The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
Time-Trend Analysis of Plasma Cortisol Concentrations in the Fetal Sheep in Relation to Parturition*
Abstract
Using a cortisol RIA carefully validated for specificity in fetal ovine plasma, we studied plasma cortisol time-trend changes in eight chronically catheterized sheep fetuses in the last 22 days of gestation before the spontaneous onset of labor. Best fit exponential type curves were drawn for each individual fetus to define the time before the onset of labor at which fetal plasma cortisol was rising at different rates. Fetal plasma cortisol increased at a rate of 0.5 ng ml-1 day-1 as early as 17.1 days before labor in one fetus, whereas the mean value for all eight fetuses occurred 11.8 +/- 1.0 (SEM) days before labor. The rate of increase doubled to 1.0 ng cortisol ml-1 day-1 as early as 14.4 days before labor in one fetus, whereas the mean value for all eight fetuses occurred 9.3 +/- 0.9 days before labor. These findings suggest that the regulatory mechanisms responsible for the prelabor increase in fetal cortisol production are activated earlier in gestation than we previously thought.
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“Multiple factors initiate parturition, including fetal cortisol, maternal drop in progesterone, oxytocin, prostaglandin F2α and other endocrine factors56–59.”
From Conditional loss of ERK1 and ERK2 results in abnormal placentation and delayed parturition in the mouse (2019) · cites this paper as [57]
Citations
Cites
The Mechanism of Initiation of Parturition in the Ewe
Liggins, G. C., Fairclough, R. J., Grieves, S. A., Kendall, J. Z., & Knox, B. S. (1973) · Elsevier eBooks · doi:10.1016/b978-0-12-571129-6.50007-5 · Cited by 509
FOETAL PLASMA CORTICOSTEROIDS AND THE INITIATION OF PARTURITION IN SHEEP
Bassett, J. M., & Thorburn, G. D. (1969) · Journal of Endocrinology · doi:10.1677/joe.0.0440285 · Cited by 268
PROLONGED GESTATION IN EWES AFTER FOETAL ADRENALECTOMY
Drost, M., & Holm, L. W. (1968) · Journal of Endocrinology · doi:10.1677/joe.0.0400293 · Cited by 100
Thomas, A. L., Krane, E. J., & Nathanielsz, P. W. (1978) · Endocrinology · doi:10.1210/endo-103-1-17 · Cited by 88
Self-citationFetal endocrinology: An experimental approach
Nathanielsz, P. W. (1976) · Medical Entomology and Zoology · Cited by 63
Self-citationStrott, C. A., SUNDEL, H., & Stahlman, M. T. (1974) · Endocrinology · doi:10.1210/endo-95-5-1327 · Cited by 57
Cortisol metabolism in the fetal and neonatal sheep.
Nathanielsz, P. W., Comline, R. S., Silver, M., & Rb, P. (1972) · PubMed · Cited by 54
Self-citationPITUITARY STALK‐SECTION AND SOME OF ITS EFFECTS ON ENDOCRINE FUNCTION IN THE FETAL LAMB
Nathanielsz, P. W., Abel, M. H., Bass, F., Krane, E. J., Thomas, A. L., & Liggins, G. C. (1978) · Quarterly Journal of Experimental Physiology and Cognate Medical Sciences · doi:10.1113/expphysiol.1978.sp002436 · Cited by 45
Self-citationBrown, E. H., Coghlan, J. P., Hardy, K. J., & Wintour, E. M. (1978) · European Journal of Endocrinology · doi:10.1530/acta.0.0880364 · Cited by 38
Cortisol turnover in the sheep foetus immediately prior to parturition.
Comline, R. S., Nathanielsz, P. W., Rb, P., & Silver, M. (1970) · PubMed · Cited by 31
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Endocrine and Paracrine Regulation of Birth at Term and Preterm*
Challis, J. R. G., Matthews, S. G., Gibb, W., & Lye, S. J. (2000) · Endocrine Reviews · doi:10.1210/edrv.21.5.0407 · Cited by 995
Maturation and Activation of Hypothalamic-Pituitary Adrenal Function in Fetal Sheep*
Challis, J. R. G., & Brooks, A. N. (1989) · Endocrine Reviews · doi:10.1210/edrv-10-2-182 · Cited by 257
Transfer of maternal psychosocial stress to the fetus
Rakers, F., Rupprecht, S., Dreiling, M., Bergmeier, C., Witte, O. W., & Schwab, M. G. (2017) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2017.02.019 · Cited by 257
Glucocorticoids: Mediators of vertebrate ontogenetic transitions
Wada, H. (2008) · General and Comparative Endocrinology · doi:10.1016/j.ygcen.2008.02.004 · Cited by 224
Braun, T., Challis, J. R., Newnham, J. P., & Sloboda, D. M. (2013) · Endocrine Reviews · doi:10.1210/er.2013-1012 · Cited by 196
Metadata
- Authors
- MAGYAR, D. M., FRIDSHAL, D., ELSNER, C. W., GLATZ, T., ELIOT, J., KLEIN, A. H., LOWE, K. C., BUSTER, J. E., & NATHANIELSZ, P. W.
- Affiliations
- University of California, Los Angeles (US)
- Venue
- Endocrinology
- Publisher
- The Endocrine Society
- Published
- 1980-07
- Volume
- 107
- Issue
- 1
- Pages
- 155-159
- ISSN
- 0013-7227 (ISSN-L)
- 1945-7170
- OpenAlex
- W2128801555
- Cited by
- 189
- References
- 16
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 2 · 2023: 4 · 2022: 3 · 2021: 1 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 3 · 2016: 4 · 2015: 5 · 2014: 2 · 2013: 5 · 2012: 1
- FWCI
- 10.56
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Endocrinology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Birth, Development, and Health
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Reproductive Physiology in Livestock
- Health Sciences › Medicine › Obstetrics and Gynecology › Preterm Birth and Chorioamnionitis
- Keywords
- childbirth, fetal sheep, gestation, labor onset, chronic catheterization
- MeSH terms
- Animals, Female, Fetal Blood, Gestational Age, Hydrocortisone, Pregnancy, Sheep
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