Monoamine oxidase (MAO) catalyzes the oxidative deamination of amines and neurotransmitters and is involved in mood disorders, depression, oxidative stress, and adverse pharmacological reactions. This work studies the inhibition of human MAO-A by Hypericum perforatum, Peganum harmala, and Lepidium meyenii, which are reported to improve and affect mood and mental conditions. Subsequently, the an...

Hypericum triquetrifolium Turra. (Hypericaceae) is one of the important medicinal plants. This herb used in Turkish folk medicine for its antidepressant, anthelmintic and antiseptic effects. extracts have an commercial value pharmaceutical industry. Therefore, studies to increase amount secondary metabolites it contains are becoming widespread. Elicitors biological non-biological factors that c...

The present study shows for the first time the phenolic composition and the in vitro properties (antioxidant and inhibition of nitric oxide production) of Hypericum calabricum Sprengel collected in Italy. The content of hypericins (hypericin and pseudohypericin), hyperforin, flavonoids (rutin, hyperoside, isoquercetrin, quercitrin, quercetin and biapigenin) and chlorogenic acid of H. calabricum...

The phloroglucinol derivative hyperforin has been recently shown to be a major antidepressant component in the extract of Hypericum perforatum. Experimental studies clearly demonstrated its activity in different behavioral models of depression. Moreover clinical studies linked the therapeutic efficacy of Hypericum extracts to their hyperforin content, in a dose-dependent manner. The molecular m...

Depression is a common and serious mood disorder, with nearly 7% of U.S. adults reporting at least one episode major depression in the past year. The adverse effects associated antidepressants cause many patients to turn alternative treatments like St. John's wort (Hypericum perforatum). This yellow-flowering plant most popular supplements promoted for depression, menopause symptoms, disorders....

Background & Aim: St John's wort (Hypericum perforatum L.) contains hypericin and hyperforin as the main components of the extract that binds with GABA and sigma opioid receptors. This herb has many pharmacological effects, including analgesic, sedative, soothing, antispasmodic, anticonvulsant, anti-depressant, and anti-bacteria. In this study examined the effect of two concentrations of Hyperi...

In the present work we carried out a phytochemical and biological investigation on three endemic Hypericum species, i.e. Hypericum thymbrifolium, Hypericum spectabile and Hypericum pseudolaeve from Anatolia in order to discover new sources of natural compounds for the treatment of inflammatory and neurodegenerative disorders. HPLC-DAD analysis indicated that two naphthodianthrones (pseudohyperi...

In the present work we carried out a phytochemical and biological investigation on three endemic Hypericum species, i.e. Hypericum thymbrifolium, Hypericum spectabile and Hypericum pseudolaeve from Anatolia in order to discover new sources of natural compounds for the treatment of inflammatory and neurodegenerative disorders. HPLC-DAD analysis indicated that two naphthodianthrones (pseudohyperi...

Background: Biotechnologic methods are common for secondary metabolites production from the plants and other sources in pharmaceutical sciences. Hairy root cell lines as the biotechnologic method have been used for in vitro production of major plant metabolites. Objective: In this study, hairy roots of Hypericum Perforatum have been prepared using the seeds and bio transformed by bacteria. Fin...

Hypericins, hyperforin and flavonoids are discussed as the main components contributing to the antidepressant action of St. John's wort (Hypericum perforatum). Therefore, the objective of the two open phase I clinical trials was to obtain pharmacokinetic data of these constituents from a hypericum extract containing tablet: hypericin, pseudohypericin, hyperforin, the flavonoid aglycone querceti...