Reductions in adipose tissue and skeletal growth in rat adult offspring after prenatal leptin exposure

in Journal of Endocrinology
Authors:
C Nilsson
Search for other papers by C Nilsson in
Current site
Google Scholar
PubMed
Close
,
D Swolin-Eide
Search for other papers by D Swolin-Eide in
Current site
Google Scholar
PubMed
Close
,
C Ohlsson
Search for other papers by C Ohlsson in
Current site
Google Scholar
PubMed
Close
,
E Eriksson
Search for other papers by E Eriksson in
Current site
Google Scholar
PubMed
Close
,
HP Ho
Search for other papers by HP Ho in
Current site
Google Scholar
PubMed
Close
,
P Bjorntorp
Search for other papers by P Bjorntorp in
Current site
Google Scholar
PubMed
Close
, and
A Holmang
Search for other papers by A Holmang in
Current site
Google Scholar
PubMed
Close
Free access

Sign up for journal news

Leptin is involved in regulating food intake, energy balance and bone formation. Increasing evidence suggests that leptin is also involved in fetal growth and development. The aim of this study was to determine if increased maternal leptin is followed by changes in body composition, skeletal growth or hormonal regulation in the adult rat offspring. Pregnant rats were given injections of either human recombinant leptin (3.5 mg/kg, i.p.) or vehicle on days 8, 10 and 12 of gestation. Both genders of leptin-exposed offspring showed significantly reduced adipose tIssue weight at adult age. Skeletal growth and cortical bone dimensions were significantly reduced. Circulating testosterone levels were significantly increased in female leptin-exposed offspring, and male leptin-exposed offspring had significant testicular enlargement. No significant effects were seen on circulating leptin levels or hypothalamic protein levels of the leptin receptor. The results demonstrate that maternally administered leptin is involved in fetal growth and development, leading to lean offspring with reduced skeletal growth.

 

  • Collapse
  • Expand