1. a Institute of Pathophysiology, Faculty of Medicine , Comenius University , Bratislava, Slovak Republic
2. b Department of Molecular Biology, Faculty of Natural Sciences , Comenius University , Bratislava, Slovak Republic
3. c Institute of Physiology, Faculty of Medicine , Comenius University , Bratislava, Slovak Republic
4. d National Institute of Endocrinology and Diabetology , L'ubochňa, Slovak Republic
5. e Department of Zoology, Faculty of Natural Sciences , Comenius University , Bratislava, Slovak Republic