Abstract:
OBJECTIVE:Interleukin-21 (IL-21) is a cytokine that is an important modulator of immune responses. However, its roles in epilepsy are not completely clear. Here, we investigated the expression and distribution of IL-21 in a kainic acid (KA)-induced acute seizure mouse model. MATERIALS AND METHODS:Mice (n = 146) were randomly divided into an age-matched group, PBS injection group, and a KA injection group. The KA-injected mice were evaluated at 1, 3, and 24 h post-injection. IL-21 mRNA and protein expression levels were measured using RT-PCR and western blotting. Immunohistochemistry and immunofluorescence staining were performed to further characterize the pattern and distribution of IL-21 expression. RESULTS:The IL-21 mRNA and protein expression levels in the hippocampal tissues of the KA-treated mice were significantly increased as early as 1 h compared with the age-matched mice and PBS-treated mice. After this time point, the expression was reduced, but it remained higher than the level in the PBS-treated mice (p < 0.01). Immunohistochemical staining showed that IL-21 expression was distributed throughout the hippocampus, including areas CA1 and CA3, the dentate gyrus and the hilus. Moreover, immunofluorescence further showed that in the hippocampi of the KA-treated mice, IL-21 was mainly expressed in GFAP-positive astrocytes rather than in NeuN-positive neurons or CD11b-positive microglia. SIGNIFICANCE:Our data suggest that an increase in astrocyte-derived IL-21 expression in hippocampal subregions following KA-induced seizures may have potent regulatory effects on epileptogenesis.
journal_name
Neurol Resjournal_title
Neurological researchauthors
Xiong XY,Wang TG,Yang MH,Meng ZY,Yang QW,Wang FXdoi
10.1080/01616412.2015.1135557subject
Has Abstractpub_date
2016-02-01 00:00:00pages
151-7issue
2eissn
0161-6412issn
1743-1328journal_volume
38pub_type
杂志文章abstract:OBJECTIVES:Disturbances in the hypothalamo-pituitary axis are supposed to modulate activity of multiple sclerosis (MS). We hypothesised that the extent of HYP damage may determine severity of MS and may be associated with the disease evolution. We suggested fatigue and depression may depend on the degree of damage of t...
journal_title:Neurological research
pub_type: 杂志文章
doi:10.1080/01616412.2016.1275460
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abstract::Acute blood-brain barrier (BBB) opening in cerebral ischemia is an often observed but seldom studied phenomenon. Increased permeability has been implicated with several consequences including exacerbating ischemic injury, leading to hemorrhagic transformation (HT) and also predictive of chronic damage and a way of del...
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journal_title:Neurological research
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doi:10.1179/016164110X12644252260510
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