Quantitative Determination of Bakkenolide D in Petasites japonicus and Farfugium japonicum by HPLC/UV

A quantitative analysis of bakkenolide D in the different parts of Petasites japonicus and Farfugium japonicum was performed by HPLC. A gradient HPLC elution system with a mobile phase consisting of water:acetonitrile solution (20:80 to 0:100 for 45 min) was followed and an INNO C₁₈ column was used for the chromatographic separation. The injection volume, flow rate, and UV detection were 10 µL, 1 mL/min, and 290 nm, respectively. Results show that both species showed the highest amount of bakkenolide D in the roots being 107.203 and 166.103 mg/g for P. japonicas and F. japonicum, respectively. Content analysis on the different parts of both plants displayed remarkably lower values which ranged from 0.403 – 4.419 and 7.252 – 32.614 mg/g for P. japonicas and F. japonicum, respectively. The results show that the roots of both plants are rich in bakkenolide D showing a promising use in the development of nutraceuticals and industrial application of the compound.

Therapeutic Effects of S-Petasin on Disease Models of Asthma and Peritonitis

To explore the anti-allergic and anti-inflammatory effects of extracts of Petasites genus, we studied the effects of s-petasin, a major sesquiterpene from Petasites formosanus (a butterbur species) on asthma and peritonitis models. In an ovalbumin-induced mouse asthma model, s-petasin significantly inhibited the accumulations of eosinophils, macrophages, and lymphocytes in bronchoalveolar fluids. S-petasin inhibited the antigen-induced degranulation of beta-hexosamidase but did not inhibit intracellular Ca2+ increase in RBL-2H3 mast cells. S-petasin inhibited the LPS induction of iNOS at the RNA and protein levels in mouse peritoneal macrophages. Furthermore, s-petasin inhibited the production of NO (the product of iNOS) in a concentration-dependent manner in the macrophages. Furthermore, in an LPS-induced mouse model of peritonitis, s-petasin significantly inhibited the accumulation of polymorpho nuclear and mononuclear leukocytes in peritoneal cavity. This study shows that s-petasin in Petasites genus has therapeutic effects on allergic and inflammatory diseases, such as, asthma and peritonitis through degranulation inhibition in mast cells, suppression of iNOS induction and production of NO in macrophages, and suppression of inflammatory cell accumulation.

Two new sulfated sesquiterpenoids from Petasites tricholobus / 药学学报

Two new sulfated sesquiterpenoids, megastigman-7-ene-3, 5, 6, 9-tetrol-3-O-β-D-6'-sulfonated-glucopyranoside (1) and 3-O-β-D-6'-sulfonated-glucopyranosyl-6-(3-oxo-2-butenylidenyl)-1, 1, 5-trimethylcyclohexan-5-ol (2), along with one known sesquitepenoid compound icariside B1 (3) were isolated from the whole herb of Petasites tricholobus Franch. Their structures were identified by their chemical and spectroscopic characters. All obtained compounds were tested for their cytotoxicity against four cancer cell lines.

The Differences in Preference for Vegetables among Primary School to University Students in Gyeongbuk Area / 대한지역사회영양학회지

OBJECTIVES: Vegetables are the most left over side dishes in school lunch programs. This study intended to analyze the differences in preference for vegetables among the students of different age groups in order to determine potential ways of increasing vegetable consumption in this study group. METHODS: A total of 308 primary to university students in Gyeongbuk area were recruited and a questionnaire-based survey was conducted. The preference score (7-Likert scale: very much dislike (1)~so-so (4)~like very much (7)) and intake frequency (5-Likert scale) of 48 kinds of vegetables in 4 vegetable groups, such as vegetable (fruit-, root-, leaf-, and stalk- vegetable), seaweeds, mushrooms, and kimchi were investigated, and data were analyzed by SPSS WIN (ver 12.0). RESULTS: The preference scores of vegetables except for seaweeds were significantly different among school groups, university was the highest, followed by high school. Primary and middle school students showed the lowest preference score, especially for leaf- and stalk- vegetables. The preference score for seaweeds was the highest of 5.28, followed by kimchi of 4.99. With regard to kimchis, the preference score was the highest in university', followed by high school, middle school, and primary school' was the lowest. The number of vegetables with < 4.0 preference score was the highest in primary school of 16, 15 in middle school, 11 in high school, and 7, the lowest in university. The vegetable with preference score of < 4.0 in all 4 school groups were mallow, chard, bud, radish leaf, mugwort, butterbur and sweet potato stalk. With regard to the intake frequency of vegetables, kimchis, an indispensable part of the Korean diet, was the highest of 2 times/day, followed by cooked vegetables of 1.5 times/day. The correlation coefficients between preference scores and intake frequencies were statistically significant in all groups of vegetables. As for the coefficient of variation (CV) of preference score, primary school' was the highest and university' was the lowest. The number of vegetables with high CV and high inexperience were highest in primary school students. CONCLUSIONS: Providing more opportunities for consuming a variety of vegetables, such as leaf- and stalk- vegetable, it may be possible to increase vegetable consumption, especially for the primary school students.

Efectividad del extracto estandarizado de hojas de petasites hybridus (tesalin®) en el tratamiento de la rinitis alérgica / Effectiveness of the standardized extract of leaves of petasites hybridus (tesalin®) in the treatment of allergic rhinitis

La rinitis alérgica es una patología frecuente, de alto impacto social, y alteración de la calidad de vida, lo que conlleva al cambio frecuente de la medicación, y al uso de más de un medicamento, sin el control adecuado de la sintomatología. Se evaluó la evolución de los síntomas clínicos en 927 pacientes con historia de rinitis alérgica perenne y estacional sintomática, sin indicación de antibioticoterapia en las dos semanas previas al tratamiento con Extracto estandarizado de hojas de Petasites Hybridus Ze339 (Tesalin®). Los síntomas de la rinitis alérgica fueron registrados en la visitas a sus médicos los días 0, 7, 14 y 28 después de iniciar el tratamiento. Los pacientes con Extracto estandarizado de hojas de Petasites Hybridus Ze339 (Tesalin®) una tableta dos o tres veces al día durante 28 días, se permitió cualquier otra medicación concomitante excepto antimicrobianos. El análisis de efectividad y tolerancia fue realizado por el médico y paciente. Para el médico, el porcentaje de pacientes que se encontraban totalmente libres de síntomas, o éstos eran muy leves,fue de 94.71%, mientras que para los pacientes fue de 95.90%, con una excelente correlación entre ambas opiniones. La tolerancia fue buena para el médico (90.70%) y para el paciente (94,47%) (p 0.95). El extracto estandarizado de hojas de Petasites Hybridus Ze339 (Tesalin®) resultó efectivo y seguro en el tratamiento de los síntomas de la rinitis alérgica no complicada

Allergic rhinitis is a common condition, high social impact, and impaired quality of life, which leads to frequent change of medication, and the use of more than one drug, without adequate control of symptoms. We evaluated the evolution of clinical symptoms in 927 patients with a history of seasonal allergic rhinitis and symptomatic, with no indication of antibiotic therapy in the two weeks before, that receiving standarized extract of leaves of Petasites Hybridus Ze339 (Tesalin®). The symptoms of allergicrhinitis were recorded in the visits to their doctors on days 0, 7, 14 and 28 after starting treatment. Patients were treated with standarized extract of leaves of Petasites Hybridus Ze339 (Tesalin®) one tablet two or three times a day for 28 days, allowed any concomitant medication except antibiotics. The effectiveness and tolerance analysis was performed by both the physician and patient. For physicians, the percentage of patients who were completely free of symptoms it was very mild, was of 94.71%, while for the patients was 95.90%, with an excellent correlation between both. Tolerance was good for the doctor (90.70%) and patients (94.47%) (P 0.95). The standarized extract of leaves of Petasites Hybridus Ze339 (Tesalin®) is effective and safe in treating the symptoms of allergic rhinitis is not complicated

Antimutagenic and anticarcinogenic effect of methanol extracts of Petasites japonicus Maxim leaves

The methanol extract from the leaves of Petasites japonicus Maxim (PJ) was studied for its (anti-)mutagenic effect with the SOS chromotest and reverse mutation assay. The (anti-)carcinogenic effects were evaluated by the cytotoxicity on human cancer line cells and by the function and the expression of gap junctions in rat liver epithelial cell. PJ extracts significantly decreased spontaneous beta-galactosidase activity and beta-galactosidase activity induced by a mutagen, ICR, in Salmonella (S.) typhimurium TA 1535/pSK 1002. All doses of the extract (0.08-100 mg/plate) decreased the reversion frequency induced by benzo (alpha)pyrene (BaP) in S. typhimurium TA 98. It decreased not only the spontaneous reversion frequency but also that induced by BaP in S. typhimurium TA 100. PJ extract showed greater cytotoxic effects on human stomach, colon and uterus cancer cells than on other cancer cell types and normal rat liver epithelial cells. Dye transfers though gap junctions were significantly increased by PJ extracts at concentrations greater than 200 microg/mL and the inhibition of dye transfer by 12-O-tetradecanoylphorobol-13-acetate (TPA) was obstructed in all concentrations of PJ. PJ significantly increased the numbers of gap junction protein connexin 43, and increased the protein expression decreased by TPA in a dose-dependent manner. Based on these findings, PJ is suggested to contain antimutagenic and anticarcionogenic compounds.