The effect of the gene dosage on the expression of rRNAs was studied in Hypericum perforatum. The methylation levels of rDNA were analysed using the isoschizomers MspI and HpaII and eleven additional methylation-sensitive enzymes. No differences in rDNA methylation were observed between diploids and tetraploids at an early ontogenetic stage.

Hyperfoliatin, a new polyisoprenylated phloroglucinol derivative was isolated from the aerial parts of Hypericum perfoliatum (Clusiaceae) collected in Algeria. The structure of hyperfoliatin was elucidated on the basis of its spectral data, mainly MS and multiple-pulse NMR.

Dried plant material of the genus Hypericum is successfully used as versatile catalyst in photoredox reactions.

NEDKOV, N., 2007. Research on the Effect of Pre-sowing Treatment on Seed Germination of Hypericum perforatum L. Bulg. J. Agric. Sci., 13: 31-37 Trials were carried out for improvement of seed germination of St. John's Wort (Hypericum perforatum L.) based on studies of main sowing properties after treatments as follows: soaking, soaking and heating and combined seed stratification. Recommendatio...

Background & Aim:Hypericum perforatum L. is native to Iran. This herb is one of the most important medicinal plants and had many medical effects.This experiment was conducted to investigate the effects of feeding Hypericum perforatum and protexin on performance, carcass characteristics and intestinal morphology Japanese quails. Experimental: ...

105 Keyword Index 106 Introduction 106 Results/Discussion 108 Conclusions and Concluding Remarks 117 Experimental 117 Acknowledgements 122 Literature Cited 123 Tables 127 Figure Legends 131 Figures 133 CHAPTER 5. IDENTIFICATION OF PATHWAYS IMPORTANT FOR THE ANTI-INFLAMMATORY ACTIVITY OF AN HYPERICUM PERFORATUM FRACTION AND FOUR PUTATIVE BIOACTIVE CONSTITUENTS IN RAW 264.7 MOUSE MACROPHAGES USIN...

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...

Background & Aim:Hypericum perforatum L. is native to Iran. This herb is one of the most important medicinal plants and had many medical effects.This experiment was conducted to investigate the effects of feeding Hypericum perforatum and protexin on performance, carcass characteristics and intestinal morphology Japanese quails. Experimental: ...

We present a systematic review of observational studies of hypericum extracts in the treatment of depressive disorders. We included non-randomized studies with at least 100 patients suffering from depressive disorders treated with hypericum mono-preparations for at least 4 weeks, which reported clinical outcomes. Potentially relevant studies were identified through searches in electronic databa...