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Article
Association of blood lead levels with onset of puberty in Russian boys
Lee Lab Publications
  • Russ Hauser, Harvard School of Public Health
  • Oleg Sergeyev, Samara State Medical University
  • Susan Korrick, Harvard Medical School
  • Mary M. Lee, University of Massachusetts Medical School
  • Boris Revich, Russian Academy of Sciences
  • Elana Gitin, Harvard Medical School
  • Jane S. Burns, Harvard University
  • Paige L. Williams, Harvard School of Public Health
UMMS Affiliation
Department of Pediatrics; Department of Cell Biology
Date
7-17-2008
Document Type
Article
Medical Subject Headings
Body Weights and Measures; Child; Cross-Sectional Studies; Humans; Lead; Logistic Models; Male; Puberty; Russia; Socioeconomic Factors
Disciplines
Abstract
BACKGROUND: Epidemiologic studies suggest a temporal trend of earlier onset and longer duration of puberty, raising concerns regarding the potential impact of environmental factors on pubertal development. Lead exposure has been associated with delayed pubertal onset in girls; however, epidemiologic data in boys are limited. METHODS: We used multivariable logistic regression models to explore the cross-sectional association of blood lead levels with growth and pubertal onset based on physician-assessed testicular volume (TV) and pubertal staging in 489 boys 8-9 years of age from Chapaevsk, Russia. We used multivariable linear regression models to assess associations of blood lead levels with somatic growth at the study entry visit. RESULTS: The median (25th-75th percentile) blood lead level was 3 microg/dL (2-5 microg/dL). Height, weight, body mass index, birth weight, and gestational age were predictive of the onset of puberty as assessed either by TV (> 3 mL), genitalia stage (G2), or both. Blood lead level was inversely associated with height (p < 0.001) and weight (p = 0.06) after adjustment for birth weight, gestational age, and age at examination. In multivariable adjusted analyses, boys with blood lead levels > or = 5 microg/dL had 43% reduced odds of having entered G2 compared with those with lower levels (odds ratio = 0.57; 95% confidence interval, 0.34-0.95, p = 0.03). CONCLUSIONS: Relatively low environmental blood lead levels were associated with decreased growth and differences in pubertal onset in periadolescent Russian boys. Future analyses of this prospective cohort will address pubertal onset and progression in relation to lead and other environmental chemicals.
Rights and Permissions
Citation: Environ Health Perspect. 2008 Jul;116(7):976-80. doi:10.1289/ehp.10516. Link to article on publisher's site
Related Resources
Link to Article in PubMed
PubMed ID
18629324
Citation Information
Russ Hauser, Oleg Sergeyev, Susan Korrick, Mary M. Lee, et al.. "Association of blood lead levels with onset of puberty in Russian boys" Vol. 116 Iss. 7 (2008) ISSN: 0091-6765 (Linking)
Available at: http://works.bepress.com/mary_lee/43/