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Enhanced Transient Striatal Dopamine Release and Reuptake in Lphn3 Knockout Rats. 2020

Samantha L Regan, and Michael T Cryan, and Michael T Williams, and Charles V Vorhees, and Ashley E Ross
Neuroscience Graduate Program, University of Cincinnati, Cincinnati, Ohio 45229, United States.

Latrophilin-3 (LPHN3) is an adhesion G protein coupled receptor involved in regulating neuroplasticity. Variants of LPHN3 are associated with increased risk of attention-deficit hyperactivity disorder. Data from mouse, zebrafish, Drosophila, and rat show that disruption of LPHN3 results in hyperactivity, and in the Sprague-Dawley Lphn3 knockout rat, exhibit deficits in learning and memory and changes in dopamine (DA) markers in the neostriatum. To determine the effects of Lphn3 deletion on DA neurotransmission, we compared the concentration, duration, and frequency of DA transients in KO and wild-type rats using fast-scan cyclic voltammetry in brain slices. Lphn3 KO rats showed higher release of DA, and the duration and interevent time were markedly decreased compared with wild-type rats. The data demonstrate that LPHN3 plays a heretofore unrecognized role in DA signaling and may represent a new target for small molecule regulation of DA neurotransmission with translational implications.

UI MeSH Term Description Entries
D003342 Corpus Striatum Striped GRAY MATTER and WHITE MATTER consisting of the NEOSTRIATUM and paleostriatum (GLOBUS PALLIDUS). It is located in front of and lateral to the THALAMUS in each cerebral hemisphere. The gray substance is made up of the CAUDATE NUCLEUS and the lentiform nucleus (the latter consisting of the GLOBUS PALLIDUS and PUTAMEN). The WHITE MATTER is the INTERNAL CAPSULE. Lenticular Nucleus,Lentiform Nucleus,Lentiform Nuclei,Nucleus Lentiformis,Lentiformis, Nucleus,Nuclei, Lentiform,Nucleus, Lenticular,Nucleus, Lentiform,Striatum, Corpus
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D004298 Dopamine One of the catecholamine NEUROTRANSMITTERS in the brain. It is derived from TYROSINE and is the precursor to NOREPINEPHRINE and EPINEPHRINE. Dopamine is a major transmitter in the extrapyramidal system of the brain, and important in regulating movement. A family of receptors (RECEPTORS, DOPAMINE) mediate its action. Hydroxytyramine,3,4-Dihydroxyphenethylamine,4-(2-Aminoethyl)-1,2-benzenediol,Dopamine Hydrochloride,Intropin,3,4 Dihydroxyphenethylamine,Hydrochloride, Dopamine
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001289 Attention Deficit Disorder with Hyperactivity A behavior disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity. Although most individuals have symptoms of both inattention and hyperactivity-impulsivity, one or the other pattern may be predominant. The disorder is more frequent in males than females. Onset is in childhood. Symptoms often attenuate during late adolescence although a minority experience the full complement of symptoms into mid-adulthood. (From DSM-V) ADHD,Attention Deficit Disorder,Attention Deficit Hyperactivity Disorder,Brain Dysfunction, Minimal,Hyperkinetic Syndrome,Minimal Brain Dysfunction,ADDH,Attention Deficit Disorders with Hyperactivity,Attention Deficit Hyperactivity Disorders,Attention Deficit-Hyperactivity Disorder,Attention Deficit Disorders,Attention Deficit-Hyperactivity Disorders,Deficit Disorder, Attention,Deficit Disorders, Attention,Deficit-Hyperactivity Disorder, Attention,Deficit-Hyperactivity Disorders, Attention,Disorder, Attention Deficit,Disorder, Attention Deficit-Hyperactivity,Disorders, Attention Deficit,Disorders, Attention Deficit-Hyperactivity,Dysfunction, Minimal Brain,Syndromes, Hyperkinetic
D017207 Rats, Sprague-Dawley A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company. Holtzman Rat,Rats, Holtzman,Sprague-Dawley Rat,Rats, Sprague Dawley,Holtzman Rats,Rat, Holtzman,Rat, Sprague-Dawley,Sprague Dawley Rat,Sprague Dawley Rats,Sprague-Dawley Rats
D043562 Receptors, G-Protein-Coupled The largest family of cell surface receptors involved in SIGNAL TRANSDUCTION. They share a common structure and signal through HETEROTRIMERIC G-PROTEINS. G Protein Coupled Receptor,G-Protein-Coupled Receptor,G-Protein-Coupled Receptors,G Protein Coupled Receptors,Receptor, G-Protein-Coupled,Receptors, G Protein Coupled
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus
D018000 Receptors, Peptide Cell surface receptors that bind peptide messengers with high affinity and regulate intracellular signals which influence the behavior of cells. Peptide Hormone Receptors,Peptide Receptors,Peptide Hormone Receptor,Peptide Receptor,Receptors, Peptide Hormones,Receptors, Peptides,Hormone Receptor, Peptide,Hormone Receptors, Peptide,Hormones Receptors, Peptide,Peptide Hormones Receptors,Peptides Receptors,Receptor, Peptide,Receptor, Peptide Hormone,Receptors, Peptide Hormone

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