[Experimental pancreatic islet transplant into the genito-urinary tract simultaneous to kidney transplant]. / Trasplante experimental de islotes de pancreas en el tracto genitourinario asociado al trasplante renal.

INTRODUCTION AND OBJECTIVES: Simultaneous kidney and pancreas transplant is a good treatment for both renal and pancreas insufficiency. Experimental apply of genitourinary tract for pancreas implantation is reported in this work. MATERIAL AND METHOD: Twenty animals aged as average 5.5 monts (SD 1.1) and an average weight of 53 kgr were submitted to this protocol. In the day 1 a left nephrectomy is completed and the graft is perfused with University of Wisconsin solution. A partial pancreatectomy is completed at following, isolation of pancreatic islets by colagenase enzymatic digestion. Islets are dryed with Ditizone and culptured for 24 hours at 37 degrees C and 5% CO2. Day-2 a right nephrectomy is performed and orthotopic renal autotransplant using the left kidney is completed. Pancreatic islets are transplanted in 4 different locations of the genitourinary tract: renal subcapsular space, bladder submucosae, testis parenchyma and vas deferens. Day-7, all the animals were sacrifized to complete pathological study. RESULTS AND CONCLUSIONS: Viable islets were isolated in bladder submucosae and testis after transdeferential injection.

Trasplante experimental de islotes de páncreas en el tracto genitourinario asociado al trasplante renal / Experimental pancreatic islet transplant into the genito-urinary tract simultaneous to kidney transplant

Conceptualmente el trasplante de páncreas (TP) asociado al trasplante renal (TR) puede resolver la insuficiencia renal crónica (IRC) y la diabetes (DM). Aunque el lugar de implantación más frecuentemente utilizado es la vena porta, el tracto genitourinario puede ser adecuado desde un punto de vista técnico durante el TR. 20 animales con una edad media de 5,5 (SD 1,1) meses y una mediana de peso de 53 (30,102) kg se sometieron al siguiente protocolo experimental. El primer día, se lleva a cabo la nefrectomía izquierda y el injerto es perfundido con solución de Wisconsin, lo que se sigue de una pancreatectomía distal y el aislamiento de islotes por medio de la digestión enzimática con Colagenasa. Los islotes son teñidos con el colorante vital Ditizona (DTZ) y cultivados durante 24 horas a 37º y 5% de Co2. El día 2 se realiza la nefrectomía derecha y un TR ortotópico del injerto renal izquierdo preservado. Los islotes son trasplantados en 4 localizaciones diferentes en el tracto genitourinario: el espacio subcapsular del injerto renal, en la submucosa de vejiga, en el parénquima testicular y por vía deferencial. El día 7, los animales son sacrificados para estudio histopatológico. Se demostraron islotes viables en la submucosa vesical y en el testículo tras infusión por vía deferencial

Introduction and objectives: Simultaneous kidney and pancreas transplant is a good treatment for both renal and pancreas insufficiency. Experimental apply of genitourinary tract for pancreas implantation is reported in this work. Material and method. Twenty animals aged as average 5.5 monts (SD 1.1) and an average weight of 53 kgr were submitted to this protocol. In the day 1 a left nephrectomy is completed and the graft is perfused with University of Wisconsin solution. A partial pancreatectomy is completed at following, isolation of pancreatic islets by colagenase enzymatic digestion. Islets are dryed with Ditizone and culptured for 24 hours at 37ºC and 5% CO2. Day-2 a right nephrectomy is performed and orthotopic renal autotransplant using the left kidney is completed. Pancreatic islets are transplanted in 4 different locations of the genitourinary tract: renal subcapsular space, bladder submucosae, testis parenchyma and vas deferens. Day-7, all the animals were sacrifized to complete pathological study. Results and conclusions: Viable islets were isolated in bladder submucosae and testis after transdeferential injection