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Metoda za določanje vplivov nanodelcev (TiO2) na celice in tkiva v strupenostnem testu in vivo = Assessing the effects of nanoparticles (TiO2) on cells and tissues by the in vivo toxicity testDrobne, Damjana ...Vsaka nova tehnologija prinaša mnoga tveganja. Z naraščanjem prisotnosti nanomaterialov v komercialnih proizvodih je nujno potrebno ovrednotiti ceno okolja in negativnih vplivov na organizme, pač ... glede na prednosti, ki jih prinašajo nanomateriali. Informacije o varnosti in možnem tveganju zaradi prisotnosti nanodelcev so nujno potrebne. Do danes je bilo narejenih le malo toksikoloških študij glede vpliva nanomaterialov. Proizvodnja, kjer so prisotni tudi nanomateriali, se razvija brez regulative na področju varnosti. V naši raziskavi smo uporabili že obstoječi test za kovine in pesticide s kopenskimi raki enakonožci Porcellio scaber (Isopoda, Crustacea), ki smo ga priredili za nanodelce. Kopenski raki so primerni testni organizmi, saj lahko analiziramo biooznačevalce na različnih ravneh. Rod Porcellio je prilagojen nakopensko življenje in živi tudi v Sloveniji. Hrani se predvsem z odmrlim listjem, lubjem in lesom. V tej študiji smo analizirali le en biooznačevalec, ki je povezan z integriteto celične membrane. Uporabili smo uveljavljeni test z dvojnim fluorescentnim barvanjem (barvanje z akridin oranžnim (N,N,N',N'-tetrametilakridin-3,6-diamin) in etidijevim bromidom (3,8-diamino-5-etil-6-fenilfenantridinijev bromid)). Značilnosti testiranih nanodelcev smo določali z visokoločljivostnim presevnim elektronskim mikroskopom (TEM). Ugotavljali smo učinke nanodelcev s pomočjo prehranjevalnega testa in ugotovili, da nanodelci vplivajo na integriteto membrane. Iz tega lahko sklepamo, da so tovrstni testi primerni tudi kot izhodišče za testiranje učinkov nanodelcev nadaljnje raziskave. Nova spoznanjana področju medsebojnega vplivanja med nanodelci in biološkimi sistemi bodo pokazala, kakšni naj bodo učinkoviti testi strupenosti za nanodelce.Source: Zdravstveno varstvo : Slovenian journal of public health. - ISSN 0351-0026 (Letn. 46, št. 3, 2007, str. 96-102)Type of material - article, component part ; adult, seriousPublish date - 2007Language - slovenianCOBISS.SI-ID - 1843429
Author
Drobne, Damjana |
Pipan Tkalec, Živa |
Lešer, Vladka |
Valant, Janez, 1979- |
Gunde-Cimerman, Nina |
Remškar, Maja, 1960-
Topics
tittanov oksid |
nanodelci |
biooznačevalci |
mikroskopija |
titanium dioxide |
nanoparticles |
biomarkers |
microscopy
source: Zdravstveno varstvo : Slovenian journal of public health. - ISSN 0351-0026 (Letn. 46, št. 3, 2007, str. 96-102)
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Drobne, Damjana | 11155 |
Pipan Tkalec, Živa | 26053 |
Lešer, Vladka | 24292 |
Valant, Janez, 1979- | 27543 |
Gunde-Cimerman, Nina | 05935 |
Remškar, Maja, 1960- | 07560 |
Source: Personal bibliographies
and: SICRIS
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