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001-es BibID:	BIBFORM078411
035-os BibID:	(PMID)30734834 (WoS)000472512500009 (Scopus)85061242629
Első szerző:	Baksa Brigitta (fogorvos)
Cím:	Characterization of functional subgroups among genetically identified cholinergic neurons in the pedunculopontine nucleus / Baksa B., Kovács A., Bayasgalan T., Szentesi P., Kőszeghy Á., Szücs P., Pál B.
Dátum:	2019
ISSN:	1420-682X
Megjegyzések:	The pedunculopontine nucleus (PPN) is a part of the reticular activating system which is composed of cholinergic, glutamatergic and GABAergic neurons. Early electrophysiological studies characterized and grouped PPN neurons based on certain functional properties (i.e. the presence or absence of the A-current, spike latency, and low threshold spikes). Although other electrophysiological characteristics of these neurons were also described (as high threshold membrane potential oscillations, great differences in spontaneous firing rate and the presence or absence of the M-current), systematic assessment of these properties and correlation of them with morphological markers are still missing. In this work, we conducted electrophysiological experiments on brain slices of genetically identified cholinergic neurons in the PPN. Electrophysiological properties were compared with rostrocaudal location of the neuronal soma and selected morphometric features obtained with post hoc reconstruction. We found that functional subgroups had different proportions in the rostral and caudal subregions of the nucleus. Neurons with A-current can be divided to early-firing and late-firing neurons, where the latter type was found exclusively in the caudal subregion. Similar to this, different parameters of high threshold membrane potential oscillations also showed characteristic rostrocaudal distribution. Furthermore, based on our data we propose that high threshold oscillations rather emerge from neuronal somata and not from the proximal dendrites. In summary, we demonstrated the existence and spatial distribution of functional subgroups of genetically identified PPN cholinergic neurons, which are in accordance with differences found in projection and in vivo functional findings of the subregions. Being aware of functional differences of PPN subregions will help the design and analysis of experiments using genetically encoded opto- and chemogenetic markers for in vivo experiments.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk pedunculopontine nucleus cholinergic neuron spike delay A-current rostrocaudal gradient high threshold oscillation
Megjelenés:	Cellular And Molecular Life Sciences. - 76 : 14 (2019), p. 2799-2815. -
További szerzők:	Kovács Adrienn (1989-) (molekuláris biológus) Bayasgalan, Tsogbadrakh (1983-) (Általános orvos) Szentesi Péter (1967-) (élettanász) Kőszeghy Áron (1983-) (Ph.D hallgató, élettanász) Szűcs Péter (1974-) (kutatóorvos) Pál Balázs (1975-) (élettanász)
Pályázati támogatás:	KTIA_13_NAP-A-I/10 Egyéb 2017-1.2.1-NKP-2017-00002 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM040253
035-os BibID:	PMID:17013562
Első szerző:	Pocsai Krisztina (élettanász)
Cím:	Melanoma cells exhibit strong intracellular TASK-3-specific immunopositivity in both tissue sections and cell culture / K. Pocsai, L. Kosztka, G. Bakondi, M. Gönczi, J. Fodor, B. Dienes, P. Szentesi, I. Kovács, R. Feniger-Barish, E. Kopf, D. Zharhary, G. Szűcs, L. Csernoch, Z. Rusznák
Dátum:	2006
ISSN:	1420-682X
Megjegyzések:	Amplification of the kcnk9 gene and overexpression of the encoded channel protein (TASK-3) seems to be involved in carcinogenesis. In the present work, TASK-3 expression of melanoma cells has been studied. For the investigation of TASK-3-specific immunolabelling, a monoclonal antibody has been developed and applied along with two, commercially available polyclonal antibodies targeting different epitopes of the channel protein. Both primary and metastatic melanoma cells proved to be TASK-3 positive, showing prominent intracellular TASK-3-specific labelling; mostly concentrating around or in the proximity of the nuclei. The immunoreaction was associated with the nuclear envelope, and with the processes of the cells and it was also present in the cell surface membrane. Specificity of the immunolabelling was confirmed by Western blot and transfection experiments. As TASK-3 immunopositivity of benign melanocytes could also be demonstrated, the presence or absence of TASK-3 channels cannot differentiate between malignant and non-malignant melanocytic tumours.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk egyetemen (Magyarországon) készült közlemény
Megjelenés:	Cellular and molecular life sciences : CMLS. - 63 : 19-20 (2006), p. 2364-2376. -
További szerzők:	Kosztka Lívia (1981-) (élettanász) Bakondi Gábor (1980-) (élettanász) Gönczi Mónika (1974-) (élettanász) Fodor János (1973-) (élettanász, biotechnológus) Dienes Beatrix (1972-) (élettanász, molekuláris biológus) Szentesi Péter (1967-) (élettanász) Kovács Ilona (1965-) (patológus) Feniger-Barish, R. Kopf, E. Zharhary, D. Szűcs Géza (1948-) (élettanász) Csernoch László (1961-) (élettanász) Rusznák Zoltán (1965-) (élettanász)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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