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Neutron diffraction measurements have been utilized to study the effects of delta 9-tetrahydrocannabinol (delta 9-THC) and delta 8-tetrahydrocannabinol (delta 8-THC) incorporated in phospholipid membranes of dipalmitoylphosphatidylcholine (DPPC). Low-angle diffraction indicated that these
N-Acylethanolamine phospholipids (NAPEs) serve as endogenous precursors of N-acylethanolamines (NAEs), e.g. N-arachidonoylethanolamine (anandamide) and N-palmitoylethanolamine that are endogenous ligands of cannabinoid receptors. Under physiological conditions, NAPE is found in very low
The phospholipid bilayer plays a central role in the lifecycle of the endogenous cannabinoid, N-arachidonoylethanolamine (anandamide, AEA). Therefore, the orientation and location of AEA in the phospholipid bilayer with respect to key membrane associated proteins, is a central issue in understanding
Direct analysis of Δ9-tetrahydrocannabinol (THC) and other cannabinoids in crude acetonitrile extracts of whole blood by liquid chromatography-tandem mass spectrometry using pneumatically assisted electrospray ionization (LC-ESI-MS-MS) was subjected to pronounced ion suppression from co-eluting
G protein-coupled receptors (GPCRs) play critical physiological and therapeutic roles. The human cannabinoid 1 GPCR (hCB1) is a prime pharmacotherapeutic target for addiction and cardiometabolic disease. Our prior biophysical studies on the structural biology of a synthetic peptide representing the
Cannabinoid receptor 1 (CB1) mediates the functional responses of Δ9-tetrahydrocannabinol. Although progress has been made in understanding cannabinoid binding and receptor activation, detailed knowledge of the dynamics involved in the activation mechanism of CB1 is lacking. Here, we use
The effects of four cannabinoids on the physical properties of brain synaptic plasma membranes (SPM), lipid extracts of SPM and phospholipid vesicles were evaluated using fluorescence probes. In vitro, the psychoactive cannabinoids, delta 9-tetrahydrocannabinol (delta 9-THC) and 11-hydroxyl-delta
Elucidation of the molecular mechanisms of activation of G protein-coupled receptors (GPCRs) is among the most challenging tasks for modern membrane biology. For studies by high resolution analytical methods, these integral membrane receptors have to be expressed in large quantities, solubilized
Human cannabinoid type 2 (CB(2)) receptor expressed in Escherichia coli was purified and successfully reconstituted in the functional form into lipid bilayers composed of POPC, 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine, 1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-L-serine (POPS), and
Acute renal infarction usually occurs in patients with severe atherosclerosis or valvular heart disease. We here report a 42-year Saudi male who presented with severe abdominal pain nausea and vomiting associated with hematuria, after heavy smoking of marijuana. Computed tomography abdomen revealed
The recently discovered endogenous agonist for the cannabinoid receptor, anandamide (arachidonylethanolamide), can be formed enzymatically by the condensation of arachidonic acid with ethanolamine. 5Z,8Z,11Z-Eicosatrienoic acid (mead acid) has been found to substitute for arachidonic acid in the
Arachidonylethanolamide (AEA) isolated from porcine brain binds to cannabinoid receptors, mimics cannabinoid pharmacologic effects, and has been proposed as an endogenous cannabinoid receptor ligand. Demonstration of co-distribution of AEA and cannabinoid receptors in various brain regions could
Little direct information is available regarding the influence of membrane environment on transmembrane (TM) G-protein-coupled receptor (GPCR) conformation and dynamics. The human CB1 cannabinoid receptor (hCB1) is a prominent GPCR pharmacotherapeutic target in which helix 7 appears critical to
2-arachidonoylglycerol (2-AG) is an endogenous ligand for the cannabinoid receptors with a variety of potent biological activities. In this study, we first examined the effects of potassium-induced depolarization on the level of 2-AG in rat brain synaptosomes. We found that a significant amount of
Marijuana has been used as a traditional medicine and a pleasure-inducing drug for thousands of years around the world, especially in Asia. Delta(9)-tetrahydrocannabinol, major psychoactive component of marijuana, has been shown to interact with specific cannabinoid receptors, thereby eliciting a