Results 1 to 10 of about 21,829 (217)

Challenges and new opportunities for detecting endogenous opioid peptides in reward [PDF]

open access: yesAddiction Neuroscience, 2022
The endogenous opioid peptide system, comprised of enkephalins, endorphins, dynorphins, and nociceptin, is a highly complex neurobiological system. Opioid peptides are derived from four precursor molecules and undergo several processing events yielding ...
Sineadh M. Conway   +2 more
doaj   +2 more sources

Avian opioid peptides: evolutionary considerations, functional roles and a challenge to address critical questions [PDF]

open access: yesFrontiers in Physiology, 2023
The present review considers the putative hormonal opioid peptides in birds. In birds and all other vertebrates, there are four opioid related genes encoding a series of peptides.
Krystyna Pierzchała-Koziec   +1 more
doaj   +2 more sources

Peptidomimetics and Their Applications for Opioid Peptide Drug Discovery [PDF]

open access: goldBiomolecules, 2022
Despite various advantages, opioid peptides have been limited in their therapeutic uses due to the main drawbacks in metabolic stability, blood-brain barrier permeability, and bioavailability.
Yeon Sun Lee
doaj   +2 more sources

Effects of Central Administration of Opioid Peptides, Vasotocin, Mesotocin, and Corticotrophin-Releasing Factor on Water Intake in Chicks [PDF]

open access: yesThe Journal of Poultry Science
Freedom from thirst is an undeniable requirement of the poultry industry. However, the regulatory mechanisms underlying water intake in chicks are not yet fully understood.
Yuhui Zhang   +4 more
doaj   +2 more sources

The atypical chemokine receptor ACKR3/CXCR7 is a broad-spectrum scavenger for opioid peptides [PDF]

open access: yesNature Communications, 2020
Opioids modulate pain, anxiety and stress by activating four subtypes of opioid receptors. The authors show that atypical chemokine receptor 3 (ACKR3) is a scavenger for various endogenous opioid peptides regulating their availability without activating ...
Max Meyrath   +13 more
doaj   +2 more sources

Compartment-specific opioid receptor signaling is selectively modulated by different dynorphin peptides

open access: goldeLife, 2021
Many signal transduction systems have an apparent redundancy built into them, where multiple physiological agonists activate the same receptors. Whether this is true redundancy, or whether this provides an as-yet unrecognized specificity in downstream ...
Jennifer M Kunselman   +4 more
doaj   +2 more sources

Homeostatic scaling of dynorphin signaling by a non-canonical opioid receptor [PDF]

open access: yesNature Communications
The endogenous opioid system provides powerful control over emotions, nociception, and motivation among many other fundamental nervous system functions.
Xiaona Li   +10 more
doaj   +2 more sources

Design and development of novel, short, stable dynorphin-based opioid agonists for safer analgesic therapy

open access: yesFrontiers in Pharmacology, 2023
Kappa opioid receptors have exceptional potential as an analgesic target, seemingly devoid of many problematic Mu receptor side-effects. Kappa-selective, small molecule pharmaceutical agents have been developed, but centrally mediated side-effects limit ...
Rink-Jan Lohman   +4 more
doaj   +1 more source

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