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Zară-Dănceanu CM, Stavilă C, Minuti AE, Lăbușcă L, Nastasa V, Herea DD, Malancus RN, Ghercă D, Pasca SA, Chiriac H, Mares M, Lupu N. Magnetic Nanoemulsions for the Intra-Articular Delivery of Ascorbic Acid and Dexamethasone. Int J Mol Sci 2023; 24:11916. [PMID: 37569290 PMCID: PMC10419142 DOI: 10.3390/ijms241511916] [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: 07/07/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
(1) Osteoarthritis (OA) is a progressive joint degenerative disease that currently has no cure. Limitations in the development of innovative disease modifying therapies are related to the complexity of the underlying pathogenic mechanisms. In addition, there is the unmet need for efficient drug delivery methods. Magnetic nanoparticles (MNPs) have been proposed as an efficient modality for the delivery of bioactive molecules within OA joints, limiting the side effects associated with systemic delivery. We previously demonstrated MNP's role in increasing cell proliferation and chondrogenesis. In the design of intra-articular therapies for OA, the combined NE-MNP delivery system could provide increased stability and biological effect. (2) Proprietary Fe3O4 MNPs formulated as oil-in-water (O/W) magneto nanoemulsions (MNEs) containing ascorbic acid and dexamethasone were tested for size, stability, magnetic properties, and in vitro biocompatibility with human primary adipose mesenchymal cells (ADSC), cell mobility, and chondrogenesis. In vivo biocompatibility was tested after systemic administration in mice. (3) We report high MNE colloidal stability, magnetic properties, and excellent in vitro and in vivo biocompatibility. By increasing ADSC migration potential and chondrogenesis, MNE carrying dexamethasone and ascorbic acid could reduce OA symptoms while protecting the cartilage layer.
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Affiliation(s)
- Camelia Mihaela Zară-Dănceanu
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania; (C.M.Z.-D.); (C.S.); (H.C.)
| | - Cristina Stavilă
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania; (C.M.Z.-D.); (C.S.); (H.C.)
- Faculty of Physics, Alexandru Ioan Cuza University, 700506 Iaşi, Romania
| | - Anca Emanuela Minuti
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania; (C.M.Z.-D.); (C.S.); (H.C.)
- Faculty of Physics, Alexandru Ioan Cuza University, 700506 Iaşi, Romania
| | - Luminiţa Lăbușcă
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania; (C.M.Z.-D.); (C.S.); (H.C.)
- County Emergency Hospital Saint Spiridon, Orthopedics and Traumatology Clinic, 700111 Iaşi, Romania
| | - Valentin Nastasa
- Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iaşi, Romania (S.-A.P.); (M.M.)
| | - Dumitru-Daniel Herea
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania; (C.M.Z.-D.); (C.S.); (H.C.)
| | - Răzvan-Nicolae Malancus
- Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iaşi, Romania (S.-A.P.); (M.M.)
| | - Daniel Ghercă
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania; (C.M.Z.-D.); (C.S.); (H.C.)
| | - Sorin-Aurelian Pasca
- Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iaşi, Romania (S.-A.P.); (M.M.)
| | - Horia Chiriac
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania; (C.M.Z.-D.); (C.S.); (H.C.)
| | - Mihai Mares
- Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iaşi, Romania (S.-A.P.); (M.M.)
| | - Nicoleta Lupu
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania; (C.M.Z.-D.); (C.S.); (H.C.)
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Zară-Dănceanu CM, Stavilă C, Minuti AE, Lăbușcă L, Nastasa V, Herea DD, Malancus RN, Ghercă D, Pasca SA, Chiriac H, Mares M, Lupu N. Magnetic Nanoemulsions for the Intra-Articular Delivery of Ascorbic Acid and Dexamethasone. Int J Mol Sci 2023; 24:11916. [DOI: doi.org/10.3390/ijms241511916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024] Open
Abstract
(1) Osteoarthritis (OA) is a progressive joint degenerative disease that currently has no cure. Limitations in the development of innovative disease modifying therapies are related to the complexity of the underlying pathogenic mechanisms. In addition, there is the unmet need for efficient drug delivery methods. Magnetic nanoparticles (MNPs) have been proposed as an efficient modality for the delivery of bioactive molecules within OA joints, limiting the side effects associated with systemic delivery. We previously demonstrated MNP’s role in increasing cell proliferation and chondrogenesis. In the design of intra-articular therapies for OA, the combined NE-MNP delivery system could provide increased stability and biological effect. (2) Proprietary Fe3O4 MNPs formulated as oil-in-water (O/W) magneto nanoemulsions (MNEs) containing ascorbic acid and dexamethasone were tested for size, stability, magnetic properties, and in vitro biocompatibility with human primary adipose mesenchymal cells (ADSC), cell mobility, and chondrogenesis. In vivo biocompatibility was tested after systemic administration in mice. (3) We report high MNE colloidal stability, magnetic properties, and excellent in vitro and in vivo biocompatibility. By increasing ADSC migration potential and chondrogenesis, MNE carrying dexamethasone and ascorbic acid could reduce OA symptoms while protecting the cartilage layer.
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Affiliation(s)
- Camelia Mihaela Zară-Dănceanu
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania
| | - Cristina Stavilă
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania
- Faculty of Physics, Alexandru Ioan Cuza University, 700506 Iaşi, Romania
| | - Anca Emanuela Minuti
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania
- Faculty of Physics, Alexandru Ioan Cuza University, 700506 Iaşi, Romania
| | - Luminiţa Lăbușcă
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania
- County Emergency Hospital Saint Spiridon, Orthopedics and Traumatology Clinic, 700111 Iaşi, Romania
| | - Valentin Nastasa
- Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iaşi, Romania
| | - Dumitru-Daniel Herea
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania
| | - Răzvan-Nicolae Malancus
- Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iaşi, Romania
| | - Daniel Ghercă
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania
| | - Sorin-Aurelian Pasca
- Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iaşi, Romania
| | - Horia Chiriac
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania
| | - Mihai Mares
- Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iaşi, Romania
| | - Nicoleta Lupu
- Department of Magnetic Materials and Devices, National Institute of Research and Development for Technical Physics, 700050 Iaşi, Romania
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Grecu M, Minea B, Foia LG, Bostanaru-Iliescu AC, Miron L, Nastasa V, Mares M. Short Review on the Biological Activity of Cyclodextrin-Drug Inclusion Complexes Applicable in Veterinary Therapy. Molecules 2023; 28:5565. [PMID: 37513437 PMCID: PMC10383344 DOI: 10.3390/molecules28145565] [Citation(s) in RCA: 1] [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: 06/21/2023] [Revised: 07/15/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Cyclodextrins (CDs) are a family of carrier molecules used to improve the pharmacokinetic parameters of therapeutic molecules. These cyclic oligosaccharides have medical and pharmaceutical applications by being able to form inclusion complexes with molecules that are poorly soluble in water. The benefits of these complexes are directed towards improving the chemical and biological properties-i.e., solubility, bioavailability, stability, non-toxicity and shelf life of drug molecules. Since the 1960s, the first inclusion complexes used in therapeutics were those with α-, β- and γ-CD, which proved their usefulness, but had certain degrees of particularly renal toxicity. Currently, to correct these deficiencies, β-CD derivatives are most frequently used, such as sulfobutylether-β-CD, hydroxypropyl-β-CD, etc. Therefore, it is of interest to bring to the attention of those interested the diversity of current and potential future clinical applications of inclusion complexes in veterinary medicine and to present the contribution of these inclusion complexes in improving drug efficacy. The most important biological activities of β-CD complexed molecules in the veterinary field are summarized in this short review.
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Affiliation(s)
- Mariana Grecu
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Bogdan Minea
- Department of Surgery, Faculty of Dental Medicine, "Grigore T. Popa" University of Medicine and Pharmacy of Iasi, 16 Universitatii Street, 700115 Iași, Romania
| | - Liliana-Georgeta Foia
- Department of Surgery, Faculty of Dental Medicine, "Grigore T. Popa" University of Medicine and Pharmacy of Iasi, 16 Universitatii Street, 700115 Iași, Romania
| | - Andra-Cristina Bostanaru-Iliescu
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Liviu Miron
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Valentin Nastasa
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Life Sciences of Iasi (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
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Cogliati M, Arikan-Akdagli S, Barac A, Bostanaru AC, Brito S, Çerikçioğlu N, Efstratiou MA, Ergin Ç, Esposto MC, Frenkel M, Gangneux JP, Gitto A, Gonçalves CI, Guegan H, Gunde-Cimerman N, Güran M, Jonikaitė E, Kataržytė M, Klingspor L, Mares M, Meijer WG, Melchers WJG, Meletiadis J, Nastasa V, Babič MN, Ogunc D, Ozhak B, Prigitano A, Ranque S, Romanò L, Rusu RO, Sabino R, Sampaio A, Silva S, Stephens JH, Tehupeiory-Kooreman M, Velegraki A, Veríssimo C, Segal E, Brandão J. Environmental and bioclimatic factors influencing yeasts and molds distribution along European shores. Sci Total Environ 2023; 859:160132. [PMID: 36400291 DOI: 10.1016/j.scitotenv.2022.160132] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/07/2022] [Accepted: 11/07/2022] [Indexed: 06/16/2023]
Abstract
The present study employed data collected during the Mycosands survey to investigate the environmental factors influencing yeasts and molds distribution along European shores applying a species distribution modelling approach. Occurrence data were compared to climatic datasets (temperature, precipitation, and solar radiation), soil datasets (chemical and physical properties), and water datasets (temperature, salinity, and chlorophyll-a concentration) downloaded from web databases. Analyses were performed by MaxEnt software. Results suggested a different probability of distribution of yeasts and molds along European shores. Yeasts seem to tolerate low temperatures better during winter than molds and this reflects a higher suitability for the Northern European coasts. This difference is more evident considering suitability in waters. Both distributions of molds and yeasts are influenced by basic soil pH, probably because acidic soils are more favorable to bacterial growth. Soils with high nitrogen concentrations are not suitable for fungal growth, which, in contrast, are optimal for plant growth, favored by this environment. Finally, molds show affinity with soil rich in nickel and yeasts with soils rich in cadmium resulting in a distribution mainly at the mouths of European rivers or lagoons, where these metals accumulate in river sediments.
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Affiliation(s)
- M Cogliati
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy.
| | - S Arikan-Akdagli
- Mycology Laboratory at Department of Medical Microbiology of Hacettepe University Medical School, Ankara, Turkey
| | - A Barac
- Clinical Centre of Serbia, Clinic for Infectious and Tropical Diseases, Faculty of Medicine, University of Belgrade, Serbia
| | - A C Bostanaru
- Ion Ionescu de la Brad University of Life Sciences, Iasi, Romania
| | - S Brito
- Department of Environmental Health, National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal
| | - N Çerikçioğlu
- Mycology Laboratory at Department of Medical Microbiology of Marmara University Medical School, Istanbul, Turkey
| | - M A Efstratiou
- Department of Marine Sciences, University of the Aegean, University Hill, Mytilene, Greece
| | - Ç Ergin
- Department of Medical Microbiology, Medical Faculty, Pamukkale University, Denizli, Turkey
| | - M C Esposto
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy
| | - M Frenkel
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - J P Gangneux
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - A Gitto
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, and UCD Conway Institute, University College Dublin, Ireland
| | - C I Gonçalves
- Department of Biology and Environment, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - H Guegan
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - N Gunde-Cimerman
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Slovenia
| | - M Güran
- Faculty of Medicine, Eastern Mediterranean University, Famagusta, Northern Cyprus, Mersin, Turkey
| | - E Jonikaitė
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
| | - M Kataržytė
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
| | - L Klingspor
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - M Mares
- Ion Ionescu de la Brad University of Life Sciences, Iasi, Romania
| | - W G Meijer
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, and UCD Conway Institute, University College Dublin, Ireland
| | - W J G Melchers
- Medical Microbiology, Radboud University Medical Centre (Radboudumc), Nijmegen, the Netherlands
| | - J Meletiadis
- Clinical Microbiology Laboratory, Attikon University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - V Nastasa
- Ion Ionescu de la Brad University of Life Sciences, Iasi, Romania
| | - M Novak Babič
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Slovenia
| | - D Ogunc
- Department of Medical Microbiology, Akdeniz University Medical School, Antalya, Turkey
| | - B Ozhak
- Department of Medical Microbiology, Akdeniz University Medical School, Antalya, Turkey
| | - A Prigitano
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy
| | - S Ranque
- Aix Marseille Univ, IHU-Méditerranée Infection, AP-HM, IRD, SSA, VITROME, Marseille, France
| | - L Romanò
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, Italy
| | - R O Rusu
- Ion Ionescu de la Brad University of Life Sciences, Iasi, Romania
| | - R Sabino
- Reference Unit for Parasitic and Fungal Infections, Department of Infectious Diseases, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal; Instituto de Saúde Ambiental, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal
| | - A Sampaio
- Department of Biology and Environment, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal; Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), UTAD, Vila Real, Portugal
| | - S Silva
- Department of Epidemiology, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal
| | - J H Stephens
- UCD School of Biomolecular and Biomedical Science, UCD Earth Institute, and UCD Conway Institute, University College Dublin, Ireland
| | - M Tehupeiory-Kooreman
- Medical Microbiology, Radboud University Medical Centre (Radboudumc), Nijmegen, the Netherlands
| | - A Velegraki
- Mycology Research Laboratory and UOA/HCPF Culture Collection, Microbiology Department, Medical School, National and Kapodistrian University of Athens, Athens, Greece; Mycology Laboratory, BIOMEDICINE S.A., Athens, Greece
| | - C Veríssimo
- Reference Unit for Parasitic and Fungal Infections, Department of Infectious Diseases, National Institute of Health Doutor Ricardo Jorge, Lisbon, Portugal
| | - E Segal
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - J Brandão
- Department of Environmental Health, National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal; Centre for Environmental and Marine Studies (CESAM) - Department of Animal Biology, University of Lisbon, Lisbon, Portugal
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Daraban Bocaneti F, Altamura G, Corteggio A, Tanase OI, Dascalu MA, Pasca SA, Hritcu O, Mares M, Borzacchiello G. Expression of collagenases (matrix metalloproteinase-1, -8, -13) and tissue inhibitor of metalloproteinase-3 (TIMP-3) in naturally occurring bovine cutaneous fibropapillomas. Front Vet Sci 2023; 9:1072672. [PMID: 36713871 PMCID: PMC9878699 DOI: 10.3389/fvets.2022.1072672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 12/28/2022] [Indexed: 01/13/2023] Open
Abstract
Bovine cutaneous fibropapillomas are among the most common skin tumors in cattle; their etiology is associated with infection by bovine papillomavirus (BPV) types-1/-2 which are considered oncogenic. Degradation of the extracellular matrix (ECM), especially collagenolysis, is a key event during a series of relevant physiological processes, including tissue remodeling and repair. Various types of proteins are implicated in the regulation of ECM degradation: among these, matrix metalloproteinases (MMPs), a group of zinc-dependent endoenzymes, and tissue inhibitors of matrix metalloproteinases (TIMPs) are known to play a major role. Previous studies reported that aberrant expression of collagenolytic MMPs (MMP-1/-8/-13) and unbalancing between MMPs and TIMPs represent a critical step in tumor growth and invasion; however, studies regarding this topic in bovine cutaneous fibropapillomas are lacking. The aim of this study was to investigate the expression of the collagenases MMP-1/-8/-13 and TIMP-3 in naturally occurring fibropapillomas harboring BPV-2 DNA and normal skin samples. Here, by immunohistochemistry and western blotting analysis, we demonstrated overexpression of MMP-8/-13 along with a down-regulation of MMP-1, associated with a decrease in TIMP-3 levels in tumor compared with normal skin samples. This is the first study describing MMP-1/-8/-13 and TIMP-3 expression in bovine cutaneous fibropapillomas and our results suggest that an impaired expression of collagenases along with an imbalance between MMPs/TIMPs may contribute to an increased collagenolytic activity, which in turn could be important in ECM changes and tumors development.
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Affiliation(s)
- Florentina Daraban Bocaneti
- Department of Public Health, Faculty of Veterinary Medicine, Iasi University of Life Sciences “Ion Ionescu de la Brad”, Iaşi, Romania,*Correspondence: Florentina Daraban Bocaneti ✉
| | - Gennaro Altamura
- Department of Veterinary Medicine and Animal Productions, University of Naples “Federico II”, Naples, Italy
| | - Annunziata Corteggio
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Naples, Italy
| | - Oana Irina Tanase
- Department of Public Health, Faculty of Veterinary Medicine, Iasi University of Life Sciences “Ion Ionescu de la Brad”, Iaşi, Romania
| | - Mihaela Anca Dascalu
- Department of Public Health, Faculty of Veterinary Medicine, Iasi University of Life Sciences “Ion Ionescu de la Brad”, Iaşi, Romania
| | - Sorin Aurelian Pasca
- Department of Pathology, Faculty of Veterinary Medicine, Iasi University of Life Sciences “Ion Ionescu de la Brad”, Iaşi, Romania
| | - Ozana Hritcu
- Department of Pathology, Faculty of Veterinary Medicine, Iasi University of Life Sciences “Ion Ionescu de la Brad”, Iaşi, Romania
| | - Mihai Mares
- Department of Public Health, Faculty of Veterinary Medicine, Iasi University of Life Sciences “Ion Ionescu de la Brad”, Iaşi, Romania
| | - Giuseppe Borzacchiello
- Department of Veterinary Medicine and Animal Productions, University of Naples “Federico II”, Naples, Italy
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Daraban Bocaneti F, Altamura G, Corteggio A, Tanase OI, Dascalu MA, Pasca SA, Hritcu O, Mares M, Borzacchiello G. Expression of matrix metalloproteinases (MMPs)−2/-7/-9/-14 and tissue inhibitors of MMPs (TIMPs)−1/-2 in bovine cutaneous fibropapillomas associated with BPV-2 infection. Front Vet Sci 2022; 9:1063580. [DOI: 10.3389/fvets.2022.1063580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 11/04/2022] [Indexed: 11/29/2022] Open
Abstract
IntroductionBovine papillomaviruses −1/−2 (BPVs) are small non-enveloped double-stranded DNA viruses able to infect the skin of bovids and equids, causing development of neoplastic lesions such as bovine cutaneous fibropapillomas and equine sarcoid. Matrix metalloproteinases (MMPs) are a group of zinc-dependent endopeptidases that degrade basal membrane and extracellular matrix, whose function is essential in physiological processes such as tissue remodeling and wound healing. MMPs activity is finely regulated by a balancing with expression of tissue inhibitors of MMPs (TIMPs), a process that is impaired during tumour development. BPV infection is associated with upregulation of MMPs and /or their unbalancing with TIMPs, contributing to local invasion and impairment of extracellular matrix remodeling in equine sarcoid; however, studies regarding this topic in bovine fibropapillomas are lacking.MethodsThe aim of this study was to perform an immunohistochemical and biochemical analysis on a panel of MMPs and TIMPs in BPV-2 positive bovine cutaneous fibropapillomas vs. normal skin samples.ResultsImmunohistochemistry revealed a cytoplasmic expression of MMP-2 (15/19), a cytoplasmic and perinuclear immunoreactivity of MMP-7 (19/19) and MMP-9 (19/19), along with a cytoplasmic and nuclear pattern of MMP-14 (16/19), accompanied by a cytoplasmic expression of TIMP-1 (14/19) and TIMP-2 (18/19) in tumour samples; western blotting revealed an overexpression of MMP-2 (8/9), MMP-7 (9/9) and MMP-9 (9/9), and a decreased level of MMP-14 (9/9), TIMP-1 (9/9) and TIMP-2 (9/9) in tumour versus normal skin samples. Moreover, gelatine zymography confirmed the expression of pro-active MMP-2 (9/9) and MMP-9 (9/9) and, most importantly, indicated the presence and increased activity of their active forms (82 and 62 kDa, respectively) in tumour samples.DiscussionThis is the first study describing MMPs and TIMPs in bovine cutaneous fibropapillomas and our results suggest that their unbalanced expression in presence of BPV-2 may play a significant role in tumour development. A further analysis of supplementary MMPs and TIMPs could bring new important insights into the papillomavirus induced tumours.
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Enache AC, Samoila P, Cojocaru C, Bele A, Bostanaru AC, Mares M, Harabagiu V. Amphiphilic Chitosan Porous Membranes as Potential Therapeutic Systems with Analgesic Effect for Burn Care. Membranes (Basel) 2022; 12:973. [PMID: 36295732 PMCID: PMC9611202 DOI: 10.3390/membranes12100973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Eliminating or at least lessening the pain is a crucial aspect of burns management, as pain can negatively affect mental health and quality of life, and it can also induce a delay on wound healing. In this context, new amphiphilic chitosan 3D porous membranes were developed and investigated as burns therapeutic systems with analgesic effect for delivery of lidocaine as local anesthetic. The highly porous morphology of the membranes and the structural modifications were evidenced by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis and infrared spectroscopy (FTIR). Improved compression mechanical properties, long-term hydrolytic degradation (28 days) evaluation and high swelling capacities (ranging from 8 to 22.6 g/g) indicate an increased capacity of the prepared membranes to absorb physiological fluids (burns exudate). Lidocaine in vitro release efficiency was favored by the decreased content of cross-linking agent (reaching maximum value of 95.24%) and the kinetic data modeling, indicating that lidocaine release occurs by quasi-Fickian diffusion. In addition to the in vitro evaluation of analgesic effect, lidocaine-loaded chitosan membranes were successfully investigated and proved antibacterial activity against most common pathogens in burns infections: Staphylococcus aureus and Methicillin-resistant Staphylococcus aureus.
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Affiliation(s)
- Andra-Cristina Enache
- Laboratory of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Petrisor Samoila
- Laboratory of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Corneliu Cojocaru
- Laboratory of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Adrian Bele
- Laboratory of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
| | - Andra-Cristina Bostanaru
- Laboratory of Antimicrobial Chemotherapy, “Ion Ionescu de la Brad” University of Life Sciences, 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, “Ion Ionescu de la Brad” University of Life Sciences, 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Valeria Harabagiu
- Laboratory of Inorganic Polymers, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
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Bostanaru AC, Nastasa V, Pavlov-Enescu C, Hnatiuc E, Mares M. P034 Non-conventional alternatives to prevent Candida auris infections. Med Mycol 2022. [PMCID: PMC9515923 DOI: 10.1093/mmy/myac072.p034] [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] [Indexed: 11/13/2022] Open
Abstract
Abstract
Poster session 1, September 21, 2022, 12:30 PM - 1:30 PM
Objectives
Candida auris represents a particular organism associated with multiple nosocomial infections and high mortality rates. Appropriate infection control measures play a major role in controlling the spread and multiplication of this pathogen. Unfortunately, there are very few data available on the effectiveness of disinfectants against C. auris. Chlorine-based products appear to be the most effective for inanimate surface disinfection, while iodine-based products are more suitable for skin antisepsis. C. auris has been demonstrated to survive on dry and moist surfaces for up to 14 days, so environmental cleaning to eliminate a source of nosocomial infections is a challenge. Thus, searching for new effective fungicidal agents is still a hot topic nowadays. Non-thermal plasma-activated water (PAW) has recently emerged as a powerful antimicrobial agent, but no data about its effectiveness on C. auris are available. The aim of our study was to assess the possibility of using PAW as a fungicidal agent against C. auris planktonic cells.
Methods
PAW was prepared using distilled water and a GlidArc reactor as previously described1. The final parameters of PAW were as follows: conductivity 446 ± 25 μS/cm, pH 2.78 ± 0.12, redox potential (ORP) + 1.06 V, NO2 192 ± 10 mg/L, NO3 1550 ± 95 mg/L, H2O2 2.6 ± 0.12 mg/L, and O3 1.08 ± 0.07 mg/L.
A type strain of C. auris (CBS 10913) was used in this study. Suspensions of yeast cells (107 CFU/ml) were prepared from overnight cultures and subsequently treated with PAW in a ratio of 1:10 for different periods of time (1, 3, 5, 7, 10, 15, and 20 minutes). Precise volumes of the mixtures were further inoculated on Sabouraud Dextrose Agar plates and Bact/Alert FA Plus bottles (bioMerieux, France) in order to evaluate the reduction of yeast burden after each contact period. In addition, some instrumental analysis (IA) methods were used in order to assess the impact of PAW treatment on yeast cell structure: Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), Fourier Transform Infrared Spectrometry (FT-IR), and Dynamic Light Scattering (DLS). All tests were performed in triplicates.
Results
A reduction higher than 5 log10 of viable yeast was achieved in 3 minutes. The sterilization level (i.e., ˃6 log10 reduction) was achieved after 5 minutes for the tested strain. IA clearly objectified the morphological changes in the treated yeasts compared with the untreated ones (Figs. 1 and 2).
Conclusion
Our research has successfully demonstrated the fungicidal effect of PAW against C. auris, opening a new field of research in the area of disinfectants.
1. Valentin Nastasa, Aurelian-Sorin Pasca, Razvan-Nicolae Malancus, Andra-Cristina Bostanaru, Luminita-Iuliana Ailincai, Elena-Laura Ursu, Ana-Lavinia Vasiliu, Bogdan Minea, Eugen Hnatiuc, Mihai Mares, [2021] - Toxicity Assessment of Long-Term Exposure to Non-Thermal Plasma Activated Water in Mice, Int. J. Mol. Sci., 22(21), 11 534; https://doi.org/10.3390/ijms222111534.
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Affiliation(s)
| | | | | | | | - Mihai Mares
- Iasi University of Life Sciences , IASI , Romania
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9
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Man A, Mare AD, Mares M, Ruta F, Pribac M, Maier AC, Cighir A, Ciurea CN. Antifungal and anti-virulence activity of six essential oils against important Candida species - a preliminary study. Future Microbiol 2022; 17:737-753. [PMID: 35531749 DOI: 10.2217/fmb-2021-0296] [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: 11/21/2022] Open
Abstract
Opportunistic infections with Candida species are becoming more problematic, considering their increasing virulence and resistance to antifungal drugs. AIM To assess the antifungal and anti-virulence activity of basil, cinnamon, clove, melaleuca, oregano and thyme essential oils (EOs) on five Candida species (C. albicans, C. auris, C. krusei C. parapsilosis and C. guillermondii). METHODS The MIC, growth rate, antibiofilm activity, regulation of gene expression (ALS3, SAP2, HSP70) and germ-tube formation were evaluated by specific methods. RESULTS Most EOs inhibited Candida species growth and reduced the expression of some virulence factors. Cinnamon and clove EO showed the most significant inhibitory effects. CONCLUSIONS The tested EOs are promising agents for facilitating the management of some Candida infections.
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Affiliation(s)
- Adrian Man
- Department of Microbiology, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, Târgu Mureș, 540142, Romania
| | - Anca-Delia Mare
- Department of Microbiology, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, Târgu Mureș, 540142, Romania
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Ion Ionescu de la Brad University of Life Sciences of Iași, Iași, 700490, Romania
| | - Florina Ruta
- Department of Community Nutrition & Food Safety, George Emil Palade University of Medicine, Pharmacy, Science, & Technology of Târgu Mureș, Târgu Mureș, 540142, Romania
| | - Mirela Pribac
- Nutrition & Holistic Health, Holomed, Târgu Mureș, 540272, Romania
| | - Adrian-Cornel Maier
- Department of Urology, "Dunarea de Jos" University of Galați, Galați, 800008, Romania
| | - Anca Cighir
- Department of Microbiology, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, Târgu Mureș, 540142, Romania.,Doctoral School, George Emil Palade University of Medicine, Pharmacy, Science, & Technology of Târgu Mureș, Târgu Mureș, 540142, Romania
| | - Cristina-Nicoleta Ciurea
- Department of Microbiology, George Emil Palade University of Medicine, Pharmacy, Science, and Technology of Târgu Mureș, Târgu Mureș, 540142, Romania.,Doctoral School, George Emil Palade University of Medicine, Pharmacy, Science, & Technology of Târgu Mureș, Târgu Mureș, 540142, Romania
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10
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Driemeyer C, Falci DR, Hoenigl M, Cornely OA, Chakrabarti A, Gangneux JP, Segal E, Jürna-Ellam M, Matos T, Meis JF, Perfect JR, Arsenijevic VA, Mares M, Serban DE, Pasqualotto AC. The current state of Clinical Mycology in Eastern and South-Eastern Europe. Med Mycol 2022; 60:6534912. [PMID: 35195256 DOI: 10.1093/mmy/myac017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/13/2021] [Revised: 02/17/2022] [Accepted: 02/21/2022] [Indexed: 02/07/2023] Open
Abstract
UNLABELLED The ability of medical centers in Eastern and South-Eastern Europe to diagnose and treat fungal infections remains unknown. In order to investigate that, here we conducted a cross-sectional online survey, released at both The International Society for Human & Animal Mycology (ISHAM) and European Confederation of Medical Mycology (ECMM) websites. A total of 31 institutions responded to the questionnaire. Most centers (87.1%, n = 27) had access to Aspergillus spp. ELISA galactomannan testing as well as to Cryptococcus spp. antigen testing (83.9%, n = 26). Serological tests were mostly available for Aspergillus species (80.6%, n = 25); and most institutions reported access to mold-active antifungal drugs (83.9%; n = 26), but 5-flucytosine was available to only 29% (n = 9) of the participant centers. In conclusion, this study represents the first attempt to document the strengths and limitations of the Eastern and South-Eastern European region for diagnosing and treating fungal diseases. LAY SUMMARY Our article is about the availability of diagnostic and treatments tools related to fungal infections in the countries of Eastern and South-Eastern region. Surveys like these are important to understand the gaps and point towards the fungal infections as a global health issue.
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Affiliation(s)
- Cândida Driemeyer
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil
- Molecular Biology Laboratory, Santa Casa de Misericordia de Porto Alegre, Porto Alegre, Brazil
| | - Diego R Falci
- School of Medicine, Pontificia Universidade Catolica do Rio Grande do Sul, Porto Alegre, Brazil
| | - Martin Hoenigl
- Division of Infectious Diseases, Department of Medicine, Medical University of Graz, Graz, Austria; Division of Infectious Diseases and Global Public Health, University of California San Diego, San Diego, CA, USA
| | - Oliver A Cornely
- Department I of Internal Medicine, Excellence Center for Medical Mycology (ECMM), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Chair Translational Research, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany; University of Cologne, Faculty of Medicine and University Hospital Cologne, Clinical Trials Centre Cologne (ZKS Köln), Cologne, Germany; German Centre for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany
| | - Arunaloke Chakrabarti
- Center of Advanced Research in Medical Mycology, WHO Collaborating Center for Reference & Research on Fungi of Medical Importance, National Culture Collection of Pathogenic Fungi; Department of Medical Microbiology, Postgraduate Institute of Medical Education & Research Chandigarh 160012, India
| | - Jean Pierre Gangneux
- CHU de Rennes, University of Rennes, INSERM, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, Rennes, France
| | - Esther Segal
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel-Aviv University
| | - Marika Jürna-Ellam
- Microbiology Department, Laboratory, Diagnostics Division, North Estonia Medical Centre, Tallinn, Estonia
| | - Tadeja Matos
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Slovenia
| | - Jacques F Meis
- Department of Medical Microbiology and Infectious Diseases and Centre of Expertise in Mycology Radboudumc/Canisius Wilhelmina Hospital, ECMM Excellence Centre, Nijmegen, the Netherlands
| | - John R Perfect
- Division of Infectious Diseases, Department of Medicine, Duke University School of Medicine, Durham, NC, USA
| | - Valentina Arsic Arsenijevic
- Faculty of Medicine University of Belgrade, Institute of Microbiology and Immunology, Medical Mycology Reference Laboratory (MMRL), dr Subotica Sreet No 1, 11000 Belgrade, Serbia
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, "Ion Ionescu de la Brad" University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania
| | - Daniela Elena Serban
- 2nd Clinic of Pediatrics, "Iuliu Hatieganu" University of Medicine and Pharmacy, Emergency Clinical Hospital for Children, Cluj-Napoca, Romania
| | - Alessandro C Pasqualotto
- Graduate Program in Pathology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil
- Molecular Biology Laboratory, Santa Casa de Misericordia de Porto Alegre, Porto Alegre, Brazil
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Bocaneti Daraban F, Dascalu A, Tanase O, Pasca S, Mares M. Expression of Matrix Metalloproteinase-1 and its Tissue Inhibitor in Bovine Fibropapilloma. J Comp Pathol 2022. [DOI: 10.1016/j.jcpa.2021.11.096] [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: 11/28/2022]
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12
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Marincu I, Citu C, Vidican I, Bratosin F, Mares M, Suciu O, Frent S, Bota AV, Timircan M, Bratu ML, Grigoras ML. Clinical Profile of 24 AIDS Patients with Cryptococcal Meningitis in the HAART Era: A Report from an Infectious Diseases Tertiary Hospital in Western Romania. Diagnostics (Basel) 2021; 12:diagnostics12010054. [PMID: 35054221 PMCID: PMC8774555 DOI: 10.3390/diagnostics12010054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 12/02/2022] Open
Abstract
Management of cryptococcal infections among patients suffering from acquired immunodeficiency syndrome (AIDS) represents a medical challenge. This retrospective study aims to describe the disease management and outcomes among 24 AIDS patients who suffered from Cryptococcus neoformans meningitis. The parameters evaluated from our patients’ database records include epidemiological data, clinical manifestations, biochemical and microbiological analysis of patients’ cerebrospinal fluid (CSF), treatment profiles, and disease outcomes. All patients included in the study had a lymphocyte count of less than 200 CD4/mm3. Of the 24 patients included in this study, five had been diagnosed with HIV infection since childhood, after receiving HIV-infected blood transfusions. The most prominent symptom was fatigue in 62.5% of patients, followed by nausea/vomiting and headache. Seven patients had liver cirrhosis due to hepatitis B virus (HBV) or hepatitis C virus (HCV) infection, while Kaposi sarcoma and cerebral toxoplasmosis were found in two patients. Six out of 24 patients died due to bacterial sepsis and acute respiratory distress syndrome (ARDS). High intracranial pressure was the strongest predictive factor for mortality (OR = 2.9), followed by ARDS (OR = 1.8), seizures at disease onset (OR = 1.4), and diabetes mellitus (OR = 1.2). Interestingly, patients younger than 40 years old had a significantly lower survival rate than that of the older patients. Before developing Cryptococcal meningitis, all patients had low adherence to the early ART treatment scheme and skipped the follow-up visits. All patients received a combination of amphotericin B and flucytosine as induction therapy, adding fluconazole for maintenance. Simultaneously, AIDS HAART was initiated at diagnosis of the cryptococcal infection. A combined regimen of antifungals and highly active antiretroviral therapy showed improved patient recovery with minor side effects.
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Affiliation(s)
- Iosif Marincu
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
| | - Cosmin Citu
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
- Correspondence: ; Tel.: +40-722-322-877
| | - Iulia Vidican
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
| | - Felix Bratosin
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
| | - Mihai Mares
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
| | - Oana Suciu
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
| | - Stefan Frent
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
| | - Adrian Vasile Bota
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
| | - Madalina Timircan
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
| | - Melania Lavinia Bratu
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
- Department of Psychology, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania
| | - Mirela Loredana Grigoras
- Methodological and Infectious Diseases Research Center, Department of Infectious Diseases, “Victor Babes” University of Medicine and Pharmacy, 300041 Timisoara, Romania; (I.M.); (I.V.); (F.B.); (M.M.); (O.S.); (S.F.); (A.V.B.); (M.T.); (M.L.B.); (M.L.G.)
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Burduniuc O, Bostanaru AC, Mares M, Biliuta G, Coseri S. Synthesis, Characterization, and Antifungal Activity of Silver Nanoparticles Embedded in Pullulan Matrices. Materials (Basel) 2021; 14:ma14227041. [PMID: 34832441 PMCID: PMC8622049 DOI: 10.3390/ma14227041] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/14/2021] [Accepted: 11/16/2021] [Indexed: 01/03/2023]
Abstract
Steady developments made in nanotechnology-based products have facilitated new perspectives for combating drug-resistant fungi. Silver nanoparticles represent one of the most attractive nanomaterials in biomedicine due to their exclusive optical, electromagnetic, and catalytic properties and antifungal potency compared with other metal nanoparticles. Most studies show that the physicochemical parameters affecting the antifungal potential of AgNPs include the shape, size, surface charge, and concentration and colloidal state. For the present study, pullulan (P) and its oxidized counterpart (PO) have been selected as matrices for the silver nanoparticles’ generation and stabilization (AgNPs). The TEMPO (2,2,6,6-tetramethylpiperidin-1-yl radical)–sodium hypochlorite–sodium bromide system was used for the C6 selective oxidation of pullulan in order to introduce negatively charged carboxylic groups in its structure. The structure and morphology of the synthesized AgNPs were analyzed using FTIR and EDX. The main objective of this study was to elucidate the antifungal activity of AgNPs on the clinical yeasts isolates and compare the performance of AgNPs with the conventional antifungals. In this study, different concentrations of AgNPs were tested to examine antifungal activity on various clinical isolates.
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Affiliation(s)
- Olga Burduniuc
- Department of Microbiology, Virusology and Immunology, “Nicolae Testemitanu” State University of Medicine and Pharmacy, 165, Stefan cel Mare blvd., MD 2001 Chisinau, Moldova
- National Public Health Agency, 67A Gheorghe Asachi, MD 2028 Chisinau, Moldova
- Correspondence: (O.B.); (M.M.); (G.B.); (S.C.)
| | - Andra-Cristina Bostanaru
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania;
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania;
- Correspondence: (O.B.); (M.M.); (G.B.); (S.C.)
| | - Gabriela Biliuta
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
- Correspondence: (O.B.); (M.M.); (G.B.); (S.C.)
| | - Sergiu Coseri
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, Romania
- Correspondence: (O.B.); (M.M.); (G.B.); (S.C.)
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14
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Nastasa V, Pasca AS, Malancus RN, Bostanaru AC, Ailincai LI, Ursu EL, Vasiliu AL, Minea B, Hnatiuc E, Mares M. Toxicity Assessment of Long-Term Exposure to Non-Thermal Plasma Activated Water in Mice. Int J Mol Sci 2021; 22:ijms222111534. [PMID: 34768973 PMCID: PMC8583710 DOI: 10.3390/ijms222111534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/07/2021] [Accepted: 10/22/2021] [Indexed: 01/17/2023] Open
Abstract
Non-thermal plasma activated water (PAW) has recently emerged as a powerful antimicrobial agent. Despite numerous potential bio-medical applications, studies concerning toxicity in live animals, especially after long-term exposure, are scarce. Our study aimed to assess the effects of long-term watering with PAW on the health of CD1 mice. PAW was prepared from distilled water with a GlidArc reactor according to a previously published protocol. The pH was 2.78. The mice received PAW (experimental group) or tap water (control group) daily for 90 days as the sole water source. After 90 days, the following investigations were performed on the euthanatized animals: gross necropsy, teeth mineral composition, histopathology, immunohistochemistry, hematology, blood biochemistry, methemoglobin level and cytokine profile. Mice tolerated PAW very well and no adverse effects were observed during the entire period of the experiment. Histopathological examination of the organs and tissues did not reveal any structural changes. Moreover, the expression of proliferation markers PCNA and Ki67 has not been identified in the epithelium of the upper digestive tract, indicating the absence of any pre- or neoplastic transformations. The results of our study demonstrated that long-term exposure to PAW caused no toxic effects and could be used as oral antiseptic solution in dental medicine.
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Affiliation(s)
- Valentin Nastasa
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (A.-S.P.); (R.-N.M.); (A.-C.B.); (L.-I.A.); (E.H.); (M.M.)
| | - Aurelian-Sorin Pasca
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (A.-S.P.); (R.-N.M.); (A.-C.B.); (L.-I.A.); (E.H.); (M.M.)
| | - Razvan-Nicolae Malancus
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (A.-S.P.); (R.-N.M.); (A.-C.B.); (L.-I.A.); (E.H.); (M.M.)
| | - Andra-Cristina Bostanaru
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (A.-S.P.); (R.-N.M.); (A.-C.B.); (L.-I.A.); (E.H.); (M.M.)
| | - Luminita-Iuliana Ailincai
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (A.-S.P.); (R.-N.M.); (A.-C.B.); (L.-I.A.); (E.H.); (M.M.)
| | - Elena-Laura Ursu
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Aleea Grigore Ghica-Voda, 700487 Iasi, Romania; (E.-L.U.); (A.-L.V.)
| | - Ana-Lavinia Vasiliu
- “Petru Poni” Institute of Macromolecular Chemistry, 41A Aleea Grigore Ghica-Voda, 700487 Iasi, Romania; (E.-L.U.); (A.-L.V.)
| | - Bogdan Minea
- Department of Surgery, Faculty of Dental Medicine, “Grigore T. Popa” University of Medicine and Pharmacy of Iasi, 16 Universitatii Street, 700115 Iași, Romania
- Correspondence:
| | - Eugen Hnatiuc
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (A.-S.P.); (R.-N.M.); (A.-C.B.); (L.-I.A.); (E.H.); (M.M.)
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, “Ion Ionescu de la Brad” University of Life Sciences (IULS), 8 Mihail Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (A.-S.P.); (R.-N.M.); (A.-C.B.); (L.-I.A.); (E.H.); (M.M.)
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Brandão J, Gangneux JP, Arikan-Akdagli S, Barac A, Bostanaru AC, Brito S, Bull M, Çerikçioğlu N, Chapman B, Efstratiou MA, Ergin Ç, Frenkel M, Gitto A, Gonçalves CI, Guégan H, Gunde-Cimerman N, Güran M, Irinyi L, Jonikaitė E, Kataržytė M, Klingspor L, Mares M, Meijer WG, Melchers WJG, Meletiadis J, Meyer W, Nastasa V, Babič MN, Ogunc D, Ozhak B, Prigitano A, Ranque S, Rusu RO, Sabino R, Sampaio A, Silva S, Stephens JH, Tehupeiory-Kooreman M, Tortorano AM, Velegraki A, Veríssimo C, Wunderlich GC, Segal E. Mycosands: Fungal diversity and abundance in beach sand and recreational waters - Relevance to human health. Sci Total Environ 2021; 781:146598. [PMID: 33812107 DOI: 10.1016/j.scitotenv.2021.146598] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
The goal of most studies published on sand contaminants is to gather and discuss knowledge to avoid faecal contamination of water by run-offs and tide-retractions. Other life forms in the sand, however, are seldom studied but always pointed out as relevant. The Mycosands initiative was created to generate data on fungi in beach sands and waters, of both coastal and freshwater inland bathing sites. A team of medical mycologists and water quality specialists explored the sand culturable mycobiota of 91 bathing sites, and water of 67 of these, spanning from the Atlantic to the Eastern Mediterranean coasts, including the Italian lakes and the Adriatic, Baltic, and Black Seas. Sydney (Australia) was also included in the study. Thirteen countries took part in the initiative. The present study considered several fungal parameters (all fungi, several species of the genus Aspergillus and Candida and the genera themselves, plus other yeasts, allergenic fungi, dematiaceous fungi and dermatophytes). The study considered four variables that the team expected would influence the results of the analytical parameters, such as coast or inland location, urban and non-urban sites, period of the year, geographical proximity and type of sediment. The genera most frequently found were Aspergillus spp., Candida spp., Fusarium spp. and Cryptococcus spp. both in sand and in water. A site-blind median was found to be 89 Colony-Forming Units (CFU) of fungi per gram of sand in coastal and inland freshwaters, with variability between 0 and 6400 CFU/g. For freshwater sites, that number was 201.7 CFU/g (0, 6400 CFU/g (p = 0.01)) and for coastal sites was 76.7 CFU/g (0, 3497.5 CFU/g). For coastal waters and all waters, the median was 0 CFU/ml (0, 1592 CFU/ml) and for freshwaters 6.7 (0, 310.0) CFU/ml (p < 0.001). The results advocate that beaches should be monitored for fungi for safer use and better management.
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Affiliation(s)
- J Brandão
- Department of Environmental Health, National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal; Centre for Environmental and Marine Studies (CESAM) - Department of Animal Biology, University of Lisbon, Lisbon, Portugal.
| | - J P Gangneux
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - S Arikan-Akdagli
- Mycology Laboratory at Department of Medical Microbiology of Hacettepe University Medical School, Ankara, Turkey
| | - A Barac
- Clinical Centre of Serbia, Clinic for Infectious and Tropical Diseases, Faculty of Medicine, University of Belgrade, Serbia
| | - A C Bostanaru
- Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine of Iasi, Romania
| | - S Brito
- Department of Environmental Health, National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal
| | - M Bull
- Quantal Bioscience, North Parramatta, Australia
| | - N Çerikçioğlu
- Mycology Laboratory at Department of Medical Microbiology of Marmara University Medical School, Istanbul, Turkey
| | - B Chapman
- Quantal Bioscience, North Parramatta, Australia
| | - M A Efstratiou
- Department of Marine Sciences, University of the Aegean, University Hill, Mytilene, Greece
| | - Ç Ergin
- Department of Medical Microbiology, Medical Faculty, Pamukkale University, Denizli, Turkey
| | - M Frenkel
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - A Gitto
- UCD School of Biomolecular and Biomedical Science, University College Dublin, Ireland; UCD Earth Institute, University College Dublin, Ireland; UCD Conway Institute, University College Dublin, Ireland
| | - C I Gonçalves
- Department of Biology and Environment, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - H Guégan
- Univ Rennes, CHU Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - N Gunde-Cimerman
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Slovenia
| | - M Güran
- Faculty of Medicine, Eastern Mediterranean University, Famagusta, Northern Cyprus, Mersin 10, Turkey
| | - L Irinyi
- Molecular Mycology Research Laboratory, Centre for Infectious Disease and Microbiology, Sydney Medical School, Westmead Clinical School, Westmead Hospital, Marie Bashir Institute for Emerging Infectious Diseases and Biosecurity, Westmead Institute for Medical Research, The University of Sydney, Westmead, Australia
| | - E Jonikaitė
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
| | - M Kataržytė
- Marine Research Institute, Klaipėda University, Klaipėda, Lithuania
| | - L Klingspor
- Division of Clinical Microbiology, Department of Laboratory Medicin, Karolinska Institutet, Stockholm, Sweden
| | - M Mares
- Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine of Iasi, Romania
| | - W G Meijer
- UCD School of Biomolecular and Biomedical Science, University College Dublin, Ireland; UCD Earth Institute, University College Dublin, Ireland; UCD Conway Institute, University College Dublin, Ireland
| | - W J G Melchers
- Medical Microbiology, Radboud University Medical Centre (Radboudumc), Nijmegen, the Netherlands
| | - J Meletiadis
- Clinical Microbiology Laboratory, Attikon University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - W Meyer
- Molecular Mycology Research Laboratory, Centre for Infectious Disease and Microbiology, Sydney Medical School, Westmead Clinical School, Westmead Hospital, Marie Bashir Institute for Emerging Infectious Diseases and Biosecurity, Westmead Institute for Medical Research, The University of Sydney, Westmead, Australia
| | - V Nastasa
- Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine of Iasi, Romania
| | - M Novak Babič
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Slovenia
| | - D Ogunc
- Department of Medical Microbiology, Akdeniz University Medical School, Antalya, Turkey
| | - B Ozhak
- Department of Medical Microbiology, Akdeniz University Medical School, Antalya, Turkey
| | - A Prigitano
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
| | - S Ranque
- Aix Marseille Univ, IHU-Méditerranée Infection, AP-HM, IRD, SSA, VITROME, Marseille, France
| | - R O Rusu
- Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine of Iasi, Romania
| | - R Sabino
- Reference Unit for Parasitic and Fungal Infections, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal
| | - A Sampaio
- Department of Biology and Environment, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal; Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), UTAD, Vila Real, Portugal
| | - S Silva
- Department of Epidemiology, National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal
| | - J H Stephens
- UCD School of Biomolecular and Biomedical Science, University College Dublin, Ireland; UCD Earth Institute, University College Dublin, Ireland; UCD Conway Institute, University College Dublin, Ireland
| | - M Tehupeiory-Kooreman
- Medical Microbiology, Radboud University Medical Centre (Radboudumc), Nijmegen, the Netherlands
| | - A M Tortorano
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
| | - A Velegraki
- Mycology Research Laboratory and UOA/HCPF Culture Collection, Microbiology Department, Medical School, National and Kapodistrian University of Athens, Athens, Greece and Mycology Laboratory, BIOMEDICINE S.A., Athens, Greece
| | - C Veríssimo
- Reference Unit for Parasitic and Fungal Infections, Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge, Lisbon, Portugal
| | - G C Wunderlich
- Quantal Bioscience, North Parramatta, Australia; Molecular Mycology Research Laboratory, Centre for Infectious Disease and Microbiology, Sydney Medical School, Westmead Clinical School, Westmead Hospital, Marie Bashir Institute for Emerging Infectious Diseases and Biosecurity, Westmead Institute for Medical Research, The University of Sydney, Westmead, Australia
| | - E Segal
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Chiriac A, Birsan C, Mares M, Wollina U. [Kerion Celsi due to Microsporum canis infection]. Hautarzt 2021; 72:855-859. [PMID: 33884438 DOI: 10.1007/s00105-021-04817-1] [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] [Accepted: 03/24/2021] [Indexed: 11/26/2022]
Abstract
Tinea capitis is seen world-wide among children up to 12 years. The most severe type is Kerion Celsi with painful abscesses and lymphadenopathy. We report on an 11-year-old boy with Kerion Celsi, who was initially treated using antibiotics under the common misdiagnosis of a bacterial infection. Mycological investigations could identify Microsporum canis. The patient was treated orally with griseofulvin, which resulted in complete mycological remission after 8 weeks. Cicatrical alopecia, however, could not be prevented. Purulent infections of the scalp should lead to early mycological diagnostics in children.
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Affiliation(s)
- A Chiriac
- Department of Dermatology, Nicolina Medical Center, Iași, Rumänien
- Department of Dermatology, Apollonia University, Iași, Rumänien
- P. Poni Institute of Macromolecular Chemistry, Romanian Academy, Iași, Rumänien
| | - C Birsan
- Department of Dermatology, Apollonia University, Iași, Rumänien
| | - M Mares
- Laboratory of Antimicrobial Chemotherapy, Ion Ionescu de la Brad University, Iași, Rumänien
| | - Uwe Wollina
- Klinik für Dermatologie und Allergologie, Städtisches Klinikum Dresden, Friedrichstr. 41, 01067, Dresden, Deutschland.
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Arendrup MC, Friberg N, Mares M, Kahlmeter G, Meletiadis J, Guinea J. How to interpret MICs of antifungal compounds according to the revised clinical breakpoints v. 10.0 European committee on antimicrobial susceptibility testing (EUCAST). Clin Microbiol Infect 2020; 26:1464-1472. [PMID: 32562861 DOI: 10.1016/j.cmi.2020.06.007] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [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: 04/24/2020] [Revised: 05/29/2020] [Accepted: 06/06/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND EUCAST has revised the definition of the susceptibility category I from 'Intermediate' to 'Susceptible, Increased exposure'. This implies that I can be used where the drug concentration at the site of infection is high, either because of dose escalation or through other means to ensure efficacy. Consequently, I is no longer used as a buffer zone to prevent technical factors from causing misclassifications and discrepancies in interpretations. Instead, an Area of Technical Uncertainty (ATU) has been introduced for MICs that cannot be categorized without additional information as a warning to the laboratory that decision on how to act has to be made. To implement these changes, the EUCAST-AFST (Subcommittee on Antifungal Susceptibility Testing) reviewed all, and revised some, clinical antifungal breakpoints. OBJECTIVES The aim was to present an overview of the current antifungal breakpoints and supporting evidence behind the changes. SOURCES This document is based on the ten recently updated EUCAST rationale documents, clinical breakpoint and breakpoint ECOFF documents. CONTENT The following breakpoints (in mg/L) have been revised or established for Candida species: micafungin against C. albicans (ATU = 0.03); amphotericin B (S ≤/> R = 1/1), fluconazole (S ≤/> R = 2/4), itraconazole (S ≤/> R = 0.06/0.06), posaconazole (S ≤/> R = 0.06/0.06) and voriconazole (S ≤/> R = 0.06/0.25) against C. dubliniensis; fluconazole against C. glabrata (S ≤/> R = 0.001/16); and anidulafungin (S ≤/> R = 4/4) and micafungin (S ≤/> R = 2/2) against C. parapsilosis. For Aspergillus, new or revised breakpoints include itraconazole (ATU = 2) and isavuconazole against A. flavus (S ≤/> R = 1/2, ATU = 2); amphotericin B (S ≤/> R = 1/1), isavuconazole (S ≤ /> R = 1/2, ATU = 2), itraconazole (S ≤/> R = 1/1, ATU = 2), posaconazole (ATU = 0.25) and voriconazole (S ≤/> R = 1/1, ATU = 2) against A. fumigatus; itraconazole (S ≤/> R = 1/1, ATU = 2) and voriconazole (S ≤/> R = 1/1, ATU = 2) against A. nidulans; amphotericin B against A. niger (S ≤/> R = 1/1); and itraconazole (S ≤/> R = 1/1, ATU = 2) and posaconazole (ATU = 0.25) against A. terreus. IMPLICATIONS EUCAST-AFST has released ten new documents summarizing existing and new breakpoints and MIC ranges for control strains. A failure to adopt the breakpoint changes may lead to misclassifications and suboptimal or inappropriate therapy of patients with fungal infections.
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Affiliation(s)
- M C Arendrup
- Unit of Mycology, Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark; Department of Clinical Microbiology, University Hospital Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.
| | - N Friberg
- Division of Clinical Microbiology, Helsinki University Hospital, HUSLAB, Finland
| | - M Mares
- Laboratory of Antimicrobial Chemotherapy, Ion Ionescu de la Brad University, Iasi, Romania
| | - G Kahlmeter
- The EUCAST Development Laboratory, Clinical Microbiology, Växjö, Sweden
| | - J Meletiadis
- Clinical Microbiology Laboratory, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece; Department of Medical Microbiology and Infectious Diseases, Erasmus MC, Rotterdam, the Netherlands
| | - J Guinea
- Clinical Microbiology and Infectious Diseases Department, Hospital General Universitario Gregorio Marañón, Madrid, Spain; CIBER de enfermedades Respiratorias-CIBERES (CB06/06/0058), Madrid, Spain; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain
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Arsić Arsenijevic V, Vyzantiadis TA, Mares M, Otasevic S, Tragiannidis A, Janic D. Diagnosis of Pneumocystis jirovecii Pneumonia in Pediatric Patients in Serbia, Greece, and Romania. Current Status and Challenges for Collaboration. J Fungi (Basel) 2020; 6:jof6020049. [PMID: 32316676 PMCID: PMC7345889 DOI: 10.3390/jof6020049] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 12/27/2022] Open
Abstract
Pneumocystis jirovecii can cause fatal Pneumocystis pneumonia (PcP). Many children have been exposed to the fungus and are colonized in early age, while some individuals at high risk for fungal infections may develop PcP, a disease that is difficult to diagnose. Insufficient laboratory availability, lack of knowledge, and local epidemiology gaps make the problem more serious. Traditionally, the diagnosis is based on microscopic visualization of Pneumocystis in respiratory specimens. The molecular diagnosis is important but not widely used. The aim of this study was to collect initial indicative data from Serbia, Greece, and Romania concerning pediatric patients with suspected PcP in order to: find the key underlying diseases, determine current clinical and laboratory practices, and try to propose an integrative future molecular perspective based on regional collaboration. Data were collected by the search of literature and the use of an online questionnaire, filled by relevant scientists specialized in the field. All three countries presented similar clinical practices in terms of PcP prophylaxis and clinical suspicion. In Serbia and Greece the hematology/oncology diseases are the main risks, while in Romania HIV infection is an additional risk. Molecular diagnosis is available only in Greece. PcP seems to be under-diagnosed and regional collaboration in the field of laboratory diagnosis with an emphasis on molecular approaches may help to cover the gaps and improve the practices.
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Affiliation(s)
- Valentina Arsić Arsenijevic
- National Reference Laboratory for Medical Mycology, Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
- Correspondence: ; Tel.: +381-63-327-564
| | - Timoleon-Achilleas Vyzantiadis
- First Department of Microbiology, School of Medicine, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece;
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Ion Ionescu de la Brad University, 700490 Iasi, Romania;
| | - Suzana Otasevic
- Department of Microbiology & Public Health Institute Clinical Center of Nis, Faculty of Medicine, University of Nis, 18000 Nis, Serbia;
| | - Athanasios Tragiannidis
- Haematology Oncology Unit, Second Department of Pediatrics, School of Medicine, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece;
| | - Dragana Janic
- Institute for Oncology and Radiology of Serbia, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia;
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Mandalian T, Coprean D, Hritcu O, Hritcu L, Morosan S, Mares M, Pasca A. Evaluation of Kojic Acid Acute Toxicity in Adult Zebrafish (Danio rerio). J Comp Pathol 2020. [DOI: 10.1016/j.jcpa.2019.10.056] [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: 11/27/2022]
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20
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Cornely OA, Alastruey-Izquierdo A, Arenz D, Chen SCA, Dannaoui E, Hochhegger B, Hoenigl M, Jensen HE, Lagrou K, Lewis RE, Mellinghoff SC, Mer M, Pana ZD, Seidel D, Sheppard DC, Wahba R, Akova M, Alanio A, Al-Hatmi AMS, Arikan-Akdagli S, Badali H, Ben-Ami R, Bonifaz A, Bretagne S, Castagnola E, Chayakulkeeree M, Colombo AL, Corzo-León DE, Drgona L, Groll AH, Guinea J, Heussel CP, Ibrahim AS, Kanj SS, Klimko N, Lackner M, Lamoth F, Lanternier F, Lass-Floerl C, Lee DG, Lehrnbecher T, Lmimouni BE, Mares M, Maschmeyer G, Meis JF, Meletiadis J, Morrissey CO, Nucci M, Oladele R, Pagano L, Pasqualotto A, Patel A, Racil Z, Richardson M, Roilides E, Ruhnke M, Seyedmousavi S, Sidharthan N, Singh N, Sinko J, Skiada A, Slavin M, Soman R, Spellberg B, Steinbach W, Tan BH, Ullmann AJ, Vehreschild JJ, Vehreschild MJGT, Walsh TJ, White PL, Wiederhold NP, Zaoutis T, Chakrabarti A. Global guideline for the diagnosis and management of mucormycosis: an initiative of the European Confederation of Medical Mycology in cooperation with the Mycoses Study Group Education and Research Consortium. Lancet Infect Dis 2019; 19:e405-e421. [PMID: 31699664 PMCID: PMC8559573 DOI: 10.1016/s1473-3099(19)30312-3] [Citation(s) in RCA: 796] [Impact Index Per Article: 159.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 04/10/2019] [Accepted: 06/05/2019] [Indexed: 12/20/2022]
Abstract
Mucormycosis is a difficult to diagnose rare disease with high morbidity and mortality. Diagnosis is often delayed, and disease tends to progress rapidly. Urgent surgical and medical intervention is lifesaving. Guidance on the complex multidisciplinary management has potential to improve prognosis, but approaches differ between health-care settings. From January, 2018, authors from 33 countries in all United Nations regions analysed the published evidence on mucormycosis management and provided consensus recommendations addressing differences between the regions of the world as part of the "One World One Guideline" initiative of the European Confederation of Medical Mycology (ECMM). Diagnostic management does not differ greatly between world regions. Upon suspicion of mucormycosis appropriate imaging is strongly recommended to document extent of disease and is followed by strongly recommended surgical intervention. First-line treatment with high-dose liposomal amphotericin B is strongly recommended, while intravenous isavuconazole and intravenous or delayed release tablet posaconazole are recommended with moderate strength. Both triazoles are strongly recommended salvage treatments. Amphotericin B deoxycholate is recommended against, because of substantial toxicity, but may be the only option in resource limited settings. Management of mucormycosis depends on recognising disease patterns and on early diagnosis. Limited availability of contemporary treatments burdens patients in low and middle income settings. Areas of uncertainty were identified and future research directions specified.
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Affiliation(s)
- Oliver A Cornely
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany; German Centre for Infection Research (DZIF) partner site Bonn-Cologne, Cologne, Germany; CECAD Cluster of Excellence, University of Cologne, Cologne, Germany; Clinical Trials Center Cologne, University Hospital of Cologne, Cologne, Germany.
| | - Ana Alastruey-Izquierdo
- Mycology Reference Laboratory, National Centre for Microbiology, Instituto de Salud Carlos III, Madrid, Spain
| | - Dorothee Arenz
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany; CECAD Cluster of Excellence, University of Cologne, Cologne, Germany
| | - Sharon C A Chen
- Centre for Infectious Diseases and Microbiology Laboratory Services, New South Wales Health Pathology, and the Department of Infectious Diseases, Westmead Hospital, School of Medicine, University of Sydney, Sydney, NSW, Australia
| | - Eric Dannaoui
- Université Paris-Descartes, Faculté de Médecine, APHP, Hôpital Européen Georges Pompidou, Unité de Parasitologie-Mycologie, Service de Microbiologie, Paris, France
| | - Bruno Hochhegger
- Radiology, Hospital São Lucas da Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS), Escola de Medicina, Porto Alegre, Brazil; Radiology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, Brazil
| | - Martin Hoenigl
- Section of Infectious Diseases and Tropical Medicine and Division of Pulmonology, Medical University of Graz, Graz, Austria; Division of Infectious Diseases and Global Public Health, Department of Medicine, University of California San Diego, San Diego, USA
| | - Henrik E Jensen
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Katrien Lagrou
- Department of Microbiology, Immunology and Transplantation, KU Leuven and Clinical Department of Laboratory Medicine and National Reference Center for Mycosis, University Hospitals Leuven, Leuven, Belgium
| | - Russell E Lewis
- Infectious Diseases Clinic, Sant'Orsola-Malpighi Hospital, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Sibylle C Mellinghoff
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany; CECAD Cluster of Excellence, University of Cologne, Cologne, Germany
| | - Mervyn Mer
- Divisions of Critical Care and Pulmonology, Department of Medicine, Charlotte Maxeke Johannesburg Academic Hospital and Faculty of Health Sciences University of the Witwatersrand, Johannesburg, South Africa
| | - Zoi D Pana
- Infectious Diseases Unit, 3rd Department of Paediatrics, Faculty of Medicine, Aristotle University School of Health Sciences, Thessaloniki, Greece; Hippokration General Hospital, Thessaloniki, Greece
| | - Danila Seidel
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany; CECAD Cluster of Excellence, University of Cologne, Cologne, Germany
| | - Donald C Sheppard
- Division of Infectious Diseases, Department of Medicine, Microbiology and Immunology, McGill University, Montreal, Quebec, Canada
| | - Roger Wahba
- Department of General, Visceral and Cancer Surgery, University Hospital of Cologne, Cologne, Germany
| | - Murat Akova
- Department of Infectious Diseases, Hacettepe University School of Medicine, Ankara, Turkey
| | - Alexandre Alanio
- Institut Pasteur, National Reference Center for Invasive Mycoses and Antifungals, Department of Mycology, CNRS UMR2000, Parasitology-Mycology Laboratory, Lariboisière, Saint-Louis, Fernand Widal Hospitals, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Abdullah M S Al-Hatmi
- Westerdijk Fungal Biodiversity Institute, Utrecht, The Netherlands; Centre of Expertise in Mycology RadboudUMC/Canisius Wilhelmina Hospital, Nijmegen, The Netherlands; Ministry of Health, Directorate General of Health Services, Ibri, Oman
| | - Sevtap Arikan-Akdagli
- Department of Medical Microbiology, Hacettepe University School of Medicine, Sıhhiye Ankara, Turkey
| | - Hamid Badali
- Department of Medical Mycology/Invasive Fungi Research Center (IFRC), School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ronen Ben-Ami
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Infectious Diseases Unit, Tel Aviv Medical Center, Tel- Aviv, Israel
| | - Alexandro Bonifaz
- Dermatology Service & Mycology Department, Hospital General de México "Dr. Eduardo Liceaga", Mexico City, Mexico
| | - Stéphane Bretagne
- Institut Pasteur, National Reference Center for Invasive Mycoses and Antifungals, Department of Mycology, CNRS UMR2000, Parasitology-Mycology Laboratory, Lariboisière, Saint-Louis, Fernand Widal Hospitals, Assistance Publique-Hôpitaux de Paris (AP-HP), Université de Paris, Paris, France
| | - Elio Castagnola
- Infectious Diseases Unit, Istituto Giannina Gaslini Children's Hospital, Genoa, Italy
| | - Methee Chayakulkeeree
- Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Arnaldo L Colombo
- Special Mycology Laboratory, Division of Infectious Diseases, Department of Medicine, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Dora E Corzo-León
- Department of Epidemiology and Infectious Diseases, Hospital General Dr Manuel Gea González, Mexico City, Mexico; Medical Mycology and Fungal Immunology/Wellcome Trust Strategic Award Program, Aberdeen Fungal Group, University of Aberdeen, King's College, Aberdeen, UK
| | - Lubos Drgona
- Oncohematology Clinic, Faculty of Medicine, Comenius University and National Cancer Institute, Bratislava, Slovakia
| | - Andreas H Groll
- InfectiousDisease Research Program, Department of Paediatric Hematology/Oncology and Center for Bone Marrow Transplantation, University Children's Hospital Münster, Münster, Germany
| | - Jesus Guinea
- Clinical Microbiology and Infectious Diseases, Hospital General Universitario Gregorio Marañón, Madrid, Spain; Instituto de Investigación v Sanitaria Gregorio Marañón, Madrid, Spain; Medicine Department, School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Claus-Peter Heussel
- Diagnostic and Interventional Radiology, Thoracic Clinic, University Hospital Heidelberg, Heidelberg, Germany
| | - Ashraf S Ibrahim
- Division of Infectious Diseases, Los Angeles Biomedical Research Institute at Harbor-University of California at Los Angeles (UCLA) Medical Center, Torrance, CA, USA
| | - Souha S Kanj
- Department of Internal Medicine, Division of Infectious Diseases, American University of Beirut Medical Center, Beirut, Lebanon
| | - Nikolay Klimko
- Department of Clinical Mycology, Allergology and Immunology, North Western State Medical University, St Petersburg, Russia
| | - Michaela Lackner
- Division of Hygiene and Medical Microbiology, Department of Hygiene, Microbiology and Public Health, Medical University Innsbruck, Innsbruck, Austria
| | - Frederic Lamoth
- Infectious Diseases Service, Department of Medicine and Institute of Microbiology, Lausanne University Hospital, Lausanne, Switzerland; Institute of Microbiology, Department of Laboratories, Lausanne University Hospital, Lausanne, Switzerland
| | - Fanny Lanternier
- Institut Pasteur, National Reference Center for Invasive Mycoses and Antifungals, Department of Mycology, Paris Descartes University, Necker-Enfants Malades University Hospital, Department of Infectious Diseases and Tropical Medicine, Centre d'Infectiologie Necker-Pasteur, Institut Imagine, AP-HP, Paris, France
| | - Cornelia Lass-Floerl
- Division of Hygiene and Medical Microbiology, Department of Hygiene, Microbiology and Public Health, Medical University Innsbruck, Innsbruck, Austria
| | - Dong-Gun Lee
- Division of Infectious Diseases, Department of Internal Medicine, Catholic Hematology Hospital, College of Medicine, The Catholic University of Korea, Seocho-gu, Seoul, Korea
| | - Thomas Lehrnbecher
- Division of Paediatric Haematology and Oncology, Hospital for Children and Adolescents, Johann Wolfgang Goethe-University, Frankfurt, Germany
| | - Badre E Lmimouni
- School of Medicine and Pharmacy, University Mohammed the fifth, Hay Riad, Rabat, Morocco
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Ion Ionescu de la Brad University, Iaşi, Romania
| | - Georg Maschmeyer
- Department of Hematology, Oncology and Palliative Care, Klinikum Ernst von Bergmann, Potsdam, Germany
| | - Jacques F Meis
- Department of Medical Microbiology and Infectious Diseases, Centre of Expertise in Mycology Radboudumc/Canisius Wilhelmina Hospital, Nijmegen, Netherlands
| | - Joseph Meletiadis
- Clinical Microbiology Laboratory, Attikon University Hospital, National and Kapodistrian University of Athens, Athens, Greece; Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Center, Rotterdam, The Netherlands
| | - C Orla Morrissey
- Department of Infectious Diseases, Alfred Health & Monash University, Melbourne, Australia
| | - Marcio Nucci
- Department of Internal Medicine, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rita Oladele
- Department of Medical Microbiology & Parasitology, College of Medicine, University of Lagos, Yaba, Lagos, Nigeria; Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Livio Pagano
- Department of Hematology, Fondazione Policlinico Universitario A. Gemelli -IRCCS- Universita Cattolica del Sacro Cuore, Roma, Italy
| | - Alessandro Pasqualotto
- Federal University of Health Sciences of Porto Alegre, Hospital Dom Vicente Scherer, Porto Alegre, Brazil
| | - Atul Patel
- Infectious Diseases Clinic, Vedanta Institute of Medical Sciences, Navarangpura, Ahmeddabad, India
| | - Zdenek Racil
- Institute of Hematology and Blood Transfusion, Prague, Czech Republic
| | - Malcolm Richardson
- UK NHS Mycology Reference Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Emmanuel Roilides
- Infectious Diseases Unit, 3rd Department of Paediatrics, Faculty of Medicine, Aristotle University School of Health Sciences, Thessaloniki, Greece; Hippokration General Hospital, Thessaloniki, Greece
| | - Markus Ruhnke
- Hämatologie & Internistische Onkologie, Lukas-Krankenhaus Bünde, Onkologische Ambulanz, Bünde, Germany
| | - Seyedmojtaba Seyedmousavi
- Department of Medical Mycology/Invasive Fungi Research Center (IFRC), School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; Center of Expertise in Microbiology, Infection Biology and Antimicrobial Pharmacology, Tehran, Iran; Molecular Microbiology Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Neeraj Sidharthan
- Department of Hemato Oncology, Amrita Institute of Medical Sciences, Amrita Viswa Vidyapeetham University, Kochi, India
| | - Nina Singh
- Division of Infectious Diseases, University of Pittsburgh Medical Center and VA Pittsburgh Healthcare System, Infectious Diseases Section, University of Pittsburgh, Pittsburgh, PA, USA
| | - János Sinko
- Infectious Diseases Unit, Szent Istvan and Szent Laszlo Hospital, Budapest, Hungary
| | - Anna Skiada
- Department of Infectious Diseases, Laiko General Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Monica Slavin
- University of Melbourne, Melbourne, VIC, Australia; The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Parkville, Melbourne, VIC, Australia
| | - Rajeev Soman
- P D Hinduja Hospital & Medical Research Centre, Department of Medicine, Veer Sarvarkar Marg, Mumbai, India
| | - Brad Spellberg
- Los Angeles County and University of Southern California (LAC+USC) Medical Center, Los Angeles, CA, USA
| | - William Steinbach
- Division of Pediatric Infectious Diseases, Department of Pediatrics, Duke University Medical Center, Durham, NC, USA
| | - Ban Hock Tan
- Department of Infectious Diseases, Singapore General Hospital, Singapur, Singapore
| | - Andrew J Ullmann
- Department for Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Jörg J Vehreschild
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany; German Centre for Infection Research (DZIF) partner site Bonn-Cologne, Cologne, Germany; Department of Internal Medicine, Hematology/Oncology, Goethe University Frankfurt, Frankfurt, Germany
| | - Maria J G T Vehreschild
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany; German Centre for Infection Research (DZIF) partner site Bonn-Cologne, Cologne, Germany; Department of Internal Medicine, Infectious Diseases, Goethe University Frankfurt, Frankfurt, Germany
| | - Thomas J Walsh
- Departments of Medicine, Pediatrics, Microbiology & Immunology, Weill Cornell Medicine, and New York Presbyterian Hospital, New York City, NY, USA
| | - P Lewis White
- Public Health Wales Microbiology Cardiff, UHW, Heath Park, Cardiff, UK
| | - Nathan P Wiederhold
- Fungus Testing Laboratory, University of Texas Health Science Center, San Antonio, TX, USA
| | - Theoklis Zaoutis
- Division of Infectious Diseases, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Arunaloke Chakrabarti
- Department of Medical Microbiology, Postgraduate Institute of Medical Education & Research, Chandigarh, India
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Turin-Moleavin IA, Fifere A, Lungoci AL, Rosca I, Coroaba A, Peptanariu D, Nastasa V, Pasca SA, Bostanaru AC, Mares M, Pinteala M. In Vitro and In Vivo Antioxidant Activity of the New Magnetic-Cerium Oxide Nanoconjugates. Nanomaterials (Basel) 2019; 9:E1565. [PMID: 31690040 PMCID: PMC6915648 DOI: 10.3390/nano9111565] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 10/21/2019] [Accepted: 11/01/2019] [Indexed: 01/21/2023]
Abstract
BACKGROUND Cerium oxide nanoparticles present the mimetic activity of superoxide dismutase, being able to inactivate the excess of reactive oxygen species (ROS) correlated with a large number of pathologies, such as stents restenosis and the occurrence of genetic mutations that can cause cancer. This study presents the synthesis and biological characterisation of nanoconjugates based on nanoparticles of iron oxide interconnected with cerium oxide conjugates. METHODS The synthesis of magnetite-nanoceria nanoconjugates has been done in several stages, where the key to the process is the coating of nanoparticles with polyethyleneimine and its chemical activation-reticulation with glutaraldehyde. The nanoconjugates are characterised by several techniques, and the antioxidant activity was evaluated in vitro and in vivo. RESULTS Iron oxide nanoparticles interconnected with cerium oxide nanoparticles were obtained, having an average diameter of 8 nm. Nanoconjugates prove to possess superparamagnetic properties and the saturation magnetisation varies with the addition of diamagnetic components in the system, remaining within the limits of biomedical applications. In vitro free-radical scavenging properties of nanoceria are improved after the coating of nanoparticles with polyethylenimine and conjugation with magnetite nanoparticles. In vivo studies reveal increased antioxidant activity in all organs and fluids collected from mice, which demonstrates the ability of the nanoconjugates to reduce oxidative stress. CONCLUSION Nanoconjugates possess magnetic properties, being able to scavenge free radicals, reducing the oxidative stress. The combination of the two properties mentioned above makes them excellent candidates for theranostic applications.
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Affiliation(s)
- Ioana-Andreea Turin-Moleavin
- Centre of Advanced Research in Bionanoconjugates and Biopolymers Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica-Voda Alley, 700487 Iasi, Romania; (I.-A.T.-M.); (A.-L.L.); (I.R.); (A.C.); (D.P.)
| | - Adrian Fifere
- Centre of Advanced Research in Bionanoconjugates and Biopolymers Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica-Voda Alley, 700487 Iasi, Romania; (I.-A.T.-M.); (A.-L.L.); (I.R.); (A.C.); (D.P.)
| | - Ana-Lacramioara Lungoci
- Centre of Advanced Research in Bionanoconjugates and Biopolymers Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica-Voda Alley, 700487 Iasi, Romania; (I.-A.T.-M.); (A.-L.L.); (I.R.); (A.C.); (D.P.)
| | - Irina Rosca
- Centre of Advanced Research in Bionanoconjugates and Biopolymers Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica-Voda Alley, 700487 Iasi, Romania; (I.-A.T.-M.); (A.-L.L.); (I.R.); (A.C.); (D.P.)
| | - Adina Coroaba
- Centre of Advanced Research in Bionanoconjugates and Biopolymers Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica-Voda Alley, 700487 Iasi, Romania; (I.-A.T.-M.); (A.-L.L.); (I.R.); (A.C.); (D.P.)
| | - Dragos Peptanariu
- Centre of Advanced Research in Bionanoconjugates and Biopolymers Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica-Voda Alley, 700487 Iasi, Romania; (I.-A.T.-M.); (A.-L.L.); (I.R.); (A.C.); (D.P.)
| | - Valentin Nastasa
- Laboratory of Antimicrobial Chemotherapy, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, 8 Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (S.-A.P.); (A.-C.B.); (M.M.)
| | - Sorin-Aurelian Pasca
- Laboratory of Antimicrobial Chemotherapy, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, 8 Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (S.-A.P.); (A.-C.B.); (M.M.)
| | - Andra-Cristina Bostanaru
- Laboratory of Antimicrobial Chemotherapy, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, 8 Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (S.-A.P.); (A.-C.B.); (M.M.)
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, 8 Sadoveanu Alley, 700489 Iasi, Romania; (V.N.); (S.-A.P.); (A.-C.B.); (M.M.)
| | - Mariana Pinteala
- Centre of Advanced Research in Bionanoconjugates and Biopolymers Department, “Petru Poni” Institute of Macromolecular Chemistry, 41A Grigore Ghica-Voda Alley, 700487 Iasi, Romania; (I.-A.T.-M.); (A.-L.L.); (I.R.); (A.C.); (D.P.)
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22
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Koehler P, Arendrup MC, Arikan-Akdagli S, Bassetti M, Bretagne S, Klingspor L, Lagrou K, Meis JF, Rautemaa-Richardson R, Schelenz S, Hamprecht A, Koehler FC, Kurzai O, Salmanton-García J, Vehreschild JJ, Alanio A, Alastruey-Izquierdo A, Arsenijevic VA, Gangneux JP, Gow NAR, Hadina S, Hamal P, Johnson E, Klimko N, Lass-Flörl C, Mares M, Özenci V, Papp T, Roilides E, Sabino R, Segal E, Fe Talento A, Tortorano AM, Verweij PE, Hoenigl M, Cornely OA. ECMM CandiReg-A ready to use platform for outbreaks and epidemiological studies. Mycoses 2019; 62:920-927. [PMID: 31271702 PMCID: PMC7614793 DOI: 10.1111/myc.12963] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 05/24/2019] [Accepted: 06/28/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND Recent outbreaks of Candida auris further exemplify that invasive Candida infections are a substantial threat to patients and healthcare systems. Even short treatment delays are associated with higher mortality rates. Epidemiological shifts towards more resistant Candida spp. require careful surveillance. OBJECTIVES Triggered by the emergence of C auris and by increasing antifungal resistance rates the European Confederation of Medical Mycology developed an international Candida Registry (FungiScope™ CandiReg) to allow contemporary multinational surveillance. METHODS CandiReg serves as platform for international cooperation to enhance research regarding invasive Candida infections. CandiReg uses the General Data Protection Regulation compliant data platform ClinicalSurveys.net that holds the electronic case report forms (eCRF). Data entry is supported via an interactive macro created by the software that can be accessed via any Internet browser. RESULTS CandiReg provides an eCRF for invasive Candida infections that can be used for a variety of studies from cohort studies on attributable mortality to evaluations of guideline adherence, offering to the investigators of the 28 ECMM member countries the opportunity to document their cases of invasive Candida infection. CandiReg allows the monitoring of epidemiology of invasive Candida infections, including monitoring of multinational outbreaks. Here, we describe the structure and management of the CandiReg platform. CONCLUSION CandiReg supports the collection of clinical information and isolates to improve the knowledge on epidemiology and eventually to improve management of invasive Candida infections. CandiReg promotes international collaboration, improving the availability and quality of evidence on invasive Candida infection and contributes to improved patient management.
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Affiliation(s)
- Philipp Koehler
- Faculty of Medicine, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf (CIO ABCD), Excellence Center for Medical Mycology (ECMM), University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Maiken Cavling Arendrup
- Unit of Mycology, Statens Serum Institute, Copenhagen, Denmark
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Copenhagen University, Copenhagen, Denmark
| | - Sevtap Arikan-Akdagli
- Department of Medical Microbiology, Hacettepe University School of Medicine, Ankara, Turkey
| | - Matteo Bassetti
- Department of Medicine, Infectious Diseases Clinic, University of Udine and Azienda Sanitaria Universitaria Integrata di Udine, Udine, Italy
| | - Stéphane Bretagne
- Parasitology-Mycology Laboratory, Lariboisière Saint-Louis Fernand Widal Hospitals, Assistance Publique-Hôpitaux de Paris (APHP), Molecular Mycology Unit, CNRS, UMR2000, Institut Pasteur, Université de Paris, Paris, France
| | - Lena Klingspor
- Department of Laboratory Medicine, Clinical Microbiology, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Katrien Lagrou
- Laboratory of Clinical Bacteriology and Mycology, Department of Microbiology, Immunology and Transplantation, Excellence Center for Medical Mycology (ECMM), KU Leuven, Leuven, Belgium
- Department of Laboratory Medicine and National Reference Center for Mycosis, Excellence Center for Medical Mycology (ECMM), University Hospitals Leuven, Leuven, Belgium
| | - Jacques F. Meis
- Department of Medical Microbiology and Infectious Diseases, Excellence Center for Medical Mycology (ECMM), Center of Expertise in Mycology Radboudumc/CWZ, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - Riina Rautemaa-Richardson
- Department of Infectious Diseases and Mycology Reference Centre Manchester, Manchester University NHS Foundation Trust, Manchester, UK
- Division of Infection, Immunity and Respiratory Medicine, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Silke Schelenz
- Department of Microbiology, Royal Brompton Hospital, London, UK
| | - Axel Hamprecht
- Institute for Medical Microbiology, Immunology and Hygiene, University Hospital of Cologne, Cologne, Germany
| | - Felix C. Koehler
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Faculty of Medicine, Department II of Internal Medicine, Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Oliver Kurzai
- National Reference Center for Invasive Fungal Infections, Leibniz Institute for Natural Product Research and Infection Biology - Hans Knoell Institute, Jena, Germany
- Institute for Hygiene and Microbiology, Julius Maximilians University of Wuerzburg, Wuerzburg, Germany
| | - Jon Salmanton-García
- Faculty of Medicine, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf (CIO ABCD), Excellence Center for Medical Mycology (ECMM), University of Cologne, Cologne, Germany
| | - Jörg-Janne Vehreschild
- Faculty of Medicine, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf (CIO ABCD), Excellence Center for Medical Mycology (ECMM), University of Cologne, Cologne, Germany
- Center for Internal Medicine, Hematology and Oncology, University Hospital of Frankfurt, Goethe University, Frankfurt, Germany
- German Centre for Infection Research, Partner Site Bonn-Cologne, Cologne, Germany
| | - Alexandre Alanio
- Parasitology-Mycology Laboratory, Lariboisière Saint-Louis Fernand Widal Hospitals, Assistance Publique-Hôpitaux de Paris (APHP), Molecular Mycology Unit, CNRS, UMR2000, Institut Pasteur, Université de Paris, Paris, France
| | | | - Valentina Arsic Arsenijevic
- National Reference Medical Mycology Laboratory, Faculty of Medicine, Institute of Microbiology and Immunology, University of Belgrade, Belgrade, Serbia
| | - Jean-Pierre Gangneux
- Institut de Recherche en Santé, Environnement et travail, Inserm, CHU de Rennes, EHESP, UMR_ S 1085, Université de Rennes, Rennes, France
| | | | - Suzana Hadina
- Department of Microbiology and Infectious Diseases with Clinic, Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Petr Hamal
- Department of Microbiology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czechia
- University Hospital Olomouc, Olomouc, Czechia
| | - Elizabeth Johnson
- Public Health England Mycology Reference Laboratory, National Infection Services, PHE South West Laboratory, Science Quarter, Southmead Hospital, Southmead, Bristol, UK
| | - Nikolay Klimko
- Department of Clinical Mycology, Allergy and Immunology, North Western State Medical University, Saint Petersburg, Russia
| | - Cornelia Lass-Flörl
- Division of Hygiene and Medical Microbiology, Excellence Center for Medical Mycology (ECMM), Medical University of Innsbruck, Innsbruck, Austria
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Ion lonescu de la Brad University, Iaşi, Romania
| | - Volkan Özenci
- Department of Clinical Microbiology, Karolinska University Hospital, Stockholm, Sweden
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Tamas Papp
- MTA-SZTE Fungal Pathogenicity Mechanisms Research Group, Department of Microbiology, University of Szeged, Hungary
| | - Emmanuel Roilides
- Infectious Diseases Unit, 3rd Department of Pediatrics, Faculty of Medicine, Hippokration General Hospital, Aristotle University School of Health Sciences, Thessaloniki, Greece
| | - Raquel Sabino
- Department of Infectious Diseases, Nacional Institute of Health Dr. Ricardo Jorge - Reference Unit for Parasitic and Fungal Infections, Lisbon, Portugal
| | - Esther Segal
- Department of Clinical Microbiology and Immunology, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alida Fe Talento
- Department of Clinical Microbiology, Royal College of Surgeons Ireland, Dublin, Ireland
- Microbiology Department, Our Lady of Lourdes Hospital, Drogheda, Ireland
- Department of Microbiology, Beaumont Hospital, Dublin 9, Ireland
| | - Anna Maria Tortorano
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milan, Italy
| | - Paul E. Verweij
- Department of Medical Microbiology, Excellence Center for Medical Mycology (ECMM), Center of Expertise in Mycology Radboudumc/CWZ, Nijmegen, The Netherlands
| | - Martin Hoenigl
- Section of Infectious Diseases and Tropical Medicine, Medical University of Graz, Graz, Austria
- Division of Infectious Diseases, Department of Medicine, UCSD, San Diego, California
| | - Oliver A. Cornely
- Faculty of Medicine, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Dusseldorf (CIO ABCD), Excellence Center for Medical Mycology (ECMM), University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- German Centre for Infection Research, Partner Site Bonn-Cologne, Cologne, Germany
- Clinical Trials Centre Cologne (ZKS Köln), University of Cologne, Cologne, Germany
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Pérez-Hansen A, Lass-Flörl C, Lackner M, Aigner M, Alastruey-Izquierdo A, Arikan-Akdagli S, Bader O, Becker K, Boekhout T, Buzina W, Cornely OA, Hamal P, Kidd SE, Kurzai O, Lagrou K, Lopes Colombo A, Mares M, Masoud H, Meis JF, Oliveri S, Rodloff AC, Orth-Höller D, Guerrero-Lozano I, Sanguinetti M, Segal E, Taj-Aldeen SJ, Tortorano AM, Trovato L, Walther G, Willinger B. Antifungal susceptibility profiles of rare ascomycetous yeasts. J Antimicrob Chemother 2019; 74:2649-2656. [DOI: 10.1093/jac/dkz231] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 04/30/2019] [Accepted: 05/04/2019] [Indexed: 12/21/2022] Open
Abstract
AbstractObjectivesTo generate antifungal susceptibility patterns for Trichomonascus ciferrii (Candida ciferrii), Candida inconspicua (Torulopsis inconspicua) and Diutina rugosa species complex (Candida rugosa species complex), and to provide key parameters such as MIC50, MIC90 and tentative epidemiological cut-off values (TECOFFs).MethodsOur strain set included isolates of clinical origin: C. inconspicua (n = 168), D. rugosa species complex (n = 90) [Candida pararugosa (n = 60), D. rugosa (n = 26) and Candida mesorugosa (n = 4)], Pichia norvegensis (Candida norvegensis) (n = 15) and T. ciferrii (n = 8). Identification was performed by MALDI-TOF MS or internal transcribed spacer sequencing. Antifungal susceptibility patterns were generated for azoles, echinocandins and amphotericin B using commercial Etest and the EUCAST broth microdilution method v7.3.1. Essential agreement (EA) was calculated for Etest and EUCAST.ResultsC. inconspicua, C. pararugosa and P. norvegensis showed elevated azole MICs (MIC50 ≥0.06 mg/L), and D. rugosa and C. pararugosa elevated echinocandin MICs (MIC50 ≥0.06 mg/L). EA between methods was generally low (<90%); EA averaged 77.45%. TECOFFs were suggested for C. inconspicua and D. rugosa species complex.ConclusionsRare yeast species tested shared high fluconazole MICs. D. rugosa species complex displayed high echinocandin MICs, while C. inconspicua and P. norvegensis were found to have high azole MICs. Overall, the agreement between EUCAST and Etest was poor and therefore MIC values generated with Etest cannot be directly compared with EUCAST results.
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Affiliation(s)
- Antonio Pérez-Hansen
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Schöpfstraße 41, Innsbruck, Austria
| | - Cornelia Lass-Flörl
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Schöpfstraße 41, Innsbruck, Austria
| | - Michaela Lackner
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Schöpfstraße 41, Innsbruck, Austria
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24
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Musteata M, Mocanu D, Sindilar E, Mares M, Moraru RF, Pacurar RN, Pavel G, Solcan G, Purdoiu RC, Lacatus R. Severe Case of Methicillin-resistant Staphylococcus aureus Discospondylitis in a Doberman. Rev Chim 2019. [DOI: 10.37358/rc.19.5.7231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A 6-year-old, neutered female Doberman Pinscher was presented with acute progressive paraparesis consistent with T3-L3 myelopathy. For 5 months prior to the admission, the dog had multiple recurrent hyperthermic episodes treated with antibiotics and intermittent corticosteroids for a Borrelia and Ehrlichia co-infection. On survey radiographs and CT of the spine, severe osteoproliferative changes were extensively seen throughout the thoracolumbar vertebral column, and were suggestive of discospondylitis. After cytological and microbiological examinations of the vertebral aspirate a severe Staphylococcus aureus methicillin-resistant discospondylitis was established as a final diagnosis. This is the first case report of discospondylitis due to MRSA in dog without vertebral spine surgery. Treatment with corticosteroids can cover the evolution of discospondylitis until the condition became severe and untreatable.
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25
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Mares M, Minea B, Nastasa V, Rosca I, Bostanaru AC, Marincu I, Toma V, Cristea VC, Murariu C, Pinteala M. In vitro activity of echinocandins against 562 clinical yeast isolates from a Romanian multicentre study. Med Mycol 2019; 56:442-451. [PMID: 28992116 DOI: 10.1093/mmy/myx059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 07/13/2017] [Indexed: 12/11/2022] Open
Abstract
The study presents the echinocandin susceptibility profile of a multi-centre collection of pathogenic yeast isolates from Romanian tertiary hospitals. The 562 isolates were identified using ID32C strips, MALDI-TOF MS and DNA sequencing. Minimal inhibitory concentrations (MICs) of caspofungin (CAS), micafungin (MCA), and anidulafungin (ANI) were assessed and interpreted according to EUCAST guidelines. Minimal fungicidal concentrations (MFC) were determined by plating content from the clear MIC wells. The activity was considered fungicidal at MFC/MIC ≤ 4. The three echinocandins had strongly correlated MICs and high percentages of MIC essential agreement. Most often, MCA had the lowest MICs, followed by CAS and ANI. Against C. parapsilosis and C. kefyr, CAS had the lowest MIC values. The MIC50 values were between 0.03 and 0.25 mg/l, except C. parapsilosis. The MIC90 values were usually one dilution higher. MFCs and MICs were weakly correlated. ANI and MCA had the lowest MFC values. The MFC50 values were between 0.06 and 0.5 mg/l, except C. parapsilosis, C. guilliermondii, and C. dubliniensis. The MFC90 values were usually two dilutions higher. Based on EUCAST breakpoints, 47 isolates (8.4%) were resistant to at least one echinocandin, most often ANI. Most resistant isolates were of C. albicans, C. glabrata, and C. krusei. There were 17 isolates (3%) resistant to echinocandins and fluconazole and most belonged to the same three species. MCA and ANI had the highest rates of fungicidal activity. The high rates of echinocandin resistance and significant multidrug resistance make prophylaxis and empiric therapy difficult.
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Affiliation(s)
- Mihai Mares
- "Ion Ionescu de la Brad" University, Laboratory of Antimicrobial Chemotherapy, 700489 Iasi, Romania.,Romanian Society of Medical Mycology and Mycotoxicology, Romanian Study Group for Antifungals, 700063, Iasi
| | - Bogdan Minea
- "Gr. T. Popa" University of Medicine and Pharmacy, Faculty of Dental Medicine, Surgical Department, 700115 Iasi, Romania
| | - Valentin Nastasa
- "Ion Ionescu de la Brad" University, Laboratory of Antimicrobial Chemotherapy, 700489 Iasi, Romania
| | - Irina Rosca
- Institute of Macromolecular Chemistry "Petru Poni", Advanced Research Centre for Bionanoconjugates and Biopolymers, 700487 Iasi, Romania
| | - Andra-Cristina Bostanaru
- "Ion Ionescu de la Brad" University, Laboratory of Antimicrobial Chemotherapy, 700489 Iasi, Romania
| | - Iosif Marincu
- "Victor Babes" University of Medicine and Pharmacy, Department of Infectious Diseases, 300041 Timisoara, Romania
| | - Vasilica Toma
- "Gr. T. Popa" University of Medicine and Pharmacy, Faculty of Dental Medicine, Surgical Department, 700115 Iasi, Romania
| | - Violeta Corina Cristea
- Synevo Central Reference Laboratory, 077040 Chiajna, Romania.,"Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania
| | - Carmen Murariu
- "Marie S. Curie" Clinical Emergency Hospital for Children, 041451 Bucharest, Romania
| | - Mariana Pinteala
- Institute of Macromolecular Chemistry "Petru Poni", Advanced Research Centre for Bionanoconjugates and Biopolymers, 700487 Iasi, Romania
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Lupu AC, Bostanaru AC, Mares M, Ursu L, Roman C, Mindru R, Miron LD. Ultrastructural Aspects of Yersinia ruckeri Cells after Treatment with Non-thermal Plasma-activated Water. Rev Chim 2019. [DOI: 10.37358/rc.19.1.6864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Yersinia ruckeri is the causative agent of enteric red mouth disease (ERM, yersiniosis), one of the most important diseases that affects particularly farmed salmonids species. Numerous articles have demonstrated that Y. ruckeri can cause both epizootics and zoonosis. Y. ruckeri shows the ability to survive outside the host in nutrient-limiting environments for long periods due to biofilms forming capacity with adherence to solid supports but also for the adherence to the host tissues. Considering these aspects, the control of Y. ruckeri can be a problem, because of its resistance. Recently, non-thermal plasma activated water (PAW) proved to be active against Gram-negative bacteria and this fact could be also useful in Y. ruckeri control. The purpose of this in vitro study was to test the antimicrobial efficacy of PAW against Y. ruckeri and to explore the ultrastructural changes in these bacteria. Ultrastructural changes in Y. ruckeri cells, probably related to the action of PAW, included modifications in the shape and texture of the outer membrane. These changes in the bacterial membrane have been linked with the inactivation of bacteria by PAW exposure.
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Seidel D, Meißner A, Lackner M, Piepenbrock E, Salmanton-García J, Stecher M, Mellinghoff S, Hamprecht A, Durán Graeff L, Köhler P, Cheng MP, Denis J, Chedotal I, Chander J, Pakstis DL, Los-Arcos I, Slavin M, Montagna MT, Caggiano G, Mares M, Trauth J, Aurbach U, Vehreschild MJGT, Vehreschild JJ, Duarte RF, Herbrecht R, Wisplinghoff H, Cornely OA. Prognostic factors in 264 adults with invasive Scedosporium spp. and Lomentospora prolificans infection reported in the literature and FungiScope®. Crit Rev Microbiol 2019; 45:1-21. [DOI: 10.1080/1040841x.2018.1514366] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Danila Seidel
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Arne Meißner
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
- Department of Hospital Hygiene and Infection Control, University Hospital Cologne, Cologne, Germany
| | - Michaela Lackner
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck (MUI), Innsbruck, Austria
| | - Ellen Piepenbrock
- Department of Immunology and Hygiene, Institute for Medical Microbiology, University of Cologne, Cologne, Germany
| | - Jon Salmanton-García
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
| | - Melanie Stecher
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
- Partner site Bonn - Cologne, German Centre for Infection Research (DZIF), Cologne, Germany
| | - Sibylle Mellinghoff
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
| | - Axel Hamprecht
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck (MUI), Innsbruck, Austria
| | - Luisa Durán Graeff
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
| | - Philipp Köhler
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Partner site Bonn - Cologne, German Centre for Infection Research (DZIF), Cologne, Germany
| | - Matthew P. Cheng
- Division of Infectious Diseases and Department of Medical Microbiology, McGill University Health Centre, Montreal, Canada
| | - Julie Denis
- Hôpitaux Universitaires, Department of Parasitology and Mycology, Plateau Technique de Microbiologie, FMTS, Université de Strasbourg, Strasbourg, France
| | - Isabelle Chedotal
- Oncology and Hematology Department, University Hospital of Strasbourg and INSERM U1113, Strasbourg, France
| | - Jagdish Chander
- Department of Microbiology, Government Medical College Hospital, Chandigarh, India
| | | | - Ibai Los-Arcos
- Infectious Diseases Department, Hospital Universitari Vall d’Hebron, Barcelona, Spain
| | - Monica Slavin
- University of Melbourne, Melbourne, Australia, The National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Maria Teresa Montagna
- Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Giuseppina Caggiano
- Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, Bari, Italy
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Ion Ionescu de la Brad University, Iași, Romania
| | - Janina Trauth
- Medical Clinic II – Infectious Diseases, University Hospital Giessen/Marburg, Giessen, Germany
| | - Ute Aurbach
- Laboratory Dr. Wisplinghoff, Cologne, Germany
| | - Maria J. G. T. Vehreschild
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
- Partner site Bonn - Cologne, German Centre for Infection Research (DZIF), Cologne, Germany
- Center for Integrated Oncology CIO Köln/Bonn, Medical Faculty, University of Cologne, Cologne, Germany
| | - Jörg Janne Vehreschild
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
- Partner site Bonn - Cologne, German Centre for Infection Research (DZIF), Cologne, Germany
- Center for Integrated Oncology CIO Köln/Bonn, Medical Faculty, University of Cologne, Cologne, Germany
| | - Rafael F. Duarte
- Hospital Universitario Puerta de Hierro Majadahonda, Madrid, Spain
| | - Raoul Herbrecht
- Oncology and Hematology Department, University Hospital of Strasbourg and INSERM U1113, Strasbourg, France
| | - Hilmar Wisplinghoff
- Department of Immunology and Hygiene, Institute for Medical Microbiology, University of Cologne, Cologne, Germany
- Laboratory Dr. Wisplinghoff, Cologne, Germany
- Institute for Virology and Clinical Microbiology, Witten/Herdecke University, Witten, Germany
| | - Oliver A. Cornely
- Department I of Internal Medicine, University Hospital of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Partner site Bonn - Cologne, German Centre for Infection Research (DZIF), Cologne, Germany
- Center for Integrated Oncology CIO Köln/Bonn, Medical Faculty, University of Cologne, Cologne, Germany
- Clinical Trials Centre Cologne (ZKS Köln), University of Cologne, Cologne, Germany
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Chiriac A, Mares M, Podoleanu C, Moldovan C, Stolnicu S. Horse Shampoo for Human Hair? Journal of Interdisciplinary Medicine 2016. [DOI: 10.1515/jim-2016-0062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Introduction: Lately, a new idea has caught the attention of young people of both genders, being debated in consultation rooms, during classes, and especially on social media: is using horse shampoo for human hair wrong or not?
Material and methods: A simple questionnaire about horse shampoo and its use in humans was addressed to 85 students.
Results: Thirty-eight responders were aware of its existence, 27 have tried it and 3 were still using it as a weekly shampoo. All positive responders were young women who declared being completely satisfied by horse shampoo and none of them have reported side effects.
Conclusion: Although it has good reviews, horse shampoo is not available in human pharmacies. As dermatologists, we are still looking for an answer.
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Affiliation(s)
- Anca Chiriac
- Department of Dermato-Physiology, Apollonia University, Iasi, Romania
- Department of Dermatology, Nicolina Medical Center, Iași, Romania
- “Petru Poni” Research Institute of Macromolecular Chemistry, Romanian Academy of Science, Iași, Romania
| | - Mihai Mares
- “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iași, Romania
| | - Cristian Podoleanu
- Department of Cardiology, University of Medicine and Pharmacy, Tîrgu Mureș, Romania
| | - Cosmin Moldovan
- Department of Histology, University of Medicine and Pharmacy, Tîrgu Mureș, Romania
| | - Simona Stolnicu
- Department of Pathology, University of Medicine and Pharmacy, Tîrgu Mureș, Romania
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Melinte V, Buruiana T, Chibac A, Mares M, Aldea H, Buruiana EC. New acid BisGMA analogs for dental adhesive applications with antimicrobial activity. Dent Mater 2016; 32:e314-e326. [PMID: 27671467 DOI: 10.1016/j.dental.2016.09.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 03/11/2016] [Revised: 07/08/2016] [Accepted: 09/03/2016] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To achieve bisphenol A glycerolate dimethacrylate (BisGMA) analogs with reduced viscosity to be used in the formulation of dental adhesives containing biocidal components. METHODS A series of low-viscosity BisGMA derivatives (η: 39-12Pas) modified with 30, 60 and, respectively 80mol% carboxylic acid units were synthesized and characterized. Hydrogen bonding interactions in our monomers, the photopolymerization behavior and implicitly the conversion degree (DC) for some experimental adhesive formulations containing acid-modified BisGMA, commercial BisGMA (only in F1-F3), triethyleneglycol dimethacrylate and 2-hydroxyethyl methacrylate were examined by FTIR spectroscopy. The water effects on the photocrosslinked networks together with the flexural strength/modulus were also investigated. The adhesive penetration into the dentin surface was surveyed by SEM analysis, and the antimicrobial activity triggered by the incorporation of 0.5wt% AgNO3, 10wt% zinc methacrylate or 1wt% triclosan methacrylate in selected adhesive formulations on the growth of Streptococcus mutans and Candida albicans strains was evidenced. RESULTS The contribution of the hydrogen bonding interactions was found to be lower in BisGMA derivatives than in non-modified BisGMA, and the DC varied between 56.5 (F6) and 83.7% (F1) compared with a control formulation based on BisGMA:TEGDMA (DC=58.2%). The flexural strength and flexural modulus varied in the range 33.7MPa (F6)-54.4MPa (F8)MPa and 0.64 (F6)-1.43 (F8)GPa, respectively. SEM observation of adhesive-dentin interface revealed the formation of resin tags for the carboxyl-containing adhesive, while for the control adhesive they are hardly formed. Also, the microorganism development was inhibited, the proposed materials displaying antimicrobial activity. SIGNIFICANCE The experimental formulations based on carboxyl-functionalized BisGMA exhibit a similar or even improved behavior over control sample, suggesting their potential applicability as antimicrobial dental adhesives.
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Affiliation(s)
- Violeta Melinte
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania
| | - Tinca Buruiana
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania.
| | - Andreea Chibac
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, "Ion Ionescu de la Brad" University, 8 Sadoveanu Alley, 700489 Iasi, Romania
| | - Horia Aldea
- Dental Office, 17 T. Vladimirescu Street, Iasi, Romania
| | - Emil C Buruiana
- Polyaddition and Photochemistry Department, Petru Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania
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Chiriac A, Mares M, Mihaila D, Solovan C, Moldovan C, Stolnicu S, Hagen F. Primary cutaneous cryptococcosis during infliximab therapy. Dermatol Ther 2016; 30. [PMID: 27637071 DOI: 10.1111/dth.12405] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 07/26/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Anca Chiriac
- Department of Dermatology, Apollonia University, Iasi, Romania
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, "Ion Ionescu de la Brad" University, Iasi, Romania
| | - Doina Mihaila
- Department of Pathology, Saint Mary Emergency Hospital for Children, Iasi, Romania
| | - Caius Solovan
- Department of Dermatology, "Victor Babes" University of Medicine and Pharmacy, Timisoara, Romania
| | - Cosmin Moldovan
- Department of Histology, University of Medicine and Pharmacy of Tirgu Mures, Romania
| | - Simona Stolnicu
- Department of Pathology, University of Medicine and Pharmacy of Tirgu Mures, Romania
| | - Ferry Hagen
- Department of Medical Microbiology & Infectious Diseases, Canisius-Wilhelmina Hospital, Nijmegen, the Netherlands
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Minea B, Nastasa V, Kolecka A, Mares M, Marangoci N, Rosca I, Pinteala M, Hancianu M, Mares M. Etiologic Agents and Antifungal Susceptibility of Oral Candidosis from Romanian patients with HIV-infection or type 1 diabetes mellitus. Pol J Microbiol 2016; 65:123-9. [PMID: 27282005 DOI: 10.5604/17331331.1197327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This is the first Romanian investigation of oral candidosis in patients suffering of HIV-infection or type 1 diabetes mellitus (T1DM). Candida albicans was the dominant species in both types of isolates: n = 14 (46.7%) in T1DM, n = 60 (69.8%) in HIV. The most frequent non-albicans Candida spp. were Candida kefyr (n = 6; 20%) in T1DM and Candida dubliniensis (n = 8; 9.3%) in HIV. Resistance to fluconazole was detected only in the HIV non-albicans Candida group (n = 8; 9.3%). All isolates were susceptible to VOR. The experimental drug MXP had MIC values equal or close to the ones of VOR. Echinocandin resistance was more frequent than azole resistance.
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Ailincai D, Marin L, Morariu S, Mares M, Bostanaru AC, Pinteala M, Simionescu BC, Barboiu M. Dual crosslinked iminoboronate-chitosan hydrogels with strong antifungal activity against Candida planktonic yeasts and biofilms. Carbohydr Polym 2016; 152:306-316. [PMID: 27516277 DOI: 10.1016/j.carbpol.2016.07.007] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [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: 05/04/2016] [Revised: 06/29/2016] [Accepted: 07/02/2016] [Indexed: 02/06/2023]
Abstract
Chitosan based hydrogels are a class of cross-linked materials intensely studied for their biomedical, industrial and environmental application, but their biomedical use is limited because of the toxicity of different organic crosslinkers. To overcome this disadvantage, a new strategy to produce supramolecular chitosan hydrogels using low molecular weight compounds able to form covalent linkages and H-bonds to give a dual crosslinking is proposed. For this purpose we used 2-formylphenylboronic acid, which brings the advantage of imine stabilization via iminoboronate formation and potential antifungal activity due to the presence of boric acid residue. FTIR and NMR spectroscopy indicated that the gelling process took place by chemo-physical crosslinking forming a dual iminoboronate-chitosan network. Further, X-ray diffraction demonstrated a three-dimensional nanostructuring of the iminoboronate network with consequences on the micrometer-scale morphology and on the improvement of mechanical properties, as demonstrated by SEM and rheological investigation. The hydrogels proved strong antifungal activity against Candida planktonic yeasts and biofilms, promising to be a friendly treatment of the recurrent vulvovaginitis infections.
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Affiliation(s)
- Daniela Ailincai
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41A, Aleea Gr. Ghica Voda, Iasi, Romania
| | - Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41A, Aleea Gr. Ghica Voda, Iasi, Romania.
| | - Simona Morariu
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41A, Aleea Gr. Ghica Voda, Iasi, Romania
| | - Mihai Mares
- "Ion Ionescu de la Brad" University, Laboratory of Antimicrobial Chemotherapy, 8, Aleea Sadoveanu, Iasi, Romania
| | - Andra-Cristina Bostanaru
- "Ion Ionescu de la Brad" University, Laboratory of Antimicrobial Chemotherapy, 8, Aleea Sadoveanu, Iasi, Romania
| | - Mariana Pinteala
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41A, Aleea Gr. Ghica Voda, Iasi, Romania
| | - Bogdan C Simionescu
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41A, Aleea Gr. Ghica Voda, Iasi, Romania; "Gheorghe Asachi" Technical University of Iasi, 73, Bd. Dimitrie Mangeron, Iasi, Romania
| | - Mihai Barboiu
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41A, Aleea Gr. Ghica Voda, Iasi, Romania; Institut Européen des Membranes, F-34095, Place Eugène Bataillon, Montpellier, France
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Arendrup M, Meletiadis J, Mouton J, Guinea J, Cuenca-Estrella M, Lagrou K, Howard S, Arendrup M, Meletiadis J, Howard S, Mouton J, Guinea J, Lagrou K, Arikan-Akdagli S, Barchiesi F, Hamal P, Järv H, Lass-Flörl C, Mares M, Matos T, Muehlethaler K, Rogers T, Torp Andersen C, Verweij P. EUCAST technical note on isavuconazole breakpoints for Aspergillus, itraconazole breakpoints for Candida and updates for the antifungal susceptibility testing method documents. Clin Microbiol Infect 2016; 22:571.e1-4. [DOI: 10.1016/j.cmi.2016.01.017] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 01/24/2016] [Indexed: 12/18/2022]
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Minea B, Marangoci N, Peptanariu D, Rosca I, Nastasa V, Corciova A, Varganici C, Nicolescu A, Fifere A, Neamtu A, Mares M, Barboiu M, Pinteala M. Inclusion complexes of propiconazole nitrate with substituted β-cyclodextrins: the synthesis and in silico and in vitro assessment of their antifungal properties. NEW J CHEM 2016. [DOI: 10.1039/c5nj01811k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inclusion complexes with sulfobutylether-β-cyclodextrin, β-cyclodextrin sulphated sodium salt and monochlorotriazinyl-β-cyclodextrin were characterized and assessed for antifungal activity and cytotoxicity.
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Chiriac A, Brzezinski P, Chiriac AE, Pinteala T, Mares M, Moldovan C, Podoleanu C, Cioloca D, Arenas R, Chang P, Stolnicu S. Why Is Tinea an Annular Lesion With Centrifugal Growth? Int J Surg Pathol 2015; 23:652-3. [PMID: 26385338 DOI: 10.1177/1066896915606972] [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: 11/16/2022]
Affiliation(s)
- Anca Chiriac
- Nicolina Medical Center, Iasi, Romania Apollonia University, Iasi, Romania
| | | | - Anca E Chiriac
- "Gr. T. Popa" University of Medicine and Pharmacy, Iasi, Romania
| | - Tudor Pinteala
- "Gr. T. Popa" University of Medicine and Pharmacy, Iasi, Romania
| | - Mihai Mares
- "Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Iasi, Romania
| | - Cosmin Moldovan
- University of Medicine and Pharmacy of Tirgu Mures, Tirgu Mures, Romania
| | - Cristian Podoleanu
- University of Medicine and Pharmacy of Tirgu Mures, Tirgu Mures, Romania
| | - Daniel Cioloca
- "Gr. T. Popa" University of Medicine and Pharmacy, Iasi, Romania
| | - Roberto Arenas
- "Dr Manuel Gea González" General Hospital, Mexico City, Mexico
| | - Patricia Chang
- Hospital General de Enfermedades IGSS and Hospital Ángeles, Guatemala City, Guatemala
| | - Simona Stolnicu
- University of Medicine and Pharmacy of Tirgu Mures, Tirgu Mures, Romania
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Marin L, Ailincai D, Mares M, Paslaru E, Cristea M, Nica V, Simionescu BC. Imino-chitosan biopolymeric films. Obtaining, self-assembling, surface and antimicrobial properties. Carbohydr Polym 2015; 117:762-770. [DOI: 10.1016/j.carbpol.2014.10.050] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 10/15/2014] [Accepted: 10/16/2014] [Indexed: 11/26/2022]
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Minea B, Nastasa V, Moraru RF, Kolecka A, Flonta MM, Marincu I, Man A, Toma F, Lupse M, Doroftei B, Marangoci N, Pinteala M, Boekhout T, Mares M. Species distribution and susceptibility profile to fluconazole, voriconazole and MXP-4509 of 551 clinical yeast isolates from a Romanian multi-centre study. Eur J Clin Microbiol Infect Dis 2014; 34:367-83. [PMID: 25224578 DOI: 10.1007/s10096-014-2240-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [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: 06/06/2014] [Accepted: 08/27/2014] [Indexed: 01/22/2023]
Abstract
This is the first multi-centre study regarding yeast infections in Romania. The aim was to determine the aetiological spectrum and susceptibility pattern to fluconazole, voriconazole and the novel compound MXP-4509. The 551 isolates were identified using routine laboratory methods, matrix-assisted laser desorption ionisation time-of-flight mass spectrometry (MALDI-TOF MS) and DNA sequence analysis. Susceptibility testing was performed using the European Committee for Antimicrobial Susceptibility Testing (EUCAST) method and breakpoints. The yeasts originated from superficial infections (SUP, 51.5 %), bloodstream infections (BSI, 31.6 %) and deep-seated infections (DEEP, 16.9 %), from patients of all ages. Nine genera and 30 species were identified. The 20 Candida species accounted for 94.6 % of all isolates. C. albicans was the overall leading pathogen (50.5 %). Lodderomyces elongisporus is reported for the first time as a fungaemia cause in Europe. C. glabrata and Saccharomyces cerevisiae, as well as the non-Candida spp. and non-albicans Candida spp. groups, showed decreased fluconazole susceptibility (<75 %). The overall fluconazole resistance was 10.2 %. C. krusei accounted for 27 of the 56 fluconazole-resistant isolates. The overall voriconazole resistance was 2.5 % and was due mainly to C. glabrata and C. tropicalis isolates. Fluconazole resistance rates for the three categories of infection were similar to the overall value; voriconazole resistance rates differed: 4 % for BSI, 3.2 % for DEEP and 1.4 % for SUP. The antifungal activity of MXP-4509 was superior to voriconazole against C. glabrata and many fluconazole-resistant isolates. There was a large percentage of non-albicans Candida isolates. A large part of the high fluconazole resistance was not acquired but intrinsic, resulting from the high percentage of C. krusei.
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Affiliation(s)
- B Minea
- Advanced Research Centre for Bionanoconjugates and Biopolymers, Institute of Macromolecular Chemistry "Petru Poni", 700487, Iasi, Romania
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Marangoci N, Maier SS, Ardeleanu R, Arvinte A, Fifere A, Petrovici AR, Nicolescu A, Nastasa V, Mares M, Pasca SA, Moraru RF, Pinteala M, Chiriac A. Low Toxicity β-Cyclodextrin-Caged 4,4′-Bipyridinium-bis(siloxane): Synthesis and Evaluation. Chem Res Toxicol 2014; 27:546-57. [DOI: 10.1021/tx400407e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Narcisa Marangoci
- Centre
of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi 700487, Romania
| | - Stelian S. Maier
- Centre
of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi 700487, Romania
- Department of Textile and Leather Chemical Engineering, “Gheorghe Asachi” Technical University of Iasi, Iasi 700050, Romania
| | - Rodinel Ardeleanu
- Centre
of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi 700487, Romania
| | - Adina Arvinte
- Centre
of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi 700487, Romania
| | - Adrian Fifere
- Centre
of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi 700487, Romania
| | - Anca Roxana Petrovici
- Centre
of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi 700487, Romania
| | - Alina Nicolescu
- Centre
of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi 700487, Romania
| | - Valentin Nastasa
- Faculty of Veterinary
Medicine, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iasi 700489, Romania
| | - Mihai Mares
- Faculty of Veterinary
Medicine, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iasi 700489, Romania
| | - Sorin A. Pasca
- Faculty of Veterinary
Medicine, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iasi 700489, Romania
| | - Ramona F. Moraru
- Faculty of Veterinary
Medicine, “Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iasi 700489, Romania
| | - Mariana Pinteala
- Centre
of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry of Romanian Academy, Iasi 700487, Romania
| | - Anca Chiriac
- Nicolina Medical Center, CMI Dermatology, Iasi 700613, Romania
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Abstract
Vanillin-chitosan biodynamers have been prepared and structure-morphology correlations revealed the pathway of progressive incorporation of the aldehyde onto chitosan backbones. Such dynamic biopolymers or biodynamers, generated from reversibly interacting components, offer the possibility to address the dynamic covalent behaviour of the reversible imine-bond formation/hydrolysis equilibria between vanillin and chitosan polymeric backbones. The reaction takes place with very low conversion in acidic aqueous solutions (7-12%), but the imine bond formation is amazingly improved (∼80%) when the reaction takes place while solution-solid state transition and solid state phase-organization events occur. The chitosan-vanillin biopolymeric films described here present interesting Candida albicans antifungal activity compared with other common bacterial strands, which suggests the implementation of these biocompatible materials as thin layer protecting systems for medical devices.
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Affiliation(s)
- Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry of Romanian Academy, 41A, Aleea Gr. Ghica Voda, Iasi, Romania
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Dragostin OM, Lupascu F, Vasile C, Mares M, Nastasa V, Moraru RF, Pieptu D, Profire L. Synthesis and biological evaluation of new 2-azetidinones with sulfonamide structures. Molecules 2013; 18:4140-57. [PMID: 23567362 PMCID: PMC6270540 DOI: 10.3390/molecules18044140] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 03/26/2013] [Accepted: 04/03/2013] [Indexed: 11/25/2022] Open
Abstract
New series of N-(arylidene)hydrazinoacetyl sulfonamides 4a1–6, 4b1–6 and N-(4-aryl-3-chloro-2-oxoazetidin-1-yl)aminoacetyl sulfonamides 5a1–6, 5b1–6 were synthesized. The structures of the new derivatives was confirmed using spectral methods (FT-IR, 1H-NMR, 13C-NMR). The antibacterial activities of these compounds against Gram positive (Staphyloccoccus aureus ATCC 6583, Staphyloccoccus epidermidis ATCC 12228, Enterococcus faecalis ATCC 25912) and Gram negative (Klebsiella pneumoniae CIP 53153, Proteus vulgaris CIP 104989, Citrobacter freundii CIP 5732, Enterobacter cloacae CIP 103475, Escherichia coli ATCC 25922, Pseudomonas aeruginosa CIP 82118) bacterial strains were evaluated using the broth micro-dilution method. Compound 4a2 displayed the highest antibacterial activity, especially against Staphyloccoccus epidermidis, Enterococcus faecalis and Pseudomonas aeruginosa. The antioxidant potential of the synthesized compounds was also investigated according to ferric reducing power, total antioxidant activity and DPPH radical scavenging assays. All tested compounds showed excellent antioxidant activity in comparison with sulfadiazine and sulfisoxazole which were used as parent sulfonamides. Moreover, some of them showed an antioxidant activity comparable with that of ascorbic acid. In general, the compounds designed based on a sulfadiazine skeleton (compounds 4a1–6, 5a1–6) are more active than those obtained from sulfisoxazole (compounds 4b1–6, 5b1–6), and the N-(arylidene)hydrazinoacetyl sulfonamide derivatives 4a1–6, 4b1–6 are more active than their azetidionone analogues 5a1–6, 5b1–6.
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Affiliation(s)
- Oana Maria Dragostin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy, 16 University Street, Iasi 700115, Romania; E-Mails: (O.M.D.); (F.L.)
| | - Florentina Lupascu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy, 16 University Street, Iasi 700115, Romania; E-Mails: (O.M.D.); (F.L.)
| | - Cornelia Vasile
- Department of Physical Chemistry of Polymers, Petru Poni Institute of Macromolecular Chemistry, Romanian Academy, 41A Grigore Ghica Voda Alley, Iasi 700487, Romania; E-Mail:
| | - Mihai Mares
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine, 8 Mihail Sadoveanu Alley, Iasi 700489, Romania; E-Mails: (M.M.); (V.N.); (R.F.M.)
| | - Valentin Nastasa
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine, 8 Mihail Sadoveanu Alley, Iasi 700489, Romania; E-Mails: (M.M.); (V.N.); (R.F.M.)
| | - Ramona Florina Moraru
- Laboratory of Antimicrobial Chemotherapy, Faculty of Veterinary Medicine, Ion Ionescu de la Brad University of Agricultural Sciences and Veterinary Medicine, 8 Mihail Sadoveanu Alley, Iasi 700489, Romania; E-Mails: (M.M.); (V.N.); (R.F.M.)
| | - Dragos Pieptu
- Department of Plastic Surgery, Faculty of Medicine, Grigore T. Popa University of Medicine and Pharmacy, 16 University Street, Iasi 700115, Romania
- Authors to whom correspondence should be addressed; E-Mails: (D.P.); (L.P.); Tel.: +40-232-412375 (L.P.); Fax: +40-232-211818 (L.P.)
| | - Lenuta Profire
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Grigore T. Popa University of Medicine and Pharmacy, 16 University Street, Iasi 700115, Romania; E-Mails: (O.M.D.); (F.L.)
- Authors to whom correspondence should be addressed; E-Mails: (D.P.); (L.P.); Tel.: +40-232-412375 (L.P.); Fax: +40-232-211818 (L.P.)
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Parasca OM, Lupascu F, Vasile C, Mares M, Nastasa V, Profire L. New hydrazines with sulphonamidic structure: synthesis,characterization and biological activity. Rev Med Chir Soc Med Nat Iasi 2013; 117:238-243. [PMID: 24505922] [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: 06/03/2023]
Abstract
UNLABELLED Infections caused by bacterial species are common in immunocompromised patients and carry significant treatment costs and mortality. The emerging resistance of microorganisms to some synthetic antimicrobial agents makes it necessary to continue the research for new antimicrobial drugs. AIM To design new sulphonamide compounds with potential antibacterial and antioxidant activity. MATERIAL AND METHODS New N-hydrazino acetyl-sulphonamides were prepared by condensation of some sulphonamides with chloroacetyl chloride and amination of intermediate compounds with hydrazine hydrate. RESULTS The synthesized compounds were screened for their antibacterial activity against Gram positive (Klebsiellapneumoniae. Proteus vulgaris, Citrobacter freundii, Enterobacter cloacae, Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis) and Gram negative bacterial strains (Pseudomonas aeruginosa, Escherichia coli). Some of them were found to have good antibacterial activity. The antioxidant activity of these compounds was also tested using different methods: total antioxidant capacity, reducing power, and DPPH radical scavenging activity. CONCLUSIONS Chemical modulations performed on sulphonamide structure have a good influence on the biological activity of the synthesized compounds, especially on their antioxidant effects.
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Affiliation(s)
- Oana Maria Parasca
- Faculty of Pharmacy, University of Medicine and Pharmacy Grigore T. Popa, Iasi
| | - Florentina Lupascu
- Discipline of Pharmaceutical Chemistry, University of Medicine and Pharmacy Grigore T. Popa, Iasi
| | - Cornelia Vasile
- Romanian Academy, P. Poni Institute of Macromolecular Chemistry, University of Medicine and Pharmacy Grigore T. Popa, Iasi
| | - M Mares
- Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine of Iasi
| | - V Nastasa
- Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine of Iasi
| | - Lenuta Profire
- Discipline of Pharmaceutical Chemistry, University of Medicine and Pharmacy Grigore T. Popa, Iasi
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Moraru R, Pourcher AM, Jadas-Hecart A, Kempf I, Ziebal C, Kervarrec M, Comunal PY, Mares M, Dabert P. Changes in concentrations of fluoroquinolones and of ciprofloxacin-resistant Enterobacteriaceae in chicken feces and manure stored in a heap. J Environ Qual 2012; 41:754-763. [PMID: 22565257 DOI: 10.2134/jeq2011.0313] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This study evaluated the impact of storing chicken manure on the degradation of enrofloxacin (ENR) and ciprofloxacin (CIP), and on the survival of CIP-resistant Enterobacteriaceae. At 24 d of age, half of 8900 chickens received ENR for 5 d. After the animals departed, their manure was stored in two heaps for 63 d. Enterobacteriaceae were cultured on media containing 0 to 32 mg L⁻¹ of CIP. A total of 320 isolates were fingerprinted using enterobacterial repetitive intergenic consensus-polymerase chain reaction (ERIC-PCR) to evaluate community structure. Initial concentrations of ENR and CIP in the heap were 22 and 1.8 mg kg⁻¹, respectively. Seventy-three percent of the two fluoroquinolones were eliminated during storage. The administration of ENR led to a 5.1 log₋₁₀ decrease in Enterobacteriaceae concentrations and emergence of CIP-resistant bacteria, which became dominant in the feces. concentrations decreased 1.2 to 2.3 log₋₁₀ 2 d after the heaps were made and continued to decline during storage. No resistant were found by Day 63. The highest CIP minimum inhibitory concentration (MIC) values observed among isolates of and of both and sp. were 128 and 4 mg L⁻¹, respectively. The dominant ERIC-PCR profiles changed over time. There was no relationship between genotype and resistance-isolated strains to CIP. Storing chicken manure in heaps appeared to be an effective way of limiting the entrance of CIP-resistant E. coli into the environment but did not prevent the dissemination of fluoroquinolones after land spreading.
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Affiliation(s)
- Ramona Moraru
- Univ. of Agricultural Sciences and Veterinary Medicine, Iaşi, Romania
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Socolov D, Mares M, Akad M, Miron N, Socolov R, Ciupilan I. P514 Mycoplasma hominis and Ureaplasma urealiticum incidence and susceptibility to antimicrobial agents in patients with infertility in the North-East of Romania. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62004-x] [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: 10/20/2022]
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Miron L, Mares M, Nastasa V, Spulber M, Fifere A, Pinteala M, Harabagiu V, Simionescu BC. Water soluble sulconazole-β-cyclodextrin complex: physico-chemical characterization and preliminary pharmacological studies. J INCL PHENOM MACRO 2008. [DOI: 10.1007/s10847-008-9501-x] [Citation(s) in RCA: 7] [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: 11/24/2022]
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46
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Kadanka Z, Mares M, Bednarík J, Smrcka V, Krbec M, Chaloupka R, Dusek L. Predictive factors for mild forms of spondylotic cervical myelopathy treated conservatively or surgically. Eur J Neurol 2005; 12:16-24. [PMID: 15613142 DOI: 10.1111/j.1468-1331.2004.00947.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [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: 11/29/2022]
Abstract
A prospective 3-year randomized study comparing conservative and surgical treatment of spondylotic cervical myelopathy to establish predictive factors for outcome after conservative treatment and surgery. The clinical, electrophysiological and imaging parameters were examined to reveal how they characterized the clinical outcome. Statistically, pair-wise and multiple comparisons of different were used with the independent t-test and on one-way anova models followed by Tukey multiple-range tests. The patients with a good outcome in the conservatively treated group were of older age before treatment, had normal central motor conduction time (CMCT), and possessed a larger transverse area of the spinal cord. The patients with a good outcome in the surgically treated group had a more serious clinical picture (expressed in mJOA score and slower walk). Patients should rather be treated conservatively if they a spinal transverse area larger than 70 mm2, are of older age, and have normal CMCT. Surgery is more suitable for patients with clinically worse status and a lesser transverse area of spinal cord.
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Affiliation(s)
- Z Kadanka
- Department of Neurology, Medical Faculty, Masaryk University and Universi Hospital Brno, Czech Republic.
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47
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Kadanka Z, Mares M, Bednarík J, Smrcka V, Krbec M, Chaloupka R, Dusek L. Predictive factors for spondylotic cervical myelopathy treated conservatively or surgically. Eur J Neurol 2005; 12:55-63. [PMID: 15613148 DOI: 10.1111/j.1468-1331.2004.00896.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [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: 11/29/2022]
Abstract
A prospective 3-year randomized study comparing conservative and surgical treatment of spondylotic cervical myelopathy to establish predictive factors for outcome after conservative treatment and surgery. The clinical, electrophysiological and imaging parameters were examined to reveal how they characterized the clinical outcome. The patients with a good outcome in the conservatively treated group were of older age before treatment, had normal central motor conduction time (CMCT), and possessed a larger transverse area of the spinal cord. The patients with a good outcome in the surgically treated group had a more serious clinical picture (expressed in mJOA score and slower walk). Patients should rather be treated conservatively if they have a spinal transverse area larger than 70 mm2, are of older age and have normal CMCT. Surgery is more suitable for patients with clinically worse status and a lesser transverse area of spinal cord.
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Affiliation(s)
- Z Kadanka
- Department of Neurology, Medical Faculty Masaryk University and University Hospital Brno, Czech Republic.
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Abstract
Protease inhibitors (PIs) are plant compounds that can inhibit proteases of mammal, insect, or pathogen origin and are frequently induced by mechanical wounding, insect feeding, or pathogen infection. Nicotiana attenuata is a species that induces nicotine, volatiles, and phenolics in response to damage. Here we examine the distribution of PIs in N. attenuata to determine if they are part of the induced response in this species and if this response is ontogenetically constrained. We found that N. attenuata shoot extracts inhibited trypsin (Tryp) and chymotrypsin (Chym) activities, while root extracts inhibited Tryp, Chym, and the bacterial protease subtilisin (Sub). The highest TrypPI levels were found at midday in the source-sink transition leaf, while older or younger leaves contained lower TrypPI levels and did not show significant diurnal fluctuations. Rosette plants, bolting plants, and flowering plants all contained TrypPIs in leaves, stems, and flowers, while seed capsules, seeds, and young seedlings did not contain any PIs. PIs in N. attenuata rosette plants were induced by Manduca sexta larval feeding, methyl jasmonate (MeJA) treatment, wounding, and application of M. sexta oral secretion and regurgitant. The response to MeJA application was stronger and longer lasting than to mechanical wounding. The direction and magnitude of the systemic response to mechanical wounding or larval damage depended on the age of the leaf that was damaged and the frequency of wounding. The systemic signal for TrypPI induction appears to follow source-sink relations in the plant and to be regulated by the octadecanoid pathway. Interestingly, by the time plants reach the flowering stage, they had lost the ability to increase PI levels after MeJA treatment. We concluded that plant ontogeny constrains both constitutive and inducible PI production in N. attenuata.
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Affiliation(s)
- N M van Dam
- Max-Planck-Institute for Chemical Ecology, Carl-Zeiss-Promenade 10, D-07745 Jena, Germany
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Chalumeau M, Tréluyer JM, Salanave B, Assathiany R, Chéron G, Crocheton N, Rougeron C, Mares M, Bréart G, Pons G. Off label and unlicensed drug use among French office based paediatricians. Arch Dis Child 2000; 83:502-5. [PMID: 11087286 PMCID: PMC1718582 DOI: 10.1136/adc.83.6.502] [Citation(s) in RCA: 118] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIMS To determine the extent of off label and unlicensed drug use in French office based paediatric practice. METHODS A prospective one day survey of all written prescriptions, for patients under 15 years, among 95 office based paediatricians in the Paris, France metropolitan area. Main outcome measures were: comparison of the use of each drug with its product licence for age, indication, dose, and route of administration. RESULTS A total of 2522 prescriptions were administered to 989 patients; 844 (33%) were used either in an unlicensed (4%) or an off label (29%) manner. A total of 550 (56%) paediatric patients received one or more off label prescriptions. CONCLUSIONS Off label prescriptions (that is, outside the terms of the Summary of Product Characteristics) are widespread in office based paediatric practice, while unlicensed drug use is rare in our study. New regulations in the licensing process in Europe are needed to allow children to receive drugs that have been fully evaluated in their specific age group.
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Affiliation(s)
- M Chalumeau
- Pharmacologie Périnatale et Pédiatrique, Université René Descartes-Paris V, Hôpital Saint-Vincent de Paul, 82, avenue Denfert-Rochereau, 75674 Paris Cedex 14, France
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Maresová L, Kutinová L, Ludvíková V, Zák R, Mares M, Nemecková S. Characterization of interaction of gH and gL glycoproteins of varicella-zoster virus: their processing and trafficking. J Gen Virol 2000; 81:1545-52. [PMID: 10811938 DOI: 10.1099/0022-1317-81-6-1545] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [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: 11/18/2022] Open
Abstract
Varicella-zoster virus (VZV) glycoproteins gH and gL were examined in a recombinant vaccinia virus system. Single expression of glycoprotein gL produced two molecular forms: an 18 kDa form and a 19 kDa form differing in size by one endoglycosidase H-sensitive N-linked oligosaccharide. Coexpression of gL and gH resulted in binding of the 18 kDa gL form with the mature form of gH, while the 19 kDa gL form remained uncomplexed. The glycosylation processing of gL was not dependent on gH; however, gL was required for the conversion of precursor gH (97 kDa) to mature gH (118 kDa). Subsequent analyses indicated that gL (18 kDa) was a more completely processed gL (19 kDa). Screening of the culture media revealed that gH and gL were secreted, but only if coexpressed and complexed together. The secreted form of gL was 18 kDa while that of gH was 114 kDa. The fact that secreted gH was smaller than intracytoplasmic gH suggested a proteolytic processing event prior to secretion. The 19 kDa form of gL was never secreted. These findings support a VZV gL recycling pathway between the endoplasmic reticulum and the cis-Golgi apparatus.
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Affiliation(s)
- L Maresová
- Institute of Haematology and Blood Transfusion, Dept of Experimental Virology, Prague 128 20, Czech Republic.
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