Linked Life Data

9089663

Source:http://linkedlifedata.com/resource/pubmed/id/9089663

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1997-7-23
pubmed:abstractText
We investigated the efficacies and potencies of two commercial preparations of botulinum neurotoxin type A (BoNt/A) reputed to differ in potency. Tests were conducted in vitro using the mouse phrenic nerve-hemidiaphragm which is an approved tool for measuring clostridial toxicity. In addition, in a double-blind trial on volunteers, varying amounts of one product were injected into the Musculus extensor digitorum brevis of the left foot, while equal amounts, i.e. units, of the other preparation were injected into the same muscle of the right foot. Compound muscle action potentials (CMAPs) were recorded before and at various points in time after the injections. As opposed to wide-spread anecdotal reports, no difference in effectiveness was found. The dose-response curves obtained from the mouse organ preparation with both commercial products equalled one another in potency (number of units) and corresponded to previous toxicity tests in mice conducted elsewhere. Dose-response curves from volunteers were also identical for both commercial preparations. The time course of paralysis and recovery of muscle function did not differ either. At lower concentrations of toxin, however, restoration of muscle function was more rapid than at higher concentrations. Since the results obtained from man and the animal organ preparation are in excellent accord, we conclude that 1 unit of Botox corresponds to 1 unit of Dysport.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0028-1298
pubmed:author
pubmed:issnType
Print
pubmed:volume
355
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
335-40
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Botulinum A toxins: units versus units.
pubmed:affiliation
Department of Neurology, Medical School of Hannover, Germany.
pubmed:publicationType
Journal Article, Clinical Trial, Comparative Study, In Vitro, Controlled Clinical Trial