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arachidonic acid/cannabis
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2-arachidonyl glycerol activates platelets via conversion to arachidonic acid and not by direct activation of cannabinoid receptors.
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BACKGROUND
There are conflicting views in the literature as to whether cannabinoids have an impact on platelet activity and to what extent cannabinoid receptors are involved. This is an important issue to resolve because platelet effects of putative therapeutic cannabinoid inhibitors and stimulators
2-Arachidonoyl-sn-glycero-3-phosphate, an arachidonic acid-containing lysophosphatidic acid: occurrence and rapid enzymatic conversion to 2-arachidonoyl-sn-glycerol, a cannabinoid receptor ligand, in rat brain.
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A substantial amount of lysophosphatidic acid (LPA) (15.66 nmol/g tissue) was found to occur in the brain isolated from rats killed in liquid nitrogen. We found that a significant portion of brain LPA was accounted for by the arachidonic acid-containing species (5.4%). We obtained evidence that both
New perspectives in the studies on endocannabinoid and cannabis: a role for the endocannabinoid-arachidonic acid pathway in drug reward and long-lasting relapse to drug taking.
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Growing evidence on the involvement of cannabinoids in the rewarding effects of various kinds of drugs of abuse has suggested that not only the classical dopaminergic and opioidergic, but also the most recently established endocannabinoid system is implicated in the brain reward system. Furthermore,
Phospholipase participation in cannabinoid-induced release of free arachidonic acid.
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The exposure of cells in culture to cannabinoids results in a rapid and significant mobilization of phospholipid bound arachidonic acid. In vivo, this effect has been observed as a rise in eicosanoid tissue levels that may account for some of the pharmacological actions of delta
Cannabinoid receptor binding and agonist activity of amides and esters of arachidonic acid.
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The cannabinoid receptor in brain (CB1) specifically binds delta 9-tetrahydrocannabinol, the predominant central nervous system-active component of marijuana. An eicosanoid found in brain, N-(2-hydroxyethyl)arachidonylamide (anandamide), binds to CB1 with similar affinity. This report considers
Cannabinoids influence lipid-arachidonic acid pathways in schizophrenia.
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Increasing evidence suggests modulating effects of cannabinoids on time of onset, severity, and outcome of schizophrenia. Efforts to discover the underlying pathomechanism have led to the assumption of gene x environment interactions, including premorbid genetical vulnerability and worsening effects
Behavioral suppression induced by cannabinoids is due to activation of the arachidonic acid cascade in rats.
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Tetrahydrocannabinol (THC) is the principle psychoactive ingredient of marijuana and produces various psychoactive effects through the brain cannabinoid (CB1) receptor. The CB1 receptor belongs to the seven-transmembrane domain family of G-protein-coupled receptors and is involved in the arachidonic
Arachidonic acid mediates non-capacitative calcium entry evoked by CB1-cannabinoid receptor activation in DDT1 MF-2 smooth muscle cells.
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Cannabinoid CB1-receptor stimulation in DDT1 MF-2 smooth muscle cells induces a rise in [Ca2+]i, which is dependent on extracellular Ca2+ and modulated by thapsigargin-sensitive stores, suggesting capacitative Ca2+ entry (CCE), and by MAP kinase. Non-capacitative Ca2+ entry (NCCE) stimulated by
The endogenous cannabinoid anandamide increases human airway epithelial cell permeability through an arachidonic acid metabolite.
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Injury to the bronchial epithelium in respiratory diseases such as asthma and COPD results in the loss of barrier function and an elevated sensitivity to environmental insults. An increased release of the endogenous cannabinoid, anandamide in response to inhalation of allergen in asthmatic patients
Receptor mediation in cannabinoid stimulated arachidonic acid mobilization and anandamide synthesis.
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Numerous reports have suggested that increased synthesis of eicosanoids is a significant effect of cannabinoids in several models including the human. To address the question of receptor mediation in this process we have carried out experiments using oligonucleotides that are antisense to the CB1
Transacylase-mediated and phosphodiesterase-mediated synthesis of N-arachidonoylethanolamine, an endogenous cannabinoid-receptor ligand, in rat brain microsomes. Comparison with synthesis from free arachidonic acid and ethanolamine.
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The levels of N-arachidonoylethanolamine (anandamide), an endogenous cannabinoid-receptor ligand, and a relevant molecule, N-arachidonoylphosphatidylethanolamine (N-arachidonoylPtdEtn), in rat brain were investigated using a newly developed sensitive analytical method. We found that rat brain
Prostaglandins and cannabis--VI. Release of arachidonic acid from HeLa cells by delta1-tetrahydrocannabinol and other cannabinoids.
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Regulation of nerve growth factor induced histamine and arachidonic acid release from rat mast cells by cannabinoids.
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Activation of platelets by the endocannabinoids 2-arachidonoylglycerol and virodhamine is mediated by their conversion to arachidonic acid and thromboxane A2, not by activation of cannabinoid receptors.
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[Neurobiology of endocannabinoids and central effects of tetrahydrocannabinol contained in indian hemp].
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Tetrahydrocannabinol, the main psychotropic component of Cannabis indica, is an addictive drug with multiple effects including both peripheral and central damages. All these effects are due to interference with endocannabinoidergic transmission. This endocannabinoid system subtly regulates many
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