Anti-complement Activity of Constituents from the Stem-Bark of Juglans mandshurica

Four known flavonoids and two galloyl glucoses isolated from the stem-bark of Juglans mandshurica (Juglandaceae), namely taxifolin (1), afzelin (2), quercitrin (3), myricitrin (4), 1,2,6-trigalloylglucose (5), and 1,2,3,6-tetragalloylglucose (6), were evaluated for their anti-complement activity aga...

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Published inBiological & Pharmaceutical Bulletin Vol. 26; no. 7; pp. 1042 - 1044
Main Authors Min, Byung-Sun, Lee, Sun-Young, Kim, Jung-Hee, Lee, Joong-Ku, Kim, Tae-Jin, Kim, Dong-Hee, Kim, Young-Ho, Joung, Hyouk, Lee, Hyeong-Kyu, Nakamura, Norio, Miyashiro, Hirotsugu, Hattori, Masao
Format Journal Article
LanguageEnglish
Published Tokyo The Pharmaceutical Society of Japan 2003
Pharmaceutical Society of Japan
Maruzen
Japan Science and Technology Agency
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Abstract Four known flavonoids and two galloyl glucoses isolated from the stem-bark of Juglans mandshurica (Juglandaceae), namely taxifolin (1), afzelin (2), quercitrin (3), myricitrin (4), 1,2,6-trigalloylglucose (5), and 1,2,3,6-tetragalloylglucose (6), were evaluated for their anti-complement activity against complement system. Afzelin (2) and quercitrin (3) showed inhibitory activity against complement system with 50% inhibitory concentrations (IC50) values of 258 and 440 μM. 1,2,6-Trigalloylglucose (5) and 1,2,3,6-tetragalloylglucose (6) exhibited anti-complement activity with IC50 values of 136 and 34 μM. In terms of the evaluation of the structure–activity relationship of 3,5,7-trihydroxyflavone, compounds 2, 3, and 4 were hydrolyzed with naringinase to give kaempferol (2a), quercetin (3a), and myricetin (4a) as their aglycones, and these were also tested for their anti-complement activity. Of the three aglycones, kaempferol (2a) exhibited weak anti-complement activity with an IC50 value of 730 μM, while quercetin (3a) and myricetin (4a) were inactive in this assay system. Among the compounds tested, 1,2,3,6-tetragalloylglucose (6) showed the most potent anticomplement activity (IC50, 34 μM).
AbstractList Four known flavonoids and two galloyl glucoses isolated from the stem-bark of Juglans mandshurica (Juglandaceae), namely taxifolin (1), afzelin (2), quercitrin (3), myricitrin (4), 1,2,6-trigalloylglucose (5), and 1,2,3,6-tetragalloylglucose (6), were evaluated for their anti-complement activity against complement system. Afzelin (2) and quercitrin (3) showed inhibitory activity against complement system with 50% inhibitory concentrations (IC(50)) values of 258 and 440 microM. 1,2,6-Trigalloylglucose (5) and 1,2,3,6-tetragalloylglucose (6) exhibited anti-complement activity with IC(50) values of 136 and 34 microM. In terms of the evaluation of the structure-activity relationship of 3,5,7-trihydroxyflavone, compounds 2, 3, and 4 were hydrolyzed with naringinase to give kaempferol (2a), quercetin (3a), and myricetin (4a) as their aglycones, and these were also tested for their anti-complement activity. Of the three aglycones, kaempferol (2a) exhibited weak anti-complement activity with an IC(50) value of 730 microM, while quercetin (3a) and myricetin (4a) were inactive in this assay system. Among the compounds tested, 1,2,3,6-tetragalloylglucose (6) showed the most potent anticomplement activity (IC(50), 34 microM).
Four known flavonoids and two galloyl glucoses isolated from the stem-bark of Juglans mandshurica (Juglandaceae), namely taxifolin (1), afzelin (2), quercitrin (3), myricitrin (4), 1,2,6-trigalloylglucose (5), and 1,2,3,6-tetragalloylglucose (6), were evaluated for their anti-complement activity against complement system. Afzelin (2) and quercitrin (3) showed inhibitory activity against complement system with 50% inhibitory concentrations (IC50) values of 258 and 440 μM. 1,2,6-Trigalloylglucose (5) and 1,2,3,6-tetragalloylglucose (6) exhibited anti-complement activity with IC50 values of 136 and 34 μM. In terms of the evaluation of the structure-activity relationship of 3,5,7-trihydroxyflavone, compounds 2, 3, and 4 were hydrolyzed with naringinase to give kaempferol (2a), quercetin (3a), and myricetin (4a) as their aglycones, and these were also tested for their anti-complement activity. Of the three aglycones, kaempferol (2a) exhibited weak anti-complement activity with an IC50 value of 730 μM, while quercetin (3a) and myricetin (4a) were inactive in this assay system. Among the compounds tested, 1,2,3,6-tetragalloylglucose (6) showed the most potent anticomplement activity (IC50, 34 μM).
Author Lee, Sun-Young
Kim, Jung-Hee
Kim, Young-Ho
Lee, Joong-Ku
Kim, Dong-Hee
Joung, Hyouk
Min, Byung-Sun
Miyashiro, Hirotsugu
Hattori, Masao
Kim, Tae-Jin
Lee, Hyeong-Kyu
Nakamura, Norio
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  fullname: Min, Byung-Sun
  organization: Laboratory of Immunomodulator, Korea Research Institute of Bioscience and Biotechnology
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  fullname: Lee, Sun-Young
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  fullname: Kim, Jung-Hee
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  fullname: Lee, Joong-Ku
  organization: Laboratory of Immunomodulator, Korea Research Institute of Bioscience and Biotechnology
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  fullname: Kim, Tae-Jin
  organization: Laboratory of Immunomodulator, Korea Research Institute of Bioscience and Biotechnology
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  fullname: Kim, Dong-Hee
  organization: Laboratory of Pathology, College of Oriental Medicine, Deajeon University
– sequence: 7
  fullname: Kim, Young-Ho
  organization: College of Pharmacy, Chungnam National University
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  fullname: Joung, Hyouk
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  organization: Institute of Natural Medicine, Toyama Medical and Pharmaceutical University
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  fullname: Hattori, Masao
  organization: Institute of Natural Medicine, Toyama Medical and Pharmaceutical University
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Issue 7
Keywords Juglans
Bark
3,5,7-trihydroxyflavone
Complement
Juglans mandshurica
Stem
anti-complement activity
1,2,6-trigalloylglucose
Juglandaceae
1,2,3,6-tctragalloylglucose
Dicotyledones
Angiospermae
Spermatophyta
Language English
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Snippet Four known flavonoids and two galloyl glucoses isolated from the stem-bark of Juglans mandshurica (Juglandaceae), namely taxifolin (1), afzelin (2), quercitrin...
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SubjectTerms 1,2,3,6-tetragalloylglucose
1,2,6-trigalloylglucose
3,5,7-trihydroxyflavone
Analytical, structural and metabolic biochemistry
Animals
anti-complement activity
Biological and medical sciences
Complement Inactivator Proteins - chemistry
Complement Inactivator Proteins - isolation & purification
Complement Inactivator Proteins - pharmacology
Complement System Proteins - metabolism
Dose-Response Relationship, Drug
Fundamental and applied biological sciences. Psychology
Humans
Juglans
Juglans mandshurica
Male
Medical sciences
Pharmacology. Drug treatments
Plant Bark
Plant Extracts - chemistry
Plant Extracts - isolation & purification
Plant Extracts - pharmacology
Plant Stems
Sheep
Title Anti-complement Activity of Constituents from the Stem-Bark of Juglans mandshurica
URI https://www.jstage.jst.go.jp/article/bpb/26/7/26_7_1042/_article/-char/en
http://mol.medicalonline.jp/en/journal/download?GoodsID=cs7biolo/2003/002607/028&name=1042-1044e
https://www.ncbi.nlm.nih.gov/pubmed/12843637
https://www.proquest.com/docview/1449306643
https://search.proquest.com/docview/73424654
Volume 26
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