N-phenylmaleimide derivatives as mimetic agents of the pro-inflammatory process: myeloperoxidase activation.
Journal Title: Pharmacological Reports - Year 2011, Vol 63, Issue 3
Abstract
Myeloperoxidase (MPO) is an important enzyme that catalyzes the reaction between hydrogen peroxide and chloride to generate hypochlorous acid, which oxidizes a range of biomolecules and has been associated with inflammatory diseases. The synthetic compounds N-phenylmaleimide (NFM) and 4-methyl-N-phenylmaleimide (Me-NFM) increased the MPO activity in vitro (of isolated enzyme and in isolated cells after animal treatment) and in vivo assays. MPO-induction may represent a good model system to investigate the molecular and cellular mechanisms of oxidative cell injury induced by activated neutrophils, and the interactions between damaging species involved in the respiratory burst.
Authors and Affiliations
Vânia Noldin, Silvana Vigil, Rafael De Liz, Valdir Cechinel-Filho, Tânia Fröde
Naturally appearing N-feruloylserotonin isomers suppress oxidative burst of human neutrophils at the protein kinase C level.
N-feruloylserotonin (N-f-5HT) isomers, isolated from seeds of Leuzea carthamoides (Wild) DC, inhibited dose-dependent oxidative burst in human whole blood and isolated neutrophils in vitro, which were measured by luminol...
Acute treatment with metformin improves cardiac function following isoproterenol induced myocardial infarction in rats.
It has been proposed that metformin exerts protective effects on ischemic hearts. In the present study, we evaluated the effects of metformin on cardiac function, hemodynamic parameters, and histopathological changes in...
Radiofrequency denervation with or without addition of pentoxifylline or methylprednisolone for chronic lumbar zygapophysial joint pain.
Radiofrequency neurolysis of lumbar medial branch is currently the only proven way to treat patients with chronic lumbar zygapophysial joint pain, however, in some patients it can cause transient postoperative pain due t...
Chronic impairment of the vagus nerve function leads to inhibition of dopamine but not serotonin neurons in rat brain structures.
BACKGROUNd: Recent clinical studies have shown that the dorsal motor nucleus of the vagus nerve is one of the brain areas that are the earliest affected by α-synuclein and Lewy body pathology in Parkinson's disease. This...
New conjugates of muramyl dipeptide and nor-muramyl dipeptide linked to tuftsin and retro-tuftsin derivatives significantly influence their biological activity.
The synthesis and biological activity of new conjugates of muramyl dipeptide (MDP) and nor-muramyl dipeptide (nor-MDP) with tuftsin and retro-tuftsin derivatives containing isopeptide bond between ε-amino group of lysine...