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Nakagawa H, Ishiwata T. Effect of short- and long-term heat exposure on brain monoamines and emotional behavior in mice and rats. J Therm Biol 2021; 99:102923. [PMID: 34420602 DOI: 10.1016/j.jtherbio.2021.102923] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/26/2021] [Accepted: 03/27/2021] [Indexed: 10/21/2022]
Abstract
Heat exposure affects several physiological, neuronal, and emotional functions. Notably, monoaminergic neurotransmitters in the brain such as noradrenaline, dopamine, and serotonin, which regulate several basic physiological functions, such as thermoregulation, food intake, and energy balance, are affected by heat exposure and heat acclimation. Furthermore, cognition and emotional states are also affected by heat exposure and changes in brain monoamine levels. Short-term heat exposure has been reported to increase anxiety in some behavioral tests. In contrast, there is a possibility that long-term heat exposure decreases anxiety due to heat acclimation. These changes might be due to adaptation of the core body temperature and/or brain monoamine levels by heat exposure. In this review, we first outline the changes in brain monoamine levels and thereafter focus on changes in emotional behavior due to heat exposure and heat acclimation. Finally, we describe the relationships between emotional behavior and brain monoamine levels during heat acclimation.
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Affiliation(s)
- Hikaru Nakagawa
- Graduate School of Community & Human Services, Rikkyo University, 1-2-26 Kitano, Niiza, Saitama, 352-8558, Japan; Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda, Tokyo, 102-0083, Japan.
| | - Takayuki Ishiwata
- Graduate School of Community & Human Services, Rikkyo University, 1-2-26 Kitano, Niiza, Saitama, 352-8558, Japan
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Nakagawa H, Matsunaga D, Ishiwata T. Effect of heat acclimation on anxiety-like behavior of rats in an open field. J Therm Biol 2020; 87:102458. [DOI: 10.1016/j.jtherbio.2019.102458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 11/02/2019] [Accepted: 11/18/2019] [Indexed: 12/20/2022]
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de Freitas RL, Medeiros P, da Silva JA, de Oliveira RC, de Oliveira R, Ullah F, Khan AU, Coimbra NC. The μ1-opioid receptor and 5-HT2A- and 5HT2C-serotonergic receptors of the locus coeruleus are critical in elaborating hypoalgesia induced by tonic and tonic–clonic seizures. Neuroscience 2016; 336:133-145. [DOI: 10.1016/j.neuroscience.2016.08.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 08/21/2016] [Accepted: 08/23/2016] [Indexed: 01/25/2023]
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Nakagawa H, Matsumura T, Suzuki K, Ninomiya C, Ishiwata T. Changes of brain monoamine levels and physiological indexes during heat acclimation in rats. J Therm Biol 2016; 58:15-22. [PMID: 27157329 DOI: 10.1016/j.jtherbio.2016.03.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/20/2016] [Accepted: 03/21/2016] [Indexed: 10/22/2022]
Abstract
Brain monoamines, such as noradrenaline (NA), dopamine (DA), and serotonin (5-HT), regulate many important physiological functions including thermoregulation. The purpose of this study was to clarify changes in NA, DA, and 5-HT levels in several brain regions in response to heat acclimation while also recording body temperature (Tb), heart rate (HR), and locomotor activity (Act). Rats were exposed to a heated environment (32°C) for 3h (3H), 1 day (1D), 7 days, 14 days (14D), 21 days, or 28 days (28D). After heat exposure, each of the following brain regions were immediately extracted and homogenized: the caudate putamen (CPu), preoptic area (PO), dorsomedial hypothalamus (DMH), frontal cortex (FC), and hippocampus (Hip). NA, DA, and 5-HT levels in the extract were measured by high performance liquid chromatography. Although Tb increased immediately after heat exposure, it decreased about 14D later. HR was maintained at a low level throughout heat exposure, and Act tended to increase near the end of heat exposure. After 3H, we observed a marked increase in NA level in the CPu. Although this response vanished after 1D, the level increased again after 28D. DA level in the CPu decreased significantly from 1D to 28D. 5-HT level in the PO and DMH decreased from 1D to 14D. It returned to control levels after 28D with increment of DA level. 5-HT level in the FC decreased at the start of heat exposure, but recovered after 28D; a time point at which DA level also increased. Monoamine levels in the Hip were unchanged after early heat exposure, but both 5-HT and DA levels increased after 28D. These results provide definitive evidence of changes in monoamines in individual brain regions involved in thermoregulation and behavioral, cognitive, and memory function during both acute and chronic heat exposure.
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Affiliation(s)
- Hikaru Nakagawa
- Graduate School of Community and Human Services, Rikkyo University, 1-2-26 Kitano, Niiza, Saitama 352-8558, Japan
| | - Takeru Matsumura
- Graduate School of Community and Human Services, Rikkyo University, 1-2-26 Kitano, Niiza, Saitama 352-8558, Japan
| | - Kota Suzuki
- Graduate School of Community and Human Services, Rikkyo University, 1-2-26 Kitano, Niiza, Saitama 352-8558, Japan
| | - Chisa Ninomiya
- Graduate School of Community and Human Services, Rikkyo University, 1-2-26 Kitano, Niiza, Saitama 352-8558, Japan
| | - Takayuki Ishiwata
- Graduate School of Community and Human Services, Rikkyo University, 1-2-26 Kitano, Niiza, Saitama 352-8558, Japan.
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Zhang Y, Qu H, Zhou Y, Wang Y, Zhang D, Yang X, Yang C, Xu M. The involvement of norepinephrine in pain modulation in the nucleus accumbens of morphine-dependent rats. Neurosci Lett 2015; 585:6-11. [DOI: 10.1016/j.neulet.2014.11.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 11/12/2014] [Accepted: 11/13/2014] [Indexed: 11/29/2022]
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Zhang Y, Zhang F, Yang C, Jin H, Yang Y, Xu M. Dopamine affects the change of pain-related electrical activity induced by morphine dependence. Neurochem Res 2012; 37:977-82. [PMID: 22240902 DOI: 10.1007/s11064-011-0690-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 11/18/2011] [Accepted: 12/29/2011] [Indexed: 02/02/2023]
Abstract
Morphine is among the most effective analgesics. However, many evidences suggest that, besides the well-know analgesic activity, repeated opioids treatment can induce some side effects such as dependence, hyperalgesia and tolerance. The mechanism of noxious information transmission in the central nervous system after dependence is not clear. An important neurotransmitter, dopamine (DA) participates not only in the process of opioid dependence but also in pain modulation in the central nervous system. In the present study we observed changes of electrical activities of pain-excitation neurons (PENs) and pain-inhibition neurons (PINs) in the caudate nucleus (Cd) following the development of morphine dependence. We also observed the role of DA on these changes. Our results revealed that both the latency of PEN discharges and the inhibitory duration of PIN discharges decreased, and the net increased values of PEN and PIN discharges increased in the Cd of morphine dependent rats. Those demonstrated that electrical activities of both PENs and PINs increased in morphine dependent rats. DA inhibited the electrical activities of PENs and enhanced those of PINs in morphine dependent rats.
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Affiliation(s)
- Ying Zhang
- Department of Physiology, Harbin Medical University, Xuefu Road, No.194, Harbin 150081, People's Republic of China
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Felippotti TT, dos Reis Ferreira CM, de Freitas RL, de Oliveira RC, de Oliveira R, Paschoalin-Maurin T, Coimbra NC. Paradoxical effect of noradrenaline-mediated neurotransmission in the antinociceptive phenomenon that accompanies tonic-clonic seizures: role of locus coeruleus neurons and α(2)- and β-noradrenergic receptors. Epilepsy Behav 2011; 22:165-77. [PMID: 21813330 DOI: 10.1016/j.yebeh.2011.06.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 06/17/2011] [Accepted: 06/20/2011] [Indexed: 01/10/2023]
Abstract
The postictal state is generally followed by antinociception. It is known that connections between the dorsal raphe nucleus, the periaqueductal gray matter, and the locus coeruleus, an important noradrenergic brainstem nucleus, are involved in the descending control of ascending nociceptive pathways. The aim of the present study was to determine whether noradrenergic mechanisms in the locus coeruleus are involved in postictal antinociception. Yohimbine (an α(2)-receptor antagonist) or propranolol (a β-receptor antagonist) was microinjected unilaterally into the locus coeruleus, followed by intraperitoneal administration of pentylenetetrazole (PTZ), a noncompetitive antagonist that blocks GABA-mediated Cl(-) influx. Although the administration of both yohimbine and propranolol to the locus coeruleus/subcoeruleus area resulted in a significant decrease in tonic or tonic-clonic seizure-induced antinociception, the effect of yohimbine restricted to the locus coeruleus was more distinct compared with that of propranolol, possibly because of the presynaptic localization of α(2)-noradrenergic receptors in locus coeruleus neurons. These effects were related to the modulation of noradrenergic activity in the locus coeruleus. Interestingly, microinjections of noradrenaline into the locus coeruleus also decrease the postictal antinociception. The present results suggest that the mechanism underlying postictal antinociception involves both α(2)- and β-noradrenergic receptors in the locus coeruleus, although the action of noradrenaline on these receptors causes a paradoxical effect, depending on the nature of the local neurotransmission.
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Affiliation(s)
- Tatiana Tocchini Felippotti
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, University of São Paulo at Ribeirão Preto Medical School, Ribeirão Preto (SP), Brazil
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Amato D, Natesan S, Kapur S, Müller CP. Haloperidol modulates noradrenergic responses to aversive stimulation depending on treatment duration. Behav Brain Res 2011; 221:311-3. [DOI: 10.1016/j.bbr.2011.03.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 03/03/2011] [Indexed: 10/18/2022]
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Hache G, Coudore F, Gardier AM, Guiard BP. Monoaminergic Antidepressants in the Relief of Pain: Potential Therapeutic Utility of Triple Reuptake Inhibitors (TRIs). Pharmaceuticals (Basel) 2011. [PMCID: PMC4053958 DOI: 10.3390/ph4020285] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Over 75% of depressed patients suffer from painful symptoms predicting a greater severity and a less favorable outcome of depression. Imaging, anatomical and functional studies have demonstrated the existence of common brain structures, neuronal pathways and neurotransmitters in depression and pain. In particular, the ascending serotonergic and noradrenergic pathways originating from the raphe nuclei and the locus coeruleus; respectively, send projections to the limbic system. Such pathways control many of the psychological functions that are disturbed in depression and in the perception of pain. On the other hand, the descending pathways, from monoaminergic nuclei to the spinal cord, are specifically implicated in the inhibition of nociception providing rationale for the use of serotonin (5-HT) and/or norepinephrine (NE) reuptake inhibitors (SSRIs, NRIs, SNRIs), in the relief of pain. Compelling evidence suggests that dopamine (DA) is also involved in the pathophysiology and treatment of depression. Indeed, recent insights have demonstrated a central role for DA in analgesia through an action at both the spinal and suprasinal levels including brain regions such as the periaqueductal grey (PAG), the thalamus, the basal ganglia and the limbic system. In this context, dopaminergic antidepressants (i.e., containing dopaminergic activity), such as bupropion, nomifensine and more recently triple reuptake inhibitors (TRIs), might represent new promising therapeutic tools in the treatment of painful symptoms with depression. Nevertheless, whether the addition of the dopaminergic component produces more robust effects than single- or dual-acting agents, has yet to be demonstrated. This article reviews the main pathways regulating pain transmission in relation with the monoaminergic systems. It then focuses on the current knowledge regarding the in vivo pharmacological properties and mechanism of action of monoaminergic antidepressants including SSRIs, NRIs, SNRIs and TRIs. Finally, a synthesis of the preclinical studies supporting the efficacy of these antidepressants in analgesia is also addressed in order to highlight the relative contribution of 5-HT, NE and DA to nociception.
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Affiliation(s)
- Guillaume Hache
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: 011-331-46-83-53-61
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Zhang GW, Yang CX, Zhang D, Gao HE, Zhang Y, Jiao RS, Zhang H, Liang Y, Xu MY. Noradrenergic mechanism involved in the nociceptive modulation of nociceptive-related neurons in the caudate putamen. Neurosci Lett 2010; 480:59-63. [DOI: 10.1016/j.neulet.2010.06.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 05/30/2010] [Accepted: 06/01/2010] [Indexed: 11/26/2022]
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