"Novel models, end points, and biomarkers" summarizes research on the effects of endocrine disruptors on steroid-metabolizing enzymes and gives new data on alkylphenols as endocrine disruptors.
However, even in this case there is considerably greater homogeneity of end point and method than occurs with respect to the hormesis database that is not restricted by biological model, end point, chemical class, and experimental methods.
To facilitate the modelling of the postnatal period, we assumed that women who were not depressed six weeks postnatally remained so until the model end point.
Therefore, the primary risk model end point was grade ≥2 HFSR as defined by the NCIC CTC over the first 8 weeks of therapy.
The SA itself is constrained to be small only at the model end points, but, because we impose the third time derivative to be small at any time, this affects the whole model span.
Model end points were persistent normal AER (all AER <40 mg/24 h); incident microalbuminuria without further progression to macroalbuminuria (40 mg/24 h ≤ AER <300 mg/24 h); and incident macroalbuminuria (AER ≥300 mg/24 h).
Thousands of studies have been published over the past several decades on hormesis and show it to be reproducible, generalized, and independent of biological model, agent, end point, and mechanism.
On a broader note, the need to quantify absolute chemical or particle deposition in in vitro model systems is of increasing importance to scientists and regulators for consistent interpretation of disease model end-points versus a defined biologically effective dose [12, 13].
Furthermore, these results point to the need for caution in choosing a suitable end point and animal model when seeking to test the estrogenic effects of xenobiotics.
Therefore, we used random-effects modeling, made OS as the only end point and used sensitivity analyses (RT, CT, CRT, node status, margins status, AJCC stage, and multiple country analysis) to address this.
