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Peripheral Anti-inflammatory Cytokine Interleukin-10 Treatment Mitigates Interleukin-1β - Induced Anxiety And Sickness Behaviors in Adult Male Rats.

08:00 EDT 10th June 2019 | BioPortfolio

Summary of "Peripheral Anti-inflammatory Cytokine Interleukin-10 Treatment Mitigates Interleukin-1β - Induced Anxiety And Sickness Behaviors in Adult Male Rats."

Pro-inflammatory cytokines produce manifestations of sickness during inflammation, such as malaise and lethargy. They also contribute to effects of inflammation on mood. Anti-inflammatory cytokines counteract damage caused by inflammatory processes and can limit the severity of inflammation. However, very little is known about the role of anti-inflammatory cytokines in sickness and mood changes during immune activation. The purpose of this study was to determine if a prototypical anti-inflammatory cytokine, interleukin 10 (IL-10), can offset sickness behavior and anxiety caused by a pro-inflammatory cytokine, and whether IL-10 itself modifies anxiety. Rodent models of sickness display suppression of behavioral activity that may reflect lethargy or malaise, while models of anxiety display reduced exploration in several tasks. The effects of peripheral single dose of cytokines on open field exploration, social interaction and elevated plus maze (EPM) tests in adult male Sprague-Dawley rats were measured at 30 - 50 min post-treatment. The prototypical pro-inflammatory cytokine IL-1β (1 μg, i.p.) caused a decrease in locomotor activity indicative of sickness behavior, but disproportionately reduced central area exploration in the open field, open arm exploration in the EPM and lowered social interaction. IL-10 (1 μg, i.p.) had no effect on locomotor activity, but itself produced anxiety-like behavior in the open field and EPM. However, rats co-treated with both IL-10 and IL-1β showed locomotor activity, open field, social interaction and EPM behaviors very similar to control groups. This data demonstrate that IL-10 is capable of mitigating the sickness and anxiogenic effects caused by IL-1β, but that immune imbalance toward either a pro-inflammatory or an anti-inflammatory state can produce anxiety. This has importance for understanding the scope of immune changes that produce psychiatric symptoms, and provides preliminary indication that anti-inflammatory cytokines may be potentially useful in treatment of anxiety induced by inflammatory conditions.

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Journal Details

This article was published in the following journal.

Name: Behavioural brain research
ISSN: 1872-7549
Pages: 112024

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A cytokine subunit that is a component of both interleukin-12 and interleukin-23. It binds to the INTERLEUKIN-12 SUBUNIT P35 via a disulfide bond to form interleukin-12 and to INTERLEUKIN-23 SUBUNIT P19 to form interleukin-23.

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A subunit of interleukin-23. It combines with INTERLEUKIN-12 SUBUNIT P40, which is shared between the two cytokines, to form in the active interleukin-23 cytokine.

Cell surface receptors that are specific for INTERLEUKIN-5. They are heterodimeric proteins consisting of the INTERLEUKIN-5 RECEPTOR ALPHA SUBUNIT and the CYTOKINE RECEPTOR COMMON BETA SUBUNIT. Signaling from interleukin-5 receptors can occur through interaction of their cytoplasmic domains with SYNTENINS.

An interleukin receptor subunit that was originally discovered as a component of the INTERLEUKIN 2 RECEPTOR. It was subsequently found to be a component of several other receptors including the INTERLEUKIN 4 RECEPTOR, the INTERLEUKIN 7 RECEPTOR, the INTERLEUKIN-9 RECEPTOR, the INTERLEUKIN-15 RECEPTOR, and the INTERLEUKIN-21 RECEPTOR. Mutations in the gene for the interleukin common gamma chain have been associated with X-LINKED COMBINED IMMUNODEFICIENCY DISEASES.

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