Results 11 to 20 of about 87,734 (315)

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   +1 more source

Inhibition of activity of GABA transporter GAT1 by δ-opioid receptor [PDF]

, 2012
Analgesia is a well-documented effect of acupuncture. A critical role in pain sensation plays the nervous system, including the GABAergic system and opioid receptor (OR) activation.
Fucke, Thomas, Schwarz, Wolfgang, Xu, Nanjie, Pu, Lu, Pei, Gang, Gu, Quanbao, Xia, Peng, Ren, Shuanglai   +7 more
core   +1 more source

Clinical opioids differentially induce co-internalization of μ- and δ-opioid receptors

Molecular Pain, 2018
Opioid receptors play an important role in mediating the spinal analgesia. The μ-opioid receptor is the major target of opioid drugs widely used in clinics.
Fenghua Bao, Chang-Lin Li, Xu-Qiao Chen, Ying-Jin Lu, Lan Bao, Xu Zhang   +5 more
doaj   +1 more source

Modification of κ-Opioid Receptor Agonist-Induced Antinociception by Diabetes in the Mouse Brain and Spinal Cord

Journal of Pharmacological Sciences, 2005
The supraspinal and spinal antinociceptive effects of several κ-opioid receptor agonists were examined in diabetic and non-diabetic mice using the tail-flick assay. The antinociception induced by intrathecal (i.t.), but not intracerebroventricular (i.c.v.
Masahiro Ohsawa, Junzo Kamei
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

Functional modulation of human delta opioid receptor by neuropeptide FF

BMC Neuroscience, 2005
Background Neuropeptide FF (NPFF) plays a role in physiological pain sensation and opioid analgesia. For example, NPFF potentiates opiate-induced analgesia and the delta opioid receptor antagonist naltrindole inhibits NPFF-induced antinociception.
Panula Pertti, Änkö Minna-Liisa
doaj   +1 more source

In Vitro Analyses of Spinach-Derived Opioid Peptides, Rubiscolins: Receptor Selectivity and Intracellular Activities through G Protein- and β-Arrestin-Mediated Pathways

Molecules, 2021
Activated opioid receptors transmit internal signals through two major pathways: the G-protein-mediated pathway, which exerts analgesia, and the β-arrestin-mediated pathway, which leads to unfavorable side effects. Hence, G-protein-biased opioid agonists
Yusuke Karasawa, Kanako Miyano, Hideaki Fujii, Takaaki Mizuguchi, Yui Kuroda, Miki Nonaka, Akane Komatsu, Kaori Ohshima, Masahiro Yamaguchi, Keisuke Yamaguchi, Masako Iseki, Yasuhito Uezono, Masakazu Hayashida   +12 more
doaj   +1 more source

Computational Methods for Understanding the Selectivity and Signal Transduction Mechanism of Aminomethyl Tetrahydronaphthalene to Opioid Receptors

Molecules, 2022
Opioid receptors are members of the group of G protein-couple receptors, which have been proven to be effective targets for treating severe pain. The interactions between the opioid receptors and corresponding ligands and the receptor’s activation by ...
Peng Xie, Junjie Zhang, Baiyu Chen, Xinwei Li, Wenbo Zhang, Mengdan Zhu, Wei Li, Jianqi Li, Wei Fu   +8 more
doaj   +1 more source

Opioid Receptor-Mediated and Non-Opioid Receptor-Mediated Roles of Opioids in Tumour Growth and Metastasis

Frontiers in Oncology, 2021
Opioids are administered to cancer patients in the period surrounding tumour excision, and in the management of cancer-associated pain. The effects of opioids on tumour growth and metastasis, and their consequences on disease outcome, continue to be the ...
Claudia A. Scroope, Zane Singleton, Markus W. Hollmann, Marie-Odile Parat   +3 more
doaj   +1 more source

Lack of μ-Opioid Receptor-Mediated G-Protein Activation in the Spinal Cord of Mice Lacking Exon 1 or Exons 2 and 3 of the MOR-1 Gene

Journal of Pharmacological Sciences, 2003
: The G-protein activation induced by μ-opioid receptor agonists was determined in spinal cord membranes from two types of μ-opioid receptor knockout mice: mice with a disruption of exon 1 (MOR (Exon 1)-KO) or exons 2 and 3 (MOR (Exons 2 and 3)-KO) of ...
Hirokazu Mizoguchi, Hsiang-En Wu, Minoru Narita, Ichiro Sora, F. Scott Hall, George R. Uhl, Horace H. Loh, Hiroshi Nagase, Leon F. Tseng   +8 more
doaj   +1 more source