Low-Level Human Equivalent Gestational Lead Exposure Produces Sex-Specific Motor and Coordination Abnormalities and Late-Onset Obesity in Year-Old Mice
2008

Lead Exposure in Pregnant Mice Affects Offspring's Motor Skills and Weight

Sample size: 12 publication 10 minutes Evidence: moderate

Author Information

Author(s): Leasure J. Leigh, Giddabasappa Anand, Chaney Shawntay, Johnson Jerry E. Jr., Pothakos Konstantinos, Lau Yuen Sum, Fox Donald A.

Primary Institution: University of Houston

Hypothesis

Does low-level gestational lead exposure affect motor functions and body weight in offspring?

Conclusion

Gestational lead exposure leads to permanent male-specific motor deficits and late-onset obesity in mice.

Supporting Evidence

  • Male offspring of lead-exposed mothers showed increased body weight at one year of age.
  • Low-dose lead exposure resulted in more significant motor deficits compared to high-dose exposure.
  • Lead exposure altered dopamine levels in the brains of male offspring.

Takeaway

When pregnant mice drink water with lead, their baby mice can have trouble moving and may get heavier as they grow up.

Methodology

Female C57BL/6 mice were exposed to varying levels of lead in water before and during pregnancy, and their offspring were tested for motor skills and body weight at one year of age.

Potential Biases

Potential bias in interpreting results due to the focus on specific lead exposure levels.

Limitations

The study primarily focused on male mice, limiting the understanding of effects on females.

Participant Demographics

C57BL/6 mice, both male and female.

Statistical Information

P-Value

< 0.05

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1289/ehp.10862

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