title: Intragastric injection of botulinum toxin A for the treatment of obesity.
abstract: BACKGROUND
  Botulinum toxin A (BTX-A) is a powerful and long-acting inhibitor of muscular contractions in both striated and smooth muscles. Hypothetically, BTX-A should inhibit the acetylcholine-mediated peristalsis, which is mainly responsible for gastric motility, and thereby induce slowed gastric emptying, earlier satiety and weight loss. The aim of this study was to observe the effects of endoscopic intragastric injections of BTX-A in obese patients.
  
  
  METHODS
  After approval by the University Ethics Committee, 10 female patients with class I obesity (body mass index 30-35) were double-blind randomized into 2 groups (BTX-A and 0.9% Saline). In Group 1, 200 U BTX-A were injected endoscopically into the antrum and the distal gastric body. In Group 2, 0.9% saline was injected endoscopically into the antrum and the distal gastric body. Body weight and feeling of satiety were recorded monthly over a period of 6 months.
  
  
  RESULTS
  Both groups (BTX-A and 0.9% Saline) showed no significant weight reduction (P>0.05). One patient in Group 1 and two patients in Group 2 reported a feeling of early satiety. No adverse effects related to BTX-A or complications resulting from the endoscopic procedure were observed.
  
  
  CONCLUSIONS
  Intragastric injection of BTX-A for the treatment of obesity does not seem to reduce body weight.
authors: Department of General and Transplant Surgery, University Hospital, Medical University Innsbruck, Austria. reinhard.mittermair@uki.at
authors: Reinhard
authors: R
authors: Mittermair
authors: Christian
authors: C
authors: Keller
authors: John
authors: J
authors: Geibel
mesh_terms: D000328:Adult; D019274:Botulinum Toxins, Type A / Q000008:administration & dosage*; D004311:Double-Blind Method; D004724:Endoscopy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007267:Injections; D009465:Neuromuscular Agents / Q000008:administration & dosage*; D009765:Obesity / Q000188:drug therapy*; D013270:Stomach; D017211:Treatment Failure
chemical_list: D009465:Neuromuscular Agents; D019274:Botulinum Toxins, Type A