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001-es BibID:	BIBFORM004659
Első szerző:	Dzoljic, M.
Cím:	Ethanol and halothane differently modulate HLA class I and class II oligomerization : a new look at the mode of action of anesthetic agents through fluorescence spectroscopy / Dzoljic, M., Bene, L., Krasznai, Z., Damjanovich, S., Van Duijn, B.
Dátum:	2000
Megjegyzések:	The field of research considering the working mechanism of anesthetic agents is a complex one and the site or sites of action of general anesthetics are yet to be elucidated. Through the years, on the molecular level, the discussion has shifted from the lipid theories to the more specific interaction with the proteins responsible for the signal transduction. While this approach led to several models, they offer, at best, partial explanations for the observed phenomena. Anesthetic agents interact with many systems, of which the neuronal is best studied, leaving interaction with the immune defense system relatively unexplored. In this study we focus on the interaction of ethanol and halothane with the co-localization on the membrane of HLA I and II molecules. We show that ethanol tends to randomize the distribution of HLA I and II molecules, while halothane increases the clustering of HLA I proteins. The notion that anesthetics modulate cell function by disrupting clustering and thereby promoting a random distribution is a novel approach that may explain the general involvement of many systems during exposition to anesthetic drugs. In this study we show the disturbance of co-localization of molecules that may form a functional network. The relevance of this finding depends on the importance of these networks for extracellular and intracellular processes.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban Anesthetics, Inhalation Antibodies, Monoclonal B-Lymphocytes Cell Line chemistry Comparative Study drug effects Energy Transfer Ethanol Fluorescence Halothane Histocompatibility Antigens Class I Histocompatibility Antigens Class II Human Macromolecular Systems methods pharmacology Research Signal Transduction Spectrometry, Fluorescence Support, Non-U.S.Gov't
Megjelenés:	Journal of Photochemistry and Photobiology. B, Biology. - 56 : 1 (2000), p. 48-52. -
További szerzők:	Bene László (1963-) (biofizikus) Krasznai Zoltán (1950-) (biofizikus) Damjanovich Sándor (1936-2017) (biofizikus) Duijn, B., Van
Internet cím:	DOI elektronikus változat
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001-es BibID:	BIBFORM046276
Első szerző:	Krasznai Zoltán (biofizikus)
Cím:	Flow cytometric determination of absolute membrane potential of cells / Krasznai Z., Marian T., Balkay L., Emri M., Tron L.
Dátum:	1995
Megjegyzések:	Membrane potential measurements using fluorescent membrane potential indicator dyes report on relative changes but usually do not result in an absolute value of the measured parameter. The method developed in this paper is based on the assumption that the negatively charged bis-oxonol distributes across the cytoplasmic membrane according to the Nernst equation. It is further supposed that the fluorescence intensity measured from a given stained cell is a single-value function of the intracellular dye concentration. The protocol suggested incorporates the construction of a calibration curve (fluorescence intensity measured from stained cells vs. extracellular dye concentration). This allows the evaluation of the membrane potential in millivolts using fluorescence readings of the cells both in the depolarized state and in the state of interest. Good agreement was found between absolute membrane potential data of human peripheral blood lymphocytes by our method and results of parallel patch clamp measurements.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Journal of Photochemistry and Photobiology. B, Biology. - 28 : 1 (1995), p. 93-99. -
További szerzők:	Márián Teréz (1950-) (radiobiológus) Balkay László (1963-) (biofizikus) Emri Miklós (1962-) (fizikus) Trón Lajos (1941-) (biofizikus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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