Results 21 to 30 of about 1,820,241 (196)

Opioids and opioid receptors; understanding pharmacological mechanisms as a key to therapeutic advances and mitigation of the misuse crisis

BJA Open, 2023
Opioids are a mainstay in acute pain management and produce their effects and side effects (e.g., tolerance, opioid-use disorder and immune suppression) by interaction with opioid receptors.
David G. Lambert
doaj   +1 more source

Loperamide Inhibits Tachykinin NK3-Receptor-Triggered Serotonin Release Without Affecting NK2-Receptor-Triggered Serotonin Release From Guinea Pig Colonic Mucosa

Journal of Pharmacological Sciences, 2005
The effect of loperamide on tachykinin NK2- and NK3-receptor-mediated 5-HT outflow from guinea pig colonic mucosa was investigated in vitro. The selective tachykinin NK2-receptor agonist [β-Ala8]-neurokinin A4–10 (βAla-NKA) or the selective NK3-receptor ...
Shu-ichi Kojima, Masashi Ikeda, Yuichiro Kamikawa   +2 more
doaj   +1 more source

Toll-Like Receptor 4 (TLR4)/Opioid Receptor Pathway Crosstalk and Impact on Opioid Analgesia, Immune Function, and Gastrointestinal Motility

Frontiers in Immunology, 2020
Toll-like receptor 4 (TLR4) recognizes exogenous pathogen-associated molecular patterns (PAMPs) and endogenous danger-associated molecular patterns (DAMPs) and initiates the innate immune response.
Peng Zhang, Meirong Yang, Chunhua Chen, Liu Liu, Xinchuan Wei, Si Zeng   +5 more
doaj   +1 more source

Chronic morphine treatment attenuates cell growth of human BT474 breast cancer cells by rearrangement of the ErbB signalling network. [PDF]

, 2013
There is increasing evidence that opioid analgesics may interfere with tumour growth. It is currently thought that these effects are mediated by transactivation of receptor tyrosine kinase (RTK)-controlled ERK1/2 and Akt signalling.
Weingaertner, Inka Regine, Sarah Koutnik, Inka Regine Weingaertner, Koutnik, Sarah, Hermann Ammer, Ammer, Hermann   +5 more
core   +1 more source

Selective κ opioid antagonists nor-BNI, GNTI and JDTic have low affinities for non-opioid receptors and transporters.

PLoS ONE, 2013
BackgroundNor-BNI, GNTI and JDTic induce selective κ opioid antagonism that is delayed and extremely prolonged, but some other effects are of rapid onset and brief duration.
Thomas A Munro, Xi-Ping Huang, Carmela Inglese, Maria Grazia Perrone, Ashlee Van't Veer, F Ivy Carroll, Cécile Béguin, William A Carlezon, Nicola A Colabufo, Bruce M Cohen, Bryan L Roth   +10 more
doaj   +1 more source

The opioid receptor selectivity for trimebutine in isolated tissues experiments and receptor binding studies. [PDF]

, 1990
Differences of affinity ot and selectivity for trimebutine between peripheral and central opioid receptors have been investigated. Trimebutine inhibited electrically induced contraction of guinea-pig ileum (GPI) and mouse vas deferens (MVD) but not of ...
KANETO, Hiroshi, WATANABE, Joe, Hiroshi KANETO, Joe WATANABE, TAKAHASHI, Masakatsu, Masakatsu TAKAHASHI   +5 more
core   +1 more source

Pharmacological Profiles of Oligomerized μ-Opioid Receptors

Cells, 2013
Opioids are widely prescribed pain relievers with multiple side effects and potential complications. They produce analgesia via G-protein-protein coupled receptors: μ-, δ-, κ-opioid and opioid receptor-like 1 receptors.
Ing-Kang Ho, Cynthia Wei-Sheng Lee
doaj   +1 more source

Bulleyaconitine A Inhibits Visceral Nociception and Spinal Synaptic Plasticity through Stimulation of Microglial Release of Dynorphin A

Neural Plasticity, 2020
Background. Visceral pain is one of the most common types of pain and particularly in the abdomen is associated with gastrointestinal diseases. Bulleyaconitine A (BAA), isolated from Aconitum bulleyanum, is prescribed in China to treat chronic pain.
Sheng-Nan Huang, Jinbao Wei, Lan-Ting Huang, Pei-Jun Ju, Jinghong Chen, Yong-Xiang Wang   +5 more
doaj   +1 more source

Role of central opioid receptors on serotonin-Induced hypophagia in the neonatal broilers [PDF]

The Iranian Journal of Veterinary Science and Technology, 2022
Serotonin (5-HT) plays an underpinning role in appetite regulation and the opioid system has a role in the modulation of the ingestion behavior in birds.
Behrouz Rahmani, Kimia Mahdavi, Morteza Zendedel kheybari, Mina Khodadadi, Maryam Keshavarz, Majid Shahabi, Ali Baghbanzadeh   +6 more
doaj   +1 more source

Ligand-Specific Regulation of the Endogenous Mu-Opioid Receptor by Chronic Treatment with Mu-Opioid Peptide Agonist [PDF]

, 2013
Since the discovery of the endomorphins (EM), the postulated endogenous peptide agonists of the mu-opioid receptors, several analogues have been synthesized to improve their binding and pharmacological profiles.
Murányi Marianna, Szűcs, Mária, Dochnal Roberta, Kicsi Emese, Kicsi, Emese Gabriella, Fábián Gabriella, Szabó Gyula, Szabó, Gyula, Zentai, András, Bozó, Beáta, Fábián, Gabriella, Birkás Erika, Cinar Resat, Bozó Bea, Birkás, Erika, Kékesi Orsolya Sára, Cinar, Resat, Tóth, Géza, Mácsai Mónika, Mácsai, Mónika, Kékesi, Orsolya, Dochnal, Roberta Beatrix, Tóth Géza, Szűcs Mária, Murányi, Marianna, Zentai András   +25 more
core   +2 more sources