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Fouedjou RT, Ponou BK, Teponno RB, Melzig M, Tanaka C, Miyamoto T, Tapondjou LA. Two new triterpenoid saponins: telephiifoliosides A and B from the roots of Corrigiola litoralis subsp. telephiifolia (Pourr.) Briq. Nat Prod Res 2021; 36:4949-4956. [PMID: 33939575 DOI: 10.1080/14786419.2021.1914030] [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] [Indexed: 10/21/2022]
Abstract
The polar fraction of the MeOH extract of the roots of Corrigiola litoralis subsp. telephiifolia (Pourr.) Briq. (Caryophyllaceae) was investigated for its constituents and two previously unreported monodesmosides triterpene saponins, telephiifoliosides A and B (1 and 2), along with the known bonushenricoside A (3) were isolated. Their structures were elucidated by combined spectroscopic and spectrometric techniques (1H NMR, 13C NMR, HSQC, 1H-1H COSY, HMBC, TOCSY, NOESY, HRESIMS) and chemical methods. The structures of the new saponins were established as; 3-O-α-L-arabinopyranosyljaligonic acid (1), and 3-O-α-L-arabinopyranosylphytolaccagenin ester (2). Upon evaluation of the antiproliferative activity on human malignant epithelial (HeLa) cells, none of the isolated compounds was efficient at the concentration of 33 µM. HighlightsThis is the first phytochemical study on Corrigiola litoralis subsp. telephiifolia.Two new saponins were isolated from the roots of Corrigiola litoralis subsp. telephiifolia.The isolated compounds were tested for their antiproliferative activity.
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Affiliation(s)
- Romuald Tématio Fouedjou
- Research Unit of Environmental and Applied Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, Dschang, Cameroon.,Institut für Pharmazie (Pharmazeutische Biologie), Freie Universität Berlin, Berlin, Germany
| | - Beaudelaire Kemvoufo Ponou
- Research Unit of Environmental and Applied Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, Dschang, Cameroon.,Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Rémy Bertrand Teponno
- Research Unit of Environmental and Applied Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Matthias Melzig
- Institut für Pharmazie (Pharmazeutische Biologie), Freie Universität Berlin, Berlin, Germany
| | - Chiaki Tanaka
- Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomofumi Miyamoto
- Department of Natural Products Chemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Léon Azefack Tapondjou
- Research Unit of Environmental and Applied Chemistry, Department of Chemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
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Tresch M, Mevissen M, Ayrle H, Melzig M, Roosje P, Walkenhorst M. Medicinal plants as therapeutic options for topical treatment in canine dermatology? A systematic review. BMC Vet Res 2019; 15:174. [PMID: 31133058 PMCID: PMC6537371 DOI: 10.1186/s12917-019-1854-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 05/04/2018] [Accepted: 03/27/2019] [Indexed: 12/14/2022] Open
Abstract
Background Medicinal plants have been used traditionally since centuries for wound care and treatment of skin diseases both in human and animals. Skin diseases are one of the most common reasons for owners to take their dog to the veterinarian. The demands for treatment and prophylaxis of these diseases are broad. A wide range of bacteria including antibiotic-resistant bacteria can be involved, making the treatment challenging and bear an anthropo-zoonotic potential. The aim of this review is to systematically evaluate based on recent scientific literature, the potential of four medicinal plants to enrich the therapeutic options in pyoderma, canine atopic dermatitis, otitis externa, wounds and dermatophytosis in dogs. Results Based on four books and a survey among veterinarians specialized in phytotherapy, four medicinal plants were chosen as the subject of this systematic review: Calendula officinalis L. (Marigold), Hypericum perforatum L. agg. (St. John’s Wort), Matricaria chamomilla L. (syn. Matricaria recutita L., Chamomile) and Salvia officinalis L. (Sage). According to the PRISMA statement through literature research on two online databases a total of 8295 publications was screened and narrowed down to a final 138 publications for which full-text documents were analyzed for its content resulting in a total of 145 references (21 clinical, 24 in vivo and 100 in vitro references). Conclusions All four plants were proven to have antibacterial and antifungal effects of a rather broad spectrum including antibiotic-resistant bacteria. This makes them an interesting new option for the treatment of pyoderma, otitis externa, infected wounds and dermatophytosis. Marigold, St. John’s Wort and Chamomile showed wound-healing properties and are thus promising candidates in line to fill the therapeutic gap in canine wound-healing agents. St. John’s Wort and Chamomile also showed anti-inflammatory and other beneficial effects on healthy skin. Due to the wide range of beneficial effects of these medicinal plants, they should be taken into account for the treatment of dermatologic diseases in dogs at least in future clinical research. Electronic supplementary material The online version of this article (10.1186/s12917-019-1854-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Milena Tresch
- Division Veterinary Pharmacology & Toxicology, Department Clinical Research and Veterinary Public Health, Vetsuisse Faculty, University of Bern, Laenggassstrasse 124, 3012, Bern, Switzerland
| | - Meike Mevissen
- Division Veterinary Pharmacology & Toxicology, Department Clinical Research and Veterinary Public Health, Vetsuisse Faculty, University of Bern, Laenggassstrasse 124, 3012, Bern, Switzerland
| | - Hannah Ayrle
- Department of Livestock Sciences, Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, Postbox 219, 5070, Frick, Switzerland
| | - Matthias Melzig
- Dahlem Centre of Plant Sciences, Institute of Pharmacy, Freie Universität Berlin, Koenigin-Luise-Strasse 2+4, 14195, Berlin, Germany
| | - Petra Roosje
- Division of Clinical Dermatology, Department of Clinical Veterinary Medicine, Vetsuisse Faculty, University of Bern, Laenggassstrasse 124, 3012, Bern, Switzerland
| | - Michael Walkenhorst
- Department of Livestock Sciences, Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, Postbox 219, 5070, Frick, Switzerland.
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Walkenhorst M, Schmid K, Disler M, Bischoff T, Mayer M, Stucki K, Vogl CR, Meier B, Hamburger M, Melzig M. Therapeutic use and dosage of homemade herbal remedies of Swiss farmers in veterinary phytotherapy. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608017] [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 Walkenhorst
- Forschungsinstitut für biologischen Landbau (FiBL), Frick, Switzerland
| | - K Schmid
- Department für Pharmazeutische Wissenschaften, Universität Basel, Basel, Switzerland
| | - M Disler
- Department für Pharmazeutische Wissenschaften, Universität Basel, Basel, Switzerland
| | - T Bischoff
- Department für Pharmazeutische Wissenschaften, Universität Basel, Basel, Switzerland
| | - M Mayer
- Forschungsinstitut für biologischen Landbau (FiBL), Frick, Switzerland
| | - K Stucki
- Department für Pharmazeutische Wissenschaften, Universität Basel, Basel, Switzerland
| | - CR Vogl
- Department für Nachhaltige Agrarsysteme, Universität für Bodenkultur, Wien, Austria
| | - B Meier
- Fachgruppe Phytopharmazie und Naturstoffe, Zürcher Hochschule für Angewandte Wissenschaften, Wädenswil, Switzerland
| | - M Hamburger
- Department für Pharmazeutische Wissenschaften, Universität Basel, Basel, Switzerland
| | - M Melzig
- Institut für Pharmazie, Freie Universität Berlin, Berlin, Germany
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Sama S, Jerz G, Melzig M, Weng A. Sapofectosid – an isolated triterpenoid saponin from Saponaria officinalis L. ensures non-toxic and universal gene delivery. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608578] [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 Sama
- Department of Pharmaceutical Biology, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Straße 2 – 4, 14195 Berlin, Germany, Berlin, Germany
| | - G Jerz
- 2 Institute of Food Chemistry. Technische Universität Braunschweig, Schleinitz-Straße 20, 38106 Braunschweig, Germany, Braunschweig, Germany
| | - M Melzig
- Department of Pharmaceutical Biology, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Straße 2 – 4, 14195 Berlin, Germany, Berlin, Germany
| | - A Weng
- Department of Pharmaceutical Biology, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Straße 2 – 4, 14195 Berlin, Germany, Berlin, Germany
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Goerick C, Melzig M. Only horses in danger? Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608206] [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)
- C Goerick
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - M Melzig
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
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Xie W, Melzig M. Identification of mistletoe (Viscum album L.) miRNAs and their putative roles in medicinal applications. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608092] [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)
- W Xie
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | - M Melzig
- Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
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Ayrle H, Mevissen M, Kaske M, Nathues H, Gruetzner N, Melzig M, Walkenhorst M. Medicinal plants--prophylactic and therapeutic options for gastrointestinal and respiratory diseases in calves and piglets? A systematic review. BMC Vet Res 2016; 12:89. [PMID: 27268043 PMCID: PMC4896019 DOI: 10.1186/s12917-016-0714-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [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: 11/27/2015] [Accepted: 05/30/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Gastrointestinal and respiratory diseases in calves and piglets lead to significant economic losses in livestock husbandry. A high morbidity has been reported for diarrhea (calves ≤ 35%; piglets ≤ 50%) and for respiratory diseases (calves ≤ 80%; piglets ≤ 40%). Despite a highly diverse etiology and pathophysiology of these diseases, treatment with antimicrobials is often the first-line therapy. Multi-antimicrobial resistance in pathogens results in international accordance to strengthen the research in novel treatment options. Medicinal plants bear a potential as alternative or additional treatment. Based on the versatile effects of their plant specific multi-component-compositions, medicinal plants can potentially act as 'multi-target drugs'. Regarding the plurality of medicinal plants, the aim of this systematic review was to identify potential medicinal plant species for prevention and treatment of gastrointestinal and respiratory diseases and for modulation of the immune system and inflammation in calves and piglets. RESULTS Based on nine initial sources including standard textbooks and European ethnoveterinary studies, a total of 223 medicinal plant species related to the treatment of gastrointestinal and respiratory diseases was identified. A defined search strategy was established using the PRISMA statement to evaluate 30 medicinal plant species starting from 20'000 peer-reviewed articles published in the last 20 years (1994-2014). This strategy led to 418 references (257 in vitro, 84 in vivo and 77 clinical trials, thereof 48 clinical trials in veterinary medicine) to evaluate effects of medicinal plants and their efficacy in detail. The findings indicate that the most promising candidates for gastrointestinal diseases are Allium sativum L., Mentha x piperita L. and Salvia officinalis L.; for diseases of the respiratory tract Echinacea purpurea (L.) MOENCH, Thymus vulgaris L. and Althea officinalis L. were found most promising, and Echinacea purpurea (L.) MOENCH, Camellia sinensis (L.) KUNTZE, Glycyrrhiza glabra L. and Origanum vulgare L. were identified as best candidates for modulation of the immune system and inflammation. CONCLUSIONS Several medicinal plants bear a potential for novel treatment strategies for young livestock. There is a need for further research focused on gastrointestinal and respiratory diseases in calves and piglets, and the findings of this review provide a basis on plant selection for future studies.
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Affiliation(s)
- Hannah Ayrle
- Department of Livestock Sciences, Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, postbox 219, Frick, 5070, Switzerland. .,Division Veterinary Pharmacology & Toxicology, Department Clinical Research and Veterinary Public Health, Vetsuisse Faculty, University of Bern, Laenggassstrasse 124, Bern, 3012, Switzerland.
| | - Meike Mevissen
- Division Veterinary Pharmacology & Toxicology, Department Clinical Research and Veterinary Public Health, Vetsuisse Faculty, University of Bern, Laenggassstrasse 124, Bern, 3012, Switzerland
| | - Martin Kaske
- Department of Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich, 8057, Switzerland
| | - Heiko Nathues
- Department of Clinical Veterinary Medicine, Swine Clinic, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, Bern, 3012, Switzerland
| | - Niels Gruetzner
- Department of Clinical Veterinary Medicine, Swine Clinic, Vetsuisse Faculty, University of Bern, Bremgartenstrasse 109a, Bern, 3012, Switzerland
| | - Matthias Melzig
- Dahlem Centre of Plant Sciences, Institute of Pharmacy, Freie Universität Berlin, Koenigin-Luise-Strasse 2 + 4, Berlin, 14195, Germany
| | - Michael Walkenhorst
- Department of Livestock Sciences, Research Institute of Organic Agriculture (FiBL), Ackerstrasse 113, postbox 219, Frick, 5070, Switzerland
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von Mallinckrodt B, Thakur M, Gilabert-Oriol R, Fuchs H, Melzig M. Dianthin-EGF: a leading candidate in combination therapy with saponins in the field of colon carcinoma. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv096.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abstract
In the family of Euphorbiaceae,the genera Euphorbia and Sapium are known to contain essentially latex-bearing species. In the present study, the latex of Euphorbia selloi(Klotzsch & Garcke) Boiss., Euphorbia papillosa A.St.-Hil., and Sapium glandulosum (L.) Morong, plants native from Brazil, were examined concerning proteolytic activity. All studied species have proteins with significant proteolytic activity and E. papillosa has the greatest specific activity. Aiming to verify the type of protease present, an assay with different inhibitors was performed. In the three tested plants, the proteolytic activity was significantly inhibited by a serine protease inhibitor 4-(2-aminoethyl)-benzenesulfonyl fluoride hydrochloride (AEBSF). Using techniques of electrophoresis with polyacrylamide gels (SDS-PAGE), the subunits of proteins were separated according to their molecular masses, and the protein activity was visually detected by zymography.
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Schneider S, Mindl A, Elfmger G, Melzig M. Photochromism of spirooxazines I. Investigation of the primary processes in the ring-opening reaction by picosecond time-resolved absorption and emission spectroscopy. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.19870911126] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Schneider S, Baumann F, Klüter U, Melzig M. Photochromism of spirooxazines II. CARS-investigation of solvent effects on the isomeric distribution. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.19870911127] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Kasper J, Melzig M. HPTLC method for the quantification of isoflavones in nutritional supplements of red clover (Trifolium pratenseL.). JPC-J PLANAR CHROMAT 2011. [DOI: 10.1556/jpc.24.2011.5.2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Vogel J, Knoth G, Melzig M, Cmiel E, Schneider S, Dörr F. 2-(2-Pyridinyl)-1-(3-Pyridinyl)-Ethanone - Photoinduced Proton Transfer and Isomerisation. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19830870507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Melzig M, Schneider S, Dörr F, Daltrozzo E. 2-(2-Pyridinyl)-1-(3-Pyridinyl)-Ethanone - Structure and Spectroscopic Properties. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19800841105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Fuchs H, Bachran D, Panjideh H, Schellmann N, Weng A, Melzig M, Sutherland M, Bachran C. Saponins as Tool for Improved Targeted Tumor Therapies. Curr Drug Targets 2009; 10:140-51. [DOI: 10.2174/138945009787354584] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Scheller A, Wiesner B, Melzig M, Bienert M, Oehlke J. Evidence for an amphipathicity independent cellular uptake of amphipathic cell-penetrating peptides. Eur J Biochem 2000; 267:6043-50. [PMID: 10998065 DOI: 10.1046/j.1432-1327.2000.01681.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The cellular uptake of a peptide set derived from membrane-permeable alpha-helical amphipathic peptides by stepwise alterations of structure forming propensity and charge was studied by confocal laser scanning microscopy (CLSM) combined with HPLC. For CLSM monitoring, an online protocol was employed that avoided bias of the uptake results by washout. Using this protocol, extensive fluorescence, approaching the intensity of the external peptide, was observed in the cytosol and nucleus within minutes in all cases, irrespective of the degree of amphipathicity. HPLC analyses of the cell lysates revealed the unmetabolized peptides to be the predominant source of the intracellular fluorescence. Significant amphipathicity-dependent differences became apparent only after washing the peptide-loaded cells, reflecting the effects of amphipathicity on resistance to wash out. Exposure of the cells to the peptides at 37 and 0 degrees C led to similar results, indicating the nonendocytic character of the uptake. With a view to practical applications, the results of the present study open the possibility of exploiting nonamphipathic peptides as vectors for translocating polar compounds into the cell interior, which would circumvent substantial obstacles currently connected with the use of amphipathic vector peptides, such as membrane toxicity and low solubility. Moreover, differences in the uptake of several members of the investigated peptide series into different cell types present a promising basis for the design of cell-type specific vector peptides.
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Affiliation(s)
- A Scheller
- Institute of Molecular Pharmacology, Berlin, Germany
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Abstract
The structure of the cell-permeable alpha-helical amphipathic model peptide FLUOS-KLALKLALKALKAALKLA-NH2 (I) was modified stepwise with respect to its helix parameters hydrophobicity, hydrophobic moment and hydrophilic face as well as molecular size and charge. Cellular uptake and membrane destabilizing activity of the resulting peptides were studied using aortic endothelial cells and HPLC combined with CLSM. With the exceptions that a reduction of molecule size below 16 amino acid residues and the introduction of a negative net charge abolished uptake, none of the investigated structural parameters proved to be essential for the passage of these peptides across the plasma membrane. Membrane toxicity also showed no correlation to any of the parameters investigated and could be detected only at concentrations higher than 2 microM. These results implicate helical amphipathicity as the only essential structural requirement for the entry of such peptides into the cell interior, in accord with earlier studies. The pivotal role of helical amphipathicity was confirmed by uptake results obtained with two further pairs of amphipathic/non-amphipathic 18-mer peptides with different primary structure, net charge and helix parameters from I. The amphipathic counterparts were internalized into the cells to a comparable extent as I, whereas no cellular uptake could be detected for the non-amphipathic analogues. The mode of uptake remains unclear and involves both temperature-sensitive and -insensitive processes, indicating non-endocytic contributions.
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Affiliation(s)
- A Scheller
- Institute of Molecular Pharmacology, Berlin, Germany
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Oehlke J, Scheller A, Wiesner B, Krause E, Beyermann M, Klauschenz E, Melzig M, Bienert M. Cellular uptake of an alpha-helical amphipathic model peptide with the potential to deliver polar compounds into the cell interior non-endocytically. Biochim Biophys Acta 1998; 1414:127-39. [PMID: 9804921 DOI: 10.1016/s0005-2736(98)00161-8] [Citation(s) in RCA: 316] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Evidence that multiple, probably non-endocytic mechanisms are involved in the uptake into mammalian cells of the alpha-helical amphipathic model peptide FLUOS-KLALKLALKALKAALKLA-NH2 (I) is presented. Extensive cellular uptake of N-terminally GC-elongated derivatives of I, conjugated by disufide bridges to differently charged peptides, indicated that I-like model peptides might serve as vectors for intracellular delivery of polar bioactive compounds. The mode of the cellular internalization of I comprising energy-, temperature-, pH- and ion-dependent as well as -independent processes suggests analogy to that displayed by small unstructured peptides reported previously (Oehlke et al., Biochim. Biophys. Acta 1330 (1997) 50-60). The uptake behavior of I also showed analogy to that of several protein-derived helical peptide sequences, recently found to be capable of efficiently carrying tagged oligonucleotides and peptides directly into the cytosol of mammalian cells (Derossi et al., J. Biol. Chem. 269 (1994) 10444-10450; Lin et al., J. Biol. Chem. 270 (1995) 14255-14258; Fawell et al., Proc. Natl. Acad. Sci. USA 91 (1994) 664-668; Chaloin et al., Biochemistry 36 (1997) 11179-11187; Vives et al., J. Biol. Chem., 272 (1997) 16010-16017).
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Affiliation(s)
- J Oehlke
- Institute of Molecular Pharmacology, Alfred-Kowalke-Str. 4, D-10315 Berlin, Germany.
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Melzig M, Bormann H, Heder G, Siems WE, Hostettmann K. Inhibition of neutral metalloendopeptidase and angiotensin-converting enzyme by selected naturally occurring chromone derivatives. Pharmazie 1998; 53:804-5. [PMID: 9853362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- M Melzig
- Institute of Pharmacy, Humboldt University, Berlin, Germany
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Oehlke J, Beyermann M, Wiesner B, Melzig M, Berger H, Krause E, Bienert M. Evidence for extensive and non-specific translocation of oligopeptides across plasma membranes of mammalian cells. Biochim Biophys Acta 1997; 1330:50-60. [PMID: 9375812 DOI: 10.1016/s0005-2736(97)00141-7] [Citation(s) in RCA: 14] [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: 02/05/2023]
Abstract
After exposure of bovine aortic endothelial cells to various small peptides (tetra- to undeca-mer), extensive transport of the peptides across the plasma membrane was observed in the concentration range 10(-7) to 10(-2) M. The observed transport events, which contradict the generally anticipated poor permeability of peptides across plasma membranes, exhibited high complexity and showed no saturability up to a concentration of 10(-2) M. Evidence was found for the involvement of mdrp-like transporters as well as of energy-independent facilitated diffusion events. The peptide levels within the cells approximated those of the incubation solution within 30 min, indicating high capacity and velocity for the involved transport processes. Correspondingly, preloaded cells exported about 80% of the internalized peptide within 5 min at 37 degrees C. Analogous results were found after peptide exposure to several other mammalian cell types, indicating a more general importance of the transport phenomena described here. Our findings contradict the prevailing opinion that the often observed lack of activity of externally administered peptides against their targets within intact cells is accounted for primarily by poor cellular uptake and point to export processes counteracting the uptake to be more important in this context.
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Affiliation(s)
- J Oehlke
- Institute of Molecular Pharmacology, Berlin, Germany.
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Bakalkin G, Yakovleva T, Melzig M, Terenius L. Long-term morphine treatment increases Ku protein DNA end-binding activity. Neuroreport 1997; 8:2143-8. [PMID: 9243600] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Human neuroblastoma SH-SY5Y and small-cell lung carcinoma U1690 cells of neuroendocrine origin were exposed to morphine for 1 h, 3 h or 5 days. These treatments did not alter activities of AP-1, NF-kappa B and YY1 transcription factors in SH-SY5Y cells or NF-kappa B and YY1 in U1690 cells. Five-day morphine treatment, however, caused a twofold increase in the activity of a sequence-non-specific, spermidine-activated DNA-binding factor in U1690 cells. The morphine effect was prevented by the antagonist naloxone. The DNA-binding factor bound preferentially to double-stranded DNA ends. This fact and data on subunit composition, molecular masses of subunits, and supershift/inhibition by specific antibodies in a band shift assay, show the spermidine-activated factor to be identical with the Ku protein, the DNA-binding subunit of DNA-dependent protein kinase. The effect observed may be one of the mechanisms through which opioids influence gene regulation.
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Affiliation(s)
- G Bakalkin
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
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Wilhelm F, Melzig M, Görscher T, Franke G. [Differential value of various vital stains of corneal endothelium]. Ophthalmologe 1995; 92:496-8. [PMID: 7549335] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Specular microscopy shows the integrity of the endothelial cell pattern, and vital staining methods allow the evaluation of endothelial viability. Dyes commonly used such as trypan blue enter the cells passively through the disturbed membrane. The uptake of fluorescein diacetate (FDA) is an active process. To compare the efficiency of the two methods we performed double stainings and examined the results. Pig cornea endothelium was stained by both trypan blue and FDA and vital and non-vital cells were compared. More non-vital cells were stained by FDA than by trypan blue, indicating that cells with membranes that are not permeable by trypan blue cannot metabolize FDA. This fact is important where estimating the endothelial viability of donor corneas.
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23
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Putscher I, Haber H, Fickel J, Winkler A, Melzig M. P173 effects of tetrahydroisoquinolines on the POMC gene expression in anterior pituitary tumor cells. Eur J Pharm Sci 1994. [DOI: 10.1016/0928-0987(94)90346-8] [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: 11/17/2022]
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24
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Fickel J, Savoly S, Vogel U, Furkert J, Melzig M. The proopiomelanocortin (POMC) gene expression of AtT20 mouse pituitary cells is dependent on cell culture conditions. Cell Mol Biol (Noisy-le-grand) 1994; 40:201-9. [PMID: 8003951] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We have compared the properties of AtT20 cells cultivated in a Dulbecco's modified Eagles medium containing 10% fetal calf serum (FCS) and of AtT20 cells adapted to a chemically better defined medium with transferrin, albumin, insulin, sodium selenit and 0.2% FCS. Our interest was focused on the hypothalamo-pituitary-adrenal axis (HPA) involved adrenocorticotropic hormone (ACTH) and the potent opioid peptide beta-endorphin (beta-END). There were no differences in basal secretion of ACTH and beta-END by cells cultivated in medium containing 10% or 0.2% serum, respectively. In combination to the decreased proliferation activity of AtT20 cells, grown in the serum-reduced medium we found a strongly enhanced ACTH secretion activity stimulated by the corticotropin releasing hormone (CRH) in contrast to normally cultivated AtT20 cells (10% serum). In addition, the proopiomelanocortin (POMC) gene expression was significantly down regulated in serum-reduced medium and was normalized again after further cultivation in a 10% serum containing medium. This leads to the conclusion that under standard conditions (10% serum) the gene transcription is increased by hitherto uncharacterized modulators present in the serum. The unexpected unchanged amounts of ACTH and beta-End could be the result of increased protein convertases activities. These enzymes are responsible for the POMC precursor processing into beta-End and ACTH.
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Affiliation(s)
- J Fickel
- Research Institute of Molecular Pharmacology, Res. Group Cell. and Biochem. Pharmacology, Berlin, FRG
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25
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Wilhelm F, Melzig M, Franke G. [Duration of fluorescein diacetate in corneal endothelium]. Ophthalmologe 1993; 90:171-3. [PMID: 8490301] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Fluorescein diacetate (FDA) is a suitable substance for vital staining of corneal endothelium. Uptake and metabolism is an active process. This means that a fluorescing cell must be functionally intact. The duration of endothelial fluorescence is limited and should be tested in an experimental study. Cultured endothelial cells (calf aorta endothelial cells) were stained by FDA and the loss of fluorescence time registered. We tested corneal buttons in the same way. The cultured endothelial cells showed no fluorescence after 2 h and the corneal buttons after 40-50 min. The fluorescence of FDA-stained endothelial cells decreases both in cultured cells and in whole corneal buttons, but this is not a sign of loss of endothelial viability. This fact must be taken into consideration when interpreting the results of FDA staining.
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26
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Melzig M, Paun I. Modulation of adenosine deaminase activity of endothelial cells by steroids. Pharmazie 1992; 47:394. [PMID: 1409837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- M Melzig
- Research Institute for Molecular Pharmacology, Berlin
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27
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Heder G, Melzig M, Siems WE. [Tyrosine splitting aminopeptidases on cultivated anterior hypophyseal and vascular endothelial cells]. Pharmazie 1992; 47:226-8. [PMID: 1615031] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Activities of aminopeptidases for a tyrosine peptide hydrolysis were characterized with Tyrosyl-7-amino-4-methyl-coumarin as substrate on in vitro cultivated anterior pituitary cells, respectively, on aortic endothelial cells. Furthermore the corresponding activities were measured in different fractions of the cells. The activities of the enzymes in soluble fractions of the cell homogenates are comparable with aminopeptidases of cytosolic compartments of other tissue samples. On the other hand remarkable differences exist between Km- and IC50-values of the membrane preparations of both cell types. Furthermore, the substrate degradation on intact cells by provable membrane bound ectoenzymes is identically for both cell types and this degradation is insensitive for amastatin. Our results are discussed with special respect for the importance of the degradation of biological active peptides with N-terminal tyrosine by aminopeptidases on their physiological targets.
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Affiliation(s)
- G Heder
- Institut für Wirkstofforschung, Berlin-Friedrichsfelde
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28
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Haber H, Melzig M. [Tetrahydroisoquinolines--endogenous products from chronic alcohol abuse]. Pharmazie 1992; 47:3-7. [PMID: 1608981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- H Haber
- Institut für Wirkstofforschung Berlin
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29
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Melzig M. [Properties of adenosine deaminase from cultured endothelial cells]. Pharmazie 1991; 46:802-4. [PMID: 1811232] [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] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cultivated calf aortic endothelial cells (line BZEz-7) show a remarkable activity of adenosine deaminase with a Vmax of 1.8 pmol/cell.min-1. The kM is about 160 mumol. The localization of the enzyme was determined intracellularly. The ADA is only of minor importance for the regulation of the adenosine uptake of endothelial cells. Their significance for the control of the immune system is discussed.
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Affiliation(s)
- M Melzig
- Institut für Wirkstofforschung, Berlin
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30
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Melzig M, Möller U. Effect of adenosine analogs on oxygen consumption of endothelial cells. Pharmazie 1991; 46:678. [PMID: 1798738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- M Melzig
- Institute of Drug Research Berlin
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31
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Melzig M. Influence of selected neurodepressing drugs on adenosine uptake and adenosine metabolism of endothelial cells. Pharmazie 1991; 46:610-1. [PMID: 1798721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- M Melzig
- Institute of Drug Research Berlin
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32
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Melzig M, Scherke B. Effect of metabolites from linoleic acid on migratory behaviour of endothelial cells. Pharmazie 1991; 46:299. [PMID: 1886923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- M Melzig
- Institute of Drug Research, Berlin
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33
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Melzig M. [Does vascular endothelium have different transport systems for adenosine and inosine?]. Pharmazie 1991; 46:230-1. [PMID: 1881951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- M Melzig
- Institut für Wirkstofforschung, Berlin
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34
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Melzig M, Möller U. [The action of trypsin and zymosan on the respiration of cultivated endothelial cells]. Pharmazie 1991; 46:46-8. [PMID: 1857731] [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] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Trypsin and Zymosan induce an increase in respiration activity of cultivated endothelial cells. These effects are not due to the production of oxygen radicals. The effect of trypsin will be explained by interfering with the cellular homeostasis of calcium. The stimulated respiration after incubation with zymosan may be connected with the increased phagocytosis.
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35
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Melzig M. [The effect of purine nucleosides on the 3H-adenosine uptake in cultured endothelial cells]. Pharmazie 1990; 45:869-70. [PMID: 2100345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- M Melzig
- Institut für Wirkstofforschung, Berlin
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36
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Melzig M, Dienwiebel U. [Is the estimation of the activity of MTT-reduction suitable for the determination of basal cytotoxicity?]. Pharmazie 1990; 45:515-7. [PMID: 2236195] [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] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The influence of 19 substances on the reduction of thiazolyl-blue (MTT) by cultivated calf aortic endothelial cells was studied. The substances tested could be classified into three groups. The first one includes drugs without significant effect on the reduction of MTT, the second one inhibits these reaction only weakly (less than 50%) and 10 substances of the third group showed an inhibition rate greater than 50%. There is no statistical reliability in the correlation between the IC50-values of the substances studied in the MTT-test and their LD50-values (mouse, per os). The MTT-test does not permit the estimation of the basal cytotoxicity but only the inhibition of the activity of succinate dehydrogenase and the cytochrome c/c1-complex of the respiration chain of cultivated endothelial cells.
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Affiliation(s)
- M Melzig
- Fachbereich Pharmazie der Ernst-Moritz-Arndt-Universität Greifswald
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37
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Wilhelm F, Melzig M, Franke G. Vital staining by fluorescein diacetate (FDA). A method for the estimation of corneal endothelium. Acta Ophthalmol 1990; 68:94-6. [PMID: 1692441 DOI: 10.1111/j.1755-3768.1990.tb01657.x] [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] [Indexed: 12/28/2022]
Abstract
The success of keratoplasty depends on the integrity of the graft's endothelial cell layer. We perform a staining method for testing the vitality which is practicable, safe, fast and inexpensive.
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Affiliation(s)
- F Wilhelm
- Department of Ophthalmology, Ernst-Moritz-Arndt-University, Greifswald, GDR
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38
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Melzig M, Morgenstern O, Teuscher E, Richter P. [Synthesis and biological activity of 5-phenyl-1,3,4-benzotriazepines. 20. Biological activity of 2-alkylamino- and 2-thioxo-1,3,4-benzotriazepines in aortic endothelial cells]. Pharmazie 1989; 44:731-2. [PMID: 2616622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- M Melzig
- Sektion Pharmazie, Ernst-Moritz-Arndt-Universität Greifswald
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39
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Melzig M, Teuscher E. [The effect of vasoactive drugs on the uptake of adenosine by endothelial cells]. Pharmazie 1988; 43:549-50. [PMID: 3237746] [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] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Eight drugs with vasodilatory effect of 32 vasoactive substances tested induce a significant inhibition of uptake of 3H-adenosine by cultivated calf aortic endothelial cells. These results are discussed as potentiation of the vasodilation activity of the drugs by adenosine.
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Affiliation(s)
- M Melzig
- Sektion Pharmazie der Ernst-Moritz-Arndt Universität Greifswald
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40
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Melzig M, Teuscher E. [Do endothelial cells participate in the biotransformation of cyclophosphamide?]. Pharmazie 1987; 42:844-5. [PMID: 3444848] [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] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Investigations with cyclophosphamide were done to answer the question of participation of the endothelium in biotransformation of xenobiotics. Cyclophosphamide inhibits the proliferation of cultivated endothelial cells only in high concentrations. Also after induction of the cells by phenobarbital or 2,5-diphenoxazole no increased toxicity of cyclophosphamide was observed. Though the endothelium disposes of cytochrome-P-450-dependent aryl-4-monooxygenases it does not take part in biotransformation of cyclophosphamide apparently. Further possibilities of biotransformation by endothelial cells will be discussed.
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Affiliation(s)
- M Melzig
- Sektion Pharmazie, Ernst-Moritz-Arndt-Universität Greifswald
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41
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Melzig M, Teuscher E. [The effect of heparin on the relative myosin content of cultured smooth muscle cells of the pig aorta]. Pharmazie 1986; 41:724-6. [PMID: 3823117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Heparin inhibits the proliferation of aortic smooth muscle cells cultured in serum containing culture medium and leads to an increase of their relative myosin content. Using plasma as medium supplement the effect of heparin is not observed. Thrombin is able to inhibit the increase of myosin content caused by heparin. Platelet mitogens are not the point of attack of heparin. The possible mechanism of action of heparin on smooth muscle cells will be discussed.
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42
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Melzig M, Teuscher E. [The effect of psychosedatives on adenosine uptake in cultivated endothelial cells]. Pharmazie 1986; 41:604. [PMID: 3786391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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43
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Melzig M, Michalski H, Teuscher E. [Arylesterase activity of cultured calf aorta endothelial cells]. Pharmazie 1986; 41:520. [PMID: 3774869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Melzig M, Teuscher E, Miethchen R. Untersuchungen zur Langzeitkultivierung von K#x00E4;lberaortenendothelzellen Nachweis der Bildung des Faktor-VIII-Antigens. Acta Histochem 1986. [DOI: 10.1016/s0065-1281(86)80015-0] [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: 11/26/2022]
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46
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Melzig M, Teuscher E, Richter P. [The influence of 4-amidinophenylpyruvic acid on aorta muscle cells in primary culture]. Pharmazie 1986; 41:67. [PMID: 3960958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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47
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Woolfe G, Melzig M, Schneider S, Dörr F. The role of tautomeric and rotameric species in the photophysics of 2-(2′-hydroxyphenyl)benzoxazole. Chem Phys 1983. [DOI: 10.1016/0301-0104(83)85078-2] [Citation(s) in RCA: 139] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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48
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