Anti-Diethylstilbestrol polyclonal antibody

Trace concentration of EDs (endocrine disrupting compounds) in water bodies caused by wastewater treatment plant effluents is a recognized problem for the health of aquatic organisms and their potential to affect human health. In this paper we show that continuous exposure of male mice from early development to the adult life (140 days) to unrestricted drinking of wastewater collected from a municipal sewage treatment plant, is associated with an increased adipose deposition and weight gain during adulthood because of altered body homeostasis. In parallel, bisphenol A (BPA) at the administration dose of 5 mu g/kg/body weight, shows an increasing effect on total body weight and fat mass. In vitro, a solid phase extract (SPE) of the wastewater (eTW), caused stimulation of 3T3-L1 adipocyte differentiation at dilutions of 0.4 and 1 % in the final culture medium which contained a concentration of BPA of 40 nM and 90 nM respectively. Pure BPA also promoted adipocytes differentiation at the concentration of 50 and 80 mu M. BPA effect in 3T3-L1 cells was associated to the specific activation of the estrogen receptor alpha (ER alpha) in undifferentiated cells and the estrogen receptor beta (ER beta) in differentiated cells. BPA also activated the Peroxisome Proliferator Activated Receptor gamma (PPAR gamma) upregulating a minimal 3XPPARE luciferase reporter and the PPAR gamma-target promoter of the aP2 gene in adipose cells, while it was not effective in preadipocytes. The pure estrogen receptor agonist diethylstilbestrol (DES) played an opposite action to that of BPA inhibiting PPAR gamma activity in adipocytes, preventing cell differentiation, activating ERa in preadipocytes and inhibiting ER alpha and ER beta regulation in adipocytes. The results of this work show that the drinking of chemically-contaminated wastewater promotes fat deposition in male mice and that EDs present in sewage are likely responsible for this effect through a nuclear receptor mediated mechanism. (C) 2016 Elsevier Inc. All rights reserved.

In this work, Ru(bpy)(3)(2+) encapsulated in metal -organic frameworks (MOFs) UiO-67 (Ru(bpy)(3)(2+)/UiO-67) as luminophor was easily prepared and firstly applied in constructing an electrochemiluminescence (ECL) immunosensor to efficiently estimate diethylstilbestrol (DES). The competitive method-based ECL immunosensor platform was fabricated by amino-silicon dioxide which possesses large surface area. The poriness of UiO-67 was splendid so that Ru(bpy)(3)(2+) could be easily encapsulated. Ru(bpy)(3)(2+)/UiO-67 with excellent ECL luminescence signal existed large specific surface area for easily labeled with antibodies. DES competed with bovine serum albumin-diethylstilbestrol (BSA-DES) for binding to antibody-specific sites in the constructed immunosensor. However DES was micromolecule, which was easier to bond to antibodies than BSA-DES. The ECL signal was gradually decreases with the increase of the concentration of DES. Under optimal conditions, the proposed immunosensor exhibited a wide linear range from 0.01 pg mL(-1) to SO ng(-1) with a low detetion limit of 3.27 fg(-1) (S/N = 3). The novel fabricated immunosensor with interference immunity and high stability may cause an attractive approach for the other targets determination.