Abstract
We have reported that the posterior pituitary hormone, oxytocin (OT), known for its effects in inducing parturition, lactation and social bonding, is also a skeletal hormone. Here, we demonstrate that OT plays a key role in enabling maternal skeletal mobilization during pregnancy by enhancing the formation of bone resorbing osteoclasts. Osteoclast formation ex vivo is thus diminished in pregnant mothers with genetic OT-deficiency. OT-/- pups at day E20 also show a defect in trabecular bone. μCT measurements reveal normal bone volume, but increased trabecular numbers, suggesting that trabeculae in OT-/- pups are hypomineralized. We suggest that OT facilitates intergenerational transfer of calcium ions from a pregnant mother to the pups.
Original language | English (US) |
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Pages (from-to) | 161-166 |
Number of pages | 6 |
Journal | Biochemical and Biophysical Research Communications |
Volume | 388 |
Issue number | 1 |
DOIs | |
State | Published - Oct 9 2009 |
Externally published | Yes |
Keywords
- Bone density
- Osteoblast
- Osteoclast
- Pituitary hormones
ASJC Scopus subject areas
- Biophysics
- Biochemistry
- Molecular Biology
- Cell Biology