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1.
Actas urol. esp ; 41(7): 445-450, sept. 2017. graf, tab
Artigo em Espanhol | IBECS | ID: ibc-166143

RESUMO

Introducción: El objetivo fue conocer la reproductibilidad en modelo murino de tumores renales de diferentes estirpes histológicas que podría ser útil para investigar la respuesta a fármacos diana. Material y métodos: Desarrollo y análisis del modelo in vivo: xenoinjerto tumoral de carcinoma de células renales con ratones atímicos nude Balb/c. Se implanta tejido renal humano no tumoral en la región interescapular de 5 ratones, tumor renal tipo cromófobo en 5 ratones que tras comprobarse su crecimiento se preparó para implante en otros 10 ratones y tumor renal tipo carcinoma renal de células claras (CRCC) Fuhrman 2 en 5 ratones que también se implantó posteriormente en 10 ratones. Se monitoriza el tamaño tumoral, la aparición de metástasis y el aumento de tamaño y número de las mismas. Cuando alcanza tamaño igual o superior a carcinoma localmente avanzado o metastásico los animales son sacrificados para estudio anatomopatológico, inmunohistoquímico y segunda fase de implante. Resultados: El xenoinjerto subcutáneo del tejido sano no creció, se sacrificaron a los 6 meses sin hallar tejido renal. El carcinoma renal de células cromófobas creció en la primera fase (100%), pero en la segunda fase se observó reacción inflamatoria crónica linfomonocitaria y a cuerpo extraño. El CRCC creció a los 5-8 meses, tanto en la primera como en la segunda fase (100%), manteniendo el tipo y el grado tumoral. Conclusiones: El modelo con ratones atímicos nude Balb/c es útil para reproducir CRCC, con las mismas características y agresividad histológica al tumor humano nativo, alentando al desarrollo de la segunda fase experimental


Introduction: The objective of this study was to determine the reproducibility in a murine model of renal tumours of various histological strains that could be useful for investigating the response to target drugs. Material and methods: Development and analysis of the «in vivo» model: tumour xenograft of renal cell carcinomas with Balb/c nude athymic mice. Nontumourous human renal tissue was implanted in the interscapular region of 5 mice, chromophobe renal cell carcinoma was implanted in 5 mice (which, after checking its growth, was prepared for implantation in another 10 mice) and Fuhrman grade 2 clear cell renal cell carcinoma (CCRCC) was implanted in 5 mice (which was also subsequently implanted in 10 mice). We monitored the tumour size, onset of metastases and increase in size and number of tumours. When the size had reached a point greater than or equal to locally advanced or metastatic carcinoma, the animals were euthanised for a pathological and immunohistochemical study and a second phase of implantation. Results: The subcutaneous xenograft of the healthy tissue did not grow. The animals were euthanised at 6 months and no renal tissue was found. The chromophobe renal cell carcinoma cells grew in the initial phase (100%); however, in the second phase, we observed a chronic lymphomonocyte inflammatory reaction and a foreign body reaction. The CCRCC grew at 5-8 months both in the first and second phase (100%), maintaining the tumour type and grade. Conclusions: The model with athymic Balb/c nude mice is useful for reproducing CCRCC, with the same histological characteristics and aggressiveness as native human tumours, promoting the development of the second experimental phase


Assuntos
Animais , Neoplasias Renais/patologia , Carcinoma de Células Renais/patologia , Modelos Animais de Doenças , Drogas em Investigação , Avaliação de Medicamentos , Antineoplásicos/farmacologia
2.
Arch. esp. urol. (Ed. impr.) ; 67(2): 167-174, mar. 2014. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-119916

RESUMO

OBJETIVOS: Tras trasplante alogénico de células hematopoyéticas aparece cistitis hemorrágica en 13-38% de casos, siendo los síntomas más frecuentes hematuria macroscópica con/sin coágulos, polaquiuria, dolor y espasmos vesicales. Estudiar las características de los pacientes que sufren cistitis hemorrágica tras trasplante de progenitores hematopoyéticos en nuestro centro. MÉTODOS: 500 pacientes recibieron trasplante alogénico de progenitores hematopoyéticos (TAPH) entre enero de 1996 y agosto de 2012, de los cuales 52 sufrieron cistitis hemorrágica. Investigamos edad, sexo, diagnóstico principal, régimen de acondicionamiento, tiempo desde TAPH hasta la cistitis, presencia de poliomavirus en orina, duración de la clínica, tratamiento recibido, supervivencia de los pacientes. RESULTADOS: Edad media 39 años (rango 19-66). 34 varones: 18 mujeres. Diagnóstico: LMA (n=11), LLA (n=8), LMC (n=6), SMD (n=11), LLC (n=5), LNH (n=1), EH (n=5), MM (n=2), Aplasia Medular (n=3). Cistitis hemorrágica a los 59,48 días post-trasplante, sin diferencia entre varones y mujeres. No hubo diferencias en el tipo de acondicionamiento administrado entre varones y mujeres. Se demostró la presencia en orina de Poliomavirus en 78,94% de los supervivientes. 8 pacientes requirieron evaluación por Urología durante el ingreso. Mortalidad de la muestra del 46,15%, ninguna muerte por la cistitis hemorrágica. CONCLUSIONES: La cistitis hemorrágica en pacientes sometidos a trasplante de médula ósea es una patología de alta prevalencia, apareciendo los poliomavirus BK y JC como virus emergentes en su etiología. Se ha de realizar un diagnóstico diferencial con infecciones urinarias de otro origen, causas farmacológicas, trombopenias secundarias a la enfermedad de base y litiasis urinarias. El urólogo participa poco en el manejo de esta patología


OBJECTIVES: Hemorrhagic cystitis (HC) presenting with gross hematuria, bladder pain and urinary frequency develops in 13-38% of patients following bone marrow transplantation (BMT). The objective of the study was to study the characteristics of patients suffering hemorrhagic cystitis after hematopoietic stem cell transplantation in our center. METHODS: We conducted a retrospective chart review of all patients who underwent BMT at our institution between January 1996 and August 2012. We recorded the age, sex, diagnosis, conditioning regimen, interval between BMT and development of symptoms of cystitis and treatment instituted. RESULTS: Five hundred patients underwent BMT in the period of time studied. 52 of them developed hemorrhagic cystitis. The mean age of the affected patients was 39 years; there were 34 males and 18 females. The diagnoses include AML (n=11), ALL (n=8), CML (n=6), MDS (n=11), CLL (n=5), NHL (n=1), HD (n=5), MM (n=2), Medular aplasia (n=3). HC appeared 59.48 days after BMT. There were no differences between sexes. Mortality among the 52 patients was 51.14 % but HC was not the cause of death in any patient. Polyomaviruses were detected in the urine of 78.94 % of survivors. CONCLUSIONS: Polyomavirus infection with BK and JC types is usually acquired in infancy and the virus remains latent in renal tissue. Immunosuppression facilitates reactivation of the renal infection and replication of the virus responsible for the clinical manifestations of HC. The differential diagnoses include other urinary infections, lithiasis, thrombocytopenia and adverse effects of pharmacological agents. The urologist plays a limited role in the management of this disease


Assuntos
Humanos , Cistite/etiologia , Hemorragia/etiologia , Transplante de Medula Óssea/efeitos adversos , Hematúria/etiologia , Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Polyomavirus/patogenicidade , Vírus JC/patogenicidade , Diagnóstico Diferencial , Urolitíase/diagnóstico
3.
Artigo em Inglês | MEDLINE | ID: mdl-22474406

RESUMO

Ureteritis cystica is an uncommon cause of acute renal pain. The aetiology remains unclear and the diagnosis may be difficult to establish. We report the case of a 29 year old woman with a history of repeated urinary tract infections presenting with acute renal colic in the absence of lithiasis. We review the diagnostic tools available to make the diagnosis and the recent pertinent literature.

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