Mating pairs of mice were maintained continuously on drinking water containing 50 mEq/l LiCl and its effects on reproduction and postnatal development were monitored. In mating pairs put on lithium at 6–8 weeks of age, the lithium does not appear to reduce litter size at birth but it does increase postnatal mortality and the length of time between litters, and reduces the total number of litters a mating pair may have. In mating pairs put on lithium at 3 weeks of age, it severely delays postnatal growth and development of all pups in the litter. With the exception of the liver, this delayed growth and development does not appear to affect internal organs as severely as somatic body parts. This delayed growth may be the result of some effect lithium may have on certain hormones such as prolactin, thyroxine and growth hormone.

Keywords:
Lithium, Mice, Reproduction, Growth, Development
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© 1983 S. Karger AG, Basel
1983
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