Journals / Journal of Neurological Sciences (Turkish) / 2009 / Cilt: 26 - Sayı: 1

Disferlinopatide fenotipik varyasyonlar

Phenotypic variation in dysferlinopathy

Pages
106–111
Publication Date
2022-10-19
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

However her brother had difficulty only in foot dorsiflexion at the beginning of the symptoms.In conclusion, phenotypic variability, particularly at onset is one of the features of dysferlinopathies.

📌 3 Key Takeaways

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Objective & Hypothesis:Mutations in the dysferlin gene cause distinct phenotypes of muscular dystrophy known by the term “dysferlinopathy”.
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Key Findings & Data:Nowadays, four subtypes of dysferlinopathies have been established: limb-girdle muscular dystrophy 2B (LGMD 2B), Miyoshi myopathy (MM), distal anterior compartment type and scapuloperoneal type.We report a girl with dysferlinopathy with an unusual involvement of muscles in lower extremities and her brother whose symptoms started after the diagnosis of his sister.Both of them had lower limb weakness, marked elevation of serum creatine kinase (CK) levels and myopathic patterns in electromyography (EMG).
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Conclusion & Impact:However her brother had difficulty only in foot dorsiflexion at the beginning of the symptoms.In conclusion, phenotypic variability, particularly at onset is one of the features of dysferlinopathies.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Mutations in the dysferlin gene cause distinct phenotypes of muscular dystrophy known by the term “dysferlinopathy”. Nowadays, four subtypes of dysferlinopathies have been established: limb-girdle muscular dystrophy 2B (LGMD 2B), Miyoshi myopathy (MM), distal anterior compartment type and scapuloperoneal type.We report a girl with dysferlinopathy with an unusual involvement of muscles in lower extremities and her brother whose symptoms started after the diagnosis of his sister.Both of them had lower limb weakness, marked elevation of serum creatine kinase (CK) levels and myopathic patterns in electromyography (EMG). Muscle biopsy of the girl who was diagnosed as having dysferlinopathy disclosed dystrophic changes and an absence of dysferlin. She had both proximal and distal weakness of the lower limbs presented in a 5-year-period. However her brother had difficulty only in foot dorsiflexion at the beginning of the symptoms.In conclusion, phenotypic variability, particularly at onset is one of the features of dysferlinopathies. To recognize and distinguish them from polymyositis is important to protect the patients from unnecessary treatment modalities. Recent imaging studies indicate that the pattern of muscular involvement is essentially uniform when both symptomatic and presymptomatic involvement is considered.

Özet

Disferlin genindeki mutasyonlar, 'disferlinopati' adı altında bilinen musküler distrofide ayrı fenotipler olmasına sebep olmaktadır. Bugüne kadar, disferlinopatilerin dört alt tipi bildirilmiştir:limb-girdle musküler distrofi 2B (LGMD 2B), Miyoshi Miyopatisi (MM), distal anterior kompartman tipi ve skapuloperoneal tip. Biz, alt ekstremitelerinde alışılmadık kas tutulumu olan disferlinopatili bir kadın hasta ile semptomları onun tanı almasından sonra ortaya çıkan erkek kardeşini bildirmekteyiz. Her ikisinin de alt ekstremite güçsüzlüğü, serum kreatin kinaz (CK)seviyesinde belirgin yükseklik ve elektromiyografilerinde (EMG)miyopatik tutulum bulguları mevcuttu. Disferlinopati tanısı alan kadın hastanın kas biyopsisi, distrofik değişiklikleri ve disferlin yokluğunu göstermekteydi. Alt ekstremitelerinde, beş yıllık dönem içinde ortaya çıkan,hem proksimal hem de distal kas güçsüzlüğü vardı. Buna rağmen, erkek kardeşinde semptomların başlangıcında sadece ayak dorsifleksiyonunda zaaf bulunuyordu. Sonuç olarak, özellikle semptomların başlangıcında, fenotipik değişkenlik, disferlinopatilerin özelliklerinden biridir. Bunları farketmek ve polimiyozitten ayırmak, hastaları gereksiz tedavi yöntemlerinden korumak açısından önemlidir. Son zamanlardaki görüntüleme çalışmaları, semptomatik ve presemptomatik tutulum göz önüne alındığında, musküler tutulum paterninin aslında uzun dönemde benzer olduğunu göstermektedir.

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Cite This Article

CELIK, M., ERTASOGLU, H. (2022). Disferlinopatide fenotipik varyasyonlar. Journal of Neurological Sciences (Turkish), Cilt: 26 - Sayı: 1, 106–111. https://ajindex.com/articles/565501

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