Interleukin-1β promotes the neurogenesis of carotid bodies by stimulating the activation of ERK1/2

Respiratory Physiology & Neurobiology
Fen XueBai-Ren Wang

Abstract

The carotid body (CB) is a complex sensory organ that functions to sense homeostatic O2 in the blood. Previous studies have shown that CBs express interleukin (IL)-1 receptor type I and that the chemosensitivity of CBs is increased following stimulation with pro-inflammatory cytokines. However, the effects of pro-inflammatory cytokines, such as IL-1β, on the neurogenesis of CB are unclear. Thus, in this study, we aimed to assess the effects of IL-1β and intermittent hypobaric hypoxia (IHH) plus IL-1β on the phosphorylation of extracellular signal-regulated kinase (ERK) 1/2, tyrosine hydroxylase (TH) and the expression of nestin, a well-established stem cell marker in the nervous system. The results showed that TH, nestin expression and ERK1/2 phosphorylation were increased in the rat CB following intraperitoneal injection of IL-1β. Moreover, IL-1β had additive effects on IHH. These results suggested that the plasticity of CB was increased following treatment with IL-1β and that ERK1/2 may be involved in neurogenic signaling in CBs.

References

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Citations

Mar 12, 2016·Behavioural Brain Research·Manuela MeirelesConceição Calhau
May 8, 2018·Evidence-based Complementary and Alternative Medicine : ECAM·Guangxin YuanPeige Du
Oct 7, 2020·International Journal of Molecular Sciences·Elena StoccoAndrea Porzionato

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