The endocannabinoid system expression in the female reproductive tract is modulated by estrogen.

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“The endocannabinoid system (ECS) is involved in several physiological events that resulted in a growing interest in its modulation. Moreover, the uterine levels of anandamide (AEA), the major endocannabinoid, must be tightly regulated to create proper embryo implantation conditions. However, there are no evidences about the regulation of AEA in uterus by estrogen.

Thus, the aim of this study is to elucidate whether estradiol benzoate (EB) and tamoxifen (TAM) administration to ovariectomized (OVX) rats can induce changes in the expression of cannabinoid receptors and AEA-metabolic enzymes in uterus by evaluating gene transcription and protein levels by qPCR, Western blot and immunohistochemistry.

In summary, these data collectively indicate that the expression of ECS components, as well as, the AEA and PGE2 levels in rat uterus is modulated by EB. Thus, estradiol may have a direct regulatory role in the modulation of ECS in female reproductive tissues.”

https://www.ncbi.nlm.nih.gov/pubmed/28743542

http://linkinghub.elsevier.com/retrieve/pii/S0960076017301887

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