13 nəticələr
Petasites japonicus have been used since a long time in folk medicine to treat diseases including plague, pestilential fever, allergy, and inflammation in East Asia and European countries. Bioactive compounds that may prevent and treat infectious diseases are identified based on their ability
A new bakkenolide and a known one were isolated from Petasites tatewakianus. The structure of the new compound was elucidated on the basis of spectroscopic methods including IR, EIMS, HRESIMS, 1D and 2D NMR, and the known compound was established by single crystal X-ray structural analysis. The in
Leukemia has been the third type of cancer killing many people across the world. Bakkenolide A (Bak), extracted from Petasites tricholobus, has been suggested to against cancer and display protective effects on inflammatory cytokines formation. And increasing evidences suggest that histone
Thirty-two new bakkenolides, bakkenolides-Db (1)--Dh(7), -Fa(8), -Fb(9), -I(10)--M(14), -Na(15), -Nb(16), -O(17)--T(22), -Ua (23), -Ub(24), -V(25)--X(27), -Ya(28), -Yb(29), -Za(30), -Zb(31) and -III(32), from the roots of Petasites formosanus together with thirty known compounds were isolated. The
Because platelet-activating factor (PAF, 1-O-alkyl-2-acetyl-sn-glycero-3-phosphocholine) participates in many physiopathological responses, including inflammatory reaction, endotoxic shock, allergic diseases and platelet aggregation, PAF-receptor antagonists are important in the treatment of these
Four novel bakkenolides - bakkenolide-Ia ( 1), bakkenolide-IIa ( 2), bakkenolide-IIIa ( 3) and bakkenolide-IVa ( 4) - were isolated from the extract of the rhizome of Petasites tricholobus. The structures were characterized by using NMR ( (1)H, (13)C, (1)H- (1)H COSY, HMQC, HMBC, and NOESY) and mass
Abnormal neuroinflammatory responses have diverse roles in neuronal death, oxidative stress and neurodegenerative diseases, such as Alzheimer's and Parkinson's disease. Microglia regulate these responses via molecular signaling cascades that involve inflammatory cytokines and complement proteins.
OBJECTIVE
To elucidate the anti-allergic and anti-inflammatory effects of Petasites genus, we studied the effects of several compounds isolated from Petasites japonicas leaves.
METHODS
Bakkenolide B was isolated from Petasites japonicus leaves. Antigen-induced degranulation was measured in RBL-2H3
The anti-allergic effect of total bakkenolides from the rhizome of Petasites tricholobus (BAPT) was evaluated in an ovalbumin-induced allergic rhinitis model in male Wistar rats. The major components of the bakkenolide fraction are bakkenolide-D, bakkenolide-B, bakkenolide-IIIa and bakkenolide-IVa,
BACKGROUND
The giant butterbur Petasites japonicus is used to treat asthma and allergic diseases in traditional Korean, Japanese, and Chinese medicine.
OBJECTIVE
To elucidate the anti-allergic effect of Petasites genus, we studied effects of several compounds from Petasites japonicus leaves and
A short review of our recent research on the essential oil phytochemical composition of Petasites albus (L.) Gaertn. and Petasites hybridus (L.) G. Gaertn., B. Mey. & Scherb. (Asteraceae) as well as on the oils of Globularia cordifolia L., Globularia meridionalis (Podp.) O. Schwarz and
Petasites tatewakianus is an edible plant belonging to the family Compositae. In our continuous search for NO inhibitors, which may be useful for the development of anti-inflammatory agents, the chemical constituents of the leaves of the edible plant P. tatewakianus were investigated. This
A new sesquiterpene, bakkenolide-Ⅵa (1), was isolated from the rhizome of Petasites japonicas (Sieb. et Zucc.) Maxim. The structure was characterized on the basis of various NMR ((1)H, (13)C, (1)H-(1)H COSY, HMQC, HMBC and NOESY) and mass spectrometry data. Bakkenolide-Ⅵa showed potent cerebral