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001-es BibID:BIBFORM109585
035-os BibID:(cikkazonosító)1115685 (Scopus)85150718609 (WoS)000951373400001
Első szerző:Ducza László (molekuláris biológus)
Cím:Neuronal P2X4 receptor may contribute to peripheral inflammatory pain in rat spinal dorsal horn / Ducza László, Gajtkó Andrea, Hegedűs Krisztina, Bakk Erzsébet, Kis Gréta, Gaál Botond, Takács Roland, Szücs Péter, Matesz Klára, Holló Krisztina
Dátum:2023
ISSN:1662-5099
Megjegyzések:Objective: Intense inflammation may result in pain, which manifests as spinal central sensitization. There is growing evidence that purinergic signaling plays a pivotal role in the orchestration of pain processing. Over the last decade the ionotropic P2X purino receptor 4 (P2X4) got into spotlight in neuropathic disorders, however its precise spinal expression was scantily characterized during inflammatory pain. Thus, we intended to analyze the receptor distribution within spinal dorsal horn and lumbar dorsal root ganglia (DRG) of rats suffering in inflammatory pain induced by complete Freund adjuvant (CFA). Methods: CFA-induced peripheral inflammation was validated by mechanical and thermal behavioral tests. In order to ensure about the putative alteration of spinal P2X4 receptor gene expression qPCR reactions were designed, followed by immunoperoxidase and Western blot experiments to assess changes at a protein level. Colocalization of P2X4 with neuronal and glial markers was investigated by double immunofluorescent labelings, which were subsequently analyzed with IMARIS software. Transmission electronmicroscopy was applied to study the ultrastructural localization of the receptor. Concurrently, in lumbar DRG cells similar methodology has been carried out to complete our observations. Results: The figures of mechanical and thermal behavioral tests proved the establishment of CFA-induced inflammatory pain. We observed significant enhancement of P2X4 transcript level within the spinal dorsal horn 3?days upon CFA administration. Elevation of P2X4 immunoreactivity within Rexed lamina I-II of the spinal gray matter was synchronous with mRNA expression, and confirmed by protein blotting. According to IMARIS analysis the robust protein increase was mainly detected on primary afferent axonterminals and GFAP-labelled astrocyte membrane compartments, but not on postsynaptic dendrites was also validated ultrastructurally within the spinal dorsal horn. Furthermore, lumbar DRG analysis demonstrated that peptidergic and non-peptidergic nociceptive subsets of ganglia cells were also abundantly positive for P2X4 receptor in CFA model. Conclusion: Here we provide novel evidence about involvement of neuronal and glial P2X4 receptor in the establishment of inflammatory pain.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
inflammatory pain
spinal dorsal horn
P2X4 receptor
central sensitization
primary afferents
glial cells
dorsal root ganglia
Megjelenés:Frontiers in Molecular Neuroscience. - 16 (2023), p. 1-16. -
További szerzők:Gajtkó Andrea (1989-) (molekuláris biológus) Hegedűs Krisztina Bakk Erzsébet Kis Gréta (1979-) (molekuláris biológus) Gaál Botond Ágoston (1982-) (anatómus, neurobiológus) Takács Roland Ádám (1985-) (molekuláris biológus, biokémikus) Szűcs Péter (1974-) (kutatóorvos) Matesz Klára (1949-) (anatómus, neurobiológus) Holló Krisztina (1967-) (vegyész)
Pályázati támogatás:KTIA_NAP_13-2-2014-0005
Egyéb
2017-1.2.1-NKP-2017-00002
Egyéb
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2.

001-es BibID:BIBFORM052624
Első szerző:Gaál Botond Ágoston (anatómus, neurobiológus)
Cím:Distribution of extracellular matrix macromolecules in the vestibular nuclei and cerebellum of the frog, Rana esculenta / B. Gaál, É. Rácz, T. Juhász, K. Holló, C. Matesz
Dátum:2014
ISSN:0306-4522
Megjegyzések:The axons of transected and re-apposed vestibulocochlear nerve of the frog, in contrast to mammalian species, regenerate and establish functional contacts within their original termination areas of the vestibular nuclear complex and the cerebellum. The lack of regenerative capability of the mammalian central nervous system (CNS) is partially attributed to various extracellular matrix (ECM) molecules, such as chondroitin sulfate proteoglycans (CSPG) and tenascin-R (TN-R), which exert inhibition on axon regeneration. In contrast to these molecules, hyaluronan (HA) was reported to be permissive for CNS regeneration. Using histochemical and immunohistochemical methods, we investigated the distribution pattern of these molecules in the medial (MVN), lateral (LVN), superior and descending vestibular nuclei and the cerebellum of the frog and detected regional differences in the organization of the ECM. In the vestibular nuclear complex, pericellular condensation of the ECM, the perineuronal nets (PNNs) were recognizable in the LVN and MVN and were positive only for HA. The neuropil of the vestibular nuclei showed either a diffuse appearance with varying intensity of reactions, or dots and ring-like structures, which may represent the perinodal ECM of the vestibular fibers. In the cerebellum, indistinct PNNs that were only labeled for HA were present in the granular layer. Our findings suggest that the HA-rich, but CSPG and TN-R-free PNNs may be associated with the high degree of plasticity and regenerative potential of the amphibian vestibular system.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
perineuronal net
hyaluronan
chondroitin sulfate proteoglycan
tenascin-R
neural plasticity
brainstem
Doktori iskola
Megjelenés:Neuroscience. - 258 (2014), p. 162-173. -
További szerzők:Rácz Éva (1982-) (biológus) Juhász Tamás (1976-) (biológus, orvosbiológus) Holló Krisztina (1967-) (vegyész) Matesz Klára (1949-) (anatómus, neurobiológus)
Pályázati támogatás:MTA-TKI-11008
MTA
TÁMOP-4.2.2/B-10/1-2010-0024
TÁMOP
Fogorvostudományi Doktori Iskola
TÁMOP-4.2.4. A/2-11-1-2012-0001
TÁMOP
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
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