{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T15:48:34Z","timestamp":1791388114632,"version":"4.3.3"},"reference-count":32,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2004,10,8]],"date-time":"2004-10-08T00:00:00Z","timestamp":1097193600000},"content-version":"vor","delay-in-days":3387,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Annals of Neurology"],"published-print":{"date-parts":[[1995,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Multifocal motor neuropathy (MMN) is associated with serum autoantibodies to gangliosides, but their pathogenic role is uncertain. We have used a novel approach to study the effects of serum and plasma from 8 patients with this syndrome, 6 of whom were anti\u2010GM1 positive. The nerve stimulus required to evoke muscle contraction and endplate potentials (EPPs) was measured in the mouse phrenic nerve\u2014diaphragm preparation during 4 to 6 hours of direct application (plasma at 1:1 or serum 1:2 dilution) and following intraperitoneal injection of plasma (1 ml\/day) for 1 to 5 days (\u201cpassive transfer\u201d). Direct application of MMN serum or plasma produced a progressive increase in stimulus threshold, followed by complete block of nerve\u2010evoked muscle contraction in 3 cases, and an associated decline to about 50% of the EPP amplitude followed by sudden loss of EPPs. These effects were complement independent. Even with complete block of nerve\u2010evoked EPPs, miniature EPP (MEPP) frequency could be increased by raising external K<jats:sup>+<\/jats:sup> to depolarize the nerve terminal directly. Passive transfer of 1 ml of MMN plasma (n = 5) for 3 days caused similar but less marked changes. These results demonstrate that serum factors in MMN can block nerve conduction at distal motor nerves.<\/jats:p>","DOI":"10.1002\/ana.410380118","type":"journal-article","created":{"date-parts":[[2005,1,1]],"date-time":"2005-01-01T16:19:23Z","timestamp":1104596363000},"page":"111-118","source":"Crossref","is-referenced-by-count":88,"title":["Multifocal motor neuropathy human sera block distal motor nerve conduction in mice"],"prefix":"10.1002","volume":"38","author":[{"given":"Mark","family":"Roberts","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hugh 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