Resumo O trabalho objetivou avaliar a relação peso-comprimento e o fator de condição, caracterizando a biometria, anatomia, histologia e densidade volumétrica do fígado de Brycon amazonicus, em diferentes estágios de crescimento corporal. O experimento utilizou vinte espécimes em quatro fases de crescimento corporal (PI, PII, PIII e PIV) colhidos a cada 90 dias, contendo cinco espécimes, cada grupo. Os fígados foram dissecados, pesados (g) e processados rotineiramente pela técnica da hematoxilina e eosina. Os dados foram submetidos à análise de variância, teste de correlação de Pearson e regressão linear. A equação que representou a relação peso-comprimento foi W = 0,05902 x L2,63, com crescimento alométrico negativo, mas com fator de condição relativo igual a 1,0. O fígado apresentou-se dividido em três lobos com a vesícula biliar próxima ao lobo direito e sua cor variou de vermelho claro a vermelho escuro, não variando em relação a outras espécies de peixes. A relação hepatossomática acompanhou o crescimento corporal até a fase do grupo PII e então declinou, demonstrando o comportamento de seu desenvolvimento em Brycon amazonicus. O órgão constitui-se predominantemente por hepatócitos, seguido de vasos e capilares sinusoidais, com a morfologia histológica semelhante ao de muitas espécies de peixes. Centros melanomacrófagos foram encontrados apenas nos animais mais desenvolvidos, mas em pequena quantidade, instigando o desenvolvimento de novas pesquisas sobre esta célula, nesta espécie. Desta forma, pesquisas desta natureza permitem a caracterização de espécies de peixes, auxiliando no aperfeiçoamento de métodos de criação, compreensão de processos patológicos provocados por enfermidades, e obtenção de melhor capacidade produtiva, atendendo um mercado cada vez mais exigente e próspero.

Abstract The work aimed to evaluate the weight-length relationship and the condition factor, characterizing the biometry, anatomy, histology and volumetric density of the liver of Brycon amazonicus, in different stages of body growth. The experiment used twenty specimens in four stages of body growth (PI, PII, PIII and PIV) harvested every 90 days, containing five specimens, each group. The livers were dissected, weighed (g) and processed routinely using the hematoxylin and eosin technique. The data were submitted to analysis of variance, Pearson’s correlation test and linear regression. The equation that represented the weight-length relation was W = 0.05902 x L2.63, with negative allometric growth, but with a relative condition factor equal to 1.0. The liver was divided into three lobes with the gallbladder close to the right lobe and its color varied from light red to dark red, not varying in relation to other fish species. The hepatosomatic relationship followed body growth until the PII group stage and then declined, demonstrating the behavior of its development in Brycon amazonicus. The organ consists predominantly of hepatocytes, followed by sinusoidal vessels and capillaries, with histological morphology similar to that of many species of fish. Melanomacrophage centers were found only in the most developed animals, but in small quantities, prompting the development of new research on this cell, in this species. In this way, research of this nature allows the characterization of fish species, helping to improve breeding methods, understanding pathological processes caused by diseases, and obtaining better productive capacity, serving an increasingly demanding and prosperous market.

Abstract Introduction A higher rate of anastomotic leakage (AL) is reported after ileosigmoid anastomosis (ISA) or ileorectal anastomosis (IRA) in total or subtotal colectomy (TSC) compared with colonic or colorectal anastomosis. Themain aimof the present studywas to assess potential risk factors for AL after ISA or IRA and to investigate determinants of morbidity. Methods We identified 180 consecutive patients in a prospective referral, single center database, in which 83 of the patients underwent TSC with ISA or IRA. Data regarding the clinical characteristics, surgical treatment, and outcome were assessed to determine their association with the cumulative incidence of AL and surgical morbidity. Results Ileosigmoid anastomosis was performed in 51 of the patients (61.5%) and IRA in 32 patients (38.6%). The cumulative incidence of ALwas 15.6% (13 of 83 patients). A higher AL rate was found in patients under 50 years-old (p=0.038), in the electivelaparoscopic approach subgroup (p=0.049), and patients in the inflammatory bowel disease (IBD) subgroup (p=0.009). Furthermore, 14 patients (16.9%) had morbidity classified as Clavien-Dindo ≥ IIIA. Discussion A relatively high incidence of AL after TSC was observed in a relatively safe surgical procedure. Our findings suggest that the risk of AL may be higher in IBD patients. According to our results, identifying risk factors prior to surgerymay improve short-term outcomes.

Resumo Helmintos são endoparasitas que infectam uma variedade de espécies de aves. As infecções por endoparasitas podem causar doenças graves, podendo matar aves em cativeiro e representam um problema de manutenção e conservação. Os ovos e as formas larvais desses parasitas são geralmente eliminados nas fezes do hospedeiro. O principal objetivo deste estudo é relatar a ocorrência de ovos e oocistos em fezes de aves silvestres em cativeiro no Zoológico de Goiânia e em aves de vida livre em seu entorno. As amostras fecais foram submetidas a exame parasitológico para identificação da presença de helmintos e classificação dos ovos com base nas características morfológicas. Ovos de nematóides (Positivo/N) foram identificados como Ascaridia spp. em Brotogeris chiriri (2/2), Dromaius novaehollandiae (1/1) e Rhea americana (2/2); Ascarididae em Pavo cristatus nigripensis (1/1); Capillaria spp. em Ara chloropterus (1/1) e Penelope jacucaca (1/1); Capillaria plagiaticia em Anodorhynchus hyacinthinus (1/2) e Ara spp. (2/2); Capillaria venusta em Rhamphastus tucanus (1/2); e ovos de nematóide não identificado de Amazona amazonica (2/2). Oocistos de Eimeria spp. foram encontrados nas fezes de A. hyacinthinus (1/2). Considerando pássaros de vida livre, ovos de Diphyllobothrium spp. foram encontrados em Ardea alba (2/2) e Nycticorax nycticorax (2/3). Coinfecção de Eustrongylides spp. foi encontradada em A. alba (1/2). Esta é a primeira ocorrência de: Ascaridia spp. parasitando B. chiriri; e C. venusta parasitando R. tucanus. Em conclusão, os ovos de helmintos encontrados nas espécies de aves hospedeiras acima mencionadas são consistentes com os relatados na literatura, e os protocolos de tratamento e controle foram baseados em sua identificação.

Abstract Helminths are endoparasites that infect a variety of bird species. Endoparasite infections can cause severe diseases, including kill captive avian hosts and represents a problem to maintenance and conservation. The eggs and larval forms of these parasites are usually eliminated in the host feces. The main interest of this study is to report the occurrence of eggs and oocysts in feces from captive wild birds in Goiânia Zoo and free-living birds in its surroundings. The fecal samples were subjected to parasitological examination to identify the presence of helminths and to classify their eggs based on morphological characteristics. Eggs of nematode parasites (Positive/N) were identified as Ascaridia spp. in Brotogeris chiriri (2/2), Dromaius novaehollandiae (1/1) and Rhea americana (2/2); Ascarididae in Pavo cristatus nigripensis (1/1); Capillaria spp. in Ara chloropterus (1/1) and Penelope jacucaca (1/1); Capillaria plagiaticia in Anodorhynchus hyacinthinus (1/2) and Ara spp. (2/2); Capillaria venusta in Rhamphastus tucanus (1/2); and unidentified nematode eggs from Amazona amazonica (2/2). Eimeria spp. oocyst was founded in feces from A. hyacinthinus (1/2). Considering free-living birds, Diphyllobothrium spp. eggs were founded in Ardea alba (2/2) and Nycticorax nycticorax (2/3). Co-infection of Eustrongylides spp. was founded in A. alba (1/2). This is the first occurrence of: Ascaridia spp. parasitizing B. chiriri; and C. venusta parasitizing R. tucanus. In conclusion, the helminth eggs found in the abovementioned host bird species are consistent with those reported in the literature, and treatment and control protocols were based on their identification.

Resumo O objetivo deste estudo foi relatar o primeiro registro de Trichodina heterodentata em tuviras Gymnotus carapo. Um cultivo de tuviras no município de Jataí, estado de Goiás, na região Centro-Oeste do Brasil, apresentou taxas de mortalidade de peixes de 3-4% por tanque. A análise macroscópica constatou que os peixes tinham lesões na pele e brânquias. Raspados do tegumento e brânquias foram confeccionadas e secas ao ar à temperatura ambiente e impregnadas com nitrato de prata para identificar as espécies de Trichodinidae causadoras das lesões. Os tricodinídeos foram identificados como T. heterodentata, e suas características foram comparadas com as de T. heterodentata registradas para outras espécies de peixes hospedeiros. Observou-se que a presença de T. heterodentata estava associada ao manejo inadequado dos peixes, baixa qualidade da água, altas taxas de densidade de estocagem e manejo nutricional inadequado.

Abstract The aim of this study was to report the first record of Trichodina heterodentata in banded knifefish Gymnotus carapo. Banded knifefish cultivated in the municipality of Jataí, state of Goiás, in the central western region of Brazil, experienced fish mortality rates of 3-4% per tank. Macroscopic analysis found that fish had lesions on their skin and gills. Smears of the integument and gills were confectioned and air-dried at room temperature and impregnated with silver nitrate to identify the Trichodinidae species causing the lesions. The trichodinid were identified as T. heterodentata, and their characteristics were compared to those from T. heterodentata recorded from other species of host fish. It was observed that the presence of T. heterodentata was associated with inadequate fish management, low water quality, high rates of stocking density, and inadequate nutritional management.

Resumo Os ácaros nasais são comumente encontrados em beija-flores (Apodiformes). Na maioria dos casos, os ácaros foram relatados como endoparasitas, parasitando o sistema respiratório, particularmente as câmaras nasais anteriores, a laringe, a traqueia, os pulmões e os sacos aéreos e conjuntivais. No entanto, alguns ácaros são transportados apenas por beija-flores, pois flores servem como fonte de nutrientes para esses pequenos ácaros, assim como para Apodiformes tropicais alimentados de néctar em seu habitat natural. De agosto de 2012 a maio de 2014, beija-flores foram capturadas com redes de neblina e examinadas quanto à presença de ácaros nasais (identificados de acordo com chaves específicas) nos biomas Pantanal e Cerrado, no estado do Mato Grosso, Centro-Oeste do Brasil. No total, 76 exemplares Apodiformes da família Trochilidae foram capturados e 20 fêmeas de ácaros nasais, identificados como pertencentes ao gênero Rhinoseius, foram coletados de oito hospedeiros (10,5%), das seguintes espécies: Amazilia fimbriata, Amazilia versicolor, Eupetonema macroura e Thalurania furcata. Rhinoseius spp. foi relatado em muitos ecossistemas nas Américas, incluindo o Brasil, no entanto, este é o primeiro relato em Apodiformes do bioma Pantanal. Os ácaros foréticos não são responsáveis por danos diretos à população de Apodiformes, pois não são patogênicos. No entanto, eles competem por comida com beija-flores e diminuem a quantidade de comida disponível no ambiente. Eles também afetam a dinâmica reprodutiva das plantas, se alimentam de pólen e interferem nas interações da biodiversidade em que vivem.

Abstract Nasal mites are commonly found in hummingbirds (Apodiformes). In most cases, endoparasitic mites were reported to parasitize the respiratory system, particularly the anterior nasal chambers, larynx, trachea, lungs, and the air and conjunctival sacs. However, some mites are only carried by hummingbirds, because flowers serving as a nutrient source for these small mites, such as for Apodiformes, a tropical nectar-feeding in their natural habitat. From August 2012 to May 2014, humminbirds were captured using mist nets, and examined for the presence of nasal mites (identified according to specific keys) in the Pantanal, and Cerrado biomes, from the Mato Grosso state, midwestern Brazil. Overall, 76 Apodiform specimens, from the Trochilidae family were captured, and 20 female nasal mites, identified as being from the Rhinoseius genus, were collected from eight hosts (10.5%), of the following species: Amazilia fimbriata, Amazilia versicolor, Eupetonema macroura, and Thalurania furcata. The Rhinoseius spp. has been reported on, in many ecosystems in the Americas, including Brazil, however, this is the first report on Apodiformes from the Pantanal biome. Phoretic mites are not responsible for direct damage to the population of Apodiformes, as they are not pathogenic. However, they compete for food with hummingbirds and decrease the quantity of food available in the environment. They also affect the reproductive dynamics of plants, feed on pollen, and interfere with the intricacies of the biodiversity where they live.

ABSTRACT The aim of this study was to conduct the sanitary characterization of the fishing marketing chain and identify the points of microbiological contamination from landing to sale, in the port of Pucallpa, Ucayali, Peru. Artisanal fishing ends with the landing of wooden boats with motor. The fish are washed in the river water, as well as plastic material and tubs within 150 m of the riverbank. The fish are transferred covered with crushed ice, plastic layers and rice husk. The facilities for sale are made of wood. There are no programs to disinfect or sanitize the area and solid waste is disposed of in a nearby sector. Work clothing is not used by fishermen, but some primary marketers use it. The physicochemical parameters of the water samples were within the normal ranges, but the presence of coliforms, E. coli and Pseudomona sp at high levels was detected. In fish, mesophiles were above the Maximum Permissible Limit (MPL) in catfish meat (Siluriforme spp); E. coli was at low levels in the meat of the three species evaluated (black prochilodus [Prochilodus nigricans], silver mylossoma [Mylossoma duriventre] and catfish); Staphylococcus aureus was present at low levels, but above the MPL in catfish, and Salmonella sp, Vibrio cholerae and V. parahemolyticus were absent. In facilities, furniture and hands of the fihermen was found E. coli and high counts of coliforms. The results show an artisanal management with poor biosecurity in the fishing marketing chain and a moderate microbiological contamination, both in facilities, in fishermen and in fish.

RESUMEN El objetivo del estudio fue caracterizar sanitariamente la cadena de comercialización pesquera e identificar los puntos de contaminación microbiológica desde el desembarque hasta la venta, en el puerto de Pucallpa, Ucayali, Perú. La pesca artesanal finaliza con el desembarque de botes de madera con motor. Los pescados son lavados en el agua del río, así como el material plástico y tinas dentro de los 150 m de la ribera. Los pescados son trasladados cubiertos con hielo picado, capas de plástico y cascarilla de arroz. Las instalaciones para la venta son de madera. No hay programas de desinfección ni sanitización del área y los residuos sólidos son eliminados en un sector aledaño. La indumentaria de trabajo no es utilizada por los manipuladores del pescado, pero lo usan algunos comercializadores primarios. Los parámetros fisicoquímicos de las muestras de agua estaban dentro de los rangos normales, pero se detectó la presencia de coliformes, E. coli y Pseudomona sp en niveles elevados. En los pescados, los mesófilos estuvieron por encima al Límite Máximo permisible (LMP) en carne de bagre (Siluriforme spp); E. coli estuvo en bajos niveles en la carne de las tres especies evaluadas (boquichico [Prochilodus nigricans], palometa [Mylossoma duriventre] y bagre); Staphylococcus aureus estuvo presente en niveles bajos, pero por encima del LMP en bagres; Salmonella sp, Vibrio cholerae y V. parahemolyticus estuvieron ausentes. En instalaciones, mobiliarios y manos de los manipuladores se encontró E. coli y recuentos elevados de coliformes. Los resultados muestran un manejo artesanal con una bioseguridad deficiente en la cadena de comercialización pesquera y una contaminación microbiológica moderada, tanto en instalaciones y manipuladores como en los pescados.

The use of effluents constitutes a viable alternative in agricultural production, transforming a waste into a useful resource, providing water and nutrients to crops. The objective of the study was to evaluate the use of treated urban effluents in the production of broccoli (Brassica oleracea var. italica). The treatments resulted from the combination of three cultivars: 'Matsuri' (C1), 'Green Pia' (C2) and 'Almanor' (C3), and two irrigation sources: treated urban effluents (EUT) and aquifer water (AC), supplied by subsurface drip irrigation during two seasons (E1 and E2). The experimental design was in divided plots. At harvest, partition of assimilates in leaves, stems and head was evaluated as well as head diameter, fresh yield and sanitary quality of the product through microbiological and parasitological analyses. The results showed significant differences (p < 0.05 Fisher) in yield for cultivars C2 and C3 (E1) irrigated with EUT. The head diameter presented differences for C2, C3 (E1) and C3 (E2). In E1 the environmental conditions were more favorable, influencing the yield of the cultivars. The sanitary quality tests of the heads determined that they were adequate for fresh consumption, demonstrating that this technology could be applied for broccoli production.

La utilización de efluentes constituye una alternativa viable en la producción agrícola, transformando un desperdicio en un recurso útil, aportando agua y nutrientes a los cultivos. El objetivo del estudio fue evaluar la utilización de efluentes urbanos tratados en la producción de brócoli (Brassica olerácea var. itálica). Los tratamientos resultaron de la combinación de tres cultivares: 'Matsuri' (C1), 'Green Pia' (C2) y 'Almanor' (C3), y dos fuentes de riego: efluentes urbanos tratados (EUT) y agua de acuífero (AC), suministrado mediante riego por goteo subterráneo durante dos temporadas (E1 y E2). El diseño experimental fue en parcelas divididas. A la cosecha se evaluó partición de asimilados en hojas, tallo y pella, diámetro de pella, rendimiento fresco y calidad sanitaria del producto mediante análisis microbiológicos y parasitológicos. Los resultados determinaron diferencias significativas (p < 0,05 Fisher) en rendimiento para los cultivares C2 y C3 (E1) regados con EUT. El diámetro de pellas presentó diferencias para C2, C3 (E1) y C3 (E2). En E1 las condiciones ambientales fueron más favorables, influyendo en el rendimiento de los cultivares. La calidad sanitaria de las pellas determinó que fueron aptas para su consumo en fresco, lo que demuestra que esta tecnología podría ser utilizada en la producción de brócoli.

The aim of this study was to determine the profile of antibiotic resistance of isolated Salmonella enterica strains during the slaughtering process of pigs in a slaughterhouse in Lima. Strains of Salmonella enterica (n=148) isolated from stool samples and mesenteric ganglia of pigs were used. The evaluation of antibiotic resistance was performed by the disc diffusion method (Kirby-Bauer). Thirteen antibiotics of frequent use in human medicine were considered, of which most of them are also used in pigs as prophylactic and growth promoters. All strains showed resistance to tetracycline and all showed sensitivity to ciprofloxacin. Likewise, all strains were resistant to at least one antibiotic.

El objetivo del presente trabajo fue determinar el perfil de resistencia antibiótica de cepas de Salmonella enterica aisladas durante el proceso de beneficio de cerdos en un matadero de Lima Metropolitana. Se utilizaron 148 cepas de Salmonella enterica aisladas de muestras de heces y ganglios mesentéricos de cerdos. La evaluación de la resistencia antibiótica se realizó por el método de difusión de disco (Kirby-Bauer). Se consideraron 13 antibióticos de uso frecuente en medicina humana, de los cuales la mayoría de ellos son usados también en cerdos como profilácticos y promotores de crecimiento. Se encontró que todas las cepas presentaron resistencia hacia la tetraciclina y todas presentaron sensibilidad frente al ciprofloxacino. Así mismo, todas las cepas fueron resistentes a por lo menos un antibiótico.

Abstract The Eastern Pacific Green Turtle (Chelonia mydas), is listed as endangered and has a circumtropical distribution. Within the Gulf of California it can be found mainly in the western waters, with some sightings to the south, in the National Park of Cabo Pulmo it is rare to find it, but there have been some sightings. This is the first record of an Eastern Pacific Green Turtle feeding in Cabo Pulmo National Park, this fact has a great importance since the park, can act as a feeding and refuge area, not only for the hawksbill turtle, but also for the Eastern Pacific Green Turtle.

Resumen La tortuga verde del Pacífico oriental (Chelonia mydas), está catalogada en peligro de extinción y tiene una distribución circuntropical. Dentro del Golfo de California se puede encontrar principalmente en la región media occidental, con algunos avistamientos hacia el sur. En el Parque Nacional de Cabo Pulmo es raro encontrar a este organismo, sin embargo, han existido algunos avistamientos anecdóticos y dentro del programa de manejo del parque está incluida esta especie. En este trabajo se reporta el primer registro de una tortuga verde del Pacífico oriental alimentándose dentro del Parque Nacional Cabo Pulmo, este hecho tiene una gran importancia, puesto que el parque puede actuar como una nueva zona de alimentación y refugio, no solo para la tortuga carey, también para la tortuga verde del Pacífico oriental.

ABSTRACT Introduction: Calendula officinalis L. is one of the plant species most used in the treatment of periodontal diseases. Objective: To determine preliminarily the quality parameters of Calendula officinalis L. jelly at 1% for stomatological use. Methods: 18 formulations were prepared using carboxymethylcellulose (CMC) and hydroxypropylmethylcellulose (HPMC) as the gelling agent, using the incorporation method. The quality parameters were determined selecting the four formulations with better technological parameters to evaluate sensory acceptance by a committee of experts. Results: The HPMC formulations presented better organoleptic characteristics and acceptable pH for its application on the buccal mucosa; as well as an area of optimal extensibility, which allowed them to be selected to carry out the sensory analysis. Conclusion: The quality parameters of the Calendula officinalis L. 1% jelly were preliminarily established the formulation encoded as HPMC 6 is selected for presenting characteristic odor to the soft extract, amber color subdued, homogeneous and glossy, pleasant taste, no lumps or grit, area of extensibility of 66.96 ± 0.91cm2, pH of 4.9 and greater sensory acceptability.

RESUMEN Introducción: La Calendula officinalis L. es una de las especies vegetales más utilizadas en el tratamiento de enfermedades periodontales. Objetivo: Determinar preliminarmente los parámetros de calidad de la jalea de Calendula officinalis L. al 1% para uso estomatológico. Métodos: Se elaboraron 18 formulaciones utilizando como agente gelificante carboximetilcelulosa (CMC) e hidroxipropilmetilcelulosa (HPMC), empleando el método de incorporación. A las mismas se le determinaron los parámetros de calidad y se seleccionaron las cuatro con mejores parámetros tecnológicos para evaluar el grado de aceptación sensorial por parte de un comité de expertos. Resultados: Las formulaciones con HPMC fueron las que presentaron mejores características organolépticas y pH aceptable para su aplicación sobre la mucosa bucal; así como un área de extensibilidad óptimo, lo que permitió que fueran seleccionadas para realizar el análisis sensorial. Conclusión: Se establecieron preliminarmente los parámetros de calidad de la jalea Calendula officinalis L. al 1% siendo seleccionada la formulación codificada como HPMC 6 por presentar olor característico al extracto blando, color ámbar tenue, homogéneo y con brillo, sabor agradable, no presentar grumos ni arenosidad, área de extensibilidad de 66.96±0.91cm2, pH de 4.9 y mayor aceptabilidad sensorial.

Abstract Nowadays, the experiments related to High Energy Physics and others fields demand the use of detectors with greater radiation resistance, and the novel material GaAs:Cr has demonstrated excellent radiation hardness compared with other semiconductors. On the basis of evidence obtained in the JINR experiment with the use of 22 MeV electrons beam generated by the LINAC-800 accelerator, an analysis of electron radiation effects on GaAs:Cr and Si detectors is presented. The measured I-V characteristics showed a dark current increase with dose, and an asymmetry between the two branches of behaviors for all detectors. Analyzing the MIP spectra and CCE dose dependence measurements a deterioration process of detectors collection capacity with dose increase was found, although behaviors are somewhat different according to the detector type. The detailed explanation of these effects from the microscopic point of view appears in the text, and are generally linked to the generation of atomic displacement, vacancies and other radiation defects, modifying the energy levels structure of the target material. These changes affect the lifetime and concentration of the charge carriers, and other characteristics of the target material.

Resumen Actualmente, los experimentos relacionados con la física de altas energías y otros campos, demandan el uso de detectores con mayor resistencia a las radiaciones y el novedoso material GaAs:Cr ha demostrado poseer una excelente fortaleza comparado con otros semiconductores. En base a las evidencias obtenidas en el experimento del IUIN con el uso de un haz de electrones de 22 MeV generado por el acelerador LINAC-800, se presenta un análisis de los efectos de la radiación en detectores de Si y GaAs:Cr. Las características I-V medidas mostraron un incremento de la corriente de fuga con la dosis y una asimetría entre las dos ramas de estos comportamientos para todos los detectores. Analizando las mediciones de los espectros MIP y la dependencia de la CCE con la dosis, fue encontrado un proceso de deterioro de la capacidad de detección de los detectores con el aumento de la dosis, sin embargo, los comportamientos son diferentes de acuerdo al tipo de detector. La explicación detallada de estos efectos desde el punto de vista microscópico aparece en el texto, los cuales están relacionados generalmente con la generación de desplazamientos atómicos, vacancias y otros defectos producto de la radiación, modificando la estructura de los niveles energéticos en el material sensor. Estos cambios afectan el tiempo de vida y la concentración de los portadores de carga, así como otras características del material.

Abstract: BACKGROUND: Cancer is one of the first causes of both mortality and morbidity in the world. Thyroid cancer is the most common endocrine neoplasm. Although most TC patients have a good prognosis, 10 to 15% present recurrent disease and up to 5% show distant metastases. Brain metastases are unusual and are associated with a worse prognosis. OBJECTIVE: To describe the demographic and radiological characteristics, as well as clinical prognosis of patients with thyroid cancer who required neurological consultation. MATERIAL AND METHOD: A prospective observational study in which patients with thyroid cancer who required neurological consultation, attended in a tertiary referral cancer center, was done from January 2010 to January 2016. Serum levels of thyroglobulin, TSH and anti-thyroglobulin antibodies were studied, as suggested previously. RESULTS: We followed around 400 patients with TC and we found seven patients with brain metastases by thyroid cancer and compared them with records found in literature. Male gender, older age and high levels of thyroglobulin were associated with higher incidence of distant metastases of thyroid cancer. CONCLUSIONS: Brain metastases of thyroid cancer are little frequent complications with adverse prognosis. Thyroglobulin is a very useful tumoral marker for the following of patients with thyroid cancer, because it is high in patients with systemic activity and very high in patients with brain metastases.

Resumen: ANTECEDENTES: el cáncer es una de las primeras causas de morbilidad y mortalidad en el mundo; la neoplasia endocrinológica más frecuente es el cáncer de tiroides. A pesar que la mayoría de los pacientes con cáncer de tiroides tienen buen pronóstico, 10 a 15% de los pacientes muestra recurrencia de la enfermedad e incluso 5% padece metástasis a distancia. Las metástasis cerebrales del cáncer de tiroides son raras y habitualmente conllevan mal pronóstico. OBJETIVO: describir las características demográficas y radiológicas, así como el pronóstico clínico de pacientes con cáncer de tiroides que requirieron consulta neurológica. MATERIAL Y MÉTODO: estudio prospectivo observacional en el que se incluyeron pacientes atendidos en un centro de referencia de tercer nivel con cáncer de tiroides que requirieron consulta neurológica entre enero de 2010 y enero de 2016. Se estudiaron las concentraciones séricas de tiroglobulina, TSH y anticuerpos anti-tiroglobulina, como se ha sugerido previamente. RESULTADOS: encontramos siete pacientes con metástasis cerebrales por cáncer de tiroides y las comparamos con registros encontrados en la bibliografía. El género masculino, la edad avanzada y las concentraciones elevadas de tiroglobulina se asociaron con mayor frecuencia de metástasis a distancia de cáncer de tiroides. CONCLUSIONES: las metástasis cerebrales de cáncer de tiroides son complicaciones poco frecuentes con pronóstico adverso. La tiroglobulina es un marcador tumoral muy útil para el seguimiento de pacientes con cáncer de tiroides ya que está elevada en pacientes con actividad sistémica y muy elevada en sujetos con metástasis cerebrales.

Resumo O objetivo do presente estudo foi analisar a regeneração muscular após criolesão no músculo tibial anterior de ratos jovens desnutridos e recuperados. Foram utilizados 40 ratos da linhagem Wistar, divididos em 2 grupos: ratos nutridos receberam dieta normoproteica (14% de caseína) por 90 dias; e ratos desnutridos e recuperado submetidos a duas fases nutricionais pós-desmame, correspondendo a 45 dias de desnutrição com dieta hipoproteica (6% caseína), seguida por 45 dias de dieta normoproteica (14% caseína). Ao completar a fase de recuperação, todos os animais foram submetidos à criolesão no músculo tibial anterior direito e a eutanasia ocorreu 7, 14 e 21 dias após a lesão. A quantidade de tecido conjuntivo e a área de inflamação 14 dias pós-lesão foi maior no grupo desnutrido, recuperado e lesado (MRI – malnourished, recovered and injured group) (p < 0,05). A área de secção transversa (AST) das fibras regeneradas do grupo MRI foi menor (p < 0,05). O conteúdo das proteínas MyoD e Miogenina foi maior no grupo nutridos e lesados. A citocina TGF-β1 não apresentou diferença entre os grupos. O protocolo proposto foi eficaz para demonstrar alterações no processo de regeneração do músculo tibial anterior de ratos jovens, atrasando o reparo muscular mesmo após a recuperação nutricional.

Abstract The aim of this study was to analyze muscle regeneration after cryoinjury in the tibialis anterior muscle of young rats that were malnourished and then recovered. Forty Wistar rats were divided into a nourished group that received a normal protein diet (14% casein) for 90 days and a malnourished and recovered rats group (MR) that was submitted to 45 days of malnutrition with a hypoproteic diet (6% casein) followed by 45 days of a normal protein diet (14% casein). After the recovery period, all of the animals underwent cryoinjury in the right tibialis anterior muscle and euthanasia after 7, 14 and 21 days. The amount of connective tissue and the inflammation area was higher in the malnutrition recovered injury MR group (MRI) at 14 days post-injury (p < 0.05). Additionally, the cross-sectional area (CSA) of the regenerated fibers was decreased in the MRI (p < 0.05). The MyoD and myogenin protein levels were higher in the nourished injury group. Similar levels of TGF-β1 were found between groups. The proposed malnutrition protocol was effective in showing delayed changes in the regeneration process of the tibialis anterior muscle of young rats. Furthermore, we observed a delay in muscle repair even after nutritional recovery.

Resumo A tuberculose bovina (BTB) continua sendo um importante problema econômico na América Latina, com potenciais consequências zoonóticas. Tradicionalmente, a luta contra a tuberculose bovina tem sido iniciada pela execução de testes de diagnóstico de rotina para a certificação de propriedades livres da doença. O diagnóstico de BTB pode ser feito através de métodos diretos e indiretos, nos quais podemos citar os métodos clínicos, post mortem, histopatológicos, imunológicos, bacteriológicos e moleculares. A renovação do interesse científico em tuberculose nos últimos anos tem levado à necessidade de desenvolver e melhorar os métodos de diagnóstico, prevenção, controle e erradicação da BTB. O objetivo deste artigo é analisar e discutir sobre os diferentes métodos de diagnóstico de BTB.

Abstract Bovine tuberculosis (BTB) remains an important economic and zoonotic problem in Latin America. Traditionally, the fight against BTB is initiated by the implementation of routine diagnostic tests for certification of free properties. The diagnosis of BTB can be made by direct and indirect methods, in which we can mention clinical, post mortem, histopathological, immunological, bacteriological and molecular methods. The renewal of scientific interest in tuberculosis in recent year has led to develop and improve methods of diagnosis, prevention, control and eradication of BTB. The aim of this review is to present and discuss different diagnosis methods of BTB.

Resumen Tubérculos del género Dioscorea comercializados con fines medicinales, fueron recolectados con el propósito de lograr su establecimiento a condiciones in vitro. Previamente se lograron identificar taxonómicamente las especies y por medio de análisis fitoquímicos demostrar su potencial farmacéutico. El material recolectado fue identificado como Dioscorea coriacea, D. lehmannii, D. meridensis, D. polygonoides y una especie comestible D. trífida. Tubérculos recolectados de centros de acopio y traídos de campo fueron lavados, desinfectados, asperjados con Ácido Giberélico (AG3) y sembrados en sustrato BM-2®, en invernadero a 18°C día y 10°C noche. Los tubérculos completos o por secciones fueron almacenados en bolsas herméticas a temperatura ambiente. Posteriormente se desinfectó material vegetal de las especies D. coriacea, D. lehmannii, D. meridensis y D polygonoides, seleccionando explantes de brotes sanos (D. coriacea / laboratorio) para su establecimiento. Se evaluaron tres medios de cultivo para establecimiento, el que presentó los mejores resultados fue Medio Murashige & Skoog (1962) suplementado con BAP 1 mL/L, AG3 1 mL/L y Putrescina 2 mL/L. Para la extracción y análisis de metabolitos secundarios se utilizaron tubérculos de D. coriacea, D. lehmannii y D. polygonoides, empleando como solvente de extracción metanol. Se encontró mayor concentración de extracto vegetal en D. coriacea (54%), y mediante cromatografía en capa delgada (CCD), se confirmó la presencia de saponinas, que resultó mayor en comparación con D. polygonoides especie reconocida por su alto contenido de saponinas. Estos resultados permitirán realizar análisis más avanzados de los compuestos presentes y plantear su propagación masiva en condiciones in vitro.

Abstract Wild tubers of the genus Dioscorea sold for medicinal use were collected for the purpose of achieving its establishment under in vitro conditions. First we taxonomically identified the species and through phytochemical analysis demonstrated pharmaceutical potential. The material collected was identified as Dioscorea coriacea, D. lehmannii, D. meridensis, D. polygonoides and the edible species D. trifida. Tubers collected from wholesale distributors and from the field were washed, disinfected, sprayed with Gibberellic Acid (GA3) and planted in substrate BM-2®, in a greenhouse at 18 ° C during the day and 10 ° C overnight. Whole tubers or sections thereof were stored in sealed bags at room temperature. Subsequently plant material of the species D. coriacea, D. lehmannii, D. meridensis and D. polygonoides was disinfected and healthy buds (D. coriacea / laboratory) were selected for in vitro establishment. Three different culture media were evaluated for establishment; that which presented the best results was the Murashige & Skoog (1962) medium, supplemented with BAP 1 mL / L, GA3 1 mL / L and Putrescin 2 mL / L. For the collection and analysis of secondary metabolites, tubers of D. coriacea, D. lehmannii and D. polygonoides were used, using methanol as the extraction solvent. The highest concentration of plant extract, 54%, was found in D. coriacea, a higher value than that of D. polygonoides, which had been reported previously; the presence of saponins was confirmed by thin layer chromatography (TLC). These results will enable more advanced analysis of the present compounds and enhance their mass propagation under in vitro conditions.