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Serum α-synuclein and IL-1β are increased and correlated with measures of disease severity in children with epilepsy: potential prognostic biomarkers?

Authors
 Jieun Choi  ;  Soo Yeon Kim  ;  Hunmin Kim  ;  Byung Chan Lim  ;  Hee Hwang  ;  Jong Hee Chae  ;  Ki Joong Kim  ;  Sohee Oh  ;  Eun Young Kim  ;  Jeon-Soo Shin 
Citation
 BMC NEUROLOGY, Vol.20(1) : 85, 2020-03 
Journal Title
 BMC NEUROLOGY 
Issue Date
2020-03
MeSH
Adolescent ; Biomarkers / blood ; Child ; Cytokines / blood ; Encephalomyelitis, Acute Disseminated / immunology ; Epilepsy / physiopathology* ; Female ; Humans ; Interleukin-10 / blood ; Interleukin-1beta / blood* ; Male ; Multiple Sclerosis / immunology ; Neuromyelitis Optica / blood ; Prognosis ; Prospective Studies ; Tumor Necrosis Factor-alpha / blood ; alpha-Synuclein / blood*
Keywords
Acquired demyelinating disorders ; Children ; Epilepsy ; IL-1β ; α-Synuclein
Abstract
Background: The search for noninvasive biomarkers of neuroinflammation and neurodegeneration has focused on various neurological disorders, including epilepsy. We sought to determine whether α-synuclein and cytokines are correlated with the degree of neuroinflammation and/or neurodegeneration in children with epilepsy and with acquired demyelinating disorders of the central nervous system (CNS), as a prototype of autoimmune neuroinflammatory disorders. Methods: We analyzed serum and exosome levels of α-synuclein and serum proinflammatory and anti-inflammatory cytokines among 115 children with epilepsy and 10 acquired demyelinating disorders of the CNS and compared to 146 controls. Patients were enrolled prospectively and blood was obtained from patients within 48 h after acute afebrile seizure attacks or relapse of neurological symptoms. Acquired demyelinating disorders of the CNS include acute disseminated encephalomyelitis, multiple sclerosis, neuromyelitis optica spectrum disorders, and transverse myelitis. The controls were healthy age-matched children. The serum exosomes were extracted with ExoQuick exosome precipitation solution. Serum α-synuclein levels and serum levels of cytokines including IFN-β, IFN-γ, IL-1β, IL-6, IL-10 and TNF-α were measured using single and multiplex ELISA kits. Data were analyzed and compared with measures of disease severity, such as age at disease onset, duration of disease, and numbers of antiepileptic drug in use. Results: Serum α-synuclein levels were significantly increased in patients with epilepsy and acquired demyelinating disorders of the CNS compared to controls (both, p < 0.05) and showed correlation with measures of disease severity both in epilepsy (p < 0.05, r = 0.2132) and in acquired demyelinating disorders of the CNS (p < 0.05, r = 0.5892). Exosome α-synuclein showed a significant correlation with serum α-synuclein (p < 0.0001, r = 0.5915). Serum IL-1β levels were correlated only with the numbers of antiepileptic drug used in children with epilepsy (p < 0.001, r = 0.3428), suggesting drug resistant epilepsy. Conclusions: This is the first study in children demonstrating that serum α-synuclein levels were significantly increased in children with epilepsy and with acquired demyelinating disorders of the CNS and correlated with measures of disease severity. Serum IL-1β levels showed significant correlation only with drug resistance in children with epilepsy. Thus, these data support that serum levels of α-synuclein and IL-1β are potential prognostic biomarkers for disease severity in children with epilepsy. CNS, central nervous system.
DOI
10.1186/s12883-020-01662-y
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Microbiology (미생물학교실) > 1. Journal Papers
Yonsei Authors
Shin, Jeon Soo(신전수) ORCID logo https://orcid.org/0000-0002-8294-3234
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/179031
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