Five Decades of Research on Opioid Peptides: Current Knowledge and Unanswered Questions. [PDF]
In the mid-1970s, an intense race to identify endogenous substances that activated the same receptors as opiates resulted in the identification of the first endogenous opioid peptides.
Fricker LD +3 more
europepmc +2 more sources
Peptidomimetics and Their Applications for Opioid Peptide Drug Discovery [PDF]
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
Role of Milk-Derived Opioid Peptides and Proline Dipeptidyl Peptidase-4 in Autism Spectrum Disorders. [PDF]
Opioid peptides released during digestion of dietary proteins such as casein, were suggested to contribute to autism development, leading to the announcement of opioid excess hypothesis of autism.
Jarmołowska B +7 more
europepmc +2 more sources
Non-Opioid Peptides Targeting Opioid Effects. [PDF]
Opioids are the most potent widely used analgesics, primarily, but not exclusively, in palliative care. However, they are associated with numerous side effects, such as tolerance, addiction, respiratory depression, and cardiovascular events. This, in turn, can result in their overuse in cases of addiction, the need for dose escalation in cases of ...
Kaczyńska K, Wojciechowski P.
europepmc +4 more sources
Distinct roles of exogenous opioid agonists and endogenous opioid peptides in the peripheral control of neuropathy-triggered heat pain [PDF]
Neuropathic pain often results from peripheral nerve damage, which can involve immune response. Local leukocyte-derived opioid peptides or exogenous opioid agonists inhibit neuropathy-induced mechanical hypersensitivity in animal models.
Celik, Melih O. +3 more
core +2 more sources
Effects of Central Administration of Opioid Peptides, Vasotocin, Mesotocin, and Corticotrophin-Releasing Factor on Water Intake in Chicks [PDF]
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
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
Adoptive transfer of M2 macrophages reduces neuropathic pain via opioid peptides. [PDF]
During the inflammation which occurs following nerve damage, macrophages are recruited to the site of injury. Phenotypic diversity is a hallmark of the macrophage lineage and includes pro-inflammatory M1 and anti-inflammatory M2 populations.
Pannell M +6 more
europepmc +2 more sources
Endogenous opioid peptides in the descending pain modulatory circuit. [PDF]
Bagley EE, Ingram SL.
europepmc +2 more sources
Downregulation of the endogenous opioid peptides in the dorsal striatum of human alcoholics. [PDF]
The endogenous opioid peptides dynorphins and enkephalins may be involved in brain-area specific synaptic adaptations relevant for different stages of an addiction cycle.
Sarkisyan D +10 more
europepmc +2 more sources

