Abstract:
:Melanin-concentrating hormone (MCH) is an orexigenic neuropeptide produced in the lateral hypothalamus and zona incerta that increases food intake. The neuronal pathways and behavioral mechanisms mediating the orexigenic effects of MCH are poorly understood, as is the extent to which MCH-mediated feeding outcomes are sex-dependent. Here we investigate the hypothesis that MCH-producing neurons act in the nucleus accumbens shell (ACBsh) to promote feeding behavior and motivation for palatable food in a sex-dependent manner. We utilized ACBsh MCH receptor (MCH1R)-directed pharmacology as well as a dual virus chemogenetic approach to selectively activate MCH neurons that project to the ACBsh. Results reveal that both ACBsh MCH1R activation and activating ACBsh-projecting MCH neurons increase consumption of standard chow and palatable sucrose in male rats without affecting motivated operant responding for sucrose, general activity levels, or anxiety-like behavior. In contrast, food intake was not affected in female rats by either ACBsh MCH1R activation or ACBsh-projecting MCH neuron activation. To determine a mechanism for this sexual dimorphism, we investigated whether the orexigenic effect of ACBsh MCH1R activation is reduced by endogenous estradiol signaling. In ovariectomized female rats on a cyclic regimen of either estradiol (EB) or oil vehicle, ACBsh MCH1R activation increased feeding only in oil-treated rats, suggesting that EB attenuates the ability of ACBsh MCH signaling to promote food intake. Collective results show that MCH ACBsh signaling promotes feeding in an estrogen- and sex-dependent manner, thus identifying novel neurobiological mechanisms through which MCH and female sex hormones interact to influence food intake.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Terrill SJ,Subramanian KS,Lan R,Liu CM,Cortella AM,Noble EE,Kanoski SEdoi
10.1016/j.neuropharm.2020.108270subject
Has Abstractpub_date
2020-11-01 00:00:00pages
108270eissn
0028-3908issn
1873-7064pii
S0028-3908(20)30338-5journal_volume
178pub_type
杂志文章abstract::Activation of microglia has been implicated in many neurological conditions including Alzheimer's disease and neuropathic pain. Recent studies provide evidence that P2X ATP receptors on the surface of microglia play a crucial role in initiation of inflammatory cascades. We investigated changes in surface P2X receptors...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2007.06.010
更新日期:2007-09-01 00:00:00
abstract::The effect of varying the ratio of extraction volume to tissue weight (EVR) on the apparent concentration of histamine (HA) in the hypothalamus of the rat was examined. Increasing the weight of tissue (by pooling 1, 2 or 3 hypothalami), in a constant extraction volume, resulted in progressive decreases in apparent con...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(87)90263-2
更新日期:1987-08-01 00:00:00
abstract::To identify the enzymes involved in the induction of N-methyl-D-aspartate (NMDA) receptor-dependent long-term potentiation (LTP) at CA1 synapses of two-week-old rats we have tested various kinase inhibitors. Surprisingly, given the large body of evidence supporting a role for calcium/calmodulin-dependent protein kinas...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(03)00336-8
更新日期:2003-11-01 00:00:00
abstract::Recent evidence suggests an early involvement of dopaminergic (DA) processes and terminals in Parkinson's disease (PD). The arborization of neurons depends on the actin cytoskeleton, which in turn is regulated by small GTPases of the Rho family, encompassing Rho, Rac and Cdc42 subfamilies. Indeed, some reports point t...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2016.06.016
更新日期:2016-10-01 00:00:00
abstract::The effects of the dopamine antagonists haloperidol and sultopride were investigated on the twitch response, evoked by 0.1 Hz stimulation of guinea-pig isolated ileal longitudinal muscle, and on the inhibition of the twitch response induced by 10 Hz stimulation (post-tetanic twitch inhibition) and by application of op...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(94)00166-p
更新日期:1995-05-01 00:00:00
abstract::One proposed factor contributing to the increased frequency of opioid overdose deaths is the emergence of novel synthetic opioids, including illicit fentanyl and fentanyl analogues. A treatment strategy currently under development to address the ongoing opioid crisis is immunopharmacotherapies or opioid-targeted vacci...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2019.107730
更新日期:2019-11-01 00:00:00
abstract::The nicotinic acetylcholine receptor (nAChR) represents the prototype of ligand-gated ion channels. It is vital for neuromuscular transmission and an important regulator of neurotransmission. A variety of toxic compounds derived from diverse species target this receptor and have been of elemental importance in basic a...
journal_title:Neuropharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.neuropharm.2017.06.011
更新日期:2017-12-01 00:00:00
abstract::G-protein coupled dopamine and metabotropic glutamate receptors (mGlu) can modulate neurotransmission during Parkinson's disease (PD)-like neurodegeneration. PET imaging studies in a unilateral dopamine denervation model (6-OHDA) showed a significant inverse correlation of presynaptic mGlu4 and postsynaptic mGlu5 expr...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2015.11.010
更新日期:2016-09-01 00:00:00
abstract::Inhibitory glycine receptors (GlyRs) are widely expressed in spinal cord and brain stem. They are also expressed in the nucleus Accumbens (nAc) where they have been implicated in the release of dopamine from the ventral tegmental area to the nAc in the presence of ethanol. One of the major types of neurons in the nAc ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2019.107773
更新日期:2019-12-01 00:00:00
abstract::Vasopressin V1a receptors in the rat brain have been studied for their role in modulating aggression and anxiety. In the current study blood-oxygen-level-dependent (BOLD) functional MRI was used to test whether V1a receptors modulate neural processing in the maternal brain when dams are exposed to a male intruder. Pri...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2009.06.023
更新日期:2010-01-01 00:00:00
abstract::The effect of injection of inhibitors of GABA-transaminase into the nucleus tractus solitarius (NTS) on arterial pressure was examined in anesthetized rats. Two typical GABA-transaminase inhibitors, gamma-vinylGABA (GVG) and aminooxyacetic acid (AOAA), increased arterial pressure when injected into the NTS, a response...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(93)90053-6
更新日期:1993-06-01 00:00:00
abstract::Dopamine denervation in Parkinson's disease and repeated Levodopa (L-DOPA) administration that induces dyskinesias are associated with an enhancement of basal ganglia neuropeptide transmission. Various adjunct non-dopaminergic treatments to Levodopa were shown to reduce and/or prevent dyskinesias. The aim of this stud...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2009.06.030
更新日期:2010-01-01 00:00:00
abstract::Long-term L-DOPA treatment for Parkinson's disease (PD) is limited by motor complications, particularly L-DOPA-induced dyskinesia (LID). A therapy with the ability to ameliorate LID without reducing anti-parkinsonian benefit would be of great value. We assessed the ability of TC-8831, an agonist at nicotinic acetylcho...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2013.06.005
更新日期:2013-10-01 00:00:00
abstract::Using juvenile rat brain slices, we examined the possibility that strychnine-sensitive receptors for glycine-like amino acids contributed to synaptic inhibition in ventrobasal thalamus, where gamma-aminobutyrate (GABA) is the prevalent inhibitory transmitter. Ventrobasal nuclei showed staining for antibodies against a...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2005.03.013
更新日期:2005-09-01 00:00:00
abstract::PDE10A is a newly identified phosphodiesterase that is highly expressed by the medium spiny projection neurons of the striatum. In order to investigate the physiological role of PDE10A in the central nervous system, PDE10A knockout mice (PDE10A(-/-)) were characterized both behaviorally and neurochemically. PDE10A(-/-...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2006.01.012
更新日期:2006-08-01 00:00:00
abstract::Quinine and quinidine are reported to potentiate the behavioural effects of serotonergic agents and monoamine uptake inhibitors. We have therefore investigated the presynaptic actions of quinine and quinidine on monoamine uptake and release in rat brain tissue in vitro. Quinidine evoked the release of [3H]5-HT, [3H]no...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(98)00075-6
更新日期:1998-07-01 00:00:00
abstract::T-type (Cav3) calcium channels play important roles in neuronal excitability, both in normal and pathological activities of the brain. In particular, they contribute to hyper-excitability disorders such as epilepsy. Here we have characterized the anticonvulsant properties of TTA-A2, a selective T-type channel blocker,...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2015.09.032
更新日期:2016-02-01 00:00:00
abstract::Rat hearts were labelled with [3H]norepinephrine in vivo. Slices of ventricles were prepared, preincubated in Krebs-HCO3 medium (KRB), and then incubated in a Na+-deficient, choline+-Krebs HCO3 (Ch+-Ca2+). The choline+-Krebs HCO3 medium induced a delayed neurosecretion which could be inhibited by either one of the blo...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(85)90089-9
更新日期:1985-01-01 00:00:00
abstract::Amphetamine-type stimulants (ATS) are the second most consumed illicit drug worldwide and lack good treatments for associated substance use disorders, lagging behind other addictive drugs. For this reason, a deeper understanding of the pharmacodynamics of ATS is required. The present study seeks to determine amphetami...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.10.032
更新日期:2019-01-01 00:00:00
abstract::Following its binding to somatodendritic receptors, the neuropeptide neurotensin (NT) internalizes via a clathrin-mediated process. In the present study, we investigated whether NT also internalizes presynaptically using synaptosomes from rat neostriatum, a region in which NT1 receptors are virtually all presynaptic. ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(02)00054-0
更新日期:2002-06-01 00:00:00
abstract::It has been reported that application of 1S,3R-1-aminocyclopentane 1,3-dicarboxylic acid (ACPD) in vitro triggers a slow-onset potentiation in the hippocampal CA1 region. This study examined the effect of ACPD in the CA1 of freely moving rats. No effect on fEPSP baseline recordings occurred at 40 and 400 microM/5 micr...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(95)00108-i
更新日期:1995-08-01 00:00:00
abstract::Extensive evidence indicates that noradrenergic activation of the basolateral amygdala (BLA) is essential for mediating emotional arousal effects on memory consolidation in different target regions. However, the mechanism by which BLA activation regulates such information storage processes remains largely elusive. Her...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2018.08.018
更新日期:2018-10-01 00:00:00
abstract::Etomidate and propofol have clearly distinguishable effects on the central nervous system. However, studies in knock-in mice provided evidence that these agents produce anesthesia via largely overlapping molecular targets, namely GABA(A) receptors containing beta3 subunits. Here the authors address the question as to ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2009.06.014
更新日期:2009-09-01 00:00:00
abstract::Mechanisms underlying the neuroprotective properties of the weak MAO-A inhibitor moclobemide are not understood. Increasing evidence suggests that a moderate increase in intracellular free protons may contribute to neuroprotective properties due to a proton-mediated decrease in neuronal activity. Therefore, we studied...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(00)00033-2
更新日期:2000-08-23 00:00:00
abstract::The current study describes the neuroprotective effects of an endogenous diketopiperazine, cyclo-glycyl-proline (cyclic GP), in rats with hypoxic-ischemic brain injury and the pre-clinical development of an analogue, cyclo-L-glycyl-L-2-allylproline (NNZ 2591), modified for improved bioavailability. The compounds were ...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2007.08.010
更新日期:2007-11-01 00:00:00
abstract::Whole-cell patch clamp recording and immunohistochemistry were used to investigate the expression of P2X receptors on rat parasympathetic ganglion neurons of the otic, sphenopalatine, submandibular, intracardiac and paratracheal ganglia. Neurons from all five ganglia responded to ATP with a rapidly activating, sustain...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2004.12.021
更新日期:2005-04-01 00:00:00
abstract::We evaluated the anticonvulsant efficacy of the antiepileptic drugs (AEDs) lamotrigine (LTG) and felbamate (FBM) in amygdala kindled rats that had been preselected with respect to their response to phenytoin. Anticonvulsant response was tested by determining the afterdischarge threshold (ADT), i.e., a sensitive measur...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/s0028-3908(00)00039-3
更新日期:2000-07-24 00:00:00
abstract::Neuropeptide S (NPS) is a peptide recently recognized to be present in the CNS, and believed to play a role in vigilance and mood control, as behavioral studies have shown it promotes arousal and has an anxiolytic effect. Although NPS precursor is found in very few neurons, NPS positive fibers are present throughout t...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/j.neuropharm.2017.06.025
更新日期:2017-11-01 00:00:00
abstract::In slices of cerebral cortex from rat preloaded with [3H]GABA, muscimol produced a concentration-related inhibition of K(+)-evoked release of tritium with a pIC25 value of 7.80 +/- 0.39. Dimethylbarbituric acid (10 and 100 microM) and pentobarbitone (100 microM) significantly increased this value to 8.31 +/- 0.09, 9.9...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(93)90156-w
更新日期:1993-04-01 00:00:00
abstract::gamma-Aminobutyric acid (GABA, half-maximal inhibitory concentration, IC50 = 9.9 microM) and (-)-baclofen (IC50 = 4.5 microM) but not 10(-4) M muscimol, exerted a presynaptic inhibitory effect on cholinergic transmission in field-stimulated guinea-pig taenia coli preparations, in vitro. The antagonism by 10(-5) M (1S,...
journal_title:Neuropharmacology
pub_type: 杂志文章
doi:10.1016/0028-3908(87)90012-8
更新日期:1987-11-01 00:00:00