Results 21 to 30 of about 339 (135)

Traumatic Stress-Induced Vulnerability to Addiction: Critical Role of the Dynorphin/Kappa Opioid Receptor System

open access: yesFrontiers in Pharmacology, 2022
Substance use disorders (SUD) may emerge from an individual’s attempt to limit negative affective states and symptoms linked to stress. Indeed, SUD is highly comorbid with chronic stress, traumatic stress, or post-traumatic stress disorder (PTSD), and ...
Claire Leconte   +2 more
doaj   +1 more source

Endogenous Opioids in Crohn’s Disease

open access: yesBiomedicines, 2023
Caring for patients with Crohn’s disease (CD) is a serious challenge in modern medicine. The increasing incidence of CD among adolescents and the severe course of the disease create the need for new methods of diagnosis and therapy.
Adrian Martyniak   +2 more
doaj   +1 more source

Dynorphin is expressed primarily by GABAergic neurons that contain galanin in the rat dorsal horn

open access: yesMolecular Pain, 2011
Background The opioid peptide dynorphin is expressed by certain neurons in the superficial dorsal horn of the spinal cord, but little is known about the types of cell that contain dynorphin.
Kaneko Takeshi   +6 more
doaj   +1 more source

CRF1-R activation of the dynorphin/kappa opioid system in the mouse basolateral amygdala mediates anxiety-like behavior.

open access: yesPLoS ONE, 2009
Stress is a complex human experience and having both rewarding and aversive motivational properties. The adverse effects of stress are well documented, yet many of underlying mechanisms remain unclear and controversial. Here we report that the anxiogenic
Michael R Bruchas   +3 more
doaj   +1 more source

Ester hydrolysis differentially reduces aconitine-induced anti-hypersensitivity and acute neurotoxicity: Involvement of spinal microglial dynorphin expression and implications for Aconitum processing

open access: yesFrontiers in Pharmacology, 2016
Aconitines, including bulleyaconitine A, probably the most bioactive and abundant alkaloids in Aconitum plant, are a group of diester C19-diterpenoid alkaloids with one acetylester group attached to C8 of the diterpenoid skeleton and one benzoylester ...
Teng-Fei Li, Yong-Xiang Wang, Nian Gong
doaj   +1 more source

Rapid-Onset Anti-Stress Effects of a Kappa-Opioid Receptor Antagonist, LY2795050, Against Immobility in an Open Space Swim Paradigm in Male and Female Mice

open access: yesFrontiers in Pharmacology, 2021
The kappa-opioid receptor (KOR) / dynorphin system is implicated with behavioral and neurobiological effects of stress exposure (including heavy exposure to drugs of abuse) in translational animal models.
Caroline Baynard   +2 more
doaj   +1 more source

Estradiol treatment prevents injury induced enhancement in spinal cord dynorphin expression.

open access: yesFrontiers in Physiology, 2012
Administration of the ovarian steroid estradiol in male and female animals has been shown to have neuromodulatory and neuroprotective effects in a variety of experimental models. In the present study, spinal tissues from dermatomes just above (T5-7, at
Daya S. Gupta, Charles H. Hubscher
doaj   +1 more source

Alterations in Cortical and Basal Ganglia Levels of Opioid Receptor Binding in a Rat Model of l-DOPA-Induced Dyskinesia

open access: yesNeurobiology of Disease, 2001
Opioid receptor-binding autoradiography was used as a way to map sites of altered opioid transmission in a rat model of l-DOPA-induced dyskinesia. Rats with unilateral 6-hydroxydopamine lesions of the nigrostriatal pathways sustained a 3-week treatment ...
P.A. Johansson   +3 more
doaj   +1 more source

Acute Wheel-Running Increases Markers of Stress and Aversion-Related Signaling in the Basolateral Amygdala of Male Rats

open access: yesJournal of Functional Morphology and Kinesiology, 2022
Physical activity (PA) is a non-invasive, cost-effective means of reducing chronic disease. Most US citizens fail to meet PA guidelines, and individuals experiencing chronic stress are less likely to be physically active.
Kolter B. Grigsby   +5 more
doaj   +1 more source

Enhanced dynorphin expression and secretion in pancreatic beta-cells under hyperglycemic conditions

open access: yesMolecular Metabolism
Objective: Dynorphin, an endogenous opioid peptide predominantly expressed in the central nervous system and involved in stress response, pain, and addiction, has intrigued researchers due to its expression in pancreatic β-cells.
Miranda Movahed   +2 more
doaj   +1 more source

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