In the October 2006 issue of the journal Endocrinology, a collaborative research study by scientists at Cummings School of Veterinary Medicine at Tufts University and the University of Otago Medical School in Dunedin, New Zealand, shows that pregnancy and lactation in rodents produce long-term changes in hormone receptor actions in a mother’s brain that may affect maternal behavior as well as her response to stress.
“It appears that hormonal changes occurring in rats after they nurse their pups may bring about endocrine and neuroendocrine changes that help produce better mothering skills with each pregnancy and reduce the mother’s anxiety levels as she matures,” said Robert S. Bridges, PhD, the senior author of this paper and head of the reproductive biology section at Tufts’ Cummings School of Veterinary Medicine.
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