{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,20]],"date-time":"2025-10-20T16:33:52Z","timestamp":1760978032328},"reference-count":31,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2002,5,31]],"date-time":"2002-05-31T00:00:00Z","timestamp":1022803200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Annals of Neurology"],"published-print":{"date-parts":[[2002,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The increasing number of patients being treated with botulinum toxin A complex (BoNT\/A) has led to a higher incidence of neutralizing anti\u2010BoNT\/A antibodies (ABAs). Because BoNT\/A is known to inhibit sweating, here we report sudometry as a possibility for predicting the presence of ABA. Sixteen patients suffering from spasmodic torticollis were selected: in 2 patients, BoNT\/A treatment continued to be effective, in 9 patients, the treatment effect was impaired, and in 5 patients, secondary treatment failure developed. BoNT\/A (100 mouse units, Dysport; Ipsen Pharma, Berkshire, United Kingdom) was injected subcutaneously into the lateral calves. Sweating was visualized with iodine starch staining. In addition, quantitative sudomotor axon reflex testing was performed at the injection site. Individual ABA titers were determined with a mouse bioassay. Results of sudometry significantly correlated with the BoNT\/A treatment success. The quantitative sudomotor axon reflex testing was 0.58 \u00b1 0.63 fraction of the normal mean in patients with treatment failure, 0.18 \u00b1 0.13 fraction of the normal mean in those who responded partially, and 0 in responders (<jats:italic>p<\/jats:italic> &lt; 0.01). Accordingly, the areas of the anhidrotic skin after subcutaneous injections were 4.5 \u00b1 10.3cm<jats:sup>2<\/jats:sup>, 32.7 \u00b1 16.5cm<jats:sup>2<\/jats:sup>, and 62cm<jats:sup>2<\/jats:sup> (<jats:italic>p<\/jats:italic> &lt; 0.01). Discrimination analysis indicated that the presence of ABA (6 ABA\u2010positive and 10 ABA\u2010negative) could be predicted correctly in all patients from the results of sudometry. Therefore, sudometry is a useful tool for identifying patients with neutralizing ABAs and might be helpful for identifying reasons for BoNT\/A treatment failure.<\/jats:p>","DOI":"10.1002\/ana.10243","type":"journal-article","created":{"date-parts":[[2002,10,6]],"date-time":"2002-10-06T11:32:01Z","timestamp":1033903921000},"page":"68-73","source":"Crossref","is-referenced-by-count":9,"title":["Sudomotor testing predicts the presence of neutralizing botulinum A toxin 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