Stereotaxic neurosurgical techniques and baroreflex challenges will be employed in the chronically-instrumented fetal sheep to surgically disconnect the PVN to evaluate the extent to which and the mechanisms by which the late gestation fetal sheep PVN: (1) modifies normal development of brainstem and sympathetic preganglionic neuron regulation of peripheral vascular tone; and (2) is a site for production of glucocorticoid-induced hypertension.

Agency
National Institute of Health (NIH)
Institute
National Heart, Lung, and Blood Institute (NHLBI)
Type
Research Project (R01)
Project #
1R01HL065399-01
Application #
6166120
Study Section
Human Embryology and Development Subcommittee 1 (HED)
Program Officer
Spinella, Giovanna M
Project Start
2000-08-01
Project End
2004-07-31
Budget Start
2000-08-01
Budget End
2001-07-31
Support Year
1
Fiscal Year
2000
Total Cost
$342,410
Indirect Cost
Name
Cornell University
Department
Other Basic Sciences
Type
Schools of Veterinary Medicine
DUNS #
City
Ithaca
State
NY
Country
United States
Zip Code
14850
Gilbert, Jeffrey S; Ford, Stephen P; Lang, A Lee et al. (2007) Nutrient restriction impairs nephrogenesis in a gender-specific manner in the ovine fetus. Pediatr Res 61:42-7
Gilbert, Jeffrey S; Cox, Laura A; Mitchell, Graham et al. (2006) Nutrient-restricted fetus and the cardio-renal connection in hypertensive offspring. Expert Rev Cardiovasc Ther 4:227-37
Gilbert, Jeffrey S; Lang, Alvin L; Grant, Angela R et al. (2005) Maternal nutrient restriction in sheep: hypertension and decreased nephron number in offspring at 9 months of age. J Physiol 565:137-47
Gilbert, Jeffrey S; Lang, Alvin L; Nijland, Mark J (2005) Maternal nutrient restriction and the fetal left ventricle: decreased angiotensin receptor expression. Reprod Biol Endocrinol 3:27
McDonald, T J; Franko, K L; Brown, J M et al. (2003) Betamethasone in the last week of pregnancy causes fetal growth retardation but not adult hypertension in rats. J Soc Gynecol Investig 10:469-73