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- W2803757730 abstract "Nitric oxide (NO)-releasing nonsteroidal anti-inflammatory drugs (NSAIDs) have been developed to overcome the gastrointestinal and cardiovascular toxicity of NSAIDs, by chemically associating a NO-releasing moiety with commercial NSAIDs. Since increasing evidence supports that NSAIDs toxicity is related to their topical actions in membrane lipids, this work aims to evaluate the impact of adding a NO-releasing moiety to parent NSAIDs regarding their effect on lipid bilayers. Thus, the interactions of NO-indomethacin and indomethacin (parent drug) with 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) bilayers were described herein at pH 3.0 and 7.4. Diverse experimental techniques were combined to characterize the partitioning and location of drugs in DMPC bilayers, and to analyze their effect on the lipid phase transition and the bilayer structure and dynamics. The partitioning of NO-indomethacin into DMPC bilayers was similar to that of charged indomethacin and smaller than that of neutral indomethacin. Both drugs were found to insert the DMPC bilayer and the membrane location of indomethacin was pH-dependent. NO-indomethacin and indomethacin induced a decrease of the main phase transition temperature of DMPC. The effect of these drugs on the bilayer structure and dynamics was dependent on diverse factors, namely drug ionization state, drug:lipid molar ratio, temperature and lipid phase. It is noteworthy that NO-indomethacin induced more pronounced alterations in the biophysical properties of DMPC bilayers than indomethacin, considering equivalent membrane concentrations. Such modifications may have in vivo implications, particularly in the gastric mucosa, where NO-NSAIDs-induced changes in the protective properties of phospholipid layers may contribute to the occurrence of adverse effects." @default.
- W2803757730 created "2018-06-01" @default.
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- W2803757730 date "2018-09-01" @default.
- W2803757730 modified "2023-10-06" @default.
- W2803757730 title "Can NO-indomethacin counteract the topical gastric toxicity induced by indomethacin interactions with phospholipid bilayers?" @default.
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- W2803757730 doi "https://doi.org/10.1016/j.colsurfb.2018.05.019" @default.
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