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Chemistry and Pharmacology of Alkylamides from Natural Origin.

ABSTRACT: Interest in alkylamide, as a class of compound, has grown tremendously in recent years. This interest is due to the many presumed benefits in food, cosmetics, and medicine. This review focuses on the different alkylamides naturally occurring in many plant species. Several methods have been employed for their identification as well as isolation and several in vitro and in vivo studies have revealed their therapeutic effects in various diseases. In general, alkylamides have been reported to have several biological activities and pharmacological effects which include immunomodulatory, antithrombotic, antimicrobial, antiviral, antioxidant, anti-inflammatory, analgesic, anticancer, antidiabetic, and antiprotozoal activities. Moreover, many studies have reported on their mechanisms of action, structure-activity relationship, pharmacokinetics, and toxicity. We herein present an updated report on the chemistry and pharmacology of alkylamides of natural origin.

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SUBMITTER: Elufioye TO

PROVIDER: S-EPMC7546144 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Chemistry and Pharmacology of Alkylamides from Natural Origin.

Elufioye Taiwo O TO Habtemariam Solomon S Adejare Adeboye A

Revista brasileira de farmacognosia : orgao oficial da Sociedade Brasileira de Farmacognosia 20201009 5

Interest in alkylamide, as a class of compound, has grown tremendously in recent years. This interest is due to the many presumed benefits in food, cosmetics, and medicine. This review focuses on the different alkylamides naturally occurring in many plant species. Several methods have been employed for their identification as well as isolation and several <i>in vitro</i> and <i>in vivo</i> studies have revealed their therapeutic effects in various diseases. In general, alkylamides have been repo ...[more]

PMID: 33071385

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Project description:Background and purposeA clinical need exists for targeted, safe, and effective sulfide donors. We recently reported that ammonium tetrathiomolybdate (ATTM) belongs to a new class of sulfide-releasing drugs. Here, we investigated the cellular uptake mechanisms of this drug class compared to sodium hydrosulfide (NaHS) and the effects of a thiometallate tungsten congener of ATTM, ammonium tetrathiotungstate (ATTT).Experimental approachIn vitro H2 S release was determined by headspace gas sampling of vials containing dissolved thiometallates. Thiometallate and NaHS bioactivity was assessed by spectrophotometry-derived sulfhaemoglobin formation. Cellular uptake dependence on the anion exchange protein (AE)-1 was investigated in human red blood cells. ATTM/glutathione interactions were assessed by LC-MS/MS. Rodent pharmacokinetic and pharmacodynamic studies focused on haemodynamics and inhibition of aerobic respiration.Key resultsATTM and ATTT both exhibit temperature-, pH-, and thiol-dependence of sulfide release. ATTM/glutathione interactions revealed the generation of inorganic and organic persulfides and polysulfides. ATTM showed greater ex vivo and in vivo bioactivity over ATTT, notwithstanding similar pharmacokinetic profiles. Cellular uptake mechanisms of the two drug classes are distinct; thiometallates show dependence on AE-1, while hydrosulfide itself was unaffected by inhibition of this pathway.Conclusions and implicationsThe cellular uptake of thiometallates relies upon a plasma membrane ion channel. This advances our pharmacological knowledge of this drug class, and further supports their utility as cell-targeted sulfide donor therapies. Our results indicate that, as a more stable form, ATTT is better suited as a copper chelator. ATTM, a superior sulfide donor, may additionally participate in intracellular redox recycling.Linked articlesThis article is part of a themed section on Hydrogen Sulfide in Biology & Medicine. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.4/issuetoc.

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Chemistry and Pharmacology of Alkylamides from Natural Origin.

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Publications

Chemistry and Pharmacology of Alkylamides from Natural Origin.

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