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The gastric mucosa produces prostaglandins E2 (PGE2) and prostacyclin (PGI2), crucial in maintaining gastric health. They exert cytoprotective effects, including increasing bicarbonate secretion, releasing protective mucin, reducing gastric acid output, and preventing harmful vasoconstriction. These effects are mediated through various receptors, such as EP1, EP2, EP3, and EP4.
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Prostaglandin Extraction and Analysis in Caenorhabditis elegans
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Druggable Prostanoid Pathway.

Liudmila L Mazaleuskaya1,2, Emanuela Ricciotti3,4

  • 1Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.

Advances in Experimental Medicine and Biology
|September 7, 2020
PubMed
Summary
This summary is machine-generated.

Traditional NSAIDs and coxibs carry risks, prompting research into new drug targets within the prostanoid pathway. Novel therapies aim to improve safety and efficacy for pain, fever, and inflammation management.

Keywords:
CyclooxygenaseNSAIDProstaglandinProstanoid receptor agonist/antagonistProstanoidsmPGES-1 inhibitor

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Area of Science:

  • Biochemistry
  • Pharmacology
  • Lipid Metabolism

Background:

  • Prostanoids, derived from arachidonic acid, regulate key physiological and pathological processes.
  • Cyclooxygenase (COX) enzymes (COX-1 and COX-2) are central to prostanoid synthesis.
  • Traditional NSAIDs (tNSAIDs) and COX-2 selective inhibitors (coxibs) have limitations, including gastrointestinal and cardiovascular risks.

Purpose of the Study:

  • To review safety concerns associated with tNSAIDs and coxibs.
  • To explore novel drug targets in the prostanoid pathway.
  • To discuss emerging therapeutic strategies for managing pain, fever, and inflammation.

Main Methods:

  • Literature review of NSAID safety profiles.
  • Analysis of COX enzyme function and prostanoid pathway regulation.
  • Overview of current drug development targeting prostanoid synthases and receptors.

Main Results:

  • tNSAIDs cause gastrointestinal side effects; coxibs increase cardiovascular risks.
  • The prostanoid pathway offers diverse targets beyond COX enzymes.
  • Novel drug classes are under development, including NO- and H2S-releasing NSAIDs, synthase inhibitors, and receptor modulators.

Conclusions:

  • Safety issues with current NSAIDs necessitate alternative therapeutic approaches.
  • Targeting downstream effectors of COX enzymes presents promising avenues for safer anti-inflammatory and analgesic drugs.
  • The prostanoid pathway remains a critical focus for developing next-generation therapeutics.