THE ROLE OF ELECTROLYTES OF THE ENDOMETRIUM AND UTERINE FLUID DURING DELAYED IMPLANTATION IN RATS

1973 ◽  
Vol 59 (3) ◽  
pp. 461-464 ◽  
Author(s):  
B. S. SETTY ◽  
MAN MOHAN SINGH ◽  
S. R. CHOWDHURY ◽  
AMIYA B. KAR
Keyword(s):  
Electrolyte Concentration ◽  
Delayed Implantation ◽  
Uterine Fluid ◽  
Sodium And Potassium

SUMMARY Sodium and potassium levels were determined in the rat endometrium and uterine washings during normal and 'delayed' implantation. Both endometrium and uterine washings of normal rats differed from those of 'delayed' animals in their electrolyte concentrations. A dose of oestradiol dipropionate (1 μg/rat) capable of inducing implantation in 'delayed' rats (ovariectomized and maintained on progesterone) did not evoke any significant changes in electrolyte concentration of either the endometrium or uterine washings. These findings are discussed in the light of a hypothesis regarding delayed implantation in rats.

THE EFFECTS OF OESTROGEN AND PROGESTERONE ON THE SODIUM AND POTASSIUM CONCENTRATIONS OF RAT UTERINE FLUID

1970 ◽  
Vol 47 (3) ◽  
pp. 309-319 ◽  
Author(s):  
C. A. B. CLEMETSON ◽  
V. R. MALLIKARJUNESWARA ◽  
M. M. MOSHFEGHI ◽  
J. J. CARR ◽  
J. H. WILDS
Keyword(s):  
Membrane Potential ◽  
Potassium Concentration ◽  
Ovarian Hormones ◽  
Pronounced Change ◽  
Sodium Potassium ◽  
Delayed Implantation ◽  
Uterine Fluid ◽  
Sodium And Potassium

SUMMARY Studies of the electrolyte concentrations of uterine fluid samples from spayed rats, after injection of ovarian hormones, showed a much higher potassium concentration after treatment with oestrogen (42·3 m-equiv./1.) than with progesterone (20·8 m-equiv./1.). There was an even more pronounced change in the sodium: potassium ratio, which fell from 7·3 to 1 with progesterone to 2·5 to 1 with oestrogen. These findings are supported by recalculation of the results of Heap & Lamming (1962). It is suggested that these changes in the Na+ and K+ concentrations of uterine fluid produce changes in the membrane potential of the endometrium which could account for delayed implantation of the negatively charged blastocyst under progesterone dominance and implantation under oestrogen dominance.

scholarly journals Electroreduction of Bi(III) ions in the aspect of expanding the “cap-pair” effect: the role of the nanosized active complexes

2021 ◽  
Author(s):  
Agnieszka Nosal-Wiercińska ◽  
Marlena Martyna ◽  
Sławomira Skrzypek ◽  
Anna Szabelska ◽  
Małgorzata Wiśniewska
Keyword(s):  
Electrolyte Concentration ◽  
Supporting Electrolyte ◽  
Acceleration Process ◽  
Organic Substances ◽  
Effect Mechanism ◽  
Solution Interface

AbstractThe paper discusses the electroreduction of Bi(III) ions in the aspect of expanding the “cap-pair” effect.The “cap-pair” rule is associated with the acceleration of the electrode’s processes by organic substances. The interpretation of the “cap-pair” effect mechanism was expanded to include the effect of supporting electrolyte concentration on the acceleration process and the type of electrochemical active as well as used protonated organic substances. It has also been shown that the phenomena occurring at the electrode/solution interface can influence a change in the dynamics of the electrode’s process according to the “cap-pair” rule.

Potentiometric methods in routine sodium and potassium measurements

2017 ◽  
Vol 53 (3) ◽  
pp. 185-190
Author(s):  
Ewelina Kmin ◽  
Dagna Bobilewicz
Keyword(s):  
Indirect Method ◽  
Clinical Interpretation ◽  
The Real ◽  
Stable Particles ◽  
Sodium And Potassium ◽  
Interpretation Of Results

Because of important role of sodium and potassium in maintenance of homeostasis the interpretation of their concentration should require special attention. In routine two potentiometric methods are used; direct (undiluted samples) and indirect (diluted samples). Results obtained by indirect method reflect the real status in case of physiological proportion of plasma water and stable particles, otherwise (lipemia, hiperproteinemia, alcoholemia) the results are falsely decreased leading particularly to pseudohiponatremia and pseudonormonatremia, what should be considered in clinical interpretation of results.

scholarly journals Maternal Recognition of Pregnancy in the Horse: Are MicroRNAs the Secret Messengers?

2020 ◽  
Vol 21 (2) ◽  
pp. 419 ◽  
Author(s):  
Katrien Smits ◽  
Yannick Gansemans ◽  
Laurentijn Tilleman ◽  
Filip Van Nieuwerburgh ◽  
Margot Van De Velde ◽  
...  
Keyword(s):  
Differential Expression ◽  
Micro Rna ◽  
Steroid Synthesis ◽  
Tissue Samples ◽  
Strong Basis ◽  
Embryonic Tissues ◽  
Uterine Fluid ◽  
Maternal Recognition Of Pregnancy ◽  
And Control

The signal for maternal recognition of pregnancy (MRP) has still not been identified in the horse. High-throughput molecular biology at the embryo–maternal interface has substantially contributed to the knowledge on pathways affected during MRP, but an integrated study in which proteomics, transcriptomics and miRNA expression can be linked directly is currently lacking. The aim of this study was to provide such analysis. Endometrial biopsies, uterine fluid, embryonic tissues, and yolk sac fluid were collected 13 days after ovulation during pregnant and control cycles from the same mares. Micro-RNA-Sequencing was performed on all collected samples, mRNA-Sequencing on the same tissue samples and mass spectrometry was conducted previously on the same fluid samples. Differential expression of miRNA, mRNA and proteins showed high conformity with literature and confirmed involvement in pregnancy establishment, embryo quality, steroid synthesis and prostaglandin regulation, but the link between differential miRNAs and their targets was limited and did not indicate the identity of an unequivocal signal for MRP in the horse. Differential expression at the embryo–maternal interface was prominent, highlighting a potential role of miRNAs in embryo–maternal communication during early pregnancy in the horse. These data provide a strong basis for future targeted studies.

Poorly Soluble 2,6-Dimethoxy-9,10-anthraquinone Cathode for Lithium-Ion Batteries: The Role of Electrolyte Concentration

2020 ◽  
Vol 12 (6) ◽  
pp. 7179-7185 ◽  
Author(s):  
Jixing Yang ◽  
Zhuanping Wang ◽  
Yeqing Shi ◽  
Pengfei Sun ◽  
Yunhua Xu
Keyword(s):  
Lithium Ion Batteries ◽  
Electrolyte Concentration ◽  
Lithium Ion ◽  
Poorly Soluble
Sign in / Sign up

Export Citation Format

Share Document