Resumen: El objetivo de este trabajo fue evaluar los factores explicativos de la respuesta inmune humoral en adultos mayores de establecimientos de estancia prolongada de Buenos Aires, Argentina, hasta 180 días post vacunación. Se utilizó un diseño de cohorte abierta, prospectiva, multicéntrica, con voluntarios que recibieron dos dosis de vacunas Sputnik V, Sinopharm o AZD1222. Se analizaron muestras de plasma en los tiempos 0, 21 días post primera dosis, 21 días post segunda dosis, 120 y 180 días post primera dosis. Se ajustaron modelos lineales marginales y aditivos generalizados mixtos para evaluar el comportamiento de la concentración de anticuerpos IgG anti-Spike en el tiempo según grupo de exposición (naïve/no-naïve) y vacuna. Las covariables analizadas fueron: ocurrencia de brote de COVID-19 en establecimientos de estancia prolongada y comorbilidades. Se incluyeron en el análisis 773 participantes con una mediana de edad de 83 años (RIQ: 76-89). Al final del estudio, los niveles de anticuerpos del grupo naïve: Sinopharm fueron significativamente menores que el resto de los grupos (p < 0,05); los del no-naïve: Sinopharm resultaron similares a los naïve que recibieron AZD1222 (p = 0,945) o Sputnik V (p = 1). Los participantes expuestos a brotes en establecimientos de estancia prolongada presentaron niveles de anticuerpos significativamente mayores, independientemente del grupo de exposición y la vacuna (p < 0,001). Concluimos que la exposición previa a COVID-19, el tipo de vacuna y la pertenencia a un establecimiento de estancia prolongada con antecedente de brote son factores a considerar frente a futuros eventos epidémicos con dinámicas de transmisión y mecanismos inmunológicos similares al COVID-19, en poblaciones similares a la analizada en este trabajo.

Resumo: Este estudo teve como objetivo avaliar os fatores explicativos da resposta imune humoral em idosos em instituições de longa permanência em Buenos Aires, Argentina, até 180 dias após a vacinação. Foi realizado um estudo de coorte aberto, prospectivo e multicêntrico, com voluntários que receberam duas doses das vacinas Sputnik V, Sinopharm ou AZD1222. As amostras de plasma foram analisadas nos tempos 0, 21 dias após a primeira dose, 21 dias após a segunda dose, 120 e 180 dias após a primeira dose. Os modelos lineares marginais e os aditivos generalizados mistos foram ajustados para determinar o comportamento da concentração de anticorpos IgG anti-Spike ao longo do tempo de acordo com o grupo de exposição (naïve/no-naïve) e vacina. As covariáveis analisadas foram ocorrência de pico de COVID-19 nas instituições de longa permanência e comorbidades. Foram incluídos 773 participantes, com média de idade de 83 anos (IIQ: 76-89). Os resultados apontaram níveis de anticorpos do grupo naïve: Sinopharm significativamente mais baixos do que os outros grupos (p < 0,05); e as variáveis do grupo no-naïve: Sinopharm foram semelhantes à do grupo naïve que recebeu AZD1222 (p = 0,945) ou Sputnik V (p = 1). Os participantes expostos a picos nas instituições de longa permanência apresentaram níveis de anticorpos significativamente maiores, independentemente do grupo de exposição e da vacina (p < 0,001). Conclui-se que a exposição prévia à COVID-19, tipo de vacina e adesão a uma instituição de longa permanência com histórico de pico são fatores a serem considerados em futuros eventos epidêmicos com dinâmica de transmissão e mecanismos imunológicos semelhantes à COVID-19, em populações semelhantes à analisada neste trabalho.

Abstract: This study evaluated the explanatory factors of humoral immune response in older adults admitted to long-term care institutions in Buenos Aires, Argentina, up to 180 days after vaccination. An open-label, prospective, multicenter cohort study was conducted with volunteers who received two doses of the Sputnik V, Sinopharm, or AZD1222 vaccines. Plasma samples were analyzed at 0 and 21 days after the first dose, 21 days after the second dose, and 120 and 180 days after the first dose. Marginal linear models and generalized additives mixed models were adjusted to determine the behavior of anti-spike IgG antibody concentration over time according to exposure group (naïve/no-naïve) and vaccine. Occurrence of an outbreak of COVID-19 in long-term care institutions and comorbidities were the covariates analyzed. A total of 773 participants were included, with a mean age of 83 years (IQR: 76-89). Results showed that antibody levels in the naïve: Sinopharm group were significantly lower to the other groups (p < 0.05). Antibody levels in the no-naïve: Sinopharm group were similar to those in the naïve group who received AZD1222 (p = 0.945) or Sputnik V (p = 1). Participants exposed to outbreaks in long-term care institutions had significantly higher antibody levels, regardless of exposure group and vaccine (p < 0.001). In conclusion, previous exposure to COVID-19, type of vaccine, and admittance into a long-term care institution with a history of outbreaks are factors to be considered in future epidemic events with transmission dynamics and immunological mechanisms similar to COVID-19, in populations similar to the one analyzed.

Abstract Radulaceae is one of the most isolated lineages of leafy liverworts. This family contains three genera and between 200 and 350 extant species worldwide. Most species belong to the genus Radula, which is subdivided into five subgenera and remains taxonomically challenging. In the framework of an integrative taxonomic revision of Radulaceae in tropical America, we are paying special attention to understudied features that may be taxonomically informative, such as spores. Here, we perform the first palynological evaluation of sixteen species of Radulaceae. The spores were processed by standard palynological techniques and described using light and electron microscopy. The spores of Radulaceae are isomorphic monads, apolar in species of the genus Radula and cryptopolar in Cladoradula, usually small to medium-sized, rarely large, inaperturate, with a circular to slightly elongated outline. The spore surface is ornamented with rounded elements, here called Granulate-type ornamentation, or with elongated elements, called Echinate-type ornamentation, and shows differences in each species. The palynological data, especially spore ornamentation, can make an important contribution to Radulaceae taxonomy for separating species or groups of species. The groups found here, however, do not fully correspond to generic and infrageneric circumscriptions as supported by molecular-phylogenetic evidence. liverworts 20 35 worldwide challenging America informative Here microscopy monads Cladoradula mediumsized, mediumsized medium sized, sized medium-sized large inaperturate outline elements Granulatetype Granulate type ornamentation Echinatetype Echinate data however molecularphylogenetic molecular phylogenetic evidence 2 3

RESUMO A madeira de Paulownia tomentosa Steud. tem potencial para o desenvolvimento de produtos com alto valor agregado. A madeira é leve e macia, com excelentes propriedades de usinagem e acabamento, e por isso é usada para fabricação de materiais compósitos, chapas de madeira, móveis, papel e instrumentos musicais. Assim, o objetivo deste estudo foi avaliar as características físicas e químicas da madeira de P. tomentosa, a fim de recomendar seu uso para a obtenção e geração de bioprodutos. Cinco árvores, com treze anos de idade, foram abatidas para retirada de discos em diferentes alturas, os quais foram processados em cunhas e serragem. Para a determinação da densidade básica, foi empregada a metodologia descrita na norma NBR 11941. Os teores de extrativos totais, ligninas e holocelulose foram determinados segundo as normas da Technical Association of the Pulp and Paper industry - TAPPI. Análises de espectrometria no infravermelho, de química imediata (materiais voláteis, carbono fixo e cinzas) e termogravimétrica da madeira também foram realizadas. Os resultados obtidos para a madeira de P. tomentosa foram: densidade básica de 0,269 g/cm3, 17,3% de extrativos totais, 17,1% da lignina Klason, 1,15 de relação S/G e teores de holocelulose de 67,7%. A análise química imediata da madeira resultou em 86,5% de materiais voláteis, 12,9% de carbono fixo e 0,6 % de cinzas. A baixa densidade básica da madeira de P. tomentosa, bem como o baixo teor de lignina e de carbono fixo da madeira são características desfavoráveis do ponto de vista energético. Por outro lado, devido ao alto teor de holocelulose e baixo teor de lignina, a madeira de P. tomentosa se mostra promissora para a produção de bioprodutos de base celulósica, como a nanocelulose. Steud agregado macia acabamento compósitos móveis musicais Assim P árvores idade alturas serragem 11941 totais TAPPI infravermelho voláteis cinzas realizadas 0269 0 269 0,26 gcm3 gcm g cm3 cm g/cm3 173 17 3 17,3 171 1 17,1 Klason 115 15 1,1 SG S G 677 67 7 67,7% 865 86 5 86,5 129 12 9 12,9 06 6 0, energético lado celulósica nanocelulose 1194 026 26 0,2 g/cm 17, 11 1, 67,7 8 86, 12, 119 02 2 67,

ABSTRACT The wood of Paulownia tomentosa Steud. has the potential to develop products with high-added value. The wood is lightweight and soft, with excellent machining and finishing properties, and is therefore used to produce composite materials, wood panels, furniture, paper, and musical instruments. Thus, the objective of this study was to evaluate the physical and chemical characteristics of Paulownia tomentosa wood in order to recommend its use for the production and generation of bioproducts. Five trees, thirteen years old, were harvested to obtain discs at different heights, which were then processed into wedges and sawdust. The methodology described in standard NBR 11941 was employed to determine the basic density. The total extractive, lignin, and holocellulose levels were determined according to the standards of the Technical Association of the Pulp and Paper Industry. Infrared spectrometry, immediate chemistry analysis (volatile materials, fixed carbon content, and ash content), and thermogravimetric analysis of the wood were also performed. The results obtained for Paulownia tomentosa wood were as follows: a basic density of 0.269 g/cm3, 17.3% of total extractives, 17.1% of Klason lignin, an S/G ratio of 1.15, and holocellulose content of 67.7%. The immediate chemical analysis of the wood resulted in 86.5% of volatile matter, 12.9% of fixed carbon, and 0.6% of ash content. The low basic density of Paulownia tomentosa wood and the low lignin and fixed carbon content are unfavorable characteristics from an energetic point of view. Conversely, due to the high holocellulose and low lignin content, Paulownia tomentosa wood shows promise for producing cellulose-based bioproducts, such as nanocellulose. Steud highadded added value soft properties materials panels furniture paper instruments Thus bioproducts trees old heights sawdust 1194 extractive Industry spectrometry , content) performed follows 0269 0 269 0.26 gcm3 gcm g cm3 cm g/cm3 173 17 3 17.3 extractives 171 1 17.1 SG S G 115 15 1.15 677 67 7 67.7% 865 86 5 86.5 matter 129 12 9 12.9 06 6 0.6 view Conversely cellulosebased cellulose based nanocellulose 119 026 26 0.2 g/cm 17. 11 1.1 67.7 8 86. 12. 0. 02 2 1. 67.

Resumo: Este estudo teve como objetivo avaliar os fatores explicativos da resposta imune humoral em idosos em instituições de longa permanência em Buenos Aires, Argentina, até 180 dias após a vacinação. Foi realizado um estudo de coorte aberto, prospectivo e multicêntrico, com voluntários que receberam duas doses das vacinas Sputnik V, Sinopharm ou AZD1222. As amostras de plasma foram analisadas nos tempos 0, 21 dias após a primeira dose, 21 dias após a segunda dose, 120 e 180 dias após a primeira dose. Os modelos lineares marginais e os aditivos generalizados mistos foram ajustados para determinar o comportamento da concentração de anticorpos IgG anti-Spike ao longo do tempo de acordo com o grupo de exposição (naïve/no-naïve) e vacina. As covariáveis analisadas foram ocorrência de pico de COVID-19 nas instituições de longa permanência e comorbidades. Foram incluídos 773 participantes, com média de idade de 83 anos (IIQ: 76-89). Os resultados apontaram níveis de anticorpos do grupo naïve: Sinopharm significativamente mais baixos do que os outros grupos (p < 0,05); e as variáveis do grupo no-naïve: Sinopharm foram semelhantes à do grupo naïve que recebeu AZD1222 (p = 0,945) ou Sputnik V (p = 1). Os participantes expostos a picos nas instituições de longa permanência apresentaram níveis de anticorpos significativamente maiores, independentemente do grupo de exposição e da vacina (p < 0,001). Conclui-se que a exposição prévia à COVID-19, tipo de vacina e adesão a uma instituição de longa permanência com histórico de pico são fatores a serem considerados em futuros eventos epidêmicos com dinâmica de transmissão e mecanismos imunológicos semelhantes à COVID-19, em populações semelhantes à analisada neste trabalho. Resumo Aires Argentina 18 vacinação aberto multicêntrico AZD 0 2 dose 12 antiSpike anti Spike naïve/nonaïve naïvenonaïve naïve/no no (naïve/no-naïve COVID19 COVID 19 COVID-1 comorbidades 77 8 IIQ (IIQ 7689. 7689 76 89 . 76-89) p 0,05 005 05 0,05) nonaïve no-naïve AZD122 0,945 0945 945 1. 1 1) maiores 0,001. 0001 0,001 001 0,001) Concluise Conclui se COVID19, 19, trabalho naïveno COVID1 COVID- 7 768 76-89 0,0 00 AZD12 0,94 094 94 000 0,00 76-8 AZD1 0,9 09 9 76-

Abstract: This study evaluated the explanatory factors of humoral immune response in older adults admitted to long-term care institutions in Buenos Aires, Argentina, up to 180 days after vaccination. An open-label, prospective, multicenter cohort study was conducted with volunteers who received two doses of the Sputnik V, Sinopharm, or AZD1222 vaccines. Plasma samples were analyzed at 0 and 21 days after the first dose, 21 days after the second dose, and 120 and 180 days after the first dose. Marginal linear models and generalized additives mixed models were adjusted to determine the behavior of anti-spike IgG antibody concentration over time according to exposure group (naïve/no-naïve) and vaccine. Occurrence of an outbreak of COVID-19 in long-term care institutions and comorbidities were the covariates analyzed. A total of 773 participants were included, with a mean age of 83 years (IQR: 76-89). Results showed that antibody levels in the naïve: Sinopharm group were significantly lower to the other groups (p < 0.05). Antibody levels in the no-naïve: Sinopharm group were similar to those in the naïve group who received AZD1222 (p = 0.945) or Sputnik V (p = 1). Participants exposed to outbreaks in long-term care institutions had significantly higher antibody levels, regardless of exposure group and vaccine (p < 0.001). In conclusion, previous exposure to COVID-19, type of vaccine, and admittance into a long-term care institution with a history of outbreaks are factors to be considered in future epidemic events with transmission dynamics and immunological mechanisms similar to COVID-19, in populations similar to the one analyzed. Abstract longterm long term Aires Argentina 18 vaccination openlabel, openlabel open label, label open-label prospective AZD AZD122 vaccines 2 dose 12 antispike anti spike naïve/nonaïve naïvenonaïve naïve/no no (naïve/no-naïve COVID19 COVID 19 COVID-1 77 included 8 IQR (IQR 7689. 7689 76 89 . 76-89) p 0.05. 005 0.05 05 0.05) nonaïve no-naïve 0.945 0945 945 1. 1 1) 0.001. 0001 0.001 001 0.001) conclusion COVID19, 19, AZD12 naïveno COVID1 COVID- 7 768 76-89 00 0.0 0.94 094 94 000 0.00 AZD1 76-8 0. 0.9 09 9 76-

Resumen: El objetivo de este trabajo fue evaluar los factores explicativos de la respuesta inmune humoral en adultos mayores de establecimientos de estancia prolongada de Buenos Aires, Argentina, hasta 180 días post vacunación. Se utilizó un diseño de cohorte abierta, prospectiva, multicéntrica, con voluntarios que recibieron dos dosis de vacunas Sputnik V, Sinopharm o AZD1222. Se analizaron muestras de plasma en los tiempos 0, 21 días post primera dosis, 21 días post segunda dosis, 120 y 180 días post primera dosis. Se ajustaron modelos lineales marginales y aditivos generalizados mixtos para evaluar el comportamiento de la concentración de anticuerpos IgG anti-Spike en el tiempo según grupo de exposición (naïve/no-naïve) y vacuna. Las covariables analizadas fueron: ocurrencia de brote de COVID-19 en establecimientos de estancia prolongada y comorbilidades. Se incluyeron en el análisis 773 participantes con una mediana de edad de 83 años (RIQ: 76-89). Al final del estudio, los niveles de anticuerpos del grupo naïve: Sinopharm fueron significativamente menores que el resto de los grupos (p < 0,05); los del no-naïve: Sinopharm resultaron similares a los naïve que recibieron AZD1222 (p = 0,945) o Sputnik V (p = 1). Los participantes expuestos a brotes en establecimientos de estancia prolongada presentaron niveles de anticuerpos significativamente mayores, independientemente del grupo de exposición y la vacuna (p < 0,001). Concluimos que la exposición previa a COVID-19, el tipo de vacuna y la pertenencia a un establecimiento de estancia prolongada con antecedente de brote son factores a considerar frente a futuros eventos epidémicos con dinámicas de transmisión y mecanismos inmunológicos similares al COVID-19, en poblaciones similares a la analizada en este trabajo. Resumen Aires Argentina 18 vacunación abierta prospectiva multicéntrica AZD 0 2 12 antiSpike anti Spike naïve/nonaïve naïvenonaïve naïve/no no (naïve/no-naïve COVID19 COVID 19 COVID-1 comorbilidades 77 8 RIQ (RIQ 7689. 7689 76 89 . 76-89) estudio p 0,05 005 05 0,05) nonaïve no-naïve AZD122 0,945 0945 945 1. 1 1) 0,001. 0001 0,001 001 0,001) COVID19, 19, naïveno COVID1 COVID- 7 768 76-89 0,0 00 AZD12 0,94 094 94 000 0,00 76-8 AZD1 0,9 09 9 76-

Resumo Fundamento A fibrilação atrial (FA) é a arritmia cardíaca mais prevalente e sua apresentação difere de acordo com a idade e o sexo. Estudos recentes revelaram diferenças na FA entre vários grupos demográficos, incluindo a população latino-americana. Objetivos Melhor compreender as possíveis disparidades na prevalência da FA e nas estratégias de tratamento na população brasileira por meio de dados de um registro prospectivo multicêntrico de grande escala. Métodos O registro de FA da Rede D’Or é um estudo observacional prospectivo multicêntrico que incluiu pacientes com idade ≥ 18 anos com FA atendidos no pronto-socorro de 32 hospitais terciários no Brasil. Os pacientes foram caracterizados de acordo com o sexo e outras características basais e classificados de acordo com o uso prévio de anticoagulantes. Foi analisada a falta de uso de anticoagulantes em pacientes com indicações prévias. A significância estatística foi estabelecida em 5%. Resultados Os dados do estudo foram provenientes de um total de 1.955 pacientes inscritos. O sexo masculino foi mais prevalente e os homens eram mais jovens que as mulheres. Devido ao aumento da prevalência de episódios anteriores de FA e a um escore CHA2DS2-VASc mais elevado, mais mulheres tiveram indicação de terapia anticoagulante; no entanto, uma proporção significativa não estava recebendo esse tratamento. Dos 29 óbitos intra-hospitalares, 15 pacientes tinham indicação prévia para anticoagulação, mas apenas 3 estavam em uso de anticoagulantes. Conclusão O presente estudo revelou diferenças relacionadas ao sexo na população brasileira de pacientes com FA que são consistentes com tendências em países de alta renda. A promoção de uma melhor implementação de terapias anticoagulantes e antitrombóticas para reduzir o risco de óbito e eventos tromboembólicos entre mulheres com FA no Brasil é crucial. (FA demográficos latinoamericana. latinoamericana latino americana. americana latino-americana escala DOr D Or 1 prontosocorro pronto socorro prévias 5 5% 1955 955 1.95 inscritos CHA2DS2VASc CHADSVASc CHA2DS2 VASc CHA DS elevado anticoagulante entanto 2 intrahospitalares, intrahospitalares intra hospitalares, hospitalares intra-hospitalares anticoagulação renda crucial 195 95 1.9 CHADS CHA2DS 19 9 1.

Abstract Background Atrial fibrillation (AF) is the most prevalent cardiac arrhythmia, and its presentation differs according to age and sex. Recent studies have revealed differences in AF among various demographic groups, including the Latin American population. Objectives To better understand potential disparities in AF prevalence and treatment strategies in the Brazilian population through data from a large multicentric prospective registry. Methods The Rede D’Or AF registry is a multicenter prospective observational study including patients aged ≥ 18 years with AF who were seen in the emergency department of 32 tertiary hospitals in Brazil. Patients were characterized according to sex and other baseline characteristics and were classified according to previous anticoagulant use. The lack of anticoagulant use in patients with previous indications was analyzed. Statistical significance was set at 5%. Results The study data were from a total of 1955 patients enrolled. Male sex was more prevalent, and men were younger than the women. Due to an increased prevalence of previous AF episode and a higher CHA2DS2-VASc score, more women had indications for anticoagulant therapy; however, a significant proportion was not receiving this treatment. From 29 in-hospital deaths, 15 patients had previous indication for anticoagulation, but only 3 were using anticoagulants. Conclusion This study revealed sex-related differences in the Brazilian population of patients with AF that are consistent with trends in high-income countries. The promotion of better implementation of anticoagulant and antithrombotic therapies to reduce the risk of death and thromboembolic events among women with AF in Brazil is crucial. (AF arrhythmia groups DOr D Or 1 analyzed 5 5% 195 enrolled CHA2DS2VASc CHADSVASc CHA2DS2 VASc CHA DS score therapy however 2 inhospital hospital deaths anticoagulation anticoagulants sexrelated related highincome high income countries crucial 19 CHADS CHA2DS

RESUMO Plantações de café instaladas em altitudes elevadas e próximas a áreas florestais têm sido altamente infestadas por Anredera cordifolia. O objetivo deste estudo foi avaliar a eficácia de diferentes tratamentos herbicidas pré e pós-emergência sobre A. cordifolia após roçada mecânica. Para tanto, foi conduzido um experimento de campo em uma lavoura de café com infestação natural de A. cordifolia em um delineamento inteiramente casualizado com esquema de parcelas subdivididas com quatro repetições, sendo a parcela principal os tratamentos com aplicação de herbicida e a subparcela os dias após a aplicação inicial (DAI). Os tratamentos foram compostos por: saflufenacil + glifosato (70 + 960 g i. a. ha-1); clorimuron + glifosato (80 + 960 g i. a. ha-1); metsulfuron + glifosato (6 + 960 g i. a. ha-1); flumioxazin + glyphosate (25 + 960 g i. a. ha-1) e glifosato (960 g i. a. ha-1); com uma aplicação sequencial de: glifosato (960 g i. a. ha-1); (6) glifosato + indaziflam (960 g i. a. ha-1); e indaziflam (75 g i. a. ha-1), além de uma testemunha sem aplicação de herbicida. O manejo integrado é fundamental para o controle adequado de A. cordifolia, devido ao seu desenvolvimento vegetativo agressivo. O controle mecânico, seguido da aplicação dos tratamentos flumioxazin + glyphosate e metsulfuron + glyphosate na primeira aplicação e indaziflam sequencial mostrou-se eficaz. O controle dessa planta daninha deve ser baseado na remoção de seus resíduos vegetais do campo para reduzir a rebrota e a germinação de tubérculos aéreos. pósemergência pós emergência A mecânica tanto repetições DAI. DAI . (DAI) 70 (7 96 i ha1 ha 1 80 (8 6 ( 25 (2 ha-1 (96 75 ha1, , agressivo mecânico mostrouse mostrou se eficaz aéreos (DAI 7 9 8 2 ha- (9

ABSTRACT Coffee plantations installed at high altitudes and near forested areas have been highly infested with Anredera cordifolia. The objective of this work was to evaluate the effectiveness of different pre- and post-emergence herbicide treatments on A. cordifolia after mechanical mowing. A field experiment was carried out in a coffee plantation with natural infestation of A. cordifolia in a completely randomized design with a split-plot scheme and four replicates, in which the main plot an herbicides application and the subplot was the days after the initial application (DAI). The treatments were as follows: saflufenacil + glyphosate (70 + 960 g a.i. ha-1); chlorimuron + glyphosate (80 + 960 g a.i. ha-1); metsulfuron + glyphosate (6 + 960 g a.i. ha-1); flumioxazin + glyphosate (25 + 960 g a.i. ha-1), and glyphosate (960 g a.i. ha-1); with sequential application of glyphosate (960 g a.i. ha-1); glyphosate + indaziflam (960 + 75 g a.i. ha-1); indaziflam (75 g a.i. ha-1); and a control without herbicide application. Mechanical control, followed by the application of the treatments flumioxazin + glyphosate and metsulfuron + glyphosate in the first application and sequential application of indaziflam, proved to be effective. Control of this weed should be based on the removal of its plant residues from the field to reduce the regrowth and germination of aerial tubers. pre postemergence post emergence mowing splitplot split replicates DAI. DAI . (DAI) follows 70 (7 96 ai i a.i ha1 ha 1 ha-1) 80 (8 6 ( 25 (2 ha1, , (96 7 effective tubers (DAI 9 ha-1 8 2 (9 ha-

This work describes a green synthesis, the characterization, and biological evaluation of silver nanoparticles (AgNPs). The AgNPs suspension was synthesized using aqueous leaf extract of Eucalyptus grandis, which presented a characteristic band at 407 nm in the UV-Vis spectrum. The AgNPs presented a spherical shape and size of 9.7 ± 0.3 nm. The nanoparticles were stable over a month, indicating that E. grandis’ extract is suitable for their preparation and stabilization. The X-ray analysis showed that the crystallinity of AgNPs corresponded to the centered face phase of silver. The antibacterial and leishmanicidal activities of AgNPs were evaluated. The AgNPs presented antibacterial activity on the Gram-negative bacteria Escherichia coli at 53.9 µg mL-1. The leishmanicidal activity evaluation against promastigote forms of Leishmania infantum, Leishmania amazonensis, and Leishmania braziliensis showed that the biological response is dependent on the volume of AgNP suspension. It was demonstrated that L. infantum was more sensitive to the nanoparticle’s treatment than L. amazonensis and L. braziliensis. The treatment of L infantum promastigotes with 150 µL of AgNP suspension reduced parasite growth by 67.9%, a result which was similar to the treatment with 1 (66.7%) or 2 µL (70.6%) of amphotericin B used as a positive control. synthesis characterization AgNPs. . (AgNPs) grandis 40 UVVis UV Vis spectrum 97 9 7 9. 03 0 3 0. month E stabilization Xray X ray evaluated Gramnegative Gram negative 539 53 53. mL1. mL1 mL 1. mL-1 nanoparticle s 15 679 67 67.9% 66.7% 667 66 (66.7% 70.6% 706 70 6 (70.6% control (AgNPs 4 5 mL- 67.9 66.7 (66.7 70.6 (70.6 67. 66. (66. 70. (70. (66 (70 (6 (7 (

Multiple environmental problems are caused by the accumulation of nitrogen (N) and phosphorus (P) in river water on its way to the ocean. The objective of this work was to determine the N and P loads in 12 hydrographic basins that flow into estuaries along the northeastern coast of Brazil using established methods. Additionally, natural and anthropogenic loads trends in the hydrographic basins of 12 tropical rivers in northeastern Brazil over 27 years (1990-2016) were evaluated. The results indicated an annual average increase of +1.1% in population density, while precipitation showed no significant trend. The anthropogenic loads were 21 and 112 times higher than natural inputs for N and P, respectively. Anthropogenic sources accounted for ~ 96% of all contributions. The positive trends of these loads (mainly wastewater) represented an annual average increase of 1.1% for N and 1.2% for P, for all river basins included in this study. These percentages represent average annual loads of 251 t N yr-1 and 54.8 t P yr-1. The time series of N and P in the study region showed trends that point to a constant increase, implying a greater contribution of these loads to the adjacent coastal region year after year. (N (P ocean 1 methods Additionally 2 19902016 1990 2016 (1990-2016 evaluated 11 +1.1 density trend respectively 96 contributions mainly wastewater 1.1 1.2 25 yr1 yr yr- 548 54 8 54. yr1. 1. 1990201 199 201 (1990-201 +1. 9 5 199020 19 20 (1990-20 +1 19902 (1990-2 + (1990- (1990 (199 (19 (1 (

RESUMO Objetivos. Implementar e avaliar o uso de amostragem de águas residuais na detecção do coronavírus da síndrome respiratória aguda grave 2 (SARS-CoV-2) em dois distritos costeiros da Província de Buenos Aires, Argentina. Métodos. No distrito de General Pueyrredon, amostras de 400 mL de águas residuais foram coletadas ao longo de 24 horas com um amostrador automático; já no distrito de Pinamar, foram coletados 20 L no total (2,2 L a intervalos de 20 minutos). As amostras foram coletadas uma vez por semana e concentradas por floculação com cloreto de polialumínio. A purificação do RNA e a amplificação e detecção de genes-alvo foram realizadas por meio de reação em cadeia da polimerase com transcrição reversa para diagnóstico clínico de esfregaços nasofaríngeos humanos. Resultados. Detectou-se presença de SARS-CoV-2 em águas residuais dos dois distritos. Em General Pueyrredon, o SARS-CoV-2 foi detectado na semana epidemiológica 28 de 2020, ou seja, 20 dias antes do início de um aumento no número de casos da doença provocada pelo coronavírus de 2019 (COVID-19) na primeira onda (semana epidemiológica 31) e 9 semanas antes de se registrar o número máximo de casos de COVID-19 confirmados em laboratório. No distrito de Pinamar, o genoma viral foi detectado na semana epidemiológica 51 de 2020, mas não foi possível realizar a amostragem novamente até a semana epidemiológica 4 de 2022, quando a circulação do vírus foi novamente constatada. Conclusões. Foi possível detectar o genoma do vírus SARS-CoV-2 em águas residuais, demonstrando a utilidade da aplicação da epidemiologia baseada em águas residuais para detectar e monitorar o SARS-CoV-2 em longo prazo.

RESUMEN Objetivos. Aplicar y evaluar la utilización de muestreos de aguas residuales como método para la detección del coronavirus del síndrome respiratorio agudo severo de tipo 2 (SARS-CoV-2) en dos distritos costeros de la Provincia de Buenos Aires, Argentina. Métodos. Se utilizó un dispositivo de muestreo automático para tomar muestras de 400 mL de las aguas residuales de 24 horas en el distrito de General Pueyrredon, mientras que en el distrito de Pinamar se tomaron muestras de 2,2 L a intervalos de 20 minutos hasta un volumen total de 20 L. Los muestreos se realizaron una vez por semana. Las muestras se concentraron mediante floculación con policloruro de aluminio. La purificación del ARN y la amplificación y detección del gen diana se llevaron a cabo mediante la prueba de reacción en cadena de la polimerasa con retrotranscripción para el diagnóstico clínico a partir de hisopados nasofaríngeos. Resultados. Se observó la presencia de SARS-CoV-2 en las aguas residuales de ambos distritos. En General Pueyrredon, el SARS-CoV-2 se halló en la semana epidemiológica 28 del 2020, es decir, 20 días antes del inicio del aumento de casos de enfermedad por coronavirus 2019 (COVID-19) registrado en la primera ola (semana epidemiológica 31) y nueve semanas antes de que se alcanzara el número máximo de casos de COVID-19 con confirmación de laboratorio. En el distrito de Pinamar se detectó el genoma viral en la semana epidemiológica 51 del 2020, pero solo se pudo volver a realizar el muestreo en la semana epidemiológica 4 del 2022, en la que se volvió a detectar la circulación del virus. Conclusiones. Se pudo detectar el genoma del virus SARS-CoV-2 en aguas residuales, lo que muestra la utilidad de la aplicación de la epidemiología de aguas residuales como método para la detección y el seguimiento del SARS-CoV-2 a largo plazo.

ABSTRACT Objectives. To implement and evaluate the use of wastewater sampling for detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in two coastal districts of Buenos Aires Province, Argentina. Methods. In General Pueyrredon district, 400 mL of wastewater samples were taken with an automatic sampler for 24 hours, while in Pinamar district, 20 L in total (2.2 L at 20-minute intervals) were taken. Samples were collected once a week. The samples were concentrated based on flocculation using polyaluminum chloride. RNA purification and target gene amplification and detection were performed using reverse transcription polymerase chain reaction for clinical diagnosis of human nasopharyngeal swabs. Results. In both districts, the presence of SARS-CoV-2 was detected in wastewater. In General Pueyrredon, SARS-CoV-2 was detected in epidemiological week 28, 2020, which was 20 days before the start of an increase in coronavirus virus disease 2019 (COVID-19) cases in the first wave (epidemiological week 31) and 9 weeks before the maximum number of laboratory-confirmed COVID-19 cases was recorded. In Pinamar district, the virus genome was detected in epidemiological week 51, 2020 but it was not possible to carry out the sampling again until epidemiological week 4, 2022, when viral circulation was again detected. Conclusions. It was possible to detect SARS-CoV-2 virus genome in wastewater, demonstrating the usefulness of the application of wastewater epidemiology for long-term SARS-CoV-2 detection and monitoring.

Abstract The colorectal cancer (CRC) is one of the most aggressive and lethal in humans; its incidence is increasing due to poor eating habits and a sedentary lifestyle. Genomic alterations affecting various signaling pathways contribute to this cancer development. The transforming Growth Factor-β (TGF-β) is a multifunctional cytokine that controls multiple biological effects, including the maintenance of tissue homeostasis; however, alterations in its mechanisms of action favor the development of pathologies such as fibrosis and cancer. In early stages of CRC, TGF-β exerts tumor suppressive effects, whereas it promotes tumor progression in advanced stages, which is why it is considered an important therapeutic target. This review describes and analyzes the potential mechanisms of action and secretion of TGF-β in the tumor microenvironment of CRC, focusing on the knowledge generated using human CRC cell lines: SW480 (primary tumor) and SW620 (metastatic tumor), which come from the same patient and are characterized by being very agresive. These cells synthesize and secrete high levels of TGF-β, and express the main components of its signaling pathway, such as receptors and effectors, with the exception of SMAD4 protein. Furthermore, this review is also focused on describing the composition of the extracellular vesicles secreted by SW480 and SW620 cells, and their biological effects on various types of target cells; thus, we propose that these cells can provide a model to study the mechanisms of action and secretion of TGF-β cytokine in the later stages of CRC.

Resumen El cáncer colorrectal (CRC) es uno de los más agresivos y letales en el humano, su incidencia aumenta por los malos hábitos alimenticios y un estilo de vida sedentario. Las alteraciones genómicas que afecan la función de diversas vías de señalización contribuyen al desarrollo de este tipo de cáncer. El factor de crecimiento transformante β (TGF-β) es una citocina multifuncional con diversos efectos biológicos, incluido el control de la homeostasis tisular; sin embargo, los cambios inusuales en sus funciones favorecen el desarrollo de patologías como la fibrosis y el cáncer. En estadios tempranos del CRC, el TGF-β ejerce efectos supresores de tumores, pero en etapas avanzadas promueve la progresión tumoral, por lo que es considerado un importante blanco terapéutico. Esta revisión describe y analiza los mecanismos potenciales de acción y de secreción de la citocina TGF-β en el microambiente tumoral del CRC, y sus efectos biológicos sobre las líneas cancerosas humanas del CRC: SW480 (tumor primario) y SW620 (tumor metastásico), las cuales provienen del mismo paciente y muestran un alto grado de malignidad. Estas células se caracterizan por sintetizar y secretar altas cantidades de la citocina TGF-β, expresan a los principales componentes de su vía de señalización como los receptores y sus efectores, con excepción de la proteína SMAD4; además se conoce parte de la composición de las vesículas extracelulares secretadas por estas células, así como sus efectos biológicos en diferentes células blanco, por lo que las células SW480 y SW620 representan un modelo biológico ideal para estudiar las acciones del TGF-β en las etapas avanzadas del CRC.

Biochar from slow pyrolysis under controlled conditions is favorable in the transformation of waste into materials that serve as soil conditioners, and/or environmental remediation. Thus, this work aimed to produce and characterize biochar from cassava waste under different temperature conditions and evaluate interactions with Ca2+ and Pb2+ for agricultural and environmental applications. To investigate the efficiency of the interaction of biochar with nutrients (Ca) and contaminants (Pb), the influence of pH and contact time were evaluated. There was an increase in pH, pHzpc (zero point charge), and condensed aromatic structures in BC, due to the increase in pyrolysis temperature. Also, biochar demonstrated a Pb2+ adsorbed amount of 2.03 to 2.37 mg g-1 and a Ca2+ release capacity of 0.655 to 0.765 mg g-1. In this way, biochar produced from residues of cassava waste can be a viable strategy to enhance agricultural production and reduce environmental contaminants.

Resumo O objetivo deste artigo é mensurar desigualdades socioeconômicas no acesso a serviços de saúde, no contato com profissionais e em intervenções específicas. Estudo transversal de base populacional com indivíduos (18 anos ou mais) vivendo em Rio Grande. Os desfechos mensurados foram: cobertura da Estratégia de Saúde da Família (ESF), plano de saúde, visita do agente comunitário de saúde, consulta médica, consulta com dentista, aconselhamento nutricional, aula com professor de educação física, vacina da gripe, mamografia, exames citopatológico e de próstata. Medidas de desigualdade absolutas e relativas foram utilizadas para avaliar a distribuição dos desfechos. A taxa de resposta foi de 91% (1.300 adultos entrevistados). A cobertura dos indicadores variou de 16,1%, para ter aula com professor de educação física, a 80,0%, para consulta médica. Cobertura de ESF e visita do agente comunitário de saúde apresentaram maior proporções entre os mais pobres, enquanto desfechos de contato com profissionais de saúde, exames de rastreamento e vacina da gripe foram mais prevalentes entre os mais ricos. Foram observadas baixas coberturas de acesso aos serviços e contato com profissionais, bem como desigualdades sociodemográficas importantes.

Abstract This article aims to measure socioeconomic inequalities regarding access to health services, contact with health professionals, and specific health interventions. This was a cross-sectional population-based study with individuals aged 18 years or older, living in the city of Rio Grande. The outcomes were the following: Family Health Strategy (FHS) coverage; having a health insurance plan; receiving a visit of a community health worker; medical consultation; dental consultation; dietary counseling; having a class with a physical education professional; flu vaccination; mammography, cytopathological and prostate exams. Relative and absolute measures were used to assess inequalities in the distribution of the outcomes. There was a response rate of 91% (1,300 adults were interviewed). Coverage indicators ranged from 16.1%, for having a class with a physical education professional, to 80.0% for medical consultation. FHS coverage and visit of a community health agent presented higher proportions among the poorest while outcomes regarding contact with health professionals, screening exams and flu vaccine were more prevalent among richest group. We observed low coverage levels of access to health services and professionals in addition to marked socioeconomic inequalities.

Resumo O objetivo deste artigo é mensurar desigualdades socioeconômicas no acesso a serviços de saúde, no contato com profissionais e em intervenções específicas. Estudo transversal de base populacional com indivíduos (18 anos ou mais) vivendo em Rio Grande. Os desfechos mensurados foram: cobertura da Estratégia de Saúde da Família (ESF), plano de saúde, visita do agente comunitário de saúde, consulta médica, consulta com dentista, aconselhamento nutricional, aula com professor de educação física, vacina da gripe, mamografia, exames citopatológico e de próstata. Medidas de desigualdade absolutas e relativas foram utilizadas para avaliar a distribuição dos desfechos. A taxa de resposta foi de 91% (1.300 adultos entrevistados). A cobertura dos indicadores variou de 16,1%, para ter aula com professor de educação física, a 80,0%, para consulta médica. Cobertura de ESF e visita do agente comunitário de saúde apresentaram maior proporções entre os mais pobres, enquanto desfechos de contato com profissionais de saúde, exames de rastreamento e vacina da gripe foram mais prevalentes entre os mais ricos. Foram observadas baixas coberturas de acesso aos serviços e contato com profissionais, bem como desigualdades sociodemográficas importantes.

Abstract This article aims to measure socioeconomic inequalities regarding access to health services, contact with health professionals, and specific health interventions. This was a cross-sectional population-based study with individuals aged 18 years or older, living in the city of Rio Grande. The outcomes were the following: Family Health Strategy (FHS) coverage; having a health insurance plan; receiving a visit of a community health worker; medical consultation; dental consultation; dietary counseling; having a class with a physical education professional; flu vaccination; mammography, cytopathological and prostate exams. Relative and absolute measures were used to assess inequalities in the distribution of the outcomes. There was a response rate of 91% (1,300 adults were interviewed). Coverage indicators ranged from 16.1%, for having a class with a physical education professional, to 80.0% for medical consultation. FHS coverage and visit of a community health agent presented higher proportions among the poorest while outcomes regarding contact with health professionals, screening exams and flu vaccine were more prevalent among richest group. We observed low coverage levels of access to health services and professionals in addition to marked socioeconomic inequalities.

BACKGROUND Understanding the epidemiology of malaria through the molecular force of the blood-stage infection of Plasmodium vivax (molFOB) may provide a detailed assessment of malaria transmission. OBJECTIVES In this study, we investigated risk factors and spatial-temporal patterns of incidence of Plasmodium infection and clinical malaria episodes in three peri-urban communities of Manaus, Western Brazilian Amazon. METHODS Monthly samples were collected in a cohort of 1,274 individuals between April 2013 and March 2014. DNA samples were subject to Plasmodium species. molFOB was calculated by counting the number of genotypes observed on each visit, which had not been present in the preceding two visits and adjusting these counts by the respective times-at-risk. FINDINGS Respectively, 77.8% and 97.2% of the population remained free of P. vivax and P. falciparum infection. Expected heterozygosity for P. vivax was 0.69 for MSP1_F3 and 0.86 for MS2. Multiplicity of infection in P. vivax was close to the value of 1. The season was associated with P. vivax positivity [adjusted hazard ratio (aHR) 2.6 (1.9-5.7)] and clinical disease [aHR 10.6 (2.4-47.2)]. P. falciparum infection was associated with previous malarial episodes [HR 9.7 (4.5-20.9)]. Subjects who reported possession of a bed net [incidence rate ratio (IRR) 1.6 (1.2-2.2)] or previous malaria episodes [IRR 3.0 (2.0-4.5)] were found to have significantly higher P. vivax molFOB. MAIN CONCLUSIONS Overall, P. vivax infection prevailed in the area and infections were mostly observed as monoclonal. Previous malaria episodes were associated with significantly higher P. vivax molFOB.

The assignment of absolute configuration (AC) is a crucial step in the structural characterization of natural products, especially for those subjected to biological assays. Methods such as X-ray crystallography, stereocontrolled organic synthesis, nuclear magnetic resonance (NMR), and chiroptical spectroscopies are commonly used to determine the AC of chiral natural compounds. Even with these well-established techniques, however, unambiguous stereochemical assignments of natural products remain a challenge, resulting in an increasing number of structural misassignments being reported every year. Herein, we will present the main techniques that have been used in AC reassignments of natural products over the last 10 years, along with some selected examples. Special attention will be paid to the strengths and weaknesses of each approach. With this, we expect to provide the readers with critical information to help them to choose the appropriate methods for correct AC determinations.