Synthetic cannabinoids and endometrial stromal cell fate: Dissimilar effects of JWH-122, UR-144 and WIN55,212-2
- PMID:30502353
- DOI: 10.1016/j.tox.2018.11.006
Synthetic cannabinoids and endometrial stromal cell fate: Dissimilar effects of JWH-122, UR-144 and WIN55,212-2
Abstract
The emergence of synthetic cannabinoids (SCBs) as drugs of abuse in readily available "Spice" smoking blends has exposed users to much more potent cannabinoids than the phytocannabinoids present in Cannabis sativa L. Increasing reports of adverse reactions are emerging in the clinical literature. SCBs may disrupt the endocannabinoid signalling, which has been shown to be crucial within human endometrium remodelling process. Within this study, a telomerase-immortalised human endometrial stromal cell line (St-T1b) and primary human decidual fibroblasts (HdF) were used to determine the impact of SCBs JWH-122, UR-144 and WIN55,212-2 (WIN) on endometrial stromal cells. Our findings indicate that JWH-122 and UR-144 (0.01-25 μM) induce prompt ROS/RNS formation and endoplasmic reticulum (ER) stress without reduction in cell viability. Disturbances in the normal functions of the ER lead to cell stress response, which is after compensated with the increase in reduced/oxidized glutathione ratio (GSH/GSSG). Instead, WIN induces ER stress, mitochondrial dysfunction and apoptotic cell death. The addition of the CB1 antagonist AM281 significantly reduces the effects on cell viability, suggesting that CB1 plays a key role in WIN-induced apoptosis. Collectively, our data suggests that SCBs have dissimilar effects on human endometrial stromal cells and, thus, may impact human reproductive function through distinct mechanisms that are crucial for the understanding of the pathophysiological outcomes from its abuse.
Keywords: Antioxidant; Endocannabinoids; Synthetic cannabinoids; “spice”.
Copyright © 2018 Elsevier B.V. All rights reserved.
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