Principal Investigator:

Nina Stachenfeld, PhD
Associate Fellow,
John B. Pierce Laboratory

Associate Professor
Epidemiology & Public Health
Yale University School of Medicine


Research Interests

The regulation of body fluid and sodium content involves the integration of several physiological systems. A number of investigations have found that hormones involved primarily in reproductive function, specifically estrogen and progesterone, have important effects on the systems that regulate body fluid balance. Estrogen, for example, can alter the "set point" around which the thirst mechanism and kidney water reabsorptive functions regulate body fluid content. Progesterone appears to affect body fluid content through its impact on the hormones that regulate body sodium content. The study of these hormones is challenging in young women because estrogen and progesterone fluctuate during the menstrual cycle. Consequently, Dr. Stachenfeld has examined these systems in older postmenopausal, women before and during treatment with estrogen, and has used the birth control pill to control the levels of estrogen and progesterone in young women.


Current Projects

Dr. Stachenfeld is using drugs that suppress estrogen and progesterone in young women so that these hormones can then be added back in controlled doses. Under these conditions, she will examine direct effects of estrogen and progesterone on the regulation of both body fluid and blood pressure regulation.


Representative Publications

Stachenfeld, N.S. and D.L. Keefe. Estrogen effects on osmotic regulation of AVP and fluid balance. Am. J. Physiol. 283 (Endocrinol. Metab.) E711-E721, 2002.

Calzone, W.L., Silva, C., Keefe, D.L., Stachenfeld, N.S. Progesterone does not alter osmotic regulation of AVP. Am. J. Physiol. 281 (Regulatory, Integrative, Comp. Physiol): R2011-R2020, 2001.

Stachenfeld, N.S, A.E. Splenser, W.L. Calzone, C. Silva, M.P.Taylor and D.L. Keefe. Sex differences in osmotic regulation of AVP. J. Appl. Physiol. 91: 1893-1901, 2001.

Stachenfeld, N.S., D.L. Keefe, and S. F. Palter. Estrogen and progesterone effects on transcapillary fluid dynamics. Am. J. Physiol. 281 (Regulatory, Integrative, Comp. Physiol): R1319-R1329, 2001.

Stachenfeld, N.S., Silva, C., Keefe, D.L. Estrogen modifies the temperature effects of progesterone. J. Appl. Physiol. 88: 1643-1649, 2000.

Stachenfeld, N.S., Silva, C., Keefe, D, Nadel, E.R. Effects of oral contraceptives on body fluid regulation. J. Appl. Physiol. 87: 1016-1025, 1999.

Stachenfeld, N.S., DiPietro, L., Palter, S., Nadel, E.R. Estrogen influences osmotic regulation of AVP and body water balance in postmenopausal women. Am. J. Physiol. 274 (Regulatory, Integrative, Comp. Physiol. 43): R187-R195, 1998.


Nina Stachenfeld, PhD
Principal Investigator
Cheryl Leone, MS
Research Assistant II