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Antioxidants and a new dihydroisocoumarins from Polygala hongkongensis Hemsl.

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A new dihydroisocoumarins, 6-methoxy-8-hydroxy-3-(4-hydroxyphenyl)isochroman-1-one, named as hongkongenin (1), and seven known flavonoids were isolated from the methanol extract whole plant of Polygala hongkongensis Hemsl. Their structures were established on the basis of UV, IR, NMR, and MS

Xanthone glycosides from herbs of Polygala hongkongensis Hemsl and their antioxidant activities.

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Two new xanthone O-glycosides, polyhongkongenosides A (1) and B (2), together with four known xanthone glycosides, were isolated from the herbs of Polygala hongkongensis Hemsl. Their structures were elucidated on the basis of UV, IR, NMR, and MS spectral data. The antioxidant in vitro activities of

Polyphenols from Polygala spp. and their antioxidant activity.

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Members of Polygalaceae are known to contain a variety of different polyphenolic compounds such as xanthones, flavonoids, and biphenyl derivatives. Here, we report the isolation and structural characterization of two new phenol derivatives, named alpestrin (= 3,3',5'-trimethoxy[1,1'-biphenyl]-4-ol;

Antioxidant and anti-inflammatory activities of zinc oxide nanoparticles synthesized using Polygala tenuifolia root extract.

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The exploitation of various plant materials for the green synthesis of nanoparticles is considered an eco-friendly technology because it does not involve toxic chemicals. In this study, zinc oxide nanoparticles (ZnO NPs) were synthesized using the root extract of Polygala tenuifolia. Synthesized ZnO

Antioxidant activity of oligosaccharide ester extracted from Polygala tenuifolia roots in senescence-accelerated mice.

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The constituents of the ethanol extract from the root of Polygala tenuifolia Willd. (Polygalaceae) were investigated for antioxidant activity in senescence-accelerated mice. Consequently, two relevant samples were obtained, a fraction separated by macroporous resin (YZ-OE), and a major pure crystal

Polygala tenuifolia: a source for anti-Alzheimer's disease drugs

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Context: Alzheimer's disease (AD) is a chronic neurodegenerative disease that originates from central nervous system lesions or recessions. Current estimates suggest that this disease affects over 35 million people worldwide. However, lacking effective drugs is the biggest handicap in

Neuroprotection and spatial memory enhancement of four herbal mixture extract in HT22 hippocampal cells and a mouse model of focal cerebral ischemia.

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BACKGROUND Four traditional Korean medicinal herbs which act in retarding the aging process, Polygonum multiflorum Thunb., Rehmannia glutinosa (Gaertn) Libosch., Polygala tenuifolia Willd., and Acorus gramineus Soland., were prepared by systematic investigation of Dongeuibogam (Treasured Mirror of

Gastroprotective activity of the hydroalcoholic extract obtained from Polygala paniculata L. in rats.

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The possible gastroprotective effects of the hydroalcoholic extract of Polygala paniculata in rats have been evaluated. We have investigated the effects of this hydroalcoholic extract on acute lesions induced by ethanol (70%, p.o.) and indomethacin (20 mg kg(-1), s.c.). Its influence on mucus

Protective role of tenuigenin on sepsis-induced acute kidney injury in mice.

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Acute kidney injury (AKI) is a severe complication of sepsis, which largely contributes to the associated high mortality rate. Tenuigenin (TNG) is a natural product isolated from Polygala tenuifolia root, which possesses anti-inflammatory and anti-oxidant properties. The present study investigated

Protective effects of tenuigenin on lipopolysaccharide and d-galactosamine-induced acute liver injury.

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Tenuigenin (TEN), a major active component of polygala tenuifolia root, has been reported to have a number of biological properties, such as anti-oxidative and anti-inflammatory activities. However, the protective effect of TEN on acute liver injury has not yet been reported. This research aims to

Chinese herbs for dementia diseases.

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In the last twenty years a considerable body of information has accumulated on the chemical constituents of Chinese herbs and their therapeutic potential. Our evaluation/systematic review [1, 2] of well-designed, randomized double blind controlled trials on Chinese herbal medicines beneficial for

Bajitianwan attenuates D-galactose-induced memory impairment and bone loss through suppression of oxidative stress in aging rat model

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Ethnopharmacological relevance: Osteoporosis and Alzheimer's disease (AD) are both senile diseases, which are closely related to oxidative stress. Bajitianwan (BJTW) is a classic Chinese formulation consisting of seven herbal drugs: the

Anticancer potentials of root extract of Polygala senega against benzo[a]pyrene-induced lung cancer in mice.

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OBJECTIVE To evaluate anticancer potentials of Polygala senega on lung cancer induced by benzo[a]pyrene (B[a]P) in mice. METHODS Swiss albino mice were divided into five groups with each containing six animals. Group 1 served as control, and the animals received olive oil as vehicle. Group 2 animals

Memory-Enhancing Effects of the Crude Extract of Polygala tenuifolia on Aged Mice.

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Learning and memory disorders arise from distinct age-associated processes, and aging animals are often used as a model of memory impairment. The root of Polygala tenuifolia has been commonly used in some Asian countries as memory enhancer and its memory improvement has been reported in various

Anti-amnesic effect of Chong-Myung-Tang on scopolamine-induced memory impairments in mice.

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OBJECTIVE Chong-Myung-Tang (CMT) consisted of Acorus gramineus Soland, Polygala tenuifolia Willdenow, and Poria cocos Wolf is one of the traditional Korean herbal medicines used for the therapy of learning and memory improvement. The present study was investigated the effect of CMT on learning and

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