Cedrol is bioactive sesquiterpenes found in cedar essential oil and exert antiseptic, anti-inflammatory, antispasmodic, tonic, astringent, diuretic, sedative, insecticidal, and antifungal activities. Cedrol was found to be potent competitive inhibitors of CYP2B6-mediated bupropion hydroxylase . [1-3]
In Vitro
Cedrol is an anti-inflammatory constituent, anti-microbial ingredient and antibiosis agent[1]. Cedrol could accelerate fibroblast growth in a dose-dependent manner and increase the production of type 1 collagen and elastin. Phosphorylation of p42/44 extracellular signal-regulated kinase, p38 mitogen-activated protein kinase, and Akt are also markedly increased by the treatment of cedrol, indicating that cedrol stimulates ECM production[3]. Cedrol is a potent competitive inhibitor of CYP2B6-mediated bupropion hydroxylase with inhibition constant (Ki) value of 0.9 μM. It also inhibits CYP3A4-mediated midazolam hydroxylation with a Ki value of 3.4 μM while only weakly inhibits CYP2C8, CYP2C9, and CYP2C19 activities[2].
In Vivo
Cedrol can promote hair reproduction. It promotes hair regeneration and shortens the telogen phase of hair follicles after alopecia occurs. Cedrol may possess a latent ability of preventing damage to initiatory hair follicle and restoring the morphological characteristics of follicles after they have been damaged by chemotherapy. Cedrol is a PAF (platelet-activating factor) antagonist that can reduce or inhibit platelet aggregation, skin inflammation, and vascular disorders[1].
[1] Chen SS, et al. Environ Toxicol Pharmacol. 2016, 46:270-276. [2] Jeong HU, et al. J Toxicol Environ Health A. 2014, 77(22-24):1522-32. [3] Jin MH, et al. Ann Dermatol. 2012, 24(1):16-21.