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Higher amount of MyHC IIX in a wrist flexor in tetraplegic compared to hemiplegic cerebral palsy
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden. (RISPA- MEP-RG)ORCID iD: 0000-0002-9831-0896
2008 (English)In: Journal of the Neurological Sciences, ISSN 0022-510X, E-ISSN 1878-5883, Vol. 266, no 1-2, p. 51-56Article in journal (Other academic) Published
Abstract [en]

Spastic cerebral palsy can be divided into diagnostic groups by the relative severity of the arm impairment. This study investigates if hemiplegic, tetraplegic or diplegic cerebral palsy (CP) results in different patterns of myosin heavy chain (MyHC) expression in the flexor carpi ulnaris muscle from 17 young patients with CP. Using enzyme-immunohistochemistry and gel electrophoresis techniques we found a higher percentage of fibers expressing fast MyHC IIx (52%) in tetraplegic CP compared to hemiplegic patients (32%), (p < 0.05). Tetraplegic CP also resulted in a lower amount of fibers expressing slow MyHC I (18%) compared to hemiplegic CP (40%), (p < 0.005). The proportion of muscle fibers containing fetal MyHC was higher in tetraplegic CP compared to other groups, (p < 0.005). Taken together theses results indicate that tetraplegic CP is associated with a shift from slow to fast myosins and that regenerative events are more prominent in tetraplegic CP compared with milder brain damage.

Place, publisher, year, edition, pages
2008. Vol. 266, no 1-2, p. 51-56
Keyword [en]
Adolescent, Cerebral Palsy/*metabolism, Child, Child; Preschool, Desmin/metabolism, Electrophoresis; Polyacrylamide Gel, Female, Hemiplegia/*metabolism, Humans, Immunohistochemistry, Male, Muscle Fibers/metabolism, Muscle; Skeletal/*metabolism, Myosin Type I/biosynthesis, Nonmuscle Myosin Type IIB/biosynthesis, Quadriplegia/*metabolism, Skeletal Muscle Myosins/biosynthesis/*metabolism, Wrist/*physiology
National Category
Medical and Health Sciences Physiology Social Sciences Interdisciplinary Sport and Fitness Sciences
Research subject
Sports Science
Identifiers
URN: urn:nbn:se:oru:diva-4755DOI: 10.1016/j.jns.2007.08.040PubMedID: 17916367OAI: oai:DiVA.org:oru-4755DiVA, id: diva2:139054
Available from: 2008-11-24 Created: 2008-11-24 Last updated: 2018-01-13Bibliographically approved

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Publisher's full textPubMedhttp://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Retrieve&list_uids=17916367&dopt=Citation

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Kadi, Fawzi

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