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Zurfluh L, Duvaud L, Inci N, Potterat O, Simoes-Wuest AP, Mosbacher J. Bryophyllum pinnatum Inhibits Oxytocin and Vasopressin Signaling in Myometrial Cells. Planta Med 2024. [PMID: 38599625 DOI: 10.1055/a-2303-9608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
The medicinal plant Bryophyllum pinnatum was previously shown to block oxytocin (OT)-induced signals in myometrial cells, consistent with its tocolytic effect observed in patients. OT activates not only OT receptors but also V1A receptors, two receptors with high receptor homology that are both expressed in the myometrium and play a crucial role in myometrial contraction signaling. We aimed to study the molecular pharmacology of B. pinnatum herbal preparations using specific receptor ligands, the human myometrial cell line hTERT-C3, and cell lines expressing recombinant human OT and V1A receptors. We found that press juice from B. pinnatum (BPJ) inhibits both OT- and vasopressin (AVP)-induced intracellular calcium increases in hTERT-C3 myometrial cells. In additional assays performed with cells expressing recombinant receptors, BPJ also inhibited OT and V1A receptor mediated signals with a similar potency (IC50 about 0.5 mg/mL). We further studied endogenous OT- and AVP-sensitive receptors in hTERT-C3 cells and found that OT and AVP stimulated those receptors with similar potency (EC50 of ~1 nM), suggesting expression of both receptor subtypes. This interpretation was corroborated by the antagonist potencies of atosiban and relcovaptan that we found. However, using qPCR, we almost exclusively found expression of OT receptors suggesting a pharmacological difference between recombinant OT receptors and native receptors expressed in hTERT-C3 cells. In conclusion, we show that B. pinnatum inhibits both, OT and AVP signaling, which may point beyond its tocolytic effects to other indications involving a disbalance in the vasopressinergic system.
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Affiliation(s)
- Leonie Zurfluh
- Research Obstetrics, University Hospital Zurich, Zurich, Switzerland
| | | | - Nejla Inci
- Fachhochschule Nordwestschweiz FHNW, Muttenz, Switzerland
| | - Olivier Potterat
- Abteilung für Pharmazeutische Biologie, Uni Basel, Basel, Switzerland
| | - Ana Paula Simoes-Wuest
- Obstetrics Department, University Hospital Zurich, University of Zurich, Zürich, Switzerland
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2
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Schäfer AM, Rysz MA, Schädeli J, Hübscher M, Khosravi H, Fehr M, Seibert I, Potterat O, Smieško M, Meyer Zu Schwabedissen HE. St. John's Wort Formulations Induce Rat CYP3A23-3A1 Independent of Their Hyperforin Content. Mol Pharmacol 2023; 105:14-22. [PMID: 37863663 DOI: 10.1124/molpharm.123.000725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 09/08/2023] [Accepted: 09/21/2023] [Indexed: 10/22/2023] Open
Abstract
The pregnane X receptor (PXR) is a ligand-activated regulator of cytochrome P450 (CYP)3A enzymes. Among the ligands of human PXR is hyperforin, a constituent of St John's wort (SJW) extracts and potent inducer of human CYP3A4. It was the aim of this study to compare the effect of hyperforin and SJW formulations controlled for its content on CYP3A23-3A1 in rats. Hyperiplant was used as it contains a high hyperforin content and Rebalance because it is controlled for a low hyperforin content. In silico analysis revealed a weak hyperforin-rPXR binding affinity, which was further supported in cell-based reporter gene assays showing no hyperforin-mediated reporter activation in presence of rPXR. However, cellular exposure to Hyperiplant and Rebalance transactivated the CYP3A reporter 3.8-fold and 2.8-fold, respectively, and they induced Cyp3a23-3a1 mRNA expression in rat hepatoma cells compared with control 48-fold and 18-fold, respectively. In Wistar rats treated for 10 days with 400 mg/kg of Hyperiplant, we observed 1.8 times the Cyp3a23-3a1 mRNA expression, a 2.6-fold higher CYP3A23-3A1 protein amount, and a 1.6-fold increase in activity compared with controls. For Rebalance we only observed a 1.8-fold hepatic increase of CYP3A23-3A1 protein compared with control animals. Even though there are differing effects on rCyp3a23-3a1/CYP3A23-3A1 in rat liver reflecting the hyperforin content of the SJW extracts, the modulation is most likely not linked to an interaction of hyperforin with rPXR. SIGNIFICANCE STATEMENT: Treatment with St John's wort (SJW) has been reported to affect CYP3A expression and activity in rats. Our comparative study further supports this finding but shows that the pregnane X receptor-ligand hyperforin is not the driving force for changes in rat CYP3A23-3A1 expression and function in vivo and in vitro. Importantly, CYP3A induction mimics findings in humans, but our results suggest that another so far unknown constituent of SJW is responsible for the expression- and function-modifying effects in rat liver.
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Affiliation(s)
- Anima M Schäfer
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Marta A Rysz
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Julia Schädeli
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Michelle Hübscher
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Haleh Khosravi
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Michelle Fehr
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Isabell Seibert
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Martin Smieško
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Henriette E Meyer Zu Schwabedissen
- Biopharmacy (A.M.S., M.A.R., J.S., M.H., H.K., M.F., I.S., H.E.M.), Computational Pharmacy (M.S.), and Pharmaceutical Biology (O.P.), Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
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3
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Areesanan A, Nicolay S, Keller M, Zimmermann-Klemd AM, Potterat O, Gründemann C. Potential benefits of Malva sylvestris in dry-eye disease pathology in vitro based on antioxidant, wound-healing and anti-inflammatory properties. Biomed Pharmacother 2023; 168:115782. [PMID: 37924786 DOI: 10.1016/j.biopha.2023.115782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/20/2023] [Accepted: 10/20/2023] [Indexed: 11/06/2023] Open
Abstract
Dry eye disease (DED) is a common chronic ocular surface disease. Available therapies are effective but often associated with side effects. This study investigates the potential of a Malva sylvestris L. flower extract and two defined preparations, a mucilage and a polyphenol rich fraction, on cells that are essential for the DED pathology. Furthermore, single compounds were isolated and characterised out of the polyphenol fraction. The M. sylvestris extract and its two fractions reduced reactive oxygen species (ROS) in an ultraviolet-induced model and promoted wound healing capacity of HCE-T cells, but only the polyphenol fraction and the flower extract exhibited significant radical scavenging activity. The flower extract and the polyphenol fraction inhibited cytokine secretion (IL-6, TNF-α, IL-8) from HCE-T cells and THP-1 cells. In contrast, the mucilage fraction led to an increase in mediator secretion. The NF-κB activity and calcium influx in THP-1 and Jurkat cells, respectively was decreased by treatment with the flower extract and the polyphenol fraction, whereas the mucilage fraction had no influence on these parameters. Moreover, the flower extract and the mucilage fraction at low concentration could stimulate meibomian gland cells' lipid accumulation. The isolated single compounds showed no effect on analysed parameters, except a coumarin derivative and malvin which showed ROS inhibition effects.
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Affiliation(s)
- Alexander Areesanan
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Campus Rosental - Mattenstrasse 22, CH-4058 Basel, Switzerland
| | - Sven Nicolay
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Campus Rosental - Mattenstrasse 22, CH-4058 Basel, Switzerland
| | - Morris Keller
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Amy Marisa Zimmermann-Klemd
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Campus Rosental - Mattenstrasse 22, CH-4058 Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Carsten Gründemann
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Campus Rosental - Mattenstrasse 22, CH-4058 Basel, Switzerland.
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Chauveau A, Geirnaert A, Babst A, Treyer A, Lacroix C, Hamburger M, Potterat O. Erratum to alkaloids in commercial preparations of California poppy - Quantification, intestinal permeability and microbiota interactions [Biomed. Pharmacother. 166 (2023) 115420]. Biomed Pharmacother 2023; 167:115615. [PMID: 37778907 DOI: 10.1016/j.biopha.2023.115615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023] Open
Affiliation(s)
- Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Annelies Geirnaert
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Angela Babst
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Andrea Treyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
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5
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Chauveau A, Geirnaert A, Babst A, Treyer A, Lacroix C, Hamburger M, Potterat O. Alkaloids in commercial preparations of California poppy - Quantification, intestinal permeability and microbiota interactions. Biomed Pharmacother 2023; 166:115420. [PMID: 37673017 DOI: 10.1016/j.biopha.2023.115420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/25/2023] [Accepted: 08/30/2023] [Indexed: 09/08/2023] Open
Abstract
California poppy products are commonly used for the treatment of nervousness, anxiety and sleeping disorders. Pharmacologically relevant constituents include the main alkaloids californidine, escholtzine and protopine. However, only limited information is available about the alkaloid content in commercial preparations and their intestinal absorption. Moreover, a possible metabolization of these alkaloids by the gut microbiota, and their impact on microbial activity and viability have not been investigated. Californidine, escholtzine and protopine were quantified by UHPLC-MS/MS in eight commercial California poppy products. The intestinal permeability of alkaloids was studied in Caco-2 cell as a model for absorption in the small intestine. The gut microbial biotransformation was explored in artificial gut microbiota from the in vitro PolyFermS model. In addition, the impact of these alkaloids and a California poppy extract on the microbial production of short-chain fatty acids (SCFAs) and the viability of microbiota was investigated. Contents of californidine, escholtzine and protopine in California poppy products were in the ranges of 0.13-2.55, 0.05-0.63 and 0.008-0.200 mg/g, respectively. In the Caco-2 cell model, californidine was low-to-moderately permeable while escholtzine and protopine were highly permeable. An active transport process was potentially involved in the transfer of the three alkaloids. The three compounds were not metabolized by the artificial gut microbiota over 24 h. Neither the California poppy extract nor the alkaloids markedly impacted microbial SCFA production and bacterial viability.
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Affiliation(s)
- Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Annelies Geirnaert
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Angela Babst
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Andrea Treyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
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6
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Heng MY, Syafni N, Ramseyer J, Thuerig B, Tamm L, Hamburger M, Potterat O. Qualitative and Quantitative Secondary Metabolite Profiles in a Large Set of Sumatra Benzoin Samples. J Agric Food Chem 2023. [PMID: 37399340 DOI: 10.1021/acs.jafc.3c01861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Sumatra benzoin, a resin produced by Styrax benzoin and Styrax paralleloneurum, is used as an aromatic agent and may have the potential to be developed as a new agricultural fungicide. In this context, we performed a comprehensive metabolite profiling of a commercial grade A resin by high-performance liquid chromatography coupled with photodiode array detection, evaporative light scattering detection, and mass spectrometry (HPLC-PDA-ELSD-MS) analysis in combination with 1H NMR. Thirteen compounds including a new cinnamic acid ester containing two p-coumaroyl residues were identified after preparative isolation. These compounds accounted for an estimated 90% of the crude resin according to 1H NMR analysis. The two major constituents, p-coumaryl cinnamate (5) and sumaresinolic acid (11), were quantified by HPLC analysis. In a next step, the chemical profiles and the content in p-coumaryl cinnamate were compared in a large set of resin samples of different quality grades that were obtained from various commercial suppliers in Sumatra. The qualitative profiles of the samples were very similar, but significant quantitative differences were observed between different quality grades and origins of the samples for the relative contents.
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Affiliation(s)
- Ming Yuan Heng
- Pharmaceutical Biology, University of Basel, Basel CH-4056, Switzerland
| | - Nova Syafni
- Pharmaceutical Biology, University of Basel, Basel CH-4056, Switzerland
- Faculty of Pharmacy and Sumatran Biota Laboratory, Andalas University, Kampus Limau Manis, Padang, West Sumatra 25163, Indonesia
| | - Justine Ramseyer
- Pharmaceutical Biology, University of Basel, Basel CH-4056, Switzerland
| | - Barbara Thuerig
- Research Institute of Organic Agriculture FiBL, Ackerstrasse 113, Frick CH-5070, Switzerland
| | - Lucius Tamm
- Research Institute of Organic Agriculture FiBL, Ackerstrasse 113, Frick CH-5070, Switzerland
| | | | - Olivier Potterat
- Pharmaceutical Biology, University of Basel, Basel CH-4056, Switzerland
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Winker M, Chauveau A, Smieško M, Potterat O, Areesanan A, Zimmermann-Klemd A, Gründemann C. Immunological evaluation of herbal extracts commonly used for treatment of mental diseases during pregnancy. Sci Rep 2023; 13:9630. [PMID: 37316493 DOI: 10.1038/s41598-023-35952-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 05/26/2023] [Indexed: 06/16/2023] Open
Abstract
Nonpsychotic mental diseases (NMDs) affect approximately 15% of pregnant women in the US. Herbal preparations are perceived a safe alternative to placenta-crossing antidepressants or benzodiazepines in the treatment of nonpsychotic mental diseases. But are these drugs really safe for mother and foetus? This question is of great relevance to physicians and patients. Therefore, this study investigates the influence of St. John's wort, valerian, hops, lavender, and California poppy and their compounds hyperforin and hypericin, protopine, valerenic acid, and valtrate, as well as linalool, on immune modulating effects in vitro. For this purpose a variety of methods was applied to assess the effects on viability and function of human primary lymphocytes. Viability was assessed via spectrometric assessment, flow cytometric detection of cell death markers and comet assay for possible genotoxicity. Functional assessment was conducted via flow cytometric assessment of proliferation, cell cycle and immunophenotyping. For California poppy, lavender, hops, and the compounds protopine and linalool, and valerenic acid, no effect was found on the viability, proliferation, and function of primary human lymphocytes. However, St. John's wort and valerian inhibited the proliferation of primary human lymphocytes. Hyperforin, hypericin, and valtrate inhibited viability, induced apoptosis, and inhibited cell division. Calculated maximum concentration of compounds in the body fluid, as well as calculated concentrations based on pharmacokinetic data from the literature, were low and supported that the observed effects in vitro would probably have no relevance on patients. In-silico analyses comparing the structure of studied substances with the structure of relevant control substances and known immunosuppressants revealed structural similarities of hyperforin and valerenic acid to the glucocorticoids. Valtrate showed structural similarities to the T cells signaling modulating drugs.
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Affiliation(s)
- Moritz Winker
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Martin Smieško
- Computational Pharmacy, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Alexander Areesanan
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Amy Zimmermann-Klemd
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
| | - Carsten Gründemann
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
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8
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Chauveau A, Treyer A, Geirnaert A, Bircher L, Babst A, Abegg VF, Simões-Wüst AP, Lacroix C, Potterat O, Hamburger M. Intestinal permeability and gut microbiota interactions of pharmacologically active compounds in valerian and St. John's wort. Biomed Pharmacother 2023; 162:114652. [PMID: 37027987 DOI: 10.1016/j.biopha.2023.114652] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/31/2023] [Accepted: 03/31/2023] [Indexed: 04/09/2023] Open
Abstract
Phytomedicines such as valerian and St. John's wort are widely used for the treatment of sleeping disorders, anxiety and mild depression. They are perceived as safe alternatives to synthetic drugs, but limited information is available on the intestinal absorption and interaction with human intestinal microbiota of pharmacologically relevant constituents valerenic acid in valerian, and hyperforin and hypericin in St. John's wort. The intestinal permeability of these compounds and the antidepressant and anxiolytic drugs citalopram and diazepam was investigated in the Caco-2 cell model with bidirectional transport experiments. In addition, interaction of compounds and herbal extracts with intestinal microbiota was evaluated in artificial human gut microbiota. Microbiota-mediated metabolisation of compounds was assessed, and bacterial viability and short-chain fatty acids (SCFA) production were measured in the presence of compounds or herbal extracts. Valerenic acid and hyperforin were highly permeable in Caco-2 cell monolayers. Hypericin showed low-to-moderate permeability. An active transport process was potentially involved in the transfer of valerenic acid. Hyperforin and hypericin were mainly transported through passive transcellular diffusion. All compounds were not metabolized over 24 h in the artificial gut microbiota. Microbial SCFA production and bacterial viability was not substantially impaired nor promoted by exposure to the compounds or herbal extracts.
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Affiliation(s)
- Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Andrea Treyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Annelies Geirnaert
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Lea Bircher
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Angela Babst
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Vanessa Fabienne Abegg
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Christophe Lacroix
- Laboratory of Food Biotechnology, Institute of Food, Nutrition and Health, Department of Health Science and Technology, ETH Zurich, Zurich, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland.
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9
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Keller M, Winker M, Zimmermann-Klemd AM, Sperisen N, Gupta MP, Solis PN, Hamburger M, Potterat O, Gründemann C. Aryltetralin lignans from Hyptis brachiata inhibiting T lymphocyte proliferation. Biomed Pharmacother 2023; 160:114328. [PMID: 36739759 DOI: 10.1016/j.biopha.2023.114328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 01/23/2023] [Accepted: 01/27/2023] [Indexed: 02/05/2023] Open
Abstract
Increased activation and proliferation of T lymphocytes plays an essential role in the development of chronic inflammation and autoimmune diseases. Currently used immunosuppressive drugs often do not provide long-lasting relief of symptoms and show a gradual loss of efficacy over time, and are accompanied by various side effects. Therefore, novel immunosuppressive lead substances are needed. For this purpose, an in-house library consisting of 600 extracts of plants from Panama was screened for inhibition of human T lymphocyte proliferation. As one of the hits, an ethyl acetate extract from the aerial parts of Hyptis brachiata (Lamiaceae) exhibited strong inhibitory effects. Subsequent investigation resulted in the isolation of seven aryltetralin lignans, five arylnaphthalene lignans, two flavonoids, three triterpenes, and cinnamyl cinnamate. Aryltetralin lignans inhibited T lymphocyte proliferation in a concentration-dependent manner without induction of apoptosis. No relevant inhibition was observed for the arylnaphthalene lignans, flavonoids, and triterpenes. Additional cell cycle arrest investigations revealed that isolated aryltetralin lignans potently inhibited cell division in G2/M phase similarly to podophyllotoxin. Multifluorescence panel analyses of the extract also showed weak suppressive effects on the production of IL-2 and TNF-α. Therefore, preparations made out of H. brachiata could be further explored as an interesting herbal alternative in the treatment of autoimmune diseases.
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Affiliation(s)
- Morris Keller
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Moritz Winker
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Campus Rosental - Mattenstrasse 22, CH-4058 Basel, Switzerland
| | - Amy Marisa Zimmermann-Klemd
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Campus Rosental - Mattenstrasse 22, CH-4058 Basel, Switzerland
| | - Nino Sperisen
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Mahabir P Gupta
- Centro de Investigaciones Farmacognosticas de la Flora Panamena (CIFLORPAN), Facultad de Farmacia, Universidad de Panama, Panama City, Republic of Panama
| | - Pablo N Solis
- Centro de Investigaciones Farmacognosticas de la Flora Panamena (CIFLORPAN), Facultad de Farmacia, Universidad de Panama, Panama City, Republic of Panama
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, CH-4056 Basel, Switzerland.
| | - Carsten Gründemann
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Campus Rosental - Mattenstrasse 22, CH-4058 Basel, Switzerland.
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Spiess D, Abegg VF, Chauveau A, Rath J, Treyer A, Reinehr M, Kuoni S, Oufir M, Potterat O, Hamburger M, Simões-Wüst AP. Transplacental passage of hyperforin, hypericin, and valerenic acid. Front Pharmacol 2023; 14:1123194. [PMID: 37063288 PMCID: PMC10103840 DOI: 10.3389/fphar.2023.1123194] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 03/20/2023] [Indexed: 04/03/2023] Open
Abstract
Safe medications for mild mental diseases in pregnancy are needed. Phytomedicines from St. John’s wort and valerian are valid candidates, but safety data in pregnancy are lacking. The transplacental transport of hyperforin and hypericin (from St. John’s wort), and valerenic acid (from valerian) was evaluated using the ex vivo cotyledon perfusion model (4 h perfusions, term placentae) and, in part, the in vitro Transwell assay with BeWo b30 cells. Antipyrine was used for comparison in both models. U(H)PLC-MS/MS bioanalytical methods were developed to quantify the compounds. Perfusion data obtained with term placentae showed that only minor amounts of hyperforin passed into the fetal circuit, while hypericin did not cross the placental barrier and valerenic acid equilibrated between the maternal and fetal compartments. None of the investigated compounds affected metabolic, functional, and histopathological parameters of the placenta during the perfusion experiments. Data from the Transwell model suggested that valerenic acid does not cross the placental cell layer. Taken together, our data suggest that throughout the pregnancy the potential fetal exposure to hypericin and hyperforin – but not to valerenic acid – is likely to be minimal.
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Affiliation(s)
- Deborah Spiess
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Vanessa Fabienne Abegg
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Joshua Rath
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Andrea Treyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Michael Reinehr
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Sabrina Kuoni
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Mouhssin Oufir
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
- *Correspondence: Matthias Hamburger, ; Ana Paula Simões-Wüst,
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- *Correspondence: Matthias Hamburger, ; Ana Paula Simões-Wüst,
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11
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Keller M, Chabane S, Danton O, Prescimone A, Boudjelal A, Hamburger M, Potterat O. New neo-clerodane diterpenes from Teucrium polium subsp. capitatum. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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12
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Santos S, Zurfluh L, Mennet M, Potterat O, von Mandach U, Hamburger M, Simões-Wüst AP. Corrigendum: Bryophyllum pinnatum compounds inhibit oxytocin-induced signaling pathways in human myometrial cells. Front Pharmacol 2023; 14:1141346. [PMID: 36843937 PMCID: PMC9946688 DOI: 10.3389/fphar.2023.1141346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 01/20/2023] [Indexed: 02/11/2023] Open
Abstract
[This corrects the article DOI: 10.3389/fphar.2021.632986.].
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Affiliation(s)
- Stefanie Santos
- Department of Obstetrics, University Hospital Zürich (USZ), University of Zurich (UZH), Zurich, Switzerland,Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Leonie Zurfluh
- Department of Obstetrics, University Hospital Zürich (USZ), University of Zurich (UZH), Zurich, Switzerland
| | - Mónica Mennet
- Department of Obstetrics, University Hospital Zürich (USZ), University of Zurich (UZH), Zurich, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Ursula von Mandach
- Department of Obstetrics, University Hospital Zürich (USZ), University of Zurich (UZH), Zurich, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zürich (USZ), University of Zurich (UZH), Zurich, Switzerland,*Correspondence: Ana Paula Simões-Wüst,
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13
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Hajib A, Danton O, Keller M, Potterat O, Bougrin K, Charrouf Z, Hamburger M. Polyacetylenic caffeoyl amides from Ammodaucus leucotrichus. Phytochemistry 2023; 206:113555. [PMID: 36496003 DOI: 10.1016/j.phytochem.2022.113555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Six undescribed polyacetylenic caffeoyl amides, five known flavones and three known lignans were obtained from the fruits of the North African traditional medicinal plant Ammodaucus leucotrichus Coss. & Durieu (Apiaceae). Isolation was achieved by a combination of chromatographic methods, and structures were established by extensive 1D and 2D NMR spectroscopy, mass spectrometry, electronic circular dichroism, and by GC-MS analysis of sugar derivatives. Polyacetylenic caffeoyl amides are reported for the first time as specialized metabolites.
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Affiliation(s)
- Ahmed Hajib
- Laboratory of Bioactives and Molecules of Interest, National Agency of Medicinal and Aromatic Plants (ANPMA) BP 159, Principal, Taounate, 34000, Morocco; Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland; Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculty of Science, B.P. 1014, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center, Mohammed V University, Rabat, Morocco
| | - Ombeline Danton
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | - Morris Keller
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | - Olivier Potterat
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | - Khalid Bougrin
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculty of Science, B.P. 1014, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center, Mohammed V University, Rabat, Morocco
| | - Zoubida Charrouf
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculty of Science, B.P. 1014, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center, Mohammed V University, Rabat, Morocco
| | - Matthias Hamburger
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland.
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14
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Spiess D, Abegg VF, Chauveau A, Treyer A, Reinehr M, Oufir M, Duong E, Potterat O, Hamburger M, Simões-Wüst AP. Placental Passage of Protopine in an Ex Vivo Human Perfusion System. Planta Med 2023; 89:194-207. [PMID: 35445384 PMCID: PMC9868778 DOI: 10.1055/a-1829-9546] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
The placental passage of protopine was investigated with a human ex vivo placental perfusion model. The model was first validated with diazepam and citalopram, 2 compounds known to cross the placental barrier, and antipyrine as a positive control. All compounds were quantified by partially validated U(H)PLC-MS/MS bioanalytical methods. Protopine was transferred from the maternal to the fetal circuit, with a steady-state reached after 90 min. The study compound did not affect placental viability or functionality, as glucose consumption, lactate production, and beta-human chorionic gonadotropin, and leptin release remained constant. Histopathological evaluation of all placental specimens showed unremarkable, age-appropriate parenchymal maturation with no pathologic findings.
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Affiliation(s)
- Deborah Spiess
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Vanessa Fabienne Abegg
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Andrea Treyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Michael Reinehr
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Mouhssin Oufir
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Elisa Duong
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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15
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Baltov B, Beyl S, Baburin I, Reinhardt J, Szkokan P, Garifulina A, Timin E, Kraushaar U, Potterat O, Hamburger M, Kügler P, Hering S. Assay for evaluation of proarrhythmic effects of herbal products: Case study with 12 Evodia preparations. Toxicol Rep 2023; 10:589-599. [PMID: 37213814 PMCID: PMC10196857 DOI: 10.1016/j.toxrep.2023.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 04/11/2023] [Accepted: 04/24/2023] [Indexed: 05/23/2023] Open
Abstract
Guidelines for preclinical drug development reduce the occurrence of arrhythmia-related side effects. Besides ample evidence for the presence of arrhythmogenic substances in plants, there is no consensus on a research strategy for the evaluation of proarrhythmic effects of herbal products. Here, we propose a cardiac safety assay for the detection of proarrhythmic effects of plant extracts based on the experimental approaches described in the Comprehensive In vitro Proarrhythmia Assay (CiPA). Microelectrode array studies (MEAs) and voltage sensing optical technique on human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) were combined with ionic current measurements in mammalian cell lines, In-silico simulations of cardiac action potentials (APs) and statistic regression analysis. Proarrhythmic effects of 12 Evodia preparations, containing different amounts of the hERG inhibitors dehydroevodiamine (DHE) and hortiamine were analysed. Extracts produced different prolongation of the AP, occurrence of early after depolarisations and triangulation of the AP in hiPSC-CMs depending on the contents of the hERG inhibitors. DHE and hortiamine dose-dependently prolonged the field potential duration in hiPSC-CMs studied with MEAs. In-silico simulations of ventricular AP support a scenario where proarrhythmic effects of Evodia extracts are predominantly caused by the content of the selective hERG inhibitors. Statistic regression analysis revealed a high torsadogenic risk for both compounds that was comparable to drugs assigned to the high-risk category in a CiPA study.
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Affiliation(s)
- Bozhidar Baltov
- Division of Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
- ChanPharm GmbH, Am Kanal 27, 1110 Vienna, Austria
| | | | - Igor Baburin
- ChanPharm GmbH, Am Kanal 27, 1110 Vienna, Austria
| | - Jakob Reinhardt
- Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | | | - Aleksandra Garifulina
- Division of Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
| | - Eugen Timin
- ChanPharm GmbH, Am Kanal 27, 1110 Vienna, Austria
| | - Udo Kraushaar
- NMI Natural and Medical Sciences Institute at the University of Tuebingen, Reutlingen, Germany
| | - Olivier Potterat
- Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Matthias Hamburger
- Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Philipp Kügler
- University of Hohenheim, Institute of Applied Mathematics and Statistics and Computational Science Hub, 70599 Stuttgart, Germany
| | - Steffen Hering
- Division of Pharmacology and Toxicology, Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
- ChanPharm GmbH, Am Kanal 27, 1110 Vienna, Austria
- Correspondence to: Am Kanal 27,2/3/5–7, 1110 Vienna, Austria.
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16
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Spiess D, Winker M, Chauveau A, Abegg VF, Potterat O, Hamburger M, Gründemann C, Simões-Wüst AP. Medicinal Plants for the Treatment of Mental Diseases in Pregnancy: An In Vitro Safety Assessment. Planta Med 2022; 88:1036-1046. [PMID: 34624906 PMCID: PMC9519192 DOI: 10.1055/a-1628-8132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 08/31/2021] [Indexed: 06/13/2023]
Abstract
Pregnancy is a critical period for medical care, during which the well-being of woman and fetus must be considered. This is particularly relevant in managing non-psychotic mental disorders since treatment with central nervous system-active drugs and untreated NMDs may have negative effects. Some well-known herbal preparations (phytopharmaceuticals), including St. John's wort, California poppy, valerian, lavender, and hops, possess antidepressant, sedative, anxiolytic, or antidepressant properties and could be used to treat mental diseases such as depression, restlessness, and anxiety in pregnancy. Our goal was to assess their safety in vitro, focusing on cytotoxicity, induction of apoptosis, genotoxicity, and effects on metabolic properties and differentiation in cells widely used as a placental cell model (BeWo b30 placenta choriocarcinoma cells). The lavender essential oil was inconspicuous in all experiments and showed no detrimental effects. At low-to-high concentrations, no extract markedly affected the chosen safety parameters. At an artificially high concentration of 100 µg/mL, extracts from St. John's wort, California poppy, valerian, and hops had minimal cytotoxic effects. None of the extracts resulted in genotoxic effects or altered glucose consumption or lactate production, nor did they induce or inhibit BeWo b30 cell differentiation. This study suggests that all tested preparations from St. John's wort, California poppy, valerian, lavender, and hops, in concentrations up to 30 µg/mL, do not possess any cytotoxic or genotoxic potential and do not compromise placental cell viability, metabolic activity, and differentiation. Empirical and clinical studies during pregnancy are needed to support these in vitro data.
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Affiliation(s)
- Deborah Spiess
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Moritz Winker
- Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, University of Freiburg, Faculty of Medicine, Freiburg, Germany
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Vanessa Fabienne Abegg
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Carsten Gründemann
- Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, University of Freiburg, Faculty of Medicine, Freiburg, Germany
- Translational Complementary Medicine, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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17
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Heinrich M, Jalil B, Abdel-Tawab M, Echeverria J, Kulić Ž, McGaw LJ, Pezzuto JM, Potterat O, Wang JB. Best Practice in the chemical characterisation of extracts used in pharmacological and toxicological research—The ConPhyMP—Guidelines12. Front Pharmacol 2022; 13:953205. [PMID: 36176427 PMCID: PMC9514875 DOI: 10.3389/fphar.2022.953205] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/18/2022] [Indexed: 12/22/2022] Open
Abstract
Background: Research on medicinal plants and extracts derived from them differs from studies performed with single compounds. Extracts obtained from plants, algae, fungi, lichens or animals pose some unique challenges: they are multicomponent mixtures of active, partially active and inactive substances, and the activity is often not exerted on a single target. Their composition varies depending on the method of preparation and the plant materials used. This complexity and variability impact the reproducibility and interpretation of pharmacological, toxicological and clinical research. Objectives: This project develops best practice guidelines to ensure reproducibility and accurate interpretations of studies using medicinal plant extracts. The focus is on herbal extracts used in pharmacological, toxicological, and clinical/intervention research. Specifically, the consensus-based statement focuses on defining requirements for: 1) Describing the plant material/herbal substances, herbal extracts and herbal medicinal products used in these studies, and 2) Conducting and reporting the phytochemical analysis of the plant extracts used in these studies in a reproducible and transparent way. The process and methods: We developed the guidelines through the following process: 1) The distinction between the three main types of extracts (extract types A, B, and C), initially conceptualised by the lead author (MH), led the development of the project as such; 2) A survey among researchers of medicinal plants to gather global perspectives, opportunities, and overarching challenges faced in characterising medicinal plant extracts under different laboratory infrastructures. The survey responses were central to developing the guidelines and were reviewed by the core group; 3) A core group of 9 experts met monthly to develop the guidelines through a Delphi process; and. 4) The final draft guidelines, endorsed by the core group, were also distributed for feedback and approval to an extended advisory group of 20 experts, including many journal editors. Outcome: The primary outcome is the “Consensus statement on the Phytochemical Characterisation of Medicinal Plant extracts“ (ConPhyMP) which defines the best practice for reporting the starting plant materials and the chemical methods recommended for defining the chemical compositions of the plant extracts used in such studies. The checklist is intended to be an orientation for authors in medicinal plant research as well as peer reviewers and editors assessing such research for publication.
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Affiliation(s)
- Michael Heinrich
- Pharmacognosy and Phytotherapy, UCL School of Pharmacy, London, United Kingdom
- *Correspondence: Michael Heinrich,
| | - Banaz Jalil
- Pharmacognosy and Phytotherapy, UCL School of Pharmacy, London, United Kingdom
| | - Mona Abdel-Tawab
- Central Laboratory of German Pharmacists, Eschborn, Germany/Institute of Pharmaceutical Chemistry, Johann-Wolfgang-Goethe University, Frankfurt, Germany
| | - Javier Echeverria
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Žarko Kulić
- Preclinical Research and Development, Dr. Willmar Schwabe GmbH & Co. KG, Karlsruhe, Germany
| | - Lyndy J. McGaw
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - John M. Pezzuto
- College of Pharmacy and Health Sciences, Western New England University, Springfield, MA, United States
| | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Jia-Bo Wang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
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18
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Heng MY, Thuerig B, Danton O, Ramseyer J, Gupta MP, Tamm L, Hamburger M, Potterat O. Ingadosides A-C, acacic acid-type saponins from Inga sapindoides with potent inhibitory activity against downy mildew. Phytochemistry 2022; 199:113183. [PMID: 35398089 DOI: 10.1016/j.phytochem.2022.113183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 03/23/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
As part of a project aiming at the discovery of environmentally friendly alternatives to copper in organic agriculture, a 96% ethanolic extract from the leaves of Inga sapindoides showed potent inhibitory activity against grapevine downy mildew (Plasmopara viticola) in vitro (MIC100 25 μg/mL). Separation of the n-BuOH soluble fraction by silica gel column chromatography followed by a combination of RP18 and HILIC HPLC resulted in the isolation of a series of bidesmosidic saponins characterized by the presence of a monoterpenoid unit attached to a triterpenoid aglycone, a p-methoxycinnamoyl residue, and rare sugar residues such as N-acetyl-d-glucosamine, d-quinovose, and d-fucose. The isolated compounds inhibited the formation or activity of P. viticola zoospores with MIC100 values of 3 or 6 μg/mL, respectively. I. sapindoides, a tree which is often cultivated for shading coffee plantations in Central America, may represent a sustainable source of fungicidal products to be used in the replacement of copper.
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Affiliation(s)
- Ming Yuan Heng
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | - Barbara Thuerig
- Research Institute of Organic Agriculture FiBL, Ackerstrasse 113, 5070, Frick, Switzerland
| | - Ombeline Danton
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | - Justine Ramseyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | - Mahabir P Gupta
- Center for Pharmacognostic Research on Panamanian Flora, Faculty of Pharmacy, University of Panama City, Panama
| | - Lucius Tamm
- Research Institute of Organic Agriculture FiBL, Ackerstrasse 113, 5070, Frick, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland.
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19
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Kim J, Gousopoulos E, Faleschini TM, Hamburger M, Potterat O, Detmar M. Pheophorbide a identified in an Eupatorium perfoliatum extract is a novel lymphatic vascular activator. Biomed Pharmacother 2022; 147:112664. [DOI: 10.1016/j.biopha.2022.112664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/15/2022] [Accepted: 01/24/2022] [Indexed: 11/02/2022] Open
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20
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Schäfer AM, Gilgen PM, Spirgi C, Potterat O, Meyer Zu Schwabedissen HE. Constituents of Passiflora incarnata, but Not of Valeriana officinalis, Interact with the Organic Anion Transporting Polypeptides (OATP)2B1 and OATP1A2. Planta Med 2022; 88:152-162. [PMID: 33511622 DOI: 10.1055/a-1305-3936] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Herbal medication used in the treatment of sleep disorders and anxiety often contain extracts of Valeriana officinalis or Passiflora incarnata. Valerenic acid in V. officinalis and apigenin, orientin, and vitexin in P. incarnata are thought to contribute to their therapeutic effect. It was the aim of this study to test whether these constituents of herbal extracts are interacting with the uptake of estrone 3-sulfate, pregnenolone sulfate, and dehydroepiandrosterone sulfate mediated by the uptake transporters organic anion transporting polypeptide 2B1 (OATP2B1) or organic anion transporting polypeptide 1A2 (OATP1A2). Madin-Darby canine kidney cells overexpressing OATP2B1 or OATP1A2 were used to determine the influence of the constituents on the cellular accumulation of the sulfated steroids. Subsequently, competitive counterflow experiments were applied to test whether identified inhibitors are also substrates of the transporters. Valerenic acid only interacted with OATP2B1, whereas apigenin, orientin, and vitexin interacted with OATP2B1 and OATP1A2. Competitive counterflow revealed that orientin is a substrate of both transporters, while apigenin was transported by OATP1A2 and vitexin by OATP2B1. In a next step, commercially available P. incarnata preparations were assessed for their influence on the transporters, revealing inhibition of transporter-mediated estrone 3-sulfate uptake. HPLC-UV-MS analysis confirmed the presence of orientin and vitexin in these preparations, thereby suggesting that these constituents are involved in the interaction. Our data indicate that constituents of P. incarnata may alter the function of OATP2B1 and OATP1A2, which could affect the uptake of other compounds relying on uptake mediated by the transporters.
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Affiliation(s)
- Anima M Schäfer
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Pierrine M Gilgen
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Clara Spirgi
- Biopharmacy, Department Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Pharmaceutical Biology, Department Pharmaceutical Sciences, University of Basel, Basel, Switzerland
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21
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Spiess D, Abegg VF, Chauveau A, Treyer A, Reinehr M, Oufir M, Duong E, Potterat O, Hamburger M, Simões-Wüst AP. Placental Passage of Humulone and Protopine in an Ex Vivo Human Perfusion System. Planta Med 2021; 87:1192-1205. [PMID: 34530480 PMCID: PMC8585570 DOI: 10.1055/a-1578-3803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 07/28/2021] [Indexed: 05/07/2023]
Abstract
The placental passage of humulone and protopine was investigated with a human ex vivo placental perfusion model. The model was first validated with diazepam and citalopram, 2 compounds known to cross the placental barrier, and antipyrine as a positive control. All compounds were quantified by partially validated U(H)PLC-MS/MS bioanalytical methods. Only a small portion of humulone initially present in the maternal circuit reached the fetal circuit. The humulone concentration in the maternal circuit rapidly decreased, likely due to metabolization in the placenta. Protopine was transferred from the maternal to the fetal circuit, with a steady-state reached after 90 min. None of the study compounds affected placental viability or functionality, as glucose consumption, lactate production, beta-human chorionic gonadotropin, and leptin release remained constant. Histopathological evaluation of all placental specimens showed unremarkable, age-appropriate parenchymal maturation with no pathologic findings.
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Affiliation(s)
- Deborah Spiess
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Vanessa Fabienne Abegg
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Andrea Treyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Michael Reinehr
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Mouhssin Oufir
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Elisa Duong
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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Spiess D, Abegg VF, Chauveau A, Treyer A, Reinehr M, Oufir M, Duong E, Potterat O, Hamburger M, Simões-Wüst AP. Correction: Placental Passage of Humulone and Protopine in an Ex Vivo Human Perfusion System. Planta Med 2021. [PMID: 34638140 DOI: 10.1055/a-1666-5352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Deborah Spiess
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Vanessa Fabienne Abegg
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Antoine Chauveau
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Andrea Treyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Michael Reinehr
- Department of Pathology and Molecular Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Mouhssin Oufir
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Elisa Duong
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zurich, University of Zurich, Zurich, Switzerland
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Keller M, Fankhauser S, Giezendanner N, König M, Keresztes F, Danton O, Fertig O, Marcourt L, Hamburger M, Butterweck V, Potterat O. Saponins from Saffron Corms Inhibit the Gene Expression and Secretion of Pro-Inflammatory Cytokines. J Nat Prod 2021; 84:630-645. [PMID: 33600177 DOI: 10.1021/acs.jnatprod.0c01220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Corms are obtained as a byproduct during the cultivation of saffron (Crocus sativus). In a project aimed at the valorization of this waste product, we observed that a 70% EtOH extract of the corms and a sugar-depleted MeOH fraction of the extract inhibited the TNF-α/IFN-γ-induced secretion and gene expression of the chemokines IL-8, MCP-1, and RANTES in human HaCaT cells. The effects were in part stronger than those of the positive control hydrocortisone. For preparative isolation, the 70% EtOH extract was partitioned between n-BuOH and water. Separation of the n-BuOH-soluble fraction by centrifugal partition chromatography, followed by preparative and semipreparative HPLC, afforded a series of bidesmosidic glycosides of echinocystic acid bearing a 3,16-dihydroxy-10-oxo-hexadecanoic acid residue attached to the glycosidic moiety at C-28. They include azafrines 1 and 2, previously reported in saffron, and eight new congeners named azafrines 3-10. Saffron saponins significantly inhibited TNF-α/IFN-γ-induced secretion of RANTES in human HaCaT cells at 1 μM (p < 0.001). Some of them further lowered TNF-α/IFN-γ-induced gene expression.
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Affiliation(s)
- Morris Keller
- Pharmaceutical Biology, Pharmacenter, University of Basel, 4056 Basel, Switzerland
| | - Sarah Fankhauser
- School of Life Sciences, University of Applied Sciences, Northwestern Switzerland, 4132 Muttenz, Switzerland
| | - Noreen Giezendanner
- School of Life Sciences, University of Applied Sciences, Northwestern Switzerland, 4132 Muttenz, Switzerland
| | - Michelle König
- School of Life Sciences, University of Applied Sciences, Northwestern Switzerland, 4132 Muttenz, Switzerland
| | - Franziska Keresztes
- Pharmaceutical Biology, Pharmacenter, University of Basel, 4056 Basel, Switzerland
| | - Ombeline Danton
- Pharmaceutical Biology, Pharmacenter, University of Basel, 4056 Basel, Switzerland
| | - Orlando Fertig
- Pharmaceutical Biology, Pharmacenter, University of Basel, 4056 Basel, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences and Institute of Pharmaceutical Sciences of Western Switzerland (ISPSW), University of Geneva, CMU, 1211 Geneva 4, Switzerland
| | - Matthias Hamburger
- Pharmaceutical Biology, Pharmacenter, University of Basel, 4056 Basel, Switzerland
| | - Veronika Butterweck
- School of Life Sciences, University of Applied Sciences, Northwestern Switzerland, 4132 Muttenz, Switzerland
| | - Olivier Potterat
- Pharmaceutical Biology, Pharmacenter, University of Basel, 4056 Basel, Switzerland
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Santos S, Zurfluh L, Mennet M, Potterat O, von Mandach U, Hamburger M, Simões-Wüst AP. Bryophyllum pinnatum Compounds Inhibit Oxytocin-Induced Signaling Pathways in Human Myometrial Cells. Front Pharmacol 2021; 12:632986. [PMID: 33679416 PMCID: PMC7930719 DOI: 10.3389/fphar.2021.632986] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/18/2021] [Indexed: 11/13/2022] Open
Abstract
Bryophyllum pinnatum has been used in the treatment of premature labor, first in anthroposophic hospitals and, recently, in conventional settings as an add-on medication. In vitro work with hTERT human myometrial cells showed that B. pinnatum leaf press juice inhibits the increase of intracellular free calcium concentration induced by oxytocin, a hormone known to play a role in labor. Our aim was to identify fractions/compounds in B. pinnatum press juice that contribute to this inhibitory effect, and to investigate their effect on oxytocin-driven activation of the MAPK cascade. Several fractions/compounds from B. pinnatum press juice led to a concentration-dependent decrease of oxytocin-induced increase of intracellular free calcium concentration, but none of them was as strong as B. pinnatum press juice. However, the combination of a bufadienolide and a flavonoid-enriched fraction was as effective as B. pinnatum press juice, and their combination had a synergistic effect. B. pinnatum press juice inhibited oxytocin-driven activation of MAPKs SAPK/JNK and ERK1/2, an effect also exerted by the bufadienolide-enriched fraction. The effect of B. pinnatum press juice on oxytocin-induced signaling pathways was comparable to that of the oxytocin-receptor antagonist and tocolytic agent atosiban. Our findings further substantiate the use of B. pinnatum press juice preparations in the treatment of preterm labor.
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Affiliation(s)
- Stefanie Santos
- Department of Obstetrics, University Hospital Zurich (USZ), University of Zurich (UZH), Zurich, Switzerland,Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Leonie Zurfluh
- Department of Obstetrics, University Hospital Zurich (USZ), University of Zurich (UZH), Zurich, Switzerland
| | | | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Ursula von Mandach
- Department of Obstetrics, University Hospital Zurich (USZ), University of Zurich (UZH), Zurich, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Ana Paula Simões-Wüst
- Department of Obstetrics, University Hospital Zurich (USZ), University of Zurich (UZH), Zurich, Switzerland,*Correspondence: Ana Paula Simões-Wüst,
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Durrer M, Mevissen M, Holinger M, Hamburger M, Graf-Schiller S, Mayer P, Potterat O, Bruckmaier R, Walkenhorst M. Effects of a Multicomponent Herbal Extract on the Course of Subclinical Ketosis in Dairy Cows - a Blinded Placebo-controlled Field-study. Planta Med 2020; 86:1375-1388. [PMID: 33003231 DOI: 10.1055/a-1260-3148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A blinded placebo-controlled multi-center on-farm trial was conducted in dairy cows with subclinical ketosis to investigate effects of a multicomponent herbal extract. Blood ketone levels were measured weekly in early lactating cows from 16 Swiss herds. Cows were subclassified based on their initial blood-β-hydroxybutyrate levels (≥ 1.0 [KET-low, 84 cows] and > 1.2 mmol/L [KET-high, 39 cows]) and randomly distributed to 3 groups treated orally with herbal extract containing Camellia sinensis, Cichcorium intybus, Gentiana lutea, Glycyrrhiza glabra, Taraxacum officinale, Trigonella foenum-graecum, and Zingiber officinale, sodium propionate, or placebo twice a day for 5 days. Milk yield, milk acetone, blood-β-hydroxybutyrate, glucose, nonesterified fatty acids, gamma-glutamyl transferase, and glutamate dehydrogenase were analyzed over 2 wk. Linear mixed effect models were used for data analysis. No effects were found for nonesterifed fatty acids, gamma-glutamyl transferase, and glucose. Significantly higher glutamate dehydrogenase (29.71 U/L) values were found in herbal extract-treated animals compared to sodium propionate on day 7 (22.33 U/L). By trend, higher blood-β-hydroxybutyrate levels (1.36 mmol/L) were found in the placebo group of KET-high-cows on day 14 compared to the sodium propionate group (0.91 mmol/L). Milk yields of all treatment groups increased. Milking time and treatment showed a significant interaction for milk acetone: sodium propionate led to an immediate decrease, whereas herbal extracts resulted in a milk acetone decrease from day 7 on, reaching significantly lower milk acetone on day 14 (3.17 mg/L) when compared to placebo (4.89 mg/L). In conclusion, herbal extracts and sodium propionate are both likely to improve subclinical ketosis in dairy cows, however, by different modes of action.
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Affiliation(s)
- Manuela Durrer
- Department of Clinical Research and Veterinary Public Health, Division of Veterinary Pharmacology and Toxicology, Vetsuisse Faculty, University of Bern, Switzerland
- Department of Livestock Science, Research Institute of Organic Agriculture (FiBL), Frick, Switzerland
| | - Meike Mevissen
- Department of Clinical Research and Veterinary Public Health, Division of Veterinary Pharmacology and Toxicology, Vetsuisse Faculty, University of Bern, Switzerland
| | - Mirjam Holinger
- Department of Livestock Science, Research Institute of Organic Agriculture (FiBL), Frick, Switzerland
| | - Matthias Hamburger
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | | | | | - Olivier Potterat
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Rupert Bruckmaier
- Department of Clinical Research and Veterinary Public Health, Division of Veterinary Physiology, Vetsuisse Faculty, University of Bern, Switzerland
| | - Michael Walkenhorst
- Department of Livestock Science, Research Institute of Organic Agriculture (FiBL), Frick, Switzerland
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Drescher C, Keller M, Potterat O, Hamburger M, Brückner R. Structure-Elucidating Total Synthesis of the (Polyenoyl)tetramic Acid Militarinone C§. Org Lett 2020; 22:2559-2563. [PMID: 32191484 DOI: 10.1021/acs.orglett.0c00431] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The (polyenoyl)tetramic acid militarinone C (1) heads a family of seven members. Before our work, the configuration of C-5 was unknown whereas the configurations of C-8' and C-10' were either (R,R) or (S,S). We synthesized the four stereoisomers of constitution 1, which conform with these insights. This included cross-coupling both enantiomers of the western building block (8) with both enantiomers of the eastern building block (9). The specific rotations of the resulting 1 isomers suggested that natural 1 is configured like the coupling partners (S)-8 and (R,R)-9. This conclusion was corroborated by degrading natural 1 to alcohol 35 and by proving its configurational identity with synthetic (R,R)-35.
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Affiliation(s)
- Christian Drescher
- Institut für Organische Chemie, Albert-Ludwigs-Universität, Albertstrasse 21, D-79104 Freiburg, Germany
| | - Morris Keller
- Pharmazeutische Biologie, Universität Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Olivier Potterat
- Pharmazeutische Biologie, Universität Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Matthias Hamburger
- Pharmazeutische Biologie, Universität Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Reinhard Brückner
- Institut für Organische Chemie, Albert-Ludwigs-Universität, Albertstrasse 21, D-79104 Freiburg, Germany
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Walkenhorst M, Leiber F, Maeschli A, Kapp AN, Spengler-Neff A, Faleschini MT, Garo E, Hamburger M, Potterat O, Mayer P, Graf-Schiller S, Bieber A. A multicomponent herbal feed additive improves somatic cell counts in dairy cows - a two stage, multicentre, placebo-controlled long-term on-farm trial. J Anim Physiol Anim Nutr (Berl) 2020; 104:439-452. [PMID: 32020681 DOI: 10.1111/jpn.13297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 12/28/2022]
Abstract
In contrast to natural and historical diets of wild and domesticated ruminants, the diversity of plant species is limited in diets of modern dairy cows. Are "production diseases" linked to this? We conducted a trial to test the effects of a multicomponent herbal feed additive (HFA) on health, performance and fertility traits. A dose-finding study (DF) with 62 cows on 11 commercial farms compared a low (50 g) and a high (100 g) dose of HFA (HFA-50, HFA-100) with a placebo (PL). In a subsequent field trial (FT) with 280 cows on 30 commercial farms, HFA-100 was compared to PL. Cows were randomly assigned to HFA and PL groups and received HFA or PL individually daily from 14 days pre- to 300 days post-calving. Data were analysed with mixed effects models. No differences between HFA and PL were found regarding performance, body condition score and overall culling rates. A tendency towards lower milk urea for HFA-100 compared to PL (p = .06) was found in DF. HFA significantly reduced elevated milk acetone observations (≥10 mg/L) in the first 10 lactation weeks (HFA-100: 4%; HFA-50: 4%; PL: 12%) in DF. HFA-50 significantly reduced lameness incidence (HFA-100: 11%; HFA-50: 2%; PL: 14%) in DF. Calving intervals were 15 days shorter in HFA compared to PL in both trials, which could be confirmed by tendency (p = .07) in FT. In both trials, the proportion of test days with elevated somatic cell score (≥3.0) was significantly lower in HFA compared to PL (DF: HFA-100: 40%, HFA-50: 45% and PL: 55%; FT: HFA-100: 38% and PL: 55%) which is also reflected by tendency (p = .08) in lower culling rates due to udder diseases in FT. HFA showed no negative impact on any of the measured parameters. The effects of HFA indicate a potential of phytochemically rich and diverse feed additives for dairy cows' nutrition and physiology.
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Affiliation(s)
- Michael Walkenhorst
- Department of Livestock Sciences, FiBL, Research Institute of Organic Agriculture, Frick, Switzerland
| | - Florian Leiber
- Department of Livestock Sciences, FiBL, Research Institute of Organic Agriculture, Frick, Switzerland
| | - Ariane Maeschli
- Department of Livestock Sciences, FiBL, Research Institute of Organic Agriculture, Frick, Switzerland
| | - Alexandra N Kapp
- Department of Livestock Sciences, FiBL, Research Institute of Organic Agriculture, Frick, Switzerland
| | - Anet Spengler-Neff
- Department of Livestock Sciences, FiBL, Research Institute of Organic Agriculture, Frick, Switzerland
| | - Maria Teresa Faleschini
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Eliane Garo
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Matthias Hamburger
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | | | | | - Anna Bieber
- Department of Livestock Sciences, FiBL, Research Institute of Organic Agriculture, Frick, Switzerland
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Santos S, Haslinger C, Klaic K, Faleschini MT, Mennet M, Potterat O, von Mandach U, Hamburger M, Simões-Wüst AP. A Bufadienolide-Enriched Fraction of Bryophyllum pinnatum Inhibits Human Myometrial Contractility In Vitro. Planta Med 2019; 85:385-393. [PMID: 30562827 DOI: 10.1055/a-0810-7704] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bryophyllum pinnatum has been used since the 1970s to prevent premature labour, first in anthroposophic hospitals and, more recently, also in the main Swiss perinatal centres. However, it is not known which compounds in B. pinnatum leaves contribute to the tocolytic effect. Here we studied the effects of a flavonoid-enriched fraction, the corresponding flavonoid aglycon mixture, a bufadienolide-enriched fraction, and B. pinnatum leaf press juice on human myometrial contractility in vitro. The strength (area under the curve and amplitude) and frequency of contractions were recorded using strips of human myometrium mounted in an organ bath system. Cell viability assays were performed with the human myometrium hTERT-C3 and PHM1 - 41 cell lines. Repeated addition of the flavonoid-enriched fraction, flavonoid aglycon mixture, bufadienolide-enriched fraction, or B. pinnatum leaf press juice led to a progressive decrease of contraction strength, without jeopardising the vitality of myometrium strips. The bufadienolide-enriched fraction was the most active, since 1 µg/mL of the bufadienolide-enriched fraction lowered the area under the curve to 40.1 ± 11.8% of the initial value, whereas 150 µg/mL of the flavonoid-enriched fraction, 6.2 µg/mL of the flavonoid aglycon mixture, and 10 µg/mL of the B. pinnatum leaf press juice were required to achieve comparable inhibition. A progressive increase of contraction frequency was observed, except in the case of the flavonoid aglycon mixture, which did not affect frequency. None of the test substances decreased myometrial cell viability, even at concentrations of 500 µg/mL of the flavonoid-enriched fraction, 40 µg/mL of the flavonoid aglycon mixture, 3.8 µg/mL of the bufadienolide-enriched fraction, and 75 µg/mL of the B. pinnatum leaf press juice, i.e., higher than those used in the myometrium experiments. Given the concentrations of flavonoids in the flavonoid-enriched fraction and B. pinnatum leaf press juice, and of bufadienolides in the bufadienolide-enriched fraction and B. pinnatum leaf press juice, it appears that bufadienolides may be mainly responsible for the relaxant effect.
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Affiliation(s)
- Stefanie Santos
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | | | - Kristian Klaic
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland
| | - Maria T Faleschini
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | | | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Ursula von Mandach
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
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Syafni N, Moradi-Afrapoli F, Danton O, Wilhelm A, Stadler M, Hering S, Potterat O, Hamburger M. HPLC-Based Activity Profiling for GABA A Receptor Modulators in Murraya exotica. Nat Prod Commun 2019. [DOI: 10.1177/1934578x1901400112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A dichloromethane extract from twigs and leaves of Murraya exotica produced allosteric potentiation of gamma aminobutyric acid (GABA) induced chloride currents in a microelectrode assay in Xenopus laevis oocytes expressing GABA receptors of α1, β2, γ2s subunit composition. The activity was tracked by HPLC-based activity profiling utilizing a zebrafish locomotor activity assay. Osthol (9) was identified as the main active compound. In addition, five other coumarins and four flavonols were identified. Osthol (9) and structurally related coumurrayin (10) were tested in the Xenopus oocyte assay. Compound 9 potentiated GABAA-induced chloride currents by 487 ± 42%, with an EC50 of 46 ± 10 μM, while 10 showed negligible effects on chloride currents. In silico evaluation of physicochemical properties showed that 9 and 10 had properties that are favorable for oral bioavailability and BBB permeability.
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Affiliation(s)
- Nova Syafni
- Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
- Faculty of Pharmacy/Sumatran Biota Laboratory, Andalas University, 25163 Padang, West Sumatra, Indonesia
| | | | - Ombeline Danton
- Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Anke Wilhelm
- Faculty of Natural and Agricultural Sciences, University of the Free State, 9300 Bloemfontein, Republic of South Africa
| | - Marco Stadler
- Department of Pharmacology and Toxicology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Steffen Hering
- Department of Pharmacology and Toxicology, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Olivier Potterat
- Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Matthias Hamburger
- Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
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Tabefam M, Moridi Farimani M, Danton O, Ramseyer J, Nejad Ebrahimi S, Neuburger M, Kaiser M, Salehi P, Potterat O, Hamburger M. Antiprotozoal Isoprenoids from Salvia hydrangea. J Nat Prod 2018; 81:2682-2691. [PMID: 30565934 DOI: 10.1021/acs.jnatprod.8b00498] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fractionation of the n-hexane extract of Salvia hydrangea afforded seven isoprenoids including six new compounds (1-6) and salvadione A (7). Their structures were established by comprehensive spectroscopic and spectrometric data analysis (1D and 2D NMR, HRMS). The absolute configuration of salvadione A (7) was established by single-crystal X-ray diffraction analysis with Cu/Kα radiation. In addition, the absolute configuration of all compounds was determined by electronic circular dichroism spectroscopy. A biosynthetic pathway for the formation of the scaffold of 1 is proposed. The antiprotozoal activity of the compounds against Trypanosoma brucei rhodesiense, Trypanosoma cruzi, Leishmania donovani, and Plasmodium falciparum was determined, and cytotoxicity was assessed in rat myoblast L6 cells. Perovskone C (2) exhibited good activity against P. falciparum (IC50 0.6 μM) and a selectivity index of 62.2.
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Affiliation(s)
- Marzieh Tabefam
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute , Shahid Beheshti University , G. C., Evin , Tehran , Iran
- Department of Pharmaceutical Biology , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
| | - Mahdi Moridi Farimani
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute , Shahid Beheshti University , G. C., Evin , Tehran , Iran
| | - Ombeline Danton
- Department of Pharmaceutical Biology , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
| | - Justine Ramseyer
- Department of Pharmaceutical Biology , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
| | - Samad Nejad Ebrahimi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute , Shahid Beheshti University , G. C., Evin , Tehran , Iran
| | - Markus Neuburger
- Inorganic Chemistry, Department of Chemistry , University of Basel , Mattenstrasse 24a , 4058 Basel , Switzerland
| | - Marcel Kaiser
- Swiss Tropical and Public Health Institute , Socinstrasse 57 , 4002 Basel , Switzerland
- University of Basel , 4001 Basel , Switzerland
| | - Peyman Salehi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute , Shahid Beheshti University , G. C., Evin , Tehran , Iran
| | - Olivier Potterat
- Department of Pharmaceutical Biology , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
| | - Matthias Hamburger
- Department of Pharmaceutical Biology , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
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Schäfer AM, Potterat O, Seibert I, Fertig O, Meyer zu Schwabedissen HE. Hyperforin-Induced Activation of the Pregnane X Receptor Is Influenced by the Organic Anion-Transporting Polypeptide 2B1. Mol Pharmacol 2018; 95:313-323. [DOI: 10.1124/mol.118.114066] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 12/17/2018] [Indexed: 01/18/2023] Open
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Tabefam M, Farimani MM, Danton O, Ramseyer J, Kaiser M, Ebrahimi SN, Salehi P, Batooli H, Potterat O, Hamburger M. Antiprotozoal Diterpenes from Perovskia abrotanoides. Planta Med 2018; 84:913-919. [PMID: 29698984 DOI: 10.1055/a-0608-4946] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
As part of a screening for new antiparasitic natural products from Iranian plants, n-hexane and ethyl acetate extracts from the aerial parts of Perovskia abrotanoides were found to exhibit strong inhibitory activity against Trypanosoma brucei rhodesiense and Leishmania donovani. The activity was tracked by high-performance liquid chromatography (HPLC)-based activity profiling. Preparative isolation by a combination of silica gel column chromatography and HPLC afforded 17 diterpenoids (1: -17: ), including 14 abietane-, two icetexane-, and one isopimarane-type derivatives. Among these, (5R,10S)-11-hydroxy-12-methoxy-20-norabieta-8,11,13-triene (2: ), 12-hydroxy-norabieta-1(10),8,11,13-tetraene-1,11-furan (6: ), and 12-methoxybarbatusol (9: ) were new compounds, the structure of which was established by comprehensive spectroscopic data analysis (one- and two-dimensional nuclear magnetic resonance, high-resolution electrospray ionization mass spectrometry, electronic circular dichroism). The antiprotozoal activity of the isolated compounds was evaluated against T. b. rhodesiense, Trypanosoma cruzi, L. donovani, and Plasmodium falciparum. Selectivity indexes (SI) were calculated in comparison to cytotoxicity on rat myoblast (L6) cells. Particularly active were 7α-ethoxyrosmanol (4: ) with an IC50 of 0.8 µM against T. b. rhodesiense (SI 14.9) and an IC50 of 1.8 µM (SI 6.9) against L. donovani, ferruginol (8: ) with an IC50 of 2.9 µM (SI 19.2) against P. falciparum, and miltiodiol (10: ) with an IC50 of 0.5 µM (SI 10.5) against T. b. rhodesiense. None of the compounds exhibited selective toxicity against T. cruzi (SI ≤ 1.6).
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Affiliation(s)
- Marzieh Tabefam
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C., Evin, Tehran, Iran
- Division of Pharmaceutical Biology, University of Basel, Switzerland
| | - Mahdi Moridi Farimani
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C., Evin, Tehran, Iran
| | - Ombeline Danton
- Division of Pharmaceutical Biology, University of Basel, Switzerland
| | - Justine Ramseyer
- Division of Pharmaceutical Biology, University of Basel, Switzerland
| | - Marcel Kaiser
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Samad N Ebrahimi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C., Evin, Tehran, Iran
| | - Peyman Salehi
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C., Evin, Tehran, Iran
| | - Hossien Batooli
- Kashan Botanical Garden, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
| | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Switzerland
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Steinborn C, Potterat O, Meyer U, Trittler R, Stadlbauer S, Huber R, Gründemann C. In Vitro Anti-inflammatory Effects of Equisetum arvense Are Not Solely Mediated by Silica. Planta Med 2018; 84:519-526. [PMID: 29202511 DOI: 10.1055/s-0043-123075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Equisetum arvense, known as common horsetail, is used for the treatment of inflammatory diseases and is the plant with the highest concentration of silica. Yet it is unknown if the medicinal properties are mediated by its silica content. In the current study, optimal conditions for silica-rich horsetail preparations were identified. Bioactivity of the preparations was analyzed in vitro using flow cytometry-based activity and functionality profiling of primary human lymphocytes as well as cytokine measurement using a classical ELISA technique. Experiments revealed that horsetail preparations suppress activation and proliferation of lymphocytes by an interleukin-2-dependent mechanism. The effect increased with the silica concentration in the decoctions. Lymphocytes' polyfunctionality was also influenced, shown by a downregulation of IFN-γ. Analytical profiling by HPLC-UV-MS and bioactivity testing revealed relevant immunosuppressive concentrations of a component that has been identified as isoquercitrin. Our results show that both silica and isoquercitrin are active compounds of horsetail preparations.
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Affiliation(s)
- Carmen Steinborn
- Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg
| | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Switzerland
| | - Ulrich Meyer
- Salumed-Verlag GmbH, Gemeinschaftskrankenhaus Havelhöhe, Berlin
| | | | - Sven Stadlbauer
- Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg
| | - Roman Huber
- Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg
| | - Carsten Gründemann
- Center for Complementary Medicine, Institute for Infection Prevention and Hospital Epidemiology, Faculty of Medicine, University of Freiburg
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Ramseyer J, Thuerig B, De Mieri M, Schärer HJ, Oberhänsli T, Gupta MP, Tamm L, Hamburger M, Potterat O. Correction to Eudesmane Sesquiterpenes from Verbesina lanata with Inhibitory Activity against Grapevine Downy Mildew. J Nat Prod 2018; 81:1130. [PMID: 29451791 DOI: 10.1021/acs.jnatprod.8b00140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Ramseyer J, Thuerig B, De Mieri M, Schärer HJ, Oberhänsli T, Gupta MP, Tamm L, Hamburger M, Potterat O. Eudesmane Sesquiterpenes from Verbesina lanata with Inhibitory Activity against Grapevine Downy Mildew. J Nat Prod 2017; 80:3296-3304. [PMID: 29200294 DOI: 10.1021/acs.jnatprod.7b00868] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An in-house library of more than 3000 extracts of plant and fungal origin was screened against some major plant pathogens. As one of the hits, an ethyl acetate extract from inflorescences of Verbesina lanata showed significant inhibitory activity in vitro against grapevine downy mildew (Plasmopara viticola), with a MIC100 value of 35 μg/mL. An emulsifiable concentrate formulation with 50 mg/g of the extract was developed for in vivo evaluation. A suspension of the formulation containing 1 mg/mL of extract lowered leaf surface infection of grapevine seedling by 82% compared to the nontreated control. With the aid of HPLC-based activity profiling, the antifungal activity was correlated with a series of lipophilic compounds. Preparative isolation by a combination of chromatographic techniques afforded 16 eudesmane sesquiterpenes including eight new congeners. Nine compounds were obtained in sufficient quantities to be tested in vitro and were found to inhibit the zoospore activity of P. viticola with MIC100 values ranging from 4 to 50 μg/mL. The two major compounds, 6β-cinnamoyloxy-4β,9β,15-trihydroxyeudesmane (9) and 6β-cinnamoyloxy-1β,15-dihydroxyeudesm-4-en-3-one (13), showed MIC100 values of 5 and 31 μg/mL, respectively.
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Affiliation(s)
- Justine Ramseyer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Barbara Thuerig
- Research Institute of Organic Agriculture FiBL, Department of Crop Sciences , Ackerstrasse 113, 5070 Frick, Switzerland
| | - Maria De Mieri
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Hans-Jakob Schärer
- Research Institute of Organic Agriculture FiBL, Department of Crop Sciences , Ackerstrasse 113, 5070 Frick, Switzerland
| | - Thomas Oberhänsli
- Research Institute of Organic Agriculture FiBL, Department of Crop Sciences , Ackerstrasse 113, 5070 Frick, Switzerland
| | - Mahabir P Gupta
- Center for Pharmacognostic Research on Panamanian Flora, Faculty of Pharmacy, University of Panama , Panama City, Republic of Panama
| | - Lucius Tamm
- Research Institute of Organic Agriculture FiBL, Department of Crop Sciences , Ackerstrasse 113, 5070 Frick, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel , Klingelbergstrasse 50, 4056 Basel, Switzerland
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Bachmann S, Betschart C, Gerber J, Fürer K, Mennet M, Hamburger M, Potterat O, von Mandach U, Simões-Wüst AP. Potential of Bryophyllum pinnatum as a Detrusor Relaxant: An in Vitro Exploratory Study. Planta Med 2017; 83:1274-1280. [PMID: 28437806 DOI: 10.1055/s-0043-109097] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An earlier prospective, randomised, placebo-controlled clinical trial had suggested that Bryophyllum pinnatum might have potential in the treatment of overactive bladder. Here we investigated the effects of B. pinnatum leaf press juice, fractions enriched in flavonoids and bufadienolides, and a flavonoid aglycon mixture and individual aglycons on detrusor contractility as a major target in overactive bladder treatment. The strength of the detrusor contractions was investigated using porcine muscle strips stimulated with KCl. B. pinnatum leaf press juice increased the contraction force of muscle strips. Treatment with the flavonoid-enriched fraction had almost no effect on contractility, while the bufadienolide-enriched fraction and flavonoid aglycons led to a concentration-dependent lowering of the contraction force. The data indicate that several components of B. pinnatum leaf press juice may contribute to the inhibitory effect on detrusor contractility, which in turn provides support to overactive bladder treatment with B. pinnatum.
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Affiliation(s)
- Simon Bachmann
- Department of Obstetrics, University Hospital Zurich, Switzerland
| | | | - Julia Gerber
- Division of Pharmaceutical Biology, University of Basel, Switzerland
| | - Karin Fürer
- Department of Obstetrics, University Hospital Zurich, Switzerland
| | | | | | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Switzerland
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Ramseyer J, Thuerig B, De Mieri M, Schärer HJ, Oberhänsli T, Gupta MP, Tamm L, Potterat O, Hamburger M. Eudesmane sesquiterpenes from Verbesina lanata with inhibitory activity against major agricultural pathogen. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- J Ramseyer
- Department of Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
| | - B Thuerig
- Institute of Organic Agriculture FiBL, Department of Crop Sciences, 5070 Frick, Switzerland
| | - M De Mieri
- Department of Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
| | - HJ Schärer
- Institute of Organic Agriculture FiBL, Department of Crop Sciences, 5070 Frick, Switzerland
| | - T Oberhänsli
- Institute of Organic Agriculture FiBL, Department of Crop Sciences, 5070 Frick, Switzerland
| | - MP Gupta
- Center for Pharmacognostic Research on Panamanian Flora, Faculty of Pharmacy, University of Panama, Panama, Panama
| | - L Tamm
- Institute of Organic Agriculture FiBL, Department of Crop Sciences, 5070 Frick, Switzerland
| | - O Potterat
- Department of Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
| | - M Hamburger
- Department of Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
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Corradi E, Schmidt N, Räber N, De Mieri M, Hamburger M, Butterweck V, Potterat O. Metabolite Profile and Antiproliferative Effects in HaCaT Cells of a Salix reticulata Extract. Planta Med 2017; 83:1149-1158. [PMID: 28449181 DOI: 10.1055/s-0043-109098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Phenolic constituents of Salix reticulata (Salicaceae) and antiproliferative activity of an extract and individual compounds were investigated in immortalized human non-tumorigenic keratinocytes (HaCaT). A MeOH extract from aerial parts afforded several flavonoids, including luteolin and apigenin glycosides (2-5 and 9) and catechin (1), two procyanidin fractions, and the phenolic glucosides picein (6), triandrin (7), and salicortin (8). In an adenosine triphosphate assay, the MeOH extract reduced cell viability by approximately 60 % at a concentration of 100 µg/mL. Cell proliferation was assessed with a BrdU incorporation ELISA assay. The extract inhibited proliferation of HaCaT cells in a concentration-dependent manner, with approximately 50 % inhibition at 100 µg/mL. In time-lapse assays, the extract showed distinct inhibitory effects on cell migration at concentrations of 12.5, 25, and 50 µg/mL. The activity of selected constituents was also determined. Luteolin-7-O-β-glucuronide (3) significantly inhibited cell proliferation at concentrations of 10 and 50 µM. In contrast, luteolin-7-O-β-glucopyranoside (2) and a procyanidin fraction (P1) had only weak effects, while picein (6) and salicortin (8) did not affect cell proliferation. Luteolin-7-O-β-glucuronide (10 µM) and, to a lesser extent, the procyanidin fraction (10 µg/mL) also inhibited cell migration.
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Affiliation(s)
| | - Nadine Schmidt
- Institute for Pharma Technology, School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Muttenz, Switzerland
| | - Nathalie Räber
- Division of Pharmaceutical Biology, University of Basel, Switzerland
| | - Maria De Mieri
- Division of Pharmaceutical Biology, University of Basel, Switzerland
| | | | - Veronika Butterweck
- Institute for Pharma Technology, School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Muttenz, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Switzerland
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Corradi E, Schmidt N, Räber N, De Mieri M, Hamburger M, Potterat O, Butterweck V. Metabolite profile and antiproliferative effects in HaCaT cells of a Salix reticulata extract. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- E Corradi
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - N Schmidt
- Institute for Pharma Technology, School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Muttenz, Switzerland
| | - N Räber
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - M De Mieri
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - M Hamburger
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - O Potterat
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - V Butterweck
- Institute for Pharma Technology, School of Life Sciences, University of Applied Sciences Northwestern Switzerland, Muttenz, Switzerland
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40
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Tabefam M, Moridi Farimani M, Ramseyer J, Potterat O, Hamburger M. New isoprenoids with rare scaffolds from Salvia hydrangea. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M Tabefam
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C, Evin, Tehran, Iran
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - M Moridi Farimani
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, G. C, Evin, Tehran, Iran
| | - J Ramseyer
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - O Potterat
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - M Hamburger
- Division of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
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Santos S, Haslinger C, Hamburger M, Mennet M, Potterat O, Schnelle M, Mandach U, Simões-Wüst AP. In vitro effect on myometrial contractility by a combination of Bryophyllum pinnatum juice and atosiban. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- S Santos
- Department of Obstretics, University Hospital Zürich, Zürich, Switzerland
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - C Haslinger
- Department of Obstretics, University Hospital Zürich, Zürich, Switzerland
| | - M Hamburger
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - M Mennet
- Clinical Research, Weleda AG, Arlesheim, Switzerland
| | - O Potterat
- Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - M Schnelle
- Clinical Research, Weleda AG, Arlesheim, Switzerland
| | - U Mandach
- Department of Obstretics, University Hospital Zürich, Zürich, Switzerland
| | - AP Simões-Wüst
- Department of Obstretics, University Hospital Zürich, Zürich, Switzerland
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Hamburger M, Potterat O, Fürer K, Simões-Wüst AP, von Mandach U. Bryophyllum pinnatum – Reverse Engineering of an Anthroposophic Herbal Medicine. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200847] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Bryophyllum pinnatum (syn. Kalanchoe pinnata), a plant native to Madagascar, was introduced into anthroposophic medicine in the early 20th century. In recent years, a number of investigations were conducted on the chemical composition, pharmacological properties, and clinical efficacy of Bryophyllum. Here the phytochemistry, and pharmacological and clinical data are reviewed. With respect to pharmacology, a special focus was put on properties related to the use in anthroposophic medicine as a treatment for “hyperactivity diseases”, including preterm labor, restlessness, and sleep disorders. Recent studies suggest that B. pinnatum has also potential as a treatment option in patients suffering from overactive bladder syndrome. Tolerability of Bryophyllum is addressed, and existing toxicological data are discussed in relation to bufadienolides contained in Bryophyllum. Open questions regarding the use of Bryophyllum are also discussed.
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Affiliation(s)
- Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
| | - Karin Fürer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, 4056 Basel, Switzerland
- Department of Obstetrics, University Hospital Zurich, 8091 Zurich, Switzerland
| | | | - Ursula von Mandach
- Department of Obstetrics, University Hospital Zurich, 8091 Zurich, Switzerland
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Fuchs S, Bischoff I, Willer EA, Bräutigam J, Bubik MF, Erdelmeier CAJ, Koch E, Faleschini MT, De Mieri M, Bauhart M, Zahler S, Hensel A, Hamburger M, Potterat O, Fürst R. The Dual Edema-Preventing Molecular Mechanism of the Crataegus Extract WS 1442 Can Be Assigned to Distinct Phytochemical Fractions. Planta Med 2017; 83:701-709. [PMID: 28006832 DOI: 10.1055/s-0042-123388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The hawthorn (Crataegus spp.) extract WS 1442 is used against mild forms of chronic heart failure. This disease is associated with endothelial barrier dysfunction and edema formation. We have recently shown that WS 1442 protects against this dysfunction by a dual mechanism: it both promotes endothelial barrier integrity by activation of a barrier-enhancing pathway (cortactin activation) and inhibits endothelial hyperpermeability by blocking a barrier disruptive pathway (calcium signaling). In this study, we aimed to identify the bioactive compounds responsible for these actions by using a bioactivity-guided fractionation approach. From the four fractions generated from WS 1442 by successive elution with water, 95 % ethanol, methanol, and 70 % acetone, only the water fraction was inactive, whereas the other three triggered a reduction of endothelial hyperpermeability. Analyses of intracellular calcium levels and cortactin phosphorylation were used as readouts to estimate the bioactivity of subfractions and isolated compounds. Interestingly, only the ethanolic fraction interfered with the calcium signaling, whereas only the methanolic fraction led to an activation of cortactin. Thus, the dual mode of action of WS 1442 could be clearly assigned to two distinct fractions. Although the identification of the calcium-active substance(s) was not successful, we could exclude an involvement of phenolic compounds. Cortactin activation, however, could be clearly attributed to oligomeric procyanidins with a distinct degree of polymerization. Taken together, our study provides the first approach to identify the active constituents of WS 1442 that address different cellular pathways leading to the inhibition of endothelial barrier dysfunction.
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Affiliation(s)
- Simone Fuchs
- Institute of Pharmaceutical Biology, Goethe University Frankfurt/Main
| | - Iris Bischoff
- Institute of Pharmaceutical Biology, Goethe University Frankfurt/Main
| | - Elisabeth A Willer
- Pharmaceutical Biology, Department of Pharmacy, Center for Drug Research, University of Munich
| | | | - Martin F Bubik
- Pharmaceutical Biology, Department of Pharmacy, Center for Drug Research, University of Munich
| | | | - Egon Koch
- Preclinical Research, Dr. Willmar Schwabe GmbH & Co. KG, Karlsruhe
| | - Maria T Faleschini
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Maria De Mieri
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Milena Bauhart
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Stefan Zahler
- Pharmaceutical Biology, Department of Pharmacy, Center for Drug Research, University of Munich
| | - Andreas Hensel
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Robert Fürst
- Institute of Pharmaceutical Biology, Goethe University Frankfurt/Main
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Thuerig B, Ramseyer J, Hamburger M, Oberhänsli T, Potterat O, Schärer HJ, Tamm L. Efficacy of a Juncus effusus extract on grapevine and apple plants against Plasmopara viticola and Venturia inaequalis, and identification of the major active constituent. Pest Manag Sci 2016; 72:1718-1726. [PMID: 26616740 DOI: 10.1002/ps.4199] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 11/24/2015] [Accepted: 11/25/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND There is growing demand to replace chemical pesticides with alternatives owing to concerns related to impacts on human health and the environment. Plant-derived plant protection products could provide sustainable and environmentally friendly alternatives to chemical products. The aim of this study was to identify plant and fungal extracts with so far unknown activity against important plant pathogens by in vitro screening of a library of more than 3000 extracts. RESULTS Several plant extracts with promising in vitro fungicidal activity (MIC100 ≤ 50 µg mL(-1) ) towards one or several of the investigated pathogens (Venturia ineaqualis, Phytophthora infestans, Plasmopara viticola) were identified by the screening. One of the hits, an ethyl acetate extract of Juncus effusus L. medulla, was further investigated, and dehydroeffusol (DHEF) was identified as its main active constituent. On susceptible grapevine and apple seedlings, efficacies of up to 100% were reached with the extract (EC50 123 or 156 µg mL(-1) ) and with DHEF (EC50 18 or 21 µg mL(-1) ) against P. viticola and V. inaequalis respectively. CONCLUSIONS Our results demonstrate that plants can provide promising alternatives for integrated and organic farming. J. effusus shows high efficacy at low concentrations and, as an abundant perennial species, is an interesting candidate for the development of a novel plant protection product. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Barbara Thuerig
- Research Institute of Organic Agriculture FiBL, Frick, Switzerland
| | - Justine Ramseyer
- Department of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | - Matthias Hamburger
- Department of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | | | - Olivier Potterat
- Department of Pharmaceutical Biology, University of Basel, Basel, Switzerland
| | | | - Lucius Tamm
- Research Institute of Organic Agriculture FiBL, Frick, Switzerland
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Fürer K, Simões-Wüst AP, von Mandach U, Hamburger M, Potterat O. Bryophyllum pinnatum and Related Species Used in Anthroposophic Medicine: Constituents, Pharmacological Activities, and Clinical Efficacy. Planta Med 2016; 82:930-941. [PMID: 27220081 DOI: 10.1055/s-0042-106727] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Bryophyllum pinnatum (syn. Kalanchoe pinnata) is a succulent perennial plant native to Madagascar that was introduced in anthroposophic medicine in the early 20th century. In recent years, we conducted a large collaborative project to provide reliable data on the chemical composition, pharmacological properties, and clinical efficacy of Bryophyllum. Here, we comprehensively review the phytochemistry, as well as the pharmacological and clinical data. As to the pharmacology, special emphasis is given to properties related to the use in anthroposophic medicine as a treatment for "hyperactivity diseases", such as preterm labor, restlessness, and sleep disorders. Studies suggesting that B. pinnatum may become a new treatment option for overactive bladder syndrome are also reviewed. Tolerability is addressed, and toxicological data are discussed in conjunction with the presence of potentially toxic bufadienolides in Bryophyllum species. The few data available on two related species with medicinal uses, Bryophyllum daigremontianum and Bryophyllum delagoense, have also been included. Taken together, current data support the use of B. pinnatum for the mentioned indications, but further studies are needed to fully understand the modes of action, and to identify the pharmacologically active constituents.
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Affiliation(s)
- Karin Fürer
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | | | - Ursula von Mandach
- Department of Obstetrics, University Hospital Zurich, Zurich, Switzerland
| | - Matthias Hamburger
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
| | - Olivier Potterat
- Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Basel, Switzerland
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Abstract
Fourteen secondary metabolites, including a new secoiridoid glucoside (1), were isolated from the aerial parts of Scabiosa lucida by a combination of column chromatography, preparative and semi-preparative HPLC. They were identified by extensive NMR, and ESI-MS experiments, and by comparison with literature data.
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Affiliation(s)
- Elisabetta Corradi
- University of Basel, Division of Pharmaceutical Biology, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Maria De Mieri
- University of Basel, Division of Pharmaceutical Biology, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Frank Gafner
- Mibelle Biochemistry, CH-5033 Buchs, Switzerland
| | - Matthias Hamburger
- University of Basel, Division of Pharmaceutical Biology, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
| | - Olivier Potterat
- University of Basel, Division of Pharmaceutical Biology, Klingelbergstrasse 50, CH-4056 Basel, Switzerland
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Corradi E, De Mieri M, Gafner F, Hamburger M, Potterat O. New Secoiridoid Glucoside, and a Metabolite Profile of Scabiosa lucida. Nat Prod Commun 2016; 11:887-890. [PMID: 30452154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
ourteen secondary metabolites, including a new secoiridoid glucoside (1), were isolated from the aerial parts of Scabiosa licida by a combination of column hromatography, preparative and semi-preparative HPLC. They were identified by extensive NMR, and ESI-MS experiments, and by comparison with iterature data.
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Hamburger M, Potterat O, Wolfender JL, Queiroz E. Special Issue dedicated to Prof. Dr. Dres. h. c. mult. Kurt Hostettmann. Planta Med 2016; 82:919. [PMID: 27438530 DOI: 10.1055/s-0042-108469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Herrendorff R, Faleschini MT, Stiefvater A, Erne B, Wiktorowicz T, Kern F, Hamburger M, Potterat O, Kinter J, Sinnreich M. Identification of Plant-derived Alkaloids with Therapeutic Potential for Myotonic Dystrophy Type I. J Biol Chem 2016; 291:17165-77. [PMID: 27298317 DOI: 10.1074/jbc.m115.710616] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Indexed: 11/06/2022] Open
Abstract
Myotonic dystrophy type I (DM1) is a disabling neuromuscular disease with no causal treatment available. This disease is caused by expanded CTG trinucleotide repeats in the 3' UTR of the dystrophia myotonica protein kinase gene. On the RNA level, expanded (CUG)n repeats form hairpin structures that sequester splicing factors such as muscleblind-like 1 (MBNL1). Lack of available MBNL1 leads to misregulated alternative splicing of many target pre-mRNAs, leading to the multisystemic symptoms in DM1. Many studies aiming to identify small molecules that target the (CUG)n-MBNL1 complex focused on synthetic molecules. In an effort to identify new small molecules that liberate sequestered MBNL1 from (CUG)n RNA, we focused specifically on small molecules of natural origin. Natural products remain an important source for drugs and play a significant role in providing novel leads and pharmacophores for medicinal chemistry. In a new DM1 mechanism-based biochemical assay, we screened a collection of isolated natural compounds and a library of over 2100 extracts from plants and fungal strains. HPLC-based activity profiling in combination with spectroscopic methods were used to identify the active principles in the extracts. The bioactivity of the identified compounds was investigated in a human cell model and in a mouse model of DM1. We identified several alkaloids, including the β-carboline harmine and the isoquinoline berberine, that ameliorated certain aspects of the DM1 pathology in these models. Alkaloids as a compound class may have potential for drug discovery in other RNA-mediated diseases.
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Affiliation(s)
- Ruben Herrendorff
- From the Neuromuscular Research Group, Departments of Neurology and Biomedicine, University Hospital Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland and
| | - Maria Teresa Faleschini
- the Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Adeline Stiefvater
- From the Neuromuscular Research Group, Departments of Neurology and Biomedicine, University Hospital Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland and
| | - Beat Erne
- From the Neuromuscular Research Group, Departments of Neurology and Biomedicine, University Hospital Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland and
| | - Tatiana Wiktorowicz
- From the Neuromuscular Research Group, Departments of Neurology and Biomedicine, University Hospital Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland and
| | - Frances Kern
- From the Neuromuscular Research Group, Departments of Neurology and Biomedicine, University Hospital Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland and
| | - Matthias Hamburger
- the Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Olivier Potterat
- the Division of Pharmaceutical Biology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Jochen Kinter
- From the Neuromuscular Research Group, Departments of Neurology and Biomedicine, University Hospital Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland and
| | - Michael Sinnreich
- From the Neuromuscular Research Group, Departments of Neurology and Biomedicine, University Hospital Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland and
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Corradi E, De Mieri M, Cadisch L, Abbet C, Hamburger M, Potterat O. New Acylated Flavonol Glycosides and a Phenolic Profile ofPritzelago alpina, a Forgotten Edible Alpine Plant. Chem Biodivers 2016; 13:188-97. [DOI: 10.1002/cbdv.201500353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 12/11/2015] [Indexed: 11/06/2022]
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