Publications by authors named "Petr Jirasek"

Objective: The aim of this study was to: (1) evaluate the anti-inflammatory effects of cannabidiol (CBD) on primary cultures of human gingival fibroblasts (HGFs) and (2) to clinically monitor the effect of CBD in subjects with periodontitis.

Background: The use of phytocannabinoids is a new approach in the treatment of widely prevalent periodontal disease.

Materials And Methods: Cannabinoid receptors were analyzed by western blot and interleukin production detected using enzyme immunoassay.

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Cannabidiol (CBD), a non-psychotropic cannabinoid produced by the genus Cannabis, is a phytoceutical that activates the endocannabinoid system (ECS) through binding to CB1 and CB2 receptors. The ECS is involved in cellular homeostasis and regulates metabolic processes in virtually all mammalian tissues. Published studies on CBD focus, inter alia, on its use in prophylaxis and as an anti-inflammatory agent.

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Article Synopsis
  • * Researchers used Click chemistry to identify proteins that bind with the phytochemical xanthohumol (XN) and found that it attaches to Keap1 and decreases the activity of glucose-6-phosphate dehydrogenase (G6PDH).
  • * The findings suggest that xanthohumol affects various biological processes by covalently modifying proteins that have reactive cysteine residues.
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A strategy for the synthesis of natural and non-natural 5-deoxy-6,7-dihydrocurcuminoids (diarylheptanoids) was developed for the preparation of 14 compounds with varying aromatic substituent patterns and a different functionality in the aliphatic seven-carbon chain. The in vitro protective activity against glutamate-induced neuronal cell death was examined in the murine hippocampal cell line HT-22 to find structural motifs responsible for neuroprotective effects in vitro. Among the tested compounds the ferulic acid-like unit, present in the structures of (E)-1,7-bis(4-hydroxy-3-methoxyphenyl)hept-1-en-3-one (5) and (E)-1-(4-hydroxy-3-methoxyphenyl)-7-(4-hydroxyphenyl)hept-1-en-3-one (7), appeared to be an important feature for protection against glutamate-induced neurotoxicity.

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