Results 71 to 80 of about 2,864 (178)

No clinically relevant CYP3A induction after St. John’s wort with low hyperforin content in healthy volunteers [PDF]

open access: yes, 2009
Objective Induction of CYP3A by St. John’s wort (SJW) products with high hyperforin content is well described. Since CYP3A induction is mediated by hyperforin in a concentration-dependent manner, and SJW preparations differ significantly in hyperforin ...
Frank, B   +10 more
core   +1 more source

St. John\'s wort (Hypericum perforatum L.): A Review

open access: yesJournal of Medicinal Plants, 2005
Hypericum perforatum L., also known St. John's wort, is a herbaceous perennial belonging to Hypericaceae family that is a native of Western Europe, North Africa, and Asia. The importance of this plant as a phytopharmaceutical, especially for treatment of
H Naghdi Badi   +3 more
doaj  

Determination of the Antioxidant Status of the Skin by In Vivo-Electron Paramagnetic Resonance (EPR) Spectroscopy

open access: yesCosmetics, 2015
Organisms produce free radicals which are essential for various metabolic processes (enzymatic oxidation, cellular respiration, signaling). Antioxidants are important chemical compounds that specifically prevent the oxidation of substances by scavenging ...
Silke Barbara Lohan   +13 more
doaj   +1 more source

Hyperforin promotes mitochondrial function and development of oligodendrocytes [PDF]

open access: yes, 2009
Major depressive disorder is a common severe psychiatric disorder with unknown etiology. Recent studies show that the loss and malfunction of oligodendrocytes are closely related to the neuropathological changes in depression, which can be reversed by ...
Wang, Yanlin
core  

Understanding drug interactions with St John's wort (Hypericum perforatumL.): impact of hyperforin content

open access: yes, 2018
ObjectiveThe aim of this study was to review herb–drug interaction studies with St John's wort (Hypericum perforatum L.) with a focus on the hyperforin content of the extracts used in these studies.MethodsPUBMED was systematically searched to identify ...
Julia Vlachojannis   +5 more
core   +1 more source

Enantioselective Total Synthesis of Hyperforin

open access: yes, 2016
A modular, 18-step total synthesis of hyperforin is described. The natural product was quickly accessed using latent symmetry elements, whereby a group-selective, Lewis acid-catalyzed epoxide-opening cascade cyclization was used to furnish the bicyclo[3 ...
David C. Moebius (1667218)   +2 more
core   +1 more source

Secondary Metabolites of and their Possible Chemotaxonomic Significance

open access: yesNatural Product Communications, 2010
The phloroglucinol derivative hyperforin, the naphthodianthrones hypericin and pseudohypericin, the phenylpropane chlorogenic acid, and the flavonoids rutin, hyperoside, apigenin-7- O -glucoside, kaempferol, quercitrin, quercetin and amentoflavone were ...
Cüneyt Çırak   +3 more
doaj   +1 more source

Store-depletion and hyperforin activate distinct types of Ca(2+)-conducting channels in cortical neurons.

open access: yes, 2010
International audienceCortical neurons embryos (E13) from murine brain have a wide diversity of plasma membrane Ca(2+)-conducting channels. For instance, they express several types of transient receptor potential channels of C-type (TRPC) and hyperforin,
Gibon, Julien   +5 more
core   +1 more source

Hyperforin analogues from St. John's wort (Hypericum perforatum)

open access: yes, 2000
Three oxygenated analogues of the prenylated phloroglucinol hyperforin (3-5) were isolated from the aerial parts of Hypericum perforatum and their structures elucidated by spectroscopic ...
VEROTTA L.   +7 more
core   +1 more source

Hyperforin is a novel type of 5-lipoxygenase inhibitor with high efficacy in vivo.

open access: yes, 2009
We previously showed that, in vitro, hyperforin from St. John’s wort (Hypericum perforatum ) inhibits 5-lipoxygenase (5-LO), the key enzyme in leukotriene biosynthesis.
O. WERZ   +14 more
core   +1 more source

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