Morfometría del esófago abdominal y del estómago del conejo (Orycotolagus cuniculus): aplicaciones a la cirugía laparoscópica / Morphometry of the abdominal esophagus and stomach of the rabbit: laparoscopyc surgery applications

Actualmente existen pocos estudios sobre la anatomía y fisiología del tracto digestivo del conejo (Orycotolagus cuniculus), estos estudios están encaminados a la nutrición y biología del conejo, pero pocos abordan la anatomía con la visión de un cirujano. Por otro lado existen algunos estudios que proponen al conejo como modelo animal para cirugías laparoscópicas del esófago distal y el estómago. En la mayoría de los casos se utiliza como modelo sin tener en cuenta las características anatómicas específicas de esta especie, por lo que es fundamental realizar un estudio anatómico de la zona del esófago abdominal, cardias y estómago del conejo, que exprese las características y diferencias anatómicas para que los cirujanos estén más familiarizados antes de realizar prácticas laparoscópicas en esta especie. Una diferencia importante es la presencia de una porción grande de esófago abdominal. Está descrito que animales con porciones grandes de esófago abdominal, no tienen la posibilidad de regurgitar o vomitar. Esta diferencia anatómica es muy importante cuando se pretende usar a estos animales como modelo para la enfermedad por reflujo gastroesofágico (ERG).El presente trabajo se realiza con los objetivos de proporcionar a los cirujanos un estudio anatómico que permita conocer la zona del esófago abdominal, cardias y estómago del conejo, para que tengan conocimiento de las características propias en esta especie y las diferencias con el humano, en su uso como modelo animal para la cirugía del cardias y el estómago. Se realizaron medidas anatómicas al esófago y estómago de 18 conejos Nueva Zelanda Blancos de 2.5 a 3.5 Kg de peso de ambos sexos. Donde encontramos que el conejo presenta un una porción grande de esófago abdominal así como un estómago grande con una gran proporción de fundus gástrico.

Actuality, there are few studies about rabbits (Orycotolagus cuniculus) digestive tract anatomy and physiology. These studies are designed at nutrition and biology of the rabbit. But few deal with the anatomy of a surgeon's vision.There are also some researches that propose rabbits as laparoscopic surgery animal model for of the distal oesophagus and stomach. In most cases is used as a model without considering the specific anatomical characteristics of this species. So it is essential to make an anatomical study of the abdominal oesophagus, cardia, and stomach of the rabbit. This should express the characteristics and anatomical differences between species. On the way to that surgeon are more familiar before performing laparoscopic practices in this species. An important difference is the presence of a large portion of abdominal oesophagus. There is reported that animals with large portions of abdominal oesophagus, can not vomit or regurgitate. This anatomical difference is very important when trying to use these animals as a model for gastroesophageal reflux disease. This work is done with the objectives of providing surgeons an anatomical study of the abdominal esophagus, cardia and stomach of the rabbit, to have knowledge of the characteristics in this species and the differences with humans, when used as surgical animal model. Anatomical measures were made to the oesophagus and stomach of 18 males and females New Zealand White rabbits. Between 2,5 to 3,5 Kg. We find that the rabbit has a large portion of an abdominal oesophagus and a large stomach with a large proportion of gastric fundus.

The Effects of Celecoxib on Wound Healing in Murine Wound Models / 대한이비인후과학회지

BACKGROUND AND OBJECTIVES: Celecoxib has suppressive effects on the growth, angiogenesis, metastasis of solid tumors including head and neck squamous cell carcinoma. Recent report suggests that celecoxib can also be usefully applied for preventing tumor recurrence in the postoperative conditions with possible residual tumors. The aim of this study is to investigate the effects of celecoxib on the post-surgical wound healing and the systems including the gastro-intestinal (GI) tracts. MATERIALS AND METHOD: Incisional and excisional wound models were created in the C3H mice and celecoxib was administered at a dose of 20 mg/kg/day to the wounded mice. Photographic documentation of the wounds was performed every week. The mice were serially sacrificed 3, 7, 14, and 28 days after wounding. The re-epithelialization and capillary number of the wounded skin were measured and the side effects of celecoxib were observed. RESULTS: Re-epithelialization was suppressed by celecoxib only in the early phase at the day 10 of wounding, which was all recovered in the late phase at day 14. The capillary number of the wounded bed was not affected by the celecoxib treatment. In addition, celecoxib had no significant side effects on the body weight change and the GI tracts of the wounded mice. CONCLUSION: This murine wound models suggest that celecoxib is a safe drug with no significant side effects to treat late wound healing or the GI tracts.