Placental restriction in multi-fetal pregnancies increases spontaneous ambulatory activity during daylight hours in young adult female sheep
| Autor: | Amy L. Wooldridge, Kathryn L. Gatford, Wayne S. Pitchford, M Kaur, M. J. Wilkes, Glenn K. McConell, P. I. Hynd |
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| Rok vydání: | 2016 |
| Předmět: |
medicine.medical_specialty
Fetus business.industry Birth weight Medicine (miscellaneous) Intrauterine growth restriction 030209 endocrinology & metabolism Placental insufficiency medicine.disease 03 medical and health sciences Low birth weight 0302 clinical medicine Endocrinology Internal medicine Ambulatory medicine 030212 general & internal medicine Young adult medicine.symptom Adverse effect business |
| Zdroj: | Journal of Developmental Origins of Health and Disease. 7:525-537 |
| ISSN: | 2040-1752 2040-1744 |
| Popis: | Intrauterine growth restriction (IUGR) has adverse effects on metabolic health and early life, whereas physical activity is protective against later development of metabolic disease. Relationships between birth weight and physical activity in humans, and effects of IUGR on voluntary activity in rodents, are mixed and few studies have measured physical activity in a free-ranging environment. We hypothesized that induced restriction of placental growth and function (PR) in sheep would decrease spontaneous ambulatory activity (SAA) in free-ranging adolescent and young adult progeny from multi-fetal pregnancies. To test this hypothesis, we used Global Positioning System watches to continuously record SAA between 1800 and 1200 h the following day, twice during a 16-day recording period, in progeny of control (CON, n=5 males, 9 females) and PR pregnancies (n=9 males, 10 females) as adolescents (30 weeks) and as young adults (43 weeks). PR reduced size at birth overall, but not in survivors included in SAA studies. In adolescents, SAA did not differ between treatments and females were more active than males overall and during the day (each PP=0.020), with a similar trend in males (P=0.053) and was greater in females than males (P=0.016). Adult SAA was negatively correlated with birth weight in females only. Contrary to our hypothesis, restricted placental function and small size at birth did not reduce progeny SAA. The mechanisms for increased daytime SAA in adult female PR and low birth weight sheep require further investigation. |
| Databáze: | OpenAIRE |
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