This subproject is one of many research subprojects utilizing theresources provided by a Center grant funded by NIH/NCRR. The subproject andinvestigator (PI) may have received primary funding from another NIH source,and thus could be represented in other CRISP entries. The institution listed isfor the Center, which is not necessarily the institution for the investigator.Amniotic fluid (AF) is an essential accompaniment of normal pregnancy, necessary for fetal movement, growth and development. Oligohydramnios (OH), or reduced AF volume, occurs in 8 to 38% of all pregnancies. The intramembranous pathway of AF fluid absorption (across the amniotic membrane) has recently been recognized as a critical regulatory path for AF resorption, contributing importantly to AF volume homeostasis. Yet the underlying molecular and cellular mechanisms for water absorption across the amniotic membranes remain unknown. Since the discovery of AQP water channels about a decade ago, AQPs are increasingly recognized to play an important role in water transport across cell membranes. IM resorption of AF (water flow across the amnion and perhaps chorion, to the fetal vasculature) is potentially mediated via AQP water channel(s). However, of the eleven identified mammalian AQPs, few have been examined in fetal membranes. We have demonstrated AQP8 expression in both human and ovine amnion, chorion and placenta. These results suggest that AQP8, or other water channels may provide a pathway for fluid transport across fetal membranes, contributing to AF volume homeostasis. The purpose of the project is to investigate the aquaporins gene expression in human fetal membrane to further determine which water channels contribute to the regulation of amniotic fluid resorption. Human placenta and fetal membranes from normal term pregnancy will be studied. Immediately upon cesarean section delivery, amnion, chorion, placenta, and umbilical cord will be dissected and frozen in liquid nitrogen. Tissues will be stored at -70C until further analysis. Total RNA will be isolated from these tissues using Trizol reagent (Life Technologies, Gaithersburg, MD) for RT-PCR. RT-PCR will be used to detect the aquaporins gene expression in these tissues. We will use the discarded human placenta and fetal membranes from the subject upon delivery. Nothing will be done to the subjects.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
2M01RR000425-38
Application #
7606210
Study Section
Special Emphasis Panel (ZRR1-CR-5 (01))
Project Start
2007-02-01
Project End
2007-11-30
Budget Start
2007-02-01
Budget End
2007-11-30
Support Year
38
Fiscal Year
2007
Total Cost
$1,297
Indirect Cost
Name
La Biomed Research Institute/ Harbor UCLA Medical Center
Department
Type
DUNS #
069926962
City
Torrance
State
CA
Country
United States
Zip Code
90502
Mehta, Puja K; Hermel, Melody; Nelson, Michael D et al. (2018) Mental stress peripheral vascular reactivity is elevated in women with coronary vascular dysfunction: Results from the NHLBI-sponsored Cardiac Autonomic Nervous System (CANS) study. Int J Cardiol 251:8-13
Kim, Se-Min; Cui, Jinrui; Rhyu, Jane et al. (2018) Association between site-specific bone mineral density and glucose homeostasis and anthropometric traits in healthy men and women. Clin Endocrinol (Oxf) 88:848-855
Sharma, Shilpa; Mehta, Puja K; Arsanjani, Reza et al. (2018) False-positive stress testing: Does endothelial vascular dysfunction contribute to ST-segment depression in women? A pilot study. Clin Cardiol 41:1044-1048
Shufelt, Chrisandra; Manson, Joann (2018) Managing Menopause by Combining Evidence With Clinical Judgment. Clin Obstet Gynecol 61:470-479
Cherukuri, Lavanya; Smith, Michael S; Tayek, John A (2018) The durability of oral diabetic medications: Time to A1c baseline and a review of common oral medications used by the primary care provider. Endocrinol Diabetes Metab J 2:
Nicholls, Stephen J; Tuzcu, E Murat; Wolski, Kathy et al. (2018) Extent of coronary atherosclerosis and arterial remodelling in women: the NHLBI-sponsored Women's Ischemia Syndrome Evaluation. Cardiovasc Diagn Ther 8:405-413
Wei, Janet; Bakir, May; Darounian, Navid et al. (2018) Myocardial Scar Is Prevalent and Associated With Subclinical Myocardial Dysfunction in Women With Suspected Ischemia But No Obstructive Coronary Artery Disease: From the Women's Ischemia Syndrome Evaluation-Coronary Vascular Dysfunction Study. Circulation 137:874-876
Elboudwarej, Omeed; Wei, Janet; Darouian, Navid et al. (2018) Maladaptive left ventricular remodeling in women: An analysis from the Women's Ischemia Syndrome Evaluation-Coronary Vascular Dysfunction study. Int J Cardiol 268:230-235
Shufelt, Chrisandra; Bairey Merz, C Noel; Pettinger, Mary B et al. (2018) Estrogen-alone therapy and invasive breast cancer incidence by dose, formulation, and route of delivery: findings from the WHI observational study. Menopause 25:985-991
Nakanishi, Rine; Baskaran, Lohendran; Gransar, Heidi et al. (2017) Relationship of Hypertension to Coronary Atherosclerosis and Cardiac Events in Patients With Coronary Computed Tomographic Angiography. Hypertension 70:293-299

Showing the most recent 10 out of 1232 publications