Ampliando conhecimentos sobre a prática das Intervenções Assistidas por Animais a partir de oficinas interativas / Expanding knowlwdge about the practice of animal-assisted interventions from interactive workshops

Objetivo: O presente artigo tem como propósito relatar a experiência vivenciada por integrantes da equipe do Projeto Pet Terapia da Universidade Federal de Pelotas no planejamento e desenvolvimento de oficinas interativas sobre a temática das Intervenções Assistidas por Animais. Metodologia: As oficinas ocorreram durante os encontros promovidos pela Universidade Federal de Pelotas, respectivamente nos anos de 2017, 2018 e 2019. Participaram discentes da graduação, pós-graduandos, docentes e comunidade universitária em geral. Ministradas de forma expositiva e interativa, com apresentações de tópicos e imagens de vivências do Pet Terapia, além da interação dos participantes com cães coterapeutas do projeto. Resultados: a ampliação do entendimento com relação às Intervenções Assistidas por Animais em que se utilizou a metodologia de oficina interativa, apontaram que os participantes compreenderam essa abordagem terapêutica como estratégia passível de ser incorporada aos cuidados de saúde por equipe multidisciplinar. Conclusão: conclui-se que, a realização de oficinas interativas contribui para facilitar a ampliação do conhecimento da comunidade acadêmica e profissionais de saúde sobre as Intervenções Assistidas por Animias como prática complementar de cuidado em saúde. (AU)

Objective: The purpose of this article is to report the experience lived by the team that is part of the Pet Terapia project at the Federal University of Pelotas in the planning and development of interactive workshops on the theme of Animal-Assisted Interventions. Methods: The workshops took place during the meetings promoted by the Federal University of Pelotas, respectively in the years 2017, 2018 and 2019. Undergraduate students, graduate students, teachers and the university community in general participated. Taught in an expository and interactive way, with presentations of topics and images of Pet Terapia experiences, in addition to the interaction of participants with dogs co-therapists of the project. Results: The broadening of the understanding in relation to the Animal-assisted interventions in which the interactive, workshop methodology was used pointed out that the participants understood this therapeutic approach as a strategy capable of being incorporated into health care by a multidisciplinar team. Conclusion: It is concluded that, the realization of interactive workshops contribute to facilitate the expansion of the knowledge of the academic community and health professionals about Animal-assisted interventions as a complementary health care practice. (AU)

Objetivo: El propósito de este artículo es informar la experiencia vivida por el equipo que forma parte del proyecto Pet Terapia en la Universidad Federal de Pelotas en la planificación y desarrollo de talleres interactivos sobre el tema de las Intervenciones Asistidas por Animales. Metodos: Los talleres tuvieron lugar durante las reuniones promovidas por la Universidad Federal de Pelotas, respectivamente, en los años 2017, 2018 y 2019. Participaron estudiantes de pregrado, estudiantes de posgrado, docentes y la comunidad universitaria en general. Impartido de forma expositiva e interactiva, con presentaciones de temas e imágenes de las experiencias de Pet Terapia, además de la interacción de los participantes con los perros co-terapeutas del proyecto. Resultados: La expansión de la comprensión com respecto al intervenciones asistidas por animales em el que se utilizo la metodologia del taller interactivo, señaló que los participantes entendieron este enfoque terapéutico como una estratégia que podría ser incorporada a la atención médica por um equipo multidisciplinario. Conclusión: Se concluye que la realización de talleres interactivos contribuye a facilitar la expansión del conocimiento de la comunidad académica y los profesionales de la salud acerca de las Intervenciones Asistidas por Animales como práctica complementaria de cuidado de la salud. (AU)

Aqueous wheat extract (Triticuma estivum) prevents carboplatin-induced myelosuppression and oxidative stress in Wistar rats / Extrato aquoso de trigo (Triticum aestivum) na prevenção da mielossupressão e estresse oxidativo induzidos pela carboplatina em ratos Wistar

ABSTRACT: The present study aimed to evaluate the use of aqueous wheat extracts as an adjunct to antineoplastic therapy with carboplatin. In this study, 32 rats were used which were randomly distributed into 4 groups: G1 - negative control; G2 - control treated with physiological solution; G3 - animals treated with aqueous extract of wheat in the concentration of 100mg/kg; G4 - animals treated with aqueous wheat extract at the concentration of 400mg/kg; 300mg/m² of carboplatin was administered intraperitoneally at day 0 in animals from groups G2, G3, and G4, whereas 1ml of physiological solution was administered by the same route in animals from group G1. Animals were treated daily for 21 days by orogastric gavage according to their respective experimental group. Blood was collected from animals on days 3, 7 and 21 for complete blood count (CBC), biochemistry, and measurement of paraoxonase 1 (PON1) activity. On day 21, animals were euthanized and necropsied. Promising results were obtained regarding oxidative balance in groups G3 and G4. Both presented better PON1 activity in comparison with group G2 (P<0.05). Total leukocyte count of group G4 differed significantly from group G2 (P<0.05) on day 21. Myelogram values of animals from groups G3 and G4 were ​​similar to those from G1; animals from G3 had lower numbers of promyelocytes and increased numbers of erythrocytes and rubriblasts than animals from G2 (P<0.05). In the present experimental study, aqueous wheat extract was safe at the doses used in the animals, and was an effective treatment for myelosuppression and for the prevention of an excessive release of free radicals induced by carboplatin.

RESUMO: O presente estudo avaliou a utilização dos extratos aquosos de trigo como adjuvante a terapia antineoplásica com carboplatina. No estudo foram utilizadas 32 ratas, as quais foram aleatoriamente distribuídas em quatro grupos: G1 - controle negativo; G2 - controle tratado com solução fisiológica; G3 - tratado com extrato aquoso de trigo na concentração de 100mg/kg; G4 - tratado com extrato aquoso de trigo na concentração de 400mg/kg. Administrou-se 300mg/m² de carboplatina por via intraperitoneal no dia 0 nos grupos G2, G3, e G4, enquanto no G1 foi administrado 1mL de solução fisiológica pela mesma via. Os animais foram tratados diariamente durante 21 dias por gavagem orogástrica de acordo com seu respectivo grupo experimental. Foi coletado sangue dos animais nos dias três, sete e 21, para realização de hemograma, testes bioquímicos e mensuração da atividade da paraoxanase 1 (PON1). No dia 21 os animais foram eutanasiados e realizada coleta de medula óssea, rim e fígado. Foram observados resultados promissores com relação ao balanço oxidativo no G3 e G4, pois ambos apresentaram melhor atividade da PON1 em relação ao G2 (P<0,05). Além disso, foi constatado que os mesmos grupos apresentaram contagem de leucócitos totais superiores ao G2 durante todo o período experimental, com G4 diferindo significativamente do G2 (P<0,05) no dia 21. Os mielogramas dos animais do G3 e G4 apresentaram valores análogos ao G1, sendo que o G3 apresentou menor contagem de promielócitos e maior de células eritroides e rubroblastos que o G2 (P<0,05). Nas condições experimentais deste estudo os extratos aquosos de trigo mostraram-se seguros nas doses utilizadas e úteis no tratamento da mielossupressão e liberação excessiva de radicais livres induzidas pelo fármaco carboplatina.

Participatory methodologies in research with children: creative and innovative approaches. / Metodologias participativas em pesquisa com crianças: abordagens criativas e inovadoras.

OBJECTIVE: To describe the use of participatory methodologies in research with children. METHODS: Experience report with a qualitative approach, conducted with children between six and eleven years of age, from a municipal school in Pelotas and in the Psychosocial Children and Youth Care Center, in São Lourenço do Sul, both municipalities of the Rio Grande do Sul State. Data collection was based on records made in field and observation diaries, held from April to July 2016. RESULTS: The report pointed out that the Photovoice promoted motivation in the group, in addition to increasing the self-esteem and self-confidence of children. The Five Field Map made it possible to help children express feelings through the game. CONCLUSION: Photovoice and the Five Field Map are seen as tools that enable new methodological approaches in research with children, facilitating the construction of the proposed activities aimed at innovative and creative research processes in health/nursing.

Interação lúdica na atividade assistida por cães em pediatria / Recreational interaction in canine-assisted activities in pediatrics

Objetivo: verificar a interação lúdica entre crianças e cães na Atividade Assistida por Animais. Metodologia: estudo descritivo, exploratório e de caráter transversal. Participaram 14 crianças internadas na pediatria de um hospital universitário e cães do Projeto Pet Terapia - Faculdade de Veterinária UFPel. Utilizou-se vídeo-gravação, fotos e questionário aplicado aos pais. Resultados: observou-se a interação entre crianças e cães, com foco na aproximação, brincadeiras, promoção do bem-estar, redução da tensão e incremento no humor. Conclusões: Atividade Assistida por Animais mostrou-se como estratégia inovadora de cuidado para enfermagem pediátrica, proporcionou atividades de lazer, relaxamento, diversão, interação lúdica e promoveu atmosfera acolhedora no referido contexto.

Objetivo: Verificar la interacción lúdica entre los niños y perros en Actividad Asistida por Animais. Metodología: estudio exploratorio descriptivo de transversal. Participaro 14 niños hospitalizados en la pediatría de un hospital universitario y perros - CollegePet Project Terapia UFPel Veterinaria. Se utilizó la grabación de vídeo, fotos y cuestionario a los padres. Resultados:Fue observada lainteracción entre losniños y los perros, centrada em laaproximación, chistes, promoción del bienestar entre niños, reducción de la tensión e incremento del humor.Conclusiones: Actividad Asistida por Animales se presentaron como una estrategia innovadora de la atención de enfermería pediátrica, proporcionando actividades de ocio, relajación, diversión e interacción lúdicay promovidos ambiente agradable en ese contexto.

Objective: to verify the playful interaction between children and dogs in a Animal Assisted Activity. Methodology: Descriptive exploratory cross - sectional study. Participants were 14 children admitted to the pediatrics of a University Hospital and dogs from the Pet Therapy Project - UFPel Veterinary School. The use of Video-recording, photos and questionnaire were applied to parents. Results: The interaction between children and dogs were observed, focusing on the approach, games, promotion of welfare, reduction of tension and increase in their mood. Conclusions: Animal-Assisted Activity proved to be an innovative strategy for pediatric nursing care, provided leisure activities, relaxation, fun, playful interaction and promoted a welcoming atmosphere in the context.

Toxicidade dos fitoterápicos de interesse do SUS: uma revisão / Toxicity of herbal medicines with interest to SUS: a review

No Brasil, desde sua colonização até os dias atuais são utilizados produtos de origem natural e a Agência nacional de Vigilância Epidemiológica vem instituindo regras para a regulamentação dos medicamentos fitoterápicos, sendo que foram escolhidas 71 plantas utilizadas empiricamente no país para pesquisa e comprovação de suas propriedades medicinais. Atualmente, 12 dessas 71 plantas foram liberadas para uso no Sistema Único de Saúde, sendo que as outras 59 plantas ainda necessitam de mais pesquisas para liberação do seu uso. Neste contexto, observou-se a necessidade de uma revisão dos testes toxicológicos das plantas que ainda não foram liberadas, na tentativa de impulsar e estimular novas pesquisas nesse campo. Para escolha das plantas foram utilizadas as palavras-chave: nome da planta + toxicidade/estudos toxicológicos nas línguas português e inglês nos principais bancos de dados. As 10 plantas que apresentaram maior quantidade de estudos toxicológicos foram utilizadas para a pesquisa. Para as dez plantas avaliadas, três apresentam dados completos referentes aos estudos toxicológicos exigidos pela agência nacional de Vigilância Epidemiológica. Destas, sugere-se que duas (Curcuma longa e Zingiberofficinale) sejam adotadas pelo Sistema Único de Saúde. De maneira geral, três plantas já apresentam o valor determinado para DL50, nove plantas apresentam resultados para a toxicidade reprodutiva e cinco plantas, até o presente momento, não apresentam sinais de toxicidade nos testes aplicados.

In Brazil, ever since colonization plants have been used as natural products; thus, the National Health Surveillance Agency has been establishing rules for herbal medicine regulation; in this light, 71 plant species were chosen and empirically used in the country to investigate their medicinal properties. Currently, 12 of these 71 plants have been approved to be used in SUS (Public Health System), there maining species still need further research. Thusly, this review aimed to seek information from toxicological studies on the plants that have not yet been officially approved, to stimulate new researchin the field, promoting an economical and functional impact. In order to obtain the information, the keywords plant name + toxicity and/or toxicological studies were searched in the most prominent databases, both in English and in Portuguese. The ten plants with the most references were included in this review. Among the ten plants assessed, three have all the required studies required by the National Health Surveillance Agency, two of which we recommend the immediate adoption by SUS. In general, three plants have a determined LD50, nine have reproductive toxicity data, and five have not yet shownany sign of toxicity.

Repellent Action of Carapa guianensis and Caesalpinia ferrea for flies species of Calliphoridae family / Ação repelente de Carapa guianensis e Caesalpinia férrea paraespécies de mosacas da família Callip horidae

ABSTRACT: Myiases occur by the infestation of fly larvae in tissues of live vertebrate animals, resulting in economic loss. Phytotherapy is considered an important alternative in the control of insects, which may reduce the economic impacts. Carapa guianensis is a plant that has been studied as a repellent against mosquitoes and Caesalpinia ferrea is reported in tropical climates, and there are few studies about its repellent action. The present study was designed to evaluate the repellent action of s C. guianensis and C. ferrea plants on flies species of the Calliphoridae family. W.O.T. traps containing deteriorated bovine liver and herbs cream of at concentrations of 20 and 50% were used to catch the flies. It was reported that the creams containing C. ferrea at concentrations of 20 and 50% and C. guianensis at the concentration of 50% have repellent effect against species of Calliphoridae family.

RESUMO: Miíases ocorrem pela infestação de larvas de moscas em tecidos de animais vertebrados vivos, resultando em perdas econômicas. Fitoterapia é considerada uma alternativa importante no controle de insetos, o que pode reduzir os impactos econômicos. Carapa guianensis é uma planta que tem sido estudada como um repelente contra mosquitos e Caesalpinia ferrea Mart. é encontrada em climas tropicais, e há poucos estudos sobre sua ação repelente. O presente estudo foi desenhado para avaliar a ação repelente das plantas C. guianensis e C. ferrea Mart. em espécies de moscas da família Calliphoridae. Armadilhas WOT contendo fígado bovino deteriorado e creme de ervas em concentrações de 20 e 50% foram usadas para capturar as moscas. Verificou-se que os cremes contendo C. ferrea Mart. em concentrações de 20 e 50%, e C. guianensis, na concentração de 50%, têm efeito repelente contra as espécies da família Calliphoridae.

Metodologias participativas em pesquisa com crianças: abordagens criativas e inovadoras / Metodologías de investigación participativa con niños: enfoques creativos e innovadores / Participatory methodologies in research with children: creative and innovative approaches

RESUMO Objetivo Relatar a experiência da utilização de metodologias participativas em pesquisa com crianças. Métodos Relato de experiência com abordagem qualitativa, realizado com crianças entre seis e onze anos de uma escola municipal, em Pelotas, e do Centro de Atenção Psicossocial Infantojuvenil, em São Lourenço do Sul, ambos municípios do Estado do Rio Grande do Sul. A coleta de dados foi baseada em registros feitos em diários de campo e observação, realizada de abril a julho de 2016. Resultados O relato apontou que o Photovoice promoveu a motivação entre o grupo e elevou a autoestima e a autoconfiança das crianças. O Mapa dos Cinco Campos possibilitou às crianças expressar sentimentos por intermédio do jogo. Conclusão Compreende-se que o Photovoice e o Mapa dos Cinco Campos são instrumentos que viabilizam novas abordagens metodológicas nas pesquisas com crianças, facilitando a construção das propostas de atividades que visam processos inovadores e criativos de pesquisa em saúde/enfermagem.

RESUMEN Objetivo Presentar la experiencia de usar enfoques participativos en la investigación con niños. Métodos Informe de experiencia con un enfoque cualitativo, realizado con niños de entre seis y once años, de una escuela municipal en Pelotas y en el Cuidado de Niños y Jóvenes Centro Psicosocial, en São Lourenço do Sul, ambos municipios de Rio Grande do Sul. La recogida de datos se basa en los registros realizados en diarios de campo y observación, de abril a julio de 2016. Resultados el informe señaló que la Fotovoz promueve la motivación entre el grupo, el aumento de la autoestima, autoconfianza de los niños. El Mapa de cinco campos y ayudan a los niños a expresar sus sentimientos por medio del juego. Conclusión Se entiende que el Fotovoz y mapa de cinco campos son herramientas que permiten los nuevos enfoques metodológicos de la investigación con los niños, lo que facilita la construcción de las actividades propuestas dirigidas a los procesos creativos e innovadores de la investigación en salud/enfermería.

ABSTRACT Objective To describe the use of participatory methodologies in research with children. Methods Experience report with a qualitative approach, conducted with children between six and eleven years of age, from a municipal school in Pelotas and in the Psychosocial Children and Youth Care Center, in São Lourenço do Sul, both municipalities of the Rio Grande do Sul State. Data collection was based on records made in field and observation diaries, held from April to July 2016. Results The report pointed out that the Photovoice promoted motivation in the group, in addition to increasing the self-esteem and self-confidence of children. The Five Field Map made it possible to help children express feelings through the game. Conclusion Photovoice and the Five Field Map are seen as tools that enable new methodological approaches in research with children, facilitating the construction of the proposed activities aimed at innovative and creative research processes in health/nursing.

Comparing open wound measuring methods popularly used in experimental studies / Estudo comparativo de métodos de avaliação de contração de feridas cutâneas abertas

Tissue repair is a response reaction to lesions and aggressions that constitutes a dynamic process to maintain the integrity of the organism. Wound healing experiments have used several approaches in order to assess and compare treatment methods, and these discrepancies hamper comparisons among assays. This study assessed three different methods of wound measurement commonly used in healing assays: clock method, graph paper method, and computer-assisted image analysis. We used 30 Wistar rats, kept in appropriate conditions for animal well-being. After anesthesia, and using an eight-millimeter punch, two lesions were made in the back region of each rat. The wounds were assessed on days four, seven, and 14 after infliction. At four days, all methods generated similar results. By day seven, the clock method had lost precision, likely due to wound shrinkage, and yielded greater means compared to the other two methods. On the last assessment, the computer-assisted method appeared to have more precise results, with the other two generating statistically higher means. Computer-assisted image analysis seems to have maintained wound measuring precision throughout this experiment, even when faced with small lesions. Considering these results, the authors recommend the use of computer-assisted measurements in future experiments.

O reparo tecidual surge em resposta às lesões e constitui-se de um processo dinâmico para manutenção da integridade do organismo. Nos estudos sobre cicatrização de feridas, tem se utilizado várias técnicas buscando-se uma avaliação da eficácia de meios de tratamento local. Sendo assim, o presente trabalho objetivou comparar três métodos de avaliação experimental de áreas de feridas, sendo eles: o método do relógio, papel milimetrado e avaliação computadorizada. Para realização do experimento, foram utilizados 30 ratos Wistar em condições de bem-estar. Após realizada a anestesia, foram confeccionadas duas lesões no dorso de cada animal com punch de 8 mm, sendo as feridas avaliadas após quatro, sete e 14 dias de tratamento. Observou-se que aos quatro dias de tratamento, todos os métodos apresentaram o mesmo desempenho, enquanto aos sete e 14 dias, o método do relógio, apresentou maior média de área, perdendo precisão, e aos 14 dias, a avaliação computadorizada apresentou resultados mais precisos em relação a ambos os outros métodos. Concluiu-se que a avaliação computadorizada através de software de áreas de feridas cutâneas apresenta resultados mais precisos em relação aos métodos do relógio e papel milimetrado, principalmente em lesões menores.

Clinical and mycological analysis of dog's oral cavity

The oral microbiota of humans and animals is made up of a wide variety of yeasts and bacteria, but microbiota of dogs is not totally described. Although such identification is an important step to establish the etiopathogenesis and adequate therapy for the periodontal disease The aim of this study was to evaluate and correlate oral alterations with the presence of yeasts in oral cavity of female dogs. After clinical evaluation samples from healthy and from dogs with oral diseases were obtained from three different oral sites by swabs, curettes, millimeter periodontal probes and HA membrane tip in cellulose ester. Yeast identification was performed through macroscopic and microscopic colony features and biochemical tests. Dental calculus was the most prevalent occurrence in the oral cavity of 59 females. However, the isolation of yeasts was significantly higher (p < 0.05) in animals suffering from halitosis. Eleven yeast species were identified, namely: Malassezia pachydermatis, Rhodotorula spp., Candida albicans, C. catenulata, C. famata, C. guilliermondii, C. parapsilosis, C. intermedia, Trichosporon asahii, T. mucoides and Cryptococcus albidus. It could be concluded that the yeasts are part of the microbiota from the different sites of the oral cavity of the female canines studied without causing any significant alterations except halitosis.

Epidemiological findings and laboratory evaluation of sporotrichosis: a description of 103 cases in cats and dogs in southern Brazil.

Sporotrichosis is a subcutaneous mycosis, which affects mainly small animals, and is considered an important public health disease. This paper describes the epidemiological and laboratory characteristics of 103 clinical cases of sporotrichosis diagnosed over a 10-year period in southern Brazil. The 92 cats and 11 dogs from eight municipalities in Rio Grande do Sul State developed especially the disseminated cutaneous and fixed cutaneous forms of the disease. Respiratory signs such as sneezing, serous nasal discharge and dyspnea were found in about 57% of the animals. The detection of Sporothrix schenckii in different clinical samples showed highest isolation in testicles (46.6%), oral cavity (45.2%) and conjunctival mucosa (38.1%). A differentiated histological pattern was found between the fixed cutaneous and disseminated cutaneous (DC) manifestations of the disease; well-organized granulomas of nodular distribution and various fungal structures prevailed in the DC form in cats. Melanin detection in S. schenckii cells by the Fontana-Masson technique was positive in 45.4% of the samples. The study revealed that the State of Rio Grande do Sul is an endemic sporotrichosis area and demonstrated the possibility of involvement of other pathways in the infection and spread of the disease. In addition, it emphasized the importance of laboratory tests for mycosis confirmation, especially in dogs that develop clinical manifestations without the presence of cutaneous lesions.

Ultrastructural study of the mycelial phase of clinical isolates of Sporothrix schenckii obtained from feline, canine and human cases of sporotrichosis

Using transmission electron microscopy, we studied the presence of melanin and cell wall thickness of clinical isolates of Sporothrix schenckii obtained from cats, dogs and humans as compared to reference strains. We detected differences regarding presence of the melanin among the clinical isolates of S. schenckii and a correlation between presence of melanin and cell wall thickness.

Presence of Toxocara canis eggs on the hair of dogs: a risk factor for Visceral Larva Migrans.

The close contact between dogs and humans poses a high risk of exposure to Toxocara canis eggs, which can lead to Visceral Larva Migrans (VLM) syndrome. The objective of this study was to investigate the existence of these nematode eggs on the hair of the perianal region in stray and owned dogs. Samples of hair from 104 dogs of different ages were collected: 25 (24%) were positive for T. canis eggs, with mean of 614.8 eggs per gram of hair. Puppies were responsible for 99% of the total number of eggs. The ages of the animal and hair length were factors that influenced the intensity of the observed eggs. This study showed that dog hair contaminated by T. canis eggs in different developmental stages represents a potential source of VLM infection for humans.

[Occurrence of Cryptococcus neoformans in pigeon excrement in the city of Pelotas, State of Rio Grande do Sul]. / Ocorrência de Cryptococcus neoformans em excretas de pombos na cidade de Pelotas, Estado do Rio Grande do Sul.

INTRODUCTION: Cryptococcus neoformans is an encapsulated yeast and is the etiological agent for human and animal cryptococcosis. It is found in sources within the environment, including pigeon excrement, and is an important cause of mortality among immunocompromised individuals worldwide. METHODS: Seventy different environments in the city of Pelotas, Rio Grande do Sul, were surveyed for the purpose of investigating Cryptococcus neoformans occurrences in pigeon excreta. The environments included buildings, public squares and outdoor locations in the city. After collection, chloramphenicol saline solution was added to the excreta, which were then homogenized and seeded onto Sabouraud agar with chloramphenicol and onto Niger agar, and incubated at 32 degrees C. Identification was performed by direct examination and by means of the phenoloxidase and urease tests, carbohydrate assimilation and culturing in CGB medium. RESULTS: Out of the sites investigated (n = 70), 26 (37.1%) of them contained pigeon excreta. These included historical buildings (n = 8), a church tower (n = 1), rice mills and warehouses (n = 7), a public square (n = 1) and outdoor locations (n = 9). Cryptococcus neoformans was isolated from 26.9% (n = 7/26) of these locations. CONCLUSIONS: This study draws attention to isolation of this fungus in urban areas that present large accumulations of pigeon excrement. This represents a risk to public health, especially for immunocompromised individuals.

Ocorrência de Cryptococcus neoformans em excretas de pombos na cidade de Pelotas, Estado do Rio Grande do Sul / Occurrence of Cryptococcus neoformans in pigeon excrement in the city of Pelotas, State of Rio Grande do Sul

INTRODUÇÃO: O Cryptococcus neoformans é uma levedura capsulada, agente etiológico da criptococose em humanos e animais, encontrado em fontes ambientais, incluindo excretas de pombos, é uma importante causa de mortalidade em indivíduos imunodeprimidos em todo o mundo. MÉTODOS: Com o objetivo de verificar a ocorrência do Cryptococcus neoformans, em excretas de pombos, na Cidade de Pelotas, pesquisou-se 70 ambientes, incluindo prédios, praças e locais ao ar livre, da Cidade de Pelotas, RS. Após a coleta, os excrementos foram adicionados de salina com cloranfenicol, homogeneizados, semeados em ágar Sabouraud com cloranfenicol e ágar Níger e incubados a 32ºC. Para identificação, realizou-se exame direto, prova da fenoloxidase, urease, assimilação de carboidratos e cultura em meio CGB. RESULTADOS: Dos locais estudados (nº =70), em 26 (37,1 por cento) havia excretas de pombos. Estes lugares foram representados por prédios históricos (nº =8), torre de igreja (nº =1), engenhos e armazéns de arroz (nº =7), praça (nº =1) e locais ao ar livre (nº =9), o isolamento de Cryptococcus neoformans ocorreu em 26,9 por cento (nº =7/26), destes locais. CONCLUSÕES: O estudo chama a atenção, para o isolamento do fungo em áreas urbanas, que apresentavam grande acúmulo de excretas, indicando um risco para a saúde pública, especialmente para indivíduos imunocomprometidos.

INTRODUCTION: Cryptococcus neoformans is an encapsulated yeast and is the etiological agent for human and animal cryptococcosis. It is found in sources within the environment, including pigeon excrement, and is an important cause of mortality among immunocompromised individuals worldwide. METHODS: Seventy different environments in the city of Pelotas, Rio Grande do Sul, were surveyed for the purpose of investigating Cryptococcus neoformans occurrences in pigeon excreta. The environments included buildings, public squares and outdoor locations in the city. After collection, chloramphenicol saline solution was added to the excreta, which were then homogenized and seeded onto Sabouraud agar with chloramphenicol and onto Niger agar, and incubated at 32°C. Identification was performed by direct examination and by means of the phenoloxidase and urease tests, carbohydrate assimilation and culturing in CGB medium. RESULTS: Out of the sites investigated (n = 70), 26 (37.1 percent) of them contained pigeon excreta. These included historical buildings (n = 8), a church tower (n = 1), rice mills and warehouses (n = 7), a public square (n = 1) and outdoor locations (n = 9). Cryptococcus neoformans was isolated from 26.9 percent (n = 7/26) of these locations. CONCLUSIONS: This study draws attention to isolation of this fungus in urban areas that present large accumulations of pigeon excrement. This represents a risk to public health, especially for immunocompromised individuals.

Disease progression of dermatophytic pseudomycetoma in a Persian cat.

BACKGROUND: Dermatophytic pseudomycetoma is a subcutaneous fungal infection by Microsporum canis. AIMS: This work describes a case of dermatophytic pseudomycetoma in a Persian cat. PATIENT AND METHODS: A 3-year old female Persian cat showing alopecia, scaling and ulcerated nodules throughout the body, with presence of ulcerated nodules with yellow granular discharges on the dorsum, close to the tail. Mycological and histopathological examinations were realized. RESULTS: Diagnosis of dermatophytic pseudomycetoma was established. The cat was treated with griseofulvin, and surgical excision was carried out. Response to therapy was effective during the first months, during which a reduction in nodule frequency was observed. However, despite maintaining the therapy levels, the lesions relapsed and progressed to the point of causing the animal's death. CONCLUSION: The clinic evolution showed the progressive and recurrent character of dermatophytic pseudomycetoma.

Role of melanin in the pathogenesis of cutaneous sporotrichosis.

In this study, we evaluate the clinical, histopathological and ultra structural aspects of the infection by field strain (MEL(+)) and mutated strain (MEL(-)) of Sporothrix schenckii. The development of sporotrichosis at the inoculation sites was similar for both groups of animals after the second week of the experimental period. Statistical differences appeared only at weeks 3 and 5. The pigmented isolate had greater tissue invasive capacity, promoting the formation of multifocal granulomas, whereas the albino isolate induced an enhanced inflammatory response, restraining the agent to the core of the granulomas.

Esporotricose cutânea experimental: Avaliação in vivo do itraconazol e terbinafina / Experimental cutaneous sporotrichosis: in vivo evaluation of itraconazole and terbinafine

O estudo objetivou avaliar a atividade in vivo do itraconazol e terbinafina no tratamento da esporotricose cutânea experimental. Foram utilizados 80 ratos Wistar divididos em quatro grupos (TERB20, TERB30, ITRA e CONT) inoculados no coxim plantar esquerdo com 0,2ml de solução contendo 2x103 células de Sporothrix schenckii/ml e tratados com terbinafina (20 e 30mg/kg), itraconazol (10mg/kg) e placebo durante 13 semanas. As lesões do sítio de inoculação foram avaliadas e mensuradas semanalmente, assim como a disseminação das mesmas. Após foi realizada análise micológica e histopatológica. Os resultados demonstraram que os animais do grupo ITRA diferiram estatisticamente em todos os parâmetros avaliados em relação ao CONT. Em relação à terbinafina, não houve diferenças estatísticas entre os grupos tratados e controle. Pode-se confirmar a boa atividade do itraconazol no tratamento da esporotricose e a pouca eficácia da terbinafina nas doses utilizadas, sendo necessários mais estudos com este antifúngico.

The aim of this study was to evaluate the in vivo activity of itraconazole and terbinafine for treating experimental cutaneous sporotrichosis. Eighty Wistar rats were used, divided into four groups (TERB20, TERB30, ITRA and CONT). They were inoculated in the left plantar pad with 0.2 ml of solution containing 2x10³ cell/ml of Sporothrix schenckii and treated with terbinafine (20 and 30 mg/kg), itraconazole (10 mg/kg) or placebo for 13 weeks. The lesions at the inoculation site were evaluated and measured weekly, along with their dissemination. Mycological and histopathological analyses were performed subsequently. The results showed that the animals in the ITRA group differed statistically in all parameters evaluated, in relation to CONT. For terbinafine, there were no statistical differences between the treated and control groups. It could be confirmed that itraconazole presented good activity for treating sporotrichosis, while terbinafine was ineffective for this disease at the doses used. However, more studies on the latter antifungal agent are needed.

[Experimental cutaneous sporotrichosis: in vivo evaluation of itraconazole and terbinafine]. / Esporotricose cutânea experimental: Avaliação in vivo do itraconazol e terbinafina.

The aim of this study was to evaluate the in vivo activity of itraconazole and terbinafine for treating experimental cutaneous sporotrichosis. Eighty Wistar rats were used, divided into four groups (TERB20, TERB30, ITRA and CONT). They were inoculated in the left plantar pad with 0.2 ml of solution containing 2x10(3) cell/ml of Sporothrix schenckii and treated with terbinafine (20 and 30 mg/kg), itraconazole (10 mg/kg) or placebo for 13 weeks. The lesions at the inoculation site were evaluated and measured weekly, along with their dissemination. Mycological and histopathological analyses were performed subsequently. The results showed that the animals in the ITRA group differed statistically in all parameters evaluated, in relation to CONT. For terbinafine, there were no statistical differences between the treated and control groups. It could be confirmed that itraconazole presented good activity for treating sporotrichosis, while terbinafine was ineffective for this disease at the doses used. However, more studies on the latter antifungal agent are needed.

[In vitro susceptibility of isolates of Sporothrix schenckii to terbinafine and itraconazole]. / Suscetibilidade in vitro de isolados de Sporothrix schenckii frente à terbinafina e itraconazol.

The study objective was to determine the in vitro activity of terbinafine and itraconazole through the microdilution technique in broth (NCCLSM27-A2), adapted for dimorphic fungus, in relation to 12 isolates of Sporothrix schenckii. Six were from feline sporotrichosis, three from human sporotrichosis, one from a dog and two from human isolates originating from Instituto Oswaldo Cruz. The inoculum and antifungal concentrates were distributed on microplates that were incubated at 35 degrees C for five days. Minimum inhibitory concentration readings were made at the end of this period. The MIC for terbinafine ranged from 0.055 microg/ml to 0.109 microg/ml, and the MIC for itraconazole ranged from 0.219 microg/ml to 1.75 microg/ml. For both drugs, the MIC from the isolates from IOC was 0.875 microg/ml. The present study demonstrates the high susceptibility of Sporothrix schenckii to terbinafine. Further studies to correlate the in vitro susceptibility tests with the clinical response of patients with sporotrichosis are needed.

Efeitos de doses elevadas da terbinafina e itraconazol em ratos Wistar / Effects of high doses of terbinafine and itraconazole in Wistar rats

Levando em consideração a importância do itraconazol e da terbinafina na terapia antifúngica, o estudo tem como objetivo avaliar os efeitos de altas doses de itraconazol (100 mg/kg) e terbinafina (250 mg/kg) em ratos albinos wistar através das análises das enzimas hepáticas (ALT e ALP), hemograma completo e estudo histopatológico de diferentes órgãos. Os fármacos foram administrados pela via oral, uma vez ao dia, por um período de 30 dias, quando foi coletado sangue e realizado a necrópsia dos animais experimentais. Os valores detectados das enzimas hepáticas e do hemograma foram compatíveis aos índices fisiológicos para a espécie estudada não sendo observadas diferenças estatísticas entre os grupos experimentais. A histopatologia não revelou nenhuma anormalidade, porém 25 por cento dos animas tratados com terbinafina morreram imediatamente após a administração do fármaco. Com esses resultados concluiu-se que as doses administradas dos fármacos não alteraram as enzimas hepáticas avaliadas, assim como o hemograma, sendo, no entanto, necessários mais estudos que possibilitem considerar doses elevadas da terbinafina e itraconazol como alternativa terapêutica viável para o tratamento de micoses sistêmicas.

Taking into account the importance of the itraconazole and terbinafine in the antifungal therapy, the study has as objective evaluate the effects of high itraconazole doses (100 mg/kg) and terbinafine (250 mg/kg) in rats albino Wistar through the analyses of the hepatic enzymes (ALT and ALP), complete blood count and histopathologic study of different organs. The drugs were administered orally once a day, for a period of 30 days, when blood was collected and accomplished the necropsy of the experimental animals. The detected values of the hepatic enzymes and of the blood count were compatible to the physiologic indexes for the studied species with no statistical differences among the experimental groups. The histopathologic exam did not reveal any abnormality, however 25 percent of the treated with terbinafine died immediately after the administration of the drug. With those results we concluded that the administered doses of the drugs did not alter the appraised hepatic enzymes, as well as the blood count. However, more studies are needed to consider high doses of the terbinafine and itraconazole as viable treatment alternative for systemic mycosis.