D1-like receptors have two important qualities, they are all metabotropic and they activate with phasic dopamine. After analyzing the molecular implications of each of these qualities separately and then combining them for the specific case of the prefrontal cortex, we propose a model that explains why long term potentiation in this cortical area depends on the amount of contact between D1-like receptors and dopamine. This simple model also explains why in order to promote long term potentiation, dopamine transporters should be scarce in the prefrontal cortex. Additionally, it explains why stimulants like methamphetamine could have such detrimental cognitive effects on regular substance consumers.
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http://dx.doi.org/10.1016/j.pnpbp.2023.110784 | DOI Listing |
Insect Biochem Mol Biol
January 2025
Department of Vector Entomology, Kyungpook National University, Sangju, Republic of Korea; Research Institute of Invertebrate Vector, Kyungpook National University, Sangju, Republic of Korea. Electronic address:
Dopamine plays multifaceted roles in the physiology of insects and ticks, acting as a key neurotransmitter and modulator of various biological processes. In ticks, it plays a particularly important role in regulating salivary gland function, which is essential for successful tick feeding on hosts. Salivary secretion in ticks is orchestrated by the collection of saliva in the acinar lumen mediated by the dopamine receptor (D1) and the expulsion of collected saliva into the salivary duct mediated by the invertebrate specific D1-like dopamine receptor (InvD1L).
View Article and Find Full Text PDFProteins
January 2025
Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India.
Vector-borne diseases pose a severe threat to human life, contributing significantly to global mortality. Understanding the structure-function relationship of the vector proteins is pivotal for effective insecticide development due to their involvement in drug resistance and disease transmission. This study reports the structural and dynamic features of D1-like dopamine receptors (DARs) in disease-causing mosquito species, such as Aedes aegypti, Culex quinquefasciatus, Anopheles gambiae, and Anopheles stephensi.
View Article and Find Full Text PDFPsychopharmacology (Berl)
December 2024
Evolutionary Genetics Department, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.
Rationale: The sexual behavior of the female rat is highly motivated, and the mesocorticolimbic dopaminergic system -involved in psychostimulants effects- has been implicated in its regulation. Female rats begin to express sexual behavior during adolescence, a period during which this system is not yet mature.
Objective: To examine the impact of cocaine on sexual motivation and behavior of adolescent and adult female rats, and to determine the dopamine receptors binding in mesocorticolimbic areas of these females.
Behav Pharmacol
February 2025
Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences.
Exposure to stressful conditions such as forced swim stress (FSS) induces antinociception. Previous reports determined that dopamine receptors in the CA1 hippocampal area are important in chronic pain processing. Considering that neural mechanisms behind acute and chronic pain differ significantly, in this study, we have investigated the role of dopamine receptors within the CA1 region in the FSS-induced antinociceptive response in the acute pain induced by the tail-flick test in the rat.
View Article and Find Full Text PDFMidbrain dopamine neurons are well-known to shape central nervous system function, yet there is growing evidence for their influence on the peripheral immune systems. Here we demonstrate that midbrain dopamine neurons form a circuit to the spleen via a multisynaptic pathway from the dorsal vagal complex (DVC) through the celiac ganglion. Midbrain dopamine neurons modulate the activity of D1-like and D2-like dopamine receptor-expressing DVC neurons.
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