Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 6 de 6
Filtrar
Mais filtros










Filtros aplicados

Base de dados
Tipo de estudo
Intervalo de ano de publicação
2.
Eur. j. anat ; 18(3): 175-182, jul. 2014. ilus
Artigo em Inglês | IBECS | ID: ibc-125136

RESUMO

The gross morphology and histology of the skin of the trunk and paw pads in the African giant pouched rat were investigated to evaluate their role in the adaptation of the rodent to its subterranean environment. Samples were stained with haematoxylin and eosin, Masson’s trichrome, Alcian blue, Verhoeff's haematoxylin counterstained with Van Gieson, and Weigert’s haematoxylin counterstained with Picro-Ponceau stains. Dorsally, fur covering the skin was loosely folded. Fur covered the entire trunk to the level of the radiocarpal and talocrural joints of the forelimb and hindlimbs, respectively. Skin of the dorsum was paler than its grey-coloured fur, while skin of the ventrum was dirty white. There were more hair follicles dorsally then ventrally. The manus and pes had five and six paw pads, respectively. Keratinocytes in the epidermis of the paw pads decreased in number and lost their cellular contents as they migrated towards the stratum lucidum. Metatarsal pads had a significantly (P < 0.001) thicker stratum corneum than metacarpal pads. Elastic fibres were observed in the metatarsal pads. Other results and additional information from the literature were integrated to propose the effect of the structures on the adaptation of the African giant pouched rat to its subterranean environment and tropical climate


No disponible


Assuntos
Animais , Ratos , Pele/anatomia & histologia , Estruturas Animais/anatomia & histologia , Muridae/anatomia & histologia , Cricetinae/anatomia & histologia , Roedores/anatomia & histologia
3.
Eur. j. anat ; 14(1): 35-38, mayo 2010. ilus, tab
Artigo em Inglês | IBECS | ID: ibc-107650

RESUMO

Here we report a fourteen-month-old fourleggedlocal hen in Nigeria with two cloacae and three caeca. The hen walked with only the normal two limbs, which were larger and cranial to the extra two limbs. The extra limbs were usually suspended in the air and pointed caudally during motion, being attached to the pygostyle by cartilage and skin tissue. Investigations of the bird were carried out using radiology ,necropsy findings and biometry. The intestines occupied the caudodorsal portion of the abdominal cavity with three caeca attached at the terminal end of the ileum; two on the right side of the median plane and one on the left. The right caecum was fused and had a divided distal end, terminating in two blind sacs. The hen had two cloacal openings, one on each side of the median plane and was observed to consistently defecate only through the right. The findings from our work provide information on multiple development alabnormalities in the hen (AU)


No disponible


Assuntos
Animais , Anormalidades Múltiplas/diagnóstico , Anormalidades Musculoesqueléticas/veterinária , Estruturas Animais/anormalidades , Aves/anormalidades
4.
Rev. derecho genoma hum ; (29): 111-129, jul.-dic. 2008.
Artigo em Inglês | IBECS | ID: ibc-89232

RESUMO

El Xenotrasplante, técnica terapéutica consistente en el trasplante en seres humanos de órganos, tejidos o células procedentes de animales inferiores, suscita desde hace años importantes expectativas en el seno de la comunidad científica internacional al objeto de lograr hacer frente de un modo efectivo a la escasez de órganos en la esfera del trasplante. La presente contribución pretende establecer el marco normativo existente en España en la actualidad, de posible incidencia en materia de Xenotrasplante (AU)


Xenotransplantation, as a therapeutically technique consisting in the transplantation in human beings of organs, tissues and cells from animals, has given rise to important expectations in the scientific comunity so as to achieve an effective solution to the scarcity of human organs for alotransplantation. The present contribution establishes the legal framework existing in Spain which could be applicable in the field of Xenotransplantation (AU)


Assuntos
Humanos , Transplante Heterólogo/tendências , Obtenção de Tecidos e Órgãos/tendências , Transplante de Órgãos/tendências , Estruturas Animais
5.
Rev. iberoam. micol ; 23(3): 185-188, sept. 2006. tab, ilus
Artigo em Inglês | IBECS | ID: ibc-75387

RESUMO

Ambrosia fungi live associated with beetles (Scolytidae and Platypodidae) in host trees and act as a food source for the insects. The symbiotic relation is important to the colonizing strategies of host trees by beetles. Ambrosia fungi are dimorphic: they grow as ambrosial form and as mycelium. The fungi are highly specialized, adapted to a specific beetle and to the biotope where they both live. In addition other fungi have been found such as tree pathogenic fungi that may play a role in insects host colonization success. Saprophytic fungi are also present in insects galleries. These may decompose cellulose and/or be antagonistic to other less beneficial fungi. This paper summarizes the importance of ambrosia fungi and the interaction with insects and hosts. The possibility of the transport of pathogenic fungi by Platypus cylindrus to cork oak thus contributing for its decline is discussed(AU)


Assuntos
Animais , Feminino , Ascomicetos/isolamento & purificação , Ascomicetos/fisiologia , Besouros/microbiologia , Quercus/microbiologia , Quercus/fisiologia , Xylariales/isolamento & purificação , Xylariales/fisiologia , Estruturas Animais/microbiologia , Besouros/anatomia & histologia , Besouros/fisiologia , Doenças das Plantas/microbiologia , Portugal/epidemiologia , Especificidade da Espécie , Simbiose , Madeira/microbiologia
6.
Allergol. immunopatol ; 32(2): 69-75, mar. 2004.
Artigo em Inglês | IBECS | ID: ibc-31307

RESUMO

Contact with the pine processionary caterpillar induces dermatitis, usually located in exposed areas, and, less frequently, ocular lesions through a toxic-irritative mechanism. Recently, the existence of an immediate hypersensitivity mechanism has been demonstrated, mainly in occupationally exposed patients. Objective: To present four patients who experienced allergic reactions (urticaria-angioedema and rhinitis-asthma) after non-occupational exposure to pine processionary caterpillar. Patients and methods: The four patients underwent allergy testing through skin prick tests (SPT), specific IgE detection and SDS-PAGE immunoblotting. One patient also underwent a specific bronchial challenge test with the pine processionary antigen. Results: In all patients, both SPT with the caterpillar extract and specific IgE were positive. Western blotting showed several IgE-binding bands with molecular mass values ranging from 18 to 107 kDa. A shift in the electrophoretic mobility of some of the relevant allergens occurred under the presence of a reductive agent (β -mercaptoethanol). The specific bronchial challenge test with pine processionary antigen performed in one of the patients also produced positive results. Conclusions: The results of this study show an immunologic IgE-mediated immediate hypersensitivity mechanism in these reactions. The processionary caterpillar's airborne urticating hairs or spicules should be considered, at least in some locations, not only as contact and occupational allergens, but also as seasonal aeroallergens (AU)


El contacto con la procesionaria del pino produce cuadros cutáneos, localizados generalmente en zonas expuestas, y, con menos frecuencia, oculares por un mecanismo toxico-irritativo. Recientemente, se ha demostrado un mecanismo de hipersensibilidad inmediata fundamentalmente en trabajadores expuestos ocupacionalmente. Objetivo: Presentar cuatro casos de pacientes que sufrieron reacciones alérgicas (urticaria-angioedema y rinitis-asma bronquial) tras exposición no ocupacional a procesionaria del pino.Material y métodos: En los cuatro pacientes se realizó estudio alergológico mediante pruebas cutáneas en prick, detección de IgE específica y SDSPAGE inmunotransferencia; siendo sometido, además, uno de los enfermos a prueba de provocación bronquial específica. Resultados: En todos los pacientes tanto la prueba cutánea con el extracto de oruga como la detección de IgE específica fueron positivas. En la inmunotransferencia se detectaron varias bandas fijadoras de IgE, con masas moleculares comprendidas entre 18 y 107 kDa. La movilidad electroforética de alguno de los alergenos relevantes se modifica por la presencia de un agente reductor ( Beta-mercaptoetanol). La prueba de provocación bronquial específica con Ag.de procesionaria del pino realizada en uno de los pacientes resultó, igualmente, positiva. Conclusiones: Los resultados del estudio efectuado muestran un mecanismo inmunológico de hipersensibilidad inmediata mediado por IgE en estas reacciones. Las espículas urticantes aerotransportadas de la procesionaria deberían considerarse, al menos en algunas localizaciones, como neumoalergenos estacionales y no sólo desde el punto de vista ocupacional (AU)


Assuntos
Masculino , Pessoa de Meia-Idade , Feminino , Adulto , Humanos , Animais , Criança , Urticária , Imunoglobulina E , Proteínas de Insetos , Larva , Mariposas , Extratos de Tecidos , Hipersensibilidade Imediata , Espanha , Angioedema , Alérgenos , Estruturas Animais , Asma , Dermatite Alérgica de Contato , Testes Cutâneos , Testes de Provocação Brônquica , Rinite Alérgica Sazonal
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA