The Effect of Angiotensin on the Quality of In Vitro Produced (IVP) Sheep Embryos and Expression of Na+/K+/ATPase

en 26855730 The Effect of Angiotensin on the Quality of In Vitro Produced (IVP) Sheep Embryos and Expression of Na+/K+/ATPase Background: The presence of rennin-angiotensin components in mammalian ovaries and their involvement in ovarian physiology have been established. In the present study, effects of angiotensin II (Ang II) on sodium-potassium adenosine triphosphatase (Na+/K+/ATPase) expression and development of sheep embryos was evaluated. Methods: The abattoir-derived Cumulus Oocyte Complexes (COC) were randomly allocated into three experimental groups; group I) in vitro Maturation (IVM) of oocytes in the presence of Ang II followed by in vitro fertilization (IVF)/in vitro Culture (IVC) (IVM group), group II) IVM/IVF of oocytes followed by IVC wherein the embryos were exposed to Ang II on day 4 of IVC (D4 group), and  group III) IVM/IVF and IVC of oocytes without any angiotensin (Control). The blastocyst and hatching rates were recorded on days 6 to 8. Day 8 embryos were immunostained with primary and secondary antibodies against Na+/K+/ATPase α1 and β1 subunits. Results: Addition of Ang II during IVM and IVC significantly increased the hatching rate of blastocysts on day 8 compared to the control. The trophectoderm and total blastocyst cells’ numbers were significantly increased by addition of Ang II to the IVM and IVC media, though the expression of Na+/K+/ATPase α1 and β1 subunits were positively influenced by the addition of Ang II on day 4 (D4 group). Conclusion: In conclusion, it seems Ang II through positive effects on embryos, expressed as the greater hatching rate and blastocyst cell number, could increase the sheep embryo developmental rate. These improvements might be partly related to the greater expression of Na+/K+/ATPase α1 and β1 subunits when Ang II was added during IVC. Angiotensin II, Development, Embryo, Expression, Na+/K+/ATPase, Sheep 9 15 https://www.ajmb.org/En/Article.aspx?id=227 https://www.ajmb.org/PDF/En/FullText/227.pdf Mohammad MehdiNaderiReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran334SaraBorjian BoroujeniReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran337AliSarvariReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran335BanafshehHeidariReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran503Mohammad MehdiAkhondiReproductive Biotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran13Amir-HassanZarnaniReproductive Immunology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran7AbolfazlShiraziResearch Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran82