Abstract
The serotonin syndrome in humans is caused by severe side effects of drugs that either increase the extracellular serotonin (5-HT) concentration or are agonists at 5-HT receptors. The symptoms include mental state alterations (e.g., agitation, confusion), neuromuscular excitation (e.g., myoclonus, tremor), and autonomic dysregulation (e.g., hyperthermia, tachycardia). Similar symptoms can also be induced in rodents, especially in rats, whereas in mice the serotonin syndrome is not as clearly defined. Based on current literature and our own experimental studies in mice we will discuss in this chapter the validity of the murine model for the serotonin syndrome with special emphasis on the contribution of different 5-HT receptor subtypes focusing on the 5-HT1A receptor. We will provide a field manual to study changes in behavior and in body temperature. Behavioral changes characteristic for the serotonin syndrome should be assessed simultaneously after application of drugs consistently affecting the serotonergic system. A change in body temperature constitutes an important vegetative endpoint which can also be affected by drugs interfering with 5-HT metabolism and/or acting as 5-HT receptor agonists. The radiotelemetry technique allows to continuously monitor dose- and time-related drug effects without handling the animal. In general, the murine model for the serotonin syndrome is a valuable tool to study serotonin-induced hyperactivity for both basic and preclinical research in order to identify drugs or drug combinations with potential risk to induce a serotonin syndrome in man.
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References
Boyer EW, Shannon M (2005) The serotonin syndrome. N Engl J Med 352:1112–1120
Loizou LA (1970) Uptake of monoamines into central neurones and the blood-brain barrier in the infant rat. Br J Pharmacol 40:800–813
Lopez-Munoz F, Alamo C (2009) Monoaminergic neurotransmission: the history of the discovery of antidepressants from 1950s until today. Curr Pharm Des 15:1563–1586
Bogdanski DF, Weissbach H, Udenfriend S (1958) Pharmacological studies with the serotonin precursor, 5-hydroxytryptophan. J Pharmacol Exp Ther 122:182–194
Page IH (1958) Serotonin (5-hydroxytryptamine); the last four years. Physiol Rev 38:277–335
Jacobs BL (1974) Effect of two dopamine receptor blockers on a serotonin-mediated behavioral syndrome in rats. Eur J Pharmacol 27:363–366
Hwang EC, Van Woert MH (1979) Behavioral and biochemical actions of p-chlorophenylethylamine (p-CPEA) in mice. Life Sci 24:595–601
Kalueff AV, LaPorte JL, Murphy DL (2008) Perspectives on genetic animal models of serotonin toxicity. Neurochem Int 52:649–658
Haberzettl R, Bert B, Fink H, Fox MA (2013) Animal models of the serotonin syndrome: a systematic review. Behav Brain Res 256:328–345
Bert B, Fink H, Hortnagl H, Veh RW, Davies B, Theuring F, Kusserow H (2006) Mice over-expressing the 5-HT(1A) receptor in cortex and dentate gyrus display exaggerated locomotor and hypothermic response to 8-OH-DPAT. Behav Brain Res 167:328–341
Blanchard RJ, Griebel G, Guardiola-Lemaitre B, Brush MM, Lee J, Blanchard DC (1997) An ethopharmacological analysis of selective activation of 5-HT1A receptors: the mouse 5-HT1A syndrome. Pharmacol Biochem Behav 57:897–908
Diaz SL, Maroteaux L (2011) Implication of 5-HT(2B) receptors in the serotonin syndrome. Neuropharmacology 61:495–502
Fox MA, Jensen CL, Gallagher PS, Murphy DL (2007) Receptor mediation of exaggerated responses to serotonin-enhancing drugs in serotonin transporter (SERT)-deficient mice. Neuropharmacology 53:643–656
Yamada J, Sugimoto Y, Horisaka K (1988) The behavioural effects of 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT) in mice. Eur J Pharmacol 154:299–304
Verge D, Daval G, Marcinkiewicz M, Patey A, el Mestikawy S, Gozlan H, Hamon M (1986) Quantitative autoradiography of multiple 5-HT1 receptor subtypes in the brain of control or 5,7-dihydroxytryptamine-treated rats. J Neurosci 6:3474–3482
Blier P, Lista A, De Montigny C (1993) Differential properties of pre- and postsynaptic 5-hydroxytryptamine1A receptors in the dorsal raphe and hippocampus: I. Effect of spiperone. J Pharmacol Exp Ther 265:7–15
Smith LM, Peroutka SJ (1986) Differential effects of 5-hydroxytryptamine1a selective drugs on the 5-HT behavioral syndrome. Pharmacol Biochem Behav 24:1513–1519
Bill DJ, Knight M, Forster EA, Fletcher A (1991) Direct evidence for an important species difference in the mechanism of 8-OH-DPAT-induced hypothermia. Br J Pharmacol 103:1857–1864
Hedlund PB, Kelly L, Mazur C, Lovenberg T, Sutcliffe JG, Bonaventure P (2004) 8-OH-DPAT acts on both 5-HT1A and 5-HT7 receptors to induce hypothermia in rodents. Eur J Pharmacol 487:125–132
Fox MA, French HT, LaPorte JL, Blackler AR, Murphy DL (2010) The serotonin 5-HT(2A) receptor agonist TCB-2: a behavioral and neurophysiological analysis. Psychopharmacology (Berl) 212:13–23
Kalueff AV, Fox MA, Gallagher PS, Murphy DL (2007) Hypolocomotion, anxiety and serotonin syndrome-like behavior contribute to the complex phenotype of serotonin transporter knockout mice. Genes Brain Behav 6:389–400
Fox MA, Panessiti MG, Moya PR, Tolliver TJ, Chen K, Shih JC, Murphy DL (2013) Mutations in monoamine oxidase (MAO) genes in mice lead to hypersensitivity to serotonin-enhancing drugs: implications for drug side effects in humans. Pharmacogenomics J 13:551–557
Fox MA, Jensen CL, French HT, Stein AR, Huang SJ, Tolliver TJ, Murphy DL (2008) Neurochemical, behavioral, and physiological effects of pharmacologically enhanced serotonin levels in serotonin transporter (SERT)-deficient mice. Psychopharmacology (Berl) 201:203–218
Ma Z, Zhang G, Jenney C, Krishnamoorthy S, Tao R (2008) Characterization of serotonin-toxicity syndrome (toxidrome) elicited by 5-hydroxy-l-tryptophan in clorgyline-pretreated rats. Eur J Pharmacol 588:198–206
Zhang G, Krishnamoorthy S, Ma Z, Vukovich NP, Huang X, Tao R (2009) Assessment of 5-hydroxytryptamine efflux in rat brain during a mild, moderate and severe serotonin-toxicity syndrome. Eur J Pharmacol 615:66–75
Dunkley EJ, Isbister GK, Sibbritt D, Dawson AH, Whyte IM (2003) The Hunter Serotonin Toxicity Criteria: simple and accurate diagnostic decision rules for serotonin toxicity. Q J Med 96:635–642
Sternbach H (1991) The serotonin syndrome. Am J Psychiatry 148:705–713
Adriaan Bouwknecht J, Olivier B, Paylor RE (2007) The stress-induced hyperthermia paradigm as a physiological animal model for anxiety: a review of pharmacological and genetic studies in the mouse. Neurosci Biobehav Rev 31:41–59
van Bogaert MJ, Groenink L, Oosting RS, Westphal KG, van der Gugten J, Olivier B (2006) Mouse strain differences in autonomic responses to stress. Genes Brain Behav 5:139–149
Clement JG, Mills P, Brockway B (1989) Use of telemetry to record body temperature and activity in mice. J Pharmacol Methods 21:129–140
Zuther P, Gorbey S, Lemmer B (2009) Chronos-Fit 1.06. http://www.ma.uni-heidelberg.de/inst/phar/lehre/chrono.html
Goecke JC, Awad H, Lawson JC, Boivin GP (2005) Evaluating postoperative analgesics in mice using telemetry. Comp Med 55:37–44
Hayes KE, Raucci JA Jr, Gades NM, Toth LA (2000) An evaluation of analgesic regimens for abdominal surgery in mice. Contemp Top Lab Anim Sci 39:18–23
Perry KW, Fuller RW (1989) Determination of brain concentrations of 8-hydroxy-2-(di-n-propylamino)tetralin by liquid chromatography with electrochemical detection. Biochem Pharmacol 38:3169–3173
Hirano K, Kimura R, Sugimoto Y, Yamada J, Uchida S, Kato Y, Hashimoto H, Yamada S (2005) Relationship between brain serotonin transporter binding, plasma concentration and behavioural effect of selective serotonin reuptake inhibitors. Br J Pharmacol 144:695–702
Saadat KS, O’Shea E, Colado MI, Elliott JM, Green AR (2005) The role of 5-HT in the impairment of thermoregulation observed in rats administered MDMA (‘ecstasy’) when housed at high ambient temperature. Psychopharmacology (Berl) 179:884–890
Ogren SO, Carlsson S, Bartfai T (1985) Serotonergic potentiation of muscarinic agonist evoked tremor and salivation in rat and mouse. Psychopharmacology (Berl) 86:258–264
Haberzettl R, Fink H, Bert B (2014) The murine serotonin syndrome - Evaluation of responses to 5-HT-enhancing drugs in NMRI mice. Behav Brain Res doi: 10.1016/j.bbr.2014.04.033.
Haberzettl R, Fink H, Bert B (2014) Role of 5-HT1A- and 5-HT2A receptors for the murine model of the serotonin syndrome. J Pharmacol Toxicol Methods 70(2):129–33
Acknowledgments
Robert Haberzettl received financial support from the Elsa-Neumann-Doctoral-Fellowship from the state Berlin, Germany.
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Haberzettl, R., Fink, H., Dietze, S., Bert, B. (2015). The Murine Serotonin Syndrome and the 5-HT1A Receptor: Behavioral Effects and Hypothermia. In: Blenau, W., Baumann, A. (eds) Serotonin Receptor Technologies. Neuromethods, vol 95. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2187-4_5
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DOI: https://doi.org/10.1007/978-1-4939-2187-4_5
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