. "Vliv propylparabenu na produkci vitellogeninu u juveniln\u00EDho dania pruhovan\u00E9ho (Danio rerio)"@cs . "RIV/60076658:12610/07:00007944!RIV08-MSM-12610___" . "Preservatives; parabens; xenoestrogens; vitellogenesis; fish"@en . "The aim of the presented study was to investigate xenoestrogenic potential of propylparaben, which is commonly used in many industries as a preservative. Juvenile zebrafish (aged 20 days post hatching) were exposed for 20 days to three different batches of feed containing 500, 1000 and 2000 mg/kg of the commonly used preservative propylparaben (PP), respectively. After the exposure, the zebrafish were killed and the concentrations of the estrogen-dependent protein vitellogenin in their whole-body homogenates were measured by ELISA. The results obtained were compared with vitellogenin concentrations in control fish that received feed with no added propylparaben during the test and in fish from the positive control group receiving a diet containing 20 mg/kg natural estrogen, 17\u03B2-estradiol (E-2). The median vitellogenin concentrations in whole-body homogenates were 854 ng/ml (control group), 798, 829 and 810 ng/ml (fish exposed to 500; 1000 and 2000 mg/kg of PP respectively) and 1178 \u03BCg/ml (fis"@en . . "81" . "C\u00EDlem studie bylo zjistit xenoestrogenn\u00ED potenci\u00E1l propylparabenu (PP), kter\u00FD je hojn\u011B pou\u017E\u00EDv\u00E1n v pr\u016Fmyslu jako konzervant. Test byl proveden in vivo na daniu pruhovan\u00E9m (Danio rerio). Juveniln\u00ED dania pruhovan\u00E1 ve v\u011Bku 20 dn\u016F po vyl\u00EDhnut\u00ED byla b\u011Bhem testu (tj. po dobu 20 dn\u016F) exponov\u00E1na propylparabenem obsa\u017Een\u00FDm v krmivu v mno\u017Estv\u00ED 500, 1000 resp. 2000 mg/kg. Po ukon\u010Den\u00ED expozice byla dania utracena a v homogen\u00E1tech jejich t\u011Bl byly pomoc\u00ED ELISA metody zm\u011B\u0159eny koncentrace proteinu vitellogeninu, jeho\u017E synt\u00E9za v organismu je \u0159\u00EDzena n\u00E1sledkem (xeno)estrogenn\u00ED stimulace. D\u00E1le bylo provedeno m\u011B\u0159en\u00ED koncentrac\u00ED vitellogeninu v t\u011Blech kontroln\u00EDch ryb, kter\u00E9 b\u011Bhem testu p\u0159ij\u00EDmaly krmivo bez obsahu testovan\u00E9 l\u00E1tky a ryb ze skupiny pozitivn\u00ED kontroly, je\u017E p\u0159ij\u00EDmaly krmivo s obsahem 20 mg/kg p\u0159irozen\u00E9ho estrogenu 17\u03B2-estradiolu. Medi\u00E1ny koncentrac\u00ED vitellogeninu v jednotliv\u00FDch skupin\u00E1ch ryb byly n\u00E1sleduj\u00EDc\u00ED: 854 ng/ml u ryb z kontroln\u00ED skupiny, 798, 829 a 810 ng/ml u ryb p\u0159ij\u00EDmaj\u00EDc\u00EDch krmivo s obsahem 500," . "Praha, \u010Cesk\u00E1 republika" . "12610" . . "Dob\u0161\u00EDkov\u00E1, R." . "[9A6BAE2F2C41]" . "The influence of propylparaben on vitellogenin production in juvenile zebrafish (Danio rerio)"@en . "St\u00E1tn\u00ED zdravotn\u00ED \u00FAstav" . "458598" . "Z(MSM6007665809), Z(MSM6215712402)" . "Vliv propylparabenu na produkci vitellogeninu u juveniln\u00EDho dania pruhovan\u00E9ho (Danio rerio)" . . . . . "Svobodov\u00E1, Zde\u0148ka" . . . "The influence of propylparaben on vitellogenin production in juvenile zebrafish (Danio rerio)"@en . "1"^^ . "RIV/60076658:12610/07:00007944" . "1"^^ . "Vliv propylparabenu na produkci vitellogeninu u juveniln\u00EDho dania pruhovan\u00E9ho (Danio rerio)"@cs . . "3"^^ . . . . "Mikula, P." . "Vliv propylparabenu na produkci vitellogeninu u juveniln\u00EDho dania pruhovan\u00E9ho (Danio rerio)" . "978-80-7071-283-2" . . "C\u00EDlem studie bylo zjistit xenoestrogenn\u00ED potenci\u00E1l propylparabenu (PP), kter\u00FD je hojn\u011B pou\u017E\u00EDv\u00E1n v pr\u016Fmyslu jako konzervant. Test byl proveden in vivo na daniu pruhovan\u00E9m (Danio rerio). Juveniln\u00ED dania pruhovan\u00E1 ve v\u011Bku 20 dn\u016F po vyl\u00EDhnut\u00ED byla b\u011Bhem testu (tj. po dobu 20 dn\u016F) exponov\u00E1na propylparabenem obsa\u017Een\u00FDm v krmivu v mno\u017Estv\u00ED 500, 1000 resp. 2000 mg/kg. Po ukon\u010Den\u00ED expozice byla dania utracena a v homogen\u00E1tech jejich t\u011Bl byly pomoc\u00ED ELISA metody zm\u011B\u0159eny koncentrace proteinu vitellogeninu, jeho\u017E synt\u00E9za v organismu je \u0159\u00EDzena n\u00E1sledkem (xeno)estrogenn\u00ED stimulace. D\u00E1le bylo provedeno m\u011B\u0159en\u00ED koncentrac\u00ED vitellogeninu v t\u011Blech kontroln\u00EDch ryb, kter\u00E9 b\u011Bhem testu p\u0159ij\u00EDmaly krmivo bez obsahu testovan\u00E9 l\u00E1tky a ryb ze skupiny pozitivn\u00ED kontroly, je\u017E p\u0159ij\u00EDmaly krmivo s obsahem 20 mg/kg p\u0159irozen\u00E9ho estrogenu 17\u03B2-estradiolu. Medi\u00E1ny koncentrac\u00ED vitellogeninu v jednotliv\u00FDch skupin\u00E1ch ryb byly n\u00E1sleduj\u00EDc\u00ED: 854 ng/ml u ryb z kontroln\u00ED skupiny, 798, 829 a 810 ng/ml u ryb p\u0159ij\u00EDmaj\u00EDc\u00EDch krmivo s obsahem 500,"@cs . . . . "12. mezioborov\u00E1 \u010Desko-slovensk\u00E1 toxikologick\u00E1 konference" . .