Inhibitory effects of cardols and related compounds on superoxide anion generation by xanthine oxidase
摘要:
5-Pentadecatrienylresorcinol, isolated from cashew nuts and commonly known as cardol (C-15:3), prevented the generation of superoxide radicals catalysed by xanthine oxidase without the inhibition of uric acid formation. The inhibition kinetics did not follow the Michelis-Menten equation, but instead followed the Hill equation. Cardol (C-10:0) also inhibited superoxide anion generation, but resorcinol and cardol (C-5:0) did not inhibit superoxide anion generation. The related compounds 3,5-dihydroxyphenyl alkanoates and alkyl 2,4-dihydroxybenzoates, had more than a C9 chain, cooperatively inhibited but alkyl 3,5-dihydroxybenzoates, regardless of their alkyl chain length, did not inhibit the superoxide anion generation. These results suggested that specific inhibitors for superoxide anion generation catalysed by xanthine oxidase consisted of an electron-rich resorcinol group and an alkyl chain having longer than C9 chain. (C) 2014 Elsevier Ltd. All rights reserved.
Rational design of antimicrobial agents: antifungal activity of alk(en)yl dihydroxybenzoates and dihydroxyphenyl alkanoates
作者:Ken-ichi Nihei、Atsuko Nihei、Isao Kubo
DOI:10.1016/j.bmcl.2003.08.057
日期:2003.11
similar antifungalactivity against Saccharomyces cerevisiae. Their nonyl derivatives exhibit the most potent antifungalactivity against this yeast with the minimum fungicidal concentration (MFC) in the range between 12.5 and 50 microg/mL. In addition, various 3,4-dihydroxybenzoates, possessing different side chains, namely unsaturated, branched and alicyclic were synthesized and their activity was compared
METHOD AND SYSTEM FOR EFFECTING CHANGES IN PIGMENTED TISSUE
申请人:Moazed Kambiz Thomas
公开号:US20110280909A1
公开(公告)日:2011-11-17
Methods and systems are described for a rapid and sustainable change in the pigment melanin content of melanocytes of the iris stroma, thereby to change the color of the eye. Also described are nanoparticle compositions for lightening the pigmented tissues or treating a pigmented tissue related disease.
Method and system for effecting changes in pigmented tissue
申请人:Moazed Kambiz Thomas
公开号:US20120207809A1
公开(公告)日:2012-08-16
Methods and systems are described for a rapid and sustainable change in the pigment melanin content of melanocytes of the iris stroma, thereby to change the color of the eye. Also described are compositions for lightening or darkening the pigmented tissues or treating a pigmented tissue disease.
申请人:CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S)
公开号:US10179921B2
公开(公告)日:2019-01-15
The present invention relates to a method for producing polyphenol compounds, i.e. phloroglucinol or one of its derivatives, with a polyketide synthase of type III (PKSIII) from a brown marine alga. The invention also relates to recombinant nucleic acids coding for a polyketide synthase of type III (PKSIII) from the brown alga Ectocarpus siliculosus (E. siliculosus), to recombinant vectors comprising these nucleic acids, as well as to host cells comprising these vectors. Finally, the invention relates to a method for preparing of various compounds by means of polyphenol compounds produced according to the aforementioned method.
本发明涉及一种利用来自褐海藻的Ⅲ型多酮苷合成酶(PKSⅢ)生产多酚化合物(即氯葡萄糖醇或其衍生物之一)的方法。本发明还涉及编码来自棕色海藻硅藻(Ectocarpus siliculosus)的 III 型多酮苷合成酶(PKSIII)的重组核酸、包含这些核酸的重组载体以及包含这些载体的宿主细胞。最后,本发明涉及一种利用按上述方法生产的多酚化合物制备各种化合物的方法。
UTILISATION DE " POLYKETIDE SYNTHASES " DE TYPE III (PKS III) RECOMBINANTES D'ALGUES BRUNES MARINES