title: Trace elements and endometriosis: the ENDO study.
abstract: There has been limited study of trace elements and endometriosis. Using a matched cohort design, 473 women aged 18-44 years were recruited into an operative cohort, along with 131 similarly aged women recruited into a population cohort. Endometriosis was defined as surgically visualized disease in the operative cohort, and magnetic resonance imaging diagnosed disease in the population cohort. Twenty trace elements in urine and three in blood were quantified using inductively coupled plasma mass spectrometry. Logistic regression estimated the adjusted odds (aOR) of endometriosis diagnosis for each element by cohort. No association was observed between any element and endometriosis in the population cohort. In the operative cohort, blood cadmium was associated with a reduced odds of diagnosis (aOR=0.55; 95% CI: 0.31, 0.98), while urinary chromium and copper reflected an increased odds (aOR=1.97; 95% CI: 1.21, 3.19; aOR=2.66; 95% CI: 1.26, 5.64, respectively). The varied associations underscore the need for continued research.
authors.affiliation: Division of Epidemiology, Statistics and Prevention Research, Eunice Kennedy Shriver National Institute of Child Health and Human Health, 6100 Executive Blvd. Rockville, Maryland 20852, United States. Electronic address: pollacka@mail.nih.gov.
authors.forename: Anna Z
authors.initials: AZ
authors.lastname: Pollack
authors.forename: Germaine M Buck
authors.initials: GM
authors.lastname: Louis
authors.forename: Zhen
authors.initials: Z
authors.lastname: Chen
authors.forename: C Matthew
authors.initials: CM
authors.lastname: Peterson
authors.forename: Rajeshwari
authors.initials: R
authors.lastname: Sundaram
authors.forename: Mary S
authors.initials: MS
authors.lastname: Croughan
authors.forename: Liping
authors.initials: L
authors.lastname: Sun
authors.forename: Mary L
authors.initials: ML
authors.lastname: Hediger
authors.forename: Joseph B
authors.initials: JB
authors.lastname: Stanford
authors.forename: Michael W
authors.initials: MW
authors.lastname: Varner
authors.forename: Christopher D
authors.initials: CD
authors.lastname: Palmer
authors.forename: Amy J
authors.initials: AJ
authors.lastname: Steuerwald
authors.forename: Patrick J
authors.initials: PJ
authors.lastname: Parsons
mesh_terms: D000328:Adult; D001151:Arsenic / Q000652:urine; D002140:California / Q000453:epidemiology; D015331:Cohort Studies; D004715:Endometriosis / Q000097:blood* / Q000453:epidemiology / Q000652:urine*; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000097:blood* / Q000652:urine*; D005260:Female; D006801:Humans; D019216:Metals, Heavy / Q000097:blood* / Q000652:urine*; D016017:Odds Ratio; D014589:Utah / Q000453:epidemiology; D055815:Young Adult
chemical_list: D004785:Environmental Pollutants; D019216:Metals, Heavy; D001151:Arsenic
keywords: 95% confidence interval; Arsenic; BMI; CI; Cadmium; Cd; Chromium; ENDO; Endometriosis; Hg; IQC; LOD; Lead; MRI; Mercury; Metals; NHANES; NIST; National Health and Nutrition Examination Survey; National Institute of Standards and Technology; OR; Pb; Trace elements; aOR; adjusted odds ratio; body mass index; cadmium; endometriosis: Natural History, Diagnosis and Outcomes Study; internal quality control; lead; limits of detection; magnetic resonance imaging; mercury; odds ratio
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