ABSTRACT
The contents of soybean can modify the structure of the reproductive system, especially, when consumed for prolonged periods. In this study, we evaluated the effects of the consumption of transgenic soybean on rat penis morphology after prolonged use. Wistar rats (n = 30) were divided into three groups according to diet: Transgenic Soybean (TS) group, Organic Soybean (OS) group and Control (C) group. After 455 days of intake, the rats were sacrificed and the penises were excised and fixed in formalin for subsequent histological processing. The samples were stained with hematoxylin and eosin, Weigerts resorcin-fuchsin stain, and picrosirius red with polarization. The images were scanned for the histomorphometric analyses of the corpora cavernosa, corpus spongiosum, erectile tissue, and tunica albuginea as well as the measurement of the thickness of the tunica albuginea. The diameter and areas of the penile arteries with the intima and media tunica were also measured. The elastic fibers of the tunica albuginea, corpora cavernosa and corpus spongiosum were quantified using stereological methods. No significant differences were observed in the collagen and elastic components among the groups. We concluded that no statistically significant differences were found among the groups, demonstrating that the prolonged consumption of OS and TS does not affect the penile structure.
El contenido de frijoles de soja puede modificar la estructura del sistema reproductivo, especialmente, cuando se consume durante períodos prolongados. En este estudio, se evaluaron los efectos del consumo de frijoles de soja transgénica en la morfología del pene de rata después de un uso prolongado. Las ratas Wistar (n = 30) se dividieron en tres grupos según la dieta: grupo de frijoles de soja transgénica (TS), grupo de frijoles de soja orgánica (OS) y grupo control (C). Después de 455 días de ingesta, se sacrificaron las ratas y se extirparon los penes y se fijaron en formalina para posterior procesamiento histológico. Las muestras se tiñeron con hematoxilina y eosina, tinción de resorcina-fucsina de Weigert y rojo de picrosirius con polarización. Las imágenes fueron escaneadas para análisis histomorfométrico de los cuerpos cavernosos, cuerpo esponjoso, tejido eréctil y túnica albugínea, así como para la medición del espesor de la túnica albugínea. También se midieron el diámetro y las áreas de las arterias penianas con las túnicas íntima y media. Se cuantificaron las fibras elásticas de la túnica albugínea, cuerpos cavernosos y cuerpos esponjosos utilizando métodos estereológicos. No se observaron diferencias significativas en los componentes colágenos y elásticos entre los grupos. Se concluyó que no se encontraron diferencias estadísticamente significativas entre los grupos, lo que demuestra que el consumo prolongado de OS y TS no afecta a la estructura del pene.
Subject(s)
Animals , Male , Rats , Aging , Diet , Penis/drug effects , Glycine max/chemistry , Plants, Genetically Modified , Rats, WistarABSTRACT
The Baturité Mountain Range, located in the State of Ceará (BRA), displays on its highest levels a vegetation viewed as a disjunction from the Atlantic Forest in the East of Brazil. Among the various attributes associated with this vegetation, the abundance of water resources and a high biodiversity have a more outstanding relevance. However, in view of the current accelerated deforestation process, those attributes may be threatened in a near future. Therefore, the present work is a comparative study with its focus on vegetal community organization (tree sinusiae) and the floristic similarity and the phytodiversity of two areas in different successive stages, preserved and deforested 24 years ago. The aim of that intent was to obtain information that could essentially shed light on the deforestation effects on tree vegetation and which could suggest scientific support regarding urgent projects of habitat reconstruction. The methodology used folowed the model utilized for rain forest, i.e. consisting of a random distribution of 10 x 20 m plots surveying the living woody species with DBH > or = 5 cm. The results obtained suggest that a possible new physiognomy type is emerging on the Baturite Mountain Range because of deforestation. The Myrtaceae and Mimosaceae families were the ones that contributed most significantly to species richness, being the most outstanding for Areas 1 and 2, respectively. The deforestation which occurred in Area 2 eliminated 28 species and gave birth to a current densely distinct floristic composition
Subject(s)
Trees/physiology , Ecosystem , Brazil , Conservation of Natural Resources , Species Specificity , Tropical ClimateABSTRACT
Com o objetivo de subsidiar programas de formaçäo de Recursos Humanos para o atendimento do paciente aidético, foi desenvolvido e validado um questionario para avaliar as atitudes de profissionais de saude frente as tres aspectos da aiods; a doença em si, o paciente e o atendimento. Considerando o referencial teorico de Fishhbein e Aizen (1975), foram administradas escalas de probabilidade (b) e de Avaliaçäo (e) numa amostra de 240 profissionais do Hospital das Clínicas da FMRP-USP, composta por 62 Médicos, 116 sujeitos do Serviço de Enfermagem, 12 técnicos de Laboratorios e 50 funcionarios do Apoio Operacional. Além da adequaçäo das escalas construídas, os resultados indicaram diferenças significantes entre médicos e profissionais de outras especialifdades quanto as atitudes frente ao tratamento dispensado ao paciente com aids. Tais diferenças foram discutidas em funçäo da diversidade das competencias características a cada subgrupo profissional. Além disso, novas perspectivas para a utilizaçäo das escalas säo apontadas
Subject(s)
Acquired Immunodeficiency Syndrome , Attitude to Health , Professional-Patient Relations , Surveys and Questionnaires , Allied Health Personnel , Clinical Competence , Patient Care TeamABSTRACT
Os autores estudaram 14 doentes portadores de pancreatite aguda grave. Doze desses doentes foram submetidos a intervencoes cirurgicas e os demais foram tratados clinicamente. Em todos os doentes submetidos a intervencao cirurgica foi possivel localizar pancreaticas e peripancreaticas, bem como efetuar o tratamento adequado. Em apenas 1 dos 14 casos o diagnostico foi estabelecido exclusivamente pela tomografia computadorizada, havendo, nos demais casos sinais clinicos e laboratoriais caracteristicos. A localizacao precisa das lesoes necroticas e das colecoes liquidas permitiu tratamento cirurgico eficiente de todos os pacientes, tendo a mortalidade atingido apenas 14,2% dos casos
Subject(s)
Adult , Middle Aged , Humans , Male , Female , Pancreatitis , Tomography, X-Ray Computed , Surgical Procedures, OperativeABSTRACT
Os autores se referem a utilizacao da tomografia computadorizada no estudo das lesoes tumorais da laringe. E descrita a anatomia regional normal, acompanhada de ilustracoes esquematicas e dos cortes tomograficos correspondentes. A seguir, sao feitas consideracoes sobre a tecnica de exame e avaliados por este metodo cinco pacientes portadoroes de neoplasia laringea