Long-term effects of nicotine on bone and calciotropic hormones in adult female rats

Yiu K. Fung, Urszula Iwaniec, Diane M. Cullen, Mohammed P. Akhter, Mary C. Haven, Patrick Timmins

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

This study determined the effects of nicotine on serum concentrations of several calciotropic hormones, and bone formation and resorption end-points in 7 month old, adult female rats. Animals were administered either saline (n= 9/group), low dose nicotine at 3.0 mg/kg/day (n=10/group) or high dose nicotine at 4.5 mg/kg/day (n=11/group) by subcutaneous osmotic minipumps. At the end of a three months treatment period, serum concentrations of calcium, phosphorus, parathyroid hormone, calcitonin, 25-hydroxyvitamin D and 1,25- dihydroxyvitamin D were determined. Femora, tibiae, and lumbar vertebrae (3- 5) were collected and bone parameters evaluated included mineral density and content (femora and vertebrae), strength (femora and vertebrae) and histomorphometry (tibiae). Animals given nicotine had significantly lower levels of 25-hydroxyvitamin D than controls [20.8±1.4 ng/ml for the low dose group and 20.7±1.0 ng/ml for the high dose group versus 27.6±1.3 ng/ml for the control group (mean±S.E.M.), P2 versus 6.2±0.2 mm2, P

Original languageEnglish (US)
Pages (from-to)181-187
Number of pages7
JournalPharmacology and Toxicology
Volume85
Issue number6
StatePublished - Jan 1 1999

All Science Journal Classification (ASJC) codes

  • Toxicology
  • Pharmacology
  • Health, Toxicology and Mutagenesis

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