BACKGROUND: We investigated the effects of Botox-A on weight loss and gastric emptying in an experimental obese rat model. Although there is evidence of weight loss in normal-weight rats after Botox-A injection, there are no studies indicating the effect of Botox-A injection on weight loss and gastric emptying time in obese rats. METHODS: 37 female Wistar Albino rats were given high calorie diet for 90 days. They were separated into 3 groups. The first group (Botox group) consisted of 15 obese rats whose gastric antrum was injected with 20 U of Botulinum Toxin Type A. The second group (Saline group) consisted of 15 obese rats whose gastric antrum was injected with 20 U of saline. The third group (Control group) had no surgical intervention. Gastric scintigraphy was performed in the 3 groups pre- and postoperatively. RESULTS: The saline group had a weight reduction in the early postoperative days but began to gain weight thereafter. The mean weight of the Botox group between the 16th and 28th days postoperatively was significantly lower than the mean weights of the control and the saline groups (P<0.05, P<0.001). The results of gastric emptying scintigraphy in all 3 groups at day 20 revealed significantly higher T1/2 values in the Botox-A group when compared to the results of the control and saline groups (P<0.001). CONCLUSION: Botox-A application to the gastric antrum in obese rats leads to weight loss by increasing the gastric emptying time.
BACKGROUND: We investigated the effects of Botox-A on weight loss and gastric emptying in an experimental obeserat model. Although there is evidence of weight loss in normal-weight rats after Botox-A injection, there are no studies indicating the effect of Botox-A injection on weight loss and gastric emptying time in obeserats. METHODS: 37 female Wistar Albino rats were given high calorie diet for 90 days. They were separated into 3 groups. The first group (Botox group) consisted of 15 obeserats whose gastric antrum was injected with 20 U of Botulinum Toxin Type A. The second group (Saline group) consisted of 15 obeserats whose gastric antrum was injected with 20 U of saline. The third group (Control group) had no surgical intervention. Gastric scintigraphy was performed in the 3 groups pre- and postoperatively. RESULTS: The saline group had a weight reduction in the early postoperative days but began to gain weight thereafter. The mean weight of the Botox group between the 16th and 28th days postoperatively was significantly lower than the mean weights of the control and the saline groups (P<0.05, P<0.001). The results of gastric emptying scintigraphy in all 3 groups at day 20 revealed significantly higher T1/2 values in the Botox-A group when compared to the results of the control and saline groups (P<0.001). CONCLUSION:Botox-A application to the gastric antrum in obeserats leads to weight loss by increasing the gastric emptying time.
Authors: Mark Topazian; Michael Camilleri; Jose De La Mora-Levy; Felicity B Enders; Amy E Foxx-Orenstein; Michael J Levy; Vandana Nehra; Nicholas J Talley Journal: Obes Surg Date: 2008-02-20 Impact factor: 4.129
Authors: Mark Topazian; Michael Camilleri; Felicity T Enders; Jonathan E Clain; Ferga C Gleeson; Michael J Levy; Elizabeth Rajan; Vandana Nehra; Ross A Dierkhising; Maria L Collazo-Clavell; Nicholas J Talley; Matthew M Clark Journal: Clin Gastroenterol Hepatol Date: 2012-10-09 Impact factor: 11.382