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001-es BibID:BIBFORM069841
Első szerző:Holló Krisztina (vegyész)
Cím:Interleukin-1 receptor type 1 is over-expressed in neurons but not in glial cells within the rat superficial spinal dorsal horn in complete Freund adjuvant induced inflammatory pain / Krisztina Holló, László Ducza, Zoltán Hegyi, Klaudia Dócs, Krisztina Hegedűs, Erzsébet Bakk, Ildikó Papp, Gréta Kis, Zoltán Mészár, Zsuzsanna Bardóczi, Miklós Antal
Dátum:2017
Megjegyzések:AbstractBackground: All known biological functions of the pro-inflammatory cytokine interleukin-1? (IL-1?) are mediatedby type 1 interleukin receptor (IL-1R1). IL-1??IL-1R1 signaling modulates various neuronal functions including spinalpain processing. Although the role of IL-1? in pain processing is generally accepted, there is a discussion in the literaturewhether IL-1? exerts its effect on spinal pain processing by activating neuronal or glial IL-1R1. To contributeto this debate, here we investigated the expression and cellular distribution of IL-1R1 in the superficial spinaldorsal horn in control animals and also in inflammatory pain.Methods: Experiments were performed on rats and wild type as well as IL-1R1-deficient mice. Inflammatorypain was evoked by unilateral intraplantar injection of complete Freund adjuvant (CFA). The nociceptiveresponsiveness of control and CFA-treated animals were tested daily for withdrawal responses to mechanicaland thermal stimuli before and after CFA injection. Changes in the expression of 48 selected genes/mRNAsand in the quantity of IL-1R1 protein during the first 3 days after CFA injection were measured with theTaqMan low-density array method and Western blot analysis, respectively. The cellular localization of IL-1R1protein was investigated with single and double staining immunocytochemical methods.Results: We found a six times and two times increase in IL-1R1 mRNA and protein levels, respectively, in thedorsal horn of CFA-injected animals 3 days after CFA injection, at the time of the summit of mechanical andthermal allodynia. Studying the cellular distribution of IL-1R1, we found an abundant expression of IL-1R1 onthe somatodendritic compartment of neurons and an enrichment of the receptor in the postsynaptic membranes ofsome excitatory synapses. In contrast to the robust neuronal localization, we observed only a moderate expression ofIL-1R1 on astrocytes and a negligible one on microglial cells. CFA injection into the hind paw caused a remarkableincrease in the expression of IL-1R1 in neurons, but did not alter the glial expression of the receptor.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
IL-1R1
Rodents
Inflammatory pain evoked by CFA injection
Immunohistochemistry
Superficial spinal dorsal horn
Megjelenés:Journal of Neuroinflammation. - 14 : 1 (2017), p. 1-18. -
További szerzők:Ducza László (1987-) (molekuláris biológus) Hegyi Zoltán (1983-) (molekuláris biológus) Dócs Klaudia Hegedűs Krisztina Bakk Erzsébet Papp Ildikó (1976-) (biológus) Kis Gréta (1979-) (környezetkutató) Mészár Zoltán Mihály (1977-) (agrármérnök) Bardóczi Zsuzsanna Antal Miklós (1951-) (orvos, anatómus)
Pályázati támogatás:KTIA_NAP_13-1-2013-0001
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