Myoclonic epilepsy with ragged-red fibers
Dernière mise à jour 20 Apr 2021
Respecte les directives éditoriales
- TéléchargerTélécharger
- Partager
- Language
- Discussion
- Version audio
- Ajouter aux sources préférées sur Google
Myoclonic epilepsy with ragged-red fibers (MERRF) is a disorder that affects many parts of the body, particularly the muscles and nervous system. In most cases, the signs and symptoms of this disorder appear during childhood or adolescence. The features of MERRF vary widely among affected individuals, even among members of the same family.
Description
Myoclonic epilepsy with ragged-red fibers (MERRF) is a disorder that affects many parts of the body, particularly the muscles and nervous system. In most cases, the signs and symptoms of this disorder appear during childhood or adolescence. The features of MERRF vary widely among affected individuals, even among members of the same family.
MERRF is characterised by muscle twitches (myoclonus), weakness (myopathy), and progressive stiffness (spasticity). When the muscle cells of affected individuals are stained and viewed under a microscope, these cells usually appear abnormal. These abnormal muscle cells are called ragged-red fibers. Other features of MERRF include recurrent seizures (epilepsy), difficulty coordinating movements (ataxia), a loss of sensation in the extremities (peripheral neuropathy), and slow deterioration of intellectual function (dementia). People with this condition may also develop hearing loss or optic atrophy, which is the degeneration (atrophy) of nerve cells that carry visual information from the eyes to the brain. Affected individuals sometimes have short stature and a form of heart disease known as cardiomyopathy. Less commonly, people with MERRF develop fatty tumours, called lipomas, just under the surface of the skin.
Inheritance patterns
The source lists the following possible inheritance patterns: mitochondrial. More than one pattern can apply in different cases.
Related genes
Other names
Fukuhara disease
MERRF
MERRF syndrome
Myoclonic epilepsy associated with ragged-red fibers
Myoencephalopathy ragged-red fiber disease
Related patient information and medicines
Patient information leaflet
Types de crises
A seizure is a short episode of symptoms caused by a burst of abnormal electrical activity in the brain. Typically, a seiz... There are various types of generalised seizure: Tonic-clonic seizures (which used to be called grand mal seizures) are the most common type of generalised seizure. They are more common in children than in adults. Myoclonic.
Patient information leaflet
Ordonnances gratuites ou à coût réduit
Certain people can get an exemption certific... Also, anyone needing regular prescriptions may save money by buying a Prescription Prepayment Certificate. Note : this leaflet only applies to England car prescriptions are free to all in Northern Ireland, Scotland and Wales. It also only gives a brief summary of free or reduced cost.
Patient information leaflet
Puis-je prendre de l'huile d'onagre et de la vitamine C ensemble ?
If you have any underlying health conditions or are taking prescribed medications (especially blood thinners or epilepsy medication), consult your pharmacist or doc... Important precautions Épilepsie or Schizophrenia Evening primrose oil may increase the risk of seizures, particularly in people with a history of épilepsie or those taking.
Patient information leaflet
Puis-je prendre l'Amlodipine et des suppléments de fibres ensemble ?
Taking fibre supplements at the same time as amlodipine may slightly lower the amount of medicine your body absorbs. U... Our Vérificateur d'Interactions Médicamenteuses helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do.
Patient information leaflet
Épilepsie
About 1 in 30 people in the UK develop epilepsy at some stage in their lives. However, epilepsy can begin at any age. What is epilepsy. Epilepsy is a long-lasting brain condition that causes people to have repeated seizures. It can cause different symptoms, from someone becoming unconscious and shaking, to someone behaving unusually for a short.
Patient information leaflet
Puis-je prendre des suppléments de fibres et Rybelsus ensemble ?
Taking fibre supplements at the same time as Rybelsus may prevent your body from absorbing the medication properly, making it less effective at controlling your blood sugar levels. Why this happens Rybelsus (semaglutide) is a very sensitive tablet that must be absorbed through the stomach lining. Fibre supplements can bulk up the stomach contents.
Lectures complémentaires et références
- Myoclonic epilepsy with ragged-red fibers; MedlinePlus, National Library of Medicine.
- Blakely EL, Trip SA, Swalwell H, He L, Wren DR, Rich P, Turnbull DM, Omer SE, Taylor RW. A new mitochondrial transfer RNAPro gene mutation associated with myoclonic epilepsy with ragged-red fibers and other neurological features. Arch Neurol. 2009 Mar;66(3):399-402. doi: 10.1001/archneurol.2008.576.
- Cardaioli E, Malfatti E, Da Pozzo P, Gallus GN, Carluccio MA, Rufa A, Volpi N, Dotti MT, Federico A. Progressive mitochondrial myopathy, deafness, and sporadic seizures associated with a novel mutation in the mitochondrial tRNASer(AGY) gene. J Neurol Sci. 2011 Apr 15;303(1-2):142-5. doi: 10.1016/j.jns.2010.12.020. Epub 2011 Jan 22.
- del Mar O'Callaghan M, Emperador S, Lopez-Gallardo E, Jou C, Bujan N, Montero R, Garcia-Cazorla A, Gonzaga D, Ferrer I, Briones P, Ruiz-Pesini E, Pineda M, Artuch R, Montoya J. New mitochondrial DNA mutations in tRNA associated with three severe encephalopamyopathic phenotypes: neonatal, infantile, and childhood onset. Neurogenetics. 2012 Aug;13(3):245-50. doi: 10.1007/s10048-012-0322-0. Epub 2012 May 26.
- Deschauer M, Muller T, Wieser T, Schulte-Mattler W, Kornhuber M, Zierz S. Hearing impairment is common in various phenotypes of the mitochondrial DNA A3243G mutation. Arch Neurol. 2001 Nov;58(11):1885-8. doi: 10.1001/archneur.58.11.1885.
- DiMauro S. Mitochondrial diseases. Biochim Biophys Acta. 2004 Jul 23;1658(1-2):80-8. doi: 10.1016/j.bbabio.2004.03.014.
- Mancuso M, Filosto M, Mootha VK, Rocchi A, Pistolesi S, Murri L, DiMauro S, Siciliano G. A novel mitochondrial tRNAPhe mutation causes MERRF syndrome. Neurology. 2004 Jun 8;62(11):2119-21. doi: 10.1212/01.wnl.0000127608.48406.f1.
- Mancuso M, Petrozzi L, Filosto M, Nesti C, Rocchi A, Choub A, Pistolesi S, Massetani R, Fontanini G, Siciliano G. MERRF syndrome without ragged-red fibers: the need for molecular diagnosis. Biochem Biophys Res Commun. 2007 Mar 23;354(4):1058-60. doi: 10.1016/j.bbrc.2007.01.099. Epub 2007 Jan 26.
- Melone MA, Tessa A, Petrini S, Lus G, Sampaolo S, di Fede G, Santorelli FM, Cotrufo R. Revelation of a new mitochondrial DNA mutation (G12147A) in a MELAS/MERFF phenotype. Arch Neurol. 2004 Feb;61(2):269-72. doi: 10.1001/archneur.61.2.269.
- Moraes CT, Ciacci F, Bonilla E, Jansen C, Hirano M, Rao N, Lovelace RE, Rowland LP, Schon EA, DiMauro S. Two novel pathogenic mitochondrial DNA mutations affecting organelle number and protein synthesis. Is the tRNA(Leu(UUR)) gene an etiologic hot spot? J Clin Invest. 1993 Dec;92(6):2906-15. doi: 10.1172/JCI116913.
- Nakamura M, Nakano S, Goto Y, Ozawa M, Nagahama Y, Fukuyama H, Akiguchi I, Kaji R, Kimura J. A novel point mutation in the mitochondrial tRNA(Ser(UCN)) gene detected in a family with MERRF/MELAS overlap syndrome. Biochem Biophys Res Commun. 1995 Sep 5;214(1):86-93. doi: 10.1006/bbrc.1995.2260.
- Pulkes T, Liolitsa D, Eunson LH, Rose M, Nelson IP, Rahman S, Poulton J, Marchington DR, Landon DN, Debono AG, Morgan-Hughes JA, Hanna MG. New phenotypic diversity associated with the mitochondrial tRNA(SerUCN) gene mutation. Neuromuscul Disord. 2005 May;15(5):364-71. doi: 10.1016/j.nmd.2005.01.006.
- Taylor RW, Schaefer AM, McDonnell MT, Petty RK, Thomas AM, Blakely EL, Hayes CM, McFarland R, Turnbull DM. Catastrophic presentation of mitochondrial disease due to a mutation in the tRNA(His) gene. Neurology. 2004 Apr 27;62(8):1420-3. doi: 10.1212/01.wnl.0000120667.77372.46.
- Teive HA, Munhoz RP, Muzzio JA, Scola RH, Kay CK, Raskin S, Werneck LC, Bruhn H. Cerebellar ataxia, myoclonus, cervical lipomas, and MERRF syndrome. Case report. Mov Disord. 2008 Jun 15;23(8):1191-2. doi: 10.1002/mds.21990. No abstract available.
- Tuppen HA, Naess K, Kennaway NG, Al-Dosary M, Lesko N, Yarham JW, Bruhn H, Wibom R, Nennesmo I, Weleber RG, Blakely EL, Taylor RW, McFarland R. Mutations in the mitochondrial tRNA Ser(AGY) gene are associated with deafness, retinal degeneration, myopathy and epilepsy. Eur J Hum Genet. 2012 Aug;20(8):897-904. doi: 10.1038/ejhg.2012.44. Epub 2012 Feb 29.
- Velez-Bartolomei F, Lee C, Enns G. MERRF. 2003 Jun 3 [updated 2021 Jan 7]. In: Adam MP, Bick S, Mirzaa GM, Wallace SE, Amemiya A, editors. GeneReviews(R) [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2026. Available from http://www.ncbi.nlm.nih.gov/books/NBK1520/
Participez à la conversation
Partagez vos pensées ou expériences avec les autres dans notre communautés de patients.
Demandez, partagez, connectez-vous.
Parcourez les discussions, posez des questions et partagez vos expériences sur des centaines de sujets de santé.
Inscrivez-vous à la newsletter Patient
Votre dose hebdomadaire de conseils de santé clairs et fiables - rédigés pour vous aider à vous sentir informé, confiant et maître de la situation.
En vous abonnant, vous acceptez notre Politique de confidentialité. Vous pouvez vous désabonner à tout moment. Nous ne vendons jamais vos données.