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Klimt M, Stadler M, Binder U, Krauss J. Synthesis of novel benzylamine antimycotics and evaluation of their antimycotic potency. Arch Pharm (Weinheim) 2024; 357:e2300381. [PMID: 38345272 DOI: 10.1002/ardp.202300381] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 01/03/2024] [Accepted: 01/05/2024] [Indexed: 05/08/2024]
Abstract
A series of 23 novel benzylamines was synthesized by reductive amination from halogen-substituted 3- and 4-benzyloxybenzaldehyde derivatives and 6-methylhept-2-yl amine or n-octylamine. The antimycotic activity of the resulting amines was evaluated in a microdilution assay against the apathogenic yeast Yarrowia lipolytica as test microorganism. Promising compounds were also tested against human pathogenic Candida species. The influence of halogen substituents at the benzyl ether side chain was studied in this screening, as well as the influence of the branched side chain of (±)-6-methylhept-2-yl amine in comparison with the n-octyl side chain.
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Affiliation(s)
- Monika Klimt
- Department of Pharmacy-Center for Drug Research, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Martina Stadler
- Department of Pharmacy-Center for Drug Research, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Ulrike Binder
- Department of Hygiene, Microbiology and Public Health, Institute of Hygiene and Medical Microbiology, Medical University Innsbruck, Innsbruck, Austria
| | - Jürgen Krauss
- Department of Pharmacy-Center for Drug Research, Ludwig-Maximilians-University Munich, Munich, Germany
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2
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Dvořáčková E, Šíma M, Zajacová A, Vyskočilová K, Kotowski T, Dunovská K, Klapková E, Havlín J, Lischke R, Slanař O. Dosing Optimization of Posaconazole in Lung-Transplant Recipients Based on Population Pharmacokinetic Model. Antibiotics (Basel) 2023; 12:1399. [PMID: 37760696 PMCID: PMC10525625 DOI: 10.3390/antibiotics12091399] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/29/2023] Open
Abstract
Although posaconazole tablets show relatively low variability in pharmacokinetics (PK), the proportion of patients achieving the PK/PD target at the approved uniform dose for both prophylaxis and therapy is not satisfactory. The aim of this study was to develop a posaconazole population PK model in lung-transplant recipients and to propose a covariate-based dosing optimization for both prophylaxis and therapy. In this prospective study, 80 posaconazole concentrations obtained from 32 lung-transplant patients during therapeutic drug monitoring were analyzed using nonlinear mixed-effects modelling, and a Monte Carlo simulation was used to describe the theoretical distribution of posaconazole PK profiles at various dosing regimens. A one-compartment model with both linear absorption and elimination best fit the concentration-time data. The population apparent volume of distribution was 386.4 L, while an apparent clearance of 8.8 L/h decreased by 0.009 L/h with each year of the patient's age. Based on the covariate model, a dosing regimen of 200 mg/day for prophylaxis in patients ˃60 years, 300 mg/day for prophylaxis in patients ˂60 years and for therapy in patients ˃60 years, and 400 mg/day for therapy in patients ˂60 years has been proposed. At this dosing regimen, the PK/PD target for prophylaxis and therapy is reached in 95% and 90% of population, respectively, representing significantly improved outcomes in comparison with the uniform dose.
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Affiliation(s)
- Eliška Dvořáčková
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, 128 00 Prague, Czech Republic; (E.D.); (O.S.)
| | - Martin Šíma
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, 128 00 Prague, Czech Republic; (E.D.); (O.S.)
| | - Andrea Zajacová
- Prague Lung Transplant Program, Department of Pneumology, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, 150 06 Prague, Czech Republic; (A.Z.); (K.V.); (T.K.)
| | - Kristýna Vyskočilová
- Prague Lung Transplant Program, Department of Pneumology, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, 150 06 Prague, Czech Republic; (A.Z.); (K.V.); (T.K.)
| | - Tereza Kotowski
- Prague Lung Transplant Program, Department of Pneumology, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, 150 06 Prague, Czech Republic; (A.Z.); (K.V.); (T.K.)
| | - Kateřina Dunovská
- Department of Medical Chemistry and Clinical Biochemistry, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, 150 06 Prague, Czech Republic; (K.D.); (E.K.)
| | - Eva Klapková
- Department of Medical Chemistry and Clinical Biochemistry, Second Faculty of Medicine, Charles University in Prague and Motol University Hospital, 150 06 Prague, Czech Republic; (K.D.); (E.K.)
| | - Jan Havlín
- Prague Lung Transplant Program, 3rd Department of Surgery, First Faculty of Medicine, Charles University in Prague and Motol University Hospital, 150 06 Prague, Czech Republic; (J.H.); (R.L.)
| | - Robert Lischke
- Prague Lung Transplant Program, 3rd Department of Surgery, First Faculty of Medicine, Charles University in Prague and Motol University Hospital, 150 06 Prague, Czech Republic; (J.H.); (R.L.)
| | - Ondřej Slanař
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, 128 00 Prague, Czech Republic; (E.D.); (O.S.)
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Borgonovo F, Quici M, Gidaro A, Giustivi D, Cattaneo D, Gervasoni C, Calloni M, Martini E, La Cava L, Antinori S, Cogliati C, Gori A, Foschi A. Physicochemical Characteristics of Antimicrobials and Practical Recommendations for Intravenous Administration: A Systematic Review. Antibiotics (Basel) 2023; 12:1338. [PMID: 37627758 PMCID: PMC10451375 DOI: 10.3390/antibiotics12081338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/11/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Most antimicrobial drugs need an intravenous (IV) administration to achieve maximum efficacy against target pathogens. IV administration is related to complications, such as tissue infiltration and thrombo-phlebitis. This systematic review aims to provide practical recommendations about diluent, pH, osmolarity, dosage, infusion rate, vesicant properties, and phlebitis rate of the most commonly used antimicrobial drugs evaluated in randomized controlled studies (RCT) till 31 March 2023. The authors searched for available IV antimicrobial drugs in RCT in PUBMED EMBASE®, EBSCO® CINAHL®, and the Cochrane Controlled Clinical trials. Drugs' chemical features were searched online, in drug data sheets, and in scientific papers, establishing that the drugs with a pH of <5 or >9, osmolarity >600 mOsm/L, high incidence of phlebitis reported in the literature, and vesicant drugs need the adoption of utmost caution during administration. We evaluated 931 papers; 232 studies were included. A total of 82 antimicrobials were identified. Regarding antibiotics, 37 reach the "caution" criterion, as well as seven antivirals, 10 antifungals, and three antiprotozoals. In this subgroup of antimicrobials, the correct vascular access device (VAD) selection is essential to avoid complications due to the administration through a peripheral vein. Knowing the physicochemical characteristics of antimicrobials is crucial to improve the patient's safety significantly, thus avoiding administration errors and local side effects.
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Affiliation(s)
- Fabio Borgonovo
- Department of Infectious Diseases, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, University of Milan, 20157 Milan, Italy
| | - Massimiliano Quici
- Internal Medicine Unit, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, 20157 Milan, Italy
| | - Antonio Gidaro
- Internal Medicine Unit, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, 20157 Milan, Italy
| | - Davide Giustivi
- Emergency Department and Vascular Access Team ASST Lodi, 26900 Lodi, Italy
| | - Dario Cattaneo
- Unit of Clinical Pharmacology, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, University of Milan, 20157 Milan, Italy
| | - Cristina Gervasoni
- Department of Infectious Diseases, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, University of Milan, 20157 Milan, Italy
| | - Maria Calloni
- Internal Medicine Unit, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, 20157 Milan, Italy
| | - Elena Martini
- Internal Medicine Unit, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, 20157 Milan, Italy
| | - Leyla La Cava
- Internal Medicine Unit, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, 20157 Milan, Italy
| | - Spinello Antinori
- Department of Infectious Diseases, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, University of Milan, 20157 Milan, Italy
| | - Chiara Cogliati
- Internal Medicine Unit, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, Department of Biomedical and Clinical Sciences, University of Milan, 20157 Milan, Italy
| | - Andrea Gori
- Department of Infectious Diseases, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, University of Milan, 20157 Milan, Italy
| | - Antonella Foschi
- Department of Infectious Diseases, Luigi Sacco Hospital, ASST Fatebenefratelli-Sacco, University of Milan, 20157 Milan, Italy
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Schrecker J, Seitz B, Berger T, Daas L, Behrens-Baumann W, Auw-Hädrich C, Schütt S, Kerl S, Rentner-Andres S, Hof H. Malignant Keratitis Caused by a Highly-Resistant Strain of Fusarium Tonkinense from the Fusarium Solani Complex. J Fungi (Basel) 2021; 7:jof7121093. [PMID: 34947075 PMCID: PMC8707679 DOI: 10.3390/jof7121093] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 11/12/2021] [Revised: 11/30/2021] [Accepted: 12/11/2021] [Indexed: 12/28/2022] Open
Abstract
Fusarium spp. are moulds ubiquitously distributed in nature and only occasionally pathogenic for humans. Species of the Fusarium solani complex are the predominant keratitis-inducing pathogens, because they are endowed with proper virulence factors. These fungi can adhere to the cornea creating a biofilm and, with the help of enzymes and cytotoxins, penetrate the cornea. Whereas an intact cornea is hardly able to be invaded by Fusarium spp. in spite of appropriate virulence factors, these opportunistic fungi may profit from predisposing conditions, for example mechanical injuries. This can lead to a progressive course of corneal infection and may finally affect the whole eye up to the need for enucleation. Here, we present and discuss the clinical, microbiological and histopathological aspects of a particular case due to Fusarium tonkinense of the Fusarium solani complex with severe consequences in a patient without any obvious predisposing factors. A broad portfolio of antifungal agents was applied, both topically and systemically as well as two penetrating keratoplasties were performed. The exact determination of the etiologic agent of the fungal infection proved likewise to be very challenging.
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Affiliation(s)
- Jens Schrecker
- Department of Ophthalmology, Rudolf Virchow Klinikum Glauchau, Virchowstraße 18, D-08371 Glauchau, Germany;
| | - Berthold Seitz
- Department of Ophthalmology, Saarland University Medical Center, Kirrbergstr. 100, D-66424 Homburg, Germany; (B.S.); (T.B.); (L.D.)
| | - Tim Berger
- Department of Ophthalmology, Saarland University Medical Center, Kirrbergstr. 100, D-66424 Homburg, Germany; (B.S.); (T.B.); (L.D.)
| | - Loay Daas
- Department of Ophthalmology, Saarland University Medical Center, Kirrbergstr. 100, D-66424 Homburg, Germany; (B.S.); (T.B.); (L.D.)
| | - Wolfgang Behrens-Baumann
- Emeritus, Department of Ophthalmology, Otto-von-Guericke-University Magdeburg, Eckenbornweg 5j, D-37075 Göttingen, Germany;
| | - Claudia Auw-Hädrich
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Kilianstr. 5, D-79106 Freiburg im Breisgau, Germany;
| | - Sabine Schütt
- MVZ Labor Limbach and Colleagues, Im Breitspiel 16, D-69126 Heidelberg, Germany; (S.S.); (S.K.)
| | - Sabine Kerl
- MVZ Labor Limbach and Colleagues, Im Breitspiel 16, D-69126 Heidelberg, Germany; (S.S.); (S.K.)
| | - Sascha Rentner-Andres
- Limbach Analytics GmbH, Arotop Laboratories, Dekan-Laiststr. 9, D-55129 Mainz, Germany;
| | - Herbert Hof
- MVZ Labor Limbach and Colleagues, Im Breitspiel 16, D-69126 Heidelberg, Germany; (S.S.); (S.K.)
- Correspondence: ; Tel.: +49-6221-34-32-342
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Zaccara G, Lattanzi S. A review of pharmacokinetic drug interactions between antimicrobial and antiseizure medications in children. Epileptic Disord 2021; 23:229-56. [PMID: 33814360 DOI: 10.1684/epd.2021.1261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Comorbidity between epilepsy and infectious diseases in children is frequent. Pharmacokinetic drug-drug interactions (DDIs) between antiseizure medications (ASMs) and anti-infectives can occur and influence their efficacy or cause toxicity. All potential DDIs between ASMs and antimicrobial agents used in children were identified through consultation of drug compendia. Clinical studies, case reports and summaries of product characteristics of all identified drugs were also searched. A typical example of a DDI that is often observed in children is that involving valproate (VPA) and carbapenem antibiotics. This DDI has a unique mechanism of action (inhibits the enzyme that catalyses the hydrolysis of VPA-glucuronide) and leads to a fall of around 60% of VPA level, associated with seizure recurrence. An example of bidirectional DDI involves the antimycotic voriconzole and several ASMs. Voriconazole is metabolized and is a strong inhibitor of cytochrome (CYP)3A4, CYP2C9/10 and CYP2C19. There is clinical evidence of induction of voriconazole metabolism with possible loss of its efficacy by phenytoin (PHT), while voriconazole increases the levels of PHT. Other ASMs that are inducers of these enzymes, such as carbamazepine (CBZ), phenobarbital, stiripentol and to a lesser degree, oxcarbazepine, might be predicted to decrease the level of voriconazole. Voriconazole might also be predicted to increase levels of cannabidiol, CBZ, lacosamide, midazolam, and zonisamide. DDIs between ASMs and some antiviral agents are potentially even more frequent and clinically relevant.
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Abstract
Fungal pathogens present a challenge in medicine and agriculture. They also harm ecosystems and threaten biodiversity. The allylamine class of antimycotics targets the enzyme squalene monooxygenase. This enzyme occupies a key position in the sterol biosynthesis pathway in eukaryotes, catalyzing the rate-limiting reaction by introducing an oxygen atom to the squalene substrate converting it to 2,3-oxidosqualene. Currently, terbinafine—the most widely used allylamine—is mostly used for treating superficial fungal infections. The ability to better target this enzyme will have significant implications for human health in the treatment of fungal infections. The human orthologue can also be targeted for cholesterol-lowering therapeutics and in cancer therapies. This review will focus on the structural basis for improving the current therapeutics for fungal squalene monooxygenase.
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Affiliation(s)
- Alia A Sagatova
- Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY 10461, USA
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Farzaneh M. Concise Review; Effects of Antibiotics and Antimycotics on the Biological Properties of Human Pluripotent and Multipotent Stem Cells. Curr Stem Cell Res Ther 2020; 16:400-405. [PMID: 33272189 DOI: 10.2174/1574888x16999201203214425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 08/13/2020] [Accepted: 09/17/2020] [Indexed: 11/22/2022]
Abstract
Human Pluripotent Stem Cells (PSCs), including Embryonic Stem Cells (ESCs) and induced Pluripotent Stem Cells (iPSCs), have the remarkable potential to self-renew and develop into various cell lineages. Human Mesenchymal Stem Cells (MSCs) or multipotent stem cells that are present in various organs can self-renew and differentiate into multiple mesenchymal lineages. Both human PSCs and MSCs hold great promise in cell-based therapies, disease modeling, drug discovery, and regenerative medicine. Human stem cells must be cultured under the optimal conditions to use them in transplantology. Therefore, researchers must ensure the sterility of human stem cell lines. Bacterial contamination is a common problem in laboratories and major precautions are required to detect the types of microorganisms, and to eliminate and prevent contamination in cell cultures. Stem cell culture media usually contain antibiotics and antimycotics such as penicillin- streptomycin (pen-strep), gentamicin, and amphotericin B (AmB) to avoid bacterial, fungal, and yeast contaminants. Numerous publications recognized the serious effect of antibiotics and antimycotics on in vitro properties of human stem cells, including proliferation, differentiation, survival, and genetic instability. This review study aimed to understand the impact of routinely used antibiotics and antimycotics such as pen-strep, gentamicin, and AmB on viability, proliferation, and functional properties (differentiation and pluripotency) of human PSCs and MSCs.
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Affiliation(s)
- Maryam Farzaneh
- Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Abstract
The most important medical relevance of Fusarium spp. is based on their phytopathogenic property, contributing to hunger and undernutrition in the world. A few Fusarium spp., such as F. oxysporum and F. solani, are opportunistic pathogens and can induce local infections, i.e., of nails, skin, eye, and nasal sinuses, as well as occasionally, severe, systemic infections, especially in immunocompromised patients. These clinical diseases are rather difficult to cure by antimycotics, whereby the azoles, such as voriconazole, and liposomal amphotericin B give relatively the best results. There are at least two sources of infection, namely the environment and the gut mycobiome of a patient. A marked impact on human health has the ability of some Fusarium spp. to produce several mycotoxins, for example, the highly active trichothecenes. These mycotoxins may act either as pathogenicity factors, which means that they damage the host and hamper its defense, or as virulence factors, enhancing the aggressiveness of the fungi. Acute intoxications are rare, but chronic exposition by food items is a definite health risk, although in an individual case, it remains difficult to describe the role of mycotoxins for inducing disease. Mycotoxins taken up either by food or produced in the gut may possibly induce an imbalance of the intestinal microbiome. A particular aspect is the utilization of F. venetatum to produce cholesterol-free, protein-rich food items.
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Affiliation(s)
- Herbert Hof
- MVZ Labor Limbach und Kollegen, Im Breitspiel 16, 69126 Heidelberg, Germany
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Abstract
Annually, over 150 million severe cases of fungal infections occur worldwide, resulting in approximately 1.7 million deaths per year. Alarmingly, these numbers are continuously on the rise with a number of social and medical developments during the past decades that have abetted the spread of fungal infections. Additionally, the long-term therapeutic application and prophylactic use of antifungal drugs in high-risk patients have promoted the emergence of (multi)drug-resistant fungi, including the extremely virulent strain Candida auris. Hence, fungal infections are already a global threat that is becoming increasingly severe. In this article, we underline the importance of more and effective research to counteract fungal infections and their consequences.
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Affiliation(s)
- Katharina Kainz
- Institute for Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Maria A Bauer
- Institute for Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria
| | - Frank Madeo
- Institute for Molecular Biosciences, NAWI Graz, University of Graz, Graz, Austria.,BioHealth Graz, Graz, Austria.,BioTechMed Graz, Graz, Austria
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Vasco AV, Brode M, Méndez Y, Valdés O, Rivera DG, Wessjohann LA. Synthesis of Lactam-Bridged and Lipidated Cyclo-Peptides as Promising Anti-Phytopathogenic Agents. Molecules 2020; 25:E811. [PMID: 32069902 PMCID: PMC7070897 DOI: 10.3390/molecules25040811] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 11/11/2019] [Revised: 02/07/2020] [Accepted: 02/07/2020] [Indexed: 12/11/2022] Open
Abstract
Antimicrobial resistance to conventional antibiotics and the limited alternatives to combat plant-threatening pathogens are worldwide problems. Antibiotic lipopeptides exert remarkable membrane activity, which usually is not prone to fast resistance formation, and often show organism-type selectivity. Additional modes of action commonly complement the bioactivity profiles of such compounds. The present work describes a multicomponent-based methodology for the synthesis of cyclic polycationic lipopeptides with stabilized helical structures. The protocol comprises an on solid support Ugi-4-component macrocyclization in the presence of a lipidic isocyanide. Circular dichroism was employed to study the influence of both macrocyclization and lipidation on the amphiphilic helical structure in water and micellar media. First bioactivity studies against model phytopathogens demonstrated a positive effect of the lipidation on the antimicrobial activity.
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Affiliation(s)
- Aldrin V. Vasco
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany; (A.V.V.); (M.B.); (Y.M.)
| | - Martina Brode
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany; (A.V.V.); (M.B.); (Y.M.)
| | - Yanira Méndez
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany; (A.V.V.); (M.B.); (Y.M.)
- Center for Natural Products Research, Faculty of Chemistry, University of Havana, Zapata y G, Havana 10400, Cuba
| | - Oscar Valdés
- Vicerrectoría de Investigación y Postgrado, Universidad Católica del Maule, Talca 3460000, Chile;
| | - Daniel G. Rivera
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany; (A.V.V.); (M.B.); (Y.M.)
- Center for Natural Products Research, Faculty of Chemistry, University of Havana, Zapata y G, Havana 10400, Cuba
| | - Ludger A. Wessjohann
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany; (A.V.V.); (M.B.); (Y.M.)
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Kragelund C, Keller MK. The oral microbiome in oral lichen planus during a 1-year randomized clinical trial. Oral Dis 2018; 25:327-338. [PMID: 30144242 DOI: 10.1111/odi.12961] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 05/30/2018] [Accepted: 08/18/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND Several recent studies have investigated the oral bacteriome in oral lichen planus (OLP), but longitudinal changes in microbiome have not been investigated. OBJECTIVE To study the bacteriome and mycobiome in OLP over a 1-year period and the impact of topical treatment. MATERIAL AND METHODS Samples from 22 symptomatic OLP patients from a double-blinded, randomized intervention study were collected over a 1-year course at five visits. Bacterial and fungal abundances were investigated through lesional cytobrush (CB) and full mouthwash (MW). Initially, all patients received conventional (antimycotic or steroid) and probiotic or placebo treatment. RESULTS The microbial composition differed between the MW and CB samples. During the study period, the microbial composition was individual, with pronounced variability between visits. Patients grouped according to initial conventional treatment. During the study period, unidirectional change in the bacteriome was seen in the antimycotic group, whereas the mycobiome was stable. Malassezia restricta was the most abundant fungus. CONCLUSIONS The microbial composition of MW and CB differs in OLP. CB composition is less influenced by conventional and probiotic intervention. Initial antimycotic treatment influenced the bacteriome during the 1-year period. How the oral microbiome in health and disease is influenced by individual variability of fungi and bacteria, and Malassezia needs further investigation.
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Affiliation(s)
- Camilla Kragelund
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mette Kirstine Keller
- Department of Odontology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Daniel S, Rotem R, Koren G, Lunenfeld E, Levy A. Vaginal antimycotics and the risk for spontaneous abortions. Am J Obstet Gynecol 2018; 218:601.e1-601.e7. [PMID: 29510088 DOI: 10.1016/j.ajog.2018.02.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 10/24/2017] [Revised: 02/18/2018] [Accepted: 02/26/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND Spontaneous abortions are the most common complication of pregnancy. Clotrimazole and miconazole are widely used vaginal-antimycotic agents used for the treatment of vulvovaginal candidiasis. A previous study has suggested an increased risk of miscarriage associated with these azoles, which may lead health professionals to refrain from their use even if clinically indicated. OBJECTIVE The aim of the current study was to assess the risk for spontaneous abortions following first trimester exposure to vaginal antimycotics. STUDY DESIGN A historical cohort study was conducted including all clinically apparent pregnancies that began from January 2003 through December 2009 and admitted for birth or spontaneous abortion at Soroka Medical Center, Clalit Health Services, Beer-Sheva, Israel. A computerized database of medication dispensation was linked with 2 computerized databases containing information on births and spontaneous abortions. Time-varying Cox regression models were constructed adjusting for mother's age, diabetes mellitus, hypothyroidism, obesity, hypercoagulable or inflammatory conditions, recurrent miscarriages, intrauterine contraceptive device, ethnicity, tobacco use, and the year of admission. RESULTS A total of 65,457 pregnancies were included in the study: 58,949 (90.1%) ended with birth and 6508 (9.9%) with a spontaneous abortion. Overall, 3246 (5%) pregnancies were exposed to vaginal antimycotic medications until the 20th gestational week: 2712 (4.2%) were exposed to clotrimazole and 633 (1%) to miconazole. Exposure to vaginal antimycotics was not associated with spontaneous abortions as a group (crude hazard ratio, 1.11; 95% confidence interval, 0.96-1.29; adjusted hazard ratio, 1.11; 95% confidence interval, 0.96-1.29) and specifically for clotrimazole (adjusted hazard ratio, 1.05; 95% confidence interval, 0.89-1.25) and miconazole (adjusted hazard ratio, 1.34; 95% confidence interval, 0.99-1.80). Furthermore, no association was found between categories of dosage of vaginal antimycotics and spontaneous abortions. CONCLUSION Exposure to vaginal antimycotics was not associated with spontaneous abortions.
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Affiliation(s)
- Sharon Daniel
- Department of Public Health, Beer-Sheva, Israel; Faculty of Health Sciences, Beer-Sheva, Israel; Clalit Health Services (Southern District), Beer-Sheva, Israel
| | - Reut Rotem
- Department of Public Health, Beer-Sheva, Israel; Faculty of Health Sciences, Beer-Sheva, Israel
| | - Gideon Koren
- Faculty of Health Sciences, Beer-Sheva, Israel; Motherisk Israel and Maccabi Health Services, Tel Aviv, Israel
| | - Eitan Lunenfeld
- Department of Obstetrics and Gynecology, Beer-Sheva, Israel; Faculty of Health Sciences, Beer-Sheva, Israel; Ben-Gurion University of the Negev, Soroka Medical Center, Beer-Sheva, Israel
| | - Amalia Levy
- Department of Public Health, Beer-Sheva, Israel; Faculty of Health Sciences, Beer-Sheva, Israel.
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Boros E, Pfliegler WP, Kovács R, Jakab Á, Majoros L, Barta Z, Pócsi I. Candida albicans isolates from a single hospital show low phenotypical specialization. J Basic Microbiol 2017; 57:910-921. [PMID: 28891112 DOI: 10.1002/jobm.201700037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 01/23/2017] [Revised: 07/12/2017] [Accepted: 08/17/2017] [Indexed: 11/05/2022]
Abstract
Candida albicans is the best-studied opportunistic human pathogenic yeast species, and its virulence factors, susceptibility to antimycotics, the diversity of its physiological properties and the determinative factors of these traits are interesting from a clinical as well as from an evolutionary perspective. By applying statistical modeling for the phenotypical differences observed among a collection of 63 C. albicans isolates originating from different clinical care units, from a diverse group of patients with or without mycosis, collected in a Hungarian clinic, we found that (i) host-related aspects like anatomical source, care unit of isolation, patients' age, sex, and disease severity, or ABC genotypes of the isolates had less effect on the phenotypic features of this opportunistic pathogen than host-independent aspects, for example, year or month of isolation; (ii) different phenotypic traits did not show any significant correlations with each other; and (iii) different genotypes displayed no anatomical specialization and rarely showed any significant correlation with parameters of isolation either. These results shed light on the dynamic nature and low specialization of the C. albicans populations observable in a narrow geographic range, namely in the patients hospitalized in the different care units of the clinic.
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Affiliation(s)
- Enikő Boros
- Faculty of Science and Technology, Department of Biotechnology and Microbiology, University of Debrecen, Debrecen, Hungary
| | - Walter P Pfliegler
- Faculty of Science and Technology, Department of Biotechnology and Microbiology, University of Debrecen, Debrecen, Hungary.,Postdoctoral Fellowship Programme of the Hungarian Academy of Sciences (MTA), Debrecen, Hungary
| | - Renátó Kovács
- Faculty of Medicine, Department of Medical Microbiology, University of Debrecen, Debrecen, Hungary
| | - Ágnes Jakab
- Faculty of Science and Technology, Department of Biotechnology and Microbiology, University of Debrecen, Debrecen, Hungary
| | - László Majoros
- Faculty of Medicine, Department of Medical Microbiology, University of Debrecen, Debrecen, Hungary
| | - Zoltán Barta
- MTA-DE Lendület Behavioural Ecology Research Group, Faculty of Science and Technology, Department of Evolutionary Zoology and Human Biology, University of Debrecen, Debrecen, Hungary
| | - István Pócsi
- Faculty of Science and Technology, Department of Biotechnology and Microbiology, University of Debrecen, Debrecen, Hungary
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Kaltdorf M, Srivastava M, Gupta SK, Liang C, Binder J, Dietl AM, Meir Z, Haas H, Osherov N, Krappmann S, Dandekar T. Systematic Identification of Anti-Fungal Drug Targets by a Metabolic Network Approach. Front Mol Biosci 2016; 3:22. [PMID: 27379244 PMCID: PMC4911368 DOI: 10.3389/fmolb.2016.00022] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 05/24/2016] [Indexed: 11/13/2022] Open
Abstract
New antimycotic drugs are challenging to find, as potential target proteins may have close human orthologs. We here focus on identifying metabolic targets that are critical for fungal growth and have minimal similarity to targets among human proteins. We compare and combine here: (I) direct metabolic network modeling using elementary mode analysis and flux estimates approximations using expression data, (II) targeting metabolic genes by transcriptome analysis of condition-specific highly expressed enzymes, and (III) analysis of enzyme structure, enzyme interconnectedness ("hubs"), and identification of pathogen-specific enzymes using orthology relations. We have identified 64 targets including metabolic enzymes involved in vitamin synthesis, lipid, and amino acid biosynthesis including 18 targets validated from the literature, two validated and five currently examined in own genetic experiments, and 38 further promising novel target proteins which are non-orthologous to human proteins, involved in metabolism and are highly ranked drug targets from these pipelines.
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Affiliation(s)
- Martin Kaltdorf
- Department of Bioinformatics, Biocenter, University of Würzburg Würzburg, Germany
| | - Mugdha Srivastava
- Department of Bioinformatics, Biocenter, University of Würzburg Würzburg, Germany
| | - Shishir K Gupta
- Department of Bioinformatics, Biocenter, University of Würzburg Würzburg, Germany
| | - Chunguang Liang
- Department of Bioinformatics, Biocenter, University of Würzburg Würzburg, Germany
| | - Jasmin Binder
- Microbiology Institute - Clinical Microbiology, Immunology and Hygiene, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital of Erlangen Erlangen, Germany
| | - Anna-Maria Dietl
- Division of Molecular Biology/Biocenter, Medical University Innsbruck Innsbruck, Austria
| | - Zohar Meir
- Aspergillus and Antifungal Research Laboratory, Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University Tel-Aviv, Israel
| | - Hubertus Haas
- Division of Molecular Biology/Biocenter, Medical University Innsbruck Innsbruck, Austria
| | - Nir Osherov
- Aspergillus and Antifungal Research Laboratory, Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University Tel-Aviv, Israel
| | - Sven Krappmann
- Microbiology Institute - Clinical Microbiology, Immunology and Hygiene, Friedrich-Alexander University Erlangen-Nürnberg, University Hospital of Erlangen Erlangen, Germany
| | - Thomas Dandekar
- Department of Bioinformatics, Biocenter, University of Würzburg Würzburg, Germany
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15
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Tomičić Z, Zupan J, Matos T, Raspor P. Probiotic yeast Saccharomyces boulardii (nom. nud.) modulates adhesive properties of Candida glabrata. Med Mycol 2016; 54:835-45. [PMID: 27250926 DOI: 10.1093/mmy/myw026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 03/20/2016] [Indexed: 12/13/2022] Open
Abstract
Following the widespread use of immunosuppressive therapy together with broad-spectrum antimycotic therapy, the frequency of mucosal and systemic infections caused by the pathogenic yeast Candida glabrata has increased in the past decades. Due to the resistance of C. glabrata to existing azole drugs, it is very important to look for new strategies helping the treatment of such fungal diseases. In this study, we investigated the effect of the probiotic yeast Saccharomyces boulardii (nom. nud.) on C. glabrata adhesion at different temperatures, pH values, and in the presence of fluconazole, itraconazole and amphotericin B. We also studied the adhesion of C. glabrata co-culture with Candida krusei, Saccharomyces cerevisiae, two bacterial probiotics Lactobacillus rhamnosus and Lactobacillus casei The method used to assess adhesion was crystal violet staining. Our results showed that despite the nonadhesiveness of S. boulardii cells, this probiotic significantly affected the adherence ability of C. glabrata This effect was highly dependent on C. glabrata strain and was either antagonistic or synergistic. Regarding the extrinsic factors, temperature did not indicate any significant influence on this S. boulardii modulatory effect, while at high pH and at increased concentrations of antimycotics, S. boulardii did not manage to repress the adhesion of C. glabrata strains. The experiments of C. glabrata co-cultures with other species showed that the adhesiveness of two separate cultures could not be used to predict the adhesiveness of their co-culture.
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Affiliation(s)
- Zorica Tomičić
- Institute of Food Technology, University of Novi Sad, Bulevar cara Lazara 1, 21000 Novi Sad, Serbia
| | - Jure Zupan
- Chair of Biotechnology, Microbiology and Food Safety, Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia (the university in the time of experiments)
| | - Tadeja Matos
- Institute of microbiology and immunology, Medical faculty, University of Ljubljana, Zaloška 4, 1000 Ljubljana, Slovenia
| | - Peter Raspor
- Chair of Biotechnology, Microbiology and Food Safety, Department of Food Science and Technology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, 1000, Ljubljana, Slovenia (the university in the time of experiments)
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Abstract
Recurrent vulvovaginal candidiasis (RVVC) is a common cause of significant morbidity in women in all strata of society affecting millions of women worldwide. Previously, RVVC occurrence was limited by onset of menopause but the widespread use of hormone replacement therapy has extended the at-risk period. Candida albicans remains the dominant species responsible for RVVC, however optimal management of RVVC requires species determination and effective treatment measures are best if species-specific. Considerable progress has been made in understanding risk factors that determine susceptibility to RVVC, particularly genetic factors, as well as new insights into normal vaginal defense immune mechanisms and their aberrations in RVVC. While effective control of RVVC is achievable with the use of fluconazole maintenance suppressive therapy, cure of RVVC remains elusive especially in this era of fluconazole drug resistance. Vaccine development remains a critical challenge and need.
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Abstract
Vulvovaginal candidiasis (VVC) is an extremely common cause of vaginal symptoms in women. Multiple antifungal products are available by either the oral or vaginal route, although no new drugs have become available for two decades. Given the therapeutic equivalence of the antimycotic agents and their routes of administration, the specific drug and formulation selected is entirely arbitrary in relation to final treatment outcome. Nevertheless, multiple factors affecting preference, both practitioner-dependent and patient-dependent, impact on selection of a specific drug and route of administration.
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Affiliation(s)
- Jack D Sobel
- Division of Infectious Diseases, Wayne, State University School of Medicine, Detroit, MI, USA
- Correspondence: Jack D Sobel, Division of Infectious Diseases, Harper University Hospital, 3990 John R, Detroit, MI 48201, USA, Tel +1 313 745 7105, Fax +1 313 993 0302, Email
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Abstract
Preparations with essential oils and their dosages applied in the therapy of children’s infectious diseases are well documented. In contrast, information is only sparingly available about uses of isolated pure essential oil compounds for the treatment of such infections. To find out safe antimicrobials from essential oils, microbiological inhibitory data of children pathogens were combined with oral and dermal acute toxicity data to calculate oral and dermal therapeutical indices (TI). The superiority of antibiotic drugs became obvious following calculating oral TIs of antimicrobials from higher plants, which suggests that oral administrations of essential oil compounds are not suitable to cure severe infections. A few selected compounds from higher plants show moderate effectiveness against gram-positive bacteria, yeast and fungi, but not gram-negative bacteria. Topical application or inhalation of selected compounds for the treatment or additional treatment of mild infections is reasonable.
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Affiliation(s)
- Alexander Pauli
- ReviewScience, 90513 Zirndorf, Fürther Str. 13, Germany
- Author to whom correspondence should be addressed;
| | - Heinz Schilcher
- Heinz Schilcher, 81737 München, Alfred Neumann Anger 17, Germany
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