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Paraskevopoulos G, Fandrei F, Kumar Pratihast A, Paraskevopoulou A, Panoutsopoulou E, Opálka L, Singh Mithu V, Huster D, Vávrová K. Effects of imidazolium ionic liquids on skin barrier lipids - Perspectives for drug delivery. J Colloid Interface Sci 2024; 659:449-462. [PMID: 38183811 DOI: 10.1016/j.jcis.2023.12.139] [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: 06/30/2023] [Revised: 11/27/2023] [Accepted: 12/20/2023] [Indexed: 01/08/2024]
Abstract
Ionic liquids (ILs) have great potential to facilitate transdermal and topical drug delivery. Here, we investigated the mechanism of action of amphiphilic ILs 1-methyl-3-octylimidazolium bromide (C8MIM) and 3-dodecyl-1-methylimidazolium bromide (C12MIM) in skin barrier lipid models in comparison to their complex effects in human skin. C8MIM incorporated in a skin lipid model was a better permeation enhancer than C12MIM for water and model drugs, theophylline and diclofenac. Solid state 2H NMR and X-ray diffraction indicated that both ILs prefer the cholesterol-rich regions in skin lipids without significantly perturbing their lamellar arrangement and that C8MIM induces the formation of an isotropic lipid phase to a greater extent compared to C12MIM. C12MIM applied topically to the lipid model or human skin as a pretreatment was more potent than C8MIM. When co-applied with the drugs to human skin, aqueous C12MIM was more potent than C8MIM in enhancing theophylline permeation, but neither IL affected (even decreased) diclofenac permeation. Thus, the IL's ability to permeabilize skin lipid barrier is strongly modulated by its ability to reach the site of action and its interactions with drug and solvent. Such an interplay is far from trivial and requires detailed investigation to realize the full potential of ILs.
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Affiliation(s)
- Georgios Paraskevopoulos
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Ferdinand Fandrei
- Institute of Medical Physics and Biophysics, University of Leipzig, Härtelstr. 16-18, 04275 Leipzig, Germany
| | - Ajit Kumar Pratihast
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Anna Paraskevopoulou
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Eleni Panoutsopoulou
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Lukáš Opálka
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Venus Singh Mithu
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, India
| | - Daniel Huster
- Institute of Medical Physics and Biophysics, University of Leipzig, Härtelstr. 16-18, 04275 Leipzig, Germany
| | - Kateřina Vávrová
- Skin Barrier Research Group, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
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Sun B, Paraskevopoulos G, Min J, Rossdeutcher R, Ghosh S, Quinn B, Lin M, Sarkar D, Sukumaran D, Wang Y, Vávrová K, Lovell JF, Zhang Y. Topical Drug Delivery of Concentrated Cabazitaxel in an α-Tocopherol and DMSO Solution. Adv Sci (Weinh) 2023; 10:e2302658. [PMID: 37555802 PMCID: PMC10582425 DOI: 10.1002/advs.202302658] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 07/03/2023] [Indexed: 08/10/2023]
Abstract
Topical chemotherapy approaches are relevant for certain skin cancer treatments. This study observes that cabazitaxel (CTX), a broad-spectrum second-generation taxane cytotoxic agent, can be dissolved in α-tocopherol at high concentrations exceeding 100 mg mL-1 . 2D nuclear magnetic resonance (NMR) analysis and molecular dynamics (MD) are used to study this phenomenon. The addition of 30% dimethyl sulfoxide (DMSO) to the α-tocopherol/CTX solution improves its working viscosity and enhances CTX permeation through human skin in vitro (over 5 µg cm-2 within 24 h), while no detectable drug permeates when CTX is dissolved in α-tocopherol alone. In a transepidermal water loss assay, the barrier impairment induced by CTX in 30% DMSO in α-tocopherol, but not in pure DMSO, is reversible 8 h after the formulation removal from the skin surface. Antitumor efficacy of the topical CTX formulation is evaluated in nude mice bearing A431 human squamous carcinoma skin cancer xenografts. With topical application of concentrated CTX solutions (75 mg mL-1 ), tumor growth is significantly suppressed compared to lower concentration groups (0, 25, or 50 mg mL-1 CTX). Taken together, these findings show that topical delivery of CTX using a DMSO and α-tocopherol solvent warrants further study as a treatment for skin malignancies.
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Affiliation(s)
- Boyang Sun
- School of Chemical Engineering and TechnologyKey Laboratory of Systems Bioengineering (Ministry of Education)Frontiers Science Center for Synthetic Biology (Ministry of Education)State Key Laboratory of Chemical EngineeringTianjin UniversityTianjin300350P. R. China
| | - Georgios Paraskevopoulos
- Skin Barrier Research GroupFaculty of PharmacyCharles UniversityAkademika Heyrovského 1203Hradec Králové50005Czech Republic
| | - Jiwei Min
- School of Chemical Engineering and TechnologyKey Laboratory of Systems Bioengineering (Ministry of Education)Frontiers Science Center for Synthetic Biology (Ministry of Education)State Key Laboratory of Chemical EngineeringTianjin UniversityTianjin300350P. R. China
| | - Robert Rossdeutcher
- Department of ChemistryState University of New York at BuffaloBuffaloNY14260USA
| | - Sanjana Ghosh
- Department of Biomedical EngineeringState University of New York at BuffaloBuffaloNY14260USA
| | - Breandan Quinn
- Department of Biomedical EngineeringState University of New York at BuffaloBuffaloNY14260USA
| | - Meng‐Hsuan Lin
- Department of Biomedical EngineeringState University of New York at BuffaloBuffaloNY14260USA
| | - Debanjan Sarkar
- Department of Biomedical EngineeringState University of New York at BuffaloBuffaloNY14260USA
| | - Dinesh Sukumaran
- Department of ChemistryState University of New York at BuffaloBuffaloNY14260USA
| | - Yuefei Wang
- School of Chemical Engineering and TechnologyKey Laboratory of Systems Bioengineering (Ministry of Education)Frontiers Science Center for Synthetic Biology (Ministry of Education)State Key Laboratory of Chemical EngineeringTianjin UniversityTianjin300350P. R. China
| | - Kateřina Vávrová
- Skin Barrier Research GroupFaculty of PharmacyCharles UniversityAkademika Heyrovského 1203Hradec Králové50005Czech Republic
| | - Jonathan F. Lovell
- Department of Biomedical EngineeringState University of New York at BuffaloBuffaloNY14260USA
| | - Yumiao Zhang
- School of Chemical Engineering and TechnologyKey Laboratory of Systems Bioengineering (Ministry of Education)Frontiers Science Center for Synthetic Biology (Ministry of Education)State Key Laboratory of Chemical EngineeringTianjin UniversityTianjin300350P. R. China
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Panoutsopoulou E, Zbytovská J, Vávrová K, Paraskevopoulos G. Phospholipid-Based Microemulsions for Cutaneous Imiquimod Delivery. Pharmaceuticals (Basel) 2022; 15:ph15050515. [PMID: 35631342 PMCID: PMC9147306 DOI: 10.3390/ph15050515] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 12/07/2022] Open
Abstract
Imiquimod (IMQ) is a potent immune response modifier with antiviral and antitumor properties. IMQ’s low aqueous solubility and unsatisfactory cutaneous permeability limit its formulation into effective dosage forms. This work aimed to develop IMQ-loaded microemulsions (MEs) based on phospholipids and oleic acid to improve IMQ penetration into the epidermis. A pseudo-ternary phase diagram was constructed, and the microstructure of the formulations was examined by measuring the conductivity values. Selected MEs were characterized and studied for their ability to deliver IMQ into and through ex vivo human skin. ME1 with 1% IMQ (bicontinuous ME with Bingham rheology) delivered similar IMQ quantities to the human epidermis ex vivo as the commercial product while having a 5-fold lower IMQ dose. IMQ was not detected in the acceptor phase after the permeation experiment, suggesting a lower systemic absorption risk than the established product. Infrared spectroscopy of the stratum corneum revealed less ordered and less tightly packed lipids after ME1 application. The ME1-induced barrier disruption recovered within less than 5 h after the formulation removal, as detected by transepidermal water loss measurements. In conclusion, our findings demonstrate that phospholipid and oleic acid-based MEs could become a promising alternative for topical IMQ administration.
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Affiliation(s)
- Eleni Panoutsopoulou
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (E.P.); (K.V.)
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic;
| | - Jarmila Zbytovská
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic;
- Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic
| | - Kateřina Vávrová
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (E.P.); (K.V.)
| | - Georgios Paraskevopoulos
- Skin Barrier Research Group, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (E.P.); (K.V.)
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 50005 Hradec Králové, Czech Republic;
- Correspondence:
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Sagrafena I, Paraskevopoulos G, Pullmannová P, Opálka L, Nováčková A, Lourantou O, Vávrová K. Assembly of Human Stratum Corneum Lipids In Vitro: Fluidity Matters. J Invest Dermatol 2021; 142:2036-2039.e3. [PMID: 34942198 DOI: 10.1016/j.jid.2021.12.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/23/2021] [Accepted: 12/06/2021] [Indexed: 11/25/2022]
Affiliation(s)
- Irene Sagrafena
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Georgios Paraskevopoulos
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Petra Pullmannová
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Lukáš Opálka
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Anna Nováčková
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Ourania Lourantou
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Kateřina Vávrová
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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Nováčková A, Sagrafena I, Pullmannová P, Paraskevopoulos G, Dwivedi A, Mazumder A, Růžičková K, Slepička P, Zbytovská J, Vávrová K. Acidic pH Is Required for the Multilamellar Assembly of Skin Barrier Lipids In Vitro. J Invest Dermatol 2021; 141:1915-1921.e4. [PMID: 33675786 DOI: 10.1016/j.jid.2021.02.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 11/18/2020] [Revised: 02/18/2021] [Accepted: 02/23/2021] [Indexed: 11/19/2022]
Abstract
Lipid membrane remodeling belongs to the most fundamental processes in the body. The skin barrier lipids, which are ceramide dominant and highly rigid, must attain an unusual multilamellar nanostructure with long periodicity to restrict water loss and prevent the entry of potentially harmful environmental factors. Our data suggest that the skin acid mantle, apart from regulating enzyme activities and keeping away pathogens, may also be a prerequisite for the multilamellar assembly of the skin barrier lipids. Atomic force microscopy on monolayers composed of synthetic or human stratum corneum lipids showed multilayer formation (approximately 10-nm step height) in an acidic but not in a neutral environment. X-ray diffraction, Fourier transform infrared spectroscopy, and permeability studies showed markedly altered lipid nanostructure and increased water loss at neutral pH compared with that at acidic pH. These findings are consistent with the data on the altered organization of skin lipids and increased transepidermal water loss under conditions such as inadequate skin acidification, for example, in neonates, the elderly, and patients with atopic dermatitis.
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Affiliation(s)
- Anna Nováčková
- Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Irene Sagrafena
- Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Petra Pullmannová
- Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | | | - Anupma Dwivedi
- Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Anisha Mazumder
- Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Karolína Růžičková
- Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic
| | - Petr Slepička
- Faculty of Chemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Jarmila Zbytovská
- Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic; Faculty of Chemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Kateřina Vávrová
- Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic.
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Affiliation(s)
- Sara Monteiro
- Institute of Organic Chemistry and TechnologyFaculty of Chemical TechnologyUniversity of Pardubice Studentská 95 532 10 Pardubice Czech Republic
| | - Georgios Paraskevopoulos
- Skin Barrier Research GroupFaculty of Pharmacy in Hradec KrálovéCharles University Akademika Heyrovského 1203/8 500 05 Hradec Králové Czech Republic
| | - Aleš Imramovský
- Institute of Organic Chemistry and TechnologyFaculty of Chemical TechnologyUniversity of Pardubice Studentská 95 532 10 Pardubice Czech Republic
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Kopečná M, Macháček M, Nováčková A, Paraskevopoulos G, Roh J, Vávrová K. Esters of terpene alcohols as highly potent, reversible, and low toxic skin penetration enhancers. Sci Rep 2019; 9:14617. [PMID: 31601936 PMCID: PMC6787078 DOI: 10.1038/s41598-019-51226-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 09/26/2019] [Indexed: 12/02/2022] Open
Abstract
Skin penetration/permeation enhancers are compounds that improve (trans)dermal drug delivery. We designed hybrid terpene-amino acid enhancers by conjugating natural terpenes (citronellol, geraniol, nerol, farnesol, linalool, perillyl alcohol, menthol, borneol, carveol) or cinnamyl alcohol with 6-(dimethylamino)hexanoic acid through a biodegradable ester linker. The compounds were screened for their ability to increase the delivery of theophylline and hydrocortisone through and into human skin ex vivo. The citronellyl, bornyl and cinnamyl esters showed exceptional permeation-enhancing properties (enhancement ratios up to 82) while having low cellular toxicities. The barrier function of enhancer-treated skin (assessed by transepidermal water loss and electrical impedance) recovered within 24 h. Infrared spectroscopy suggested that these esters fluidized the stratum corneum lipids. Furthermore, the citronellyl ester increased the epidermal concentration of topically applied cidofovir, which is a potent antiviral and anticancer drug, by 15-fold. In conclusion, citronellyl 6-(dimethylamino)hexanoate is an outstanding enhancer with an advantageous combination of properties, which may improve the delivery of drugs that have a limited ability to cross biological barriers.
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Affiliation(s)
- Monika Kopečná
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 50005, Hradec Králové, Czech Republic
| | - Miloslav Macháček
- Department of Biochemical Sciences, Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 50005, Hradec Králové, Czech Republic
| | - Anna Nováčková
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 50005, Hradec Králové, Czech Republic
| | - Georgios Paraskevopoulos
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 50005, Hradec Králové, Czech Republic
| | - Jaroslav Roh
- Department of Organic and Bioorganic Chemistry, Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 50005, Hradec Králové, Czech Republic
| | - Kateřina Vávrová
- Skin Barrier Research Group, Charles University, Faculty of Pharmacy in Hradec Králové, Akademika Heyrovského 1203, 50005, Hradec Králové, Czech Republic.
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Pitsios C, Tsoumani M, Bilò MB, Sturm GJ, Rodríguez del Río P, Gawlik R, Ruëff F, Paraskevopoulos G, Valovirta E, Pfaar O, Calderón MA, Demoly P. Contraindications to immunotherapy: a global approach. Clin Transl Allergy 2019; 9:45. [PMID: 31528333 PMCID: PMC6737684 DOI: 10.1186/s13601-019-0285-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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: 10/08/2018] [Accepted: 09/04/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Recommendations on contraindications to allergen immunotherapy (AIT) have been independently developed by National and International Societies/Academies. AIT contraindications are mainly based on case reports, case-series, or experts' opinion, while evidence-based information is limited. The aim of the present review was to describe existing guidelines on contraindications to AIT and to highlight differences between them. MAIN BODY An extended review of the literature regarding contraindications to AIT for respiratory allergy and venom hypersensitivity was performed. Furthermore, Societies and Academies registered in the World Allergy Organization and EAACI databases, were asked for additional information. Only AIT guidelines published under official auspicies were included. A large heterogeneity among the various recommendations on contraindications was registered. Common contraindications to most of the guidelines were: lack of adherence, pregnancy before the start of AIT, the use of beta-blockers, certain age groups, uncontrolled asthma, autoimmune diseases and malignancies. CONCLUSION As new data arise, revisions might soon be needed allowing AIT in the cases of patients treated with ACE inhibitors and beta-blockers, in elderly patients and in patients with concomitant autoimmune diseases and neoplasias in remission. The decision to prescribe AIT is always tailor-made, balancing risk vs benefit. Creating globally accepted guidelines would help Allergologists in their decision making.
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Affiliation(s)
- C. Pitsios
- Medical School, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - M. Tsoumani
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, University of Manchester and NIHR Manchester Biomedical Research Centre, Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - M. B. Bilò
- Dept. of Internal Medicine, Allergy Unit, University Hospital, Ancona, Italy
| | - G. J. Sturm
- Dept. of Dermatology and Venereology, Medical University of Graz, Graz, Austria
- Allergy Outpatient Clinic Reumannplatz, Vienna, Austria
| | | | - R. Gawlik
- Dept. of Internal Medicine, Allergy and Clin. Immunology, Silesian University of Medicine, Katowice, Poland
| | - F. Ruëff
- Dermatology and Allergology Clinic and Policlinic, Ludwig-Maximilians University, Munich, Germany
| | - G. Paraskevopoulos
- Allergy Outpatient Clinic, 401 General Military Hospital of Athens, Athens, Greece
| | - E. Valovirta
- Terveystalo Turku, Allergy Clinic, University of Turku, Turku, Finland
| | - O. Pfaar
- Department of Otorhinolaryngology, Head and Neck Surgery, Universitätsmedizin Manneim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
- Center for Rhinology and Allergology, Wiesbaden, Germany
| | - M. A. Calderón
- Section of Allergy and Clinical Immunology, Imperial College London, National Heart and Lung Institute and Royal Brompton Hospital NSH, London, UK
| | - P. Demoly
- Département de Pneumologie et Addictologie, Hôpital Arnaud de Villeneuve, University Hospital of Montpellier, Montpellier, France
- UMR-S 1136, IPLESP, Equipe EPAR, Sorbonne Université, 75013 Paris, France
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Paraskevopoulos G, Monteiro S, Vosátka R, Krátký M, Navrátilová L, Trejtnar F, Stolaříková J, Vinšová J. Corrigendum to "Novel salicylanilides from 4,5-dihalogenated salicylic acids: Synthesis, antimicrobial activity and cytotoxicity" [Bioorg. Med. Chem. 25 (2017) 1524-1532]. Bioorg Med Chem 2017; 25:2530. [PMID: 28285926 DOI: 10.1016/j.bmc.2017.02.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Georgios Paraskevopoulos
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Sara Monteiro
- Institute of Organic Chemistry and Technology, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 53210 Pardubice, Czech Republic
| | - Rudolf Vosátka
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Martin Krátký
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Lucie Navrátilová
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - František Trejtnar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 50005 Hradec Králové, Czech Republic
| | - Jiřina Stolaříková
- Laboratory for Mycobacterial Diagnostics and Tuberculosis, Regional Institute of Public Health in Ostrava, Partyzánské námĕstí 7, 70200 Ostrava, Czech Republic
| | - Jarmila Vinšová
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
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Paraskevopoulos G, Monteiro S, Vosátka R, Krátký M, Navrátilová L, Trejtnar F, Stolaříková J, Vinšová J. Novel salicylanilides from 4,5-dihalogenated salicylic acids: Synthesis, antimicrobial activity and cytotoxicity. Bioorg Med Chem 2017; 25:1524-1532. [DOI: 10.1016/j.bmc.2017.01.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 01/09/2017] [Accepted: 01/12/2017] [Indexed: 11/24/2022]
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Paraskevopoulos G, Krátký M, Mandíková J, Trejtnar F, Stolaříková J, Pávek P, Besra G, Vinšová J. Novel derivatives of nitro-substituted salicylic acids: Synthesis, antimicrobial activity and cytotoxicity. Bioorg Med Chem 2015; 23:7292-301. [PMID: 26526729 DOI: 10.1016/j.bmc.2015.10.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [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: 08/21/2015] [Revised: 10/13/2015] [Accepted: 10/22/2015] [Indexed: 02/08/2023]
Abstract
Inspired by the high antituberculous activity of novel nitro-substituted derivatives and based on promising predicted ADMET properties we have synthesized a series of 33 salicylanilides containing nitro-group in their salicylic part and evaluated them for their in vitro antimycobacterial, antimicrobial and antifungal activities. The presence of nitro-group in position 4 of the salicylic acid was found to be beneficial and the resulting molecules exhibited minimum inhibitory concentrations (MICs) ranging from 2 to 32 μM against Mycobacterium tuberculosis. The best activity was found for 2-hydroxy-4-nitro-N-[4-(trifluoromethyl)phenyl]benzamide (MIC=2 μM). 4-Nitrosalicylanilides were also found to be active against all Staphylococcus species tested while for MRSA strain 2-hydroxy-4-nitro-N-[4-(trifluoromethyl)phenyl]benzamide's MIC was 0.98 μM. None of the nitrosalicylanilides was active against Enterococcus sp. J 14365/08 and no considerable activity was found against Gram-negative bacteria or fungi. The hepatotoxicity of all nitrosalicylanilides was found to be in the range of their MICs for HepG2 cells.
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Affiliation(s)
- Georgios Paraskevopoulos
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Martin Krátký
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Jana Mandíková
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - František Trejtnar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Jiřina Stolaříková
- Laboratory for Mycobacterial Diagnostics and Tuberculosis, Regional Institute of Public Health in Ostrava, Partyzánské náměstí 7, 702 00 Ostrava, Czech Republic
| | - Petr Pávek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Gurdyal Besra
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
| | - Jarmila Vinšová
- Department of Inorganic and Organic Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
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Pitsios C, Demoly P, Bilò MB, Gerth van Wijk R, Pfaar O, Sturm GJ, Rodriguez del Rio P, Tsoumani M, Gawlik R, Paraskevopoulos G, Ruëff F, Valovirta E, Papadopoulos NG, Calderón MA. Clinical contraindications to allergen immunotherapy: an EAACI position paper. Allergy 2015; 70:897-909. [PMID: 25913519 DOI: 10.1111/all.12638] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2015] [Indexed: 10/23/2022]
Abstract
Clinical indications for allergen immunotherapy (AIT) in respiratory and Hymenoptera venom allergy are well established; however, clinical contraindications to AIT are not always well documented. There are some discrepancies when classifying clinical contraindications for different forms of AIT as 'absolute' or 'relative'. EAACI Task Force on 'Contraindications to AIT' was created to evaluate and review current literature on clinical contraindications, and to update recommendations for both sublingual and subcutaneous AIT for respiratory and venom immunotherapy. An extensive review of the literature was performed on the use of AIT in asthma, autoimmune disorders, malignant neoplasias, cardiovascular diseases, acquired immunodeficiencies and other chronic diseases (including mental disorders), in patients treated with β-blockers, ACE inhibitors or monoamine oxidase inhibitors, in children under 5 years of age, during pregnancy and in patients with poor compliance. Each topic was addressed by the following three questions: (1) Are there any negative effects of AIT on this concomitant condition/disease? (2) Are more frequent or more severe AIT-related side-effects expected? and (3) Is AIT expected to be less efficacious? The evidence, for the evaluation of these clinical conditions as contraindications, was limited, and most of the conclusions were based on case reports. Based on an extended literature research, recommendations for each medical condition assessed are provided. The final decision on the administration of AIT should be based on individual evaluation of any medical condition and a risk/benefit assessment for each patient.
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Affiliation(s)
- C. Pitsios
- Department of Nutrition and Dietetics; Harokopio University; Athens Greece
| | - P. Demoly
- Département de Pneumologie et Addictologie; Hôpital Arnaud de Villeneuve; University Hospital of Montpellier; Montpellier France
- UPMC Paris 06; UMR-S 1136; IPLESP; Equipe EPAR; Sorbonne Universités; Paris France
| | - M. B. Bilò
- Allergy Unit; Department of Internal Medicine; University Hospital; Ancona Italy
| | - R. Gerth van Wijk
- Department of Internal Medicine; Section of Allergology; Erasmus MC; Rotterdam The Netherlands
| | - O. Pfaar
- Center for Rhinology and Allergology; Wiesbaden Germany
- Department of Otorhinolaryngology, Head and Neck Surgery; Universitätsmedizin Mannheim; Medical Faculty Mannheim; Heidelberg University; Mannheim Germany
| | - G. J. Sturm
- Department of Dermatology and Venerology; Medical University of Graz; Graz Austria
| | | | - M. Tsoumani
- Centre for Respiratory Medicine and Allergy; University Hospital of South Manchester; The University of Manchester; Manchester Academic Health Science Centre; Manchester UK
| | - R. Gawlik
- Department of Internal Medicine, Allergy and Clinical Immunology; Medical University of Silesia; Katowice Poland
| | - G. Paraskevopoulos
- Allergy Outpatient Clinic; 401 General Military Hospital of Athens; Athens Greece
| | - F. Ruëff
- Department of Dermatology and Allergology; Ludwig-Maximilians University; Munich Germany
| | - E. Valovirta
- Department of Lung Diseases and Clinical Allergology; University of Turku; Turku Finland
| | - N. G. Papadopoulos
- Allergy Department; 2nd Pediatric Clinic; University of Athens; Athens Greece
- Center for Pediatrics & Child Health; Institute of Human Development; University of Manchester; Manchester UK
| | - M. A. Calderón
- Section of Allergy and Clinical Immunology; Imperial College London; National Heart and Lung Institute and Royal Brompton Hospital NHS; London UK
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Paraskevopoulos G, Alivertis D, Theodorou V, Skobridis K. New Calix[4]arene-Cored Peripherally Functionalized Dendrimers: Synthesis and Conformational Characteristics. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201400304] [Citation(s) in RCA: 4] [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] [Indexed: 11/12/2022]
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Krátký M, Bősze S, Baranyai Z, Szabó I, Stolaříková J, Paraskevopoulos G, Vinšová J. Synthesis and in vitro biological evaluation of 2-(phenylcarbamoyl)phenyl 4-substituted benzoates. Bioorg Med Chem 2015; 23:868-75. [DOI: 10.1016/j.bmc.2014.12.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 12/09/2014] [Accepted: 12/11/2014] [Indexed: 12/28/2022]
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Skobridis K, Theodorou V, Paraskevopoulos G, Seichter W, Weber E. 3,3''-Bis(9-hy-droxy-fluoren-9-yl)-1,1':3',1''-terphen-yl. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o1514-5. [PMID: 24098206 PMCID: PMC3790384 DOI: 10.1107/s1600536813024033] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Accepted: 08/27/2013] [Indexed: 11/12/2022]
Abstract
The asymmetric unit of the title compound, C44H30O2, contains two independent mol-ecules in which the terminal rings of the terphenyl element are inclined at angles of 36.3 (1) and 22.5 (1)° with respect to the central ring and the dihedral angles between the fluorenyl units are 72.3 (1) and 62.8 (1)°. In the crystal, pairs of O-H⋯O hydrogen bonds link the mol-ecules into inversion dimers. The hy-droxy H atoms not involved in these hydrogen bonds form O-H⋯π inter-actions in which the central terphenyl rings act as acceptors. Weak C-H⋯O contacts and π-π [centroid-centroid distance = 4.088 (2) Å] stacking inter-actions also occur. Taking into account directed non-covalent bonding between the molecules, the crystal is constructed of supramolecular strands extending along the a-axis direction.
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Affiliation(s)
| | | | | | - Wilhelm Seichter
- Institut für Organische Chemie, TU Bergakademie Freiberg, Leipziger Strasse 29, D-09596 Freiberg/Sachsen, Germany
| | - Edwin Weber
- Institut für Organische Chemie, TU Bergakademie Freiberg, Leipziger Strasse 29, D-09596 Freiberg/Sachsen, Germany
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Paraskevopoulos G, Sifnaios E, Christodoulopoulos K, Mantopoulou F, Papakonstantis M, Sabaziotis D. Successful treatment of mastocytic anaphylactic episodes with reduction of skin mast cells after anti-IgE therapy. Eur Ann Allergy Clin Immunol 2013; 45:52-55. [PMID: 23821833] [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: 06/02/2023]
Abstract
Mastocytosis is a clonal disease derived from hematopoietic bone marrow progenitor cells. Clinical manifestations of the disease vary greatly depending on tissue involvement. Omalizumab is a recombinant humanized monoclonal anti-IgE antibody licensed in the treatment of asthma with increasing reports of clinical eficiency in other allergic diseases. We describe a case of a patient with mastocytosis responsive clinically and patho-physiologically after anti-IgE treatment.
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Affiliation(s)
- G Paraskevopoulos
- Allergy and Clinical Immunology Department, 401 General Military Hospital of Athens, Greece
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Ricklin D, Qu H, Huang Y, Bai H, Reis ES, Chen H, DeAngelis RA, Tzekou A, Paraskevopoulos G, Li Y, Maciejewsi M, Resuello RR, Lupu F, Barlow PN, Lambris JD. Bringing compstatin to the next level: Novel analogs with improved potency, pharmacokinetic profiles and administration options suitable for systemic application. Immunobiology 2012. [DOI: 10.1016/j.imbio.2012.08.037] [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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Theodorou V, Gogou M, Philippidou M, Ragoussis V, Paraskevopoulos G, Skobridis K. Synthesis of β,γ-unsaturated primary amides from α,β-unsaturated acids and investigation of the mechanism. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.096] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Alivertis D, Paraskevopoulos G, Theodorou V, Skobridis K. Dendritic effects of crown ether-functionalized dendrimers on the solvent extraction of metal ions. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.08.053] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Paraskevopoulos G, Jacobson M, Carr V, Calderon M, Till S, Francis J, Durham S. Grass pollen injection immunotherapy: Time course of suppression of allergen-induced late-phase skin responses. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.1072] [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: 11/28/2022]
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Abstract
Thyroid invasion by Aspergillus spp. can occur with invasive aspergillosis, although it is rarely diagnosed antemortem. We describe a case of multiple thyroid abscesses from A. fumigatus that caused esophageal obstruction in a patient with myelodysplasia. Despite aggressive antifungal treatment, the outcome was rapidly fatal.
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Affiliation(s)
- Michael L Sion
- Third Department of Internal Medicine, General Hospital G. Papanikolaou, School of Medicine, Aristotelian University of Thessaloniki, Thessaloniki, Greece.
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Cvetanovic RJ, Singleton DL, Paraskevopoulos G. Evaluations of the mean values and standard errors of rate constants and their temperature coefficients. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100464a010] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Michaud P, Paraskevopoulos G, Cvetanovic RJ. Relative rates of the reactions of O(1D2) atoms with alkanes and cycloalkanes. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100608a003] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Singleton DL, Paraskevopoulos G, Irwin RS. Laser, photolysis of formic acid vapor at 222 nm. quantum yields of stable products. Res Chem Intermed 1989. [DOI: 10.1163/156856789x00131] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Jolly GS, Singleton DL, McKenney DJ, Paraskevopoulos G. Laser photolysis of HNO3 at 222 nm: Direct determination of the primary quantum yield of OH. J Chem Phys 1986. [DOI: 10.1063/1.450719] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Failes RL, Singleton DL, Paraskevopoulos G, Irwin RS. Rate constants for the reaction of ground-state oxygen atoms with methanol from 297 to 544 K. INT J CHEM KINET 1982. [DOI: 10.1002/kin.550140405] [Citation(s) in RCA: 18] [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] [Indexed: 11/08/2022]
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Abstract
A fast flash photolysis kinetic spectrophotometer capable of measuring rates of up to 105 s−1 is described. The rates of hydrogen abstraction from H2, CH4, C2H6, and C3H8 by OH radicals at 295 ± 2 K, have been measured in the gas phase by hydroxyl resonance absorption spectrophotometry. The influence of secondary reactions on the measured rates and the derivation of the absolute rate constants is discussed in detail.The absolute rate constants in units of cm3 mol−1 s−1 were found to be: [Formula: see text][Formula: see text][Formula: see text] and [Formula: see text]
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Abstract
The rate of reaction of O(1D2) with N2O relative to the rate of its reaction with neopentane has been determined by a competitive method. The value obtained, [Formula: see text] is in good agreement with several values in the literature. It is also found that N2O does not deactivate O(1D2) to O(3P) but reacts with it to form products.
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