This project tests the effects of maternal perinatal diet on skeletal acquisition. Perinatal developmental programming, triggered by perinatal caloric restriction or high fat diet, is a known risk factor for adult neuroendocrine, immune, reproductive, and metabolic disease, including obesity, atherosclerosis, and type II diabetes. However, little is known about how early life nutrition impacts skeletal development. The general hypothesis is that perinatal caloric restriction (CR) or high fat (HF) diet will initiate developmental programming that decreases postnatal bone growth and acquisition of bone mineral density. To test whether perinatal energetic status affects bone growth, mice exposed to maternal CR or HF diet during gestation/lactation will be compared to postnatally exposed mice. Previous studies have shown negative effects of CR and HF diets on bone in adult rodents, but did not test for effects on juvenile skeletal acquisition.
Our specific aims i nclude determining whether caloric availability (ad lib vs. restricted) and macronutrient source (high fat vs. high carbohydrate) during skeletal growth and/or maternal diet during pregnancy and lactation affect bone mass, microarchitecture and strength. We will also test whether prenatal diet affects the skeletal response to postnatal diet. The hypothesized mechanism for these bone-environment interactions involves signaling of energetic status by leptin, a fat-derived signal of energetic status, via ss-adrenergic receptors in bone. Thus our experiments will compare skeletal and hormonal response to prenatal and postnatal energy availability in normal mice and ss-adrenergic receptor2 knockout (ss2-AR KO) mice. By separating the effects of direct leptin action on bone from the effects of central leptin signaling in osteoblasts (absent in ss2-AR KO mice), we will generate unique data on the effects of central vs. peripheral leptin signaling on trabecular and cortical bone.

Public Health Relevance

This project has several applications to human health. Osteoporosis and obesity are increasing markedly in society, and understanding how interactions between prenatal and postnatal nutrition affect the skeleton may help to identify mechanisms underlying attainment of bone mass and strength during growth.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Postdoctoral Individual National Research Service Award (F32)
Project #
1F32HD060419-01A2
Application #
7914827
Study Section
Special Emphasis Panel (ZRG1-F10B-S (20))
Program Officer
Winer, Karen
Project Start
2010-09-30
Project End
2013-09-29
Budget Start
2010-09-30
Budget End
2011-09-29
Support Year
1
Fiscal Year
2010
Total Cost
$50,474
Indirect Cost
Name
Beth Israel Deaconess Medical Center
Department
Type
DUNS #
071723621
City
Boston
State
MA
Country
United States
Zip Code
02215
Devlin, M J; Robbins, A; Cosman, M N et al. (2018) Differential effects of high fat diet and diet-induced obesity on skeletal acquisition in female C57BL/6J vs. FVB/NJ Mice. Bone Rep 8:204-214
Devlin, M J; Brooks, D J; Conlon, C et al. (2016) Daily leptin blunts marrow fat but does not impact bone mass in calorie-restricted mice. J Endocrinol 229:295-306
Devlin, M J; Van Vliet, M; Motyl, K et al. (2014) Early-onset type 2 diabetes impairs skeletal acquisition in the male TALLYHO/JngJ mouse. Endocrinology 155:3806-16
Devlin, M J; Grasemann, C; Cloutier, A M et al. (2013) Maternal perinatal diet induces developmental programming of bone architecture. J Endocrinol 217:69-81
Grasemann, Corinna; Devlin, Maureen J; Rzeczkowska, Paulina A et al. (2012) Parental diabetes: the Akita mouse as a model of the effects of maternal and paternal hyperglycemia in wildtype offspring. PLoS One 7:e50210
Devlin, M J; Bouxsein, M L (2012) Influence of pre- and peri-natal nutrition on skeletal acquisition and maintenance. Bone 50:444-51
Devlin, Maureen J (2011) Why does starvation make bones fat? Am J Hum Biol 23:577-85
Devlin, Maureen J; Cloutier, Alison M; Thomas, Nishina A et al. (2010) Caloric restriction leads to high marrow adiposity and low bone mass in growing mice. J Bone Miner Res 25:2078-88