(+)-Borneol

(+)-Borneol is a bicyclic monoterpene and a stereoisomer of (–)-borneol (Item No. 23468) that has been found in various plants, including S. tomentosa, and has diverse biological activities including analgesic, neuroprotective, antioxidant, and antimicrobial properties.^1,2,3,4 (+)-Borneol is a positive allosteric modulator of α₁β₂γ_2L subunit-containing GABA_A receptors (EC₅₀ = 248 μM for human recombinant receptors).¹ It dose-dependently increases the paw withdrawal threshold following segmental spinal nerve ligation surgery or intraplantar injection of complete Freund's adjuvant (CFA) in mouse paw.² (+)-Borneol (100 μM) inhibits increases in reactive oxygen species (ROS) levels and cytotoxicity in SH-SY5Y neuroblastoma cells incubated with amyloid-β (1-42) (Aβ42; Item No. 20574).³ It also inhibits the growth of Gram-positive and Gram-negative bacteria in vitro, including E. coli, S. aureus, P. aeruginosa, P. vulgaris, and S. typhimurium (MICs = 125-250 μg/mL).⁴ Formulations containing (+)-borneol have been used as fragrance ingredients.

WARNING This product is not for human or veterinary use.

1. Granger, R.E., Campbell, E.L., and Johnston, G.A.R. (+)- And (–)-borneol: Efficacious positive modulators of GABA action at human recombinant α1β₂γ2L GABA_A receptors. Biochem. Pharmacol. 69(7), 1101-1111 (2005).

2. Jiang, J., Shen, Y.Y., Li, J., et al. (+)-Borneol alleviates mechanical hyperalgesia in models of chronic inflammatory and neuropathic pain in mice. Eur. J. Pharmacol. 757, 53-58 (2015).

3. Hur, J., Pak, S.C., Koo, B.S., et al. Borneol alleviates oxidative stress via upregulation of Nrf2 and Bcl-2 in SH-SY5Y cells. Pharm. Biol. 51(1), 30-35 (2013).

4. Tabanca, N., Kirimer, N., Demirci, B., et al. Composition and antimicrobial activity of the essential oils of Micromeria cristata subsp. phrygia and the enantiomeric distribution of borneol. J. Agric. Food Chem. 49(9), 4300-4303 (2001).