Abstract Title:

Lam Seed Oil Augments Pentobarbital-Induced Sleeping Behaviors in Mice via GABAergic Systems.

Abstract Source:

J Agric Food Chem. 2020 Mar 11 ;68(10):3149-3162. Epub 2020 Feb 28. PMID: 32062961

Abstract Author(s):

Wei-Liang Liu, Bai-Fen Wu, Jian-Hua Shang, Yun-Li Zhao, Ai-Xiang Huang

Article Affiliation:

Wei-Liang Liu


Lam. (MO), which is widely consumed as both food and herbal medicine in tropical and subtropical regions, has a wide spectrum of health benefits. Yet, whether the oil obtained from MO seeds could affect (improve) the sleep activity remains unclear. Herein, we used the locomotor activity, pentobarbital-induced sleeping, and pentetrazol-induced convulsions test to examine sedative-hypnotic effects (SHE) of MO oil (MOO) and explored the underlying mechanisms. Besides, the main components of MOO like oleic acid,β-Sitosterol, and Stigmasterol were also evaluated. The results showed that they possessed good SHE. Except for oleic acid and Stigmasterol, they could significantly elevate γ-amino butyric acid (GABA) and reduce glutamic acid (Glu) levels in the hypothalamus of mice. Moreover, SHE was blocked bypicrotoxin, flumazenil, and bicuculline, except for oleic acid, which could not be antagonized by picrotoxin. Molecular mechanisms showed that MOO and β-Sitosterol significantly upregulated the amount of protein-level expression of Glu decarboxylase-65 (GAD) andα-subunit of GABAreceptors in the hypothalamus of mice, not affecting GAD,γsubunits. These data indicated that MOO modulates sleep architectures via activation of the GABA-ergic systems.

Study Type : Animal Study

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