Botulinum toxin injection changes resting state cerebellar connectivity in cervical dystonia
| Autor: | Petr Kaňovský, Pavel Otruba, Lenka Hvizdošová, Pavel Hok, Petr Hluštík, Markéta Trnečková, Zbyněk Tüdös, Martin Nevrlý, Michaela Kaiserová |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male 0301 basic medicine medicine.medical_specialty Cerebellum Frontal cortex Neurology Rest Science Botulinum toxin injection Injections Intralesional Severity of Illness Index Article 03 medical and health sciences Cognition 0302 clinical medicine Text mining medicine Humans Cervical dystonia Botulinum Toxins Type A Torticollis Cerebral Cortex Dystonia Multidisciplinary Resting state fMRI business.industry Middle Aged medicine.disease Magnetic Resonance Imaging Treatment Outcome 030104 developmental biology medicine.anatomical_structure nervous system Anesthesia Medicine Female business 030217 neurology & neurosurgery Neuroscience |
| Zdroj: | Scientific Reports, Vol 11, Iss 1, Pp 1-11 (2021) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | In cervical dystonia, functional MRI (fMRI) evidence indicates changes in several resting state networks, which revert in part following the botulinum neurotoxin A (BoNT) therapy. Recently, the involvement of the cerebellum in dystonia has gained attention. The aim of our study was to compare connectivity between cerebellar subdivisions and the rest of the brain before and after BoNT treatment. Seventeen patients with cervical dystonia indicated for treatment with BoNT were enrolled (14 female, aged 50.2 ± 8.5 years, range 38–63 years). Clinical and fMRI examinations were carried out before and 4 weeks after BoNT injection. Clinical severity was evaluated using TWSTRS. Functional MRI data were acquired on a 1.5 T scanner during 8 min rest. Seed-based functional connectivity analysis was performed using data extracted from atlas-defined cerebellar areas in both datasets. Clinical scores demonstrated satisfactory BoNT effect. After treatment, connectivity decreased between the vermis lobule VIIIa and the left dorsal mesial frontal cortex. Positive correlations between the connectivity differences and the clinical improvement were detected for the right lobule VI, right crus II, vermis VIIIb and the right lobule IX. Our data provide evidence for modulation of cerebello-cortical connectivity resulting from successful treatment by botulinum neurotoxin. |
| Databáze: | OpenAIRE |
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