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SUMMARY Thyroglobulin (Tg) levels are important to predict recurrence in differentiated thyroid cancer patients. However, false-positive results can hence the request of unnecessary tests and treatments. We reported two cases of interference in thyroglobulin measurement and the workup to investigate them. Both patients achieved an excellent response to therapy after total thyroidectomy and one patient had also received radioiodine treatment. During the follow-up, Tg levels increased and there was no evidence of recurrent disease in the imaging studies. The Tg levels by the Access platform were positive but the results by Elecsys platform and LC-MS/MS were undetectable, leading to the hypothesis of heterophile antibodies (HAbs) interference. The possibility of HAbs interference must be considered when the Tg levels do not fit in the clinical picture. The measurement of Tg by another immunoassay or by LC-MS/MS may be useful in these situations. (Tg However falsepositive false treatments them treatment followup, followup follow up, up follow-up studies LCMS/MS LCMSMS LC MS/MS MS undetectable (HAbs picture situations LCMS MSMS

https://doi.org/10.20945/2359-4292-2023-0115

The profile of patients with postpartum hemorrhage admitted to the obstetric intensive care: a cross-sectional study care crosssectional cross sectional
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Silva, Mayara dos Santos Farias Ferreira

; Amorim, Melania Maria Ramos de

; Melo, Brena

; Lanza, André Vieira

; Ramos, Maria Eduarda Trigueiro

; Carvalho, Bruna Antunes Durães de

; Tenório, Natalia Nunes

; Katz, Leila

Revista Brasileira de Ginecologia e Obstetrícia

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2024, Volume 46 elocation e-rbgo47

Abstract: En | Text: En | PDF: En

Abstract Objective In Brazil, postpartum hemorrhage (PPH) is a major cause of maternal morbidity and mortality. Data on the profile of women and risk factors associated with PPH are sparse. This study aimed to describe the profile and management of patients with PPH, and the association of risk factors for PPH with severe maternal outcomes (SMO). Methods A cross-sectional study was conducted in Instituto de Medicina Integral Prof. Fernando Figueira (IMIP) obstetric intensive care unit (ICU) between January 2012 and March 2020, including patients who gave birth at the hospital and that were admitted with PPH to the ICU. Results The study included 358 patients, of whom 245 (68.4%) delivered in the IMIP maternity, and 113 (31.6%) in other maternity. The mean age of the patients was 26.7 years, with up to eight years of education (46.1%) and a mean of six prenatal care. Uterine atony (72.9%) was the most common cause, 1.6% estimated blood loss, 2% calculated shock index (SI), 63.9% of patients received hemotransfusion, and 27% underwent hysterectomy. 136 cases of SMO were identified, 35.5% were classified as maternal near miss and 3.0% maternal deaths. Multiparity was associated with SMO as an antepartum risk factor (RR=1.83, 95% CI1.42-2.36). Regarding intrapartum risk factors, abruptio placentae abruption was associated with SMO (RR=2.2 95% CI1.75-2.81). Among those who had hypertension (49.6%) there was a lower risk of developing SMO. Conclusion The principal factors associated with poor maternal outcome were being multiparous and placental abruption. Brazil (PPH mortality sparse . (SMO) crosssectional cross sectional Prof (IMIP ICU (ICU 201 2020 35 24 68.4% 684 68 4 (68.4% maternity 11 31.6% 316 31 6 (31.6% 267 26 7 26. 46.1% 461 46 1 (46.1% 72.9% 729 72 9 (72.9% 16 1.6 loss 2 SI, SI , (SI) 639 63 63.9 hemotransfusion 27 hysterectomy 13 identified 355 5 35.5 30 3 0 3.0 deaths RR=1.83, RR183 RR 83 (RR=1.83 95 CI1.422.36. CI142236 CI CI1.42 2.36 CI1 42 36 CI1.42-2.36) RR=2.2 RR22 (RR=2. CI1.752.81. CI175281 CI1.75 2.81 75 81 CI1.75-2.81) 49.6% 496 49 (49.6% (SMO 20 202 68.4 (68.4 31.6 (31.6 46.1 (46.1 72.9 (72.9 1. (SI 63. 35. 3. RR=1.83 RR18 8 (RR=1.8 422 CI1.422.36 CI14223 CI142 CI1.4 236 2.3 CI1.42-2.36 RR=2. RR2 (RR=2 752 CI1.752.81 CI17528 CI175 CI1.7 281 2.8 CI1.75-2.81 49.6 (49.6 68. (68. 31. (31. 46. (46. 72. (72. RR=1.8 RR1 (RR=1. CI1.422.3 CI1422 CI14 CI1. 23 2. CI1.42-2.3 RR=2 (RR= CI1.752.8 CI1752 CI17 28 CI1.75-2.8 49. (49. (68 (31 (46 (72 RR=1. (RR=1 CI1.422. CI1.42-2. RR= (RR CI1.752. CI1.75-2. (49 (6 (3 (4 (7 RR=1 CI1.422 CI1.42-2 CI1.752 CI1.75-2 ( CI1.42- CI1.75-

https://doi.org/10.61622/rbgo/2024rbgo47

IMPACTO-MR: um estudo brasileiro de plataforma nacional para avaliar infecções e multirresistência em unidades de terapia intensiva IMPACTOMR IMPACTO MR IMPACTO-MR
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Tomazini, Bruno M

; Nassar Jr, Antonio Paulo

; Lisboa, Thiago Costa

; Azevedo, Luciano César Pontes de

; Veiga, Viviane Cordeiro

; Catarino, Daniela Ghidetti Mangas

; Fogazzi, Debora Vacaro

; Arns, Beatriz

; Piastrelli, Filipe Teixeira

; Dietrich, Camila

; Negrelli, Karina Leal

; Jesuíno, Isabella de Andrade

; Reis, Luiz Fernando Lima

; Mattos, Renata Rodrigues de

; Pinheiro, Carla Cristina Gomes

; Luz, Mariane Nascimento

; Spadoni, Clayse Carla da Silva

; Moro, Elisângela Emilene

; Bueno, Flávia Regina

; Sampaio, Camila Santana Justo Cintra

; Silva, Débora Patrício

; Baldassare, Franca Pellison

; Silva, Ana Cecilia Alcantara

; Veiga, Thabata

; Barbante, Leticia

; Lambauer, Marianne

; Campos, Viviane Bezerra

; Santos, Elton

; Santos, Renato Hideo Nakawaga

; Laranjeiras, Ligia Nasi

; Valeis, Nanci

; Santucci, Eliana

; Miranda, Tamiris Abait

; Patrocínio, Ana Cristina Lagoeiro do

; Carvalho, Andréa de

; Sousa, Eduvirgens Maria Couto de

; Sousa, Ancelmo Honorato Ferraz de

; Malheiro, Daniel Tavares

; Bezerra, Isabella Lott

; Rodrigues, Mirian Batista

; Malicia, Julliana Chicuta

; Silva, Sabrina Souza da

; Gimenes, Bruna dos Passos

; Sesin, Guilhermo Prates

; Zavascki, Alexandre Prehn

; Sganzerla, Daniel

; Medeiros, Gregory Saraiva

; Santos, Rosa da Rosa Minho dos

; Silva, Fernanda Kelly Romeiro

; Cheno, Maysa Yukari

; Abrahão, Carolinne Ferreira

; Oliveira Junior, Haliton Alves de

; Rocha, Leonardo Lima

; Nunes Neto, Pedro Aniceto

; Pereira, Valéria Chagas

; Paciência, Luis Eduardo Miranda

; Bueno, Elaine Silva

; Caser, Eliana Bernadete

; Ribeiro, Larissa Zuqui

; Fernandes, Caio Cesar Ferreira

; Garcia, Juliana Mazzei

; Silva, Vanildes de Fátima Fernandes

; Santos, Alisson Junior dos

; Machado, Flávia Ribeiro

; Souza, Maria Aparecida de

; Ferronato, Bianca Ramos

; Urbano, Hugo Corrêa de Andrade

; Moreira, Danielle Conceição Aparecida

; Souza-Dantas, Vicente Cés de

; Duarte, Diego Meireles

; Coelho, Juliana

; Figueiredo, Rodrigo Cruvinel

; Foreque, Fernanda

; Romano, Thiago Gomes

; Cubos, Daniel

; Spirale, Vladimir Miguel

; Nogueira, Roberta Schiavon

; Maia, Israel Silva

; Zandonai, Cassio Luis

; Lovato, Wilson José

; Cerantola, Rodrigo Barbosa

; Toledo, Tatiana Gozzi Pancev

; Tomba, Pablo Oscar

; Almeida, Joyce Ramos de

; Sanches, Luciana Coelho

; Pierini, Leticia

; Cunha, Mariana

; Sousa, Michelle Tereza

; Azevedo, Bruna

; Dal-Pizzol, Felipe

; Damasio, Danusa de Castro

; Bainy, Marina Peres

; Beduhn, Dagoberta Alves Vieira

; Jatobá, Joana D’Arc Vila Nova

; Moura, Maria Tereza Farias de

; Rego, Leila Rezegue de Moraes

; Silva, Adria Vanessa da

; Oliveira, Luana Pontes

; Sodré Filho, Eliene Sá

; Santos, Silvana Soares dos

; Neves, Itallo de Lima

; Leão, Vanessa Cristina de Aquino

; Paes, João Lucidio Lobato

; Silva, Marielle Cristina Mendes

; Oliveira, Cláudio Dornas de

; Santiago, Raquel Caldeira Brant

; Paranhos, Jorge Luiz da Rocha

; Wiermann, Iany Grinezia da Silva

; Pedroso, Durval Ferreira Fonseca

; Sawada, Priscilla Yoshiko

; Prestes, Rejane Martins

; Nascimento, Glícia Cardoso

; Grion, Cintia Magalhães Carvalho

; Carrilho, Claudia Maria Dantas de Maio

; Dantas, Roberta Lacerda Almeida de Miranda

; Silva, Eliane Pereira

; Silva, Antônio Carlos da

; Oliveira, Sheila Mara Bezerra de

; Golin, Nicole Alberti

; Tregnago, Rogerio

; Lima, Valéria Paes

; Silva, Kamilla Grasielle Nunes da

; Boschi, Emerson

; Buffon, Viviane

; Machado, André Sant’Ana

; Capeletti, Leticia

; Foernges, Rafael Botelho

; Carvalho, Andréia Schubert de

; Oliveira Junior, Lúcio Couto de

; Oliveira, Daniela Cunha de

; Silva, Everton Macêdo

; Ribeiro, Julival

; Pereira, Francielle Constantino

; Salgado, Fernanda Borges

; Deutschendorf, Caroline

; Silva, Cristofer Farias da

; Gobatto, Andre Luiz Nunes

; Oliveira, Carolaine Bomfim de

; Dracoulakis, Marianna Deway Andrade

; Alvaia, Natália Oliveira Santos

; Souza, Roberta Machado de

; Araújo, Larissa Liz Cardoso de

; Melo, Rodrigo Morel Vieira de

; Passos, Luiz Carlos Santana

; Vidal, Claudia Fernanda de Lacerda

; Rodrigues, Fernanda Lopes de Albuquerque

; Kurtz, Pedro

; Shinotsuka, Cássia Righy

; Tavares, Maria Brandão

; Santana, Igor das Virgens

; Gavinho, Luciana Macedo da Silva

; Nascimento, Alaís Brito

; Pereira, Adriano J

; Cavalcanti, Alexandre Biasi

Revista Brasileira de Terapia Intensiva

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dec 2022, Volume 34 N. 4 Pages 418 - 425

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

RESUMO Objetivo: Descrever o IMPACTO-MR, um estudo brasileiro de plataforma nacional em unidades de terapia intensiva focado no impacto das infecções por bactérias multirresistentes relacionadas à assistência à saúde. Métodos: Descrevemos a plataforma IMPACTO-MR, seu desenvolvimento, critérios para seleção das unidades de terapia intensiva, caracterização da coleta de dados, objetivos e projetos de pesquisa futuros a serem realizados na plataforma. Resultados: Os dados principais foram coletados por meio do Epimed Monitor System® e consistiram em dados demográficos, dados de comorbidades, estado funcional, escores clínicos, diagnóstico de internação e diagnósticos secundários, dados laboratoriais, clínicos e microbiológicos e suporte de órgãos durante a internação na unidade de terapia intensiva, entre outros. De outubro de 2019 a dezembro de 2020, 33.983 pacientes de 51 unidades de terapia intensiva foram incluídos no banco de dados principal. Conclusão: A plataforma IMPACTO-MR é um banco de dados clínico brasileiro de unidades de terapia intensiva focado na pesquisa do impacto das infecções por bactérias multirresistentes relacionadas à assistência à saúde. Essa plataforma fornece dados para o desenvolvimento e pesquisa de unidades de terapia intensiva individuais e ensaios clínicos observacionais e prospectivos multicêntricos. Objetivo IMPACTOMR, IMPACTOMR IMPACTO MR, MR saúde Métodos Resultados System demográficos comorbidades funcional secundários laboratoriais outros 201 2020 33983 33 983 33.98 5 principal Conclusão multicêntricos 20 202 3398 3 98 33.9 2 339 9 33.

ABSTRACT Objective: To describe the IMPACTO-MR, a Brazilian nationwide intensive care unit platform study focused on the impact of health care-associated infections due to multidrug-resistant bacteria. Methods: We described the IMPACTO-MR platform, its development, criteria for intensive care unit selection, characterization of core data collection, objectives, and future research projects to be held within the platform. Results: The core data were collected using the Epimed Monitor System® and consisted of demographic data, comorbidity data, functional status, clinical scores, admission diagnosis and secondary diagnoses, laboratory, clinical, and microbiological data, and organ support during intensive care unit stay, among others. From October 2019 to December 2020, 33,983 patients from 51 intensive care units were included in the core database. Conclusion: The IMPACTO-MR platform is a nationwide Brazilian intensive care unit clinical database focused on researching the impact of health care-associated infections due to multidrug-resistant bacteria. This platform provides data for individual intensive care unit development and research and multicenter observational and prospective trials. Objective IMPACTOMR, IMPACTOMR IMPACTO MR, MR careassociated associated multidrugresistant multidrug resistant bacteria Methods selection collection objectives Results System status scores diagnoses laboratory stay others 201 2020 33983 33 983 33,98 5 Conclusion trials 20 202 3398 3 98 33,9 2 339 9 33,

https://doi.org/10.5935/0103-507x.20220209-pt

Risk factors for recurrent wheezing in preterm infants who received prophylaxis with palivizumab
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Manini, Mariana Bueno

; Matsunaga, Natasha Yumi

; Gianfrancesco, Lívea

; Oliveira, Marina Simões

; Carvalho, Maria Rosa Vieira de

; Ribeiro, Gisleine Leila Martins Tengler

; Morais, Eliane de Oliveira

; Ribeiro, Maria Angela Gonçalves O.

; Morcillo, André Moreno

; Ribeiro, José Dirceu

; Toro, Adyléia Aparecida Dalbo Contrera

Jornal Brasileiro de Pneumologia

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2021, Volume 47 N. 5 elocation e20210157

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

RESUMO Objetivo: Determinar a prevalência de sibilância recorrente (SR) em crianças pré-termo que receberam profilaxia contra infecção grave pelo vírus sincicial respiratório (VSR) e identificar susceptibilidade genética (atopia ou asma) e fatores de risco para SR. Métodos: Estudo transversal envolvendo crianças pré-termo que receberam profilaxia com palivizumabe em um centro de referência no Brasil durante os primeiros dois anos de vida. Um questionário estruturado foi aplicado em entrevista presencial com os pais ou responsáveis. Resultados: O estudo incluiu 410 crianças pré-termo (mediana de idade = 9 meses [0-24 meses]). Na amostra total, 111 crianças (27,1%; IC95%: 22,9-31,5) apresentavam SR. A análise univariada entre os grupos com e sem SR não mostrou diferenças em relação às seguintes variáveis: sexo, etnia, escolaridade materna, idade gestacional, peso ao nascer, aleitamento materno, número de crianças no domicílio, frequência em creche, presença de animais de estimação no domicílio e cuidador tabagista. A prevalência de SR foi duas vezes maior entre crianças com displasia broncopulmonar (OR ajustada = 2,08; IC95%: 1,11-3,89; p = 0,022) e quase cinco vezes maior entre aquelas com história pessoal/familiar de atopia (OR ajustada = 4,96; IC95%: 2,62-9,39; p < 0,001) do que entre aquelas sem essas condições. Conclusões: Crianças pré-termo que receberam profilaxia com palivizumabe, mas apresentam história pessoal/familiar de atopia ou displasia broncopulmonar, têm maior probabilidade de apresentar SR do que aquelas sem essas condições.

ABSTRACT Objective: To determine the prevalence of recurrent wheezing (RW) in preterm infants who received prophylaxis against severe infection with respiratory syncytial virus (RSV) and to identify genetic susceptibility (atopy or asthma) and risk factors for RW. Methods: This was a cross-sectional study involving preterm infants who received prophylaxis with palivizumab at a referral center in Brazil during the first two years of age. A structured questionnaire was administered in a face-to-face interview with parents or legal guardians. Results: The study included 410 preterm infants (median age = 9 months [0-24 months]). In the sample as a whole, 111 children (27.1%; [95% CI, 22.9-31.5]) had RW. The univariate analysis between the groups with and without RW showed no differences regarding the following variables: sex, ethnicity, maternal level of education, gestational age, birth weight, breastfeeding, number of children in the household, day care center attendance, pets in the household, and smoking caregiver. The prevalence of RW was twice as high among children with bronchopulmonary dysplasia (adjusted OR = 2.08; 95% CI, 1.11-3.89; p = 0.022) and almost five times as high among those with a personal/family history of atopy (adjusted OR = 4.96; 95% CI, 2.62-9.39; p < 0.001) as among those without these conditions. Conclusions: Preterm infants who received prophylaxis with palivizumab but have a personal/family history of atopy or bronchopulmonary dysplasia are more likely to have RW than do those without these conditions.

https://doi.org/10.36416/1806-3756/e20210157 158 downloads

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

Zn treatment effects on biological potential of fennel bulbs as affected by in vitro digestion process
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MAJDOUB, Nesrine

; KAAB, Leila Bettaieb Ben

; VIEIRA, Ana Isabel

; FALEIRO, Maria Leonor

; EL-GUENDOUZ, Soukaina

; MIGUEL, Maria Graça

Food Science and Technology

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jun 2020, Volume 40 Pages 60 - 67

Abstract: En | Text: En | PDF: En

Abstract Zn treatment effects on the stability of polyphenols, MDA (malondialdehyde) content, antioxidant and lipoxygenase inhibition activities of two varieties of fennel bulbs were studied by using an in vitro gastrointestinal digestion model. Likewise, the effect of Zn on viability cells of E. coli was also performed. The results revealed that high amounts of total phenolic and flavonoid compounds were released during the digestion process, especially after the intestinal phase. Additionally, the antioxidant and lipoxygenase inhibitory activity were affected by the gastrointestinal digestion process and seems to be correlated with total phenol contents. On the other hand, the viability of E. coli was not affected by the activity of our tested bulbs during passage through the artificial digestion model, but the treated bulbs activity contribute relatively to the inhibition growth of bacteria. The survival of E. coli in fennel bulbs was challenged with simulated gastrointestinal fluids and the results showed that the E. coli strains, despite having experienced a viability reduction at the intestinal phase, were able to overcome the exposure to the gastrointestinal synthetic fluids. This E. coli ability reinforces the need for good hygienic measures to assure safe fresh produce, even for those that are rich in antibacterial compounds.

https://doi.org/10.1590/fst.34918 742 downloads

Investigation of wound healing activity of Lafoensia pacari (Lythraceae) leaves extract cultivated in Goiás state, Brazil
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Chaibub, Beatriz Abdallah

; Parente, Leila Maria Leal

; Lino Jr, Ruy de Souza

; Cirilo, Herica Nubia Cardoso

; Garcia, Sandra Alves de Sousa

; Nogueira, João Carlos Mohn

; Conceição, Edemilson Cardodo da

; Thomaz, Douglas Vieira

; Santos, Suzana da Costa

; Bara, Maria Teresa Freitas

Rodriguésia

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2020, Volume 71 elocation e00992019

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

Resumo Lafoensia pacari é empregada na medicina tradicional no cerrado Brasileiro para tratar feridas. É importante desenvolver estudos para melhor compreender como ocorre a atividade biológica de L. pacari . O objetivo deste estudo foi avaliar a atividade cicatrizante do extrato das folhas de L. pacari em modelo animal. O extrato vegetal foi preparado a partir de plantas oriundas de Goiânia-GO, Brasil. Na avaliação da atividade cicatrizante, foi empregado o modelo de feridas cutâneas em ratos. Análise macroscópica, morfométrica e histológica das feridas também foram realizadas. Na cromatografia de camada delgada foi detectada a presença de taninos hidrolisáveis e na cromatografia líquida de alta eficiência, pôde-se sugerir a presença de elagitaninos. Na avaliação das feridas cutâneas em ratos foi possível observar que o tratamento com extrato de L. pacari a 10% (m/v) proporcionou uma redução no tempo de cicatrização de feridas cutâneas em ratos, com aumento significativo das variáveis envolvidas na cicatrização, como número de vasos sanguíneos e a produção de colágeno. Portanto, este estudo mostra que o potencial cicatrizante de L. pacari pode estar relacionado à presença de elagitaninos, o que corrobora com relatos etnofarmacológicos deste vegetal.

Abstract Lafoensia pacari has been used in traditional folk medicine in Brazilian Cerrado to treat wounds. It is important to develop studies that can clarify how the biological activity of L. pacari occurs. The aim of this study was to evaluate the healing activity of L. pacari leaves extract in an animal model. The extract was prepared from plants cultivated in Goiania-GO, Brazil. The healing activity was assayed using cutaneous wound model in rats, and macroscopic, morphometric and histological analysis of wounds were also conducted. The presence of hydrolysable tannins was detected in thin layer chromatography and in high performance liquid chromatography analysis, may be suggested the presence of ellagitannins. In the evaluation of cutaneous wounds in rats it was possible to observe that the treatment with 10% (w/v) L. pacari extract provided a reduction in the time of cutaneous wound healing, with a significant increase in variables involved in healing, such as the number of blood vessels and collagen production. Therefore, this study shows that L. pacari wound healing potential may be related to the presence of ellagitannins and corroborates to ethnopharmacological reports regarding this plant.

https://doi.org/10.1590/2175-7860202071058 634 downloads

Renal changes and acute kidney injury in covid-19: a systematic review
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Nogueira, Samuel Átila Rodrigues

; Oliveira, Samuel Ciríaco Silva de

; Carvalho, Ana Flávia Moreira de

; Neves, Julia Moreira Cavalcante

; Silva, Leila Silveira Vieira da

; Silva Junior, Geraldo Bezerra da

; Nobre, Maria Elizabeth Pereira

Revista da Associação Médica Brasileira

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2020, Volume 66 Suppl. 2 Pages 112 - 117

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

RESUMO OBJETIVO Apresentar uma revisão sobre as alterações renais nos pacientes com COVID-19. MÉTODOS Foi realizada uma revisão sistemática de literatura para buscar estudos referentes a pacientes com alterações renais clínicas, laboratoriais e anatomopatológicas durante a infecção por SARS-CoV-2. A busca foi realizada nas bases de dados eletrônicos PubMed, Scopus e Embase, com as palavras-chaves: “COVID-19”, “coronavirus”, “Sars-CoV-2”, “kidney injury” e “kidney disease”, para identificar artigos originais publicados na literatura até 07 de maio de 2020. Quinze estudos trouxeram alterações renais clínicas e laboratoriais dos pacientes com COVID-19, e três abordaram análises anatomopatológicas. DISCUSSÃO A Lesão renal aguda (LRA) foi um achado relevante nos pacientes com COVID-19. Houve também alterações significativas nos exames laboratoriais que indicam lesão renal, como o nível de creatinina e ureia séricas, proteinúria e hematúria. As alterações laboratoriais e a LRA foram importantes nos pacientes que desenvolveram o quadro grave da doença. Há considerável prevalência de LRA nos grupos de pacientes que vieram a óbito. Na análise histopatológica de pacientes com SARS-CoV-2 foram encontrados achados renais sugestivos que o vírus poderia ter efeitos diretos sobre o rim. CONCLUSÃO A COVID-19 é uma doença que, apesar de acometer principalmente os pulmões, também acomete os rins. Aumento das escórias nitrogenadas, hematúria, proteinúria e LRA foram achados frequentes em pacientes com quadros graves da COVID-19. Esses achados foram relacionados a maior mortalidade. É necessária a realização de mais estudos com enfoque nas alterações renais e suas implicações no quadro clínico causadas pelo novo coronavírus.

SUMMARY OBJECTIVE We aimed to present a review of renal changes in patients with COVID-19. METHODS We performed a systematic review of the literature to identify original articles regarding clinical, laboratory, and anatomopathological kidney changes in patients infected with SARS-CoV-2 published until May 7, 2020. The search was carried out across PubMed, Scopus, and Embase using the keywords “COVID-19”, “coronavirus”, “SARS-CoV-2”, “kidney injury” and “kidney disease”. Fifteen studies presented clinical and laboratory renal changes in patients with COVID-19, and three addressed anatomopathological changes. DISCUSSION Acute kidney injury (AKI) was a relevant finding in patients with COVID-19. There were also significant changes in laboratory tests that indicated kidney injury, such as increased serum creatinine and blood urea nitrogen (BUN), proteinuria, and hematuria. The presence of laboratory abnormalities and AKI were significant in severely ill patients. There was a considerable prevalence of AKI among groups of patients who died of COVID-19. Histopathological analysis of the kidney tissue of patients infected with SARS-CoV-2 suggested that the virus may directly affect the kidneys. CONCLUSION Although COVID-19 affects mainly the lungs, it can also impact the kidneys. Increased serum creatinine and BUN, hematuria, proteinuria, and AKI were frequent findings in patients with severe COVID-19 and were related to an increased mortality rate. Further studies focusing on renal changes and their implications for the clinical condition of patients infected with the novel coronavirus are needed.

https://doi.org/10.1590/1806-9282.66.s2.112 5020 downloads

Characteristics and outcomes of patients with COVID-19 admitted to the ICU in a university hospital in São Paulo, Brazil - study protocol
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Ferreira, Juliana C.

; Ho, Yeh-Li

; Besen, Bruno A.M.P.

; Malbuisson, Luiz M.S.

; Taniguchi, Leandro U.

; Mendes, Pedro V.

; Costa, Eduardo L.V.

; Park, Marcelo

; Daltro-Oliveira, Renato

; Roepke, Roberta M.L.

; Silva Jr, João M.

; Carmona, Maria José C.

; Carvalho, Carlos Roberto Ribeiro

; Hirota, Adriana

; Kanasiro, Alberto Kendy

; Crescenzi, Alessandra

; Fernandes, Amanda Coelho

; Miethke-Morais, Anna

; Bellintani, Arthur Petrillo

; Canasiro, Artur Ribeiro

; Carneiro, Bárbara Vieira

; Zanbon, Beatriz Keiko

; Batista, Bernardo Pinheiro De Senna Nogueira

; Nicolao, Bianca Ruiz

; Besen, Bruno Adler Maccagnan Pinheiro

; Biselli, Bruno

; Macedo, Bruno Rocha De

; Toledo, Caio Machado Gomes De

; Pompilio, Carlos Eduardo

; Carvalho, Carlos Roberto Ribeiro De

; Mol, Caroline Gomes

; Stipanich, Cassio

; Bueno, Caue Gasparotto

; Garzillo, Cibele

; Tanaka, Clarice

; Forte, Daniel Neves

; Joelsons, Daniel

; Robira, Daniele

; Costa, Eduardo Leite Vieira

; Silva Júnior, Elson Mendes Da

; Regalio, Fabiane Aliotti

; Segura, Gabriela Cardoso

; Marcelino, Gustavo Brasil

; Louro, Giulia Sefrin

; Ho, Yeh-Li

; Ferreira, Isabela Argollo

; Gois, Jeison de Oliveira

; Silva Junior, Joao Manoel Da

; Reusing Junior, Jose Otto

; Ribeiro, Julia Fray

; Ferreira, Juliana Carvalho

; Galleti, Karine Vusberg

; Silva, Katia Regina

; Isensee, Larissa Padrao

; Oliveira, Larissa dos Santos

; Taniguchi, Leandro Utino

; Letaif, Leila Suemi

; Lima, Lígia Trombetta

; Park, Lucas Yongsoo

; Chaves Netto, Lucas

; Nobrega, Luciana Cassimiro

; Haddad, Luciana

; Hajjar, Ludhmila

; Malbouisson, Luiz Marcelo

; Pandolfi, Manuela Cristina Adsuara

; Park, Marcelo

; Carmona, Maria José Carvalho

; Andrade, Maria Castilho Prandini H De

; Santos, Mariana Moreira

; Bateloche, Matheus Pereira

; Suiama, Mayra Akimi

; Oliveira, Mayron Faria de

; Sousa, Mayson Laercio

; Louvaes, Michelle

; Huemer, Natassja

; Mendes, Pedro

; Lins, Paulo Ricardo Gessolo

; Santos, Pedro Gaspar Dos

; Moreira, Pedro Ferreira Paiva

; Guazzelli, Renata Mello

; Reis, Renato Batista Dos

; Oliveira, Renato Daltro De

; Roepke, Roberta Muriel Longo

; Pedro, Rodolpho Augusto De Moura

; Kondo, Rodrigo

; Rached, Samia Zahi

; Fonseca, Sergio Roberto Silveira Da

; Borges, Thais Sousa

; Ferreira, Thalissa

; Cobello Junior, Vilson

; Sales, Vivian Vieira Tenório

; Ferreira, Willaby Serafim Cassa

Clinics

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2020, Volume 75 elocation e2294

Abstract: En | Text: En | PDF: En

OBJECTIVES: We designed a cohort study to describe characteristics and outcomes of patients with coronavirus disease (COVID-19) admitted to the intensive care unit (ICU) in the largest public hospital in Sao Paulo, Brazil, as Latin America becomes the epicenter of the pandemic. METHODS: This is the protocol for a study being conducted at an academic hospital in Brazil with 300 adult ICU beds dedicated to COVID-19 patients. We will include adult patients admitted to the ICU with suspected or confirmed COVID-19 during the study period. The main outcome is ICU survival at 28 days. Data will be collected prospectively and retrospectively by trained investigators from the hospital’s electronic medical records, using an electronic data capture tool. We will collect data on demographics, comorbidities, severity of disease, and laboratorial test results at admission. Information on the need for advanced life support and ventilator parameters will be collected during ICU stay. Patients will be followed up for 28 days in the ICU and 60 days in the hospital. We will plot Kaplan-Meier curves to estimate ICU and hospital survival and perform survival analysis using the Cox proportional hazards model to identify the main risk factors for mortality. ClinicalTrials.gov: NCT04378582. RESULTS: We expect to include a large sample of patients with COVID-19 admitted to the ICU and to be able to provide data on admission characteristics, use of advanced life support, ICU survival at 28 days, and hospital survival at 60 days. CONCLUSIONS: This study will provide epidemiological data about critically ill patients with COVID-19 in Brazil, which could inform health policy and resource allocation in low- and middle-income countries.

https://doi.org/10.6061/clinics/2020/e2294 1957 downloads

10.

Unique heterologous fibrin biopolymer with hemostatic, adhesive, sealant, scaffold and drug delivery properties: a systematic review
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Buchaim, Daniela Vieira

; Cassaro, Claudia Vilalva

; Shindo, João Vitor Tadashi Cosin

; Coletta, Bruna Botteon Della

; Pomini, Karina Torres

; Rosso, Marcelie Priscila de Oliveira

; Campos, Leila Maria Guissoni

; Ferreira Jr, Rui Seabra

; Barraviera, Benedito

; Buchaim, Rogério Leone

Journal of Venomous Animals and Toxins including Tropical Diseases

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2019, Volume 25 elocation e20190038

Abstract: En | Text: En | PDF: En

Abstract Fibrin biopolymers, previously referred as “fibrin glue” or “fibrin sealants”, are natural biomaterials with diverse applications on health. They have hemostatic, adhesive, sealant, scaffold and drug delivery properties and have become widely used in medical and dental procedures. Historically, these biomaterials are produced from human fibrinogen and human or animal thrombin, and the possibility of transmission of infectious diseases by human blood is not ruled out. In the 1990s, to overcome this problem, a new heterologous biomaterial composed of a thrombin-like enzyme purified from Crotalus durissus terrificus venom and a cryoprecipitate rich in fibrinogen extracted from buffaloes Bubalus bubalis blood has been proposed. Therefore, a systematic review of studies on exclusively heterologous fibrin sealants published between 1989 and 2018 was carried out using the following databases: PubMed, SciELO and Google Scholar. The keyword used was “heterologous fibrin sealant”. The search resulted in 35 scientific papers in PubMed, four in SciELO and 674 in Google Scholar. After applying the inclusion/exclusion criteria and complete reading of the articles, 30 studies were selected, which formed the basis of this systematic review. It has been observed that the only completely heterologous sealant is the one produced by CEVAP/UNESP. This heterologous biopolymer is proven effective by several studies published in refereed scientific journals. In addition, clinical trials phase I/II for the treatment of chronic venous ulcers authorized by the Brazilian Health Regulatory Agency (ANVISA) were completed. Preliminary results have indicated a safe and promising effective product. Phase III clinical trials will be proposed and required to validate these preliminary findings.

https://doi.org/10.1590/1678-9199-jvatitd-2019-0038 1483 downloads

11.

O processo de ensino-aprendizagem de puérperas nutrizes sobre aleitamento materno
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Rocha, Andréa Lyra Arnozo da

; Góes, Fernanda Garcia Bezerra

; Pereira, Fernanda Maria Vieira

; Moraes, Juliana Rezende Montenegro Medeiros de

; Barcia, Leila Leontina do Couto

; Silva, Liliane Faria da

Revista Cuidarte

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aug 2018, Volume 9 N. 2 Pages 2165 - 2176

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

Abstract Introduction The puerperal educational practice on breastfeeding should be part of the work of health professionals, including nurses. Within this perspective, the study sought to describe the teaching-learning process related to breastfeeding of puerperal mothers. Materials and Methods: Qualitative research, conducted in 2017, through the sensitive creative method, together with eight puerperal women in the Joint Housing of a municipal hospital in Rio das Ostras, Brazil, whose data were submitted to thematic analysis. Results The teaching-learning process was permeated by the influence of women from the family and from other pregnant women, in addition to health professionals, particularly hospital nurses. In these relationships, learning was about the importance of breastfeeding, quality of breast milk, positioning of the baby, and breast management. Mediation of knowledge occurred through prior experiences, as well as professional guidance through verbal and demonstrative strategies. Discussion Hospital nurses are the professionals who frequently guide and support breastfeeding. Conclusions It is necessary to advance in educational actions in health on the theme, especially from the previous knowledge of the puerperal women.

Resumen Introducción La práctica educativa en el puerperio sobre la lactancia materna debe estar incorporada en el hacer de los profesionales de salud, incluyendo el enfermero. En esta perspectiva, el objetivo del estudio fue describir el proceso de enseñanza-aprendizaje relacionado a la lactancia materna de puérperas en periodo de lactación. Materiales y Métodos: Investigación cualitativa, desarrollada en 2017, a través del método creativo sensible, junto a 08 puérperas en el Alojamiento Conjunto de un hospital municipal de Rio de las Ostras, Brasil, cuyos datos se sometieron al análisis temático. Resultados El proceso de enseñanza-aprendizaje fue impregnado por la influencia de mujeres de la familia y de otras gestantes, además de profesionales de la salud, particularmente de enfermeras del hospital. En estas relaciones, el aprendizaje fue sobre la importancia de la lactancia materna, la calidad de la leche materna, el posicionamiento del bebé y el manejo de las mamas. La mediación de saberes ocurrió por experiencias previas, además de orientaciones profesionales a través de estrategias verbales y demostrativas. Discusión Las enfermeras del hospital son las profesionales que con frecuencia orientan y apoyan la lactancia materna. Conclusiones Es necesario avanzar en acciones educativas en salud sobre la temática, especialmente a partir del conocimiento anterior de las puérperas.

Resumo Introdução A prática educativa no puerpério sobre aleitamento materno deve estar inserida no fazer dos profissionais de saúde, incluindo o enfermeiro. Nessa perspectiva, o estudo objetivou descrever o processo de ensino-aprendizagem relacionado ao aleitamento materno de puérperas nutrizes. Materiais e Métodos: Pesquisa qualitativa, desenvolvida em 2017, através do método criativo sensível, junto a 08 puérperas no Alojamento Conjunto de um hospital municipal de Rio das Ostras, Brasil, cujos dados foram submetidos à análise temática. Resultados O processo de ensino-aprendizagem foi permeado pela influência de mulheres da família e de outras gestantes, além de profissionais de saúde, particularmente de enfermeiras do hospital. Nessas relações, o aprendizado foi sobre importância da amamentação, qualidade do leite materno, posicionamento do bebê e manejo das mamas. A mediação de saberes ocorreu por experiências prévias, além de orientações profissionais através de estratégias verbais e demonstrativas. Discussão As enfermeiras do hospital são as profissionais que frequentemente orientam e apoiam o aleitamento materno. Conclusões É preciso avançar em ações educativas em saúde sobre a temática, especialmente a partir do conhecimento anterior das puérperas.

https://doi.org/10.15649/cuidarte.v9i2.510 11 downloads

12.

O processo de ensino-aprendizagem de puérperas nutrizes sobre aleitamento materno
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Rocha, Andréa Lyra Arnozo da

; Góes, Fernanda Garcia Bezerra

; Pereira, Fernanda Maria Vieira

; Moraes, Juliana Rezende Montenegro Medeiros de

; Barcia, Leila Leontina do Couto

; Silva, Liliane Faria da

Revista Cuidarte

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aug 2018, Volume 9 N. 2 Pages 2165 - 2176

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

https://doi.org/10.15649/cuidarte.v9i2.510 1963 downloads

13.

Dependência de internet e transtorno de déficit de atenção com hiperatividade (TDAH): revisão integrativa
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Schmidek, Helena Cristina Medeiros Vieira

; Gomes, Julia Corrêa

; Santos, Patricia Leila dos

; Carvalho, Ana Maria Pimenta de

; Pedrão, Luiz Jorge

; Corradi-Webster, Clarissa Mendonça

Jornal Brasileiro de Psiquiatria

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jun 2018, Volume 67 N. 2 Pages 126 - 134

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

RESUMO Objetivo Realizar uma revisão integrativa identificando na literatura trabalhos que pudessem sintetizar resultados que refletissem a possível relação entre dependência de internet (DI) e transtorno de déficit de atenção com hiperatividade (TDAH) na população adolescente, bem como achados desses estudos que agreguem informações para o aprimoramento e diagnóstico de DI. Métodos Revisão integrativa da literatura em três bases de dados: PsycINFO, Scopus e Cinahal, com os seguintes termos: “internet addiction”, “adolescent” e “attention deficit disorder with hyperactivity”, de 2007 a 2017, com informações sobre a relação da dependência de internet e o TDAH. Resultados A amostra ficou composta por 12 artigos originais, provenientes, em sua maioria, da Ásia e Oriente Médio. De sua análise emergiram as seguintes categorias: Relação entre DI e TDAH; Outros fatores associados à DI; Instrumentos para avaliação de DI e dados de incidência. Há ausência de critérios definidos de diagnóstico de dependência de internet, tendo sido identificados quatro instrumentos para mensurar a DI, todos os questionários foram preenchidos pelos próprios adolescentes, com índices na população variando entre 2,4% e 10,6%. Nos adolescentes diagnosticados com DI, as desordens de ansiedade e depressão foram as comorbidades mais citadas depois do TDAH. Conclusões Há evidências de associação importante entre os dois transtornos identificados, sem resultados conclusivos quanto ao processo da interação. Torna-se necessário o avanço em pesquisas visando a uma definição de critérios diagnósticos da DI, taxas de prevalência e preditores do problema, de modo a poder estabelecer intervenções terapêuticas e estratégias de prevenção do problema.

ABSTRACT Objective To perform an integrative review of the possible relationship between internet addiction (ID) and attention deficit hyperactivity disorder (ADHD) in adolescents aged 12 to 18 years. Also to gather informations in these studies for a more efficient diagnosis of DI. Methods Integrative review of the literature in three databases: PsycINFO, Scopus and Cinahal, with the following terms: “internet addiction”, “adolescent” and “attention deficit disorder with hyperactivity”, 2007-2017, with information about the relationship between Internet addiction and ADHD. Results The sample consisted of 12 original articles, mostly from Asia and the Middle East. From their analysis, the following categories emerged: Relationship between ID and ADHD; Other factors associated with ID; Instruments for evaluation of ID and incidence data. There is a lack of defined criteria for diagnosis of internet addiction, and four instruments were identified to measure ID, all questionnaires were completed by the adolescents themselves, with rates ranging from 2.4% to 10.6%. Anxiety and depression disorders were the most cited comorbidities after ADHD in the adolescents diagnosed with ID. Conclusions There are evidences of an important association between the two identified disorders, however without conclusive results on the interaction process. In order to establish therapeutic interventions and strategies to prevent the problem, it is necessary to advance research on the definition of the diagnostic criteria of ID, prevalence rates and predictors of the problem.

https://doi.org/10.1590/0047-2085000000195 11123 downloads

14.

Enhanced single-cell oil production by cold shock in cyanobacterial cultures
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Queiroz, Maria Isabel

; Maroneze, Mariana Manzoni

; Manetti, Adriana Gonçalves da Silva

; Vieira, Juliana Guerra

; Zepka, Leila Queiroz

; Jacob-Lopes, Eduardo

Ciência Rural

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2018, Volume 48 N. 11 elocation e20180366

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

RESUMO: O objetivo deste trabalho foi avaliar o aumento da produção de óleos unicelulares por Aphanothece microscopica Nägeli utilizando água residuária de processamento de laticínios como meio de cultura. O estudo concentrou-se na (i) otimização da temperatura para produção de biomassa, (ii) aplicação de choque frio para induzir a biossíntese de lipídios e (iii) determinação do perfil de ácidos graxos sob diferentes condições. Os resultados indicam que a temperatura de 20°C foi a melhor condição em termos de parâmetros cinéticos, atingindo produtividades de biomassa de 160,25mg/L.h. Nesta condição também foi observado um teor lipídico de 12,65%, o que resultou em uma produtividade lipídica de 20,27mg/L.h. Além disso, o choque frio de 0°C foi o mais eficiente para aumentar o conteúdo lipídico intracelular, que atingiu 28,4% em peso seco. Os choques frios também mostraram influência na saturação da composição de ácidos graxos, em que os ácidos graxos saturados diminuíram, e os ácidos graxos monoinsaturados e poli-insaturados ampliaram com o aumento da aplicação de frio. Assim, o uso de choques frios indica ser uma condição chave para melhorar as perspectivas de produção eficiente de óleos unicelulares.

ABSTRACT: The aim of this research was to evaluate the enhanced single-cell oil production by cold shock in Aphanothece microscopica Nägeli using dairy processing wastewater as culture medium. The study focused on (i) temperature optimization for biomass production, (ii) cold shock application to induce lipids biosynthesis and (iii) determination of fatty acids profile under different conditions. Results indicated that temperature of 20°C was the best condition in terms of kinetics parameter, reaching biomass productivities of 160.25mg/L.h. Under these conditions, a lipid content of 12.65% was also observed, resulting in a lipid productivity of 20.27mg/L.h. Additionally, the 0°C cold shock was the most efficient in increasing intracellular lipid content, reaching 28.4% in dry weight. Cold shocks also showed influence on the saturation of fatty acid composition, where the saturated fatty acids decreased, and the monounsaturated and polyunsaturated fatty acids increased by increasing the cold application. Thus, the use of cold shocks indicates to be a key condition for improving the prospects of efficient single-cell oils production.

https://doi.org/10.1590/0103-8478cr20180366 799 downloads

15.

Floral and reproductive biology of Alcantarea nahoumii (Bromeliaceae), a vulnerable endemic species of the Atlantic Forest
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Bastos, Maria Josirene Souza Moreira

; Bastos, Lucimário Pereira

; Souza, Everton Hilo de

; Soares, Taliane Leila

; Morais, Daniel Vieira

; Souza, Fernanda Vidigal Duarte de

; Costa, Maria Angélica Pereira de Carvalho

Acta Botanica Brasilica

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dec 2017, Volume 31 N. 4 Pages 665 - 676

Abstract: En | Text: En | PDF: En

ABSTRACT Alcantarea nahoumii occurs exclusively in the state of Bahia, Brazil, and is classified as vulnerable due to deforestation and frequent fires in the region. Knowledge of floral and reproductive biology is fundamental to understanding ecological interactions, as well as the reproductive success of plant species. The objective of this study was to evaluate the floral and reproductive biology of A. nahoumii in an Atlantic Forest fragment with regard to phenology, pollen viability, stigma receptivity, pollination ecology and reproductive systems, all of which are important parameters for of the development of conservation strategies for the species. Anthesis is diurnal and heterogeneous, starting at 6:30 a.m. and lasting until 8:00 a.m. Highest germination percentages and greatest pollen tube lengths were obtained in BK culture medium. Histochemical tests revealed high pollen viability (89.71 %). Stigma receptivity occurred during anthesis and lasted for up to 24 hours after floral opening. Alcantarea nahoumii exhibited preferential allogamy and self-compatibility, and required a pollinator to production of viable seeds. Sixteen species of pollinators were observed visiting A. nahoumii, among which were five hummingbird species. Even though its reproductive system is efficient, this bromeliad remains threatened mainly due to habitat fragmentation caused by deforestation, burning and predatory extractivism.

https://doi.org/10.1590/0102-33062017abb0102 2025 downloads

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Glossary and search help

You can enrich your search in a very simple way. Use the search indexes combined with the connectors (AND or OR) and specify more your search.

For example, if you want to search for articles about
cases of dengue in Brasil in 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

See below the complete list of search indexes that can be used:

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

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