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Cai Y, Zhang X, Jiang T, Zhong H, Han X, Ma R, Wu R. 8-OH-DPAT enhances dopamine D2-induced maternal disruption in rats. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2022; 208:467-477. [DOI: 10.1007/s00359-022-01551-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 04/06/2022] [Accepted: 04/08/2022] [Indexed: 11/28/2022]
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Nobukawa S, Wagatsuma N, Nishimura H, Doho H, Takahashi T. An Approach for Stabilizing Abnormal Neural Activity in ADHD Using Chaotic Resonance. Front Comput Neurosci 2021; 15:726641. [PMID: 34539367 PMCID: PMC8442914 DOI: 10.3389/fncom.2021.726641] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/09/2021] [Indexed: 12/02/2022] Open
Abstract
Reduced integrity of neural pathways from frontal to sensory cortices has been suggested as a potential neurobiological basis of attention-deficit hyperactivity disorder. Neurofeedback has been widely applied to enhance reduced neural pathways in attention-deficit hyperactivity disorder by repeated training on a daily temporal scale. Clinical and model-based studies have demonstrated that fluctuations in neural activity underpin sustained attention deficits in attention-deficit hyperactivity disorder. These aberrant neural fluctuations may be caused by the chaos–chaos intermittency state in frontal-sensory neural systems. Therefore, shifting the neural state from an aberrant chaos–chaos intermittency state to a normal stable state with an optimal external sensory stimulus, termed chaotic resonance, may be applied in neurofeedback for attention-deficit hyperactivity disorder. In this study, we applied a neurofeedback method based on chaotic resonance induced by “reduced region of orbit” feedback signals in the Baghdadi model for attention-deficit hyperactivity disorder. We evaluated the stabilizing effect of reduced region of orbit feedback and its robustness against noise from errors in estimation of neural activity. The effect of chaotic resonance successfully shifted the abnormal chaos-chaos intermittency of neural activity to the intended stable activity. Additionally, evaluation of the influence of noise due to measurement errors revealed that the efficiency of chaotic resonance induced by reduced region of orbit feedback signals was maintained over a range of certain noise strengths. In conclusion, applying chaotic resonance induced by reduced region of orbit feedback signals to neurofeedback methods may provide a promising treatment option for attention-deficit hyperactivity disorder.
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Affiliation(s)
- Sou Nobukawa
- Department of Computer Science, Chiba Institute of Technology, Chiba, Japan
| | - Nobuhiko Wagatsuma
- Department of Information Science, Faculty of Science, Toho University, Chiba, Japan
| | - Haruhiko Nishimura
- Graduate School of Applied Informatics, University of Hyogo, Kobe, Japan
| | - Hirotaka Doho
- Graduate School of Applied Informatics, University of Hyogo, Kobe, Japan.,Faculty of Education, Teacher Training Division, Kochi University, Kochi, Japan
| | - Tetsuya Takahashi
- Research Center for Child Mental Development, Kanazawa University, Kanazawa, Japan.,Department of Neuropsychiatry, University of Fukui, Fukui, Japan.,Uozu Shinkei Sanatorium, Uozu, Japan
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Nie L, Di T, Li Y, Cheng P, Li M, Gao J. Blockade of serotonin 5-HT 2A receptors potentiates dopamine D 2 activation-induced disruption of pup retrieval on an elevated plus maze, but has no effect on D 2 blockade-induced one. Pharmacol Biochem Behav 2018; 171:74-84. [PMID: 29944910 DOI: 10.1016/j.pbb.2018.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 11/27/2022]
Abstract
Appetitive aspect of rat maternal behavior, such as pup retrieval, is motivationally driven and sensitive to dopamine disturbances. Activation or blockade of dopamine D2 receptors causes a similar disruption of pup retrieval, which may also reflect an increase in maternal anxiety and/or a disruption of executive function. Recent work indicates that serotonin 5-HT2A receptors also play an important role in rat maternal behavior. Given the well-known modulation of 5-HT2A on the mesolimbic and mesocortical dopamine functions, the present study examined the extent to which blockade of 5-HT2A receptors on dopamine D2-mediated maternal effects using a pup retrieval on the elevated plus maze (EPM) test. Sprague-Dawley postpartum female rats were acutely injected with quinpirole (a D2 agonist, 0.10 and 0.25 mg/kg, sc), or haloperidol (a D2 antagonist, 0.1 or 0.2 mg/kg, sc), in combination of MDL100907 (a 5-HT2A receptor antagonist, 1.0 mg/kg, sc, 30 min before quinpirole or haloperidol injection) or saline and tested at 30, 90 and 240 min after quinpirole or haloperidol injection on postpartum days 3 and 7. Quinpirole and haloperidol decreased the number of pup retrieved (an index of maternal motivation) and sequential retrieval score (an index of executive function), prolonged the pup retrieval latencies, reduced the percentage of time spent on the open arms (an index of maternal anxiety), and decreased the distance travelled on the maze in a dose-dependent and time-dependent fashion. MDL100907 treatment by itself had no effect on pup retrieval, but it exacerbated the quinpirole-induced disruption of pup retrieval, but had no effect on the haloperidol-induced one. These findings suggest a complex interactive effect between 5-HT2A and D2 receptors on one or several maternal processes (maternal motivation, anxiety and executive function), and support the idea that one molecular mechanism by which 5-HT2A receptors mediate maternal behavior is through its modulation of D2 receptors.
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Affiliation(s)
- Lina Nie
- Faculty of Psychology, Southwest University, Chongqing, China; Key Laboratory of Cognition and Personality, Southwest University, Ministry of Education, China
| | - Tianqi Di
- Faculty of Psychology, Southwest University, Chongqing, China; Key Laboratory of Cognition and Personality, Southwest University, Ministry of Education, China
| | - Yu Li
- Faculty of Psychology, Southwest University, Chongqing, China; Key Laboratory of Cognition and Personality, Southwest University, Ministry of Education, China
| | - Peng Cheng
- Faculty of Psychology, Southwest University, Chongqing, China; Key Laboratory of Cognition and Personality, Southwest University, Ministry of Education, China
| | - Ming Li
- Faculty of Psychology, Southwest University, Chongqing, China; Chongqing Collaborative Innovation Center for Brain Science, Chongqing, China; Department of Psychology, University of Nebraska-Lincoln, Lincoln, NE 68588-0308, USA.
| | - Jun Gao
- Faculty of Psychology, Southwest University, Chongqing, China; Key Laboratory of Cognition and Personality, Southwest University, Ministry of Education, China; Chongqing Collaborative Innovation Center for Brain Science, Chongqing, China.
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Ouhaz Z, Ba-M’hamed S, Bennis M. Haloperidol treatment at pre-exposure phase reduces the disturbance of latent inhibition in rats with neonatal ventral hippocampus lesions. C R Biol 2014; 337:561-70. [DOI: 10.1016/j.crvi.2014.07.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 07/10/2014] [Accepted: 07/23/2014] [Indexed: 11/28/2022]
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Effect of dopamine and serotonin receptor antagonists on fencamfamine-induced abolition of latent inhibition. Eur J Pharmacol 2012; 698:246-51. [PMID: 23123352 DOI: 10.1016/j.ejphar.2012.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Revised: 10/10/2012] [Accepted: 10/13/2012] [Indexed: 11/21/2022]
Abstract
The purpose of this investigation was to verify the role of dopamine and serotonin receptors in the effect of fencamfamine (FCF) on latent inhibition. FCF is a psychomotor stimulant with an indirect dopaminergic action. Latent inhibition is a model of attention. Latent inhibition is blocked by dopaminergic agents and facilitated by dopamine receptor agonists. FCF has been shown to abolish latent inhibition. The serotonergic system may also participate in the neurochemical mediation of latent inhibition. The selective dopamine D(1) receptor antagonist SCH 23390 (7-chloro-3-methyl-1-phenyl-1,2,4,5-tetrahydro-3-benzazepin-8-ol), D(2) receptor antagonists pimozide (PIM) and methoclopramide (METH), and serotonin 5-HT(2A/C) receptor antagonist ritanserin (RIT) were used in the present study. Latent inhibition was evaluated using a conditioned emotional response procedure. Male Wistar rats that were water-restricted were subjected to a three-phase procedure: preexposure to a tone, tone-shock conditioning, and a test of the effect of the tone on licking frequency. All of the drugs were administered before the preexposure and conditioning phases. The results showed that FCF abolished latent inhibition, and this effect was clearly antagonized by PIM and METH and moderately attenuated by SCH 23390. At the doses used in the present study, RIT pretreatment did not affect latent inhibition and did not eliminate the effect of FCF, suggesting that the FCF-induced abolition of latent inhibition is not mediated by serotonin 5-HT(2A/C) receptors. These results suggest that the effect of FCF on latent inhibition is predominantly related to dopamine D(2) receptors and that dopamine D(2) receptors participate in attention processes.
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Abstract
Latent inhibition (LI) manifests as poorer conditioning to a stimulus that has previously been experienced without consequence. There is good evidence of dopaminergic modulation of LI, as the effect is reliably disrupted by the indirect dopamine (DA) agonist amphetamine. The disruptive effects of amphetamine on LI are reversed by both typical and atypical antipsychotics, which on their own are able to facilitate LI. However, the contribution of different DA receptors to these effects is poorly understood. Amphetamine effects on another stimulus selection procedure, overshadowing, have been suggested to be D1-mediated. Thus, in the current experiments, we systematically investigated the role of D1 receptors in LI. First, we tested the ability of the full D1 agonist SKF 81297 to abolish LI and compared the effects of this drug on LI and overshadowing. Subsequently, we examined whether the D1 antagonist SCH 23390 can lead to the emergence of LI under conditions that do not produce the effect in normal animals (weak pre-exposure). Finally, we tested the ability of SCH 23390 to block amphetamine-induced disruption of LI. We found little evidence that direct stimulation of D1 receptors abolishes LI (although there was some attenuation of LI at 0.4 mg/kg SKF 81297). Similarly, SCH 23390 failed to enhance LI. However, SCH 23390 did block amphetamine-induced disruption of LI. These data indicate that, while LI may be unaffected by selective manipulation of activity at D1 receptors, the effects of amphetamine on LI are to some extent dependent on actions at D1 receptors.
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