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2017 ; 7
(1
): 1179
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Therapeutic effects of anti-HMGB1 monoclonal antibody on pilocarpine-induced
status epilepticus in mice
#MMPMID28446773
Fu L
; Liu K
; Wake H
; Teshigawara K
; Yoshino T
; Takahashi H
; Mori S
; Nishibori M
Sci Rep
2017[Apr]; 7
(1
): 1179
PMID28446773
show ga
Inflammatory processes in brain tissue have been described in human epilepsy of
various etiologies and in experimental models of seizures. High mobility group
box-1 (HMGB1) is now recognized as representative of damage-associated molecular
patterns (DAMPs). In the present study, we focused on whether anti-HMGB1 antibody
treatment could relieve status epilepticus- triggered BBB breakdown and
inflammation response in addition to the seizure behavior itself. Pilocarpine and
methyl-scopolamine were used to establish the acute seizure model. Anti-HMGB1 mAb
showed inhibitory effects on leakage of the BBB, and on the HMGB1 translocation
induced by pilocarpine. The expression of inflammation-related factors, such as
MCP-1, CXCL-1, TLR-4, and IL-6 in hippocampus and cerebral cortex were
down-regulated by anti-HMGB1 mAb associated with the number of activated
astrocytes, microglial cells as well as the expression of IL-1?. Both hematoxylin
& eosin and TUNEL staining showed that the apoptotic cells could be reduced after
anti-HMGB1 mAb treatment. The onset and latency of Racine stage five were
significantly prolonged in the anti-HMGB1 mAb group. These results suggested that
anti-HMGB1 mAb prevented the BBB permeability, reduced HMGB1 translocation while
inhibiting the expression of inflammation-related factors, protected against
neural cell apoptosis and prolonged Racine stage 5 seizure onset and latency.