Effects of Maternal Hypoxia during Pregnancy on Bone Development in Offspring: A Guinea Pig Model
Low birth weight is associated with reduced bone mass and density in adult life. However, effects of maternal hypoxia (MH) on offspring bone development are not known. Objective. The current study investigated the effects of fetal growth restriction induced by MH during the last half of gestation on...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | International Journal of Endocrinology |
| Online Access: | http://dx.doi.org/10.1155/2014/916918 |
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| author | Alice M. C. Lee Janna L. Morrison Kimberley J. Botting Tetyana Shandala Cory J. Xian |
| author_facet | Alice M. C. Lee Janna L. Morrison Kimberley J. Botting Tetyana Shandala Cory J. Xian |
| author_sort | Alice M. C. Lee |
| collection | DOAJ |
| description | Low birth weight is associated with reduced bone mass and density in adult life. However, effects of maternal hypoxia (MH) on offspring bone development are not known. Objective. The current study investigated the effects of fetal growth restriction induced by MH during the last half of gestation on bone structure and volume in the offspring of the fetus near term and the pup in adolescence. Methods. During 35–62-day gestation (term, 69d), guinea pigs were housed in room air (21% O2; control) or 12% O2 (MH). Offspring femur and tibia were collected at 62d gestation and 120d after birth. Results. MH decreased fetal birth weight but did not affect osteogenic potential pools in the fetal bone marrow. Histological analysis showed no effects of MH on tibial growth plate thickness in either fetal or postnatal offspring, although there was increased VEGF mRNA expression in the growth plate of postnatal offspring. MH did not change primary spongiosa height but lowered collagen-1 mRNA expression in postnatal offspring. There was increased mRNA expression of adipogenesis-related gene (FABP4) in bone from the MH postnatal offspring. Conclusion. MH during late gestation did not change the pool of osteogenic cells before birth or growth plate heights before and after birth. However, MH reduced expression of bone formation marker (collagen-1) and increased expression of fat formation marker (FABP4) in postnatal offspring bone. |
| format | Article |
| id | doaj-art-4d28b2cecebf48b48fb765ac08198646 |
| institution | Kabale University |
| issn | 1687-8337 1687-8345 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Endocrinology |
| spelling | doaj-art-4d28b2cecebf48b48fb765ac081986462025-02-03T05:49:37ZengWileyInternational Journal of Endocrinology1687-83371687-83452014-01-01201410.1155/2014/916918916918Effects of Maternal Hypoxia during Pregnancy on Bone Development in Offspring: A Guinea Pig ModelAlice M. C. Lee0Janna L. Morrison1Kimberley J. Botting2Tetyana Shandala3Cory J. Xian4Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, GPO Box 2471, Adelaide, SA 5001, AustraliaSansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, GPO Box 2471, Adelaide, SA 5001, AustraliaSansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, GPO Box 2471, Adelaide, SA 5001, AustraliaSansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, GPO Box 2471, Adelaide, SA 5001, AustraliaSansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, City East Campus, GPO Box 2471, Adelaide, SA 5001, AustraliaLow birth weight is associated with reduced bone mass and density in adult life. However, effects of maternal hypoxia (MH) on offspring bone development are not known. Objective. The current study investigated the effects of fetal growth restriction induced by MH during the last half of gestation on bone structure and volume in the offspring of the fetus near term and the pup in adolescence. Methods. During 35–62-day gestation (term, 69d), guinea pigs were housed in room air (21% O2; control) or 12% O2 (MH). Offspring femur and tibia were collected at 62d gestation and 120d after birth. Results. MH decreased fetal birth weight but did not affect osteogenic potential pools in the fetal bone marrow. Histological analysis showed no effects of MH on tibial growth plate thickness in either fetal or postnatal offspring, although there was increased VEGF mRNA expression in the growth plate of postnatal offspring. MH did not change primary spongiosa height but lowered collagen-1 mRNA expression in postnatal offspring. There was increased mRNA expression of adipogenesis-related gene (FABP4) in bone from the MH postnatal offspring. Conclusion. MH during late gestation did not change the pool of osteogenic cells before birth or growth plate heights before and after birth. However, MH reduced expression of bone formation marker (collagen-1) and increased expression of fat formation marker (FABP4) in postnatal offspring bone.http://dx.doi.org/10.1155/2014/916918 |
| spellingShingle | Alice M. C. Lee Janna L. Morrison Kimberley J. Botting Tetyana Shandala Cory J. Xian Effects of Maternal Hypoxia during Pregnancy on Bone Development in Offspring: A Guinea Pig Model International Journal of Endocrinology |
| title | Effects of Maternal Hypoxia during Pregnancy on Bone Development in Offspring: A Guinea Pig Model |
| title_full | Effects of Maternal Hypoxia during Pregnancy on Bone Development in Offspring: A Guinea Pig Model |
| title_fullStr | Effects of Maternal Hypoxia during Pregnancy on Bone Development in Offspring: A Guinea Pig Model |
| title_full_unstemmed | Effects of Maternal Hypoxia during Pregnancy on Bone Development in Offspring: A Guinea Pig Model |
| title_short | Effects of Maternal Hypoxia during Pregnancy on Bone Development in Offspring: A Guinea Pig Model |
| title_sort | effects of maternal hypoxia during pregnancy on bone development in offspring a guinea pig model |
| url | http://dx.doi.org/10.1155/2014/916918 |
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