Neuromuscular Disorders
Volume 19, Issue 12 , Pages 828-832 , December 2009

Ephedrine therapy in eight patients with congenital myasthenic syndrome due to DOK7 mutations

  • U. Schara

      Affiliations

    • Dept. of Pediatric Neurology, University of Essen, Germany
    • Corresponding Author InformationCorresponding author. Address: Dept. of Pediatric Neurology, University of Essen, Hufelandstr. 55, D-45122 Essen, Germany. Tel.: +49 201 723 2356; fax: +49 201 723 5389.
  • ,
  • N. Barisic

      Affiliations

    • Dept. of Pediatrics, Clinical Medical Center, University of Zagreb, Croatia
  • ,
  • M. Deschauer

      Affiliations

    • Dept. of Neurology, Martin-Luther-University, Halle-Wittenberg, Germany
  • ,
  • C. Lindberg

      Affiliations

    • Neuromuscular Centre, Sahlgrenska University Hospital, Gothenburg, Sweden
  • ,
  • V. Straub

      Affiliations

    • Institute of Human Genetics, University of Newcastle upon Tyne, Newcastle upon Tyne, UK
  • ,
  • N. Strigl-Pill

      Affiliations

    • Friedrich-Baur-Institute, Dept. of Neurology, Ludwig-Maximilians-University, Munich, Germany
  • ,
  • M. Wendt

      Affiliations

    • Dept. of Neurology, Martin-Luther-University, Halle-Wittenberg, Germany
  • ,
  • A. Abicht

      Affiliations

    • Friedrich-Baur-Institute, Dept. of Neurology, Ludwig-Maximilians-University, Munich, Germany
  • ,
  • J.S. Müller

      Affiliations

    • Institute of Human Genetics, University of Newcastle upon Tyne, Newcastle upon Tyne, UK
  • ,
  • H. Lochmüller

      Affiliations

    • Institute of Human Genetics, University of Newcastle upon Tyne, Newcastle upon Tyne, UK

Received 25 August 2009 ,Accepted 21 September 2009.

References 

  1. Beeson D, Webster R, Cossins J, Lashley D, Spearman H, Maxwell S, et al. Congenital myasthenic syndromes and the formation of the neuromuscular junction. Ann NY Acad Sci. 2008;1132:99–103
  2. Engel AG. Congenital myasthenic syndromes. In:  Engel AG editors. Handbook of clinical neurology. Neuromuscular junction disorders. vol. 91:Elsevier; 2008;p. 285–331
  3. Engel AG, Shen XM, Selcen D, Sine SM. Further observation in congenital myasthenic syndromes. Ann NY Acad Sci. 2008;1132:104–113
  4. Kinali M, Beeson D, Pitt MC, Jungbluth H, Simonds AK, Aloysius A, et al. Congenital myasthenic syndromes in childhood: diagnostic and management challenges. J Neuroimmunol. 2008;201–202:6–12
  5. Müller JS, Mihaylova V, Abicht A, Lochmüller H. Congenital myasthenic syndromes: spotlight on genetic defects of neuromuscular transmission. Expert Rev. 2007;9:1–20
  6. Nogajski JH, Kiernan MC, Ouvrier RA, Andrews PI. Congenital myasthenic syndromes. J Clin Neurosci. 2009;16:1–11
  7. Palace J, Beeson D. The congenital myasthenic syndromes. J Neuroimmunol. 2008;15:201–202
  8. Maselli RA, Ng JJ, Anderson JA, Cagney O, Arredondo J, Williams C, et al. Mutations in LAMB2 causing a severe form of synaptic congenital myasthenic syndrome. J Med Genet. 2009;46:203–208
  9. Okada K, Inoue A, Okada M, Murata Y, Shigeru K, Jigami T, et al. The muscle protein DOK-7 is essential for neuromuscular synaptogenesis. Science. 2006;312:1802–1805
  10. Beeson D, Higuchi O, Palace J, et al. Dok-7 mutations underlie a neuromuscular junction synaptopathy. Science. 2006;3:1975–1978
  11. Hamuro J, Higuchi O, Okada K, Ueno M, Iemura S, Natsume T, et al. Mutations causing DOK7 congenital myasthenia ablate functional motifs in Dok-7. J Biol Chem. 2008;283:5518–5524
  12. Vogt J, Morgan V, Marton T, Maxwell S, Harrison B, Beeson D, et al. Germline mutation in DOK7 associated with foetal akinesia deformation sequence. J Med Genet. 2009;46:338–340
  13. Yamanashi Y, Higuchi O, Beeson D. Dok-7/MuSK signalling and a congenital myasthenic syndrome. Acta Myol. 2008;XXVII:25–29
  14. Andersen J, Ng JJ, Bowe C, McDonald C, Richman DP, Wollmann RL, et al. Variable phenotypes associated with mutations in DOK7. Muscle Nerve. 2008;37:448–456
  15. Müller JS, Herczegfalvi A, Vilchez JJ, Colomer J, Bachinski LL, Mihaylova V, et al. Phenotypical spectrum of DOK7 mutations in congenital myasthenic syndromes. Brain. 2007;130:1497–1506
  16. Palace J, Lashley D, Newsom-Davis J, Cossins J, Maxwell S, Kennett R, et al. Clinical features of the DOK7 neuromuscular junction synaptopathy. Brain. 2007;130:1507–1515
  17. Selcen D, Milone M, Shen XM, Harper C, Stans AA, Wieben ED, et al. Dok-7 myasthenia: phenotypic and molecular genetic studies in 16 patients. Ann Neurol. 2008;64:71–87
  18. Engel AG. The therapy of congenital myasthenic syndromes. Neurotherapeutics. 2007;4:252–257
  19. Schara U, Lochmüller H. Therapeutic strategies in congenital myasthenic syndromes. Neurotherapeutics. 2008;5:542–547
  20. Brooke MH, Griggs RC, Mendell JR, Fenichel GM, Shumate JB, Pellegrino RJ. Clinical trials in Duchenne dystrophy. I. The design of a protocol. Muscle Nerve. 1981;4:186–197
  21. Medical Research Council. Aids to the investigation of peripheral nerve injuries. War memorandum. Revised 2nd ed. London: HMSO; 1943.
  22. Bestue-Cardiel M, Sáenz de Cabezón-Alvarez A, Capablo-Liesa JL, et al. Congenital endplate acetylcholinesterase deficiency responsive to ephedrine. Neurology. 2005;65:144–146
  23. Milone M, Engel AG. Block of endplate acetylcholine receptor channel by the sympathomimetic agents ephedrine, pseudoephedrine and albuterol. Brain Res. 1996;18:346–352
  24. Sieb J, Engel AG. Ephedrine: effects on neuromuscular transmission. Brain Res. 1993;623:167–171
  25. Wallgren-Pettersson C, Bushby K, Mellies U, Simonds A. 117th ENMC workshop: ventilatory support in congenital neuromuscular disorders – congenital myopathies, congenital muscular dystrophies, congenital myotonic dystrophy and SMA (II), 4–6 April 2003, Naarden, The Netherlands. Neuromuscul Disord. 2004;14:56–69
  26. Mellies U, Dohna-Schwake C. Neuromuscular disorders. In:  Hammer J,  Eber E editor. Pediatric pulmonary function testing. Progress in respiratory research. vol. 33:Basel: Karger; 2005;p. 1–14

PII: S0960-8966(09)00622-1

doi: 10.1016/j.nmd.2009.09.008

Neuromuscular Disorders
Volume 19, Issue 12 , Pages 828-832 , December 2009