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1.

001-es BibID:BIBFORM003918
Első szerző:Bursch, Wilfried
Cím:Cell death and autophagy : cytokines, drugs, and nutritional factors / Wilfried Burscha, Anneliese Karwan, Miriam Mayer, Julia Dornetshuber, Ulrike Fröhwein, Rolf Schulte-Hermann, Barbara Fazi, Federica Di Sano, Lucia Piredda, Mauro Piacentini, Goran Petrovski, László Fésüs, Christopher Gerner
Dátum:2008
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Toxicology. - 254 : 3 (2008), p. 147-157. -
További szerzők:Karwan, Anneliese Mayer, Miriam Dornetshuber, Julia Fröhwein, Ulrike Schulte-Hermann, Rolf Fazi, Barbara Di Sano, Federica Piredda, Lucia Piacentini, Mauro Petrovski, Goran (1975-) (orvos) Fésüs László (1947-) (orvos biokémikus) Gerner, Christopher
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2.

001-es BibID:BIBFORM036662
Első szerző:Elmazar, Mohamed M. A.
Cím:Synergistic teratogenic effects induced by retinoids in mice by coadministration of a RARalpha- or RARgamma-selective agonist with a RXR-selective agonist / Elmazar M. M., Rühl R., Nau H.
Dátum:2001
ISSN:0041-008X
Megjegyzések:To study the interaction of retinoid-induced limb defects and cleft palate on day 11 of gestation, a RXR-selective agonist (AGN191701, an arylpropenyl-thiophene-carboxylic acid derivative, 20 mg/kg orally) was coadministered with a RARalpha-agonist (Am580, an arylcarboxamidobenzoic acid derivative, 5 mg/kg orally) to NMRI mice. AGN191701 was neither fetotoxic nor teratogenic at the dose used but potentiated Am580-induced limb defects and cleft palate and prevented Am580-induced fetal weight retardation. These results suggest that Am580-induced limb defects and probably cleft palate on day 11 of gestation may be mediated via RARalpha-RXR heterodimerization, particularly in the absence of toxicokinetic interactions. AGN191701 was also coadministered with a RARgamma-agonist (CD437, an adamantyl-hydroxyphenyl naphthoic acid derivative, 15 mg/kg orally) on days 8 and 11 of gestation to investigate which CD437-induced defects are mediated via RARgamma-RXR heterodimerization. On day 8 of gestation, AGN191701 potentiated CD437-induced embryolethality, exencephaly, spina bifida aperta, cleft palate, and tail defects, as well as visceral and skeletal defects, but not micrognathia. On day 11 of gestation, the incidence of CD437-induced cleft palate and limb defects was also potentiated when coadministered with the RXR agonist. These results suggest that synergistic teratogenic effects can be induced by coadministration of two receptor-selective retinoids, indicating the importance of RARalpha-RXR and RARgamma-RXR heterodimers in producing structural defects during organogenesis.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Toxicology And Applied Pharmacology. - 170 : 1 (2001), p. 2-9. -
További szerzők:Rühl, Ralph (1969-) (vegyész) Nau, Heinz
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3.

001-es BibID:BIBFORM036648
Első szerző:Fritzsche, Britta
Cím:CYP26A1-specific antagonist influence on embryonic implantation, gene expression and endogenous retinoid concentration in rats / Fritzsche Britta, Schuchardt Jan-Philipp, Schmidt Anja, Nau Heinz, Schweigert Florian J., Rühl Ralph
Dátum:2010
ISSN:0890-6238
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
külföldön készült közlemény
Megjelenés:Reproductive Toxicology. - 30 : 3 (2010), p. 446-451. -
További szerzők:Schuchardt, Jan-Philipp Schmidt, Anja Nau, Heinz Schweigert, Florian J. Rühl, Ralph (1969-) (vegyész)
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4.

001-es BibID:BIBFORM036663
Első szerző:Krätke, Renate
Cím:All- trans -retinoic acid and all- trans -retinoyl-beta-d -glucuronide alter the development of axolotl embryos ( Ambystoma mexicanum ) in vitro / Renate Krätke, Ralph Rühl, Frank Kirschbaum, Heinz Nau
Dátum:2000
ISSN:0340-5761
Megjegyzések:Retinoids are involved in several physiological processes and are used in the treatment of various skin disorders. Therapy with retinoids during pregnancy may induce severe embryotoxic effects like craniofacial and cardiovascular malformations in the developing embryo. We investigated the effects of all-trans-retinoic acid (ATRA) and all-trans-retinoyl-β-D-glucuronide (ATRAG) in an amphibian embryotoxicity assay with Ambystoma mexicanum (axolotl) as an alternative in vitro method. Embryos were exposed to various concentrations of ATRA or ATRAG for 48 h beginning with the blastula stage. Kinetic investigations in the embryonic tissue were performed during the exposure period. Both retinoids interfered with the development of the axolotl embryos. Dose-dependent effects observed included growth retardation, craniofacial and cardiovascular malformations, as well as neural tube defects. In the axolotl, ATRA induced slightly more pronounced embryotoxic effects than ATRAG. All-trans-retinal was shown to be a major endogenous retinoid in this species. Endogenous levels of all-trans-retinaldehyde were increased during exposure to both ATRA and ATRAG. The glucuronide, however, was only detected in small amounts after ATRAG exposure. The embryotoxic potential of ATRAG could be explained by deglucuronidation to ATRA.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Archives Of Toxicology. - 74 : 3 (2000), p. 173-180. -
További szerzők:Rühl, Ralph (1969-) (vegyész) Kirschbaum, Frank Nau, Heinz
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5.

001-es BibID:BIBFORM042927
035-os BibID:PMID:23466426
Első szerző:Palicz Zoltán (orvos)
Cím:In vivo application of a small molecular weight antifungal protein of Penicillium chrysogenum (PAF) / Zoltán Palicz, Ágnes Jenes, Tamás Gáll, Kornél Miszti-Blasius, Sándor Kollár, Ilona Kovács, Miklós Emri, Teréz Márián, Éva Leiter, István Pócsi, Éva Csősz, Gergő Kalló, Csaba Hegedűs, László Virág, László Csernoch, Péter Szentesi
Dátum:2013
ISSN:0041-008X
Megjegyzések:The antifungal protein of Penicillium chrysogenum (PAF) inhibits the growth of important pathogenic filamentous fungi, including members of the Aspergillus family and some dermatophytes. Furthermore, PAF was proven to have no toxic effects on mammalian cells in vitro. To prove that PAF could be safely used in therapy, experiments were carried out to investigate its in vivo effects. Adult mice were inoculated with PAF intranasally in different concentrations, up to 2700g·kg(-1) daily, for 2weeks. Even at the highest concentration - a concentration highly toxic in vitro for all affected molds - used, animals neither died due to the treatment nor were any side effects observed. Histological examinations did not find pathological reactions in the liver, in the kidney, and in the lungs. Mass spectrometry confirmed that a measurable amount of PAF was accumulated in the lungs after the treatment. Lung tissue extracts from PAF treated mice exerted significant antifungal activity. Small-animal positron emission tomography revealed that neither the application of physiological saline nor that of PAF induced any inflammation while the positive control lipopolysaccharide did. The effect of the drug on the skin was examined in an irritative dermatitis model where the change in the thickness of the ears following PAF application was found to be the same as in control and significantly less than when treated with phorbol-12-myristate-13-acetate used as positive control. Since no toxic effects of PAF were found in intranasal application, our result is the first step for introducing PAF as potential antifungal drug in therapy.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Molekuláris Medicina
Megjelenés:Toxicology and Applied Pharmacology 269 : 1 (2013), p. 8-16. -
További szerzők:Jenes Ágnes (1980-) (élettanász) Gáll Tamás (1982-) (molekuláris biológus, mikrobiológus) Miszti-Blasius Kornél (1977-) (laboratóriumi szakorvos) Kollár Sándor (1949-) (sebész) Kovács Ilona (1965-) (patológus) Emri Miklós (1962-) (fizikus) Márián Teréz (1950-) (radiobiológus) Leiter Éva (1976-) (biológus) Pócsi István (1961-) (vegyész) Csősz Éva (1977-) (biokémikus, molekuláris biológus) Kalló Gergő (1989-) (molekuláris biológus) Hegedűs Csaba (1980-) (biokémikus, molekuláris biológus) Virág László (1965-) (biokémikus, sejtbiológus, farmakológus) Csernoch László (1961-) (élettanász) Szentesi Péter (1967-) (élettanász)
Pályázati támogatás:TÁMOP-4.2.1/B-09/1/KONV-2010-0007
TÁMOP
Oxidatív stressz és ADP-riboziláció kapcsolatának vizsgálata
TÁMOP-4.2.2/B-10/1-2010-0024
TÁMOP
Molekuláris Orvostudomány Doktori Iskola
TÁMOP-4.2.2.A-11/1/KONV-2012-0025
TÁMOP
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6.

001-es BibID:BIBFORM036658
Első szerző:Rühl, Ralph (vegyész)
Cím:Effects of all-trans-retinoic acid and all-trans-retinoyl glucuronide in two in vitro systems of distinct biological complexity / Ruhl Ralph, Sass Jörn, Nau Heinz, Klug Stephan
Dátum:2001
ISSN:0340-5761
Megjegyzések:In vitro systems are widely used to evaluate the embryotoxic potential of retinoids. The effective concentrations of these retinoids, however, are not consistent in the various in vitro systems used in evaluating embryotoxicity. This may be explained by the different level of complexity for each individual system, which may lead to different concentrations of the substances in the target tissues. To verify this hypothesis we have compared two in vitro systems of distinct biological complexity: the rat whole embryo culture system, and the mouse limb bud organ culture system. The lipid soluble, teratogenic retinoid all-trans-retinoic acid (ATRA), and all-trans-retinoyl-beta-D-glucuronide (ATRAG), an endogenous, water-soluble and biologically active retinoid with limited placental transfer, were compared with regard to their embryotoxic potential in vitro. In both in vitro systems, ATRAG showed a lower degree of embryotoxicity than ATRA. In the limb bud organ culture, ATRAG revealed only slightly less toxicity than ATRA, whereas the effective concentrations of the two compounds in the whole embryo culture system differed by almost two orders of magnitude. During incubation with ATRAG, ATRA is generated by hydrolysis and is found in culture media and exposed tissues. The presence of membrane barriers around the developing embryo in the whole embryo culture system possibly prevents the transfer of ATRAG to the embryo and, therefore, its exposure to the active hydrolysis product ATRA. From these results we conclude that analysis of retinoid concentrations in the culture media and in the exposed tissues is essential for the interpretation of results obtained from in vitro toxicity testing.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:Archives Of Toxicology. - 75 : 8 (2001), p. 497-504. -
További szerzők:Sass, Jörn Nau, Heinz Klug, Stephan
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