High molecular weight angiotensinogen: a pregnancy associated protein |
| |
Authors: | D A Tewksbury E S Tryon R E Burrill R A Dart |
| |
Institution: | 1. Research Center for High Altitude Medicine, Qinghai University, Xining 810001, China;2. Department of Respiratory Medicine, The Affiliated Hospital of Qinghai University, Xining 810001, China;3. Department of Medicine, Division of Infectious Diseases, University of California San Francisco, California, USA;4. Division of General Internal Medicine, Department of Internal Medicine, Molecular Medicine Program at the University of Utah Health Sciences Center, Salt Lake City, UT, United States;5. GRECC at the George E. Wahlen VAMC, Salt Lake City, UT, USA;6. Department of Internal Medicine, University of Utah, Salt Lake City, UT, United States;7. Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA |
| |
Abstract: | Although it was previously recognized that human amniotic fluid contained appreciable quantities of angiotensinogen, it remained unknown what fraction of the total is high molecular weight angiotensinogen. Fractionation of human amniotic fluid showed that high molecular weight angiotensinogen represents the major component of total angiotensinogen; 58% for 11 normotensive pregnant women and 67% for 12 hypertensive pregnant women. In contrast to plasma where high molecular weight angiotensinogen is elevated in hypertensive pregnant women as compared to normotensive pregnant women, no such difference exists for amniotic high molecular weight angiotensinogen. Serum and amniotic fluid high molecular weight angiotensinogen were compared in six subjects, and no significant correlation was found. In fetal cord blood, high molecular weight angiotensinogen represented only 5.8% of the total angiotensinogen. The site of synthesis of high molecular weight angiotensinogen remains unknown but these data suggest that it is produced in the placenta or in the maternal uterine tissue. Therefore, we propose that human high molecular weight angiotensinogen should be classified as a pregnancy-associated protein. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|