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001-es BibID:	BIBFORM001421
Első szerző:	Márián Teréz (radiobiológus)
Cím:	NA+/Ca2+ exchanger inhibitors modify the accumulation of tumor-diagnostic PET tracers in cancer cells / Márián T., Szabó-Péli J., Németh E., Trón L., Friedlander E., Szabó A., Balkay L., Veress G., Krasznai Z.
Dátum:	2007
Megjegyzések:	To establish the effects of Na(+)/Ca(2+) exchanger (NCX) blockers on 2-[(18)F]fluoro-2-deoxy-D-glucose ((18)FDG) and (11)C-choline accumulation in different cancer cells. METHODS: The tumor cells were incubated with NCX inhibitors, and the uptakes of (18)FDG and (11)C-choline were measured. Flow cytometric measurements of intracellular Ca(2+) and Na(+) concentrations were carried out. The presence of the NCX antigen in the cancer cells was proved by Western blotting, flow cytometry and confocal laser scanning microscopy. RESULTS: The NCX is expressed at a noteworthy level in the cytosol and on the cytoplasmic membrane of the examined cells. Incubation of the cells with three chemically unrelated NCX blockers (bepridil, KB-R7943 or 3',4'-dichlorobenzamil hydrochloride) resulted in an increase in the intracellular Ca(2+) concentration, with a simultaneous decrease in the intracellular Na(+) concentration. The treatment with the NCX inhibitors increased the energy consumption of the tumor cells by 50-100%. Thapsigargin abolished the NCX-induced (18)FDG accumulation in the cells. The NCX blockers applied decreased the (11)C-choline accumulation of all the investigated cancer cells by 60-80% relative to the control. CONCLUSION: A possible masking effect of NCX medication must be taken into consideration during the diagnostic interpretation of PET scans.
Tárgyszavak:	Orvostudományok Természettudományok Elméleti orvostudományok Biológiai tudományok Gyógyszerészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	European Journal of Pharmaceutical Sciences. - 30 : 1 (2007), p. 56-63. -
További szerzők:	Szabó-Péli Judit (1977-) (kutató) Németh Enikő (1977-) (vegyész) Trón Lajos (1941-) (biofizikus) Friedländer Elza (1980-) (biofizikus) Szabó Anna (1945-) (orvos) Balkay László (1963-) (biofizikus) Veress Gábor (1971-) (neurobiológus) Krasznai Zoltán (1950-) (biofizikus)
Internet cím:	elektronikus változat elektronikus változat DOI
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