Electrophysiological and histological changes of paraspinal muscles in adolescent idiopathic scoliosis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00064173%3A_____%2F16%3AN0000020" target="_blank" >RIV/00064173:_____/16:N0000020 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11130/16:10332485 RIV/00216208:11120/16:43911651 RIV/00064203:_____/16:10332485

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00586-016-4628-8" target="_blank" >http://dx.doi.org/10.1007/s00586-016-4628-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00586-016-4628-8" target="_blank" >10.1007/s00586-016-4628-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrophysiological and histological changes of paraspinal muscles in adolescent idiopathic scoliosis

Popis výsledku v původním jazyce

PURPOSE: The pathogenesis of adolescent idiopathic scoliosis (AIS) remains poorly understood. To date, potentially involved local changes in the deep paraspinal muscles still remain unknown. METHODS: Needle electromyography (EMG) and muscle biopsy of paraspinal muscles at convexity and concavity of the AIS main thoracic curve were performed in 25 subjects. In this group, EMG was performed in 16 AIS subjects (12 females, 12-27 years), muscle biopsy in 18 AIS subjects (15 females, 11-31 years) compared to 10 non-scoliotic controls (6 females, 12-55 years). Samples of muscle tissue were removed during corrective surgery and were examined histologically, enzyme histochemically and immunohistochemically. Both methods of EMG and muscle biopsy were performed in 9 subjects (7 women, 12-27 years). RESULTS: Right curve convexity was found in 24 AIS subjects. Amplitudes of motor unit action potentials (MUPs) were significantly increased on the AIS curve convexity versus concavity. Turns, duration and phases of MUPs were without any significant changes. In all 18 subjects, the histological examination revealed muscle fiber redistribution with numerical predominance of type I on the curve convexity which strongly correlated with the progression of the Cobb angle. CONCLUSION: Our findings demonstrate significant changes of muscle fiber redistribution in the paraspinal muscles of AIS with increased proportion of type I on the convexity corresponding to a significantly higher amplitude of MUPs on the same side. A possible explanation of this alteration is a secondary adaptation due to chronic high load demand.

Název v anglickém jazyce

Electrophysiological and histological changes of paraspinal muscles in adolescent idiopathic scoliosis

Popis výsledku anglicky

PURPOSE: The pathogenesis of adolescent idiopathic scoliosis (AIS) remains poorly understood. To date, potentially involved local changes in the deep paraspinal muscles still remain unknown. METHODS: Needle electromyography (EMG) and muscle biopsy of paraspinal muscles at convexity and concavity of the AIS main thoracic curve were performed in 25 subjects. In this group, EMG was performed in 16 AIS subjects (12 females, 12-27 years), muscle biopsy in 18 AIS subjects (15 females, 11-31 years) compared to 10 non-scoliotic controls (6 females, 12-55 years). Samples of muscle tissue were removed during corrective surgery and were examined histologically, enzyme histochemically and immunohistochemically. Both methods of EMG and muscle biopsy were performed in 9 subjects (7 women, 12-27 years). RESULTS: Right curve convexity was found in 24 AIS subjects. Amplitudes of motor unit action potentials (MUPs) were significantly increased on the AIS curve convexity versus concavity. Turns, duration and phases of MUPs were without any significant changes. In all 18 subjects, the histological examination revealed muscle fiber redistribution with numerical predominance of type I on the curve convexity which strongly correlated with the progression of the Cobb angle. CONCLUSION: Our findings demonstrate significant changes of muscle fiber redistribution in the paraspinal muscles of AIS with increased proportion of type I on the convexity corresponding to a significantly higher amplitude of MUPs on the same side. A possible explanation of this alteration is a secondary adaptation due to chronic high load demand.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

FH - Neurologie, neurochirurgie, neurovědy

OECD FORD obor

—

Projekt

<a href="/cs/project/NT13693" target="_blank" >NT13693: Morfologické, histochemické a elektrofyziologické změny svalů hrudní stěny u pacientů s idiopatickou skoliózou a jejich potenciální role v etiopatogenezi onemocnění.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Spine Journal

ISSN

0940-6719

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

3146-3153

Kód UT WoS článku

000385186100018

EID výsledku v databázi Scopus

2-s2.0-84973163849