227 research outputs found

    ATLANTIC EPIPHYTES: a data set of vascular and non-vascular epiphyte plants and lichens from the Atlantic Forest

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    Epiphytes are hyper-diverse and one of the frequently undervalued life forms in plant surveys and biodiversity inventories. Epiphytes of the Atlantic Forest, one of the most endangered ecosystems in the world, have high endemism and radiated recently in the Pliocene. We aimed to (1) compile an extensive Atlantic Forest data set on vascular, non-vascular plants (including hemiepiphytes), and lichen epiphyte species occurrence and abundance; (2) describe the epiphyte distribution in the Atlantic Forest, in order to indicate future sampling efforts. Our work presents the first epiphyte data set with information on abundance and occurrence of epiphyte phorophyte species. All data compiled here come from three main sources provided by the authors: published sources (comprising peer-reviewed articles, books, and theses), unpublished data, and herbarium data. We compiled a data set composed of 2,095 species, from 89,270 holo/hemiepiphyte records, in the Atlantic Forest of Brazil, Argentina, Paraguay, and Uruguay, recorded from 1824 to early 2018. Most of the records were from qualitative data (occurrence only, 88%), well distributed throughout the Atlantic Forest. For quantitative records, the most common sampling method was individual trees (71%), followed by plot sampling (19%), and transect sampling (10%). Angiosperms (81%) were the most frequently registered group, and Bromeliaceae and Orchidaceae were the families with the greatest number of records (27,272 and 21,945, respectively). Ferns and Lycophytes presented fewer records than Angiosperms, and Polypodiaceae were the most recorded family, and more concentrated in the Southern and Southeastern regions. Data on non-vascular plants and lichens were scarce, with a few disjunct records concentrated in the Northeastern region of the Atlantic Forest. For all non-vascular plant records, Lejeuneaceae, a family of liverworts, was the most recorded family. We hope that our effort to organize scattered epiphyte data help advance the knowledge of epiphyte ecology, as well as our understanding of macroecological and biogeographical patterns in the Atlantic Forest. No copyright restrictions are associated with the data set. Please cite this Ecology Data Paper if the data are used in publication and teaching events. © 2019 The Authors. Ecology © 2019 The Ecological Society of Americ

    ATIVIDADE DA FOSFATASE ÁCIDA NO FEIJOEIRO E SUA CORRELAÇÃO COM PARÂMETROS DE CRESCIMENTO ACTIVITY OF ACID PHOSPHATASE IN COMMON BEAN AND ITS CORRELATION WITH SOME PARAMETERS OF PLANT GROWTH

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    <!-- @page { margin: 2cm } --> <p class="western" align="justify"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">Um experimento em condições de campo foi realizado no campo experimental da Embrapa Arroz e Feijão, Goiânia (GO), com a finalidade de selecionar parâmetros representativos do desenvolvimento do feijoeiro (<em>Phaseolus</em> <em>vulgaris</em> L.) para serem correlacionados com a atividade da fosfatase ácida. A importância desta fosfatase está relacionada com a sua habilidade de retirar fósforo em condições de baixo teor deste nutriente em solo ácido. Foram testadas cinco cultivares de feijão através do recolhimento semanal de plantas entre 7 e 56 dias após germinação. Os maiores valores da atividade, em ordem decrescente, foram observadas nas cultivares LM 300030, Carioca, A-176, CNF-l0 e Jalo, em plantas com idade entre 7 e 14 dias. Todos os parâmetros de crescimento analisados correlacionaram-se negativamente com a atividade desta enzima. Por isso, a atividade da fosfatase foi considerada um mecanismo complementar que a planta utiliza para suprir suas necessidades em fósforo. As curvas de atividade da fosfatase ácida, fósforo inorgânico e fósforo total foram semelhantes e expressas por equações do segundo grau, enquanto os fósforos, inorgânico e total, decresceram de acordo com o modelo negativo de equações exponenciais.</span></span></p> <p class="western" align="justify"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">PALAVRAS-CHAVE: Fosfatase; acidez do solo; feijão; <em>Phaseolus</em> <em>vulgaris</em>; genótipos.</span></span></p><!-- @page { margin: 2cm } --> <p class="western" align="justify"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">A field experiment was carried out at the experimental field of Embrapa Arroz e Feijão with the objective to select representative parameters of the common bean (<em>Phaseolus vulgaris</em> L.) plant growth to be correlated with acid phosphatase activity. The importance of this phosphatase is related with its ability to improve phosphorus up fall under low concentration in acid soil. Five common bean cultivars were tested harvesting plants at weekly interval starting from 7 till 56 days after germination. The enzyme activity in decreasing order was observed in the LM 300030, Carioca, A-176, CNF-10 and Jalo cultivars at l4 day old plants. All the plant parameters analyzed correlated negatively with enzyme activity. Then, the phosphatase activity was considered as a complementary mechanism to the plant to supply its phosphorus needs. The curves of acid phosphatase activity, inorganic and total phosphorus were similar and expressed by second grade equations while both, inorganic and total phosphorus, decreased according to negatively exponential equation modelings. </span></span></p> <p class="western" align="justify"><span style="font-family: Times New Roman,serif;"><span style="font-size: small;">KEY-WORDS: Phosphatase; acid soil; common bean; <em>Phaseolus</em> <em>vulgaris</em>; genotypes.</span></span></p&gt

    Magnesium sulphate and the development of the common bean cultivated in an Ultisol of Northeast Australia Sulfato de magnésio e o desenvolvimento do feijoeiro comum cultivado em um Ultissolo do Nordeste da Australia

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    Magnesium applications (MgS0(4).7H(2)0) to achieve 8 and 16 mmol c/cm3 of Mg (324 and 1284 kg of MgS0(4) ha-1) were made on one Ultisol from Australia Northeast to correct Mg deficiency in plants and to verify the optimum level of Mg to grow common bean (Phaseolus vulgaris L). Magnesium was applied together with lime, N, K, Cu, Zn, B, and Mo as calcium carbonate, ammonium nitrate, potassium phosphate, cupric and zinc sulphate, boric acid and sodium molybdate respectively a month before planting and P as phosphoric acid at the planting. The pH reached the equilibrium after six weeks of incubation. Higher electrical conductivity (EC) was observed in soil where Mg was applied to reach 8 mmol c/cm3 in the absence of common bean and 16 mmol c/cm3 when the plant was present. Higher plant height, leaf area, dry matter weight:leaf area ratio and nutrient concentrations were observed in plants cultivated in soils treated with Mg to reach 8 mmol c/cm3 and 16 mmol c/cm3 when the plant was present. The plant top P content was very low but N, Ca and Mg contents can be considered normal for the common bean.<br>Aplicações de sulfato de magnésio (MgS0(4).7H(2)0) para atigir 8 e 16 mmol c/cm3 de Mg (324 e 1284 kg de MgS0(4) ha-1) foram realizadas em um solo Ultissolo com a finalidade de corrigir deficiências de Mg no feijoeiro e verificar o nível de Mg suficiente para cultivar o feijão comum (Phaseolus vugaris L). O magnésio foi aplicado junto com calcário, N, K, Cu, Zn, B e Mo, como carbonato de cálcio, nitrato de amônio, fosfato de potássio, sulfato de cobre, sulfato de zinco, ácido bórico e molibidato de sódio respectivamente, um mês antes do plantio e o P como ácido fosfórico no plantio. O pH alcançou o equilíbrio após seis semanas de incubação. A condutividade elétrica mais alta (CE) foi observada em solo onde o Mg foi aplicado para atingir 8 mmol c/cm3 na ausência e 16 mmol c/cm3 na presença do feijoeiro A altura das plantas , área foliar, relação matéria seca/área foliar e concentrações de nutrientes no tecido foram maiores nas plantas cultivadas em solos tratados com Mg para atigir 8 mmol c/cm3 . O teor de P foi muito baixo mas os de N, Ca e Mg podem ser considerados normais para o feijoeiro comum

    T-piece versus self-inflating bag ventilation in preterm neonates at birth

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    Objective To verify whether the use of the T-piece resuscitator compared with the self-inflating bag in preterm infants ventilated at birth modifies survival to hospital discharge without major morbidities. Design Pragmatic prospective cohort study. Setting 20 Brazilian university hospitals of Brazilian Network on Neonatal Research. Patients were 1962 inborn infants in 2014-2015 ventilated at birth with 23-33' weeks gestation and birth weight 400-1499 g without malformations. Patients transferred until the 27th day after birth were excluded. Interventions Positive pressure ventilation at birth with T-piece resuscitator or self-inflating bag without positive end expiratory pressure valve. Intervention with ventilation followed the Brazilian Society of Pediatrics guidelines. The choice of the equipment was at the neonatologist's discretion in each delivery. The main outcome measures were survival to hospital discharge without bronchopulmonary dysplasia, severe peri-intraventricular haemorrhage and periventricular leucomalada. Logistic regression adjusted for confounding variables was applied for main outcome. Results 1456 (74%) were only ventilated with T-piece resuscitator and 506 (26%) with the self-inflating bag. The characteristics of those ventilated with T-Piece resuscitator versus self-inflating bag were birth weight 969 +/- 277 vs 941 +/- 279 g, gestational age 28.2 +/- 2.5 vs 27.8 +/- 2.7 weeks and survival to hospital discharge without major morbidities 47% vs 35%, Logistic regression adjusted for maternal characteristics, obstetric and neonatal morbidities showed that the T-piece resuscitator increased the chance of survival to hospital discharge without major morbidities (OR=1.38; 95% Cl 1.06 to 1.80; Hosmer-Lemeshow goodness of fit: 0.695). Conclusion This study is the first that highlights the effectiveness of T-piece resuscitator ventilation in improving relevant outcomes in preterm neonates.Univ Fed Sao Paulo, Div Neonatal Med, Sao Paulo, BrazilUniv Sao Paulo, Dept Pediat, Fac Med Ribeirao Preto, Ribeirao Preto, BrazilUniv Fed Maranhao, Dept Pediat, Sao Luis, BrazilUniv Estadual Campinas, Dept Pediat, Fac Ciencias Med, Campinas, SP, BrazilUniv Sao Paulo, Dept Pediat, Fac Med, Sao Paulo, BrazilUniv Estadual Paulista, Div Neonatol, Fac Med Botucatu, Botucatu, SP, BrazilFundacao Oswaldo Cruz, Div Neonatol, Rio De Janeiro, BrazilPontificia Univ Catolica Rio Grande do Sul, Dept Pediat, Hosp Sao Lucas, Fac Med, Porto Alegre, RS, BrazilUniv Fed Rio Grande do Sul, Div Neonatol, Hosp Clin Porto Alegre, Porto Alegre, RS, BrazilUniv Estado Rio de Janeiro, Dept Pediat, Hosp Univ Pedro Ernesto, Rio De Janeiro, BrazilUniv Fed Minas Gerais, Div Neonatol, Belo Horizonte, MG, BrazilUniv Fed Uberlandia, Pediat, Uberlandia, MG, BrazilMaternidade Hilda Brandao, Dept Pediat, Fac Ciencias Med Minas Gerais, Belo Horizonte, MG, BrazilUniv Sao Paulo, Sch Med, Dept Pediat, Sao Paulo, SP, BrazilHosp Estadual Sumare, Neonatal Div, Sumare, BrazilHosp Geral Pirajussara, Neonatal Unit, Taboao Da Serra, BrazilHosp Estadual Diadema, Neonatal Unit, Diadema, BrazilUniv Estadual Londrina, Dept Pediat, Hosp Univ, Curitiba, Parana, BrazilUniv Fed Parana, Dept Pediat, Hosp Clin, Curitiba, Parana, BrazilInst Med Integral Prof Fernando Figueira, Dept Pediat, Recife, PE, BrazilInst Fernandes Figueira FIOCRUZ, Dept Pediat, Rio De Janeiro, BrazilUniv Fed Sao Paulo, Div Neonatal Med, Sao Paulo, BrazilWeb of Scienc

    Early Empiric Antibiotic Use Is Associated With Delayed Feeding Tolerance in Preterm Infants: A Retrospective Analysis

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    The causative factors of neonatal feeding intolerance are poorly understood, but potentially related to clinical practices such as empiric antibiotic usage. The objective of this study was to evaluate whether early empiric antibiotic exposure negatively affects preterm infants' enteral feeding tolerance. Data from infants without risk factors for sepsis, 500 to 1499 g birth weight and 24 to 34 weeks gestational age were analyzed. The primary outcomes were the empiric antibiotic exposure effects on the infants' total parenteral nutrition usage duration and prevalence of necrotizing enterocolitis (NEC). Among the 901 infants included, 67 were exposed to early empiric antibiotic. A 50% increase in parenteral nutrition usage duration and a 4-fold greater prevalence of NEC was seen in the early empiric antibiotic-exposed neonates, when compared with control infants (P<0.01). Early empiric antibiotic exposure appears to negatively influence preterm infant feeding tolerance and possibly contributes to NEC.Brazilian Ministry of HealthUniv Sao Paulo, Fac Med Ribeirao Preto, Sao Paulo, BrazilUniv Sao Paulo, Fac Med Sau Paulo, Sao Paulo, BrazilUniv Fed Sao Paulo, Escola Paulista Med, Sao Paulo, BrazilInst Med Integral Prof Fernando Figueira IMIP, Recife, PE, BrazilUniv Fed Maranhao, Hosp Univ, Sao Luis, BrazilUniv Estadual Campinas, Fac Ciencias Med, Sao Paulo, BrazilUNESP, Fac Med Botucatu, Botucatu, SP, BrazilFiocruz MS, Inst Fernandes Figueira, Rio De Janeiro, BrazilPUC Porto Alegre, Fac Med, Porto Alegre, RS, BrazilUniv Fed Rio Grande do Sul, Porto Alegre, RS, BrazilUniv Estado Rio De Janeiro, Rio De Janeiro, BrazilUniv Fed Minas Gerais, Belo Horizonte, MG, BrazilUniv Fed Uberlandia, Uberlandia, MG, BrazilFac Ciencias Med Minas Gerais, Belo Horizonte, MG, BrazilUniv Sao Paulo, Hosp Univ, Sao Paulo, BrazilHosp Estadual Sumare, Sumare, BrazilHosp Geral Pirajussara, Taboao De Serra, BrazilHosp Estadual Diadema, Diadema, BrazilUniv Estadual Londrina, Londrina, BrazilUniv Fed Parana, Curitiba, Parana, BrazilUniv Toronto, Toronto, ON, CanadaUniv Fed Sao Paulo, Escola Paulista Med, Sao Paulo, BrazilBrazilian Ministry of HealthWeb of Scienc

    Recent HIV infection and annualized HIV incidence rates among sexual and gender minorities in Brazil and Peru (ImPrEP seroincidence study): a cross-sectional, multicenter studyResearch in context

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    Summary: Background: HIV incidence estimation is critical for monitoring the HIV epidemic dynamics and the effectiveness of public health prevention interventions. We aimed to identify sexual and gender minorities (SGM) with recent HIV infections, factors associated with recent HIV infection, and to estimate annualised HIV incidence rates. Methods: Cross-sectional multicentre study in HIV testing services in Brazil and Peru (15 cities). Inclusion criteria: 18+ years, SGM assigned male at birth, not using pre-/post-exposure prophylaxis. We identified recent HIV infection using the Maxim HIV-1 LAg-Avidity EIA assay as part of a recent infection testing algorithm (RITA). Annualized HIV incidence was calculated using the UNAIDS/WHO incidence estimator tool. Multivariable logistic regression models were used to estimate factors associated with recent HIV infection. Trial registration: NCT05674682. Findings: From 31-Jan-2021 to 29-May-2022, 6899 individuals participated [Brazil: 4586 (66.5%); Peru: 2313 (33.5%)]; 5946 (86.2%) cisgender men, 751 (10.9%) transgender women and 202 (2.9%) non-binary/gender diverse. Median age was 27 (IQR: 23–34) years. HIV prevalence was 11.4% (N = 784/6899); 137 (2.0%) SGM were identified with recent HIV infection. The overall annualized HIV incidence rate was 3.88% (95% CI: 2.86–4.87); Brazil: 2.62% (95% CI: 1.78–3.43); Peru: 6.69% (95% CI: 4.62–8.69). Participants aged 18–24 years had higher odds of recent HIV infection compared to those aged 30+ years in both countries. Interpretation: Our results highlight the significant burden of HIV epidemic among SGM in large urban centres of Brazil and Peru. Public health policies and interventions to increase access to effective HIV prevention methods such as PrEP are urgently needed in Latin America. Funding: Unitaid, WHO (Switzerland), Ministry of Health from Brazil and Peru

    Implementation of a Brazilian Cardioprotective Nutritional (BALANCE) Program for improvement on quality of diet and secondary prevention of cardiovascular events: A randomized, multicenter trial

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    Background: Appropriate dietary recommendations represent a key part of secondary prevention in cardiovascular disease (CVD). We evaluated the effectiveness of the implementation of a nutritional program on quality of diet, cardiovascular events, and death in patients with established CVD. Methods: In this open-label, multicenter trial conducted in 35 sites in Brazil, we randomly assigned (1:1) patients aged 45 years or older to receive either the BALANCE Program (experimental group) or conventional nutrition advice (control group). The BALANCE Program included a unique nutritional education strategy to implement recommendations from guidelines, adapted to the use of affordable and regional foods. Adherence to diet was evaluated by the modified Alternative Healthy Eating Index. The primary end point was a composite of all-cause mortality, cardiovascular death, cardiac arrest, myocardial infarction, stroke, myocardial revascularization, amputation, or hospitalization for unstable angina. Secondary end points included biochemical and anthropometric data, and blood pressure levels. Results: From March 5, 2013, to Abril 7, 2015, a total of 2534 eligible patients were randomly assigned to either the BALANCE Program group (n = 1,266) or the control group (n = 1,268) and were followed up for a median of 3.5 years. In total, 235 (9.3%) participants had been lost to follow-up. After 3 years of follow-up, mean modified Alternative Healthy Eating Index (scale 0-70) was only slightly higher in the BALANCE group versus the control group (26.2 ± 8.4 vs 24.7 ± 8.6, P <.01), mainly due to a 0.5-serving/d greater intake of fruits and of vegetables in the BALANCE group. Primary end point events occurred in 236 participants (18.8%) in the BALANCE group and in 207 participants (16.4%) in the control group (hazard ratio, 1.15; 95% CI 0.95-1.38; P =.15). Secondary end points did not differ between groups after follow-up. Conclusions: The BALANCE Program only slightly improved adherence to a healthy diet in patients with established CVD and had no significant effect on the incidence of cardiovascular events or death. © 2019 The Author
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