Results 21 to 30 of about 30,638 (285)

Challenges and new opportunities for detecting endogenous opioid peptides in reward

Addiction 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, Marwa O. Mikati, Ream Al-Hasani   +2 more
doaj   +1 more source

The Peptide PnPP-19, a Spider Toxin Derivative, Activates μ-Opioid Receptors and Modulates Calcium Channels

Toxins, 2018
The synthetic peptide PnPP-19 comprehends 19 amino acid residues and it represents part of the primary structure of the toxin δ-CNTX-Pn1c (PnTx2-6), isolated from the venom of the spider Phoneutria nigriventer.
Ana C. N. Freitas, Steve Peigneur, Flávio H. P. Macedo, José E. Menezes-Filho, Paul Millns, Liciane F. Medeiros, Maria A. Arruda, Jader Cruz, Nicholas D. Holliday, Jan Tytgat, Gareth Hathway, Maria E. de Lima   +11 more
doaj   +1 more source

An Engineered Endomorphin-2 Gene for Morphine Withdrawal Syndrome. [PDF]

PLoS ONE, 2016
An optimal therapeutics to manage opioid withdrawal syndrome is desired for opioid addiction treatment. Down-regulation of endogenous endomorphin-2 (EM2) level in the central nervous system after continuous morphine exposure was observed, which suggested
Fei-Xiang Wu, Yan He, Hui-Ting Di, Yu-Ming Sun, Rui-Rui Pan, Wei-Feng Yu, Renyu Liu   +6 more
doaj   +1 more source

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

Frontiers 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, Karnaker Reddy Tupally, Ajit Kandale, Peter J. Cabot, Harendra S. Parekh   +4 more
doaj   +1 more source

Food-inspired peptides from spinach Rubisco endowed with antioxidant, antinociceptive and anti-inflammatory properties

Food Chemistry: X, 2023
Rubiscolin-6 (amino acid sequence: YPLDLF) is a selective δ-opioid receptor peptide isolated from spinach Rubisco. Its synthetic analogue, peptide YPMDIV is the most potent described so far for its increased opioid activity, thus in this work it was ...
Lorenza Marinaccio, Gokhan Zengin, Stefano Pieretti, Paola Minosi, Edina Szucs, Sandor Benyhe, Ettore Novellino, Domiziana Masci, Azzurra Stefanucci, Adriano Mollica   +9 more
doaj   +1 more source

Heteromerization of μ-opioid receptor and cholecystokinin B receptor through the third transmembrane domain of the μ-opioid receptor contributes to the anti-opioid effects of cholecystokinin octapeptide

Experimental and Molecular Medicine, 2018
Pain medicine: Boosting the potency of opioid analgesics A hormone known to weaken the pain-relieving effects of opioid drugs does so because of interaction between the hormone receptor and the opioid receptor.
Yin Yang, Qian Li, Qi-Hua He, Ji-Sheng Han, Li Su, You Wan   +5 more
doaj   +1 more source

Concomitant duplications of opioid peptide and receptor genes before the origin of jawed vertebrates. [PDF]

PLoS ONE, 2010
BACKGROUND: The opioid system is involved in reward and pain mechanisms and consists in mammals of four receptors and several peptides. The peptides are derived from four prepropeptide genes, PENK, PDYN, PNOC and POMC, encoding enkephalins, dynorphins ...
Görel Sundström, Susanne Dreborg, Dan Larhammar   +2 more
doaj   +1 more source

Opioid peptides and metabolic regulation [PDF]

Diabetologia, 1988
La liaison entre opioides et obesite pourrait passer par des anomalies de l'insulino-secretion puisque une augmentation de la sensibilite des cellules B pancreatiques a la beta-endorphine a ete demontree chez les sujets obeses. Une profonde alteration du systeme opioide est presente dans le diabete sans que l'on puisse dire encore si cela represente un
GIUGLIANO, Dario, TORELLA R, LEFEBVRE PJ, D'ONOFRIO F.   +3 more
openaire   +4 more sources

Alum adjuvant is more effective than MF59 at prompting early germinal center formation in response to peptide-protein conjugates and enhancing efficacy of a vaccine against opioid use disorders

Human Vaccines & Immunotherapeutics, 2019
Opioid use disorders (OUD) and fatal overdoses are a national emergency in the United States. Therapeutic vaccines offer a promising strategy to treat OUD and reduce the incidence of overdose.
Christine Robinson, Carly Baehr, Shirdi E. Schmiel, Claudia Accetturo, Daniel L. Mueller, Marco Pravetoni   +5 more
doaj   +1 more source

A Bicyclic Analog of the Linear Peptide Arodyn Is a Potent and Selective Kappa Opioid Receptor Antagonist

Molecules
Kappa opioid receptor (KOR) antagonists have potential therapeutic applications in the treatment of stress-induced relapse to substance abuse and mood disorders.
Solomon A. Gisemba, Michael J. Ferracane, Thomas F. Murray, Jane V. Aldrich   +3 more
doaj   +1 more source