Endocrinology and Reproduction
X-ray micro analyses of cations (Na, K, Ca) and anions (S, P, Cl) in uterine secretions during blastocyst implantation in the rat
Article first published online: 10 MAY 2005
Copyright © 1985 Wiley-Liss, Inc., A Wiley Company
Journal of Experimental Zoology
Volume 234, Issue 3, pages 415–421, June 1985
How to Cite
Nilsson, B. O. and Ljung, L. (1985), X-ray micro analyses of cations (Na, K, Ca) and anions (S, P, Cl) in uterine secretions during blastocyst implantation in the rat. J. Exp. Zool., 234: 415–421. doi: 10.1002/jez.1402340309
- Issue published online: 10 MAY 2005
- Article first published online: 10 MAY 2005
The mass changes of sodium, potassium, and calcium ions in the rat uterine secretion at blastocyst delay, activation, and attachment have been estimated with X-ray microanalyses of samples of uterine secretions absorbed by small Sephadex beads. A quantification of the ions was attempted by using a standardized coat of gold on the beads as a reference element for normalization of the ion peaks and by fitting the normalized values into corresponding linear regression equations obtained from measurements of step-wise dilutions of a control rat serum.
The concentrations of sodium observed at delay, activation, and attachment were 117, 201, and 203 mEq/l, respectively, and those of potassium were 6, 18, and 19 mEq/l, respectively. Calcium values were about 2 mEq/l and decreased at attachment. Among the anions, only the chloride concentration increased at activation and attachment.