NEURAL FACTORS IN THE MAINTENANCE OF LACTATION IN THE RAT

in Journal of Endocrinology
Authors:
J. A. EDWARDSON
Search for other papers by J. A. EDWARDSON in
Current site
Google Scholar
PubMed
Close
and
J. T. EAYRS
Search for other papers by J. T. EAYRS in
Current site
Google Scholar
PubMed
Close
Restricted access
Rent on DeepDyve

Sign up for journal news

SUMMARY

The role of the peripheral innervation of mammary tissue in the maintenance of lactation has been investigated by the procedure of selective thelectomy combined with denervation of the posterior thoracic nipples.

When suckling is restricted to a single pair of nipples bilateral transection of the three adjacent nerves supplying a nipple arrests lactation completely; partial denervation is associated with a reduced level of lactational performance which is directly related to the concentration of the residual innervation.

Increase in litter size is associated with an overall increase in milk-yield up to a limit beyond which the addition of further young to the litter is without effect.

It is inferred that there is a quantitative relationship between the neural stimulus of suckling and the endocrine response of the hypothalamopituitary system.

 

  • Collapse
  • Expand