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Protein kinase A activity and NO are involved in the regulation of crucian carp (Carassius carassius) red blood cell osmotic fragility

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Abstract

Activation of the cAMP pathway by β-adrenergic stimulation and cGMP pathway by activation of guanylate cyclase substantially affects red blood cell (RBC) membrane properties in mammals. However, whether similar mechanisms are involved in RBC regulation of lower vertebrates, especially teleosts, is not elucidated yet. In this study, we evaluated the effects of adenylate cyclase activation by epinephrine and forskolin, guanylate cyclase activation by sodium nitroprusside, and the role of Na+/H+-exchanger in the changes of osmotic fragility and regulatory volume decrease (RVD) response in crucian carp RBCs. Western blot analysis of protein kinase A and protein kinase G substrate phosphorylation revealed that changes in osmotic fragility were regulated via the protein kinase A, but not protein kinase G signaling pathway. At the same time, the RVD response in crucian carp RBCs was not affected either by activation of adenylate or guanylate cyclase. Adenylate cyclase/protein kinase A activation significantly decreased RBC osmotic fragility, i.e., increased cell rigidity. Inhibition of Na+/H+-exchanger by amiloride had no effect on the epinephrine-mediated decrease of RBC osmotic fragility. NO donor SNP did not activate guanylate cyclase, however affected RBCs osmotic fragility by protein kinase G-independent mechanisms. Taken together, our data demonstrated that the cAMP/PKA signaling pathway and NO are involved in the regulation of crucian carp RBC osmotic fragility, but not in RVD response. The authors confirm that the study has no clinical trial.

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Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors would like to thank Dr. Anna V. Kutina, Sechenov Institute of Evolutionary Physiology and Biochemistry RAS for providing the Na+/H+-exchanger inhibitor amiloride.

Funding

The study of adenylate and guanylate cyclase activation effects on the osmotic fragility and regulatory volume decrease response in crucian carp RBCs was supported by the State Assignment of Ministry of Science and Higher Education of the Russian Federation (project no. AAAA-A18-118012290371–3 to A.A.Yu., S.J.S., K.A.I., M.I.V., G.S.). The study of Na+/H+-exchanger inhibition and NO effects on the osmotic fragility of crucian carp RBCs was funded by the State Assignment (state registration number N 121041400077–1 to A.A.Yu., K.E.S.).

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Contributions

Conceptualization: Stepan Gambaryan, Igor V. Mindukshev; Methodology: Igor V. Mindukshev; Formal analysis and investigation: Aleksandra Yu. Andreyeva; Julia S. Sudnitsyna, Ekaterina S. Kladchenko; Writing—original draft preparation: Aleksandra Yu. Andreyeva; Julia S. Sudnitsyna; Writing—review and editing: Stepan Gambaryan, Igor V. Mindukshev; Funding acquisition: Aleksander I. Krivchenko; Resources: Aleksander I. Krivchenko, Igor V. Mindukshev; Supervision: Stepan Gambaryan.

Corresponding author

Correspondence to Aleksandra Yu. Andreyeva.

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Ethical approval

This study was performed in line with the principles of the Declaration of Helsinki. Approval for studies including crucian carp species was granted by the Ethics Committee of Sechenov Institute of Evolutionary Physiology and Biochemistry (Study No. 4; January 13, 2020). Studies using human platelets were approved by the Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences (Study No.3–03; March 2, 2019).

Competing interests

The authors declare that they have no conflict of interest.

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Andreyeva, A.Y., Kladchenko, E.S., Sudnitsyna, J.S. et al. Protein kinase A activity and NO are involved in the regulation of crucian carp (Carassius carassius) red blood cell osmotic fragility. Fish Physiol Biochem 47, 1105–1117 (2021). https://doi.org/10.1007/s10695-021-00971-4

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  • DOI: https://doi.org/10.1007/s10695-021-00971-4

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