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Hyperforin

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https://www.readbyqxmd.com/read/28210627/hyperforin-hp-%C3%AE-cyclodextrin-enhances-mechanosensitive-ca-2-signaling-in-hacat-keratinocytes-and-in-atopic-skin-ex-vivo-which-accelerates-wound-healing
#1
Hiroya Takada, Jun Yonekawa, Masami Matsumoto, Kishio Furuya, Masahiro Sokabe
Cutaneous wound healing is accelerated by mechanical stretching, and treatment with hyperforin, a major component of a traditional herbal medicine and a known TRPC6 activator, further enhances the acceleration. We recently revealed that this was due to the enhancement of ATP-Ca(2+) signaling in keratinocytes by hyperforin treatment. However, the low aqueous solubility and easy photodegradation impede the topical application of hyperforin for therapeutic purposes. We designed a compound hydroxypropyl-β-cyclodextrin- (HP-β-CD-) tetracapped hyperforin, which had increased aqueous solubility and improved photoprotection...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28147885/bioactive-compounds-from-hypericum-humifusum-and-hypericum-perfoliatum-inhibition-potential-of-polyphenols-with-acetylcholinesterase-and-key-enzymes-linked-to-type-2-diabetes
#2
Afef Béjaoui, Issam Ben Salem, Nesrine Rokbeni, Yassine M'rabet, Mohamed Boussaid, Abdennacer Boulila
CONTEXT: Natural products are reported to have a wide spectrum of pharmacological properties such as antimicrobial, anti-inflammatory and anti-cholinesterase. The genus Hypericum (Hypericaceae) is a source of a variety of molecules with different biological activities, notably hypericin and various phenolics. OBJECTIVES: The goals of the present work were the determination of total phenolic and flavonoid content, hypericin and hyperforin concentration as well as the evaluation of biological of Hypericum humifusum L...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28117734/hyperforin-exhibits-antigenotoxic-activity-on-human-and-bacterial-cells
#3
Petronela Imreova, Jana Feruszova, Stanislav Kyzek, Kristina Bodnarova, Martina Zduriencikova, Katarina Kozics, Pavel Mucaji, Eliska Galova, Andrea Sevcovicova, Eva Miadokova, Ivan Chalupa
Hyperforin (HF), a substance that accumulates in the leaves and flowers of Hypericum perforatum L. (St. John's wort), consists of a phloroglucinol skeleton with lipophilic isoprene chains. HF exhibits several medicinal properties and is mainly used as an antidepressant. So far, the antigenotoxicity of HF has not been investigated at the level of primary genetic damage, gene mutations, and chromosome aberrations, simultaneously. The present work is designed to investigate the potential antigenotoxic effects of HF using three different experimental test systems...
January 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28110963/hyperforin-activates-gene-transcription-involving-transient-receptor-potential-c6-channels
#4
Gerald Thiel, Oliver G Rössler
Hypericum perforatum is one of the most prominent medical plants. Hyperforin, a main ingredient of H. perforatum, has been shown to activate transient receptor potential canonical C6 (TRPC6) channels. Alternatively, it has been proposed that hyperforin functions as a protonophore in a TRPC6-independent manner. Here, we show that hyperforin stimulation activates the transcription factor AP-1 in HEK293 cells expressing TRPC6 (T6.11 cells), but did not substantially change the AP-1 activity in HEK293 cells lacking TRPC6...
January 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28064110/clinical-use-of-hypericum-perforatum-st-john-s-wort-in-depression-a-meta-analysis
#5
REVIEW
Qin Xiang Ng, Nandini Venkatanarayanan, Collin Yih Xian Ho
INTRODUCTION: St John's wort is a popular herbal remedy recommended by Traditional Chinese Medicine (TCM) practitioners and licensed and widely prescribed for depression in many European countries. However, conflicting data regarding its benefits and risks exist, and the last large meta-analysis on St John's wort use for depression was done in 2008, with no updated meta-analysis available. METHODS: Using the keywords [St John's Wort OR Hypericum perforatum OR hypericin OR hyperforin OR johanniskraut OR] AND [depression OR antidepressant OR SSRI], a preliminary search (without language restriction) on the PubMed, Ovid, Clinical Trials Register of the Cochrane Collaboration Depression, Anxiety and Neurosis Group, Cochrane Field for Complementary Medicine, China National Knowledge Infrastructure and WanFang database yielded 5428 papers between 1-Jan-1960 and 1-May-2016...
March 1, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28052331/computed-regioselectivity-and-conjectured-biological-activity-of-ene-reactions-of-singlet-oxygen-with-the-prenylnatural-product-hyperforin
#6
Inna Abramova, Benjamin Rudshteyn, Joel F Liebman, Alexander Greer
Hyperforin is a constituent of St. John's wort and coexists with the singlet oxygen sensitizer hypericin. Density functional theory, molecular mechanics and Connolly surface calculations show that accessibility in the singlet oxygen 'ene' reaction favors the hyperforin "southwest" and "southeast" prenyl (2-methyl-2-butenyl) groups over the northern prenyl groups. While the southern part of hyperforin is initially more susceptible to oxidation, up to 4 'ene' reactions of singlet oxygen can take place. Computational results assist in predicting the fate of adjacent hydroperoxides in hyperforin, where the loss of hydrogen atoms may lead to the formation of a hydrotrioxide and a carbonyl instead of a Russell reaction...
January 4, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28011486/hyperforin-inhibits-cell-growth-by-inducing-intrinsic-and-extrinsic-apoptotic-pathways-in-hepatocellular-carcinoma-cells
#7
I-Tsang Chiang, Wei-Ting Chen, Chih-Wei Tseng, Yen-Chung Chen, Yu-Cheng Kuo, Bi-Jhih Chen, Mao-Chi Weng, Hwai-Jeng Lin, Wei-Shu Wang
The aim of the present study was to investigate the antitumor effect and mechanism of action of hyperforin in hepatocellular carcinoma (HCC) SK-Hep1 cells in vitro. Cells were treated with different concentrations of hyperforin for different periods of time. Effects of hyperforin on cell viability, apoptosis signaling, and expression of anti-apoptotic and proliferative proteins [cellular FLICE-like inhibitory protein (c-FLIP), X-linked inhibitor of apoptosis protein (XIAP), myeloid cell leukemia 1(MCL1), and cyclin-D1] were investigated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, flow cytometry, and western blotting...
2017: Anticancer Research
https://www.readbyqxmd.com/read/27999964/arbuscular-mycorrhizal-fungi-altered-the-hypericin-pseudohypericin-and-hyperforin-content-in-flowers-of-hypericum-perforatum-grown-under-contrasting-p-availability-in-a-highly-organic-substrate
#8
Silvia Lazzara, Marcello Militello, Alessandra Carrubba, Edoardo Napoli, Sergio Saia
St. John's Wort (Hypericum perforatum) is a perennial herb able to produce water-soluble active ingredients (a.i.), mostly in flowers, with a wide range of medicinal and biotechnological uses. However, information about the ability of arbuscular mycorrhizal fungi (AMF) to affect its biomass accumulation, flower production, and concentration of a.i. under contrasting nutrient availability is still scarce. In the present experiment, we evaluated the role of AMF on growth, flower production, and concentration of bioactive secondary metabolites (hypericin, pseudohypericin, and hyperforin) of H...
December 20, 2016: Mycorrhiza
https://www.readbyqxmd.com/read/27989965/st-john-s-wort-extract-and-hyperforin-inhibit-multiple-phosphorylation-steps-of-cytokine-signaling-and-prevent-inflammatory-and-apoptotic-gene-induction-in-pancreatic-%C3%AE-cells
#9
Michela Novelli, Marta Menegazzi, Pascale Beffy, Svetlana Porozov, Alex Gregorelli, Daniela Giacopelli, Vincenzo De Tata, Pellegrino Masiello
The extract of the herbaceous plant St. John's wort (SJW) and its phloroglucinol component hyperforin (HPF) were previously shown to inhibit cytokine-induced STAT-1 and NF-κB activation and prevent damage in pancreatic β cells. To further clarify the mechanisms underlying their protective effects, we evaluated the phosphorylation state of various factors of cytokine signaling pathways and the expression of target genes involved in β-cell function, inflammatory response and apoptosis induction. In the INS-1E β-cell line, exposed to a cytokine mixture with/without SJW extract (2-5μg/ml) or HPF (1-5μM), protein phosphorylation was assessed by Western blotting and expression of target genes by real-time quantitative PCR...
October 22, 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27881772/store-operated-calcium-channel-complex-in-postsynaptic-spines-a-new-therapeutic-target-for-alzheimer-s-disease-treatment
#10
Hua Zhang, Suya Sun, Lili Wu, Ekaterina Pchitskaya, Olga Zakharova, Klementina Fon Tacer, Ilya Bezprozvanny
: Mushroom dendritic spine structures are essential for memory storage and the loss of mushroom spines may explain memory defects in aging and Alzheimer's disease (AD). The stability of mushroom spines depends on stromal interaction molecule 2 (STIM2)-mediated neuronal-store-operated Ca(2+) influx (nSOC) pathway, which is compromised in AD mouse models, in aging neurons, and in sporadic AD patients. Here, we demonstrate that the Transient Receptor Potential Canonical 6 (TRPC6) and Orai2 channels form a STIM2-regulated nSOC Ca(2+) channel complex in hippocampal mushroom spines...
November 23, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27833957/influence-of-hyperforin-on-the-morphology-of-internal-organs-and-biochemical-parameters-in-experimental-model-in-mice
#11
Simona Negreş, Corina Scutari, Floriana Elvira Ionică, Veaceslav Gonciar, Bruno Ştefan Velescu, Oana Cristina Şeremet, Anca Zanfirescu, Cristina Elena Zbârcea, Emil Ştefănescu, Emilia Ciobotaru, Cornel ChiriŢă
BACKGROUND AND AIMS: Hyperforin (HY) is used to treat depression and skin irritation and has been shown a number of pharmacological activities. The literature does no cite data on changes that may occur in the body after HY intake (ethylene diammonium salt - EDS) in long-term administration. From this point of view, the present work is a key to determining the pharmacotoxicological profile of the HY-EDS, in long-term administration. MATERIALS AND METHODS: In present research, the influence of toxic doses of HY-EDS was investigated on the biochemical serum parameters and the histopathological changes in internal organs on the experimental mice model...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27833633/occurrence-and-distribution-of-phytochemicals-in-the-leaves-of-17-in-vitro-cultured-hypericum-spp-adapted-to-outdoor-conditions
#12
Andrea Kucharíková, Souvik Kusari, Selahaddin Sezgin, Michael Spiteller, Eva Čellárová
A plethora of plants belonging to the genus Hypericum have been investigated so far owing to the biological efficacies of pharmacologically important secondary metabolites produced by several Hypericum species. However, there is currently a dearth of information about the localization (accumulation) of these compounds in the plants in situ. In particular, the biosynthetic and ecological consequence of acclimatization of in vitro cultured Hypericum spp. to outdoor conditions is not fully known. Herein, we report an application of matrix-assisted laser desorption/ionization high-resolution mass spectrometry (MALDI-HRMS) to reveal the distribution of major naphthodianthrones hypericin, pseudohypericin, protohypericin, and their proposed precursor emodin as well as emodin anthrone, along with the phloroglucinol derivative hyperforin, the flavonoids quercetin, quercitrin, rutin and hyperoside (and/or isoquercitrin), and chlorogenic acid in Hypericum leaves...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27780755/st-john-s-wort-extract-and-hyperforin-inhibit-multiple-phosphorylation-steps-of-cytokine-signaling-and-prevent-inflammatory-and-apoptotic-gene-induction-in-pancreatic-%C3%AE-cells
#13
Michela Novelli, Marta Menegazzi, Pascale Beffy, Svetlana Porozov, Alex Gregorelli, Daniela Giacopelli, Vincenzo De Tata, Pellegrino Masiello
The extract of the herbaceous plant St. John's wort (SJW) and its phloroglucinol component hyperforin (HPF) were previously shown to inhibit cytokine-induced STAT-1 and NF-κB activation and prevent damage in pancreatic β cells. To further clarify the mechanisms underlying their protective effects, we evaluated the phosphorylation state of various factors of cytokine signaling pathways and the expression of target genes involved in β-cell function, inflammatory response and apoptosis induction. In the INS-1E β-cell line, exposed to a cytokine mixture with/without SJW extract (2-5μg/ml) or HPF (1-5μM), protein phosphorylation was assessed by western blotting and expression of target genes by real-time quantitative PCR...
December 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27669815/guttiferone-a-aggregates-modulate-silent-information-regulator-1-sirt1-activity
#14
Kévin Cottet, Bin Xu, Pascale Coric, Serge Bouaziz, Sylvie Michel, Michel Vidal, Marie-Christine Lallemand, Sylvain Broussy
Natural products guttiferone A, hyperforin, and aristoforin were able to inhibit or increase SIRT1 catalytic activity, depending on protein concentration and presence of detergent. On the basis of NMR data for guttiferone A, we demonstrated that the aggregation state of the natural product played a crucial role for its interaction with the enzyme. These results are useful to interpret future in vitro structure-activity relationship studies on these natural products in the quest of their biological target(s)...
October 27, 2016: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/27649611/hypericum-perforatum-l-treatment-restored-bone-mass-changes-in-swimming-stressed-rats
#15
Nikos Seferos, Loukas Petrokokkinos, Antonia Kotsiou, George Rallis, Christine Tesseromatis
UNLABELLED: Stress, via corticosteroids release, influences bone mass density. Hypericum perforatum (Hp) a traditional remedy possess antidepressive activity (serotonin reuptake inhibitor) and wound healing properties. Hp preparation contains mainly hypericin, hyperforin, hyperoside and flavonoids exerting oestrogen-mimetic effect. Cold swimming represents an experimental model of stress associating mental strain and corporal exhaustion. OBJECTIVES: This study investigates the Hp effect on femur and mandible bone mass changes in rats under cold forced swimming procedure...
2016: Stomatologija
https://www.readbyqxmd.com/read/27611779/camkii-mediated-creb-phosphorylation-is-involved-in-ca2-induced-bdnf-mrna-transcription-and-neurite-outgrowth-promoted-by-electrical-stimulation
#16
Xiaodong Yan, Juanfang Liu, Zhengxu Ye, Jinghui Huang, Fei He, Wei Xiao, Xueyu Hu, Zhuojing Luo
Electrical stimulation (ES)-triggered up-regulation of brain-derived neurotrophic factor (BDNF) and neurite outgrowth in cultured rat postnatal dorsal root ganglion neurons (DRGNs) is calcium (Ca2+)-dependent. The effects of increased Ca2+ on BDNF up-regulation and neurite outgrowth remain unclear. We showed here that ES increased phosphorylation of the cAMP-response element binding protein (CREB). Blockade of Ca2+ suppressed CREB phosphorylation and neurite outgrowth. Down-regulation of phosphorylated (p)-CREB reduced BDNF transcription and neurite outgrowth triggered by ES...
2016: PloS One
https://www.readbyqxmd.com/read/27589952/a-systematic-review-of-st-john-s-wort-for-major-depressive-disorder
#17
Eric A Apaydin, Alicia R Maher, Roberta Shanman, Marika S Booth, Jeremy N V Miles, Melony E Sorbero, Susanne Hempel
BACKGROUND: This systematic review evaluated St. John's wort (SJW) for the treatment of Major Depressive Disorder (MDD). The objectives of this review are to (1) evaluate the efficacy and safety of SJW in adults with MDD compared to placebo and active comparator and (2) evaluate whether the effects vary by severity of MDD. METHODS: We searched PubMed, CINAHL, PsycINFO, CENTRAL, Embase, AMED, MANTIS, Web of Science, and ICTRP and existing reviews to November 2014...
September 2, 2016: Systematic Reviews
https://www.readbyqxmd.com/read/27454708/estrogenic-activity-of-hyperforin-in-mcf-7-human-breast-cancer-cells-transfected-with-estrogen-receptor
#18
Joseph Kwon, Kyung Seo Oh, Se-Young Cho, Mi Ae Bang, Hwan Seon Kim, Bipin Vaidya, Duwoon Kim
Hyperforin, a major active compound of St. John's wort extract, affects estrogenic activity. In this study, the compound evoked estrogen response element-dependent luciferase activity and cell proliferation in MCF-7 cells. Hyperforin-induced cell proliferation was significantly inhibited by the estrogen receptor antagonist ICI 182,780. These results suggested that hyperforin had estrogenic and cell proliferation activities, which were stimulated via the estrogen receptor. Compared to 17β-estradiol, hyperforin showed significantly lower estrogenic activity and cell proliferation...
November 2016: Planta Medica
https://www.readbyqxmd.com/read/27393954/effect-of-cryoprotectant-solution-and-of-cooling-rate-on-crystallization-temperature-in-cryopreserved-hypericum-perforatum-cell-suspension-cultures
#19
Anna Misianiková, Daniela Zubrická, Linda Petijová, Katarina Brunákova, Eva Cellárová
BACKGROUND: The increasing demand for hypericins and hyperforins, the unique pharmaceuticals found in the Hypericum genus, requires the development of effective tools for long-term storage of cells and tissues with unique biochemical profiles. OBJECTIVE: To determine the temperature of crystallization (T(C)) and of ice formation of 14 cryoprotectant mixtures (CMs) for their use in cryoprotection of H. perforatum L. cell suspensions and to evaluate the impact of the lowest Tc on post-cryogenic recovery...
May 2016: Cryo Letters
https://www.readbyqxmd.com/read/27383564/trpc6-channel-activation-promotes-neonatal-glomerular-mesangial-cell-apoptosis-via-calcineurin-nfat-and-fasl-fas-signaling-pathways
#20
Hitesh Soni, Adebowale Adebiyi
Glomerular mesangial cell (GMC) proliferation and death are involved in the pathogenesis of glomerular disorders. The mechanisms that control GMC survival are poorly understood, but may include signal transduction pathways that are modulated by changes in intracellular Ca(2+) ([Ca(2+)]i) concentration. In this study, we investigated whether activation of the canonical transient receptor potential (TRPC) 6 channels and successive [Ca(2+)]i elevation alter neonatal GMC survival. Hyperforin (HF)-induced TRPC6 channel activation increased [Ca(2+)]i concentration, inhibited proliferation, and triggered apoptotic cell death in primary neonatal pig GMCs...
2016: Scientific Reports
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