There is growing concern about the biologic effects stemming from steroids in impacted waterways. In aquatic systems, interaction between steroids and sediment influence both contaminant fate as well as subsequent bioavailability to aquatic organisms. The focus of this dissertation research was to gain a better understanding of steroid behavior in aquatic systems based on the physiochemical pro...

This article reviews our knowledge of crustacean vitellogenin and its role in vitellogenesis. Besides the biochemical and immunological aspects, particular attention has been given to hormonal control of the synthesis of this yolk precursor. Some examples from insects, amphibians and birds are compared.

This paper describes the purification of yolk proteins, which are important for the reproduction of egg-laying animals, and the structural characterization of two vitellogenins, VT1 and OTI-VIT-6, of the nematode Oscheius tipulae. O. tipulae is an alternative model organism to its relative, the widely used Caenorhabditis elegans, and is a good model to understand reproduction in insect parasiti...

s presented at scientific conferences: Hungarian abstracts: MAJER-BARANYI, K., ADÁNYI, N., CSUTORÁS, CS., KISS, A. (2007) Fűszerek aflatoxin B1 tartalmának vizsgálata immunoszenzorral. Magyar Kémikusok Egyesülete Centenáriumi vegyészkonferencia – Sopron, 2007. május 29-junius.1. poszter A-P24. MAJER-BARANYI, K., CSUTORÁS, CS., KISS, A., ADÁNYI, N. (2007) Élelmiszerek aflatoxin szennyezettségéne...

gene expression in juvenile rainbow trout. Short title: Effects of 4-n-nonylphenol and tamoxifen on gene expression in trout. Summary Alkylphenols such as nonylphenol (NP) are one of a wide variety of environmental chemicals reported to have estrogenic effects in both in vitro and in vivo studies. Induction of hepatic vitellogenin (Vg) gene expression is widely used as a biomarker for xenoestro...

BACKGROUND ICI 182,780 (ICI) belongs to a new class of antiestrogens developed to be pure estrogen antagonists and, in addition to its therapeutic use, it has been used to knock-out estrogen and estrogen receptor (ER) actions in several mammalian species. In the present study, the effects and mechanism of action of ICI were investigated in the teleost fish, sea bream (Sparus auratus). METHODS...