Egy vegyület akkor tekinthető ösztrogén hatásúnak, ha alacsony affinitással is, de az ösztrogén receptorokhoz (ER) kötődni képes, az ösztrogén érzékeny sejtekben, szövetekben biológiai hatást képes kiváltani, melyek hasonlóak a petefészek eredetű ösztrogén hormonok által előidézett folyamatokhoz.
Irodalmi adatok alapján a hígtrágyával történő öntözés és intenzív állattartásból származó trágya termőföldre juttatása következtében a szteroid ösztrogének, beleértve az ösztron E1, ösztradiol E2, ösztriol E3, valamint a szintetikus ösztrogén EE2, mindenütt jelen vannak a termőtalajban. A növények felhalmozhatják az ösztrogéneket gyökereikben és hajtásaikban, bekerülve a táplálékláncba akár hatást fejthetnek ki a humán egészségre. A vegyületek ösztrogén potenciálját legtöbbször a 17β-ösztradiol referencia vegyülethez viszonyított relatív potenciálként fejezik ki. Meghatározó szerepe van a vegyületek minőségének, ugyanis az egyes ösztrogénhatású vegyületek különböző hatással lehetnek a receptorokra
Ahogy korábban említettük, hígtrágya csak talajtani szakvéleményre alapozott talajvédelmi hatósági engedély birtokában juttatható ki mezőgazdasági területre, melyben az is meghatározásra kerül, hogy a területre milyen mennyiségű hígtrágya helyezhető el. A különböző típusú hígtrágyák nemcsak tápanyag összetételben, hanem EDC tartalomban is különböznek egymástól. A természetes hormon kiválasztódás és a hormonhatású készítmények felhasználása tekintetében fontos az állatállomány ivararányát és korcsoportját figyelembe venni. A jövőre nézve fontos, hogy toxikológiai vizsgálatokat végezzünk, és nagyobb hangsúlyt fektessünk a mezőgazdasági melléktermékek által kijuttatott hormonhatású anyagok mennyiségére és lehetséges hatásaira.
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