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