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Mills B, Kiang A, Mohanan SMPC, Bradley M, Klausen M. Riboflavin-Vancomycin Conjugate Enables Simultaneous Antibiotic Photo-Release and Photodynamic Killing against Resistant Gram-Positive Pathogens. JACS AU 2023; 3:3014-3023. [PMID: 38034955 PMCID: PMC10685426 DOI: 10.1021/jacsau.3c00369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 12/02/2023]
Abstract
Decades of antibiotic misuse have led to alarming levels of antimicrobial resistance, and the development of alternative diagnostic and therapeutic strategies to delineate and treat infections is a global priority. In particular, the nosocomial, multidrug-resistant "ESKAPE" pathogens such as Gram-positive methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus spp (VRE) urgently require alternative treatments. Here, we developed light-activated molecules based on the conjugation of the FDA-approved photosensitizer riboflavin to the Gram-positive specific ligand vancomycin to enable targeted antimicrobial photodynamic therapy. The riboflavin-vancomycin conjugate proved to be a potent and versatile antibacterial agent, enabling the rapid, light-mediated, killing of MRSA and VRE with no significant off-target effects. The attachment of riboflavin on vancomycin also led to an increase in antibiotic activity against S. aureus and VRE. Simultaneously, we evidenced for the first time that the flavin subunit undergoes an efficient photoinduced bond cleavage reaction to release vancomycin, thereby acting as a photoremovable protecting group with potential applications in drug delivery.
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Affiliation(s)
- Bethany Mills
- Translational Healthcare Technologies group, Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, U.K
| | - Alex Kiang
- Translational Healthcare Technologies group, Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, U.K
| | - Syam Mohan P C Mohanan
- Translational Healthcare Technologies group, Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Crescent, Edinburgh EH16 4TJ, U.K
| | - Mark Bradley
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, U.K
| | - Maxime Klausen
- EaStCHEM School of Chemistry, University of Edinburgh, David Brewster Road, EH9 3FJ Edinburgh, U.K
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2
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Suner SS, Bhethanabotla VR, Ayyala RS, Sahiner N. Rapid Pathogen Purge by Photosensitive Arginine-Riboflavin Carbon Dots without Toxicity. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6512. [PMID: 37834647 PMCID: PMC10573186 DOI: 10.3390/ma16196512] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023]
Abstract
Photo-activatable antipathogenic carbon dots (CDs) were prepared by carbonization of citric acid and arginine (Arg) via 3 min microwave treatment for use in the eradication of common microorganisms. Nitrogen-doped Arg CDs were spherical in shape with a size range of 0.5 to 5 nm. The Arg CDs were modified with fluorescent dyes, such as fluorescein sodium salt (FSS, as Arg-FSS) and riboflavin (RBF, as Arg-RBF), to improve antimicrobial potency by enhancing their application in photodynamic therapy. The modified Arg CDs afforded fluorescence emission properties at 520 nm in the green region in addition to excellent blue fluorescence intensity at 420 nm under 345 nm excitation upon their FSS and RBF conjugation, respectively. Although the cytotoxicity of Arg CDs was decreased for Arg-RBF CDs to 91.2 ± 0.7% cell viability for fibroblasts, the Arg-based CDs could be safely used for intravenous applications at 1000 μg/mL concentration. The Arg CDs showed broad-spectrum antimicrobial activity against common pathogens and the minimum inhibitory concentration of Arg CDs was almost two-fold decreased for the modified forms without UV light. However, faster and more effective antibacterial activity was determined for photosensitive Arg-RBF CDs, with total bacterial eradication upon UV-A light exposure for 30 min.
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Affiliation(s)
- Selin S. Suner
- Department of Chemistry, Faculty of Sciences & Arts, and Nanoscience and Technology Research and Application Center (NANORAC), Canakkale Onsekiz Mart University Terzioglu Campus, Canakkale 17100, Turkey;
| | - Venkat R. Bhethanabotla
- Department of Chemical, Biological, and Materials Engineering, Materials Science and Engineering Program, University of South Florida, Tampa, FL 33620, USA;
| | - Ramesh S. Ayyala
- Department of Ophthalmology, Morsani College of Medicine, University of South Florida Eye Institute,12901 Bruce B Down Blvd, MDC 21, Tampa, FL 33612, USA;
| | - Nurettin Sahiner
- Department of Chemistry, Faculty of Sciences & Arts, and Nanoscience and Technology Research and Application Center (NANORAC), Canakkale Onsekiz Mart University Terzioglu Campus, Canakkale 17100, Turkey;
- Department of Chemical, Biological, and Materials Engineering, Materials Science and Engineering Program, University of South Florida, Tampa, FL 33620, USA;
- Department of Ophthalmology, Morsani College of Medicine, University of South Florida Eye Institute,12901 Bruce B Down Blvd, MDC 21, Tampa, FL 33612, USA;
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3
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Insińska-Rak M, Sikorski M, Wolnicka-Glubisz A. Riboflavin and Its Derivates as Potential Photosensitizers in the Photodynamic Treatment of Skin Cancers. Cells 2023; 12:2304. [PMID: 37759526 PMCID: PMC10528563 DOI: 10.3390/cells12182304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/05/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Riboflavin, a water-soluble vitamin B2, possesses unique biological and physicochemical properties. Its photosensitizing properties make it suitable for various biological applications, such as pathogen inactivation and photodynamic therapy. However, the effectiveness of riboflavin as a photosensitizer is hindered by its degradation upon exposure to light. The review aims to highlight the significance of riboflavin and its derivatives as potential photosensitizers for use in photodynamic therapy. Additionally, a concise overview of photodynamic therapy and utilization of blue light in dermatology is provided, as well as the photochemistry and photobiophysics of riboflavin and its derivatives. Particular emphasis is given to the latest findings on the use of acetylated 3-methyltetraacetyl-riboflavin derivative (3MeTARF) in photodynamic therapy.
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Affiliation(s)
- Małgorzata Insińska-Rak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland; (M.I.-R.); (M.S.)
| | - Marek Sikorski
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland; (M.I.-R.); (M.S.)
| | - Agnieszka Wolnicka-Glubisz
- Department of Biophysics and Cancer Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland
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Chen L, Zhao Y, Wu W, Zeng Q, Wang JJ. New trends in the development of photodynamic inactivation against planktonic microorganisms and their biofilms in food system. Compr Rev Food Sci Food Saf 2023; 22:3814-3846. [PMID: 37530552 DOI: 10.1111/1541-4337.13215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 07/06/2023] [Accepted: 07/10/2023] [Indexed: 08/03/2023]
Abstract
The photodynamic inactivation (PDI) is a novel and effective nonthermal inactivation technology. This review provides a comprehensive overview on the bactericidal ability of endogenous photosensitizers (PSs)-mediated and exogenous PSs-mediated PDI against planktonic bacteria and their biofilms, as well as fungi. In general, the PDI exhibited a broad-spectrum ability in inactivating planktonic bacteria and fungi, but its potency was usually weakened in vivo and for eradicating biofilms. On this basis, new strategies have been proposed to strengthen the PDI potency in food system, mainly including the physical and chemical modification of PSs, the combination of PDI with multiple adjuvants, adjusting the working conditions of PDI, improving the targeting ability of PSs, and the emerging aggregation-induced emission luminogens (AIEgens). Meanwhile, the mechanisms of PDI on eradicating mono-/mixed-species biofilms and preserving foods were also summarized. Notably, the PDI-mediated antimicrobial packaging film was proposed and introduced. This review gives a new insight to develop the potent PDI system to combat microbial contamination and hazard in food industry.
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Affiliation(s)
- Lu Chen
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Yong Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai, China
| | - Weiliang Wu
- Food Safety and Health Research Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China
| | - Qiaohui Zeng
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan, China
- Foshan Research Center for Quality Safety of the Whole Industry Chain of Agricultural Products, Foshan University, Foshan, China
| | - Jing Jing Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai, China
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan, China
- National Technical Center (Foshan) for Quality Control of Famous and Special Agricultural Products, Foshan University, Foshan, China
- Foshan Research Center for Quality Safety of the Whole Industry Chain of Agricultural Products, Foshan University, Foshan, China
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5
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Golczak A, Prukała D, Sikorska E, Gierszewski M, Cherkas V, Kwiatek D, Kubiak A, Varma N, Pędziński T, Murphree S, Cibulka R, Mrówczyńska L, Kolanowski JL, Sikorski M. Tetramethylalloxazines as efficient singlet oxygen photosensitizers and potential redox-sensitive agents. Sci Rep 2023; 13:13426. [PMID: 37591918 PMCID: PMC10435492 DOI: 10.1038/s41598-023-40536-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 08/12/2023] [Indexed: 08/19/2023] Open
Abstract
Tetramethylalloxazines (TMeAll) have been found to have a high quantum yield of singlet oxygen generation when used as photosensitizers. Their electronic structure and transition energies (S0 → Si, S0 → Ti, T1 → Ti) were calculated using DFT and TD-DFT methods and compared to experimental absorption spectra. Generally, TMeAll display an energy diagram similar to other derivatives belonging to the alloxazine class of compounds, namely π,π* transitions are accompanied by closely located n,π* transitions. Photophysical data such as quantum yields of fluorescence, fluorescence lifetimes, and nonradiative rate constants were also studied in methanol (MeOH), acetonitrile (ACN), and 1,2-dichloroethane (DCE). The transient absorption spectra were also analyzed. To assess cytotoxicity of new compounds, a hemolytic assay was performed using human red blood cells (RBC) in vitro. Subsequently, fluorescence lifetime imaging experiments (FLIM) were performed on RBC under physiological and oxidative stress conditions alone or in the presence of TMeAll allowing for pinpointing changes caused by those compounds on the intracellular environment of these cells.
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Affiliation(s)
- Anna Golczak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Dorota Prukała
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Ewa Sikorska
- Poznań University of Economics and Business, Al. Niepodległości 10, 61-875, Poznan, Poland
| | - Mateusz Gierszewski
- Faculty of Physics, Adam Mickiewicz University, Uniwersytetu Poznańskiego 2, 61-614, Poznan, Poland
| | - Volodymyr Cherkas
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704, Poznan, Poland
| | - Dorota Kwiatek
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704, Poznan, Poland
| | - Adam Kubiak
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Naisargi Varma
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Tomasz Pędziński
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Shaun Murphree
- Department of Chemistry, Allegheny College, 520 N. Main Street, Meadville, PA, USA
| | - Radek Cibulka
- Department of Organic Chemistry, University of Chemistry and Technology, Prague, Technicka 5, 16628, Prague 6, Czech Republic.
| | - Lucyna Mrówczyńska
- Faculty of Biology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-614, Poznan, Poland.
| | - Jacek Lukasz Kolanowski
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704, Poznan, Poland.
| | - Marek Sikorski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland.
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Jafari A, Ajji Z, Mousavi A, Naghieh S, Bencherif SA, Savoji H. Latest Advances in 3D Bioprinting of Cardiac Tissues. ADVANCED MATERIALS TECHNOLOGIES 2022; 7:2101636. [PMID: 38044954 PMCID: PMC10691862 DOI: 10.1002/admt.202101636] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Indexed: 12/05/2023]
Abstract
Cardiovascular diseases (CVDs) are known as the major cause of death worldwide. In spite of tremendous advancements in medical therapy, the gold standard for CVD treatment is still transplantation. Tissue engineering, on the other hand, has emerged as a pioneering field of study with promising results in tissue regeneration using cells, biological cues, and scaffolds. Three-dimensional (3D) bioprinting is a rapidly growing technique in tissue engineering because of its ability to create complex scaffold structures, encapsulate cells, and perform these tasks with precision. More recently, 3D bioprinting has made its debut in cardiac tissue engineering, and scientists are investigating this technique for development of new strategies for cardiac tissue regeneration. In this review, the fundamentals of cardiac tissue biology, available 3D bioprinting techniques and bioinks, and cells implemented for cardiac regeneration are briefly summarized and presented. Afterwards, the pioneering and state-of-the-art works that have utilized 3D bioprinting for cardiac tissue engineering are thoroughly reviewed. Finally, regulatory pathways and their contemporary limitations and challenges for clinical translation are discussed.
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Affiliation(s)
- Arman Jafari
- Institute of Biomedical Engineering, Department of Pharmacology and Physiology, Faculty of Medicine, University of Montreal, Montreal, QC, H3T 1J4, Canada
- Research Center, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, H3T 1C5, Canada
- Montreal TransMedTech Institute, Montreal, QC, H3T 1J4, Canada
| | - Zineb Ajji
- Institute of Biomedical Engineering, Department of Pharmacology and Physiology, Faculty of Medicine, University of Montreal, Montreal, QC, H3T 1J4, Canada
- Research Center, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, H3T 1C5, Canada
- Montreal TransMedTech Institute, Montreal, QC, H3T 1J4, Canada
| | - Ali Mousavi
- Institute of Biomedical Engineering, Department of Pharmacology and Physiology, Faculty of Medicine, University of Montreal, Montreal, QC, H3T 1J4, Canada
- Research Center, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, H3T 1C5, Canada
- Montreal TransMedTech Institute, Montreal, QC, H3T 1J4, Canada
| | - Saman Naghieh
- Division of Biomedical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK, S7N 5A9, Canada
| | - Sidi A. Bencherif
- Department of Chemical Engineering, Northeastern University, Boston, MA 02115, United States
- Department of Bioengineering, Northeastern University, Boston, MA 02115, United States
- Sorbonne University, UTC CNRS UMR 7338, Biomechanics and Bioengineering (BMBI), University of Technology of Compiègne, 60203 Compiègne, France
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02128, United States
| | - Houman Savoji
- Institute of Biomedical Engineering, Department of Pharmacology and Physiology, Faculty of Medicine, University of Montreal, Montreal, QC, H3T 1J4, Canada
- Research Center, Centre Hospitalier Universitaire Sainte-Justine, Montreal, QC, H3T 1C5, Canada
- Montreal TransMedTech Institute, Montreal, QC, H3T 1J4, Canada
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7
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Zhang S, Gao L, Wang P, Ma Y, Wang X, Wen J, Cheng Y, Liu C, Zhang C, Liu C, Yan Y, Zhao C. A minimally manipulated preservation and virus inactivation method for amnion/chorion. Front Bioeng Biotechnol 2022; 10:952498. [PMID: 36032718 PMCID: PMC9403546 DOI: 10.3389/fbioe.2022.952498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/18/2022] [Indexed: 11/15/2022] Open
Abstract
Allogeneic amnion tissues have been widely used in tissue repair and regeneration, especially a remarkable trend of clinical uses in chronic wound repair. The virus inactivation procedures are necessary and required to be verified for the clinical use and approval of biological products. Cobalt-60 (Co-60) or electron-beam (e-beam) is the common procedure for virus and bacterial reduction, but the excessive dose of irradiation was reported to be harmful to biological products. Herein, we present a riboflavin (RB)-ultraviolet light (UV) method for virus inactivation of amnion and chorion tissues. We used the standard in vitro limiting dilution assay to test the viral reduction capacity of the RB-UV method on amnion or chorion tissues loaded with four types of model viruses. We found RB-UV was a very effective procedure for inactivating viruses of amnion and chorion tissues, which could be used as a complementary method to Co-60 irradiation. In addition, we also screened the washing solutions and drying methods for the retention of growth factors.
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Affiliation(s)
- Shang Zhang
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
- *Correspondence: Shang Zhang,
| | - Lichang Gao
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
| | - Pin Wang
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
| | - Yuyan Ma
- Department of Gynecology and Obstetrics, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiaoliang Wang
- Liangchen Biotechnology (Suzhou) Co., Ltd., Suzhou, China
| | - Jie Wen
- Liangchen Biotechnology (Suzhou) Co., Ltd., Suzhou, China
| | - Yu Cheng
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
| | - Changlin Liu
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
| | - Chunxia Zhang
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
| | - Changfeng Liu
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
| | - Yongli Yan
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
| | - Chengru Zhao
- Success Bio-Tech Co., Ltd., Biomedical Material Engineering Laboratory of Shandong Province, Jinan, China
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8
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Lotens A, Prudent M, Rapaille A. Antioxidants in single methylene-blue-treated plasma units cannot be used to predict pathogen inactivation treatment success. Vox Sang 2022; 117:937-942. [PMID: 35445418 DOI: 10.1111/vox.13273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 03/08/2022] [Accepted: 03/08/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Measurement of antioxidant power (AOP) can be useful to validate the execution of the pathogen inactivation (PI) treatment of plasma units. The aim of this study was to evaluate the Theraflex technology for plasma units routinely used in Belgium. MATERIALS AND METHODS AOP was tested on plasma units treated by Theraflex with various non-complete treatment scenarios. AOP was quantified electrochemically using disposable devices and was expressed as equivalent ascorbic acid concentration. RESULTS During a complete PI treatment, AOP rose from 195 ± 32 to 230 ± 42 μmol/L eq. ascorbic acid after addition of methylene blue (MB), and decreased to 192 ± 30 μmol/L eq. ascorbic acid after illumination and finally to 177 ± 27 μmol/L eq. ascorbic acid after final filtration. Without MB, the final filtration had no effect on the plasma AOP (197 ± 22 μmol/L eq. ascorbic acid before filtration and 194 ± 22 μmol/L eq. ascorbic acid after filtration). With no MB and no illumination, there was no significant difference between the plasma AOP at the beginning (188 ± 23 μmol/L eq. ascorbic acid) and at the end of the process (179 ± 21 μmol/L eq. ascorbic acid). CONCLUSION AOP measurement may not indicate the effectiveness of the PI treatment.
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Affiliation(s)
- Anaïs Lotens
- Blood Service, Belgian Red Cross, Namur, Belgium
| | - Michel Prudent
- Laboratoire de Recherche sur les Produits Sanguins, Recherche et Développement Produits, Transfusion Interrégionale CRS, Epalinges, Switzerland.,Faculté de Biologie et de Médecine, Université de Lausanne, Lausanne, Switzerland.,Center for Research and Innovation in Clinical Pharmaceutical Sciences, Institute of Pharmaceutical Sciences of Western Switzerland, University Hospital and University of Lausanne, Lausanne, Switzerland
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9
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Mirhashemi A, Janani R, Bahrami R, Chiniforush N. Evaluation of the photodynamic therapy with riboflavin and curcumin on shear bond strength of orthodontic bracket; An invitro study. Photodiagnosis Photodyn Ther 2022; 38:102787. [DOI: 10.1016/j.pdpdt.2022.102787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/06/2022] [Accepted: 02/25/2022] [Indexed: 02/07/2023]
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10
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Trufanov SV, Shakhbazyan NP, Zaitsev AV, Rozinova VN. [Surgical management of infectious keratitis]. Vestn Oftalmol 2021; 137:128-135. [PMID: 34410068 DOI: 10.17116/oftalma2021137041128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Infectious keratitis is one of the most common causes of blindness worldwide. Despite the existence of a wide arsenal of quite effective antimicrobial drugs, some forms of bacterial and viral keratitis are resistant. Advanced acanthamoeba and mycotic lesions of the cornea, as well as mixed forms of infection usually do not respond well to conservative treatment. In the absence of positive dynamics from the applied etiotropic therapy with observed further progression of the microbial process, there is a risk of corneal perforation and spread of infection to the sclera or deep ocular structures with a high probability of irreversible functional disorders or anatomical death of the eye. In such cases, a timely transition to surgical treatment is necessary in order to maintain structural integrity of the eyeball. For this purpose, corneal crosslinking, microdiathermocoagulation, tissue adhesive, autoconjunctival plasty, amniotic membrane, corneoscleral flap coating, various combinations of these methods, as well as therapeutic keratoplasty are used most often in clinical practice. The choice depends on the etiology, size and depth of the lesion, its localization, prognosis of visual outcomes, somatic status of the patient. Therapeutic keratoplasty is the most radical and effective method of surgical intervention that allows eradication of the infectious focus and best possible restoration of the structural integrity of the eyeball. However, in some cases due to inaccessibility of donor material or high risks of the surgery and non-transparent graft engraftment, it is advised to use alternative surgical approaches, and keratoplasty, if necessary, should be carried out for optical purposes at a further, "quiet" period.
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Affiliation(s)
- S V Trufanov
- Research Institute of Eye Diseases, Moscow, Russia
| | | | - A V Zaitsev
- Research Institute of Eye Diseases, Moscow, Russia
| | - V N Rozinova
- Research Institute of Eye Diseases, Moscow, Russia
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11
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Munoz M, El-Khoury A, Eren Cimenci C, Gonzalez-Gomez M, Hunter RA, Lomboni D, Variola F, Rotstein BH, Vono LLR, Rossi LM, Edwards AM, Alarcon EI. Riboflavin Surface Modification of Poly(vinyl chloride) for Light-Triggered Control of Bacterial Biofilm and Virus Inactivation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:32251-32262. [PMID: 34181389 DOI: 10.1021/acsami.1c08042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Poly(vinyl chloride) (PVC) is the most used biomedical polymer worldwide. PVC is a stable and chemically inert polymer. However, microorganisms can colonize PVC producing biomedical device-associated infections. While surface modifications of PVC can help improve the antimicrobial and antiviral properties, the chemically inert nature of PVC makes those modifications challenging and potentially toxic. In this work, we modified the PVC surface using a derivative riboflavin molecule that was chemically tethered to a plasma-treated PVC surface. Upon a low dosage of blue light, the riboflavin tethered to the PVC surface became photochemically activated, allowing for Pseudomonas aeruginosa bacterial biofilm and lentiviral in situ eradication.
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Affiliation(s)
- Marcelo Munoz
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y4W7, Canada
| | - Antony El-Khoury
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y4W7, Canada
| | - Cagla Eren Cimenci
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y4W7, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Mayte Gonzalez-Gomez
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y4W7, Canada
| | - Robert A Hunter
- Ottawa-Carleton Institute for Biomedical Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - David Lomboni
- Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Fabio Variola
- Department of Mechanical Engineering, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Benjamin H Rotstein
- Molecular Imaging Probes and Radiochemistry Laboratory, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, Ontario K1Y4W7, Canada
| | - Lucas L R Vono
- Institute of Chemistry, University of São Paulo, USP, São Paulo, SP 05508-000, Brazil
| | - Liane M Rossi
- Institute of Chemistry, University of São Paulo, USP, São Paulo, SP 05508-000, Brazil
| | - Ana Maria Edwards
- Departamento de Química Física, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago 7820244, Chile
| | - Emilio I Alarcon
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y4W7, Canada
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine University of Ottawa, Ottawa, Ontario K1H8M5, Canada
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12
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Antibacterial potency of riboflavin-mediated photodynamic inactivation against Salmonella and its influences on tuna quality. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111462] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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13
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Ragan IK, Hartson LM, Dutt TS, Obregon-Henao A, Maison RM, Gordy P, Fox A, Karger BR, Cross ST, Kapuscinski ML, Cooper SK, Podell BK, Stenglein MD, Bowen RA, Henao-Tamayo M, Goodrich RP. A Whole Virion Vaccine for COVID-19 Produced via a Novel Inactivation Method and Preliminary Demonstration of Efficacy in an Animal Challenge Model. Vaccines (Basel) 2021; 9:vaccines9040340. [PMID: 33916180 PMCID: PMC8066708 DOI: 10.3390/vaccines9040340] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 12/16/2022] Open
Abstract
The COVID-19 pandemic has generated intense interest in the rapid development and evaluation of vaccine candidates for this disease and other emerging diseases. Several novel methods for preparing vaccine candidates are currently undergoing clinical evaluation in response to the urgent need to prevent the spread of COVID-19. In many cases, these methods rely on new approaches for vaccine production and immune stimulation. We report on the use of a novel method (SolaVAX) for production of an inactivated vaccine candidate and the testing of that candidate in a hamster animal model for its ability to prevent infection upon challenge with SARS-CoV-2 virus. The studies employed in this work included an evaluation of the levels of neutralizing antibody produced post-vaccination, levels of specific antibody sub-types to RBD and spike protein that were generated, evaluation of viral shedding post-challenge, flow cytometric and single cell sequencing data on cellular fractions and histopathological evaluation of tissues post-challenge. The results from this preliminary evaluation provide insight into the immunological responses occurring as a result of vaccination with the proposed vaccine candidate and the impact that adjuvant formulations, specifically developed to promote Th1 type immune responses, have on vaccine efficacy and protection against infection following challenge with live SARS-CoV-2. This data may have utility in the development of effective vaccine candidates broadly. Furthermore, the results of this preliminary evaluation suggest that preparation of a whole virion vaccine for COVID-19 using this specific photochemical method may have potential utility in the preparation of one such vaccine candidate.
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Affiliation(s)
- Izabela K Ragan
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA; (I.K.R.); (R.M.M.); (P.G.); (R.A.B.)
| | - Lindsay M Hartson
- Infectious Disease Research Center, Colorado State University, Fort Collins, CO 80521, USA;
| | - Taru S Dutt
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Andres Obregon-Henao
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Rachel M Maison
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA; (I.K.R.); (R.M.M.); (P.G.); (R.A.B.)
| | - Paul Gordy
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA; (I.K.R.); (R.M.M.); (P.G.); (R.A.B.)
| | - Amy Fox
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Burton R Karger
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Shaun T Cross
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Marylee L Kapuscinski
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Sarah K Cooper
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Brendan K Podell
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Mark D Stenglein
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Richard A Bowen
- Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA; (I.K.R.); (R.M.M.); (P.G.); (R.A.B.)
| | - Marcela Henao-Tamayo
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
| | - Raymond P Goodrich
- Infectious Disease Research Center, Colorado State University, Fort Collins, CO 80521, USA;
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA; (T.S.D.); (A.O.-H.); (A.F.); (B.R.K.); (S.T.C.); (M.L.K.); (S.K.C.); (B.K.P.); (M.D.S.); (M.H.-T.)
- Correspondence:
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14
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McCullough J. Pathogen Reduced Blood Products. Transfus Med 2021. [DOI: 10.1002/9781119599586.ch14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Kamran MA, Qasim M, Udeabor SE, Hameed MS, Mannakandath ML, Alshahrani I. Impact of riboflavin mediated photodynamic disinfection around fixed orthodontic system infected with oral bacteria. Photodiagnosis Photodyn Ther 2021; 34:102232. [PMID: 33631380 DOI: 10.1016/j.pdpdt.2021.102232] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 02/15/2021] [Accepted: 02/19/2021] [Indexed: 12/20/2022]
Abstract
PURPOSE The aim of this laboratory study was to investigate the amount of bacterial destruction through riboflavin mediated photodynamic therapy (PDT) around fixed orthodontic devices by using the two strains of bacteria Streptococcus mutans and Streptococcus sanguinis. MATERIALS AND METHODS A total of 80 metallic brackets were divided into four groups consisting of 20 brackets each. Group-I: riboflavin + LED irradiation; Group-II: riboflavin alone; Group-III: immersion in 0.2 % chlorhexidine gluconate solution and Group-IV: not submitted to any treatment. All metallic brackets were immersed in the standard bacterial solutions and incubated at 48 h. All samples were subjected to MTT assay for microbial cell viability testing after treatment. After 24 h of incubation, biofilms adhered on the mesh of metallic brackets after treatment were assessed by confocal laser microscopy. The total CFU/mL was estimated, and the results were log-transformed (log10) and analyzed using one-way analysis of variance and Tukey-Kramer test. P-value was set to <0.05 that indicated statistical significance. RESULTS The samples from group-IV showed the highest amount of relative biofilm viability compared to any other group while group-I (PDT) showed the least viability of the two bacterial strains studied (p < 0.05). Group-I showed no significant difference when compared with group-III (chlorhexidine) (p > 0.05). The biofilms on the samples from group-II and group-IV were largely viable indicating thick green staining across the mesh of the brackets. Among the group-III samples, there were predominantly dead cells as compared to the live cell staining. A considerable amount of red staining was observed with noticeable less green staining in group-I samples. CONCLUSION This laboratory investigation revealed that riboflavin mediated PDT significantly reduced the amounts of S. mutans and S. sanguinis around the orthodontic brackets.
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Affiliation(s)
- Muhammad Abdullah Kamran
- Department of Pediatric and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Saudi Arabia.
| | - Muhammad Qasim
- Department of Restorative Dental Sciences (Operative Dentistry), College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Samuel Ebele Udeabor
- Department of Oral and Maxillofacial Surgery, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Mohammad Shahul Hameed
- Department of Diagnostic Sciences and Oral Biology, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Master Luqman Mannakandath
- Department of Oral Diagnosis and Oral Biology, College of Dentistry, King Khalid University, Abha, Saudi Arabia
| | - Ibrahim Alshahrani
- Department of Pediatric and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Saudi Arabia
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Del Mondo A, Smerilli A, Sané E, Sansone C, Brunet C. Challenging microalgal vitamins for human health. Microb Cell Fact 2020; 19:201. [PMID: 33138823 PMCID: PMC7607653 DOI: 10.1186/s12934-020-01459-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 10/17/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Vitamins' deficiency in humans is an important threat worldwide and requires solutions. In the concept of natural biofactory for bioactive compounds production, microalgae represent one of the most promising targets filling many biotechnological applications, and allowing the development of an eco-sustainable production of natural bioactive metabolites. Vitamins are probably one of the cutting edges of microalgal diversity compounds. MAIN TEXT Microalgae can usefully provide many of the required vitamins in humans, more than terrestrial plants, for instance. Indeed, vitamins D and K, little present in many plants or fruits, are instead available from microalgae. The same occurs for some vitamins B (B12, B9, B6), while the other vitamins (A, C, D, E) are also provided by microalgae. This large panel of vitamins diversity in microalgal cells represents an exploitable platform in order to use them as natural vitamins' producers for human consumption. This study aims to provide an integrative overview on vitamins content in the microalgal realm, and discuss on the great potential of microalgae as sources of different forms of vitamins to be included as functional ingredients in food or nutraceuticals for the human health. We report on the biological roles of vitamins in microalgae, the current knowledge on their modulation by environmental or biological forcing and on the biological activity of the different vitamins in human metabolism and health protection. CONCLUSION Finally, we critically discuss the challenges for promoting microalgae as a relevant source of vitamins, further enhancing the interests of microalgal "biofactory" for biotechnological applications, such as in nutraceuticals or cosmeceuticals.
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Affiliation(s)
- Angelo Del Mondo
- Stazione Zoologica Anton Dohrn, Istituto Nazionale Di Biologia, Ecologia e Biotecnologie marine, Villa Comunale, 80121, Napoli, Italy
| | - Arianna Smerilli
- Stazione Zoologica Anton Dohrn, Istituto Nazionale Di Biologia, Ecologia e Biotecnologie marine, Villa Comunale, 80121, Napoli, Italy
| | - Elisabet Sané
- Stazione Zoologica Anton Dohrn, Istituto Nazionale Di Biologia, Ecologia e Biotecnologie marine, Villa Comunale, 80121, Napoli, Italy
| | - Clementina Sansone
- Stazione Zoologica Anton Dohrn, Istituto Nazionale Di Biologia, Ecologia e Biotecnologie marine, Villa Comunale, 80121, Napoli, Italy.
| | - Christophe Brunet
- Stazione Zoologica Anton Dohrn, Istituto Nazionale Di Biologia, Ecologia e Biotecnologie marine, Villa Comunale, 80121, Napoli, Italy
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Analysis of photoreactivity and phototoxicity of riboflavin's analogue 3MeTARF. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 205:111820. [DOI: 10.1016/j.jphotobiol.2020.111820] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 01/24/2020] [Accepted: 02/08/2020] [Indexed: 01/26/2023]
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18
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Lu W, Delaney M, Flegel WA, Ness P, Ratcliffe N, Triulzi DJ, Yazer MH, Ziman A, Dunbar NM. How do you… decide which platelet bacterial risk mitigation strategy to select for your hospital-based transfusion service? Transfusion 2020; 60:675-681. [PMID: 32027394 PMCID: PMC7131880 DOI: 10.1111/trf.15693] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 01/12/2023]
Abstract
The United States Food and Drug Administration Final Guidance for Industry titled, "Bacterial Risk Control Strategies for Blood Collection Establishments and Transfusion Services to Enhance the Safety and Availability of Platelets for Transfusion" provides nine strategies for platelet bacterial risk mitigation. Even if it is assumed all strategies are comparable in terms of safety and efficacy, the decision of which to implement remains challenging. Some additional factors that warrant evaluation before selecting a strategy include the financial impact, process for implementation, logistics upon implementation, institutional acceptance by blood bank staff, administration and clinicians, and effect on platelet availability. To assist with this difficult choice, a panel of transfusion service physicians who have expertise on the topic and have already selected strategies for their transfusion services were recruited to provide varied perspectives. In addition, the use of a decision-making tool that objectively evaluates defined criteria for assessment of the nine strategies is described.
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Affiliation(s)
- Wen Lu
- Robert Tomsich Pathology & Laboratory Medicine
Institute, Cleveland Clinic, Cleveland, Ohio
| | - Meghan Delaney
- Pathology and Laboratory Medicine, Children’s
National Medical Center, Washington, DC
| | - Willy A. Flegel
- Department of Transfusion Medicine, NIH Clinical Center,
National Institutes of Health, Bethesda
| | - Paul Ness
- Department of Pathology, Johns Hopkins University School of
Medicine, Baltimore, Maryland
| | - Nora Ratcliffe
- Pathology & Laboratory Medicine, White River Junction
VA Medical Center, White River Junction, Vermont
| | - Darrell J. Triulzi
- Centralized Transfusion Service, University of Pittsburgh,
Pittsburgh, Pennsylvania
| | - Mark H. Yazer
- Centralized Transfusion Service, University of Pittsburgh,
Pittsburgh, Pennsylvania
| | - Alyssa Ziman
- Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service,
Department of Pathology and Laboratory Medicine, David Geffen School of Medicine,
University of California Los Angeles, Los Angeles, California
| | - Nancy M. Dunbar
- Department of Pathology and Laboratory Medicine, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire
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19
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Zhu L, Li C, Wang D. A novel ultraviolet illumination used in riboflavin photochemical method to inactivate drug-resistant bacteria in blood components. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 204:111782. [PMID: 32062389 DOI: 10.1016/j.jphotobiol.2020.111782] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Ultraviolet (UV) fluorescent lamp (FL) was applied in mainstream riboflavin photochemical method (RPM) to inactivate pathogens in blood components. Low UV irradiance emitted by UV-FL resulted in more time to achieve effective inactivation. MATERIALS AND METHODS A novel light emitting diode (LED) UV illumination with adjustable irradiance was developed by us. Two strains of drug-resistant bacteria (DRB), pan-drug resistant Acinetobacter baumannii (PDRAB) and methicillin-resistant Staphylococcus aureus (MRSA) were cultured and used for evaluating the inactivation effectiveness of RPM using UV-LED or UV-FL against DRB in plasma or platelets. Three plasma factors and four platelet parameters were measured after treatments. RESULTS There was a linear relationship between UV-LED irradiance and electric current, the minimum UV irradiance was 24 mW/cm2, and the maximum was 258 mW/cm2. At the same UV dose of 15 J/cm2, inactivation effectiveness of UV-LED with 258 mW/cm2 against PDRAB in plasma or platelets were comparable to that of UV-FL with 16 mW/cm2, both above 98%. UV-FL treatment required 10-15 min, but UV-LED only required 1-2 min. However, MRSA showed a resistance to UV-LED (inactivation effectiveness was around 40%) compared with UV-FL (inactivation effectiveness was above 98%). The retention of fibrinogen, factor V, factor VII in plasma and platelet counts in platelets with UV-LED treatment were significantly higher than UV-FL at the same UV dose. CONCLUSION The treatment of RPM using UV-LED with high UV irradiance was able to dramatically shorten inactivation time against PDRAB in plasma or platelets and improve retention of blood components compared with UV-FL.
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Affiliation(s)
- Liguo Zhu
- Institute of Blood Transfusion, Peking Union Medical College and Chinese Academy of Medical Sciences, No.26 Huacai Road, Chenghua District, Chengdu, China.
| | - Changqing Li
- Institute of Blood Transfusion, Peking Union Medical College and Chinese Academy of Medical Sciences, No.26 Huacai Road, Chenghua District, Chengdu, China.
| | - Deqing Wang
- Department of Blood Transfusion, Chinese PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, China.
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Abstract
Allogeneic platelets collected for transfusion treated with pathogen reduction technology (PRT), which has been available in some countries for more than a decade, are now increasingly available in the United States (US). The implementation of PRT-treated platelets, also known as pathogen-reduced platelets (PRPs), has been spurred by the need to further decrease the risk of sepsis associated with bacterial contamination coupled with the potential of this technology to reduce the risk of infections due to already recognized, new, and emerging infectious agents. This article will review available PRP products, examine their benefits, highlight unresolved questions surrounding this technology, and summarize pivotal research studies that have compared transfusion outcomes (largely in adult patients) for PRPs with non-PRT-treated conventional platelets (CPs). In addition, studies describing the use of PRPs in pediatric patients and work done on the association between PRPs and HLA alloimmunization are discussed. As new data emerge, it is critical to re-evaluate the risks and benefits of existing PRPs and newer technologies and reassess the financial implications of adopting PRPs to guide our decision-making process for the implementation of transfusing PRPs.
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Affiliation(s)
- Wen Lu
- Section of Transfusion Medicine, Robert Tomsich Pathology & Laboratory Medicine Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Mark Fung
- Department of Pathology and Laboratory Medicine, University of Vermont Medical Center, Burlington, VT, USA
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Atreya C, Glynn S, Busch M, Kleinman S, Snyder E, Rutter S, AuBuchon J, Flegel W, Reeve D, Devine D, Cohn C, Custer B, Goodrich R, Benjamin RJ, Razatos A, Cancelas J, Wagner S, Maclean M, Gelderman M, Cap A, Ness P. Proceedings of the Food and Drug Administration public workshop on pathogen reduction technologies for blood safety 2018 (Commentary, p. 3026). Transfusion 2019; 59:3002-3025. [PMID: 31144334 PMCID: PMC6726584 DOI: 10.1111/trf.15344] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 05/06/2019] [Accepted: 05/06/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Chintamani Atreya
- US Food and Drug Administration, Center for Biologics Evaluation and ResearchOffice of Blood Research and ReviewSilver SpringMaryland
| | - Simone Glynn
- National Heart Lung and Blood InstituteBethesdaMarylandUSA
| | | | | | - Edward Snyder
- Blood BankYale‐New Haven HospitalNew HavenConnecticut
| | - Sara Rutter
- Department of Pathology and Laboratory MedicineYale School of MedicineNew HavenConnecticut
| | - James AuBuchon
- Department of PathologyDartmouth‐Hitchcock Medical CenterLebanonNew Hampshire
| | - Willy Flegel
- Department of Transfusion MedicineNIH Clinical CenterBethesdaMaryland
| | - David Reeve
- Blood ComponentsAmerican Red CrossRockvilleMaryland
| | - Dana Devine
- Department of Lab Medicine and PathologyUniversity of Minnesota Medical CenterMinneapolisMinnesota
| | - Claudia Cohn
- Department of Lab Medicine and PathologyUniversity of Minnesota Medical CenterMinneapolisMinnesota
| | - Brian Custer
- Vitalant Research InstituteSan FranciscoCalifornia
| | - Raymond Goodrich
- Department of Microbiology, Immunology and PathologyColorado State UniversityFort CollinsColorado
| | | | | | - Jose Cancelas
- Hoxworth Blood CenterUniversity of Cincinnati HealthCincinnatiOhio
| | | | - Michelle Maclean
- The Robertson Trust Laboratory for Electronic Sterilisation Technologies (ROLEST)University of StrathclydeGlasgowScotland
| | - Monique Gelderman
- Department of HematologyCenter for Biologics Evaluation and Research, US Food and Drug AdministrationSilver SpringMaryland
| | - Andrew Cap
- U.S. Army Institute of Surgical ResearchSan AntonioTexas
| | - Paul Ness
- Blood BankJohns Hopkins HospitalBaltimoreMaryland
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Wiehe A, O'Brien JM, Senge MO. Trends and targets in antiviral phototherapy. Photochem Photobiol Sci 2019; 18:2565-2612. [PMID: 31397467 DOI: 10.1039/c9pp00211a] [Citation(s) in RCA: 152] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Photodynamic therapy (PDT) is a well-established treatment option in the treatment of certain cancerous and pre-cancerous lesions. Though best-known for its application in tumor therapy, historically the photodynamic effect was first demonstrated against bacteria at the beginning of the 20th century. Today, in light of spreading antibiotic resistance and the rise of new infections, this photodynamic inactivation (PDI) of microbes, such as bacteria, fungi, and viruses, is gaining considerable attention. This review focuses on the PDI of viruses as an alternative treatment in antiviral therapy, but also as a means of viral decontamination, covering mainly the literature of the last decade. The PDI of viruses shares the general action mechanism of photodynamic applications: the irradiation of a dye with light and the subsequent generation of reactive oxygen species (ROS) which are the effective phototoxic agents damaging virus targets by reacting with viral nucleic acids, lipids and proteins. Interestingly, a light-independent antiviral activity has also been found for some of these dyes. This review covers the compound classes employed in the PDI of viruses and their various areas of use. In the medical area, currently two fields stand out in which the PDI of viruses has found broader application: the purification of blood products and the treatment of human papilloma virus manifestations. However, the PDI of viruses has also found interest in such diverse areas as water and surface decontamination, and biosafety.
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Affiliation(s)
- Arno Wiehe
- biolitec research GmbH, Otto-Schott-Str. 15, 07745 Jena, Germany. and Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Jessica M O'Brien
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St. James's Hospital, Dublin 8, Ireland.
| | - Mathias O Senge
- Medicinal Chemistry, Trinity Translational Medicine Institute, Trinity Centre for Health Sciences, Trinity College Dublin, The University of Dublin, St. James's Hospital, Dublin 8, Ireland.
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23
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Dimberg LY, Doane SK, Yonemura S, Reddy HL, Hovenga N, Gosney EJ, Tran M, Wilkinson S, Goodrich RP, Marschner S. Red Blood Cells Derived from Whole Blood Treated with Riboflavin and UV Light Maintain Adequate Cell Quality through 21 Days of Storage. Transfus Med Hemother 2019; 46:240-247. [PMID: 31700506 PMCID: PMC6739696 DOI: 10.1159/000495257] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 11/09/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The Mirasol system for whole blood (WB) is a non-toxic, non-mutagenic pathogen reduction technology (PRT) that treats WB units with riboflavin (vitamin B2) and ultraviolet (UV) light to alter nucleic acids, thereby reducing pathogen infectivity and inactivating white blood cells. This study evaluates the quality of red blood cells (RBCs) derived from WB treated with the Mirasol system. STUDY DESIGN AND METHODS Paired units of WB were collected from 61 healthy donors. One unit per donor was treated with riboflavin and UV light and the other was used as an untreated control. RBCs were processed from the WB units and stored in AS-3 at 1-6°C for 21 days and sampled for in vitro analyses of RBC quality parameters. RESULTS Several statistically significant differences were observed between test and control units, but values were overall within normal clinical ranges. After leukoreduction, the residual leukocyte count and RBC recovery met FDA requirements. The RBC units derived from treated WB maintained haemolysis below 1% through 21 days of storage. CONCLUSION RBCs derived from WB treated with the Mirasol system meet accepted FDA guidelines for RBC quality through 21 days of storage at 1-6°C.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Raymond P. Goodrich
- Infectious Disease Research Center, Colorado State University, Fort Collins, Colorado, USA
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24
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Rebulla P. The long and winding road to pathogen reduction of platelets, red blood cells and whole blood. Br J Haematol 2019; 186:655-667. [PMID: 31304588 DOI: 10.1111/bjh.16093] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 06/22/2019] [Indexed: 02/07/2023]
Abstract
Pathogen reduction technologies (PRTs) have been developed to further reduce the current very low risks of acquiring transfusion-transmitted infections and promptly respond to emerging infectious threats. An entire portfolio of PRTs suitable for all blood components is not available, but the field is steadily progressing. While PRTs for plasma have been used for many years, PRTs for platelets, red blood cells (RBC) and whole blood (WB) were developed more slowly, due to difficulties in preserving cell functions during storage. Two commercial platelet PRTs use ultra violet (UV) A and UVB light in the presence of amotosalen or riboflavin to inactivate pathogens' nucleic acids, while a third experimental PRT uses UVC light only. Two PRTs for WB and RBC have been tested in experimental clinical trials with storage limited to 21 or 35 days, due to unacceptably high RBC storage lesion beyond these time limits. This review summarizes pre-clinical investigations and selected outcomes from clinical trials using the above PRTs. Further studies are warranted to decrease cell storage lesions after PRT treatment and to test PRTs in different medical and surgical conditions. Affordability remains a major administrative obstacle to PRT use, particularly so in geographical regions with higher risks of transfusion-transmissible infections.
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Affiliation(s)
- Paolo Rebulla
- Department of Transfusion Medicine and Haematology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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Suwannasom N, Smuda K, Kloypan C, Kaewprayoon W, Baisaeng N, Prapan A, Chaiwaree S, Georgieva R, Bäumler H. Albumin Submicron Particles with Entrapped Riboflavin-Fabrication and Characterization. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E482. [PMID: 30934597 PMCID: PMC6474188 DOI: 10.3390/nano9030482] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/15/2019] [Accepted: 03/19/2019] [Indexed: 01/19/2023]
Abstract
Although riboflavin (RF) belongs to the water-soluble vitamins of group B, its solubility is low. Therefore, the application of micro-formulations may help to overcome this limiting factor for the delivery of RF. In this study we immobilized RF in newly developed albumin submicron particles prepared using the Co-precipitation Crosslinking Dissolution technique (CCD-technique) of manganese chloride and sodium carbonate in the presence of human serum albumin (HSA) and RF. The resulting RF containing HSA particles (RF-HSA-MPs) showed a narrow size distribution in the range of 0.9 to 1 μm, uniform peanut-like morphology, and a zeta-potential of -15 mV. In vitro release studies represented biphasic release profiles of RF in a phosphate buffered saline (PBS) pH 7.4 and a cell culture medium (RPMI) 1640 medium over a prolonged period. Hemolysis, platelet activation, and phagocytosis assays revealed a good hemocompatibility of RF-HSA-MPs.
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Affiliation(s)
- Nittiya Suwannasom
- Institute of Transfusion Medicine, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
- School of Medical Sciences, University of Phayao, Phayao 56000, Thailand.
| | - Kathrin Smuda
- Institute of Transfusion Medicine, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
| | - Chiraphat Kloypan
- Institute of Transfusion Medicine, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
- School of Allied Health Sciences, University of Phayao, Phayao 56000, Thailand.
| | - Waraporn Kaewprayoon
- Institute of Transfusion Medicine, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
- Faculty of Pharmacy, Payap University, Chiang Mai 50000, Thailand.
| | - Nuttakorn Baisaeng
- School of Pharmaceutical Sciences, University of Phayao, Phayao 56000, Thailand.
| | - Ausanai Prapan
- Institute of Transfusion Medicine, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
- Faculty of Allied Health Sciences, Naresuan University, Phitsanulok 65000, Thailand.
| | - Saranya Chaiwaree
- Institute of Transfusion Medicine, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
- Faculty of Pharmacy, Payap University, Chiang Mai 50000, Thailand.
| | - Radostina Georgieva
- Institute of Transfusion Medicine, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
- Department of Medical Physics, Biophysics and Radiology, Medical Faculty, Trakia University, 6000 Stara Zagora, Bulgaria.
| | - Hans Bäumler
- Institute of Transfusion Medicine, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany.
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Hemostatic efficacy of pathogen-inactivated vs untreated platelets: a randomized controlled trial. Blood 2018; 132:223-231. [DOI: 10.1182/blood-2018-02-831289] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 04/25/2018] [Indexed: 11/20/2022] Open
Abstract
Key Points
Pathogen-inactivated platelets were noninferior in preventing bleeding only in intention-to-treat analysis. In contrast to animal models, alloimmunization could not be prevented when using pathogen-inactivated platelets.
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Feys HB, Van Aelst B, Compernolle V. Biomolecular Consequences of Platelet Pathogen Inactivation Methods. Transfus Med Rev 2018; 33:29-34. [PMID: 30021699 DOI: 10.1016/j.tmrv.2018.06.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/12/2018] [Accepted: 06/12/2018] [Indexed: 12/21/2022]
Abstract
Pathogen inactivation (PI) for platelet concentrates (PC) is a fairly recent development in transfusion medicine that is intended to decrease infectious disease transmission from the donor to the receiving patient. Effective inactivation of viruses, bacteria and eukaryotic parasites adds a layer of safety, protecting the blood supply against customary and emerging pathogens. Three PI methods have been described for platelets. These are based on photochemical damage of nucleic acids which prevents replication of most infectious pathogens and contaminating donor leukocytes. Because platelets do not replicate, the collateral damage to platelet function is considered low to non-existing. This is disputable however because photochemistry is not specific for nucleic acids and significantly affects platelet biomolecules as well. The impact of these biomolecular changes on platelet function and hemostasis is not well understood, but is increasingly being studied. The results of these studies can help explain current and future clinical observations with PI platelets, including the impact on transfusion yield and bleeding. This review summarizes the biomolecular effects of PI treatment on platelets. We conclude that despite a comparable principle of photochemical inactivation, all three methods affect platelets in different ways. This knowledge can help blood banks and transfusion specialists to guide their choice when considering the implementation or clinical use of PI treated platelets.
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Affiliation(s)
- Hendrik B Feys
- Transfusion Research Center, Belgian Red Cross-Flanders, Ghent, Belgium; Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium.
| | - Britt Van Aelst
- Transfusion Research Center, Belgian Red Cross-Flanders, Ghent, Belgium; Blood Service of the Belgian Red Cross-Flanders, Mechelen, Belgium
| | - Veerle Compernolle
- Transfusion Research Center, Belgian Red Cross-Flanders, Ghent, Belgium; Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium; Blood Service of the Belgian Red Cross-Flanders, Mechelen, Belgium
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Atia R, Jouve L, Knoeri J, Georgeon C, Laroche L, Borderie V, Bouheraoua N. [Corneal collagen cross-linking to treat infectious keratitis]. J Fr Ophtalmol 2018; 41:560-568. [PMID: 29903589 DOI: 10.1016/j.jfo.2017.12.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 11/24/2022]
Abstract
Infectious keratitis are a frequent cause of ocular morbidity. Today, new treatments are necessary to combat the emergence of antibiotic resistant germs. Corneal collagen cross-linking has been suggested to treat corneal infectious (PACK-CXL). Its action would be both antimicrobial and protective for the cornea, increasing its biochemical resistence to proteolytic enzymes. In vivo, PACK-CXL might demonstrate good efficacy against bacterial keratitis, contrary to herpetic keratitis for which it is contraindicated. For fungal or amoebic keratitis, results are uncertain regarding its safety and efficacy. The purpose of this paper is to clarify the use of corneal collagen cross-linking to treat infectious keratitis.
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Affiliation(s)
- R Atia
- Service d'ophtalmologie 5, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France
| | - L Jouve
- Service d'ophtalmologie 5, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France
| | - J Knoeri
- Service d'ophtalmologie 5, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France
| | - C Georgeon
- Service d'ophtalmologie 5, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France
| | - L Laroche
- Service d'ophtalmologie 5, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France; Inserm UMR S 968, université Pierre-et-Marie-Curie-Paris-VI, institut de la vision, 75012 Paris, France
| | - V Borderie
- Service d'ophtalmologie 5, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France; Inserm UMR S 968, université Pierre-et-Marie-Curie-Paris-VI, institut de la vision, 75012 Paris, France
| | - N Bouheraoua
- Service d'ophtalmologie 5, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France; Inserm UMR S 968, université Pierre-et-Marie-Curie-Paris-VI, institut de la vision, 75012 Paris, France.
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Goodrich RP, Segatchian J. Special considerations for the use of pathogen reduced blood components in pediatric patients: An overview. Transfus Apher Sci 2018; 57:374-377. [DOI: 10.1016/j.transci.2018.05.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bello-López JM, Delgado-Balbuena L, Rojas-Huidobro D, Rojo-Medina J. Treatment of platelet concentrates and plasma with riboflavin and UV light: Impact in bacterial reduction. Transfus Clin Biol 2018; 25:197-203. [PMID: 29656962 DOI: 10.1016/j.tracli.2018.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Accepted: 03/16/2018] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Transfusion of hemocomponents is essential for clinical and surgical procedures and therefore their safety has increased. An option for pathogen reduction includes the combination of riboflavin and UV light. To our knowledge, there are no studies in Latin America that demonstrate the effectiveness of the pathogen reduction in hemocomponents. The objective of this work was to evaluate the efficiency of a pathogens reduction system in platelets concentrates (PC) and plasma. MATERIALS AND METHODS PC and plasma were contaminated with Escherichia coli, Klebsiella pneumoniae, Streptococcus pyogenes and Staphylococcus epidermidis at 104 to 106 CFU and subjected to bacterial reduction. After bacterial reduction, hemocomponents were subjected to cultivation of surviving bacteria by automated method and classical colonies quantification. Additionally, quality control testing was performed in order to confirm the integrity of platelets and coagulation laboratory values in plasma before and after bacterial reduction. RESULTS The bacterial death in PC/plasma was expressed by Logarithmic Reduction Value as follows: for both strains (E. coli and S. pyogenes) 4/4, 5/5 and 6/6; for K. pneumoniae 2.54/2.23, 2.94/2.22 and 3.44/2.98, for S. epidermidis 4/4, 3.11/5 and 3.23/4.19, for 104, 105 and 106 CFU, respectively. In PC and plasma, platelet count, pH (at 22°C), activated partial thromboplastin time (aPTT), prothrombin time (PT), fibrinogen, factor VIII and total proteins (TP) were slightly modified. CONCLUSIONS UV light with riboflavin is able to reduce an important number of pathogens in hemocomponents; however, the bacterial reduction is influenced by the nature and quantity of the pathogen.
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Affiliation(s)
- J M Bello-López
- Centro Nacional de la Transfusión Sanguínea, Av. Othón de Mendizábal 195, Zacatenco, Gustavo A. Madero, 07360 México City, Mexico; Hospital Juárez de México, Av. Instituto Politécnico Nacional 5160, Zacatenco, Gustavo A. Madero, 07360 México City, Mexico.
| | - L Delgado-Balbuena
- Centro Nacional de la Transfusión Sanguínea, Av. Othón de Mendizábal 195, Zacatenco, Gustavo A. Madero, 07360 México City, Mexico
| | - D Rojas-Huidobro
- Centro Nacional de la Transfusión Sanguínea, Av. Othón de Mendizábal 195, Zacatenco, Gustavo A. Madero, 07360 México City, Mexico
| | - J Rojo-Medina
- Centro Nacional de la Transfusión Sanguínea, Av. Othón de Mendizábal 195, Zacatenco, Gustavo A. Madero, 07360 México City, Mexico
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Salunkhe V, De Cuyper IM, Papadopoulos P, van der Meer PF, Daal BB, Villa-Fajardo M, de Korte D, van den Berg TK, Gutiérrez L. A comprehensive proteomics study on platelet concentrates: Platelet proteome, storage time and Mirasol pathogen reduction technology. Platelets 2018; 30:368-379. [PMID: 29553857 DOI: 10.1080/09537104.2018.1447658] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Platelet concentrates (PCs) represent a blood transfusion product with a major concern for safety as their storage temperature (20-24°C) allows bacterial growth, and their maximum storage time period (less than a week) precludes complete microbiological testing. Pathogen inactivation technologies (PITs) provide an additional layer of safety to the blood transfusion products from known and unknown pathogens such as bacteria, viruses, and parasites. In this context, PITs, such as Mirasol Pathogen Reduction Technology (PRT), have been developed and are implemented in many countries. However, several studies have shown in vitro that Mirasol PRT induces a certain level of platelet shape change, hyperactivation, basal degranulation, and increased oxidative damage during storage. It has been suggested that Mirasol PRT might accelerate what has been described as the platelet storage lesion (PSL), but supportive molecular signatures have not been obtained. We aimed at dissecting the influence of both variables, that is, Mirasol PRT and storage time, at the proteome level. We present comprehensive proteomics data analysis of Control PCs and PCs treated with Mirasol PRT at storage days 1, 2, 6, and 8. Our workflow was set to perform proteomics analysis using a gel-free and label-free quantification (LFQ) approach. Semi-quantification was based on LFQ signal intensities of identified proteins using MaxQuant/Perseus software platform. Data are available via ProteomeXchange with identifier PXD008119. We identified marginal differences between Mirasol PRT and Control PCs during storage. However, those significant changes at the proteome level were specifically related to the functional aspects previously described to affect platelets upon Mirasol PRT. In addition, the effect of Mirasol PRT on the platelet proteome appeared not to be exclusively due to an accelerated or enhanced PSL. In summary, semi-quantitative proteomics allows to discern between proteome changes due to Mirasol PRT or PSL, and proves to be a methodology suitable to phenotype platelets in an unbiased manner, in various physiological contexts.
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Affiliation(s)
- Vishal Salunkhe
- a Department of Blood Cell Research , Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA) , Amsterdam , The Netherlands
| | - Iris M De Cuyper
- a Department of Blood Cell Research , Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA) , Amsterdam , The Netherlands
| | - Petros Papadopoulos
- b Department of Hematology , Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC) , Madrid , Spain
| | - Pieter F van der Meer
- c Department of Product and Process Development , Sanquin Blood Bank , Amsterdam , The Netherlands
| | - Brunette B Daal
- c Department of Product and Process Development , Sanquin Blood Bank , Amsterdam , The Netherlands
| | - María Villa-Fajardo
- b Department of Hematology , Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC) , Madrid , Spain
| | - Dirk de Korte
- a Department of Blood Cell Research , Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA) , Amsterdam , The Netherlands.,c Department of Product and Process Development , Sanquin Blood Bank , Amsterdam , The Netherlands
| | - Timo K van den Berg
- a Department of Blood Cell Research , Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA) , Amsterdam , The Netherlands
| | - Laura Gutiérrez
- a Department of Blood Cell Research , Sanquin Research and Landsteiner Laboratory, Academic Medical Centre (AMC), University of Amsterdam (UvA) , Amsterdam , The Netherlands.,b Department of Hematology , Hospital Clínico San Carlos, Instituto de Investigación Sanitaria San Carlos (IdISSC) , Madrid , Spain
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Erdem E, Harbiyeli II, Boral H, Ilkit M, Yagmur M, Ersoz R. Corneal Collagen Cross-Linking for the Management of Mycotic Keratitis. Mycopathologia 2018; 183:521-527. [PMID: 29453698 DOI: 10.1007/s11046-018-0247-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 02/02/2018] [Indexed: 10/18/2022]
Abstract
PURPOSE To evaluate the efficiency of corneal collagen cross-linking (CXL) in addition to topical voriconazole in cases with mycotic keratitis. DESIGN Retrospective case series in a tertiary university hospital. PARTICIPANTS CXL was performed on 13 patients with mycotic keratitis who presented poor or no response to topical voriconazole treatment. METHODS The clinical features, symptoms, treatment results and complications were recorded retrospectively. The corneal infection was graded according to the depth of infection into the stroma (from grade 1 to grade 3). The visual analogue scale was used to calculate the pain score before and 2 days after surgery. MAIN OUTCOME MEASURES Grade of the corneal infection. RESULTS Mean age of 13 patients (6 female and 7 male) was 42.4 ± 17.7 years (20-74 years). Fungus was demonstrated in culture (eight patients) or cytological examination (five patients). Seven of the 13 patients (54%) were healed with topical voriconazole and CXL adjuvant treatment in 26 ± 10 days (15-40 days). The remaining six patients did not respond to CXL treatment; they initially presented with higher grade ulcers. Pre- and post-operative pain score values were 8 ± 0.8 and 3.5 ± 1, respectively (p < 0.05). CONCLUSIONS The current study suggests that adjunctive CXL treatment is effective in patients with small and superficial mycotic ulcers. These observations require further research by large randomized clinical trials.
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Affiliation(s)
- Elif Erdem
- Department of Ophthalmology, School of Medicine, Cukurova University, 01330, Adana, Turkey
| | - Ibrahim Inan Harbiyeli
- Department of Ophthalmology, School of Medicine, Cukurova University, 01330, Adana, Turkey.
| | - Hazal Boral
- Division of Mycology, Department of Microbiology, School of Medicine, Cukurova University, Adana, Turkey
| | - Macit Ilkit
- Division of Mycology, Department of Microbiology, School of Medicine, Cukurova University, Adana, Turkey
| | - Meltem Yagmur
- Department of Ophthalmology, School of Medicine, Cukurova University, 01330, Adana, Turkey
| | - Reha Ersoz
- Department of Ophthalmology, School of Medicine, Cukurova University, 01330, Adana, Turkey
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Hickman DA, Pawlowski CL, Shevitz A, Luc NF, Kim A, Girish A, Marks J, Ganjoo S, Huang S, Niedoba E, Sekhon UDS, Sun M, Dyer M, Neal MD, Kashyap VS, Sen Gupta A. Intravenous synthetic platelet (SynthoPlate) nanoconstructs reduce bleeding and improve 'golden hour' survival in a porcine model of traumatic arterial hemorrhage. Sci Rep 2018; 8:3118. [PMID: 29449604 PMCID: PMC5814434 DOI: 10.1038/s41598-018-21384-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/02/2018] [Indexed: 12/14/2022] Open
Abstract
Traumatic non-compressible hemorrhage is a leading cause of civilian and military mortality and its treatment requires massive transfusion of blood components, especially platelets. However, in austere civilian and battlefield locations, access to platelets is highly challenging due to limited supply and portability, high risk of bacterial contamination and short shelf-life. To resolve this, we have developed an I.V.-administrable 'synthetic platelet' nanoconstruct (SynthoPlate), that can mimic and amplify body's natural hemostatic mechanisms specifically at the bleeding site while maintaining systemic safety. Previously we have reported the detailed biochemical and hemostatic characterization of SynthoPlate in a non-trauma tail-bleeding model in mice. Building on this, here we sought to evaluate the hemostatic ability of SynthoPlate in emergency administration within the 'golden hour' following traumatic hemorrhagic injury in the femoral artery, in a pig model. We first characterized the storage stability and post-sterilization biofunctionality of SynthoPlate in vitro. The nanoconstructs were then I.V.-administered to pigs and their systemic safety and biodistribution were characterized. Subsequently we demonstrated that, following femoral artery injury, bolus administration of SynthoPlate could reduce blood loss, stabilize blood pressure and significantly improve survival. Our results indicate substantial promise of SynthoPlate as a viable platelet surrogate for emergency management of traumatic bleeding.
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Affiliation(s)
- DaShawn A Hickman
- Department of Pathology, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Christa L Pawlowski
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Andrew Shevitz
- University Hospitals of Cleveland, Division of Vascular Surgery, Cleveland, OH, 44106, USA
| | - Norman F Luc
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Ann Kim
- University Hospitals of Cleveland, Division of Vascular Surgery, Cleveland, OH, 44106, USA
| | - Aditya Girish
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Joyann Marks
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Simi Ganjoo
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Stephanie Huang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Edward Niedoba
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Ujjal D S Sekhon
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Michael Sun
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA
| | - Mitchell Dyer
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, 15213, USA
| | - Matthew D Neal
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, 15213, USA
| | - Vikram S Kashyap
- University Hospitals of Cleveland, Division of Vascular Surgery, Cleveland, OH, 44106, USA
| | - Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, 44106, USA.
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Bonzano C, Di Zazzo A, Barabino S, Coco G, Traverso CE. Collagen Cross-Linking in the Management of Microbial Keratitis. Ocul Immunol Inflamm 2018; 27:507-512. [DOI: 10.1080/09273948.2017.1414856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Chiara Bonzano
- Clinica Oculistica, Di.N.O.G.M.I. University of Genoa and Ospedale Policlinico San Martino, Genoa, Italy
| | - Antonio Di Zazzo
- Department of Ophthalmology, IRCCS, GB Bietti Foundation, Rome, Italy
| | - Stefano Barabino
- Clinica Oculistica, Di.N.O.G.M.I. University of Genoa and Ospedale Policlinico San Martino, Genoa, Italy
| | - Giulia Coco
- Ophthalmology Department, University of Rome Tor Vergata, Rome, Italy
| | - Carlo Enrico Traverso
- Clinica Oculistica, Di.N.O.G.M.I. University of Genoa and Ospedale Policlinico San Martino, Genoa, Italy
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Di Minno G, Navarro D, Perno CF, Canaro M, Gürtler L, Ironside JW, Eichler H, Tiede A. Pathogen reduction/inactivation of products for the treatment of bleeding disorders: what are the processes and what should we say to patients? Ann Hematol 2017; 96:1253-1270. [PMID: 28624906 PMCID: PMC5486800 DOI: 10.1007/s00277-017-3028-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 05/22/2017] [Indexed: 12/11/2022]
Abstract
Patients with blood disorders (including leukaemia, platelet function disorders and coagulation factor deficiencies) or acute bleeding receive blood-derived products, such as red blood cells, platelet concentrates and plasma-derived products. Although the risk of pathogen contamination of blood products has fallen considerably over the past three decades, contamination is still a topic of concern. In order to counsel patients and obtain informed consent before transfusion, physicians are required to keep up to date with current knowledge on residual risk of pathogen transmission and methods of pathogen removal/inactivation. Here, we describe pathogens relevant to transfusion of blood products and discuss contemporary pathogen removal/inactivation procedures, as well as the potential risks associated with these products: the risk of contamination by infectious agents varies according to blood product/region, and there is a fine line between adequate inactivation and functional impairment of the product. The cost implications of implementing pathogen inactivation technology are also considered.
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Affiliation(s)
- Giovanni Di Minno
- Dipartimento di Medicina Clinica e Chirurgia, Regional Reference Centre for Coagulation Disorders, Federico II University, Via S. Pansini 5, 80131, Naples, Italy.
| | - David Navarro
- Department of Microbiology, Microbiology Service, Hospital Clínico Universitario, School of Medicine, University of Valencia, Valencia, Spain
| | - Carlo Federico Perno
- Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy
| | - Mariana Canaro
- Department of Hemostasis and Thrombosis, Son Espases University Hospital, Palma de Mallorca, Spain
| | - Lutz Gürtler
- Max von Pettenkofer Institute for Hygiene and Medical Microbiology, University of München, Munich, Germany
| | - James W Ironside
- National Creutzfeldt-Jakob Disease Research and Surveillance Unit, School of Clinical Sciences, University of Edinburgh, Western General Hospital, Edinburgh, UK
| | - Hermann Eichler
- Institute of Clinical Hemostaseology and Transfusion Medicine, Saarland University Hospital, Homburg, Germany
| | - Andreas Tiede
- Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
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Pathogen reduction through additive-free short-wave UV light irradiation retains the optimal efficacy of human platelet lysate for the expansion of human bone marrow mesenchymal stem cells. PLoS One 2017; 12:e0181406. [PMID: 28763452 PMCID: PMC5538655 DOI: 10.1371/journal.pone.0181406] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 06/30/2017] [Indexed: 12/17/2022] Open
Abstract
Background We recently developed and characterized a standardized and clinical grade human Platelet Lysate (hPL) that constitutes an advantageous substitute for fetal bovine serum (FBS) for human mesenchymal stem cell (hMSC) expansion required in cell therapy procedures, avoiding xenogenic risks (virological and immunological) and ethical issues. Because of the progressive use of pathogen-reduced (PR) labile blood components, and the requirement of ensuring the viral safety of raw materials for cell therapy products, we evaluated the impact of the novel procedure known as THERAFLEX UV-Platelets for pathogen reduction on hPL quality (growth factors content) and efficacy (as a medium supplement for hMSC expansion). This technology is based on short-wave ultraviolet light (UV-C) that induces non-reversible damages in DNA and RNA of pathogens while preserving protein structures and functions, and has the main advantage of not needing the addition of any photosensitizing additives (that might secondarily interfere with hMSCs). Methodology / Principal findings We applied the THERAFLEX UV-Platelets procedure on fresh platelet concentrates (PCs) suspended in platelet additive solution and prepared hPL from these treated PCs. We compared the quality and efficacy of PR-hPL with the corresponding non-PR ones. We found no impact on the content of five cytokines tested (EGF, bFGF, PDGF-AB, VEGF and IGF-1) but a significant decrease in TGF-ß1 (-21%, n = 11, p<0.01). We performed large-scale culture of hMSCs from bone marrow (BM) during three passages and showed that hPL or PR-hPL at 8% triggered comparable BM-hMSC proliferation as FBS at 10% plus bFGF. Moreover, after proliferation of hMSCs in an hPL- or PR-hPL-containing medium, their profile of membrane marker expression, their clonogenic potential and immunosuppressive properties were maintained, in comparison with BM-hMSCs cultured under FBS conditions. The potential to differentiate towards the adipogenic and osteogenic lineages of hMSCs cultured in parallel in the three conditions also remained identical. Conclusion / Significance We demonstrated the feasibility of using UV-C-treated platelets to subsequently obtain pathogen-reduced hPL, while preserving its optimal quality and efficacy for hMSC expansion in cell therapy applications.
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Estcourt LJ, Malouf R, Hopewell S, Trivella M, Doree C, Stanworth SJ, Murphy MF. Pathogen-reduced platelets for the prevention of bleeding. Cochrane Database Syst Rev 2017; 7:CD009072. [PMID: 28756627 PMCID: PMC5558872 DOI: 10.1002/14651858.cd009072.pub3] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Platelet transfusions are used to prevent and treat bleeding in people who are thrombocytopenic. Despite improvements in donor screening and laboratory testing, a small risk of viral, bacterial, or protozoal contamination of platelets remains. There is also an ongoing risk from newly emerging blood transfusion-transmitted infections for which laboratory tests may not be available at the time of initial outbreak.One solution to reduce the risk of blood transfusion-transmitted infections from platelet transfusion is photochemical pathogen reduction, in which pathogens are either inactivated or significantly depleted in number, thereby reducing the chance of transmission. This process might offer additional benefits, including platelet shelf-life extension, and negate the requirement for gamma-irradiation of platelets. Although current pathogen-reduction technologies have been proven to reduce pathogen load in platelet concentrates, a number of published clinical studies have raised concerns about the effectiveness of pathogen-reduced platelets for post-transfusion platelet count recovery and the prevention of bleeding when compared with standard platelets.This is an update of a Cochrane review first published in 2013. OBJECTIVES To assess the effectiveness of pathogen-reduced platelets for the prevention of bleeding in people of any age requiring platelet transfusions. SEARCH METHODS We searched for randomised controlled trials (RCTs) in the Cochrane Central Register of Controlled Trials (CENTRAL) (the Cochrane Library 2016, Issue 9), MEDLINE (from 1946), Embase (from 1974), CINAHL (from 1937), the Transfusion Evidence Library (from 1950), and ongoing trial databases to 24 October 2016. SELECTION CRITERIA We included RCTs comparing the transfusion of pathogen-reduced platelets with standard platelets, or comparing different types of pathogen-reduced platelets. DATA COLLECTION AND ANALYSIS We used the standard methodological procedures expected by Cochrane. MAIN RESULTS We identified five new trials in this update of the review. A total of 15 trials were eligible for inclusion in this review, 12 completed trials (2075 participants) and three ongoing trials. Ten of the 12 completed trials were included in the original review. We did not identify any RCTs comparing the transfusion of one type of pathogen-reduced platelets with another.Nine trials compared Intercept® pathogen-reduced platelets to standard platelets, two trials compared Mirasol® pathogen-reduced platelets to standard platelets; and one trial compared both pathogen-reduced platelets types to standard platelets. Three RCTs were randomised cross-over trials, and nine were parallel-group trials. Of the 2075 participants enrolled in the trials, 1981 participants received at least one platelet transfusion (1662 participants in Intercept® platelet trials and 319 in Mirasol® platelet trials).One trial included children requiring cardiac surgery (16 participants) or adults requiring a liver transplant (28 participants). All of the other participants were thrombocytopenic individuals who had a haematological or oncological diagnosis. Eight trials included only adults.Four of the included studies were at low risk of bias in every domain, while the remaining eight included studies had some threats to validity.Overall, the quality of the evidence was low to high across different outcomes according to GRADE methodology.We are very uncertain as to whether pathogen-reduced platelets increase the risk of any bleeding (World Health Organization (WHO) Grade 1 to 4) (5 trials, 1085 participants; fixed-effect risk ratio (RR) 1.09, 95% confidence interval (CI) 1.02 to 1.15; I2 = 59%, random-effect RR 1.14, 95% CI 0.93 to 1.38; I2 = 59%; low-quality evidence).There was no evidence of a difference between pathogen-reduced platelets and standard platelets in the incidence of clinically significant bleeding complications (WHO Grade 2 or higher) (5 trials, 1392 participants; RR 1.10, 95% CI 0.97 to 1.25; I2 = 0%; moderate-quality evidence), and there is probably no difference in the risk of developing severe bleeding (WHO Grade 3 or higher) (6 trials, 1495 participants; RR 1.24, 95% CI 0.76 to 2.02; I2 = 32%; moderate-quality evidence).There is probably no difference between pathogen-reduced platelets and standard platelets in the incidence of all-cause mortality at 4 to 12 weeks (6 trials, 1509 participants; RR 0.81, 95% CI 0.50 to 1.29; I2 = 26%; moderate-quality evidence).There is probably no difference between pathogen-reduced platelets and standard platelets in the incidence of serious adverse events (7 trials, 1340 participants; RR 1.09, 95% CI 0.88 to 1.35; I2 = 0%; moderate-quality evidence). However, no bacterial transfusion-transmitted infections occurred in the six trials that reported this outcome.Participants who received pathogen-reduced platelet transfusions had an increased risk of developing platelet refractoriness (7 trials, 1525 participants; RR 2.94, 95% CI 2.08 to 4.16; I2 = 0%; high-quality evidence), though the definition of platelet refractoriness differed between trials.Participants who received pathogen-reduced platelet transfusions required more platelet transfusions (6 trials, 1509 participants; mean difference (MD) 1.23, 95% CI 0.86 to 1.61; I2 = 27%; high-quality evidence), and there was probably a shorter time interval between transfusions (6 trials, 1489 participants; MD -0.42, 95% CI -0.53 to -0.32; I2 = 29%; moderate-quality evidence). Participants who received pathogen-reduced platelet transfusions had a lower 24-hour corrected-count increment (7 trials, 1681 participants; MD -3.02, 95% CI -3.57 to -2.48; I2 = 15%; high-quality evidence).None of the studies reported quality of life.We did not evaluate any economic outcomes.There was evidence of subgroup differences in multiple transfusion trials between the two pathogen-reduced platelet technologies assessed in this review (Intercept® and Mirasol®) for all-cause mortality and the interval between platelet transfusions (favouring Intercept®). AUTHORS' CONCLUSIONS Findings from this review were based on 12 trials, and of the 1981 participants who received a platelet transfusion only 44 did not have a haematological or oncological diagnosis.In people with haematological or oncological disorders who are thrombocytopenic due to their disease or its treatment, we found high-quality evidence that pathogen-reduced platelet transfusions increase the risk of platelet refractoriness and the platelet transfusion requirement. We found moderate-quality evidence that pathogen-reduced platelet transfusions do not affect all-cause mortality, the risk of clinically significant or severe bleeding, or the risk of a serious adverse event. There was insufficient evidence for people with other diagnoses.All three ongoing trials are in adults (planned recruitment 1375 participants) with a haematological or oncological diagnosis.
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Affiliation(s)
- Lise J Estcourt
- NHS Blood and TransplantHaematology/Transfusion MedicineLevel 2, John Radcliffe HospitalHeadingtonOxfordUKOX3 9BQ
| | - Reem Malouf
- University of OxfordNational Perinatal Epidemiology Unit (NPEU)Old Road CampusOxfordUKOX3 7LF
| | - Sally Hopewell
- University of OxfordOxford Clinical Trials Research UnitNuffield Department of Orthopaedics, Rheumatology and Musculoskeletal SciencesWindmill RoadOxfordUKOX3 7LD
| | - Marialena Trivella
- University of OxfordCentre for Statistics in MedicineBotnar Research CentreWindmill RoadOxfordUKOX3 7LD
| | - Carolyn Doree
- NHS Blood and TransplantSystematic Review InitiativeJohn Radcliffe HospitalOxfordUKOX3 9BQ
| | - Simon J Stanworth
- Oxford University Hospitals NHS Foundation Trust and University of OxfordNational Institute for Health Research (NIHR) Oxford Biomedical Research CentreJohn Radcliffe Hospital, Headley WayHeadingtonOxfordUKOX3 9BQ
| | - Michael F Murphy
- Oxford University Hospitals NHS Foundation Trust and University of OxfordNHS Blood and Transplant; National Institute for Health Research (NIHR) Oxford Biomedical Research CentreJohn Radcliffe HospitalHeadingtonOxfordUK
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Yonemura S, Doane S, Keil S, Goodrich R, Pidcoke H, Cardoso M. Improving the safety of whole blood-derived transfusion products with a riboflavin-based pathogen reduction technology. BLOOD TRANSFUSION = TRASFUSIONE DEL SANGUE 2017; 15:357-364. [PMID: 28665269 PMCID: PMC5490732 DOI: 10.2450/2017.0320-16] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 12/19/2016] [Indexed: 01/06/2023]
Abstract
Worldwide safety of blood has been positively impacted by technological, economic and social improvements; nevertheless, growing socio-political changes of contemporary society together with environmental changes challenge the practice of blood transfusion with a continuous source of unforeseeable threats with the emergence and re-emergence of blood-borne pathogens. Pathogen reduction (PR) is a proactive strategy to mitigate the risk of transfusion-transmitted infections. PR technologies for the treatment of single plasma units and platelet concentrates are commercially available and have been successfully implemented in more than 2 dozen countries worldwide. Ideally, all labile blood components should be PR treated to ensure a safe and sustainable blood supply in accordance with regional transfusion best practices. Recently, a device (Mirasol® Pathogen Reduction Technology System) for PR treatment of whole blood using riboflavin and UV light has received CE marking, a significant step forward in realising blood safety where WB transfusion is the norm, such as in sub-Saharan Africa and in far-forward combat situations. There is also keen interest in the ability to derive components from Mirasol®-treated whole blood, as it is seen as a more efficient and economical means to implement universal PR in the blood centre environment than treatment of components with different PR systems.
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Affiliation(s)
| | - Suzann Doane
- Terumo BCT, Lakewood, CO, United States of America
| | - Shawn Keil
- Terumo BCT, Lakewood, CO, United States of America
| | - Raymond Goodrich
- Terumo BCT, Lakewood, CO, United States of America
- Infectious Disease Research Center, Colorado State University, Fort Collins, CO, United States of America
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Nkohkwo A, Agbor G, Asongalem E, Tagny C, Asonganyi T. Whole blood pathogen reduction technology and blood safety in sub-Saharan Africa: A systematic review with regional discussion. Afr J Lab Med 2016; 5:363. [PMID: 28879109 PMCID: PMC5436399 DOI: 10.4102/ajlm.v5i1.363] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 03/01/2016] [Indexed: 11/17/2022] Open
Abstract
Background Despite vast improvements in transfusion services in sub-Saharan Africa over the last decade, there remain serious concerns on the safety and adequacy of the blood supply across the region. Objective This review paper ascertains the role of pathogen reduction technology (PRT) in improving blood safety and supply adequacy in the region. Method The state of blood safety in sub-Saharan Africa was reviewed. Meetings, seminars and correspondence were undertaken with key clinicians, scientists and professional bodies in the region, including the World Health Organization’s Regional Office for Africa, to examine the suitability of PRT for improving the safety of whole blood transfusion, a prevalent transfusion format in the region. Results Existing literature suggests that combining PRT with current blood safety measures (such as serology) would improve the safety and adequacy of the blood supply for transfusions in sub-Saharan Africa. This was echoed by the findings of the stakeholder meetings. Conclusion Following a detailed appraisal of two leading PRT systems, the Mirasol® PRT System and the Cerus S-303 System, we suggest that companies conduct comprehensive toxicological evaluation of the agents used for PRT and publish this in the scientific literature. We also recommend that the safety and efficacy of these technologies should be established in a randomised clinical trial conducted in sub-Saharan Africa.
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Affiliation(s)
| | - Gabriel Agbor
- Department of Biochemistry, Institute of Medical Research and Medicinal Plants Studies, Yaoundé, Cameroon
| | - Emmanuel Asongalem
- Department of Biomedical Sciences, Faculty of Health Sciences, University of Buea and Toxicology Society, Buea, Cameroon
| | - Claude Tagny
- Haematology and Blood Transfusion Service, University Teaching Hospital, Yaoundé, Cameroon
| | - Tazoacha Asonganyi
- Department of Biochemistry and Immunology, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1, Yaoundé, Cameroon
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Treatment of Whole Blood With Riboflavin and UV Light: Impact on Malaria Parasite Viability and Whole Blood Storage. Shock 2016; 44 Suppl 1:33-8. [PMID: 25423125 PMCID: PMC4498649 DOI: 10.1097/shk.0000000000000280] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Background: Sub-Saharan African countries utilize whole blood (WB) to treat severe anemia secondary to severe blood loss or malaria on an emergency basis. In many areas with high prevalence of transfusion-transmissible agents, blood safety measures are insufficient. Pathogen reduction technology applied to WB might considerably improve blood safety. Methods: Whole blood from 40 different donors were treated with riboflavin and UV light (pathogen reduction technology) in order to inactivate malaria parasite replication. The extent of parasite inactivation was determined using quantitative polymerase chain reaction methods and was correlated to studies evaluating the replication of malaria parasites in culture. Products were also stored for 21 days at +4°C and monitored for cell quality throughout storage. Results: Plasmodium amplicon was present in 21 samples (>100 copies/mL), doubtful in four (10–100 genome equivalents [gEq]/mL), and negative in 15 U. The majority of asymptomatic parasitemic donors carried low parasite levels, with only six donors above 5,000 copies/mL (15%). After treatment with riboflavin and UV light, these six samples demonstrated a 0.5 to 1.2 log reduction in quantitative polymerase chain reaction amplification. This correlated to equal to or greater than 6.4 log reductions in infectivity. In treated WB units, cell quality parameters remained stable; however, plasma hemoglobin increased to 0.15 g/dL. All markers behaved similarly to published data for stored, untreated WB. Conclusions: Pathogen reduction technology treatment can inactivate malaria parasites in WB while maintaining adequate blood quality during posttreatment cold storage for 21 days.
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Ignatova AA, Karpova OV, Trakhtman PE, Rumiantsev SA, Panteleev MA. Functional characteristics and clinical effectiveness of platelet concentrates treated with riboflavin and ultraviolet light in plasma and in platelet additive solution. Vox Sang 2015; 110:244-52. [DOI: 10.1111/vox.12364] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 09/30/2015] [Accepted: 10/07/2015] [Indexed: 12/27/2022]
Affiliation(s)
- A. A. Ignatova
- Federal Scientific Clinical Centre of Pediatric Hematology, Oncology and Immunology named after Dmitry Rogachev Ministry of Health of Russian; Moscow Russian Federation
| | - O. V. Karpova
- Federal Scientific Clinical Centre of Pediatric Hematology, Oncology and Immunology named after Dmitry Rogachev Ministry of Health of Russian; Moscow Russian Federation
| | - P. E. Trakhtman
- Federal Scientific Clinical Centre of Pediatric Hematology, Oncology and Immunology named after Dmitry Rogachev Ministry of Health of Russian; Moscow Russian Federation
| | - S. A. Rumiantsev
- Federal Scientific Clinical Centre of Pediatric Hematology, Oncology and Immunology named after Dmitry Rogachev Ministry of Health of Russian; Moscow Russian Federation
| | - M. A. Panteleev
- Federal Scientific Clinical Centre of Pediatric Hematology, Oncology and Immunology named after Dmitry Rogachev Ministry of Health of Russian; Moscow Russian Federation
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McElearney K, Ali A, Gilbert A, Kshirsagar R, Zang L. Tryptophan oxidation catabolite,N-formylkynurenine, in photo degraded cell culture medium results in reduced cell culture performance. Biotechnol Prog 2015; 32:74-82. [DOI: 10.1002/btpr.2198] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 10/24/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Kyle McElearney
- Cell Culture Development, Biogen; 225 Binney Street Cambridge MA 02142
| | - Amr Ali
- Cell Culture Development, Biogen; 225 Binney Street Cambridge MA 02142
| | - Alan Gilbert
- Cell Culture Development, Biogen; 225 Binney Street Cambridge MA 02142
| | - Rashmi Kshirsagar
- Cell Culture Development, Biogen; 225 Binney Street Cambridge MA 02142
| | - Li Zang
- Analytical Development, Biogen; 225 Binney Street Cambridge MA 02142
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Keil SD, Hovenga N, Gilmour D, Marschner S, Goodrich R. Treatment of Platelet Products with Riboflavin and UV Light: Effectiveness Against High Titer Bacterial Contamination. J Vis Exp 2015:e52820. [PMID: 26327141 PMCID: PMC4692557 DOI: 10.3791/52820] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Contamination of platelet units by bacteria has long been acknowledged as a significant transfusion risk due to their post-donation storage conditions. Products are routinely stored at 22 °C on an agitating shaker, a condition that can promote bacterial growth. Although the total number of bacteria believed to be introduced into a platelet product is extremely low, these bacteria can multiply to a very high titer prior to transfusion, potentially resulting in serious adverse events. The aim of this study was to evaluate a riboflavin based pathogen reduction process against a panel of bacteria that have been identified as common contaminants of platelet products. This panel included the following organisms: S. epidermidis, S. aureus, S. mitis, S. pyogenes, S. marcescens, Y. enterocolitica, B. neotomae, B. cereus, E. coli, P. aeruginosa and K. pneumoniae. Each platelet unit was inoculated with a high bacterial load and samples were removed both before and after treatment. A colony forming assay, using an end point dilution scheme, was used to determine the pre-treatment and post-treatment bacterial titers. Log reduction was calculated by subtracting the post-treatment titer from the pre-treatment titer. The following log reductions were observed: S. epidermidis 4.7 log (99.998%), S. aureus 4.8 log (99.998%), S. mitis 3.7 log (99.98%), S. pyogenes 2.6 log (99.7%), S. marcescens 4.0 log (99.99%), Y. enterocolitica 3.3 log (99.95%), B. neotomae 5.4 log (99.9996%), B. cereus 2.6 log (99.7%), E. coli ≥5.4 log (99.9996%), P. aeruginosa 4.7 log (99.998%) and K. pneumoniae 2.8 log (99.8%). The results from this study suggest the process could help to lower the risk of severe adverse transfusion events associated with bacterial contamination.
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Larrea L, Ortiz-de-Salazar MI, Martínez P, Roig R. Quantitative analysis of plasma proteins in whole blood-derived fresh frozen plasma prepared with three pathogen reduction technologies. Transfus Apher Sci 2015; 52:305-10. [DOI: 10.1016/j.transci.2015.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/21/2014] [Accepted: 01/08/2015] [Indexed: 01/02/2023]
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Tabibian D, Richoz O, Hafezi F. PACK-CXL: Corneal Cross-linking for Treatment of Infectious Keratitis. J Ophthalmic Vis Res 2015; 10:77-80. [PMID: 26005557 PMCID: PMC4424723 DOI: 10.4103/2008-322x.156122] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 11/04/2014] [Indexed: 11/04/2022] Open
Abstract
This article discusses corneal cross-linking (CXL) and how it transitioned from a modality for treating corneal ectatic disorders to an inventive means of treating infectious keratitis. Initially, CXL was successfully developed to halt the progression of ectatic diseases such as keratoconus, using the standard Dresden protocol. Later, indications were extended to treat iatrogenic ectasia developing after laser-assisted in situ keratomileusis (LASIK) and photo-refractive keratectomy (PRK). At the time, it had been postulated that the combination of ultraviolet light with riboflavin could not only biomechanically strengthen the cornea but also was capable of destroying living cells and organisms including keratocytes and pathogens. Thus a new and innovative concept of treatment for infectious keratitis emerged through the use of CXL technology. Initially only advanced infectious melting ulcers resisting standard microbicidal therapy were treated with CXL in addition to standard therapy. In subsequent studies CXL was also used to treat bacterial keratitis as first line therapy without the use of concomitant antibiotic therapy. With the increasing interest in CXL technology to treat infectious keratitis and to clearly separate its use from the treatment of ectatic disorders, a new term was adopted at the 9(th) CXL congress in Dublin for this specific indication: PACK-CXL (photoactivated chromophore for infectious keratitis). PACK-CXL has the potential to eventually become an interesting alternative to standard antibiotic therapy in treating infectious corneal disorders, and may help reduce the global burden of microbial resistance to antibiotics and other therapeutic agents.
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Affiliation(s)
- David Tabibian
- Laboratory for Ocular Cell Biology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Olivier Richoz
- Laboratory for Ocular Cell Biology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Farhad Hafezi
- Laboratory for Ocular Cell Biology, Faculty of Medicine, University of Geneva, Geneva, Switzerland ; Department of Ophthalmology, University of Southern California, Los Angeles, California, USA ; The ELZA Institute, Dietikon/Zurich, Switzerland
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Green L, Allard S, Cardigan R. Modern banking, collection, compatibility testing and storage of blood and blood components. Anaesthesia 2015; 70 Suppl 1:3-9, e2. [PMID: 25440389 DOI: 10.1111/anae.12912] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2014] [Indexed: 12/23/2022]
Abstract
The clinical practice of blood transfusion has changed considerably over the last few decades. The potential risk of transfusion transmissible diseases has directed efforts towards the production of safe and high quality blood. All transfusion services now operate in an environment of ever-increasing regulatory controls encompassing all aspects of blood collection, processing and storage. Stringent donor selection, identification of pathogens that can be transmitted through blood, and development of technologies that can enhance the quality of blood, have all led to a substantial reduction in potential risks and complications associated with blood transfusion. In this article, we will discuss the current standards required for the manufacture of blood, starting from blood collection, through processing and on to storage.
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Affiliation(s)
- L Green
- NHS Blood and Transplant, Barts Health NHS Trust and Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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Olawumi HO, Fadeyi A, Babatunde SK, Akanbi AA, Babatunde AS, Sani MA, Aderibigbe SA. Malaria Parasitaemia among Blood Donors in Ilorin, Nigeria. Afr J Infect Dis 2015; 9:10-3. [PMID: 25722845 PMCID: PMC4325353 DOI: 10.4314/ajid.v9i1.3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The prevalence of malaria parasitaemia among blood donors in Ilorin has not been documented. In this study, we determined the prevalence of malaria parasitaemia among blood donors in Ilorin, as well as, the sociodemographic and other factors associated with it. METHOD This was a hospital-based cross sectional study involving 308 consenting blood donors. The sociodemographic characteristics of participants as well as blood donation history were obtained using structured questionnaires specifically designed for this purpose. Giemsastained thick and thin blood films to identify malaria parasites were performed using standard method. ABO blood grouping and haemoglobin electrophoresis tests were also done using standard methods. RESULTS The prevalence of malaria parasitaemia among blood donors in Ilorin was 27.3%. The parasite species found were more of Plasmodium falciparum(85.7%) than Plasmodium malariae(14.3%) . There was no age or sex difference in malaria parasitaemia. (p-value of 0.8 and 0.32 respectively). A greater proportion of blood group O individuals had malaria parasitaemia than groups A and B but this difference was not significant (p-value = 0.13). There was also no significant difference among haemoglobin genotypes. CONCLUSION The prevalence of malaria parasites among blood donors in Ilorin is considerably high and lack of routine screening of blood puts recipients at risk. We recommend that routine screening for malaria parasites be commenced in our blood banks. Treatment of donor blood with riboflavin and UV light to inactivate malaria parasites and other infectious pathogens before they are transfused to patients may also be considered in our blood banks.
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Affiliation(s)
- Hannah O Olawumi
- Department of Haematology and Blood Transfusion, University of Ilorin Teaching Hospital, Ilorin, Nigeria
| | - Abayomi Fadeyi
- Department of Microbiology and Parasitology, University of Ilorin Teaching Hospital, Ilorin, Nigeria
| | - Shola K Babatunde
- Department of Biosciences and Biotechnology, Kwara State University, Malate
| | - Aliu A Akanbi
- Department of Microbiology and Parasitology, University of Ilorin Teaching Hospital, Ilorin, Nigeria
| | - Abiola S Babatunde
- Department of Haematology and Blood Transfusion, University of Ilorin Teaching Hospital, Ilorin, Nigeria
| | - Musa A Sani
- Department of Haematology, Sobi Specialist Hospital, Ilorin, Nigeria
| | - Sunday A Aderibigbe
- Department of Epidemiology & Community Health, University of Ilorin Teaching Hospital, Ilorin, Nigeria
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Keil SD, Saakadze N, Bowen R, Newman JL, Karatela S, Gordy P, Marschner S, Roback J, Hillyer CD. Riboflavin and ultraviolet light for pathogen reduction of murine cytomegalovirus in blood products. Transfusion 2014; 55:858-63. [DOI: 10.1111/trf.12945] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 09/10/2014] [Accepted: 09/11/2014] [Indexed: 11/27/2022]
Affiliation(s)
| | | | | | | | | | - Paul Gordy
- Colorado State University; Fort Collins Colorado
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Bäckman A, Makdoumi K, Mortensen J, Crafoord S. The efficiency of cross-linking methods in eradication of bacteria is influenced by the riboflavin concentration and the irradiation time of ultraviolet light. Acta Ophthalmol 2014; 92:656-61. [PMID: 25493311 DOI: 10.1111/aos.12301] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE To determine bacterial eradication using numerous riboflavin concentrations and different ultraviolet light A (UVA) radiant and exposure time in an experimental model. METHODS Dilutions of Staphylococcus epidermidis were mixed with riboflavin at varying concentrations (0.007–0.09%). Effects on bacterial growth were evaluated after 0, 3, 6, 30 and 60 min of UVA exposure (irradiance 30 and 3 mW/cm2). Standard settings of UVA were compared with high-power UVA approach. Different fluid thicknesses of the exposed dilutions were also examined to improve the model. RESULTS Bacterial eradication (%) was increased after 60 compared with 30 min of UVA exposure for concentrations of 0.03–0.07% but not for 0.09% riboflavin.There was a significant difference between the efficacy between 0.03 and 0.09% and eradication dropped from 80%to 50%(p = 0.01).A correlation could be calculated for the amount of riboflavin at 60 min of UVA and the ability to kill bacteria(p = 0.01). The antibacterial effect was more pronounced when the tested bacterial suspension thickness was reduced. High-power UVA method was less potent in microbial elimination, eradicating only 60%of bacteria after 6 min versus 97–99%after 60 min in the low-power setting, compared with respective controls (p = 0.02). CONCLUSIONS In these in vitro experiments, a longer UVA exposure time in combination with lower riboflavin levels were found to be favourable in killing bacteria as compared to the standard cross-linking settings. Further studies are needed to evaluate the clinical relevance of these findings.
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Affiliation(s)
- Anders Bäckman
- Clinical Research Centre; Örebro University Hospital; Örebro Sweden
| | - Karim Makdoumi
- Department of Ophthalmology; Örebro University Hospital; Örebro Sweden
- Centre for Health Care Sciences; Örebro University Hospital; Örebro Sweden
| | - Jes Mortensen
- Department of Ophthalmology; Ryhov County Hospital; Jönköping Sweden
| | - Sven Crafoord
- Department of Ophthalmology; Örebro University Hospital; Örebro Sweden
- School of Health and Medical Sciences; Örebro University; Örebro Sweden
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Insińska-Rak M, Sikorski M. Riboflavin interactions with oxygen-a survey from the photochemical perspective. Chemistry 2014; 20:15280-91. [PMID: 25302465 DOI: 10.1002/chem.201403895] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In this short review we provide some insights to the main processes that riboflavin is involved in upon absorption of a photon. We describe riboflavin properties in its interactions with oxygen, comparing them to the properties of some other singlet oxygen sensitizers. Data are provided on riboflavin photosensitizing properties in vivo and in vitro, and its properties as an endogenous singlet oxygen sensitizer are discussed. We additionally report flavin catalytic role in organic synthesis and photochemical reactivity in solutions of riboflavin and some of its derivatives.
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Affiliation(s)
- Małgorzata Insińska-Rak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614 Poznań (Poland), Fax: (+48) 61 829 1555.
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