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Krams I, Trakimas G, Kecko S, Elferts D, Krams R, Luoto S, Rantala MJ, Mänd M, Kuusik A, Kekäläinen J, Jõers P, Kortet R, Krama T. Linking organismal growth, coping styles, stress reactivity, and metabolism via responses against a selective serotonin reuptake inhibitor in an insect. Sci Rep 2018; 8:8599. [PMID: 29872133 PMCID: PMC5988682 DOI: 10.1038/s41598-018-26722-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 05/15/2018] [Indexed: 01/21/2023] Open
Abstract
Evidence suggests that brain serotonin (5-HT) is one of the central mediators of different types of animal personality. We tested this assumption in field crickets Gryllus integer using a selective serotonin reuptake inhibitor (SSRI). Crickets were selected for slow and rapid development and tested for their coping styles under non-stressful conditions (time spent exploring a novel object). Resting metabolic rate, maximum metabolic rate and latency to resume activity were measured under stressful conditions (stress reactivity). Measurements were taken (i) before and (ii) during the SSRI treatment. Before the SSRI treatment, a strong negative correlation was observed between coping style and stress reactivity, which suggests the existence of a behavioral syndrome. After the SSRI treatment, the syndrome was no longer evident. The results of this study show that 5-HT may be involved in regulating behavior not only along a stress reactivity gradient but also along a coping styles axis. The relationship between personality and the strength and direction of 5-HT treatment on observed behaviors indicates trait-like individual differences in 5-HT signaling. Overall, these findings do not support recent ideas arising from the pace-of-life syndrome (POLS) hypothesis, which predict higher exploration and metabolic rates in rapidly developing bold animals.
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Affiliation(s)
- Indrikis Krams
- Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia.
- Department of Zoology and Animal Ecology, Faculty of Biology, University of Latvia, Rīga, Latvia.
- University of Tennessee, Department of Psychology, Knoxville, USA.
| | - Giedrius Trakimas
- Institute of Biosciences, Vilnius University, Vilnius, Lithuania
- Department of Biotechnology, Institute of Life Sciences and Technology, Daugavpils University, Daugavpils, Latvia
| | - Sanita Kecko
- Department of Biotechnology, Institute of Life Sciences and Technology, Daugavpils University, Daugavpils, Latvia
| | - Didzis Elferts
- Department of Botany and Ecology, Faculty of Biology, University of Latvia, Rīga, Latvia
| | - Ronalds Krams
- Department of Biotechnology, Institute of Life Sciences and Technology, Daugavpils University, Daugavpils, Latvia
| | - Severi Luoto
- English, Drama and Writing Studies, University of Auckland, Auckland, New Zealand
- School of Psychology, University of Auckland, Auckland, New Zealand
| | - Markus J Rantala
- Department of Biology & Turku Brain and Mind Centre, University of Turku, Turku, Finland
| | - Marika Mänd
- Department of Plant Protection, Institute of Agricultural and Environmental Sciences, Estonian University of Life Science, Tartu, Estonia
| | - Aare Kuusik
- Department of Plant Protection, Institute of Agricultural and Environmental Sciences, Estonian University of Life Science, Tartu, Estonia
| | - Jukka Kekäläinen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
| | - Priit Jõers
- Insttute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Raine Kortet
- Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
| | - Tatjana Krama
- Department of Biotechnology, Institute of Life Sciences and Technology, Daugavpils University, Daugavpils, Latvia
- Department of Plant Protection, Institute of Agricultural and Environmental Sciences, Estonian University of Life Science, Tartu, Estonia
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Diniz CR, Rodrigues M, Casarotto PC, Pereira VS, Crestani CC, Joca SR. Monoamine involvement in the antidepressant-like effect induced by P2 blockade. Brain Res 2017; 1676:19-27. [DOI: 10.1016/j.brainres.2017.09.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 09/06/2017] [Accepted: 09/08/2017] [Indexed: 12/16/2022]
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Schmitz JPJ, Groenendaal W, Wessels B, Wiseman RW, Hilbers PAJ, Nicolay K, Prompers JJ, Jeneson JAL, van Riel NAW. Combined in vivo and in silico investigations of activation of glycolysis in contracting skeletal muscle. Am J Physiol Cell Physiol 2012; 304:C180-93. [PMID: 23114964 DOI: 10.1152/ajpcell.00101.2012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The hypothesis was tested that the variation of in vivo glycolytic flux with contraction frequency in skeletal muscle can be qualitatively and quantitatively explained by calcium-calmodulin activation of phosphofructokinase (PFK-1). Ischemic rat tibialis anterior muscle was electrically stimulated at frequencies between 0 and 80 Hz to covary the ATP turnover rate and calcium concentration in the tissue. Estimates of in vivo glycolytic rates and cellular free energetic states were derived from dynamic changes in intramuscular pH and phosphocreatine content, respectively, determined by phosphorus magnetic resonance spectroscopy ((31)P-MRS). Computational modeling was applied to relate these empirical observations to understanding of the biochemistry of muscle glycolysis. Hereto, the kinetic model of PFK activity in a previously reported mathematical model of the glycolytic pathway (Vinnakota KC, Rusk J, Palmer L, Shankland E, Kushmerick MJ. J Physiol 588: 1961-1983, 2010) was adapted to contain a calcium-calmodulin binding sensitivity. The two main results were introduction of regulation of PFK-1 activity by binding of a calcium-calmodulin complex in combination with activation by increased concentrations of AMP and ADP was essential to qualitatively and quantitatively explain the experimental observations. Secondly, the model predicted that shutdown of glycolytic ATP production flux in muscle postexercise may lag behind deactivation of PFK-1 (timescales: 5-10 s vs. 100-200 ms, respectively) as a result of accumulation of glycolytic intermediates downstream of PFK during contractions.
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Affiliation(s)
- J P J Schmitz
- Computational Biology, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.
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Vairetti M, Feletti F, Battaglia A, Pamparana F, Canonico PL, Richelmi P, Bertè F. Haloperidol-induced changes in glutathione and energy metabolism: effect of nicergoline. Eur J Pharmacol 1999; 367:67-72. [PMID: 10082266 DOI: 10.1016/s0014-2999(98)00925-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The aim of this study was to evaluate the possible effects of nicergoline, a semisynthetic ergot derivative, on the biochemical changes observed during chronic treatment with haloperidol in male Sprague-Dawley rats. Chronic treatment with haloperidol induced a significant decrease in the cellular glutathione (GSH) content in selected areas of the brain (cerebellum, striatum and cortex) and in the liver. Prolonged nicergoline administration was able to antagonize the haloperidol-induced GSH decrease, maintaining the GSH concentration at levels comparable to those observed in the control group. Analysis of the energy charge revealed changes similar to those observed for GSH: haloperidol induced a significant decrease in ATP and energy charge that was completely reversed by repeated nicergoline administration. In conclusion, chronic treatment with the classical antipsychotic haloperidol induces profound biochemical changes in the brain and in the liver. Nicergoline treatment is able to counteract the haloperidol-induced decrease in GSH levels and energy charge, suggesting a potential role of the drug in the treatment of neuroleptic-induced side effects.
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Affiliation(s)
- M Vairetti
- Institute of Pharmacology II, University of Pavia, Italy
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Gilboa-Garber N, Kirstein-Segal R. Structural specificity of serotonin effect on human erythrocyte fragility. Mol Genet Metab 1998; 64:283-5. [PMID: 9758719 DOI: 10.1006/mgme.1998.2703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Serotonin, a neurotransmitter and vasoconstrictor, affects various cell properties. We have analyzed the importance of its structural components for its extensive effect on human erythrocyte fragility, using its O- and N-linked derivatives and related compounds. The results presented in this communication indicate that the amino group, free of adjacent negative charges, and the hydroxyl group are indispensable for the serotonin-induced increase in red blood cell fragility.
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Affiliation(s)
- N Gilboa-Garber
- Department of Life Sciences, Bar-Ilan University, Ramat-Gan, 52900, Israel
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Assouline-Cohen M, Ben-Porat H, Beitner R. Activation of membrane skeleton-bound phosphofructokinase in erythrocytes induced by serotonin. Mol Genet Metab 1998; 63:235-8. [PMID: 9608547 DOI: 10.1006/mgme.1997.2673] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We show here that serotonin, both in vivo and in vitro, induced a marked activation of phosphofructokinase, the rate-limiting enzyme in glycolysis, in the membrane-skeleton fraction from erythrocytes. Concomitantly, the hormone induced a striking increase in lactate content, reflecting stimulation of glycolysis. The enzyme's activity in the cytosolic (soluble) fraction remained unchanged. These results suggest a defense mechanism in the erythrocytes against the damaging effects of serotonin, whose concentration in plasma increases in many diseases and is implicated as playing an important role in circulation disturbances.
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Ashkenazy-Shahar M, Beitner R. Serotonin decreases cytoskeletal and cytosolic glycolytic enzymes and the levels of ATP and glucose 1,6-bisphosphate in skin, which is prevented by the calmodulin antagonists thioridazine and clotrimazole. BIOCHEMICAL AND MOLECULAR MEDICINE 1997; 60:187-93. [PMID: 9169102 DOI: 10.1006/bmme.1996.2562] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Serotonin (5-hydroxytryptamine) is believed to play a pathogenic role in skin damage and various skin abnormalities; however, its mechanism of action remains unknown. We show here that intradermal injection of serotonin in rats induced a marked reduction in the activities of the glycolytic enzymes, phosphofructokinase (EC 2.7.1.11) and aldolase (EC 4.1.2.13), in both the cytoskeletal and cytosolic fractions from skin. Serotonin also decreased the levels of glucose 1,6-bisphosphate in skin, the powerful regulator of glucose metabolism. These serotonin-induced changes were accompanied by a marked decrease in ATP content in skin. All these pathological changes induced by serotonin were prevented by treatment with two structurally different calmodulin antagonists: thioridazine, an antipsychotic phenothiazine, or clotrimazole, from the group of the antifungal azole derivatives that were recently recognized as calmodulin antagonists. The present results suggest that calmodulin antagonists may be effective drugs in the treatment of skin damage under various pathological conditions and diseases in which serotonin levels are increased.
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Glass-Marmor L, Chen-Zion M, Beitner R. Effects of carbamylcholine and pyridostigmine on cytoskeleton-bound and cytosolic phosphofructokinase and ATP levels in different rat tissues. GENERAL PHARMACOLOGY 1996; 27:1241-6. [PMID: 8981075 DOI: 10.1016/s0306-3623(96)00048-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
1. The effects of carbamylcholine (CaCh) (acetylcholine agonist) and pyridostigmine (Pyr) (acetylcholinesterase inhibitor), on the activity of cytoskeleton-bound and cytosolic phosphofructokinase (PFK), the rate-limiting enzyme in glycolysis, and ATP levels, were studied in rat tibialis anterior (TA) muscle, heart, and brain. 2. In the TA muscle, a marked (about three-fold) increase in the allosteric activity of cytosolic (soluble) PFK was found, 3-5 min following the injection of CaCh or Pyr. The intracellular distribution of the enzyme was not affected by both drugs. Stimulation of glycolysis in this muscle was also expressed by a significant increase in the concentrations of glycolytic intermediates and lactate. Glucose 1,6-bisphosphate (Glc-1,6-P2) levels were unchanged, whereas fructose-2,6-bisphosphate (Fru-2,6-P2) was increased. Glycogenolysis was also stimulated, as deduced from the decrease in glycogen content. The stimulation of glycolysis, induced by both drugs, was accompanied by an increase in ATP level in the TA muscle. 3. In contrast to the stimulatory action of CaCh or Pyr on glycolysis in the TA muscle, both drugs had no effect on cytosolic and cytoskeletal PFK in heart and brain. However, ATP content in both heart and brain was markedly reduced by these drugs, most probably due to their reported harmful effects on mitochondrial function, leading to tissue damage. 4. Electron microscopic studies of TA muscle and heart from rats treated with CaCh or Pyr, revealed severe damage of heart but no harmful effects on TA muscle, which is a muscle with high glycolytic and low oxidative capacity. The present experiments suggest that the accelerated glycolysis in this muscle induced by both drugs, supplies ATP, thus preventing muscle damage.
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Affiliation(s)
- L Glass-Marmor
- Department of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
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