Document Detail


Transient and lasting effects of reproductive episodes on NaCl intake of the female rat.
MedLine Citation:
PMID:  1883247     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Following recovery from experimental sodium depletion, both the need-free and the future need-induced NaCl intakes of the rat are increased. The present experiments asked whether a naturally occurring episode of sodium need, pregnancy and lactation, would also enhance NaCl intake. The daily 0.3 M NaCl intake of Long-Evans rats increased from 18.2 ml (prior to pregnancy) to 28.7 ml during pregnancy, and increased further to 36.2 ml during lactation. The daily intakes remained increased after the weaning of the second litter, at 28.5 ml/24h for females which had access to 0.3 M NaCl during the reproductive episodes (DAM + Na) and at 27.6 ml/24h for those which did not (DAM). When they were subsequently sodium depleted, the need-induced NaCl intake of the DAM, but not the DAM + Na group, was significantly increased compared to virgin female rats. The sodium depletion-induced water intakes of both groups were significantly increased. Neither the need-free nor the need-induced intakes of their offspring (as adults) were increased. In summary, pregnancy and/or lactation, in the absence of a sodium deficit, produced increased intakes of NaCl which persisted beyond the reproductive episodes.
Authors:
S P Frankmann; P Ulrich; A N Epstein
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Appetite     Volume:  16     ISSN:  0195-6663     ISO Abbreviation:  Appetite     Publication Date:  1991 Jun 
Date Detail:
Created Date:  1991-09-30     Completed Date:  1991-09-30     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  8006808     Medline TA:  Appetite     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  193-204     Citation Subset:  IM    
Affiliation:
Department of Biology, University of Pennsylvania.
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MeSH Terms
Descriptor/Qualifier:
Animals
Drinking
Eating
Female
Lactation / physiology*
Litter Size
Male
Pregnancy
Pregnancy, Animal / physiology*
Rats
Sodium, Dietary / administration & dosage*
Weight Gain
Weight Loss
Grant Support
ID/Acronym/Agency:
DK-39180/DK/NIDDK NIH HHS; HD-25857/HD/NICHD NIH HHS; NS03469/NS/NINDS NIH HHS
Chemical
Reg. No./Substance:
0/Sodium, Dietary

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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