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au:CHAVES, WILLIAM

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Understanding the dynamics of deceased organ donation and utilization in Colombia
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Cruz Mususú, William

; García-Lopez, Andrea

; Lozano-Suarez, Nicolás

; Gómez-Montero, Andrea

; Orellano-Salas, Milena

; Vargas-Pérez, Luisa

; Escobar-Chaves, Ximena

; Girón-Luque, Fernando

Revista Panamericana de Salud Pública

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2024, Volume 48 elocation e24

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

RESUMEN Objetivo. Presentar una descripción integral de la donación, utilización y descarte de órganos en todo el proceso de donación en Colombia. Métodos. Estudio retrospectivo de 1 451 donantes posibles, distribuidos en tres regiones de Colombia, que fueron evaluados en el 2022. Se describen las características generales, el diagnóstico y las causas de contraindicación de los donantes potenciales. Resultados. De los 1 451 donantes posibles, 441 (30,4%) cumplían con los criterios de muerte encefálica y constituyeron el conjunto de donantes potenciales. Las familias consintieron la donación de órganos en 141 casos aptos desde el punto de vista médico, mientras que en 60 casos se recurrió a la presunción legal, con lo que se llegó a 201 donantes aptos (13,9%). De estos, 160 (11,0%) fueron donantes reales (en los que se les practicó una incisión quirúrgica para la extracción de órganos o se obtuvo al menos un órgano). En última instancia, hubo 147 donantes utilizados (10,1%) (de los que se trasplantó al menos un órgano). Se observaron diferencias estadísticamente significativas entre las regiones en cuanto a edad, sexo, diagnóstico de muerte encefálica y vía crítica del donante. Se trasplantaron un total de 411 órganos procedentes de 147 donantes utilizados; los riñones fueron los órganos obtenidos y trasplantados con mayor frecuencia, ya que supusieron 280 (68,1%) del total de órganos, seguidos del hígado (85, 20,7%), el corazón (31 , 7,5%), los pulmones (14, 3,4%) y el páncreas (1, 0,2%). La tasa de descarte de los donantes fallecidos disponibles fue del 8,1%. Conclusiones. Aproximadamente una décima parte de los donantes son utilizados, de hecho, para realizar trasplantes. Estos datos destacan las áreas en las que se han obtenido buenos resultados y aquellas en las que se presentan desafíos, lo cual proporciona una base para futuras mejoras en Colombia.

ABSTRACT Objective. To obtain a comprehensive overview of organ donation, organ utilization, and discard in the entire donation process in Colombia. Methods. A retrospective study of 1 451 possible donors, distributed in three regions of Colombia, evaluated in 2022. The general characteristics, diagnosis, and causes of contraindication for potential donors were described. Results. Among the 1 451 possible donors, 441 (30.4%) fulfilled brain death criteria, constituting the potential donor pool. Families consented to organ donation in 141 medically suitable cases, while 60 instances utilized legal presumption, leading to 201 eligible donors (13.9%). Of those, 160 (11.0%) were actual donors (in whom operative incision was made with the intent of organ recovery or who had at least one organ recovered). Finally, we identified 147 utilized donors (10.1%) (from whom at least one organ was transplanted). Statistically significant differences were found between age, sex, diagnosis of brain death, and donor critical pathway between regions. A total of 411 organs were transplanted from 147 utilized donors, with kidneys being the most frequently procured and transplanted organs, accounting for 280 (68.1%) of the total. This was followed by 85 livers (20.7%), 31 hearts (7.5%), 14 lungs (3.4%), and 1 pancreas (0.2%). The discard rate of procured deceased donors was 8.1%. Conclusions. About one-tenth of donors are effectively used for transplantation purposes. Our findings highlight areas of success and challenges, providing a basis for future improvements in Colombia.

RESUMO Objetivo. Obter uma visão geral e abrangente da doação, do aproveitamento e do descarte de órgãos em todo o processo de doação na Colômbia. Métodos. Estudo retrospectivo de 1 451 possíveis doadores em três regiões da Colômbia que foram avaliados em 2022. Foram descritas as características gerais, o diagnóstico e os motivos para a contraindicação de potenciais doadores. Resultados. Dentre os 1 451 possíveis doadores, 441 (30,4%) preencheram os critérios de morte encefálica, formando o grupo de potenciais doadores. Em 141 casos considerados clinicamente aptos, as famílias consentiram com a doação de órgãos, e em 60 casos utilizou-se o princípio da presunção legal, resultando em 201 doadores elegíveis (13,9%). Desses, 160 (11,0%) foram doadores efetivos (ou seja, doadores nos quais foi feita uma incisão cirúrgica com a intenção de remover um órgão ou pessoas com pelo menos um órgão removido). Por fim, foram identificados 147 doadores utilizados (10,1%) (ou seja, que doaram pelo menos um órgão que foi transplantado). Foram encontradas diferenças estatisticamente significantes entre idade, sexo, diagnóstico de morte encefálica e itinerário crítico de doação entre as regiões. Um total de 411 órgãos foram transplantados de 147 doadores utilizados. Os rins foram os órgãos mais frequentemente removidos e transplantados, representando 280 (68,1%) do total, seguido de 85 fígados (20,7%), 31 corações (7,5%), 14 pulmões (3,4%) e 1 pâncreas (0,2%). A taxa de descarte de doadores falecidos com órgãos removidos foi de 8,1%. Conclusões. Cerca de um décimo dos doadores são efetivamente usados para fins de transplante. Nossos achados destacam áreas de sucesso e desafios, oferecendo uma base para futuras melhorias na Colômbia.

https://doi.org/10.26633/rpsp.2024.24

Genotipos de virulencia de Helicobacter pylori y su asociación con lesiones precursoras de malignidad gástrica y parámetros histológicos en pacientes colombianos
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Acosta-Astaiza, Claudia

; López-Sandoval, Alexis

; Bonilla-Chaves, Juan

; Valdes-Valdes, Anyi

; Romo-Romero, William

Revista Peruana de Medicina Experimental y Salud Pública

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sep 2023, Volume 40 N. 3 Pages 348 - 353

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

RESUMEN Se determinó la presencia de los genotipos de virulencia de Helicobacter pylori y su asociación con las lesiones precursoras de malignidad gástrica y parámetros histológicos en pacientes con síntomas de dispepsia del suroccidente de Colombia. Se realizó reacción en cadena de polimerasa (PCR) para la caracterización genética de vacA, cagA, babA2 y sabA. Se empleó la prueba de chi cuadrado o Fischer para evaluar la asociación de cada genotipo sobre el desenlace clínico. En los pacientes con lesiones precursoras de malignidad gástrica se encontró que el 86,3% presentaron el genotipo vacA s1/m1, el 68,1% cagA+ y los genotipos babA2+ y sabA+ con el 68,8% y 55,8%, respectivamente. También, se demostró la asociación entre los genotipos de virulencia y el grado severo de infiltración de células polimorfonucleares. Además, se encontró una asociación entre la combinación de los genes vacA/cagA, vacA/sabA y babA2/sabA. Este estudio proporciona evidencia acerca de la asociación de los genotipos de virulencia del H. pylori y la inflamación gástrica en pacientes infectados.

ABSTRACT The aim of this research was to determine the presence of Helicobacter pylori virulence genotypes and their association with precursor lesions of gastric malignancy and histological parameters in patients with dyspepsia symptoms in southwestern Colombia. Polymerase chain reaction (PCR) was used for the genetic characterization of vacA, cagA, babA2 and sabA. The chi-square or Fischer test were used to evaluate the association between each genotype and the clinical outcome. We found that 86.3% of the patients with precursor lesions of gastric malignancy presented the vacA s1/m1 genotype, 68.1% had the cagA+ genotype and 68.8% and 55.8% had the babA2+ and sabA+ genotypes, respectively. Our results show association between virulence genotypes and severe degree of polymorphonuclear cell infiltration. In addition, we found an association between the combination of vacA/cagA, vacA/sabA and babA2/sabA genes. This study provides evidence about the association of H. pylori virulence genotypes and gastric inflammation in infected patients.

https://doi.org/10.17843/rpmesp.2023.403.12858

Establishment of tropical forage grasses in the Cerrado biome
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Gurgel, Antonio Leandro Chaves

; Difante, Gelson dos Santos

; Costa, Carolina Marques

; Emerenciano Neto, João Virgínio

; Tonhão, Gustavo Henrique

; Ítavo, Luís Carlos Vinhas

; Dias, Alexandre Menezes

; Vilela, Iuri Mesquita Moraes

; Oliveira, Vivian Garcia de

; Lima, Pâmella Cristina da Silva

; Miyake, Andrey William Alce

Revista mexicana de ciencias pecuarias

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sep 2022, Volume 13 N. 3 Pages 674 - 689

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

Abstract This study was carried out to evaluate the time for the establishment of tropical forage grasses in the “Cerrado” biome, based on morphogenetic and structural traits. Three Brachiaria brizantha (Syn. Urochloa brizantha) cultivars (Paiaguás, Ipyporã and Marandu) and two Panicum maximum (Syn. Megathyrsus maximus) cultivars (Quênia and Tamani) were distributed in a randomized-block design with four replicates. Morphogenetic and structural traits of the pasture were assessed from d 35 to d 65 after sowing, at seven-day interval. Canopy height rose linearly with the establishment period, in all cultivars. In the Megathyrsus cultivars, tiller density decreased as the experimental period progressed, whereas the number of tillers in the Urochloa cultivars increased. The cultivars Ipyporã and Marandu had the highest leaf appearance rates. The lowest leaf elongation rates occurred in the cultivars Paiaguás, Ipyporã and Tamani, and the highest elongation rates in cv. Quênia. As a result, cv. Quênia showed the highest values of final leaf length (64.9 cm) and leaf blade mass (3,352.9 kg DM ha-1). The higher senescence rate of cv. Tamani (2.1 cm tiller-1 d-1) resulted in the highest percentage of dead material (1,815.5 kg ha-1) being found in the herbage mass of this cultivar. Cultivars Paiaguás, Marandu and Tamani were established at 44 d, whereas cv. Quênia and Ipyporã were established at 51 and 58 d after sowing, respectively, in the Brazilian Cerrado.

Resumen Este estudio se llevó a cabo para evaluar el tiempo para el establecimiento de gramíneas forrajeras tropicales en el bioma del “Cerrado”, con base en rasgos morfogenéticos y estructurales. Se distribuyeron tres cultivares (Paiaguás, Ipyporã y Marandu) de Brachiaria brizantha (Sin. Urochloa brizantha) y dos cultivares (Quênia y Tamani) de Panicum maximum (Sin. Megathyrsus maximus) en un diseño de bloques al azar con cuatro repeticiones. Los rasgos morfogenéticos y estructurales del pasto se evaluaron desde el día 35 hasta el día 65 después de la siembra, a intervalos de siete días. La altura del dosel aumentó linealmente con el período de establecimiento, en todos los cultivares. En los cultivares de Megathyrsus, la densidad de macollos disminuyó a medida que avanzaba el período experimental, mientras que el número de macollos en los cultivares de Urochloa aumentó. Los cultivares Ipyporã y Marandu tuvieron las tasas más altas de aparición foliar. Las tasas de elongación foliar más bajas se presentaron en los cultivares Paiaguás, Ipyporã y Tamani, y las tasas de elongación más altas en el cv. Quênia. Como resultado, el cv. Quênia mostró los valores más altos de longitud foliar final (64.9 cm) y masa de lámina foliar (3,352.9 kg MS ha-1). La mayor tasa de senescencia del cv. Tamani (2.1 cm macollo-1 d-1) dio como resultado que el mayor porcentaje de material muerto (1,815.5 kg ha-1) se encontrara en la masa de forraje de este cultivar. Los cultivares Paiaguás, Marandu y Tamani se establecieron a los 44 d, mientras que los cv. Quênia e Ipyporã se establecieron a los 51 y 58 días después de la siembra, respectivamente, en el Cerrado brasileño.

https://doi.org/10.22319/rmcp.v13i3.6039 17 downloads

Loss of an eye to mucormycosis following corticosteroid therapy for COVID-19
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Rodrigues, Mariana Gonçalves

; Sekiguchi, William Kazunori

; Gonçalves, Sérgio

; Casal, Yuri Reis

; Frassetto, Fernando Pereira

; Silva, Vinicius Trindade Gomes da

; Santo, Marcelo Prudente do Espírito

; Magri, Marcello Mihailenko Chaves

Autopsy and Case Reports

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2022, Volume 12 elocation e2021345

Abstract: En | Text: En | PDF: En

ABSTRACT Mucormycosis is a rare, sometimes severe fungal infection that has emerged as a possible complication of COVID-19. We report a case of a non-diabetic, apparently immunocompetent patient diagnosed with rhino-orbital-cerebral mucormycosis shortly after COVID-19 treatment with dexamethasone. The patient received optimized systemic antifungal therapy and extensive surgical treatment. So far, four months after the last hospital discharge, the patient has been in good general condition. This case is a dramatic reminder that beneficial corticosteroid therapy in general inevitably carries a risk of opportunistic infection, and corticosteroid therapy for COVID-19 risks orbital-rhinocerebral mucormycosis that clinicians should watch for with vigilance.

https://doi.org/10.4322/acr.2021.345

Valoración del riego de adicción a tramadol en pacientes con dolor crónico no oncológico
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Robayo-González, Claudia X.

; Quevedo-Buitrago, William G.

; Chaves-Silva, Diana C.

; Gónima-Valero, Edmundo

Revista de Salud Pública

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oct 2021, Volume 23 N. 5 Pages 1 -

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

RESUMEN Objetivo El manejo del dolor crónico no oncológico con analgésicos opioides ha sido de importancia para el control de los síntomas y el restablecimiento de la actividad. Sin embargo, el riesgo de adicción asociado a estos medicamentos es ampliamente conocido y evaluado. Este estudio evalúa el riesgo de adicción que presentaban los pacientes con manejo de tramadol describiendo los factores más frecuentes en la muestra estudiada frente a lo reportado en la literatura. Métodos Una muestra de 76 pacientes de una clínica de dolor que están en manejo con tramadol se les administra un cuestionario con características demográficas y con la escala Opioid Risk Tool para el riesgo de adicción. Resultados El 57,89% de los sujetos fueron mujeres; el 55,20% se encontraba entre los 29 y 59 años. El riesgo de adicción moderado se encontró en el 9,09% de las mujeres y en el 37,05% de los hombres. La inclusión de otras enfermedades como ansiedad y trastorno de estrés postraumático aumenta el riesgo de adicción a severo en 6,06% de los hombres. Conclusiones La valoración del riesgo de adicción a opioides debe tener en cuenta los factores encontrados en la población colombiana.

ABSTRACT Objective The management of chronic non-cancer pain with opioid analgesics has been important for the control of symptoms and the restoration of activity, however, the risk of addiction associated with these drugs is widely known. This study evaluates the risk of addiction presented by patients with tramadol treatment, describing the most frequent factors in the sample studied compared to what was reported in the literature. Methods A sample of 76 patients from a pain clinic who are being managed with tramadol are administered a questionnaire with demographic characteristics and with the Opioid Risk Tool scale for the risk of addiction. Results 57.89% of the subjects were women, 55.20% were affected between 29 and 59 years. A moderate risk of addiction was found in 9.09% of women and 37.05% of men. The inclusion of other diseases such as anxiety and post-traumatic stress disorder increases the risk of addiction to severe in 6.06% of men. Conclusions The assessment of the risk of addiction to opioids must consider the factors found in the Colombian population.

https://doi.org/10.15446/rsap.v23n5.94305

Impact of the COVID-19 Pandemic on Physicians Working in the Head and Neck Field
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Imamura, Rui

; Bento, Ricardo F.

; Matos, Leandro L.

; William Jr., William N.

; Marta, Gustavo N.

; Chaves, Aline L. F.

; Castro Jr., Gilberto de

; Kowalski, Luiz P.

International Archives of Otorhinolaryngology

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jan 2021, Volume 25 N. 1 Pages 150 - 159

Abstract: En | Text: En | PDF: En

Abstract Background With the COVID-19 pandemic, the clinical practice of physicians who work in the head and neck field in Brazil dropped dramatically. The sustained impact of the pandemic is not known. Methods An anonymous online survey was distributed to Brazilian otolaryngologists, head and neck surgeons, medical and radiation oncologists, asking about their clinical practice in the third to fourth months of the pandemic. Results The survey was completed by 446 specialists. About 40 % reported reduction of more than 75 % in outpatient care. A reduction of 90 % to 100 % in airway endoscopies was reported by 50 % of the responders, and the same rate of reduction regarding surgeries (pediatric or nasosinusal) was reported by 80 % of them. Family income decreased by 50 %, and the psychological burden on physicians was considerable. The availability of personal protective equipment and safety precautions were limited, especially in the public sector. Conclusion COVID-19 is still impacting the head and neck field, and safety concerns may hinder the prompt resumption of elective care.

https://doi.org/10.1055/s-0040-1722254 214 downloads

Chlorogenic acid improves the quality of boar semen processed in Percoll
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Rabelo, Stenia Severo

; Resende, Carla Oliveira

; Pontelo, Thais Preisser

; Chaves, Bruna Resende

; Pereira, Bárbara Azevedo

; Silva, William Eduardo da

; Peixoto, Juliano Vogas

; Pereira, Luciano José

; Zangeronimo, Márcio Gilberto

Animal Reproduction

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2020, Volume 17 N. 1 elocation e20190021

Abstract: En | Text: En | PDF: En

Abstract This study aimed to evaluate if the addition of chlorogenic acid (ChA) to semen extenders improves the quality of cooled boar semen processed in Percoll. The experimental design was randomized blocks (ejaculates) in a 2×3 factorial (with or without Percoll, and three antioxidant systems: a negative control, without supplementation, a positive control – vitamin E, and ChA), totaling six treatments and 12 repetitions. ChA and vitamin E (VE) were added at 4.5 mg/ml and 400 μg/ml in extender, respectively. At 0, 48 and 72h of storage at 15ºC, 80 ml insemination doses each containing 2.0 billion sperm cells were submitted to centrifugation in Percoll. The use of Percoll impaired (P<0.01) all motility patterns but decreased (P<0.01) the number of abnormal cells at 0, 48 and 72h of storage. Both VE and ChA improved (P<0.05) the total motility after Percoll processing, but only in semen stored for 48h. The same effect was not observed (P>0.05) in semen stored for 72h. ChA improved (P<0.05) the total motility of the semen stored for 72h, but this effect was not observed (P>0.05) when the semen was processed in Percoll. The antioxidants had no effect (P>0.05) on the viability and integrity of the acrosome, but ChA reduced (P<0.05) the number of abnormal cells at 0h, while VE increased the number of abnormal cells in semen stored for 72h, independent of the use of Percoll. There was no effect (P>0.05) of antioxidants or Percoll on the concentration of malondialdehyde in seminal plasma. The use of Percoll had no effect (P>0.05) on the cholesterol efflux, but ChA increased (P<0.05) this parameter at 0h and reduced (P<0.05) in the semen stored for 72h not processed with Percoll. In conclusion, the addition of ChA to semen extenders improved the quality of boar semen processed or not in Percoll.

https://doi.org/10.21451/1984-3143-ar2019-0021 458 downloads

Growth performance of Astyanax altiparanae fed with plant and/or animal lipid sources
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Chaves, William

; Almeida, Érica C.

; Carneiro, Cristiana L. S.

; Magnone, Larisa

; Martins, Nilton J. T.

; Bessonart, Martin

; Zuanon, Jener A. S.

; Salaro, Ana L.

Revista de Ciencias Agrícolas

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dec 2019, Volume 36 N. spe Pages 63 - 70

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

RESUMEN El lambari, Astyanax altiparanae, exhibe un gran potencial para la acuicultura debido a su crecimiento omnívoro, rápido y fácil de cautiverio. A pesar de que el metabolismo de los lípidos en los peces está directamente relacionado con los lípidos de la dieta, lo que puede conducir a cambios en el crecimiento de los peces, no se ha establecido mucho sobre las fuentes de lípidos que se pueden aplicar en la producción en cautiverio de A. altiparanae. Por lo tanto, esta investigación se realizó con el objetivo de evaluar el rendimiento del crecimiento y la composición del cuerpo de A. altiparanae alimentados con fuentes de lípidos de origen vegetal y animal. Se utilizó un experimento de diseño completamente al azar con cinco tratamientos. Los tratamientos consistieron en dietas isoproteicas e isoenergéticas, que contenían las siguientes fuentes de lípidos: T1: aceites de linaza, chía y girasol; T2: aceites de linaza y maíz; T3: aceites de linaza, chía, maíz y girasol; T4: girasol, maíz y aceites de pescado; T5: linaza, chía, girasol, aceites de maíz y grasa bovina. Cada tratamiento se repitió seis veces, las unidades experimentales consisten en 10 peces (peso promedio: 4.0 + 0.5 g) colocados en un acuario que contiene 80 litros de agua desclorada. Se compararon los parámetros de rendimiento de crecimiento entre los tratamientos mediante la aplicación de un análisis de varianza unidireccional (ANOVA) con una significancia del 5% (P <0.05). Los resultados revelaron que tanto el rendimiento del crecimiento como la composición del cuerpo de A. altiparanae no se vieron afectados por la fuente de lípidos, lo que indica que estos peces pueden usar eficientemente tanto fuentes de lípidos vegetales como mezclas de fuentes de lípidos vegetales y animales sin ninguna desventaja de crecimiento.

ABSTRACT The lambari, Astyanax altiparanae, exhibits a great potential for aquaculture due to its omnivory, rapid growth and ease captive production. Despite of fish lipid metabolism being directly related to the dietary lipid consumed, which may lead to changes in fish growth, nothing much have been established regarding the lipid sources that can be applied in A. altiparanae captive production. Thus, this present research was conducted aiming to evaluate the growth performance and whole body composition of A. altiparanae fed with lipid sources of plant and/or animal origins. Were used a Completely Randomized design experiment with five treatments. The treatments consisted of isoproteic and isoenergetic diets, containing the following lipid sources: T1: linseed, chia and sunflower oils; T2: linseed and corn oils; T3: linseed, chia, corn and sunflower oils; T4: sunflower, corn and fish oils; T5: linseed, chia, sunflower, corn oils and bovine fat. Each treatment was replicated six times, where the experimental units consists of 10 fishes (averaged weight: 4.0 + 0.5 g) placed in an aquarium containing 80L of dechlorinated water. Were compared the growth performance parameters among the treatments by applying an one-way analysis of variance (ANOVA) at 5% significance (P < 0.05). The results revealed that both growth performance and whole body composition of A. altiparanae were not affected by the lipid source, which indicate that these fishes can efficiently use both vegetable lipid sources as well as mixtures of vegetable and animal lipid sources without any growth disadvantages.

https://doi.org/10.22267/rcia.1936e.107 343 downloads

Análisis de la composición y estructura del bosque secundario en el Refugio Nacional de Vida Silvestre Ostional, Guanacaste, con miras a su restauración
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Brenes-Chaves, Laura

; Méndez-Cartín, Ana Lucía

; Sánchez-Toruño, Henry

; Montero-Flores, William

; Barquero-Elizondo, Ana Isabel

; Hernández-Sánchez, Luis Gustavo

Revista Forestal Mesoamericana Kurú

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dec 2019, Volume 16 N. 39 Pages 33 - 42

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

Resumen En las décadas de los 60’s y 70’s, se generó una pérdida de cobertura forestal que afectó a la provincia de Guanacaste, ocasionando una degradación del bosque de costa, ecosistema único debido a la capacidad de adaptación de las especies a las condiciones abióticas. Esto impactó negativamente a las tortugas marinas, que han sufrido un desbalance entre la cantidad de machos y hembras, debido al aumento de la temperatura de la arena, a causa de la pérdida de cobertura boscosa. Esto motivó al Refugio Nacional de Vida Silvestre Ostional (RNVSO) a crear un corredor biológico costero, para el cual requieren conocer la estructura y composición de este bosque, con el fin de proponer las especies a utilizar en la restauración de estos sitios. En el presente estudio, se instalaron cuatro parcelas permanentes de muestreo (PPM) de 2 400 m2, donde se evaluaron variables de diámetro, nombre científico y condiciones de estructura vertical. Se encontraron 353 individuos/ ha, pertenecientes a 36 especies y 17 familias botánicas; así como un área basal 27,24 m2/ha. Las familias más representativas fueron Malvaceae (27,58 % IVI), Rubiaceae (18,38 % IVI) y Anacardiaceae (12,52 % IVI); mientras que las especies más dominantes y abundantes fueron Pachira quinata (45,63%), Callycophyllum candidissimum (15,11 %) y Spondias mombin (12,28 %). Al comparar con otros estudios, se encuentran similitudes en diversidad y composición con otros bosques costeros de la misma provincia, existiendo diferencia en la estructura con respecto a bosques no protegidos. Estos ecosistemas se asemejan en composición y estructura a los bosques secos, a pesar de encontrarse en una zona de vida de transición a bosque húmedo, lo que puede asociarse a las condiciones abióticas únicas que enfrentan y a su nivel de fragmentación.

Abstract During the decades of the 60’s and 70’s there was a period of forest cover loss that affected Guanacaste province, causing a degradation of the coastal forest, which is an unique ecosystem due to the species ability to adapt to abiotic conditions. The above, negatively impacted sea turtles, which have suffered an imbalance between the number of males and females, due to the increase of sand temperature associated to the loss of forest cover. This situation motivated the Ostional National Wildlife Refuge (RNVSO) to create a coastal biological corridor, for which they need to know the structure and composition of this forest in order to propose species to be used in the restoration of this degraded sites. In this study, four permanent sampling plots (PSP of 2 400 m2 were installed, where the variables diameter, scientific name, and vertical structure conditions were evaluated. A total of 353 individuals/ha were found, belonging to 36 species and 17 botanical families, with a basal area of 27,24 m2/ha. The most representative families were Malvaceae (27,58% IVI), Rubiaceae (18,38% IVI) and Anacardiaceae (12,52% IVI); while the most dominant and abundant species were Pachira quinata (45,63%), Callycophyllum candidissimum (15,11%) and Spondias mombin (12,28%). When compared with other studies, similarities in diversity and composition were found with other coastal forests of the same province, being a difference in the structure with respect to non-protected forests. The coastal forests of the RNVSMO are similar in composition and structure to the dry forests, despite being in a transition zone to the humid forest, which may be associated with the unique abiotic conditions that the species face and their level of fragmentation.

https://doi.org/10.18845/rfmk.v16i39.4417 1861 downloads

10.

Asociación entre abejas sin aguijón (Apidae, Meliponini) y la flora del bosque seco en la región norte de Guanacaste, Costa Rica
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Barquero-Elizondo, Ana Isabel

; Aguilar-Monge, Ingrid

; Méndez-Cartín, Ana Lucía

; Hernández-Sánchez, Gustavo

; Sánchez-Toruño, Henry

; Montero-Flores, William

; Herrera-González, Eduardo

; Sánchez-Chaves, Luis Alejandro

; Barrantes-Vásquez, Alejandra

; Gutiérrez-Leitón, Milena

; Mesén-Montano, Isaac

; Bullé-Bueno, Francisco

Revista de Ciencias Ambientales

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jun 2019, Volume 53 N. 1 Pages 70 - 91

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

Resumen Las abejas sin aguijón son importantes polinizadores en regiones tropicales y subtropicales; están asociadas a la flora que les proporciona alimento, sitios para anidamiento, resinas, savia y exudados. Se buscó determinar la asociación entre abejas y flora en el sector cerro El Hacha (bosque primario intervenido) y sector Pocosol (bosque secundario) del Parque Nacional Guanacaste, donde se inventariaron los nidos en 33 parcelas de 20 x 20 m². Se colectó polen de plantas dentro de las parcelas y alrededor de los nidos (radio de 500 m) y se recolectaron y analizaron cargas corbiculares de polen de abejas atrapadas con redes entomológicas en la entrada de los nidos. En el cerro El Hacha se colectó polen de tres nidos de Scaptotrigona pectoralis y en Pocosol se colectó polen de dos nidos de Trigona fulviventris. Se obtuvo una densidad de 4.43 nidos/ha-1, de las especies: Tetragonisca angustula, Tetragona ziegleri, Plebeia frontalis y Trigona fulviventris. Los nidos se encuentran en los troncos de árboles, con preferencia por el Quercus oleoides, donde se halló el 50 % de estos. Las plantas alimenticias utilizadas por S. pectoralis en el cerro El Hacha, fueron: Cupania guatemalensis (30 %), Byrsonima crassifolia (21 %) y Cedrela odorata (15 %). Mientras para T. fulviventris en el sector Pocosol las plantas más importantes fueron Baltimora recta (26 %), Dorstenia contrajerva (9 %) y Desmodium sp. (9 %). Es evidente el importante papel que cumple la especie arbórea Quercus oleoides para la conservación de las poblaciones de estos insectos.

Abstract Stingless bees are important pollinators in tropical and subtropical regions; they are associated with the flora that provides them with food, sites for nesting, resins, sap and exudates. We sought to determine the association between bees and flora in the cerro El Hacha sector (intervened primary forest) and the Pocosol sector (secondary forest) of the Guanacaste National Park, where the nests were inventoried in 33 plots of 20 x 20 m². Pollen from plants was collected within the plots and around the nests (radius 500 m); also, we collected and analyzed corbicular charges of pollen from bees trapped with entomological nets at the entrance of the nests. In the cerro El Hacha sector, pollen was collected from three nests of Scaptotrigona pectoralis and in the Pocosol sector we collected pollen from two nests of Trigona fulviventris. A density of 4.43 nests / ha-1 was obtained from the species: Tetragonisca angustula, Tetragona ziegleri, Plebeia frontalis and Trigona fulviventris. The nests were found in the trunks of trees, with preference for Quercus oleoides, where 50 % of them were found. The food plants used by S. pectoralis in cerro El Hacha were: Cupania guatemalensis (30 %), Byrsonima crassifolia (21 %) and Cedrela odorata (15 %). While for T. fulviventris in the Pocosol sector the most important plants were Baltimora recta (26 %), Dorstenia contrajerva (9 %) and Desmodium sp. (9 %). The important role played by the tree species Quercus oleoides for the conservation of the populations of these insects is evident.

https://doi.org/10.15359/rca.53-1.4 1158 downloads

11.

Principales plantas de importancia alimenticia para la abeja nativa sin aguijón Trigona fulviventris (Guérin-Méneville) en Pocosol, Guanacaste, Costa Rica.
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Barrantes-Vásquez, Alejandra

; Sánchez-Chaves, Luis

; Hernández-Sánchez, Gustavo

; Flores, William Montero-

Revista Forestal Mesoamericana Kurú

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jun 2019, Volume 16 N. 38 Pages 13 - 23

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

Resumen En este estudio, se determinaron las principales plantas de importancia nutricional para la abeja sin aguijón Trigona fulviventris (Guérin- Méneville), en un fragmento de bosque seco secundario en Pocosol, Área de Conservación Guanacaste durante la época lluviosa. Mediante la colecta de individuos de T. fulviventris se obtuvo un total de 26 tipos polínicos, cuyas especies más representativas correspondieron a los estratos de herbáceas y arbustos. Adicionalmente, pese a no observar el comportamiento fenológico habitual a la época del año, se realizó una colecta de plantas con el propósito de abarcar las especies de mayor importancia dentro del rango de vuelo de esta especie de abeja. Para el análisis del polen se utilizaron métodos palinológicos cuyos resultados mostraron una convergencia del 27 % de coincidencia, al comparar el polen extraído de las abejas con el de las plantas colectadas. Asimismo, con ayuda de índices ecológicos se midió la riqueza, dominancia y uniformidad de las plantas colectadas. De esta forma se determinó la presencia de las especies de mayor representatividad al momento del estudio en el sitio (Baltimora recta y Dorstenia contrajerva). Finalmente, se logró documentar el comportamiento de T. fulviventris con respecto a la búsqueda de recursos nutricionales limitados (2015).

Abstract In this study, the main important plants collected by the stingless bee Trigona fulviventris were determined in a secondary dry forest fragment in Pocosol, Guanacaste during the rainy season. A total of 26 pollen types were obtained by collecting individuals of Trigona fulviventris these corresponded mainly representative species of herbs and shrubs. In addition, although there was unusual phenology through the year of the study, a collection of plants was carried out in order to covering the most important species according within the flight range of this species (300-500 m). For the palinological analysis a combination of methods were used and the results showed a convergence of 27% of coincidence when comparing both pollen collected by the bees and plant sources. In addition, the presence of the most representative species at the time of study at the site (Baltimora recta and Dorstenia contrajerva) was determined using ecological indexes. Moreover it was able to demonstrate a generalist behavior of T. fulviventris regarding the search for limited nutritional.

https://doi.org/10.18845/rfmk.v16i38.3992 2083 downloads

12.

Atualização das Diretrizes em Cardiogeriatria da Sociedade Brasileira de Cardiologia – 2019
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Feitosa Filho, Gilson Soares

; Peixoto, José Maria

; Pinheiro, José Elias Soares

; Afiune Neto, Abrahão

; Albuquerque, Afonso Luiz Tavares de

; Cattani, Álvaro César

; Nussbacher, Amit

; Camarano, Ana Amelia

; Sichinels, Angela Hermínia

; Sousa, Antonio Carlos Sobral

; Alencar Filho, Aristóteles Comte de

; Gravina, Claudia F.

; Sobral Filho, Dario Celestino

; Pitthan, Eduardo

; Costa, Elisa Franco de Assis

; Duarte, Elizabeth da Rosa

; Freitas, Elizabete Viana de

; Moriguchi, Emilio Hideyuki

; Mesquita, Evandro Tinoco

; Fernandes, Fábio

; Fuchs, Felipe Costa

; Feitosa, Gilson Soares

; Pierre, Humberto

; Pereira Filho, Ilnei

; Helber, Izo

; Borges, Jairo Lins

; Garcia, Jéssica Myrian de Amorim

; Souza, José Antonio Gordillo de

; Zanon, José Carlos da Costa

; Alves, Josmar de Castro

; Mohallem, Kalil Lays

; Chaves, Laura Mariana de Siqueira Mendonça

; Moura, Lídia Ana Zytynski

; Silva, Márcia Cristina Amélia da

; Toledo, Maria Alice de Vilhena

; Assunção, Maria Elisa Lucena Sales de Melo

; Wajngarten, Mauricio

; Gonçalves, Mauro José Oliveira

; Lopes, Neuza Helena Moreira

; Rodrigues, Nezilour Lobato

; Toscano, Paulo Roberto Pereira

; Rousseff, Pedro

; Maia, Ricardo Antonio Rosado

; Franken, Roberto Alexandre

; Miranda, Roberto Dischinger

; Gamarski, Roberto

; Rosa, Ronaldo Fernandes

; Santos, Silvio Carlos de Moraes

; Galera, Siulmara Cristina

; Grespan, Stela Maris da Silva

; Silva, Teresa Cristina Rogerio da

; Esteves, William Antonio de Magalhães

Arquivos Brasileiros de Cardiologia

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may 2019, Volume 112 N. 5 Pages 649 - 705

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

https://doi.org/10.5935/abc.20190086 15622 downloads

13.

Formación de Recuerdos Flashbulb en población colombiana
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Tamayo-Agudelo, William

; Cárdenas, Julián

; Chaves Castaño, Liliana

Revista de Psicología (PUCP)

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2019, Volume 37 N. 1 Pages 99 - 128

The present research examines the formation of flashbulb memories in a sample of Colombians. Flashbulb Memories (FBM) are autobiographical memories related to the context of receiving shocking public news. A sample of 380 respondents (171 men and 209 women) aged from 20 to 89 years old (M = 37.05; SD = 13.36) conducted a test between 4-19 days after worldwide breaking news. Factor analysis, descriptive analysis and structural equation models were applied. Four models described by the literature on flashbulb memories were tested. Results show that models proposed by Finkenauer et al. (1998) and Er (2003) predict the formation of flashbulb memories through an indirect path. The models proposed by Brown and Kulik (1977) and Conway et al. (1994) do not predict the formation of flashbulb memories in news related to international terrorism. However, goodness of fit indexes were better for Brown and Kulik’s model than for the other three models.

La présente recherche a pour but d’étudier la formation des Souvenirs Flashbulb (FBM) sur un échantillon de population colombienne. On appelle FBM le type de souvenir autobiographique qui recueille des informations sur le contexte de réception d’informations publiques imposantes. Trois-cent quatre-vingts personnes de 20 à 89 ans (171 hommes et 209 femmes), ont répondu à un questionnaire de FBM, de 4 à 19 jours après la publication d’informations qui ont commotionné la population mondiale. Des analyses factorielles, des analyses descriptives et des équations structurelles ont été effectuées pour chaque groupe d’articles du questionnaire. Quatre modèles de formation ont été testés. Deux modèles, celui de Finkenauer et al. (1998) et Er (2003), ont expliqué la formation de la FBM par un chemin indirect qui implique la mémoire de l’événement comme prédicteur de la FBM. Toutefois, le modèle de Finkenauer et al. (1998), a obtenu des taux d’ajustement général plus adéquats. Les modèles proposés par Brown et Kulik (1977) et Conway et al. (1994), n’ont pas prédit la formation de la FBM dans des informations d’intérêt sur le terrorisme international.

La presente investigación tuvo como objetivo estudiar la formación de los Recuerdos Flashbulb (FBM) en una muestra de población colombiana. Se denomina FBM al tipo de recuerdo autobiográfico que recoge información acerca del contexto de recepción de noticias públicas impactantes. Trescientas ochenta personas (171 hombres y 209 mujeres) entre los 20 y los 89 años respondieron un cuestionario de FBM entre los 4 y 19 días después de publicada una noticia que conmocionó a la población mundial. Se realizaron análisis factoriales para cada grupo de ítems del cuestionario, análisis descriptivos y ecuaciones estructurales. Cuatro modelos de formación fueron probados. Dos modelos, el de Finkenauer et al. (1998) y Er (2003), explicaron la formación de la FBM por un camino indirecto que involucra la memoria del evento como predictor de la FBM. Sin embargo, el modelo de Finkenauer et al. (1998), obtuvo índices de ajuste general más adecuados. Los modelos planteados por Brown y Kulik (1977) y Conway et al. (1994) no predijeron la formación de la FBM en una noticia de interés sobre terrorismo internacional.

Esta pesquisa teve como objetivo estudar a formação das Lembranças Flashbulb (FBM) em uma amostra de população colombiana. Chama-se FBM ao tipo de lembranças autobiográficas com informação sobre o contexto de recepção de notícias públicas impactantes. Trezentas e oitenta pessoas (171 homens e 209 mulheres) entre 20 e 89 anos responderam um inquérito FBM entre 4 e 19 dias depois da publicação de uma notícia perturbante a nível mundial. Fizeram-se análises fatoriais para cada grupo de itens do inquérito, análises descritivos e equações estruturais. Testaram-se quatro modelos de formação. Dois modelos, o de Finkenauer et al. (1998) e o Er (2003), explicaram a formação da FBM de maneira indireta, envolvendo a memória do evento como preditor da FBM. Porém, o modelo Finkenauer et al. (1998) obteve índices de ajuste geral mais apropriados. Os modelos de Brown e Kulik (1977) e Conway et al. (1994) não predisseram a formação da FBM em uma notícia de interesse sobre terrorismo internacional.

https://doi.org/10.18800/psico.201901.004

14.

Agrometeorological analysis of the soybean potentiality in an Amazonian environment
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Lima, Marcus José Alves de

; Oliveira, Evandro Chaves de

; Sampaio, Leila Sobral

; Fraisse, Clyde William

; Souza, Paulo Jorge de Oliveira Ponte de

Pesquisa Agropecuária Tropical

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2019, Volume 49 elocation e54595

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

RESUMO O uso de modelos de culturas que integram informações de solo, clima, cultivar e práticas de manejo pode ampliar a compreensão das interações entre o sistema de cultivo da soja e a variabilidade climática local. Objetivou-se analisar a potencialidade da soja em ambiente de produção amazônico, bem como determinar uma janela ótima de semeadura, por meio de modelagem agrometeorológica. Um modelo de cultura foi utilizado para simular o rendimento da soja para 18 datas de semeadura, ao longo de uma série histórica de 33 anos de dados meteorológicos, sob condições potencial e atingível. O rendimento potencial da soja variou de 3.785 kg ha-1 a 5.114 kg ha-1, devido à disponibilidade energética local. Por outro lado, o rendimento médio atingível variou de 557 kg ha-1 a 4.700 kg ha-1, devido, principalmente, às condições de umidade do solo. A menor diferença entre o rendimento potencial e o atingível foi observada entre as datas de semeadura 01 de janeiro e 15 de fevereiro, sendo que, nesta janela, a probabilidade de se obterem rendimentos acima de 3.500 kg ha-1 foi superior a 90 %.

ABSTRACT The use of crop models that integrate soil, climate, cultivar and management information may broaden the understanding of the interactions between soybean cropping system and local climate variability. This study aimed to analyze the potentiality of soybean in an Amazonian production environment, as well as to determine an optimal sowing window via agrometeorological modeling. A crop model was programmed to simulate the soybean yield for 18 sowing dates, obtained along 33 years of climatic data, under attainable and potential conditions. The simulated potential of soybean yield ranged from 3,785 kg ha-1 to 5,114 kg ha-1, owing to the local energy availability, whereas the average attainable yield ranged from 557 kg ha-1 to 4,700 kg ha-1, mainly because of the soil moisture conditions. The smallest difference between the potential and attainable yields was observed in the sowing dates from 01-Jan to 15-Feb. For this window, the probability of obtaining yields above 3,500 kg ha-1 was higher than 90 %.

https://doi.org/10.1590/1983-40632019v4954595 725 downloads

15.

Pericardite constritiva por tuberculose, uma condição de difícil diagnóstico
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Lagoeiro Jorge¹, Antonio José

; de Andrade Martins¹, Wolney

; Luiz Batista da Costa², Washington

; Kiyomura Rosslli³, Augusto

; Chaves Ferreira Coelho³, Leonardo

; Shinji Nobre Soussume³, William

Insuficiencia cardíaca

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jun 2018, Volume 13 N. 2 Pages 93 - 96

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

A pericardite constritiva (PC) é uma condição clínica caracterizada pela presença de inflamação do tecido pericárdico, culminando em constrição cardíaca. A tuberculose pode acometer o pericárdio e levar à uma condição clínica conhecida como pericardite tuberculosa (PT). Relata-se o caso de um paciente jovem, internado com queixas de insuficiência cardíaca e quadro de PC em que o diagnóstico etiológico de PT foi confirmado por exclusão e resposta à terapêutica.

Constrictive pericarditis (CP) is a clinical condition characterized by the presence of inflammation of the pericardial tissue, culminating in cardiac constriction. Tuberculosis can affect the pericardium and lead to a clinical condition known as tuberculous pericarditis (TP). We report the case of a young patient hospitalized with complaints of heart failure and CP in whom the etiological diagnosis of TP was confirmed by exclusion and response to therapy.

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issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

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