Results 61 to 70 of about 2,911,994 (243)

Identification of transmembrane domains that regulate spatial arrangements and activity of prokineticin receptor 2 dimers [PDF]

open access: yes, 2014
The chemokine prokineticin 2 (PK2) activates its cognate G protein-coupled receptor (GPCR) PKR2 to elicit various downstream signaling pathways involved in diverse biological processes.
Caltabiano, G   +3 more
core   +1 more source

βγ G-proteins, but not regulators of G-protein signaling 4, modulate opioid-induced respiratory rate depression

open access: yesFrontiers in Physiology, 2023
Opioid medications are the mainstay of pain management but present substantial side-effects such as respiratory depression which can be lethal with overdose.
Jamil Danaf   +3 more
doaj   +1 more source

The G protein-coupled receptor heterodimer network (GPCR-HetNet) and its hub components [PDF]

open access: yes, 2014
G protein-coupled receptors (GPCRs) oligomerization has emerged as a vital characteristic of receptor structure. Substantial experimental evidence supports the existence of GPCR-GPCR interactions in a coordinated and cooperative manner.
Agnati, Luigi F   +12 more
core   +4 more sources

Visualizing endogenous opioid receptors in living neurons using ligand-directed chemistry

open access: yeseLife, 2019
Identifying neurons that have functional opioid receptors is fundamental for the understanding of the cellular, synaptic and systems actions of opioids. Current techniques are limited to post hoc analyses of fixed tissues. Here we developed a fluorescent
Seksiri Arttamangkul   +8 more
doaj   +1 more source

Opposite effects of neuropeptide FF on central antinociception induced by endomorphin-1 and endomorphin-2 in mice. [PDF]

open access: yesPLoS ONE, 2014
Neuropeptide FF (NPFF) is known to be an endogenous opioid-modulating peptide. Nevertheless, very few researches focused on the interaction between NPFF and endogenous opioid peptides. In the present study, we have investigated the effects of NPFF system
Zi-long Wang   +10 more
doaj   +1 more source

Increased nociceptin/orphanin FQ plasma levels in hepatocellular carcinoma [PDF]

open access: yes, 2004
AIM: The heptadecapeptide nociceptin alias orphanin FQ is the endogenous agonist of opioid receptor-like1 receptor. It is involved in modulation of pain and cognition.
Dunkel, Kinga   +7 more
core   +1 more source

Placenta ingestion by rats enhances d- and k-opioid antinociception, but suppresses m-opioid antinociception [PDF]

open access: yes, 2004
Ingestion of placenta or amniotic fluid produces a dramatic enhancement of centrally mediated opioid antinociception in the rat. The present experiments investigated the role of each opioid receptor type (m, d, k) in the antinociception-modulating ...
DiPirro, Jean M., Kristal, Dr. Mark B.
core  

Chronic opioid pretreatment potentiates the sensitization of fear learning by trauma. [PDF]

open access: yes, 2020
Despite the large comorbidity between PTSD and opioid use disorders, as well as the common treatment of physical injuries resulting from trauma with opioids, the ability of opioid treatments to subsequently modify PTSD-related behavior has not been well ...
Evans, Christopher J   +6 more
core   +1 more source

Single high-dose buprenorphine for opioid craving during withdrawal. [PDF]

open access: yes, 2018
BackgroundOpioid use disorder is one of the most prevalent addiction problems worldwide. Buprenorphine is used as a medication to treat this disorder, but in countries where buprenorphine is unavailable in combination with naloxone, diversion can be a ...
Ahmadi, Jamshid   +3 more
core   +2 more sources

Low intrinsic efficacy for G protein activation can explain the improved side effect profiles of new opioid agonists

open access: yesScience Signaling, 2020
Low intrinsic efficacy can explain the reduced side effects of apparently biased μ-opioid receptor agonists. Opioids: Efficacy versus bias Because of its antinociceptive effects, the μ-opioid receptor (MOR) is an important target for pain management, but
A. Gillis   +21 more
semanticscholar   +1 more source

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