Assessment of jejunoileostomy for obesity--some observations since 1976.

In this review, which only partially covers the data available, it is pointed out that the evaluation of the results of jejunoileostomy may depend upon the criteria used by the observers, and disclosure of the true effects of the operation may depend upon the long-term follow-up of the patients. With increasing length of observation, it has become apparent that problems such as vitamin D deficiency, renal stone formation, continued steatorrhea, gallstones, zinc and copper deficiency, and even renal failure may be seen with disturbing frequency. Some of these may be preventable, others may be correctable and, indeed, the overall incidence of genuinely severe problems may, in the long run, be sufficiently low so as to make the benefits of jejunoileostomy outweigh the hazards. The rate of patient satisfaction is high, quality of life is generally improved and psychosocial and economic benefits of jejunoileostomy are apparent. The operation may also be a better alternative than the physical hazards of continuing obesity. Whether or not gastric bypass represents a true improvement over jejunoileostomy will depend upon the conclusions reached after applying to it the same searching scrutiny that is being used to examine the long-term results of jejunoileostomy.

El trasplante autólogo de células mesoteliales como acelerador y modificador de la cicatrización cutánea en ratas / Autologous mesothelial cells transplantation as accelerator and skin healing modifier in rats

El propósito del presente estudio fue comprobar si el autotrasplante de células mesoteliales peritoneales en heridas de espesor total en ratas acelera y modifica el proceso de cicatrización cutánea normal, basándonos en la teoría de que las células mesoteliales provenientes de tejidos como el peritoneo, pleura o pericardio, son responsables de uno de los procesos de cicatrización más rápidos y sintetizan varios factores estimulantes y quimiotácticos de la cicatrización (causantes de las adherencias intraabdominales),además de que poseen la capacidad de diferenciarse en otras series celulares (plasticidad).Diseñamos un estudio experimental, analítico, longitudinal, prospectivo y comparativo, en el Laboratorio de Cirugía Experimental del Centro Médico ABC Observatorio, México D.F. (México).Se emplearon 15 ratas cepa Wistar, divididas en 2 grupos: Grupo I(n=5) en el que previa anestesia general, se extirparon 3 mm. de diámetro de piel de la región dorsal mediante técnica microquirúrgica y cierre por segunda intención; y Grupo II (n=10) en el que se realizó minilaparotomía con escisión de peritoneo parietal, cierre primario de la misma, escisión de piel de espesor total en región dorsal de 3 mm. de diámetro y colocación del autoinjerto peritoneal en la herida dorsal. En el análisis histológico se revisaron 6 variables: colágeno, fibroblastos, número de vasos, macrófagos, células inflamatorias y grado de retracción, para puntualizar integralmente el tipo y características de la cicatrización en ambos grupos. El análisis estadístico de datos se elaboró con Statistical Package of Social Sciences 17.0. Se realizó estadística descriptiva por medio de medidas de frecuencia, de tendencia central y de dispersión. Los resultados mostraron que los individuos del Grupo I presentaron mayor (..) (AU)

The purpose of this study was to verify if the autologous peritoneal mesothelial cells in full thickness wounds on rats, speed up and adjust the normal skin healing process. Based on the theory that mesothelial cells from tissues such as peritoneum, pleura or pericardium, are responsible for one of the faster healing process and synthesize stimulating wound healing and chemotactical factors (hence the genesis of surgical adhesions),besides possessing the ability to differentiate into other cell series (plasticity).We designed a pilot, analytical, longitudinal, prospective and comparative study in the Laboratory of Experimental Surgery at The American British Cowdray Medical Center, Mexico City (México).Were used 15 Wistar rats which were divided into 2 groups: Group I(n = 5) where after general anesthesia, skin removed 3 mm in diameter with microsurgical technique in the back and was close by secondary intention; and Group II or experimental group (n = 10) where laparotomy was performed with excision of the parietal peritoneum and primary closure, excision of full thickness skin on the dorsal surface of 3mm diameter and peritoneal autograft placement on the dorsal wound. In histological analysis, were reviewed 6 variables: collagen, fibroblasts, number of vessels, macrophages, inflammatory cells and retraction, to point out fully the nature (..) (AU)