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Analysis of monoamines, adenosine and GABA in tissues of the land snail Helix lucorum and lizard Agama stellio stellio during hibernation

Basile Michaelidis1,*, Nikolaos S. Loumbourdis2 and Elizabeth Kapaki3

1 Laboratory of Animal Physiology, Department of Zoology, Faculty of Biology, School of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece
2 Laboratory of Zoology, Department of Zoology, Faculty of Biology, School of Science, Aristotle University of Thessaloniki, Thessaloniki 54006, Greece
3 Department of Neurology, Athens National University, Aeginition Hospital, 74 Vas. Sophias Avenue, Athens 11528, Greece



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  		Fig. 1. Changes in monoamine and adenosine levels in the brain of hibernating snail H. lucorum. Values are means ± S.E.M., N=10 determinations on separate preparations from different animals. Asterisks indicate values that are significantly different from the control values. 5-HT, serotonin; DA, dopamine; 5-HIAA, 5-hydroxyindole-3-acetic acetic, HVA: homovanillic acid.

 


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  		Fig. 2. Changes in monoamine and adenosine levels in the heart of hibernating snail H. lucorum. Values are means ± S.E.M., N=10 determinations on separate preparations from different animals. Asterisks indicate values that are significantly different from the control values. 5-HT, serotonin; DA, dopamine.

 


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  		Fig. 3. Changes in monoamine, adenosine and GABA levels in the brain of hibernating lizard A. stellio stellio. Values are means ± S.E.M., N=10 determinations on separate preparations from different animals. Asterisks indicate values that are significantly different from the control values. 5-HT, serotonin; DA, dopamine; 5-HIAA, 5-hydroxyindole-3-acetic acetic; NE, norepinephrine; E, epinephrine.

 


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  		Fig. 4. Changes in monoamine and adenosine levels in the heart of the hibernating lizard A. stellio stellio. Values are means ± S.E.M., N=10 determinations on separate preparations from different animals. Asterisks indicate values that are significantly different form the control values. 5-HT, serotonin; DA, dopamine; NE, norepinephrine; E, epinephrine.

 


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  		Fig. 5. Changes in monoamine levels in blood of the hibernating lizard A. stellio stellio. Values are means ± S.E.M., N=10 determinations on separate preparations from different animals. Asterisks indicate values that are significantly different from the control values. 5-HT, serotonin; DA, dopamine; NE, norepinephrine; E, epinephrine.

 




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