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Results: 1 to 20 of 277

1.

The production of hypericins and hyperforin by in vitro cultures of St. John's wort (Hypericum perforatum).

Kirakosyan A, Sirvent TM, Gibson DM, Kaufman PB.

Biotechnol Appl Biochem. 2004 Feb;39(Pt 1):71-81. Review.

PMID:
14521510
[PubMed - indexed for MEDLINE]
2.

An in vitro and hydroponic growing system for hypericin, pseudohypericin, and hyperforin production of St. John's wort (Hypericum perforatum CV new stem).

Murch SJ, Rupasinghe HP, Saxena PK.

Planta Med. 2002 Dec;68(12):1108-12.

PMID:
12494339
[PubMed - indexed for MEDLINE]
3.

Study of dynamic accumulation of secondary metabolites in three subspecies of Hypericum perforatum.

Filippini R, Piovan A, Borsarini A, Caniato R.

Fitoterapia. 2010 Mar;81(2):115-9. doi: 10.1016/j.fitote.2009.08.002. Epub 2009 Aug 15.

PMID:
19686808
[PubMed - indexed for MEDLINE]
4.

[Hypericin and hyperforin: bioactive components of St. John's Wort (Hypericum perforatum). Their isolation, analysis and study of physiological effect].

Vacek J, Klejdus B, Kubán V.

Ceska Slov Farm. 2007 Apr;56(2):62-6. Review. Czech.

PMID:
17619301
[PubMed - indexed for MEDLINE]
5.

Pseudohypericin and hyperforin in Hypericum perforatum from Northern Turkey: variation among populations, plant parts and phenological stages.

Cirak C, Radusiene J, Janulis V, Ivanauskas L.

J Integr Plant Biol. 2008 May;50(5):575-80. doi: 10.1111/j.1744-7909.2008.00657.x.

PMID:
18713425
[PubMed - indexed for MEDLINE]
6.

Simultaneous determination of the predominant hyperforins and hypericins in St. John's Wort (Hypericum perforatum L.) by liquid chromatography.

Gray DE, Rottinghaus GE, Garrett HE, Pallardy SG, Gray DE, Rottinghaus GE, Garrett HE, Pallardy SG.

J AOAC Int. 2000 Jul-Aug;83(4):944-9.

PMID:
10995119
[PubMed - indexed for MEDLINE]
7.

Hypericin and hyperforin production in St. John's wort in vitro culture: influence of saccharose, polyethylene glycol, methyl jasmonate, and Agrobacterium tumefaciens.

Pavlík M, Vacek J, Klejdus B, Kuban V.

J Agric Food Chem. 2007 Jul 25;55(15):6147-53. Epub 2007 Jul 4.

PMID:
17608493
[PubMed - indexed for MEDLINE]
8.

Topical application of St John's wort (Hypericum perforatum L.) and of its metabolite hyperforin inhibits the allostimulatory capacity of epidermal cells.

Schempp CM, Winghofer B, Lüdtke R, Simon-Haarhaus B, Schöpf E, Simon JC.

Br J Dermatol. 2000 May;142(5):979-84.

PMID:
10809859
[PubMed - indexed for MEDLINE]
9.

Simultaneous determination of total hypericin and hyperforin in St. John's wort extracts by HPLC with electrochemical detection.

Rückert U, Likussar W, Michelitsch A.

Phytochem Anal. 2007 May-Jun;18(3):204-8.

PMID:
17500362
[PubMed - indexed for MEDLINE]
10.

Effects of UV-B on secondary metabolites of St. John's Wort (Hypericum perforatum L.) grown in controlled environments.

Brechner ML, Albright LD, Weston LA.

Photochem Photobiol. 2011 May-Jun;87(3):680-4. doi: 10.1111/j.1751-1097.2011.00904.x. Epub 2011 Mar 8.

PMID:
21275996
[PubMed - indexed for MEDLINE]
11.

Effect of St. John's wort on free radical production.

Hunt EJ, Lester CE, Lester EA, Tackett RL.

Life Sci. 2001 Jun 1;69(2):181-90.

PMID:
11441908
[PubMed - indexed for MEDLINE]
12.

Induction of hypericins and hyperforins in Hypericum perforatum in response to damage by herbivores.

Sirvent TM, Krasnoff SB, Gibson DM.

J Chem Ecol. 2003 Dec;29(12):2667-81.

PMID:
14969354
[PubMed - indexed for MEDLINE]
13.

Bioactive constituent production in St. John's Wort in vitro hairy roots. Regenerated plant lines.

Bertoli A, Giovannini A, Ruffoni B, Guardo AD, Spinelli G, Mazzetti M, Pistelli L.

J Agric Food Chem. 2008 Jul 9;56(13):5078-82. doi: 10.1021/jf0729107. Epub 2008 Jun 14.

PMID:
18553917
[PubMed - indexed for MEDLINE]
14.

Differential accumulation of hyperforin and secohyperforin in Hypericum perforatum tissue cultures.

Charchoglyan A, Abrahamyan A, Fujii I, Boubakir Z, Gulder TA, Kutchan TM, Vardapetyan H, Bringmann G, Ebizuka Y, Beerhues L.

Phytochemistry. 2007 Nov;68(21):2670-7. Epub 2007 Jul 23.

PMID:
17643455
[PubMed - indexed for MEDLINE]
15.

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

Verotta L, Appendino G, Jakupovic J, Bombardelli E.

J Nat Prod. 2000 Mar;63(3):412-5.

PMID:
10757735
[PubMed - indexed for MEDLINE]
16.
17.

Effect of light on hypericins contents in fresh flowering top parts and in an extract of St. John's Wort (Hypericum perforatum).

Poutaraud A, Di Gregorio F, Tin VC, Girardin P.

Planta Med. 2001 Apr;67(3):254-9.

PMID:
11345698
[PubMed - indexed for MEDLINE]
18.

Three new hyperforin analogues from Hypericum perforatum.

Shan MD, Hu LH, Chen ZL.

J Nat Prod. 2001 Jan;64(1):127-30.

PMID:
11170687
[PubMed - indexed for MEDLINE]
19.

Hyperforin.

Beerhues L.

Phytochemistry. 2006 Oct;67(20):2201-7. Epub 2006 Sep 14.

PMID:
16973193
[PubMed - indexed for MEDLINE]
20.

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