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Aging-related predictive factors for oxygenation improvement and mortality in COVID-19 and acute respiratory distress syndrome (ARDS) patients exposed to prone position: A multicenter cohort study
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Cunha, Marieta C.A.
; Schardong, Jociane
; Righi, Natiele C.
; Lunardi, Adriana C.
; Sant’Anna, Guadalupe N.
; Isensee, Larissa P.
; Xavier, Rafaela F.
; Pompeu, Jose E.
; Weigert, Renata M.
; Matte, Darlan L.
; Cardoso, Rozana A.
; Abras, Ana C.V.
; Silva, Antonio M.V.
; Dorneles, Camila C.
; Werle, Roberta W.
; Starke, Ana C.
; Ferreira, Juliana C.
; Plentz, Rodrigo D.M.
; Carvalho, Celso R.F.
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Abstract Background: Elderly patients are more susceptible to Coronavirus Disease-2019 (COVID-19) and are more likely to develop it in severe forms, (e.g., Acute Respiratory Distress Syndrome [ARDS]). Prone positioning is a treatment strategy for severe ARDS; however, its response in the elderly population remains poorly understood. The main objective was to evaluate the predictive response and mortality of elderly patients exposed to prone positioning due to ARDS-COVID-19. Methods: This retrospective multicenter cohort study involved 223 patients aged ≥ 65 years, who received prone position sessions for severe ARDS due to COVID-19, using invasive mechanical ventilation. The PaO2/FiO2 ratio was used to assess the oxygenation response. The 20-point improvement in PaO2/FiO2 after the first prone session was considered for good response. Data were collected from electronic medical records, including demographic data, laboratory/image exams, complications, comorbidities, SAPS III and SOFA scores, use of anticoagulants and vasopressors, ventilator settings, and respiratory system mechanics. Mortality was defined as deaths that occurred until hospital discharge. Results: Most patients were male, with arterial hypertension and diabetes mellitus as the most prevalent comorbidities. The non-responders group had higher SAPS III and SOFA scores, and a higher incidence of complications. There was no difference in mortality rate. A lower SAPS III score was a predictor of oxygenation response, and the male sex was a risk predictor of mortality. Conclusion: The present study suggests the oxygenation response to prone positioning in elderly patients with severe COVID-19-ARDS correlates with the SAPS III score. Furthermore, the male sex is a risk predictor of mortality.
2.
Effects of Exercise Training on Left Ventricular Diastolic Function Markers in Patients with Obstructive Sleep Apnea: A Randomized Study
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Durante, Bruno G.
; Ferreira-Silva, Rosyvaldo
; Goya, Thiago T.
; Lima, Marta F.
; Rodrigues, Ana Clara T.
; Drager, Luciano F.
; Jordão, Camila P.
; Rodrigues, Amanda G.
; Alves, Maria Janieire de Nazare N.
; Lorenzi-Filho, Geraldo
; Negrão, Carlos E.
; Ueno-Pardi, Linda M.
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International Journal of Cardiovascular Sciences
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Abstract Background Exercise training (ET) is an adjunctive treatment for obstructive sleep apnea (OSA) and its consequences. However, the effects of exercise on heart remodeling are unknown in the population with OSA. Objective We investigated the effect of ET on markers of diastolic function, sleep parameters, and functional capacity in patients with OSA. Methods Sedentary patients with OSA (apnea-hypopnea index, AHI ≥15 events/hr) were randomly assigned to untrained (n=18) and trained (n=20) strategies. Polysomnography, cardiopulmonary exercise test, and echocardiography were evaluated at the beginning and end of the study. ET consisted of 3 weekly sessions of aerobic exercise, resistance exercises, and flexibility training (72 sessions, completed in 11.65±0.86 months). A two-way analysis of variance (ANOVA) was used, followed by Tukey's post-hoc test. The level of statistical significance was set at p<0.05 for all analyses. Result Thirty-eight patients were included (AHI:45±29 events/hr, age:52±7 y, body mass index: 30±4 kg/m2). They had similar baseline parameters. ET caused a significant change in OSA severity (AHI:4.5±18 versus -5.7±13 events/hr; arousal index:1.5±8 versus -6.1±13 events/hr, in untrained and trained groups respectively, p<0.05). The trained patients had an increase in functional capacity after intervention. ET improved isovolumetric relaxation time (IVRT, untrained=6.5±17.3 versus trained=-5.1±17.1 msec, p<0.05). There was a significant correlation between changes in IVRT and arousal index in the trained group (r =-0.54, p<0.05). No difference occurred in the other diastolic function parameters evaluated. Conclusion ET promotes modest but significant improvement in AHI, functional capacity, and cardiac IVRT, a validated parameter of diastolic function.
3.
Drying kinetics of ‘gueroba’ (Syagrus oleracea) fruit pulp
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Jorge, Ana P. P.
; Ferreira Junior, Weder N.
; Silva, Lígia C. de M.
; Oliveira, Daniel E. C. de
; Resende, Osvaldo
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Revista Brasileira de Engenharia Agrícola e Ambiental
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RESUMO O fruto de gueroba pode ser utilizado na produção de farinhas com potencial para o desenvolvimento de novos produtos oriundos da sociobiodiversidade do Cerrado. Objetivou-se estimar a cinética de secagem, bem como determinar o coeficiente de difusão efetivo e a energia de ativação para a polpa dos frutos de gueroba submetida a diferentes temperaturas de secagem. Os frutos de gueroba foram despolpados manualmente, retirando o mesocarpo com o epicarpo, sendo esse material identificado como a polpa. O material foi submetido à secagem em estufa nas temperaturas de 40, 50, 60 e 70 °C. Aos dados experimentais foram ajustados modelos de regressão não linear. O modelo mais adequado foi selecionado com base no coeficiente de determinação, erro médio relativo e estimado, teste de Qui-quadrado, AIC e BIC. Com o aumento da temperatura de secagem, menor é o tempo do processamento para se atingir o mesmo teor de água, devido ao aumento da difusividade da água no interior do produto. O modelo de Midilli apresentou o melhor ajuste aos dados experimentais obtidos. Os coeficientes de difusão efetivos da polpa dos frutos de gueroba apresentaram magnitudes entre 3,11 x 10-9 a 5,84 x 10-9 m2 s-1 para as temperaturas de 40 a 70 °C. A energia de ativação do processo foi de 18,34 kJ mol-1.
ABSTRACT The ‘Gueroba’ fruit can be used to produce flours with potential for the development of new products from the ‘Cerrado’ socio-biodiversity. The objective was to estimate the drying kinetics and determine the effective diffusion coefficient and activation energy for the pulp of ‘gueroba’ fruits subjected to different drying temperatures. ‘Gueroba’ fruits were manually pulped, removing the mesocarp with the epicarp, and this material was identified as the pulp. The material was subjected to oven drying at temperatures of 40, 50, 60 and 70 °C. Nonlinear regression models were fitted to the experimental data. The most adequate model was selected through the coefficient of determination, mean relative and estimated errors, Chi-square test, AIC and BIC. As the drying temperature increases, the processing time to achieve the same moisture content decreases, due to the increase in water diffusivity inside the product. The Midilli model showed the best fit to the experimental data obtained. The effective diffusion coefficients of the pulp of ‘gueroba’ fruits showed magnitudes between 3.11 x 10-9 to 5.84 x 10-9 m2 s-1 for temperatures from 40 to 70 °C. The activation energy of the process was 18.34 kJ mol-1.
https://doi.org/10.1590/1807-1929/agriambi.v25n1p23-29
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4.
Persistent symptoms and decreased health-related quality of life after symptomatic pediatric COVID-19: A prospective study in a Latin American tertiary hospital
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Fink, Thais T.
; Marques, Heloisa H.S.
; Gualano, Bruno
; Lindoso, Livia
; Bain, Vera
; Astley, Camilla
; Martins, Fernanda
; Matheus, Denise
; Matsuo, Olivia M.
; Suguita, Priscila
; Trindade, Vitor
; Paula, Camila S.Y.
; Farhat, Sylvia C.L.
; Palmeira, Patricia
; Leal, Gabriela N.
; Suzuki, Lisa
; Odone Filho, Vicente
; Carneiro-Sampaio, Magda
; Duarte, Alberto José S.
; Antonangelo, Leila
; Batisttella, Linamara R.
; Polanczyk, Guilherme V.
; Pereira, Rosa Maria R.
; Carvalho, Carlos Roberto R.
; Buchpiguel, Carlos A.
; Latronico, Ana Claudia
; Seelaender, Marilia
; Silva, Clovis Artur
; Pereira, Maria Fernanda B.
; Sallum, Adriana M. E.
; Brentani, Alexandra V. M.
; Neto, Álvaro José S.
; Ihara, Amanda
; Santos, Andrea R.
; Canton, Ana Pinheiro M.
; Watanabe, Andreia
; Santos, Angélica C. dos
; Pastorino, Antonio C.
; Franco, Bernadette D. G. M.
; Caruzo, Bruna
; Ceneviva, Carina
; Martins, Carolina C. M. F.
; Prado, Danilo
; Abellan, Deipara M.
; Benatti, Fabiana B.
; Smaria, Fabiana
; Gonçalves, Fernanda T.
; Penteado, Fernando D.
; Castro, Gabriela S. F. de
; Gonçalves, Guilherme S.
; Roschel, Hamilton
; Disi, Ilana R.
; Marques, Isabela G.
; Castro, Inar A.
; Buscatti, Izabel M.
; Faiad, Jaline Z.
; Fiamoncini, Jarlei
; Rodrigues, Joaquim C.
; Carneiro, Jorge D. A.
; Paz, Jose A.
; Ferreira, Juliana C.
; Ferreira, Juliana C. O.
; Silva, Katia R.
; Bastos, Karina L. M.
; Kozu, Katia
; Cristofani, Lilian M.
; Souza, Lucas V. B.
; Campos, Lucia M. A.
; Silva Filho, Luiz Vicente R. F.
; Sapienza, Marcelo T.
; Lima, Marcos S.
; Garanito, Marlene P.
; Santos, Márcia F. A.
; Dorna, Mayra B.
; Aikawa, Nadia E.
; Litvinov, Nadia
; Sakita, Neusa K.
; Gaiolla, Paula V. V.
; Pasqualucci, Paula
; Toma, Ricardo K.
; Correa-Silva, Simone
; Sieczkowska, Sofia M.
; Imamura, Marta
; Forsait, Silvana
; Santos, Vera A.
; Zheng, Yingying
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OBJECTIVES: To prospectively evaluate demographic, anthropometric and health-related quality of life (HRQoL) in pediatric patients with laboratory-confirmed coronavirus disease 2019 (COVID-19) METHODS: This was a longitudinal observational study of surviving pediatric post-COVID-19 patients (n=53) and pediatric subjects without laboratory-confirmed COVID-19 included as controls (n=52) was performed. RESULTS: The median duration between COVID-19 diagnosis (n=53) and follow-up was 4.4 months (0.8-10.7). Twenty-three of 53 (43%) patients reported at least one persistent symptom at the longitudinal follow-up visit and 12/53 (23%) had long COVID-19, with at least one symptom lasting for >12 weeks. The most frequently reported symptoms at the longitudinal follow-up visit were headache (19%), severe recurrent headache (9%), tiredness (9%), dyspnea (8%), and concentration difficulty (4%). At the longitudinal follow-up visit, the frequencies of anemia (11% versus 0%, p=0.030), lymphopenia (42% versus 18%, p=0.020), C-reactive protein level of >30 mg/L (35% versus 0%, p=0.0001), and D-dimer level of >1000 ng/mL (43% versus 6%, p=0.0004) significantly reduced compared with baseline values. Chest X-ray abnormalities (11% versus 2%, p=0.178) and cardiac alterations on echocardiogram (33% versus 22%, p=0.462) were similar at both visits. Comparison of characteristic data between patients with COVID-19 at the longitudinal follow-up visit and controls showed similar age (p=0.962), proportion of male sex (p=0.907), ethnicity (p=0.566), family minimum monthly wage (p=0.664), body mass index (p=0.601), and pediatric pre-existing chronic conditions (p=1.000). The Pediatric Quality of Live Inventory 4.0 scores, median physical score (69 [0-100] versus 81 [34-100], p=0.012), and school score (60 [15-100] versus 70 [15-95], p=0.028) were significantly lower in pediatric patients with COVID-19 at the longitudinal follow-up visit than in controls. CONCLUSIONS: Pediatric patients with COVID-19 showed a longitudinal impact on HRQoL parameters, particularly in physical/school domains, reinforcing the need for a prospective multidisciplinary approach for these patients. These data highlight the importance of closer monitoring of children and adolescents by the clinical team after COVID-19.
5.
Seroprevalence and incidence of Leptospira spp. in domestic dogs in the Southeast region of São Paulo State, Brazil
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Sevá, Anaiá P.
; Brandão, Ana Pérola D.
; Godoy, Silvia N.
; Souza, Gisele O.
; Souza Filho, Antonio Francisco
; Jimenez-Villegas, Tatiana
; Heinemann, Marcos Bryan
; Ferreira, Fernando
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RESUMO: A leptospirose é uma zoonose causada pelo agente etiológico Leptospira. Cães domésticos atuam como hospedeiro de diversos sorovares deste agente. Com intuito de analisar a dinâmica da leptospirose em uma população canina, com e sem imunização, um estudo longitudinal foi realizado avaliando a resposta sorológica destes animais e identificando seus sorovares. Foram coletadas amostras de 331, 373 e 347 cães em três anos consecutivos (2015 a 2017). As soroprevalências foram de 11%, 7% e 14%, respectivamente, e a incidência em 2016 foi de 5% e em 2017 de 14%. Os sorovares mais frequentes foram Cynopteri e Butembo em 2015, Cynopteri, Butembo e Hardjoprajitno em 2016, e Canicola e Butembo em 2017. Estes cães estão atuando como bio-indicadores da presença de Leptospira na região do estudo, incluindo sorovares zoonóticos, e contribuindo com a sua manutenção no ambiente. A soropositividade para sorovares protegidos pela vacina foi mais alta do que nos anos anteriores à imunização, enquanto para os sorovares não protegidos pela vacina diminuiu, demonstrando a importância da imunização para essa população de cães. Medidas de prevenção e controle para a leptospirose, como imunização e controle populacional canino, são recomendadas no local para inibir a transmissão do agente entre as populações de cães e humanos envolvidas.
ABSTRACT: Leptospirosis is a zoonotic disease caused by Leptospira and domestic dogs can act as host of some serovars. In order to analyze the transmission dynamics in a dog population, with and without immunization, a longitudinal study was carried out with a focus to evaluate antibody response and to identify serovars. Blood samples were collected in three consecutive years (2015 to 2017) from 331, 373 and 347 dogs respectively. The dog seroprevalence in each year was 11%, 7% and 14%, respectively, and the incidence in 2016 was 5% and in 2017, 14%. The most frequent serovars were Cynopteri and Butembo in 2015, Cynopteri, Butembo and Hardjoprajitno in 2016, and Canicola and Butembo in 2017. Dogs can play a role as sentinel animals and hosts of Leptospira serovars. The percentage of seropositive dogs due to vaccination was higher than the previous years without immunization and lower than in previous years for other serovars, which we interpret as evidence for the importance of immunization. These parameters associated with active canine population control are important for prevention and control of leptospirosis not only in dogs but alsoto inhibit the transmission between dogs and humans.
https://doi.org/10.1590/1678-5150-pvb-6390
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6.
Weight and body yield of selectively bred tambaqui (Colossoma macropomum) farmed in different environments
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MARCOS, REBECA
; CORRÊA FILHO, RUY A.C.
; ABREU, JANESSA S. DE
; SERAPHIM, GUILHERME N.
; SILVA, ANA C.C.
; FORNARI, DARCI C.
; RIBEIRO, RICARDO P.
; FERREIRA, YASMIN A.
; GAMA, KAMYLA F.S.
; POVH, JAYME A.
.
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Abstract The objective of this study was to evaluate the weight and body yield of two families of selectively bred tambaqui farmed in different environments. Two families (FA and FB) were reared in the municipalities (environments) of Santo Antônio de Leverger (MT) and Campo Grande (MS) for 431 days. Pre-bleeding weight, body yield, and the interaction effect between families and environments on these traits were investigated. No interaction effect between the evaluated families and environments was detected on the evaluated traits. Pre-bleeding weight did not differ significantly between the families in MT (FA: 2,421.7g; FB: 2,478.0g) or in MS (FA: 1,138.7g; FB: 1,389.8g), but the fish from MT had a higher (P<0.05) pre-bleeding weight than those farmed in MS. The visceral fat yield (considering the two environments) was higher (P<0.05) in FB family (3.8%) than in FA family (3.3%).Fish from MS showed higher (P<0.05) offal yield (10.6%) and visceral fat yield (3.9%) but a lower clean-trunk yield (70.6%) than the tambaqui farmed in MT (offal: 7.7%; visceral fat: 3.1%; and clean trunk: 72.6%). In conclusion, the MT environment provides higher pre-bleeding weight and clean-trunk yield and lower offal and visceral-fat yields than the MS environment.
https://doi.org/10.1590/0001-3765202020180675
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7.
Effects of Lippia sidoides Cham. (Verbenaceae) essential oils on the honey bees Apis mellifera (Apidae: Hymenoptera) foraging
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Pinheiro, Izabella M. C.
; S. Luz, João Henrique
; N. Souza, Luis Flávio
; S. Oliveira, Ana Cláudia S.
; Oliveira, Eugênio E.
; Aguiar, Raimundo Wagner S.
; Santos, Gil R.
; Ferreira, Talita P. S.
; A. C. Silveira-Tschoeke, Marcela Cristina
; Tschoeke, Paulo Henrique
.
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RESUMEN El uso de aceites esenciales de plantas há sido adoptado como menos peligroso para el medio ambiente y la salud humana que los insecticidas sintéticos utilizados para el control de insectos portadores de enfermedades. A pesar de ejercer actividades insecticidas contra varios insectos vectores de enfermedades, los impactos potenciales en los organismos no objetivo ejercidos por los aceites esenciales extraídos de Lippia sidoides (Cham.) no han recibido la atención adecuada. Evaluamos la susceptibilidad y los posibles cambios en las tasas de consumo de las abejas melíferas, Apis mellifera (L.), cuando se exponen a aceites esenciales extraídos de L. sidoides. Se expuso a las abejas recolectoras a jarabe de miel (50% v / v) que contenía aceite esencial de L. sidoides durante 5 h. Después de este período de exposición, las abejas recibieron jarabe de miel regular durante otro período de 19 h. Se utilizaron seis concentraciones de aceite essencial: 1.0, 1.5, 2.0, 2.5, 3.0 y 3.5 µL de aceite esencial / mL de jarabe, y se evaluó el consumo de jarabe y la mortalidad de las abejas en ambos períodos (5 y 24 h). Los resultados revelan que, independientemente de la concentración de aceite esencial, las abejas recolectoras se alimentaron significativamente menos de jarabe de miel que contenía aceite esencial de L. sidoides. Sin embargo, la alimentación con jarabe de miel que contiene aceites esenciales de L. sidoides no causó una mortalidad significativa en comparación con las abejas que no estuvieron expuestas a los aceites esenciales. Por lo tanto, los resultados demuestran que los aceites esenciales de L. sidoides exhibieron una selectividad adecuada contra las abejas melíferas.
ABSTRACT The use of plant essential oils has been adopted as less hazardous to the environment and human health than synthetic insecticides used for the control of insects that transmit diseases. Despite of exerting insecticidal activities against several insect disease vectors, the potential impacts on non-target organisms exerted by essential oils extracted from Lippia sidoides (Cham.) have not received adequate attention. Here, we evaluated the susceptibility and potential changes in consumption rates of honey bees, Apis mellifera (L.), when exposed to essential oils extracted from L. sidoides. Was exposed forager bees to honey syrup (50% v/v) containing L. sidoides essential oil for 5 h. After this exposure period, the bees received regular honey syrup for another 19 h period. Six essential oil concentrations was used, namely 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5 µL of essential oil/mL of syrup, and evaluated the syrup consumption and bees mortality in both periods (at the 5th and 24th h). The results reveal that independent of the essential oil concentration, the forager bees fed significantly less on L. sidoides essential oil-containing honey syrup. However, feeding on L. sidoides essential oil-containing honey syrup did not cause significant mortality when compared with bees that were not exposed to the essential oils. Thus, the results demonstrate that L. sidoides essential oils exhibited adequate selectivity against honey bees.
https://doi.org/10.22267/rcia.1936e.104
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8.
Inhibition of Zika Virus Replication by Synthetic Bis-Naphthoquinones
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Gonzaga, Daniel T. G.
; Gomes, Rafaela S. P.
; Marra, Roberta K. F.
; Silva, Fernando C. da
; Gomes, Max W. L.
; Ferreira, Davis F.
; Santos, Raissa M. A.
; Pinto, Ana M. V.
; Ratcliffe, Norman Arthur
; Cirne-Santos, Claudio C.
; Barros, Caroline S.
; Ferreira, Vitor F.
; Paixão, Izabel Christina N. P.
.
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Journal of the Brazilian Chemical Society
- Métricas do periódico
Zika virus (ZIKV) is a mosquito-borne pathogen which is a current global public health concern. There are currently no approved vaccines or antivirals against ZIKV infection. Taking into account that naphthoquinones have shown promising antiviral activity, the aim of this study was to describe the screening of two bis-naphthoquinones series against ZIKV. Twenty seven compounds were evaluated against ZIKV using Vero cells. The findings showed that among the compounds analyzed four were promising. Compound 3,3’-((2-nitrophenyl)methylene)bis(2-hydroxynaphthalene-1,4-dione) containing the nitro group at the ortho position showed the best selectivity index, followed by compound 3,3’-(4-chlorophenylmethylene)bis(naphthalene-1,2,4-triyl triacetate) with the chlorophenylmethylene radical. These results demonstrate that these bis-naphthoquinones are largely effective in inhibiting the replication of ZIKV.
https://doi.org/10.21577/0103-5053.20190071
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9.
Diagnostic criteria and prevalence of mild cognitive impairment in older adults living in the community: a systematic review and meta-analysis
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PESSOA, REBECA MENDES P.
; BOMFIM, ANA JULIA L.
; FERREIRA, BIANCA L. CAVALMORETTI
; CHAGAS, MARCOS HORTES N.
.
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Archives of Clinical Psychiatry (São Paulo)
- Métricas do periódico
Abstract Background Mild Cognitive Impairment (MCI) is a disorder in which the patient presents a cognitive decline, but without negative impact on the activities of daily living. Objective To carry out a systematic review of published studies that analyzed the prevalence of Mild Cognitive Impairment (MCI) in older adults living in the community, and the criteria used for the diagnosis of this disorder. Methods A search was carried out in May 2017 using the descriptors: “epidemiology” or “prevalence”, “mild cognitive impairment”, and “community” in the PubMed, PsycInfo, SciELO, Web of Science, and Scopus databases. Two independent researchers extracted and documented the data. We used a random effect model to calculate pooled prevalence of MCI for overall studies and for each subgroup divided by diagnostic criteria. Results We found initially 1996 articles, and we selected 35 studies. The prevalence of MCI in the selected studies ranged from 0.5% to 41.8%. The overall pooled prevalence of MCI was 17.3% (CI 95%, 13.8-20.8), with significant heterogeneity between estimates (I2 = 99.6%). Discussion The standardization of the diagnostic criteria for MCI, as well as the tests used in the cognitive evaluation, could allow the comparison between the studies and would be an important step in the researches of this area.
https://doi.org/10.1590/0101-60830000000197
2109 downloads
10.
Uncovering markers for downy mildew resistance in grapevine through mass spectrometry-based metabolomics
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Maia, Marisa
; Ferreira, António E. N.
; Marques, Ana P.
; Figueiredo, Joana
; Freire, Ana Ponces
; Cordeiro, Carlos
; Figueiredo, Andreia
; Silva, Marta Sousa
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O míldio é uma ameaça importante à indústria vitivinícola e o desenvolvimento de híbridos entre Vitis vinifera e Vitis spp. selvagens, resistentes à doença, é uma estratégia promissora no combate a esta doença. A descoberta de marcadores metabólicos é essencial. Neste trabalho pretendemos acelerar o processo de seleção das características de resistência ao míldio utilizando metabolómica baseada em espectrometria de massa de elevada resolução para a descoberta de marcadores de resistência. Comparámos a cultivar suscetível ‘Trincadeira’ com a mais resistente ‘Regent’. Ambas foram facilmente discriminadas com base no seu perfil metabólico, tendo sido encontrados vários picos exclusivos de cada cultivar.
Downy mildew is a major threat to the wine industry and the development of hybrids between Vitis vinifera and wild resistant Vitis species is a promising strategy to cope with this disease. The discovery of metabolic markers associated with grapevine resistance is paramount. In this work we aim at speeding up the assignment of innate resistance to downy mildew in grapevine cultivars by applying high-resolution mass-spectrometry- based untargeted metabolomics as a profiling and resistance marker discovery method. We compared the susceptible cultivar ‘Trincadeira’ with the more resistant one ‘Regent’. Both cultivars could be easily discriminated based on their metabolic profile and we found several peak features exclusive of each variety.
https://doi.org/10.19084/RCA.17066
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11.
Acaricidal effects of seven Brazilian plant extracts
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Teixeira Pinto, Zeneida
; Ferreira Carneiro, Juliana
; Carriço, César
; Leal Caetano, Rebecca
; dos Santos Baia Ferreira, Vítor
; Martins Mendonça, Paloma
; Rangel Berenger, Ana Luiza
; Figueiredo, Maria Raquel
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Resumen Esta investigación se llevó a cabo para evaluar los efectos de los extractos de Rheedia longifolia (Clusiaceae), Garcinia xanthochymus (Clusiaceae), Plumbago scandens (Plumbaginaceae) Hovenia dulcis (Rhamnaceae), Malpighia glabra (Malpighiaceae), Euphorbia tirucalli (Euphorbiaceae) y Nerium adelfa (Apocynaceae) sobre la tasa incubación de los huevos de Dermacentor (Anocentor) nitens y Ripicephalus sanguineus (Acari: Ixodidae) en concentraciones de 1.000 ppm. Los extractos de R. longifolia, H. dulcis, M. glabra y E. tirucalli retrasaron significativamente la incubación de los huevos de R. sanguineus en tres días, pero los grupos tratados con los extractos de G. xanthochymus y P. scandens eclosionaron después de 14 días. Para las garrapatas D. (A.) nitens, los extractos de H. dulcis y N. adelfa retrasaron la eclosión de los huevos durante tres días, sin embargo, la acción de los extractos de R. longifolia, G. xanthochymus, P. scandens y E. tirucalli causó un retraso mayor de siete días. Para los dos tipos de garrapatas, los huevos del grupo control tardaron un día para eclosionar. Los extractos H. dulcis y M. glabra fueron eficaces in vitro en huevos de R. sanguineus (89 %) y D. (A.) nitens (100 %) y se pueden considerar como candidatos potenciales para el control biológico de estas garrapatas.
Abstract This investigation was carried out to evaluate the effects of the plant extracts of Rheedia longifolia (Clusiaceae), Garcinia xanthochymus (Clusiaceae), Plumbago scandens (Plumbaginaceae), Hovenia dulcis (Rhamnaceae), Malpighia glabra (Malpighiaceae), Euphorbia tirucalli (Euphorbiaceae) and Nerium adelfa (Apocynaceae) on eggs of Dermacentor (Anocentor) nitens and Ripicephalus sanguineus (Acari: Ixodidae) at concentrations of 1,000 ppm. The extracts had a significant effect on the hatching rate of eggs. The extracts of R. longifolia, H. dulcis, M. glabra and E. tirucalli delayed the hatching of R. sanguineus eggs by three days; however, the group treated with the extracts of G. xanthochymus and P. scandens did not hatch until day fourteen. For the tick D. (A.) nitens, extracts of H. dulcis and N. oleander delayed egg hatching by three days; however, the action of extracts from R. longifolia, G. xanthochymus, P. scandens and E. tirucalli caused a delay of seven days. For the control groups of both species, eggs hatched in one day. H. dulcis and M. glabra were effective in vitro on eggs of R. sanguineus and D. (A.) nitens (89 and 100 %, respectively), and can be considered to be potential candidates for the biocontrol of those ticks.
https://doi.org/10.25100/socolen.v44i1.6541
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12.
Diffuse alveolar hemorrhage in childhoodonset systemic lupus erythematosus: a severe disease flare with serious outcome
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Blay, Gabriela
; Rodrigues, Joaquim C.
; Ferreira, Juliana C. O.
; Leal, Gabriela N.
; Gormezano, Natali W.
; Novak, Glaucia V.
; Pereira, Rosa M. R.
; Terreri, Maria T.
; Magalhães, Claudia S.
; Molinari, Beatriz C.
; Sakamoto, Ana P.
; Aikawa, Nadia E.
; Campos, Lucia M. A.
; Fernandes, Taciana A. P.
; Clemente, Gleice
; Peracchi, Octavio A. B.
; Bugni, Vanessa
; Marini, Roberto
; Sacchetti, Silvana B.
; Carvalho, Luciana M.
; Fraga, Melissa M.
; Castro, Tânia C. M.
; Ramos, Valéria C.
; Bonfá, Eloisa
; Silva, Clovis A.
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Abstract Objective: To evaluate prevalence, clinical manifestations, laboratory abnormalities and treatment in a multicenter cohort study including 847 childhood-onset systemic lupus erythematosus (cSLE) patients with and without diffuse alveolar hemorrhage (DAH), as well as concomitant parameters of severity. Methods: DAH was defined as the presence of at least three respiratory symptoms/signs associated with diffuse interstitial/alveolar infiltrates on chest x-ray or high-resolution computer tomography and sudden drop in hemoglobin levels. Statistical analysis was performed using Bonferroni correction (p < 0.0022). Results: DAH was observed in 19/847 (2.2%) cSLE patients. Cough/dyspnea/tachycardia/hypoxemia occurred in all cSLE patients with DAH. Concomitant parameters of severity observed were: mechanical ventilation in 14/19 (74%), hemoptysis 12/19 (63%), macrophage activation syndrome 2/19 (10%) and death 9/19 (47%). Further analysis of cSLE patients at DAH diagnosis compared to 76 cSLE control patients without DAH with same disease duration [3 (1–151) vs. 4 (1–151) months, p = 0.335], showed higher frequencies of constitutional involvement (74% vs. 10%, p < 0.0001), serositis (63% vs. 6%, p < 0.0001) and sepsis (53% vs. 9%, p < 0.0001) in the DAH group. The median of disease activity score(SLEDAI-2 K) was significantly higher in cSLE patients with DAH [18 (5–40) vs. 6 (0–44), p < 0.0001]. The frequencies of thrombocytopenia (53% vs. 12%, p < 0.0001), intravenous methylprednisolone (95% vs. 16%, p < 0.0001) and intravenous cyclophosphamide (47% vs. 8%, p < 0.0001) were also significantly higher in DAH patients. Conclusions: This was the first study to demonstrate that DAH, although not a disease activity score descriptor, occurred in the context of significant moderate/severe cSLE flare. Importantly, we identified that this condition was associated with serious disease flare complicated by sepsis with high mortality rate.
https://doi.org/10.1186/s42358-018-0038-4
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Growing knowledge: an overview of Seed Plant diversity in Brazil
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Zappi, Daniela C.
; Filardi, Fabiana L. Ranzato
; Leitman, Paula
; Souza, Vinícius C.
; Walter, Bruno M.T.
; Pirani, José R.
; Morim, Marli P.
; Queiroz, Luciano P.
; Cavalcanti, Taciana B.
; Mansano, Vidal F.
; Forzza, Rafaela C.
; Abreu, Maria C.
; Acevedo-Rodríguez, Pedro
; Agra, Maria F.
; Almeida Jr., Eduardo B.
; Almeida, Gracineide S.S.
; Almeida, Rafael F.
; Alves, Flávio M.
; Alves, Marccus
; Alves-Araujo, Anderson
; Amaral, Maria C.E.
; Amorim, André M.
; Amorim, Bruno
; Andrade, Ivanilza M.
; Andreata, Regina H.P.
; Andrino, Caroline O.
; Anunciação, Elisete A.
; Aona, Lidyanne Y.S.
; Aranguren, Yani
; Aranha Filho, João L.M.
; Araújo, Andrea O.
; Araújo, Ariclenes A.M.
; Araújo, Diogo
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; Azevedo, Cecilia O.
; Baitello, João B.
; Barberena, Felipe F.V.A.
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; Berry, Paul E.
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; Braga, João M.A.
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; Castello, Ana C.D.
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Resumo Um levantamento atualizado das plantas com sementes e análises relevantes acerca desta biodiversidade são apresentados. Este trabalho se iniciou em 2010 com a publicação do Catálogo de Plantas e Fungos e, desde então vem sendo atualizado por mais de 430 especialistas trabalhando online. O Brasil abriga atualmente 32.086 espécies nativas de Angiospermas e 23 espécies nativas de Gimnospermas e estes novos dados mostram um aumento de 3% da riqueza em relação a 2010. A Amazônia é o Domínio Fitogeográfico com o maior número de espécies de Gimnospermas, enquanto que a Floresta Atlântica possui a maior riqueza de Angiospermas. Houve um crescimento considerável no número de espécies e nas taxas de endemismo para a maioria dos Domínios (Caatinga, Cerrado, Floresta Atlântica, Pampa e Pantanal), com exceção da Amazônia que apresentou uma diminuição de 2,5% de endemicidade. Entretanto, a maior parte das plantas com sementes que ocorrem no Brasil (57,4%) é endêmica deste território. A proporção de formas de vida varia de acordo com os diferentes Domínios: árvores são mais expressivas na Amazônia e Floresta Atlântica do que nos outros biomas, ervas são dominantes no Pampa e as lianas apresentam riqueza expressiva na Amazônia, Floresta Atlântica e Pantanal. Este trabalho não só quantifica a biodiversidade brasileira, mas também indica as lacunas de conhecimento e o desafio a ser enfrentado para a conservação desta flora.
Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora.
https://doi.org/10.1590/2175-7860201566411
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14.
Caulerpin as a potential antiviral drug against herpes simplex virus type 1
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Macedo, Nathália Regina Porto Vieira
; Ribeiro, Michele S.
; Villaça, Roberto C.
; Ferreira, Wilton
; Pinto, Ana Maria
; Teixeira, Valéria L.
; Cirne-Santos, Claudio
; Paixão, Izabel C. N. P.
; Giongo, Viveca
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Revista Brasileira de Farmacognosia
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About 80% of the human adult population is infected with HSV-1. Although there are many anti-HSV-1 drugs available (acyclovir, ganciclovir, valaciclovir, foscarnet), their continuous use promotes the selection of resistant strains, mainly in ACV patients. In addition to resistance, the drugs also have toxicity, particularly when administration is prolonged. The study of new molecules isolated from green algae with potential antiviral activity represents a good opportunity for the development of antiviral drugs. Caulerpin, the major product from the marine algae Caulerpa Lamouroux (Caulerpales), is known for its biological activities such as antioxidant, antifungal, acetylcholinesterase inhibitor (AChE) and antibacterial activity. In this work, we show that caulerpin could be an alternative to acyclovir as an anti-HSV-1 drug that inhibits the alpha and beta phases of the replication cycle.
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15.
Caracterização do perfil de deposição e do diâmetro de gotas e otimização do espaçamento entre bicos na barra de pulverização
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A escolha e o uso adequado de pontas de pulverização são essenciais para a correta aplicação de produtos fitossanitários, sendo, portanto, indispensável o conhecimento de suas características. Este trabalho teve o objetivo de caracterizar o perfil de distribuição e o diâmetro de gotas, oferecendo dados para otimizar o espaçamento entre bicos na barra de pulverização. Foram avaliados os perfis de distribuição da ponta de jato plano Teejet XR 110015 VS, a 0,50 m da altura da mesa de deposição, nas pressões de 200 e 300 kPa, e o diâmetro das gotas pelo método de difração de raios laser. As distâncias máximas foram de 0,85 m, calculadas para um coeficiente de variação (C.V.) aceitável para as pressões de 200 e 300 kPa , com os respectivos valores de 9,52 e 9,58%. A distância ótima foi de aproximadamente 0,70 m, para C.V. em torno de 5%. Comparando as pressões, houve diferença significativa para DV0,1 e DV0,5, não havendo diferença para o DV0,9. Embora o aumento da pressão tenha provocado diminuição do tamanho das gotas, não houve diferença significativa de uniformidade entre as duas pressões de trabalho avaliadas. Concluiu-se que o espaçamento máximo entre bicos na barra não deverá ser maior que 0,85 m e que o DV0,5 diminui com o aumento da pressão de 200 para 300 kPa, porém sem alteração significativa da uniformidade de diâmetro de gota.
The choice and correct use of nozzles are essential for the best agrochemical deposition, which is indispensable. The aim of this work was characterize the spray pattern and the droplet diameter offering information to optimize the nozzles spaces in spray boom. Deposition pattern of flat fan nozzles Teejet XR 110015 VS were evaluated, in a patternator, with the nozzle placed 0.50 m above patternator under pressures of 200 and 300 kPa, and the droplet diameter by the laser diffraction method. The maximum distance calculated for an acceptable coefficient of variation (C.V.) was of 0.85 m for the pressures of 200 and 300 kPa, with values of 9.52 and 9.58%, respectively. The optimum distance was around of 0.70 m and to C.V. around 5%. Comparing pressures, it had significant difference for DV0.1 and DV0.5 but not for DV0.9. However the increase on the pressure resulted in a reduction of droplet size there was no significant effect of span due the pressures evaluated. It was concluded that the maximum spacing between nozzles would not be over 0.85 m and the DV0.5 decreased with the increase of pressure from 200 to 300 kPa, but without significance changes of span to droplet sizes.
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