Is stimulation of both D1 and D2 receptors necessary for the expression of dopamine-mediated behaviors?

doi:10.1016/0091-3057(88)90442-X

Pharmacology Biochemistry and Behavior

Volume 30, Issue 1, May 1988, Pages 189-193

https://doi.org/10.1016/0091-3057(88)90442-X Get rights and content

Abstract

Recent electrophysiological findings have indicated that D1 dopamine (DA) receptor stimulations by SKF 38393 enables the inhibitory effects of the D2 receptor agonist quinpirole on nucleus accumbens neurons. In the present study, a similar interaction was shown for quinpirole-induced stereotyped behaviors. In control rats, SKF 38393 enhanced the stereotyped responses induced by quinpirole, converting lower-level stereotypies (sniffing and rearing) to more intense oral behaviors (licking and gnawing). In rats depleted of DA (79% reduction) by the tyrosine hydroxylase inhibitor α-methyl-p-tyrosine (AMPT), the behavioral effects of quinpirole were abolished. However, quinpirole-induced stereotyped responses were reinstated by SKF 38393 suggesting that D1 receptor stimulation by endogenous DA is necessary for D2 receptor-mediated stereotyped responses (sniffing, rearing). In support of this suggestion, stereotyped behaviors produced by the non-selective D1/D2 agonist apomorphine were not affected by AMPT pretreatment. In contrast to the effects of quinpirole, the ability of SKF 38393 to induce grooming responses was not abolished by AMPT pretreatment or by combined pretreatment with AMPT and reserpine (>99% DA depletion). These results indicate that D1 receptor stimulation enables D2 receptor-mediated stereotyped responses, but that this relationship is not reciprocal since D2 receptor stimulation is not necessary for the grooming response elicited by SKF 38393.

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Adolescence is a phase of substantial changes in the brain, characterized by maturational remodeling of many systems. This remodeling allows functional plasticity to adapt to a changing environment. The dopaminergic system is under morphological and physiological changes during this phase. In the present study, we investigated if changes in the dopaminergic tone alter mice behavior in a receptor and sex-specific manner, specifically at the beginning of the puberty period. We administered L-Dopa, SKF-38393 (D1 dopamine receptor agonist), and Quinpirole (D2 dopamine receptor agonist) and tested male and female mice's motor, anxiety- and depressive-like behavior. While females displayed an impaired exploratory drive, males presented an intense depressive-like response. Our results provide insights into the function of dopaminergic development in adolescent behavior and highlight the importance of studies in this time window with male and female subjects.
The effects of early life stress on motivated behaviors: A role for gonadal hormones
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Citation Excerpt :
However, the two receptors have been shown to work together for certain outcomes, in a model known as D1/D2 receptor synergism (Gershanik et al., 1983; Dziedzicka-Wasylewska, 2004). Concurrent activation of D1 and D2 receptors is necessary for DA-mediated stereotyped behaviors (White et al., 1988) and simultaneous D1 and D2 receptor activation in the NAc has rewarding effects in rats (Ikemoto et al., 1997). This synergism between D1 and D2 receptors in the NAc suggests that estradiol-induced increases in D1 and D2 receptor expression may be able to enhance reward processing, despite their apparent opposite actions.
Motivated behaviors are controlled by the mesocorticolimbic dopamine (DA) system, consisting of projections from the ventral tegmental area (VTA) to the nucleus accumbens (NAc) and prefrontal cortex (PFC), with input from structures including the medial preoptic area (mPOA). Sex differences are present in this circuit, and gonadal hormones (e.g., estradiol and testosterone) are important for regulating DA transmission. Early life stress (ELS) also regulates the mesocorticolimbic DA system. ELS modifies motivated behaviors and the underlying DA circuitry, increasing risk for disorders such as substance use disorder, major depression, and schizophrenia. ELS has been shown to change gonadal hormone signaling in both sexes. Thus, one way that ELS could impact mesocorticolimbic DA is by altering the efficacy of gonadal hormones. This review provides evidence for this idea by integrating the gonadal hormone, motivation, and ELS literature to argue that ELS alters gonadal hormone signaling to impact motivated behavior. We also discuss the importance of these effects in the context of understanding risk and treatments for psychiatric disorders in men and women.
Parental morphine exposure affects repetitive grooming actions and marble burying behavior in the offspring: Potential relevance for obsessive-compulsive like behavior
2019, European Journal of Pharmacology
Citation Excerpt :
Thus, the overexpression of D1-like DR might be involved in encouraging the grooming behavior. Several studies have been carried out to determine the role of D1-like DR in OCD (Molloy and Waddington, 1984; Starr and Starr, 1986; White et al., 1988) and demonstrated that blockage of D1-like DR caused intensified the grooming behavior. On the other hand, D2 DR increased compulsive-like checking behavior (Einat and Szechtman, 1995; Mundt et al., 2009).
Family, adoption and twin studies have highlighted the significant role of heritable influences on individual differences in opioid addiction. Meanwhile, obsessive-compulsive disorder (OCD) is a disorder wherein the individual experiences recurring thoughts that cause irrational fears and anxiety.
In the present study, adult male and female rats received morphine solution for 21 days and were drug-free for 10 days. Offspring were used in 4 distinct groups; (1) paternal morphine-exposed, (2) maternal morphine-exposed, (3) maternal and paternal morphine-exposed, and (4) drug-naïve subjects. We assessed the grooming behavior and marble burying test as an indicator of obsessive-compulsive behavior. To clarify the mechanisms underlying these changes, the mRNA level of BDNF, the phosphorylation level of CREB and the protein level of D2 dopamine receptor (DR) were evaluated in the nucleus accumbens (NAc).
The grooming behavior in male offspring with one or two morphine-abstinent parent(s) increased compared with the offspring of drug naïve rats. In addition, the offspring of morphine-exposed parents buried more marbles when compared with the offspring of drug-naïve parents. Also, the BDNF mRNA was down-regulated in the NAC. However, the levels of phospho-CREB and D2 DR were elevated.
Previous studies indicated that exposure to morphine in adulthood enhances the risk of psychiatric disorders in offspring. OCD is one the comorbid disorders with addiction and increases the risk of substance abuse disorder in patients. In this survey, we found that morphine exposure in parents before gestation can encourage obsessive-compulsive behavior in offspring.
In vitro and in vivo characterization of the agonist-dependent D3 dopamine receptor tolerance property
2014, Neuropharmacology
The D3 dopamine receptor has the highest affinity for dopamine, many antipsychotics as well as agonists used to treat Parkinson's disease and related disorders. We and others have reported that the D3 receptor exhibits a tolerance property wherein repeated agonist stimulation of the receptor results in a progressive loss of agonist-induced signaling response. Recently we reported that the D3 receptor tolerance property is agonist dependent and identified a novel agonist, ES609, which does not elicit D3 receptor tolerance. Here, we used the classical tolerance-inducing D3 receptor agonist, PD128907, and the novel agonist, ES609, to demonstrate that the D3 receptor tolerance property is exhibited not only in cellular signaling in vitro and in vivo, but also manifests at the behavior level. Using AtT-20 cells stably expressing D3 receptors we show that PD128907, but not ES609, induces tolerance in the D3 receptor-mitogen activated protein kinase (MAPK) pathway. Using the novel drd3-EGFP reporter mice, we demonstrate that 0.05 mg/kg PD128907 and 10 mg/kg ES609 selectively activate the D3 receptor-MAPK signaling pathway in vivo; however, only PD128907 induces tolerance. Locomotor behavior assessment showed that both PD128907 and ES609 decreased locomotor activity of the drd3-EGFP mice. While the agonist-induced decrease in locomotor activity was attenuated in drd3-EGFP mice administered two sequential doses of tolerance-inducing agonist PD128907, this attenuation was not seen in mice repeatedly administered the novel agonist, ES609. Together the results suggest that the D3 receptor tolerance property is exhibited in MAPK signaling in vitro and in vivo and also affects agonist-induced locomotor behavior.
Nucleus accumbens and dopamine-mediated turning behavior of the rat: Role of accumbal non-dopaminergic receptors
2012, Journal of Pharmacological Sciences
Accumbal dopamine plays an important role in physiological responses and diseases such as schizophrenia, Parkinson’s disease, and depression. Since the nucleus accumbens contains different neurotransmitters, it is important to know how they interact with dopaminergic function: this is because modifying accumbal dopamine has far-reaching consequences for the treatment of diseases in which accumbal dopamine is involved. This review provides a summary of these interactions, and our current knowledge about them are as follows: A) AMPA receptors are required for dopamine-dependent behavior and vice versa; NMDA receptors modulate the activity at the level of AMPA and/or dopamine D₁ receptors. B) GABA_A, but not GABA_B, receptors inhibit dopamine-dependent behavior. C) Nicotinic receptors are required for dopamine-dependent behavior, whereas muscarinic receptors inhibit dopamine-dependent behavior. D) α-Adrenoceptors inhibit dopamine-dependent behavior in contrast to β-adrenoceptors, which potentiate this behavior. E) μ- and δ₂-opioid receptors elicit behavior that requires an intact dopaminergic function and δ₂-opioid receptors modulate dopamine-dependent behavior. F) Orexin 2 receptors play an important, modifying role in dopamine-dependent behavior. G) Somatostatin receptors potentiate dopamine-dependent behavior. It is suggested that modulation of the above-mentioned nondopaminergic receptors provide new tools to control physiological functions as well as diseases mediated by accumbal dopamine.
Reduced D2-mediated signaling activity and trans-synaptic upregulation of D1 and D2 dopamine receptors in mice overexpressing the dopamine transporter
2009, Cellular Signalling
The dopamine transporter (DAT) regulates the temporal and spatial actions of dopamine by reuptaking this neurotransmitter into the presynaptic neurons. We recently generated transgenic mice overexpressing DAT (DAT-tg) that have a 3-fold increase in DAT protein levels which results in a 40% reduction of the extracellular DA concentration in the striatum. The aim of this study was to examine the effect of this reduction in dopaminergic tone on postsynaptic responses mediated by dopamine receptors. We report here that DAT-tg mice have increased levels of striatal D1 (30%) and D2 (~ 60%) dopamine receptors with D1 receptor signaling components not significantly altered, as evidenced by unaffected basal or stimulated levels of phospho-GluR1 (Ser845) and phospho-ERK2. However, the novel D2 mediated Akt signaling is markedly altered in DAT-tg animals. In particular, there is a 300% increase in the basal levels of phospho-Akt in the striatum of DAT-tg, reflecting the reduced extracellular dopamine tone in these animals. This increase in basal pAkt levels can be pharmacologically recapitulated by partial dopamine depletion in WT mice treated with the selective tyrosine hydroxylase inhibitor alpha-methyl-para-tyrosine (α-MPT). Behaviorally, DAT-tg animals demonstrate an augmented synergistic interaction between up-regulated D1 and D2 receptors, which results in increased climbing behavior in transgenic mice after stimulation with either apomorphine or a co-administration of selective D1 and D2 receptor agonists. In sum, our study reveals that hypodopaminegia caused by up-regulation of DAT results in significant alterations at postsynaptic receptor function with most notable dysregulation at the level of D2 receptor signaling.

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Rapid communicationIs stimulation of both D1 and D2 receptors necessary for the expression of dopamine-mediated behaviors?

Abstract

Eur J Pharmacol

Eur J Pharmacol

Eur J Pharmacol

Neuropharmacology

Neuropharmacology

Life Sci

Eur J Pharmacol

D1 dopamine receptor: The search for a function

Synapse

The role of forebrain systems in amphetamine-induced stereotyped behavior in the rat

Psychopharmacologia

Behavioral correlates of dopamine receptor activation

Neurology

Effects of chronic SCH 23390 treatment on the biochemical and behavioral properties of D1 and D2 dopamine agonist after selective D1 dopamine receptor upregulation

J Pharmacol Exp Ther

Rapid communication
Is stimulation of both D1 and D2 receptors necessary for the expression of dopamine-mediated behaviors?