A large segment of the female population is affected by premenstrual syndrome (PMS) and menopausal symptoms. Limited medical treatments are available, some with severe adverse effects. Instead, many women have turned to botanical dietary supplements. Angelica sinensis (Oliv.) Diels is one of the most commonly used botanical dietary supplements for the relief of PMS and menopausal symptoms. Although the dried root of this plant, also known as Dong quai, has been used traditionally in China for centuries and is currently being used by many American women, its mechanisms of action are poorly understood. We hypothesize that Angelica sinensis can act through CNS receptors to exhibit beneficial effects in PMS and menopause. In this application, we propose to test this hypothesis by first evaluating the affinity of several chemically characterized Angelica sinensis extracts to the opiate and -aminobutyric acid (GABA)-A receptors. The extracts will be further tested for their activation of opiate receptors by measuring G protein activation and adenylyl cyclase inhibition and the activation of the GABA(A) receptor by determining GABA-gated Cl- influx in synaptosomes.
Aim 3 will determine the in vivo efficacy of two extracts in a rat model. Although these receptor-based binding and activity assays have been used in pharmacological studies, applying such molecular methods to study mechanisms of Angelica sinensis represents a new and innovative approach. Results from these studies will help to define the molecular mechanisms of action of Angelica sinensis. Such information will not only provide mechanistic evidence for the use of Angelica sinensis in relieving PMS and menopausal symptoms, but may also be used to biologically standardize an Angelica sinensis product for future clinical studies.

Public Health Relevance

A large segment of the female population is affected by premenstrual syndrome (PMS) and menopausal symptoms. Although Angelica sinensis (Oliv.) Diels is one of the most commonly used botanical dietary supplements for the relief of PMS and menopausal symptoms, little is known for its mechanisms. This application aims to apply molecular methods to study mechanisms of action of Angelica sinensis.

Agency
National Institute of Health (NIH)
Institute
National Center for Complementary & Alternative Medicine (NCCAM)
Type
Exploratory/Developmental Grants (R21)
Project #
5R21AT003677-02
Application #
7759628
Study Section
Special Emphasis Panel (ZAT1-PK (01))
Program Officer
Alekel, D Lee
Project Start
2009-02-01
Project End
2013-01-31
Budget Start
2010-02-01
Budget End
2013-01-31
Support Year
2
Fiscal Year
2010
Total Cost
$233,145
Indirect Cost
Name
University of Illinois at Chicago
Department
Pharmacology
Type
Schools of Pharmacy
DUNS #
098987217
City
Chicago
State
IL
Country
United States
Zip Code
60612