Results 31 to 40 of about 46,429 (222)
Exposure to exogenous enkephalins disrupts reproductive development in the Eastern lubber grasshopper, Romalea microptera (Insecta: Orthoptera). [PDF]
PLoS ONE, 2012 Enkephalins play a major role in reproductive physiology in crustaceans; however their role in reproductive development in insects is largely unknown. We investigated the effect of exposure to exogenous leucine-enkephalin (Leu-Enk), methionine-enkephalin
Sandeep Kumar +4 more
doaj +1 more source
An Effective and Safe Enkephalin Analog for Antinociception
Pharmaceutics, 2021 Opioids account for 69,000 overdose deaths per annum worldwide and cause serious side effects. Safer analgesics are urgently needed. The endogenous opioid peptide Leu-Enkephalin (Leu-ENK) is ineffective when introduced peripherally due to poor stability ...
K. K. DurgaRao Viswanadham +13 more
doaj +1 more source
Frontiers in Pharmacology, 2021 Addiction to cocaine is associated with dysfunction of the dopamine mesocortical system including impaired dopamine-2 receptor (D2r) signaling. However, the effects of chronic cocaine on neuronal adaptations in this system have not been systematically ...
Kevin Clare +7 more
doaj +1 more source
Three protected tetrapeptides [PDF]
, 1996 The structures of three protected tetrapeptides, containing the Boc-Gly-Gly-Phe-X-OMe chain, tert-butoxycarbonyl-glycy-glycl-phenylalanine-leucine methyl ester dihydrate, Boc-Gly-Gly-L-Phe-D-Leu-OMe, C25H38N4O7·2H2O, tert-butoxycarbonyl-glycy-glycl ...
Casalone, Gianluigi, Fenude, Emma
core +1 more source
THE DISTRIBUTION OF METHIONINE‐ENKEPHALIN AND LEUCINE‐ENKEPHALIN IN THE BRAIN AND PERIPHERAL TISSUES [PDF]
British Journal of Pharmacology, 1977 A method is described for the rapid extraction of opioid peptides from the brain and other tissues. The method is based on acid extraction of tissues followed by adsorption of the extract onto Amberlite XAD‐2 resin. Elution with methanol separates the enkephalins and α‐endorphin from β‐endorphin.Over 90% of the opioid peptide activity isolated from ...
Jeffery Hughes +2 more
openaire +5 more sources
Synthetic Analogue of Leu-Enkephalin Prevents Endothelial Dysfunction in vitro
Общая реаниматология, 2018 The purpose of the study was to determine the efficacy of a synthetic leu-enkephalin stabilized analogue to prevent damage of endothelial cells monolayer in vitro caused by serum samples from septic shock patients.Materials and methods.
O. A. Grebenchikov +8 more
doaj +1 more source
Neurobiology of Disease, 2002 In order to assess the role of striatal dopamine (DA) afferents in l-DOPA-induced dyskinesia, we have studied a large series of rats sustaining 2, 3, or 4 unilateral injections of 6-hydroxydopamine (6-OHDA) in the lateral striatum.
Christian Winkler +3 more
doaj +1 more source
Frontiers in Physiology, 2023 The present review considers the putative hormonal opioid peptides in birds. In birds and all other vertebrates, there are four opioid related genes encoding a series of peptides.
Krystyna Pierzchała-Koziec +1 more
doaj +1 more source
, 2012 Well-Tempered Metadynamics (WTmetaD) is an efficient method to enhance the reconstruction of the free-energy surface of proteins. WTmetaD guarantees a faster convergence in the long time limit in comparison with the standard metadynamics.
François Sicard +2 more
core +3 more sources
Biased Metropolis Sampling for Rugged Free Energy Landscapes [PDF]
, 2003 Metropolis simulations of all-atom models of peptides (i.e. small proteins) are considered. Inspired by the funnel picture of Bryngelson and Wolyness, a transformation of the updating probabilities of the dihedral angles is defined, which uses ...
Berg, Bernd A.
core +3 more sources