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Delayed Dıiognosis of Congenital Myasthenic Syndrome

Yıl 2016, Cilt: 30 Sayı: 2, 85 - 88, 21.10.2016

Öz

Congenital myasthenic syndromes (CMS) are rare, clinically and genetically heterogeneous group of disorders characterized with many genetic mutations causing neuromuscular transmission disfunctions. A 45 year old female patient with bilateral ptosis, ophthalmoplegia, dysphagia and proximal dominant weakness in all limbs was presented. We learned that she had walking disability, difficulty in standing up and fatigue since 2 year old. Antibody negative and thorax tomography normal patient had been followed up with the diagnosis of myasthenia gravis since 12 year old. Decrement response were achieved with 3 Hz repetetive stimulation. Muscular atrophy was observed in muscle biopsy compatible with neuromuscular junction disease. During follow up with the treatment of pridostigmin her complaints improved partially. Genotype and symptoms are not specific in CMS and has a wide spectrum. In the cases of unresponsive immunomodulatory therapy, with a detailed clinical history and muscle biopsy, the diagnosis should be kept in mind.


Kaynakça

  • Referans1 Engel AG, Shen XM, Selcen D, Sine SM. Congenital myasthenic syndromes: pathogenesis, diagnosis, and treatment. Lancet Neurol 2015;14:420–34.
  • Referans2 Schara U, Della Marina A, Abicht A. Congenital myasthenic syndromes:current diagnostic and therapeutic approaches. Neuropediatrics 2012;43(4);184-193.
  • Referans3 Jagtap SA, Abraham K, Sarada C and Nair MD. Congenital myasthenic syndromes: Natural history and long-term prognosis. Ann Indian Acad Neurol 2013;16(3):338–341.
  • Referans4 Mülayim S, Uludağ B, Karasoy H. Konjenital miyastenik sendromlarda elektrofizyolojik özellikler. Ege Tıp Dergisi / Ege Journal of Medicine 2008;47(1):15-19.
  • Referans5 Webster R, Liu WW, Chaouch A, Lochmuller H, Beeson D. Fast-channel congenital myasthenic syndrome with a novel acetylcholine receptor mutation at the a–e subunit interface. Neuromuscular Disorders 2014;24(2):143–147.
  • Referans6 Gallenmüller C, Muller-Felber W, Dusl M, Stucka R, Guergueltcheva V, Blaschek A et al. Salbutamol-responsive limb-girdle congenital myasthenic syndrome due to a novel missense mutation and heteroallelic deletion in MUSK. Neuromuscular Disorders 2014;24(1):31–35.
  • Referans7 Nizamani NB, Talpur KI, Memon MN. Congenital Myasthenia Gravis. Journal of the College of Physicians and Surgeons Pakistan 2013;23(7): 517-518.
  • Referans8 Hantai D, Nicolea S, Eymar B. Congenital myasthenic syndromes: an update. Curr Opin Neurol 2013;26(1):561–568.
  • Referans9 Finlayson S, Beeson D, Palace J. Congenital myasthenic syndromes: an update. Pract Neurol 2013;13(2):80–91.
  • Referans10 Cruza PMR, Palacea J, Beesona D. Congenital myasthenic syndromes and the neuromuscular junction. Curr Opin Neurol 2014;27(5):566–575.
  • Referans11 Guo Y, Menezes MJ, Menezes MP, Liang J, Li D, Riley LG et al. Delayed diagnosis of congenital myasthenia due to associated mitochondrial enzyme defect. Neuromuscul Disord 2015;25(3):257-61.

Geç tanı konjenital miyastenik sendrom

Yıl 2016, Cilt: 30 Sayı: 2, 85 - 88, 21.10.2016

Öz

Konjenital
miyastenik sendrom (KMS) nadir görülen, çok sayıda gen mutasyonuna bağlı
oluşabilen, nöromuskuler transmisyon disfonksiyonu ile karakterize klinik ve
genetik açıdan heterojen bir hastalıktır. Bilateral pitoz, her yöne bakış
kısıtlılığı, yutma güçlüğü ve tüm ekstremitelerde proksimal hakim güçsüzlük
şikayetleri olan 45 yaşında kadın hasta sunuldu. Öyküsünde 2 yaşından beri olan
yürüme güçlüğü, ayağa kalkmakta zorlanma ve çabuk yorulma olduğu öğrenildi.
Oniki yaşından beri miyastenia gravis tanısıyla takip edilen hastanın
antikorları negatif ve toraks tomografisi normaldi. Repetetif stimulasyonda 3
Hz uyarımla dekrement yanıt elde edildi. Ataklarda immunmodulatuar tedavilere
yanıt alınamadı. Kas biopsisinde ise nöromuskuler kavşak hastalığı ile uyumlu
kas atrofisi gözlendi. Takibimizde mestinon tedavisi almakta olan hastanın
şikayetlerinde kısmi bir düzelme saptandı. KMS’de genotip ve semptomlar spesifik
değildir ve geniş bir spektruma sahiptir. İmmunmodulatuar tedavilere yanıtsız
olgularda  ayrıntılı anamnez ve kas
biopsisi ile tanının akılda tutulması vurgulanmak amaçlandı.







Kaynakça

  • Referans1 Engel AG, Shen XM, Selcen D, Sine SM. Congenital myasthenic syndromes: pathogenesis, diagnosis, and treatment. Lancet Neurol 2015;14:420–34.
  • Referans2 Schara U, Della Marina A, Abicht A. Congenital myasthenic syndromes:current diagnostic and therapeutic approaches. Neuropediatrics 2012;43(4);184-193.
  • Referans3 Jagtap SA, Abraham K, Sarada C and Nair MD. Congenital myasthenic syndromes: Natural history and long-term prognosis. Ann Indian Acad Neurol 2013;16(3):338–341.
  • Referans4 Mülayim S, Uludağ B, Karasoy H. Konjenital miyastenik sendromlarda elektrofizyolojik özellikler. Ege Tıp Dergisi / Ege Journal of Medicine 2008;47(1):15-19.
  • Referans5 Webster R, Liu WW, Chaouch A, Lochmuller H, Beeson D. Fast-channel congenital myasthenic syndrome with a novel acetylcholine receptor mutation at the a–e subunit interface. Neuromuscular Disorders 2014;24(2):143–147.
  • Referans6 Gallenmüller C, Muller-Felber W, Dusl M, Stucka R, Guergueltcheva V, Blaschek A et al. Salbutamol-responsive limb-girdle congenital myasthenic syndrome due to a novel missense mutation and heteroallelic deletion in MUSK. Neuromuscular Disorders 2014;24(1):31–35.
  • Referans7 Nizamani NB, Talpur KI, Memon MN. Congenital Myasthenia Gravis. Journal of the College of Physicians and Surgeons Pakistan 2013;23(7): 517-518.
  • Referans8 Hantai D, Nicolea S, Eymar B. Congenital myasthenic syndromes: an update. Curr Opin Neurol 2013;26(1):561–568.
  • Referans9 Finlayson S, Beeson D, Palace J. Congenital myasthenic syndromes: an update. Pract Neurol 2013;13(2):80–91.
  • Referans10 Cruza PMR, Palacea J, Beesona D. Congenital myasthenic syndromes and the neuromuscular junction. Curr Opin Neurol 2014;27(5):566–575.
  • Referans11 Guo Y, Menezes MJ, Menezes MP, Liang J, Li D, Riley LG et al. Delayed diagnosis of congenital myasthenia due to associated mitochondrial enzyme defect. Neuromuscul Disord 2015;25(3):257-61.
Toplam 11 adet kaynakça vardır.

Ayrıntılar

Bölüm Makaleler
Yazarlar

Yıldız Arslan Bu kişi benim

Figen Tokuçoğlu Bu kişi benim

Aydın Kaya Bu kişi benim

Gülden Deniz Ünlü Bu kişi benim

Yaşar Zorlu Bu kişi benim

Yayımlanma Tarihi 21 Ekim 2016
Gönderilme Tarihi 3 Haziran 2015
Yayımlandığı Sayı Yıl 2016 Cilt: 30 Sayı: 2

Kaynak Göster

Vancouver Arslan Y, Tokuçoğlu F, Kaya A, Ünlü GD, Zorlu Y. Geç tanı konjenital miyastenik sendrom. DEU Tıp Derg. 2016;30(2):85-8.