https://boa.unimib.it/bitstream/10281/16136/2/sex%20ratio%20lancet%202000.pdf

Paternal concentrations of dioxin and sex ratio of offspring

Serum dioxin concentrations and endometriosis: A cohort study in Seveso, Italy

The Seveso accident: A look at 40 years of health research and beyond

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a widespread industrial environmental contaminant. Animal studies suggest that TCDD exposure alters the estrus cycle. Twenty years after a 1976 industrial explosion in Seveso, Italy, the authors interviewed female residents to determine whether there was an association between TCDD exposure and current menstrual cycle characteristics. The authors analyzed serum samples collected soon after the explosion to quantify individual TCDD levels. Among women who were premenarcheal at the time of the explosion, a 10-fold increase in serum TCDD level was associated with a lengthening of the menstrual cycle by 0.93 days (95% confidence interval (CI): -0.01, 1.86) and a reduction in the odds of scanty menstrual flow (adjusted odds ratio = 0.33, 95% CI: 0.10, 1.06). However, among women who were postmenarcheal at the time of the explosion, TCDD was not associated with menstrual cycle length (adjusted beta = -0.03 days, 95% CI: -0.61, 0.54) or scantiness of flow (adjusted odds ratio = 1.36, 95% CI: 0.70, 2.64). In both menarche groups, TCDD levels were associated with decreased odds of having irregular cycles (adjusted odds ratio = 0.46, 95% CI: 0.23, 0.95) but were not related to days of flow (adjusted beta = 0.16 days, 95% CI: -0.08, 0.41). These results are consistent with effects of TCDD on ovarian function noted in some animal species and with greater sensitivity to TCDD during development.

/pdf/serum-dioxin-concentrations-and-menstrual-cycle-3vb3o3sszb.pdf

Serum Dioxin Concentrations and Menstrual Cycle Characteristics

Seveso Women's Health Study: a study of the effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin on reproductive health.

Human data derived from the seveso accident - Relevance for human risk assessment

Urinary excretion of D-glucaric acid (uGA) is an index of type II hepatic microsomal enzyme induction, indirectly revealing possible organic effects of some drugs and environmental pollutants. However, its determination is often cumbersome. We suggest a new, fast microanalytical method for uGA determination in which beta-glucuronidase (BG; EC 3.2.1.31) activity inhibition produced by uGA-derived 1,4-D-glucarolactone is measured. With use of purified BG, the method is suitable for centrifugal analyzers, allowing assay of greater than 100 samples per day. Moreover, the method measures uGA more accurately than other enzymatic methods based on BG inhibition. The within-day CV ranges from 7.9% to 4.6% (uGA 31.55-121.31 mumol/L); the between-day CV ranges from 11.5% to 5.0% (uGA 26.09-124.10 mumol/L). The detection limit is 6.0 mumol/L. The standard curve is linear from 10 to 200 mumol/L. Mean analytical recovery is 100%. Comparison with the method of Simmons et al. (Clin Chim Acta 1974;51:47-51) gave a correlation of r = 0.978, y = 1.40x-2.81. Reference intervals were established in a healthy population sample of 369 people (165 under 14 y), and uGA, expressed in micromoles per gram of creatinine, was higher in women than in girls or in males.

/pdf/a-new-method-for-d-glucaric-acid-excretion-measurement-that-37j6i8vmk2.pdf

A new method for D-glucaric acid excretion measurement that is suitable for automated instruments.

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Human data derived from the seveso accident - Relevance for human risk assessment

A new method for D-glucaric acid excretion measurement that is suitable for automated instruments.