from PART THREE - FILLERS AND NEUROTOXINS
Published online by Cambridge University Press: 06 July 2010
Following the publication by J. D. A. Carruthers in 1992, botulinum toxin injections started being used for the treatment of wrinkles caused by certain muscle hyperactivity.
The botulinum toxins type A (BtxA), developed by Allergan Inc. in the United States (BOTOX) and by Beaufour Ipsen in Europe (Dysport), have a parallel history, both being initially used for the treatment of muscle spasms. BOTOX was first, being introduced in the United States in 1985, while Dysport started being used in Europe in 1988. (Dysport is also distributed in France by Gallderma under the name AZZALURE.)
They are both very effective and reliable products. Long-term use in large numbers of patients has demonstrated a lack of secondary effects other than those predictable due to diffusion of the toxin to muscles adjacent to those for which treatment was intended. The site of action of botulinum toxins is shown in Figure 38.1. Over time, improved understanding of anatomy, use of appropriate injection volumes, and improved injection techniques have greatly reduced the incidence of these types of complications.
This empirical knowledge was recently confirmed by results of the scientific studies conducted by Dr. B. Ascher to obtain certification for the product in France. There were nine international well designed clinical studies involving 3,500 patients and up to 6 months of follow-up. Several of these studies have been published: Two Phase II dose-finding studies (Ascher 2004, Monheit 2007)
One Phase II safety dose1, and one Phase III single-treatment studies (Rzany 2006)
One Phase III repeat-treatment studies (Ascher 2005)
[…]
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.