Resumo Horismenus camobiensis sp. nov. (Hymenoptera: Eulophidae) é descrita com base em dados morfológicos, moleculares e ecológicos; esta nova espécie Chalcididae atua como hiperparasitoide de Opsiphanis invirae (Hübner, 1818) (Lepidoptera: Nymphalidae) em pupas de seu parasitoide Cotesia invirae Salgado-Neto and Whitfield, 2019 (Hymenoptera: Braconidae). Caracteres diagnósticos morfológicos e moleculares e ilustrações de H. camobiensis são fornecidos.

Abstract Horismenus camobiensis sp. nov. (Hymenoptera: Eulophidae), is described based on morphological, molecular and ecological data; this new species of chalcid wasp acts as hyperparasitoid of Opsiphanis invirae (Hübner, 1818) (Lepidoptera: Nymphalidae) in its parasitoid Cotesia invirae Salgado-Neto and Whitfield, 2019 (Hymenoptera: Braconidae). Diagnoses with morphological and molecular characters and illustrations are provided.

Resumo Diversidade molecular, morfológica, perfil químico qualitativo e atividade antioxidante de fungos filamentosos do trato digestivo de Phylloicus sp. (Trichoptera: Calamoceratidae). Este estudo visou identificar por análises molecular, morfológica, química e por extrato antioxidante, fungos filamentosos isolados do trato digestivo de Phylloicus sp, um inseto aquático que vive entre folhagens em riachos tropicais, e participam junto com os fungos da decomposição de substratos vegetais em habitats aquáticos. Larvas de insetos de Phylloicus sp. foram coletadas em riachos no Estado do Tocantins, Brasil. Os fungos foram isolados a partir do trato digestivo das larvas após desinfecção e dissecção, depois descritos e purificados para fins de identificação e testes para atividade antioxidante. A identidade molecular foi realizada do sequenciamento ITS1 e ITS4, TUB e TEF. Os extratos fúngicos foram produzidos em solução etanólica 70% e posterior liofilização. Para análise de grupos químicos dos extratos, foi realizada cromatografia em camada delgada (CCD) em duas fases móveis e diferentes reveladores. A morfologia foi realizada por microscopia óptica corada com Azul de Toluidina e a mensuração realizada no programa ImageJ. A atividade antioxidante realizada em CCD e por método quantitativo para os radicais DPPH e peróxido de hidrogênio (H2O2). Foram identificados quatro fungos: Endomelanconiopsis endophytica, Myxospora musae, Neopestalotiopsis cubana e Fusarium pseudocircinatum. Na CCD foi evidenciado várias manchas com fase móvel acetona/clorofórmio e reveladores UV 254 nm e vapor de I2. Os extratos fúngicos demonstram ação antioxidante para redução do radical livre DPPH e em especial para H2O2 acima de 50%, E. endophytica 91.6%, M. musae 87.8%, N. cubana 89.5% e 92.3% para F. pseudocircinatum. Este estudo demonstrou que a técnica molecular por PCR foi satisfatória para identificação dos fungos, e os extratos com inúmeros grupos químicos e potentes agentes redutores. Com isso, trabalhos futuros deverão ser realizados avaliando essas quatro espécies para uso industrial.

Abstract This study aimed to identify by molecular analysis, morphology, chemistry and antioxidant extracts of filamentous fungi isolated from the digestive tract of Phylloicus sp, an aquatic insect that lives on leaf packages in tropical streams and participates together with fungi of the decomposition of plant substrates in aquatic habitats. Insect larvae of Phylloicus sp. were collected in streams in the state of Tocantins, Brazil. Fungi were isolated from the digestive tract of larvae after disinfection and dissection, then described and purified for identification purposes and testing for antioxidant activity. Molecular identity was performed of ITS1 and ITS4, TUB e TEF sequencing. Fungal extracts were produced in 70% ethanol solution and later lyophilized. For analysis of chemical groups of extracts, thin layer chromatography (TLC) was performed in two mobile phases and different developers. Morphology was performed by optical microscopy stained with Toluidine Blue and measurement performed using the ImageJ program. Antioxidant activity performed in TLC and by quantitative method for DPPH and hydrogen peroxide (H2O2) radicals. Four fungi were identified: Endomelanconiopsis endophytica, Myxospora musae, Neopestalotiopsis cubana and Fusarium pseudocircinatum. The TLC showed several spots with acetone/chloroform mobile phase and UV 254 nm developers and I2 vapor. Fungal extracts demonstrate antioxidant action to reduce the DPPH free radical and especially for H2O2 above 50%, E. endophytica 91.6%, M. musae 87.8%, N. cubana 89.5% and 92.3% for F. pseudocircinatum. This study demonstrated that the molecular technique by PCR was satisfactory for identifying fungi, and extracts with numerous chemical groups and potent reducing agents. Thus future work, should be carried out evaluating these four species for industrial use.

Resumo O conteúdo de dopamina nas estruturas cerebrais tem sido relacionado à excitabilidade neuronal e várias abordagens têm sido utilizadas para estudar este fenômeno durante o período de vulnerabilidade às crises. No presente trabalho, descrevemos os efeitos da depleção de dopamina após a administração de 6-hidroxidopamina (6-OHDA) na região pars compacta da substância negra de ratos submetidos ao modelo de epilepsia com pilocarpina. A susceptibilidade ao estado de mal epiléptico induzido pela pilocarpina, bem como a frequência de crises espontâneas e recorrentes durante o período crônico do modelo foi determinada. Sendo o hipocampo uma das principais estruturas afetadas no desenvolvimento desse modelo experimental de epilepsia, os níveis de dopamina nessa região foram determinados após a administração da droga. No primeiro experimento, 62% (15/24) dos ratos pré-tratados com 6-OHDA e 45% (11/24) daqueles que receberam ácido ascórbico como solução controle evoluíram para crises límbicas motoras e para o estado de mal epiléptico, após a administração de pilocarpina. A gravidade das crises durante o período agudo do modelo foi significativamente maior nos ratos epilépticos experimentais (56,52%) do que nos ratos controle (4,16%). No segundo experimento, não houve diferença significante entre os grupos quanto à frequência de crises na fase crônica do modelo. Nossos dados mostraram que a dopamina pode desempenhar um papel importante na gravidade das crises na fase aguda da pilo, o que parece ser exercido por sua ação inibitória da dopamina sobre a expressão motora das crises.

Abstract The dopamine content in cerebral structures has been related to neuronal excitability and several approaches have been used to study this phenomenon during seizure vulnerability period. In the present work, we describe the effects of dopamine depletion after the administration of 6-hidroxidopamine (6-OHDA) into the substantia nigra pars compacta of male rats submitted to the pilocarpine model of epilepsy. Susceptibility to pilocarpine-induced status epilepticus (SE), as well as spontaneous and recurrent seizures (SRSs) frequency during the chronic period of the model were determined. Since the hippocampus is one of main structures in the development of this experimental model of epilepsy, the dopamine levels in this region were also determined after drug administration. In the first experiment, 62% (15/24) of 6-OHDA pre-treated rats and 45% (11/24) of those receiving ascorbic acid as control solution progressed to motor limbic seizures evolving to SE, after the administration of pilocarpine. Severeness of seizures during the model´s the acute period, was significantly higher in epileptic experimental rats (56.52%), than in controls (4.16%). In the second experiment, the frequency of seizures in the model’s chronic phase did not significantly change between groups. Our data show that dopamine may play an important role on seizure severity in the pilo’s model acute period, which seems to be due to dopamine inhibitory action on motor expression of seizure.

ABSTRACT Objective: To define a reference chart comparing pressure drop vs. flow generated by a set of arterial cannulae currently utilized in cardiopulmonary bypass conditions in pediatric surgery. Methods: Cannulae from two manufacturers were selected considering their design and outer and inner diameters. Cannula performance was evaluated in terms of pressure drop vs. flow during simulated cardiopulmonary bypass conditions. The experimental circuits consisted of a Jostra HL-20 roller pump, a Quadrox-i pediatric oxygenator (Maquet Cardiopulmonary AG, Rastatt, Germany), and a custom pediatric tubing set. The circuit was primed with lactated Ringer’s solution only (first condition) and with human packed red blood cells added (second condition) to achieve a hematocrit of 30%. Cannula sizes 8 to 16 Fr were inserted into the cardiopulmonary bypass circuit with a “Y” connector. The flow was adjusted in 100 ml/min increments within typical flow ranges for each cannula. Pre-cannula and post-cannula pressures were measured to calculate the pressure drop. Results: Utilizing a pressure drop limit of 100 mmHg, our results suggest a recommended flow limit of 500, 900, 1400, 2600, and 3100 mL/min for Braile arterial cannulae sizes 8, 10, 12, 14, and 16 Fr, respectively. For Medtronic DLP arterial cannulae sizes 8, 10, 12, 14, and 16 Fr, the recommended flow limit is 600, 1100, 1700, 2700, and 3300 mL/min, respectively. Conclusion: This study reinforces discrepancies in pressure drop between cannulae of the same diameter supplied by different manufacturers and the importance of independent translational research to evaluate components’ performance.

ABSTRACT Objective: To report outcomes from the largest multicenter series of penile cancer patients undergoing video endoscopic inguinal lymphadenectomy (VEIL). Materials and Methods: Retrospective multicenter analysis. Authors of 21 centers from the Penile Cancer Collaborative Coalition-Latin America (PeC-LA) were included. All centers performed the procedure following the same previously described standardized technique. Inclusion criteria included penile cancer patients with no palpable lymph nodes and intermediate/high-risk disease and those with non-fixed palpable lymph nodes less than 4 cm in diameter. Categorical variables are shown as percentages and frequencies whereas continuous variables as mean and range. Results: From 2006 to 2020, 210 VEIL procedures were performed in 105 patients. Mean age was 58 (45-68) years old. Mean operative time was 90 minutes (60-120). Mean lymph node yield was 10 nodes (6-16). Complication rate was 15.7%, including severe complications in 1.9% of procedures. Lymphatic and skin complications were noted in 8.6 and 4.8% of patients, respectively. Histopathological analysis revealed lymph node involvement in 26.7% of patients with non-palpable nodes. Inguinal recurrence was observed in 2.8% of patients. 10y- overall survival was 74.2% and 10-y cancer specific survival was 84.8%. CSS for pN0, pN1, pN2 and pN3 were 100%, 82.4%, 72.7% and 9.1%, respectively. Conclusion: VEIL seems to offer appropriate long term oncological control with minimal morbidity. In the absence of non-invasive stratification measures such as dynamic sentinel node biopsy, VEIL emerged as the alternative for the management of non-bulky lymph nodes in penile cancer.

Resumen Introducción: La obesidad infantil es una enfermedad multifactorial en la que varios factores comienzan a desarrollarse antes del nacimiento y se agravan a lo largo de la vida. Por ello, los esfuerzos de prevención para evitar su desarrollo deben comenzar durante los primeros 1000 días de vida. Los objetivos de este estudio fueron cuantificar los estudios publicados sobre factores de riesgo según el modelo de obesidad infantil de las 6-Cs (célula, niño, familia, cultura, comunidad y país) y determinar cuáles de ellos se han relacionado con indicadores de sobrepeso u obesidad en niños menores de 2 años en México. Métodos: Se realizó una revisión sistemática de alcance (PRISMA-ScR). Se revisaron las bases de datos de PubMed, Scopus y EBSCOhost. Resultados: Se encontró que el 88% de los estudios fueron de tipo observacional. La esfera niño y familia fueron las más abordadas, tanto individual como en conjunto. Las menos estudiadas fueron comunidad, cultura y país. Los principales factores de riesgo relacionados con indicadores de obesidad fueron alto peso al nacer, nacer por vía cesárea y prácticas inadecuadas de alimentación; además, madres con obesidad y que subestiman el peso del hijo, estilo de crianza presionante e inseguridad alimentaria en el hogar, aunado el vivir en zonas urbanas, ingreso económico-familiar y creencias sobre la preferencia por productos ultraprocesados. Conclusiones: En México, el estudio de obesidad durante los primeros 1000 días es emergente a nivel de investigación, pero se requiere continuar con el esfuerzo para cerrar la brecha de conocimiento a nivel socio-ecológico, diseñar intervenciones basadas en la evidencia y disminuir la obesidad temprana.

Abstract Background: Childhood obesity is a multifactorial disease. Most of these factors start to develop before birth and worsen throughout life. Therefore, prevention efforts should begin in the first 1000 days of life. This study aimed to quantify published studies on risk factors according to the Six-Cs model of childhood obesity (cell, child, clan, culture, community, and country) and determine which of them have been related to anthropometric indicators of overweight or obesity in children under 2 years of age in Mexico. Methods: A systematic scoping review (PRISMA-ScR) was performed. PubMed, Scopus, and EBSCOhost databases were reviewed. Results: We found that 88% of the studies were observational. The child and family spheres were the most studied, individually and as a whole. The least studied were community, culture, and country. The main risk factors related to obesity indicators were high birth weight, birth by cesarean section, and inadequate feeding practices, in addition to mothers with obesity and those who underestimate their child's weight, stressful parenting style, and food insecurity in the home, together with living in urban areas, family income, and beliefs about preference for ultra-processed products. Conclusion: In Mexico, the study of obesity in early childhood is emerging at the research level. However, further efforts are required to close the knowledge gap at the socioecological level to design evidence-based interventions and reduce early obesity.

Abstract Objective: The purpose was to compare the outcomes of patients with ST-elevation myocardial infarction and multivessel coronary artery disease undergoing one-time multivessel revascularization (OTMVR) versus in-hospital staged complete revascularization with percutaneous coronary intervention. Methods: This was a single-center, retrospective, observational, and cohort study, including data from January 2013 to April 2019. A total of 634 patients were included in the study. Comparisons were made between patients who underwent in-hospital staged complete revascularization versus OTMVR. The primary endpoint was all-cause in-hospital mortality, secondary endpoints included cardiovascular complications, all-cause new hospitalization, and mortality evaluated at 30 days and 1 year. In addition, we constructed a logistic regression model for determining the risk factors that predicted mortality. Results: Of the 634 patients, 328 were treated with staged revascularization and 306 with OTMVR. About 76.7% were men, with a mean age of 63.3 years. Less complex coronary lesions and a higher proportion of the left anterior descending artery as the culprit vessel were found in the OTMVR group. Compared with staged revascularization, the primary and secondary endpoints occurred less frequently with OTMVR strategy. Conclusions: OTMVR did not generate more complications and demonstrate better clinical outcomes than in-hospital staged revascularization.

Resumen Objetivo: El propósito fue comparar resultados de pacientes con infarto agudo de miocardio con elevación del segmento ST y enfermedad coronaria multivaso sometidos a revascularización completa de un solo momento frente a revascularización completa por etapas mediante intervención coronaria percutánea. Métodos: Estudio cohorte observacional, retrospectivo, unicéntrico, con datos de enero de 2013 a abril de 2019, incluyendo 634 pacientes. Se compararon resultados entre pacientes sometidos a revascularización completa por etapas frente a revascularización completa en un solo momento. El objetivo primario fue valorar mortalidad intrahospitalaria por cualquier causa y como objetivos secundarios se evaluaron a 30 días y 1 año las complicaciones cardiovasculares, hospitalizaciones y mortalidad. Se construyó un modelo de regresión logística para determinar los factores de riesgo que predijeron mortalidad. Resultados: De 634 pacientes, 328 fueron tratados con revascularización por etapas y 306 con revascularización en una intervención. El 76.7% fueron hombres, con una media de edad de 63.3 años. En el grupo de revascularización de un solo tiempo se encontraron lesiones coronarias menos complejas y una mayor proporción de la arteria descendente anterior como vaso culpable. Comparado con el grupo de revascularización por etapas, los objetivos primarios y secundarios ocurrieron con menos frecuencia en el grupo de revascularización en un solo tiempo. Conclusiones: Comparada con la revascularización intrahospitalaria por etapas, la revascularización en una intervención lleva a mejores desenlaces clínicos sin generar más complicaciones.

Abstract CuCrO2 was synthesized by solution combustion synthesis (SCS) and applied as a heterogeneous catalyst to produce soybean biodiesel. The combustion reaction was carried out using urea as a fuel, and copper (II) and chromium (III) nitrates as precursors. After the powders’ obtention, these were calcined and functionalized in an acidic medium. The powders were characterized by thermogravimetry (TG), X-ray diffraction (XRD), scanning electron microscopy (SEM), and infrared spectroscopy (IR) techniques. The TG curve revealed that the formation of the CuCrO2 in the combustion reaction remained stable up to 1000 °C. The XRD results confirmed the formation of the CuCrO2 compound. The SEM images showed that the crystallinity of the samples increased after the calcination process. The IR spectra showed the presence of delafossite characteristic bands. After the transesterification reaction, biodiesel was obtained with a yield of around 80%. Thus, catalysts based on delafossite synthesized through the combustion method and functionalized showed to be promising for the transesterification reaction of vegetable oils.

Abstract Until now, there is no protocol for the micropropagation of pecan trees (Carya illinoinensis) from explants of adult trees. Persistent microbial contamination and browning of tissues have impeded the success of previously proposed methods. Specifically, the adult tree leaf explant constitutes an unexplored starting point for the regeneration of C. illinoinensis. Therefore, the objective of this study was to determine a disinfection method and in vitro culture conditions that induce greater callus production in adult pecan tree leaf explants. Five disinfection methods were tested: (1) 70% ethanol for 50 s, 1.8-2.7% sodium hypochlorite with 2 drops/L of Tween 80 for 50 s, (2) 70% ethanol for 2 min, 1.8-2.7% sodium hypochlorite with 2 drops/L of Tween 80 for 2 min, (3) 70% ethanol for 2 min, 1.8-2.7% sodium hypochlorite with 2 drops/L of Tween 80 for 2 min, 1 g/L of carbendazim with 2 drops/L of Tween 80 for 20 min, (4) 70% ethanol for 2 min, 1.8-2.7% sodium hypochlorite with 2 drops/L of Tween 80 for 2 min, 8.8 g/L of carbendazim with 2 drops /L of Tween 80 for 20 min, and (5) 70% ethanol for 2 min, 1.8-2.7% sodium hypochlorite with 2 drops/L of Tween 80 for 2 min, 1 g/L of prochloraz with 2 drops/L of Tween 80 for 20 min. In addition, 6 different culture media were tested where the carbon source (sucrose, glucose and maltose), the inclusion of an antioxidant (AgNO3 and activated carbon), and the concentration of MS salts (maximum or one third of the maximum concentration) were varied. The explants were incubated for 50 days; a portion of the explants was incubated in the dark and the other under a photoperiod of 16 h. Likewise, some explants were inoculated in abaxial orientation, and others in abaxial orientation. The level of browning, the percentage of explants with callus, the fresh and dry weight of the calluses, and the percentage of explants contaminated by microorganisms were evaluated. The lowest percentage of contaminated explants was observed in the disinfection treatment that included immersion in prochloraz, and prochloraz was the only fungicide that allowed callogenesis in 100% of the treated explants. The darkening in the explants did not increase when the concentration of MS salts tripled. Glucose significantly reduced browning, but also significantly decreased the percentage of explants with callus, compared to that observed when using sucrose or maltose. The adaxial orientation promoted a higher percentage of explants with callus, with a fresh and dry weight, as well as a higher moisture percentage. The photoperiod prevented callus production, while incubation in the dark allowed more than 80% of the explants to produce callus in each treatment. The medium without antioxidant and the medium with 5 mg/L of silver nitrate gave similar browning results, while 1 g/L of activated carbon left the explants unviable. The present work proposes a method for the aseptic establishment and in vitro culture conditions for callus initiation in leaflets of adult pecan tree, with reproducible results.

Resumen Hasta ahora, no existe un protocolo para la micropropagación de nogal pecanero (Carya illinoinensis) a partir de explantes de árbol adulto. La contaminación microbiana persistente y el oscurecimiento oxidativo de los tejidos han impedido el éxito de métodos previamente propuestos. Específicamente, el explante de hoja de árbol adulto constituye un punto de partida inexplorado para la regeneración de C. illinoinensis. Por ello, el objetivo de este estudio fue determinar un método de desinfección y las condiciones de cultivo in vitro que inducen una mayor producción de callo en explantes de hoja de árbol adulto de nogal pecanero. Se probaron 5 métodos de desinfección: (1) etanol 70% por 50 s, 1.8-2.7% hipoclorito de sodio con 2 gotas/L de Tween 80 por 50 s, (2) etanol 70% por 2 min, 1.8-2.7% hipoclorito de sodio con 2 gotas/L de Tween 80 por 2 min, (3) etanol 70% por 2 min, 1.8-2.7% hipoclorito de sodio con 2 gotas/L de Tween 80 por 2 min, 1 g/L de carbendazim con 2 gotas/L de Tween 80 por 20 min, (4) etanol 70% por 2 min, 1.8-2.7% hipoclorito de sodio con 2 gotas/L de Tween 80 por 2 min, 8.8 g/L de carbendazim con 2 gotas/L de Tween 80 por 20 min, y (5) etanol 70% por 2 min, 1.8-2.7% hipoclorito de sodio con 2 gotas/L de Tween 80 por 2 min, 1 g/L de procloraz con 2 gotas/L de Tween 80 por 20 min. Además, se probaron 6 diferentes medios de cultivo donde se varió la fuente de carbono (sacarosa, glucosa y maltosa), la inclusión de un antioxidante (AgNO3 y carbón activado), y la concentración de sales MS (máxima o un tercio de la concentración máxima). Los explantes fueron incubados durante 50 días; una porción de los explantes fue incubada en la oscuridad y la otra ante un fotoperiodo de 16 h. Asimismo, unos explantes fueron inoculados en orientación abaxial, y otros en orientación abaxial. Se evaluó el oscurecimiento oxidativo de los explantes, el porcentaje de explantes con callo, el peso fresco y seco de los callos, y el porcentaje de explantes contaminados por microorganismos. El menor porcentaje de explantes contaminados se observó en el tratamiento de desinfección que incluyó inmersión en procloraz, además procloraz fue el único fungicida que permitió la callogénesis en el 100% de los explantes tratados. El oscurecimiento en los explantes no aumentó al triplicar la concentración de sales MS. La glucosa redujo significativamente el oscurecimiento de los explantes, pero también disminuyó de manera significativa el porcentaje de explantes con callo, en comparación con lo observado al utilizar sacarosa o maltosa. La orientación adaxial, promovió un mayor porcentaje de explantes con callo, con un peso fresco y seco, así como un porcentaje de humedad superiores. El fotoperiodo impidió la producción de callo, mientras que la incubación en la oscuridad permitió que más del 80% de los explantes produjeran callo. El medio sin antioxidante y el medio con 5 mg/L de nitrato de plata dieron resultados semejantes de oscurecimiento, mientras que 1 g/L de carbón activado dejó los explantes inviables. El presente trabajo propone un método para el establecimiento aséptico y condiciones de cultivo in vitro para la iniciación de callos en hojas de nogal pecanero adulto, con resultados reproducibles.

Resumo A herança da característica de fruto sem sementes de Annona squamosa ainda não foi esclarecida. Técnicas moleculares podem auxiliar em programas de melhoramento, principalmente na seleção assistida do gene de interesse. O gene INO pode estar relacionado ao desenvolvimento da semente dessas frutas. O objetivo foi investigar a herança da ausência de sementes em Annona squamosa e a conservação do gene INO nos genótipos Annona squamosa e Annona cherimola x Annona squamosa avaliando sua homologia com banco de dados de genes INO. A geração F1 foi obtida pelo cruzamento do mutante 'Brazilian seedless' (genitor masculino) (P1) com o tipo selvagem com sementes (A. squamosa) (M1 e M2, genitores femininos). O gene INO foi estudado em A. squamosa, mutante e selvagem (P1, M1, M2 e M3) e na cultivar Gefner atemoya (A. cherimola x A. squamosa) (M4). O DNA foi extraído de folhas jovens, e quatro conjuntos de primers específicos flanqueando o gene INO foram amplificados. A característica sem sementes foi identificada como estenospermática nos frutos do parental P1, sugerindo herança monogênica com dominância completa. A alta similaridade de sequência das amplificações do gene INO nos acessos de pinha (M1, M2, M3) e na cultivar de atemóia Gefner (M4) reforça a hipótese de sua conservação.

Abstract The inheritance of the seedless fruit characteristic of Annona squamosa has not yet been explained. Molecular techniques may aid breeding programs, mainly in the assisted selection of the target gene. The INO gene may be related to seed development in these fruits. The objective of the present paper was to investigate the inheritance of seedlessness in the 'Brazilian seedless' sugar apple and INO gene conservation in Annona squamosa and Annona cherimola x Annona squamosa genotypes by assessing their homology with the INO database genes. The F1 generation was obtained by crossing the mutant 'Brazilian seedless' (male genitor) (P1) with the wild-type A. squamosa with seeds (M1 and M2, female genitors). The INO gene was studied in mutant and wild-type A. squamosa (P1, M1, M2 and M3) and in the Gefner atemoya (A. cherimola x A. squamosa) (M4) cultivar. The DNA was extracted from young leaves, and four sets of specific primers flanking the INO gene were amplified. The seedless characteristic was identified as stenospermatic in the fruits of parental P1, suggesting monogenic inheritance with complete dominance. High sequence similarity of the INO gene amplifications in the sugar apple accessions (M1, M2, M3) and the atemoya cultivar Gefner (M4) reinforces the hypothesis of their conservation.

ABSTRACT The effectiveness of the Bacillus subtilis and Pseudomonas donghuensis strains for the control of Fusarium oxysporum and Pythium aphanidermatum, which cause the drowning of chili seedlings in the greenhouse, was evaluated. Its pathogenicity to cause the disease was verified and antagonism tests were obtained in culture plates with enriched PDA. Through the in vitro confrontation of these phytopathogens with three strains of the species Bacillus subtilis, it was observed that this sporulate has the capacity to inhibit to a greater or lesser degree (39.35- 56.24 %) the mycelial growth of F. oxysporum, but not the from P. aphanidermatum, none of the Bacillus isolates used in this study had an effect in inhibiting this Oomycete, since it grew faster than the spore-forming bacteria, since P. aphanidermatum developed and grew to fill the culture plate in just 36 hours. On the other hand, P. donghuensis inhibited the growth of this last phytopathogen by 56 %, however, it did not present an inhibition effect against F. oxysporum, so it could be feasible to use mixtures of these two antagonists for the management of this disease and be able to control Damping off problems caused by these phytopathogens.

RESUMEN Se evaluó la efectividad de Pseudomonas donghuensis y Bacillus subtilis para el control de Fusarium oxysporum y Pythium aphanidermatum causantes del ahogamiento de plántulas de chile en invernadero. Se comprobó su patogenicidad para ocasionar la enfermedad y se realizaron pruebas de antagonismo en placas con PDA enriquecido. Mediante la confrontación in vitro de estos fitopatógenos con tres cepas de Bacillus subtilis se comprobó que este esporulado inhibió en mayor o menor grado (39.35- 56.24 %) el crecimiento micelial de F. oxysporum, pero no tuvo efecto alguno para P. aphanidermatum, ningún Bacillus inhibió a este Oomycete, debido a su rápido crecimiento en la placa de cultivo (36 h de incubación). En contraste P. donghuensis inhibió en un 56 % el crecimiento de P. aphanidermatum, y no presentó efecto inhibitorio para F. oxysporum, por lo que la mezcla de ambos antagonistas pudiera tener potencial para el control de los problemas de ahogamiento ‘‘Damping off” causados por estos fitopatógenos.

ABSTRACT OBJECTIVE: To describe the prevalence and factors associated with exclusive (EBF) and continued breastfeeding (BF) practices among Amazonian children. METHODS: Data from 1,143 mother-child pairs recorded on the Maternal and Child Health and Nutrition in Acre (MINA-Brazil) birth cohort were used. Information on EBF and BF was collected after childbirth (July 2015–June 2016) and during the follow-up visits at 1 and 6 months postpartum, 1, 2, and 5 years of age. For longitudinal analysis, the outcomes were EBF and BF duration. Probability of breastfeeding practices were estimated by Kaplan-Meier survival analysis. Associations between baseline predictors variables and outcomes among children born at term were assessed by extended Cox regression models. RESULTS: EBF frequencies (95% confidence interval [95%CI]) at 3 and 6 months of age were 33% (95%CI: 30.2–36.0) and 10.8% (95%CI: 8.9–12.9), respectively. Adjusted hazard ratio for predictors of early EBF cessation were: being a first-time mother = 1.47 (95%CI: 1.19–1.80), feeding newborns with prelacteals = 1.70 (95%CI: 1.23–2.36), pacifier use in the first week of life = 1.79 (95%CI: 1.44–2.23) or diarrhea in the first two weeks of life = 1.70 (95%CI: 1.15–2.52). Continued BF frequency was 67.9% (95%CI: 64.9–70.8), 29.3% (95%CI: 26.4–32.4), and 1.7% (95%CI: 0.9–2.8) at 1, 2 and 5 years of age, respectively. Adjusted hazard ratio for predictors of early BF cessation were: male sex = 1.23 (95%CI: 1.01–1.49), pacifier use in the first week of life = 4.66 (95%CI: 2.99–7.26), and EBF less than 3 months = 2.76 (95%CI: 1.64–4.66). CONCLUSIONS: EBF and continued BF duration among Amazonian children is considerably shorter than recommendations from the World Health Organization. Significant predictors of breastfeeding practices should be considered for evaluating local strategies to achieve optimal breastfeeding practices.

RESUMO OBJETIVO: Descrever a prevalência e os fatores associados às práticas de aleitamento materno exclusivo (AME) e continuado (AM) entre crianças amazônicas. MÉTODOS: Foram utilizados dados de 1.143 pares mãe-filho registrados na coorte de nascimento Materno-Infantil no Acre (MINA-Brasil). As informações sobre AME e AM foram coletadas após o parto (julho de 2015–junho de 2016) e durante as consultas de acompanhamento com 1 e 6 meses pós-parto e com 1, 2 e 5 anos de idade. A análise longitudinal considerou a duração do AME e AM como desfechos. A probabilidade das práticas de aleitamento materno foi estimada pela análise de sobrevida de Kaplan-Meier. As associações entre as variáveis preditoras basais e os desfechos entre crianças nascidas a termo foram avaliadas por modelos de regressão de Cox estendidos. RESULTADOS: As frequências de AME (intervalo de confiança de 95% [IC95%]) aos 3 e 6 meses de idade foram de 33% (IC95%: 30,2–36,0) e 10,8% (IC95%: 8,9–12,9), respectivamente. A razão de risco ajustada para preditores de interrupção precoce do AME foi: ser primípara = 1,47 (IC95%: 1,19–1,80), alimentar recém-nascidos com pré-lácteos = 1,70 (IC95%: 1,23–2,36), usar chupeta na primeira semana de vida = 1,79 (IC95%: 1,44–2,23) e apresentar diarreia nas duas primeiras semanas de vida = 1,70 (IC95%: 1,15–2,52). A frequência do AM continuado foi de 67,9% (IC95%: 64,9–70,8), 29,3% (IC95%: 26,4–32,4) e 1,7% (IC95%: 0,9–2,8) aos 1, 2 e 5 anos de idade, respectivamente. A razão de risco ajustada para preditores de cessação precoce do AM foi: sexo masculino = 1,23 (IC95%: 1,01–1,49), uso de chupeta na primeira semana de vida = 4,66 (IC95%: 2,99–7,26) e AME menor que 3 meses = 2,76 (IC95%: 1,64–4,66). CONCLUSÕES: A duração do AME e do AM continuado entre crianças amazônicas é consideravelmente menor do que as recomendações da Organização Mundial da Saúde. Preditores significativos das práticas de aleitamento materno devem ser considerados na avaliação das estratégias locais para alcançar práticas ideais de aleitamento materno.