Abstract
Increasing evidence corroborates the fundamental role of neuroinflammation in the development of epilepsy. Proinflammatory cytokines (PICs) are crucial contributors to the inflammatory reactions in the brain. It is evidenced that epileptic seizures are associated with elevated levels of PICs, particularly interleukin-1β (IL-1β), IL-6, and tumor necrosis factor-α (TNF-α), which underscores the impact of neuroinflammation and PICs on hyperexcitability of the brain and epileptogenesis. Since the pathophysiology of epilepsy is unknown, determining the possible roles of PICs in epileptogenesis could facilitate unraveling the pathophysiology of epilepsy. About one-third of epileptic patients are drug-resistant, and existing treatments only resolve symptoms and do not inhibit epileptogenesis; thus, treatment of epilepsy is still challenging. Accordingly, understanding the function of PICs in epilepsy could provide us with promising targets for the treatment of epilepsy, especially drug-resistant type. In this review, we outline the role of neuroinflammation and its primary mediators, including IL-1β, IL-1α, IL-6, IL-17, IL-18, TNF-α, and interferon-γ (IFN-γ) in the pathophysiology of epilepsy. Furthermore, we discuss the potential therapeutic targeting of PICs and cytokine receptors in the treatment of epilepsy.
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Abbreviations
- CNS:
-
Central nervous system
- BBB:
-
Blood–brain barrier
- PIC:
-
Proinflammatory cytokines
- AD:
-
Alzheimer’s disease
- PD:
-
Parkinson’s disease
- SLE:
-
Systemic lupus erythematosus
- TNF-α:
-
Tumor necrosis factor-α
- IL-1β:
-
Interleukin-1β
- TNFR1:
-
TNF receptor-1
- MS:
-
Multiple sclerosis
- APP:
-
Amyloid precursor protein
- Aβ:
-
β-Amyloid
- NF-кB:
-
Nuclear factor-кB
- TLR:
-
Toll-like receptor
- HMGB1:
-
High Mobility Group Box 1
- NMDA:
-
N-methyl-D-aspartate, NMDAR, N-methyl-D-aspartate receptor
- TLE:
-
Temporal lobe epilepsy
- KA:
-
Kainic acid
- PI3K/Akt/mTOR:
-
Phosphoinositide 3-kinase/Akt/mammalian target of rapamycin
- ROS:
-
Reactive oxygen species
- RNS:
-
Reactive nitrogen species
- TGF-β:
-
Transforming growth factor-β
- PGE2:
-
Prostaglandin E2
- IL-1R:
-
IL-1 family receptor
- Ig:
-
Immunoglobulin
- TIR:
-
Toll/IL-1 receptor
- IL-1RA:
-
IL-1 receptor antagonist
- ICV:
-
Intracerebroventricular
- N-Smase:
-
Neutral sphingomyelinase
- NO:
-
Nitric oxide
- SYN:
-
Synaptophysin
- LPS:
-
Lipopolysaccharide
- GABA:
-
Gamma-aminobutyric acid
- GAT-1:
-
GABA transporter type 1
- FIRES:
-
Febrile infection-related epilepsy syndrome
- ICE/caspase 1:
-
IL-1β converting enzyme
- IL-6R:
-
IL-6 receptor
- gp130:
-
130 KDa glycoprotein
- JAK/STAT:
-
Janus kinase/signal transducer and activator of transcription
- MAPK:
-
Mitogen-activated protein kinase
- mIL-6R:
-
Membrane-bound IL-6R
- sIL-6R:
-
Soluble IL-6R
- sgp130:
-
Soluble form of gp130
- XLE:
-
Extra-temporal lobe epilepsy
- ADAM:
-
A Disintegrin and Metalloproteinase
- tmTNF-α:
-
Transmembrane TNF-α
- TACE:
-
TNF-α converting enzyme
- sTNF-α:
-
Soluble TNF-α
- TRADD:
-
TNFR1-associated death domain
- TRAF:
-
TNF receptor-associated factor
- AMPAR:
-
α-Amino-3-hydroxy-5-methyl-4-isoxazole propionic acid receptors
- TRPV1:
-
Transient receptor potential vanilloid 1
- Sema7A:
-
Semaphoring7A
- HIF-1α:
-
Hypoxia-inducible factor subtype 1α
- IFN-γ:
-
Interferon-γ
- NK cells:
-
Natural killer cells
- APC:
-
Antigen-presenting cell
- IFN-γR:
-
Interferon-γ receptor
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Soltani Khaboushan, A., Yazdanpanah, N. & Rezaei, N. Neuroinflammation and Proinflammatory Cytokines in Epileptogenesis. Mol Neurobiol 59, 1724–1743 (2022). https://doi.org/10.1007/s12035-022-02725-6
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DOI: https://doi.org/10.1007/s12035-022-02725-6