Reduction of plasma cholesterol by citrus flavonoids is associated with effects on specific liver functions related to lipid handling. In previous in vivo studies, polymethoxylated flavones (PMF) reduced plasma cholesterol levels at lower doses than required for flavanones. To delineate hepatic mechanisms that underlie this differential potency, we used HepG2 cells to quantitate effects on expr...

The intake of citrus fruits has been suggested as a way to prevent the development of some types of human cancer. Nitric oxide (NO) is closely associated with the processes of epithelial carcinogenesis. We attempted a search for NO generation inhibitors in Citrus unshiu. The active constituent was traced by an activity-guiding separation. NO and superoxide (O2-) generation was induced by a comb...

The exploration of naturally occurring phytochemicals with antitumor potential has been the focus many studies. Nobiletin, a polymethoxyflavone (PMF) exclusively derived from citrus peels, reported as promising candidate for prevention and/or treatment cancers. Additionally, multiple demethylated derivatives nobiletin in vivo biotransformation, including 3?-demethylnobiletin (3?-DMN), 4?-demeth...

Some citrus flavonoids have been reported to possess antioxidant activities that moderate endothelial dysfunction and show protective effects on cardiovascular disease. We have investigated the protective effects of nobiletin (5,6,7,8,3’,4’-hexamethoxy flavone) derived from the peel of Citrus depressa Hayata (Shiikuwasha), a citrus fruit produced in Okinawa prefecture in Japan on hypertension a...

Background and Objective: Anti-inflammatory property of nobiletin (NOB) is proven and neuroinflammation is involved in triggering and progression of neurodegenerative disorder such as Parkinson's disease (PD). PD is a neurodegenerative disorder characterized by motor and non-motor features including psychiatric symptoms such as depression and anxiety. The purpose of this study to investigate wh...

Alzheimer's disease (AD), the most common form of dementia among the elderly, is characterized by the progressive decline of cognitive function and has a detrimental impact worldwide. Despite intensive laboratory and clinical research over the last three decades, pharmacological options for the prevention and effective long-term treatment of AD are not currently available. Consequently, success...

Natural components continue to be an important source for the discovery and development of novel anticancer agents. Polymethoxyflavones are a class of flavonoids found in citrus fruits and medicinal plants used in traditional medicine. In the present study, the anticancer activity of the well-known nobiletin (5,6,7,8,3',4'-hexamethoxyflavone) was compared against its less studied structural iso...

Haizao Yuhu Decoction (HYD) has been used for approximately 500 years and is well-known in Traditional Chinese Medicine for its efficacy in the treatment of thyroid-related diseases. In this study, a rapid liquid chromatography-tandem mass spectrometry method was developed for the determination of liquiritin, naringin, hesperidin, peimine, liquiritigenin, glycyrrhizic acid, bergapten, nobiletin...

Nobiletin (NOB) chemically known as 5, 6, 7, 8, 3, 4-hexamethoxyflavone is a polymethoxylated flavonoid that predominantly found in the peel of citrus fruits. Animal studies and limited number clinical trials suggest NOB has multifunctional biological activities such protection against obesity related cardiometabolic disorders, neuroprotection, antidiabetic, anticancer, anti-allergy, antioxidan...