Regulatory response of intramembranous absorption of amniotic fluid to infusion of exogenous fluid in sheep

American Journal of Physiology - Regulatory Integrative and Comparative Physiology

Volumn 277, Issue 1 46-1, 1999, Pages

  Faber, J Job ^a,b   Anderson, Debra F ^a  

^a OREGON HEALTH AND SCIENCE UNIVERSITY   (United States)

^b OREGON HEALTH AND SCIENCE UNIVERSITY   (United States)

Author keywords

Conceptus; Extrafetal water; Fetus; Homeostasis; Lung fluid; Oligohydramnios; Polyhydramnios; Urine

Indexed keywords

AMNION FLUID; ANIMAL EXPERIMENT; ARTICLE; MICTURITION; NONHUMAN; PREGNANCY; PRIORITY JOURNAL; SHEEP;

EID: 0032768340     PISSN: 03636119     EISSN: None     Source Type: Journal    
DOI: 10.1152/ajpregu.1999.277.1.r236     Document Type: Article

References (27)

1. Anderson, D. F., A. Barbera, and J. J. Faber. Substantial reductions in blood pressure after bilateral nephrectomy in fetal sheep. Am. J. Physiol. 266 (Heart Circ. Physiol. 35): H17-H20, 1994.
2. Anderson, D. F., C. G. Borst, and J. J. Faber. Excess extra-fetal fluid without demonstrable changes in transplacental concentration gradients after week-long infusions of angiotensin into fetal lambs. Eur. J. Obstet. Gynecol. Reprod. Biol. 63: 175-179, 1995.
3. Binder, N. D., and D. F. Anderson. Plasma renin activity responses to graded decreases in renal perfusion pressure in fetal and newborn lambs. Am. J. Physiol. 262 (Regulatory Integrative Comp. Physiol. 31): R524-R529, 1992.
4. Brace, R. A. Fetal blood volume, urine flow, swallowing and amniotic fluid volume responses to long-term intravascular infusions of saline. Am. J. Obstet. Gynecol. 161: 1049-1054, 1989.
5. Brace, R. A. Physiology of amniotic fluid volume regulation. Clin. Obstet. Gynecol. 40: 280-289, 1997.
6. Brace, R.A., W. M. Gilbert, and K. L. Thornburg. Vascularization of the ovine amnion and chorion: a morphometric characterization of the surface area of the intramembranous pathway. Am. J. Obstet. Gynecol. 167: 1747-1755, 1992.
7. Cock, M. L., G. J. McCrabb, M. E. Wlodek, and R. Harding. Effects of prolonged hypoxemia on fetal renal function and amniotic fluid volume in sheep. Am. J. Obstet. Gynecol. 176: 320-326, 1997.
8. Davis, L. E., and R. Hohimer. Hemodynamics and organ blood flow in fetal sheep subjected to chronic anemia. Am. J. Physiol. 261 (Regulatory Integrative Comp. Physiol. 30): R1542-R1548, 1991.
9. Dickson, K. A., and R. Harding. Decline in lung volume and secretion rate during oligohydramnios in fetal sheep. J. Appl. Physiol. 67: 2401-2407, 1989.
10. Gibson, K. J., and E. R. Lumbers. Ovine fetal cardiovascular, renal, and fluid balance responses to 3 days of high arginine vasopressin levels. Am. J. Physiol. 272 (Regulatory Integrative Comp. Physiol. 41): R1069-R1076, 1997.
11. Gilbert, W. M. Rapid intramembranous absorption of water infused into the ovine allantoic cavity. Am. J. Obstet. Gynecol. 167: 1742-1747, 1992.
12. Gilbert, W. M., and R. A. Brace. Increase in fetal hydration during long-term intraamniotic isotonic saline infusion. Am. J. Obstet. Gynecol. 159: 1413-1417, 1988.
13. Gilbert, W. M., and R. A. Brace. The missing link in amniotic fluid volume regulation: intramembranous absorption. Obstet. Gynecol. 74: 748-754, 1989.
14. Harding, R., A. D. Bocking, J. N. Sigger, and P. J. D. Wickham. Composition and volume of fluid swallowed by fetal sheep. Q. J. Exp. Physiol. 69: 487-495, 1984.
15. Jang, P. R., and R. A. Brace. Amniotic fluid composition changes during urine drainage and tracheoesophageal occlusion in fetal sheep. Am. J. Obstet. Gynecol. 167: 1732-1741, 1992.
16. Mann, S. E., M. J. M. Nijland, and M. G. Ross. Ovine fetal adaptations to chronically reduced urine flow: preservation of amniotic fluid volume. J. Appl. Physiol. 81: 2588-2594, 1996.
17. Ogundipe, O. A., L. K. Kullama, L. Day, and M. G. Ross. Assessments of fetal swallowed volume: tracer disappearance versus esophageal flow. J. Soc. Gynecol. Investig. 1: 37-44, 1994.
18. Plentl, A. A. Transfer of water across the perfused umbilical cord. Proc. Soc. Exp. Biol. Med. 107: 622-626, 1961.
19. Ross, M. G., and M. J. M. Nijland. Fetal swallowing: relation to amniotic fluid regulation. Clin. Obstet. Gynecol. 40: 352-365, 1997.
20. Ross, M. G., D. J. Sherman, P. Schreyer, G. Ervin, L. Day, and J. Humme. Fetal rehydration via intraamniotic fluid: contribution of fetal swallowing. Pediatr. Res. 29: 214-217, 1991.
21. Stevenson, K. M., and E. R. Lumbers. Effects of angiotensin II in fetal sheep and modification of its actions by indomethacin. J. Physiol. (Lond.) 487: 147-158, 1995.
22. Tomoda, S., R. A. Brace, and L. D. Longo. Amniotic fluid volume and fetal swallowing rate in sheep. Am. J. Physiol. 249 (Regulatory Integrative Comp. Physiol. 18): R133-R138, 1985.
23. Tomoda, S., R. A. Brace, and L. D. Longo. Amniotic fluid volume regulation: basal volumes and responses to fluid infusion or withdrawal in sheep. Am. J. Physiol. 252 (Regulatory Integrafive Comp. Physiol. 21): R380-R387, 1987.
24. Winer, B. J. Statistical Principles in Experimental Design (2nd ed.). New York: McGraw Hill, 1971, p. 261-308.
25. Wintour, E. M., A. Barnes, E. H. Brown, K. J. Hardy, I. Horacek, J. G. McDougall, and B. A. Scoggins. Regulation of amniotic fluid volume and composition in the ovine fetus. Obstet. Gynecol. 52: 689-693, 1978.
26. Wlodek, M. E., J. R. G. Challis, and J. Patrick. Urethral and urachal urine output to the amniotic and allantoic sacs in fetal sheep. J. Dev. Physiol. (Eynsham) 10: 309-319, 1988.
27. Wlodek, M. E., R. Harding, and G. D. Thorburn. Fetal-maternal fluid and electrolyte relations during chronic fetal urine loss in sheep. Am. J. Physiol. 263 (Renal Fluid Electrolyte Physiol. 32): F671-F679, 1992.