(1) Objective The Animal Core will provide the investigators with chronically instrumented pregnant and nonpregnant sheep and with non instrumented pregnant and nonpregnant animals. The specific goals of the Animal Core are: (a) to obtain time-dated pregnant animals at 75 days of gestation. These animals will be randomly assigned to receive either vehicle or betamethasone injections at 80 an 81 gays gestation, (b) to prepare chronically instrumented adult or fetal sheep for use in the different research projects, (c) to conduct necropsies and facilitate the collection of tissues for the in vitro studies described in the individual projects, (d) to facilitate the in vivo studies involving monitoring physiologic variables in fetal, pregnant and nonpregnant sheep under acute or chronic conditions.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Research Program Projects (P01)
Project #
5P01HD047584-05
Application #
7904045
Study Section
Special Emphasis Panel (ZHD1)
Project Start
Project End
Budget Start
2009-07-01
Budget End
2010-06-30
Support Year
5
Fiscal Year
2009
Total Cost
$440,532
Indirect Cost
Name
Wake Forest University Health Sciences
Department
Type
DUNS #
937727907
City
Winston-Salem
State
NC
Country
United States
Zip Code
27157
South, Andrew M; Nixon, Patricia A; Chappell, Mark C et al. (2018) Obesity is Associated with Higher Blood Pressure and Higher Levels of Angiotensin II but Lower Angiotensin-(1-7) in Adolescents Born Preterm. J Pediatr :
South, Andrew M; Nixon, Patricia A; Chappell, Mark C et al. (2018) Association between preterm birth and the renin-angiotensin system in adolescence: influence of sex and obesity. J Hypertens 36:2092-2101
Massmann, G Angela; Zhang, Jie; Seong, Won Joon et al. (2017) Sex-dependent effects of antenatal glucocorticoids on insulin sensitivity in adult sheep: role of the adipose tissue renin angiotensin system. Am J Physiol Regul Integr Comp Physiol 312:R1029-R1038
Sigmund, Curt D; Diz, Debra I; Chappell, Mark C (2017) No Brain Renin-Angiotensin System: Déjà vu All Over Again? Hypertension 69:1007-1010
South, Andrew M; Nixon, Patricia A; Chappell, Mark C et al. (2017) Antenatal corticosteroids and the renin-angiotensin-aldosterone system in adolescents born preterm. Pediatr Res 81:88-93
Su, Yixin; Bi, Jianli; Pulgar, Victor M et al. (2017) Antenatal betamethasone attenuates the angiotensin-(1-7)-Mas receptor-nitric oxide axis in isolated proximal tubule cells. Am J Physiol Renal Physiol 312:F1056-F1062
Wilson, Bryan A; Chappell, Mark C (2017) Assessment of the Renin-Angiotensin System in Cellular Organelle: New Arenas for Study in the Mitochondria. Methods Mol Biol 1614:99-121
Nixon, Patricia A; Washburn, Lisa K; Michael O'Shea, Thomas et al. (2017) Antenatal steroid exposure and heart rate variability in adolescents born with very low birth weight. Pediatr Res 81:57-62
Wilson, Bryan A; Cruz-Diaz, Nildris; Su, Yixin et al. (2017) Angiotensinogen import in isolated proximal tubules: evidence for mitochondrial trafficking and uptake. Am J Physiol Renal Physiol 312:F879-F886
Chappell, Mark C; Al Zayadneh, Ebaa M (2017) Angiotensin-(1-7) and the Regulation of Anti-Fibrotic Signaling Pathways. J Cell Signal 2:

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