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Calise DG, Park SC, Bok JW, Goldman GH, Keller NP. An oxylipin signal confers protection against antifungal echinocandins in pathogenic aspergilli. Nat Commun 2024; 15:3770. [PMID: 38704366 PMCID: PMC11069582 DOI: 10.1038/s41467-024-48231-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 04/23/2024] [Indexed: 05/06/2024] Open
Abstract
Aspergillus fumigatus is the leading causative agent of life-threatening invasive aspergillosis in immunocompromised individuals. One antifungal class used to treat Aspergillus infections is the fungistatic echinocandins, semisynthetic drugs derived from naturally occurring fungal lipopeptides. By inhibiting beta-1,3-glucan synthesis, echinocandins cause both fungistatic stunting of hyphal growth and repeated fungicidal lysis of apical tip compartments. Here, we uncover an endogenous mechanism of echinocandin tolerance in A. fumigatus whereby the inducible oxylipin signal 5,8-diHODE confers protection against tip lysis via the transcription factor ZfpA. Treatment of A. fumigatus with echinocandins induces 5,8-diHODE synthesis by the fungal oxygenase PpoA in a ZfpA dependent manner resulting in a positive feedback loop. This protective 5,8-diHODE/ZfpA signaling relay is conserved among diverse isolates of A. fumigatus and in two other Aspergillus pathogens. Our findings reveal an oxylipin-directed growth program-possibly arisen through natural encounters with native echinocandin producing fungi-that enables echinocandin tolerance in pathogenic aspergilli.
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Affiliation(s)
- Dante G Calise
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
- Microbiology Doctoral Training Program, University of Wisconsin-Madison, Madison, WI, USA
| | - Sung Chul Park
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Jin Woo Bok
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA
| | - Gustavo H Goldman
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
- National Institute of Science and Technology in Human Pathogenic Fungi, Ribeirão Preto, Brazil
| | - Nancy P Keller
- Department of Medical Microbiology and Immunology, University of Wisconsin-Madison, Madison, WI, USA.
- Department of Plant Pathology, University of Wisconsin-Madison, Madison, WI, USA.
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Kuthan R, Zaremba-Wróblewski GL, Ott F, Soltaninia D. Septic Obturation of a Knee Endoprosthesis Caused by Aspergillus clavatus. Pathogens 2023; 12:1270. [PMID: 37887786 PMCID: PMC10610210 DOI: 10.3390/pathogens12101270] [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: 09/13/2023] [Revised: 10/11/2023] [Accepted: 10/18/2023] [Indexed: 10/28/2023] Open
Abstract
Aspergillus clavatus is a rare opportunistic fungal pathogen that can be isolated from various environmental sources, including soil and animal feces. Although infrequent, infections caused by A. clavatus can be severe in immunocompromised patients. Here, we present a case of a prosthetic joint infection (PJI) in a 74-year-old female patient caused by A. clavatus. The patient presented with left knee pain, and septic loosening of the left knee endoprosthesis was diagnosed. She underwent surgical revision with the implantation of an antibiotic spacer and microbiologic testing. The results came back positive for both Staphylococcus lugdunensis and A. clavatus (which is found in only a fraction of a percent of PJIs). She was treated with oral antimicrobials for 3 months postoperatively. This case report vividly illustrates a clinical scenario that underscores the significance of rigorous microbiologic testing procedures, accurate pathogen identification, unwavering vigilance in testing protocols, and a cautious approach that avoids succumbing to the seductive simplicity of Occam's razor.
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Affiliation(s)
- Robert Kuthan
- Chair and Department of Medical Microbiology, Medical University of Warsaw, 02-004 Warsaw, Poland;
- Student Scientific Club Microbiology Applied to Clinics and Real Life for Students (MACR-S) Affiliated to Chair and Department of Medical Microbiology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Gabriel Lawrence Zaremba-Wróblewski
- Chair and Department of Medical Microbiology, Medical University of Warsaw, 02-004 Warsaw, Poland;
- Student Scientific Club Microbiology Applied to Clinics and Real Life for Students (MACR-S) Affiliated to Chair and Department of Medical Microbiology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Flynn Ott
- Student Scientific Club Microbiology Applied to Clinics and Real Life for Students (MACR-S) Affiliated to Chair and Department of Medical Microbiology, Medical University of Warsaw, 02-091 Warsaw, Poland
| | - Dorsa Soltaninia
- Student Scientific Club Microbiology Applied to Clinics and Real Life for Students (MACR-S) Affiliated to Chair and Department of Medical Microbiology, Medical University of Warsaw, 02-091 Warsaw, Poland
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3
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Peláez-García de la Rasilla T, Mato-López Á, Pablos-Puertas CE, González-Huerta AJ, Gómez-López A, Mellado E, Amich J. Potential Implication of Azole Persistence in the Treatment Failure of Two Haematological Patients Infected with Aspergillus fumigatus. J Fungi (Basel) 2023; 9:805. [PMID: 37623576 PMCID: PMC10455522 DOI: 10.3390/jof9080805] [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: 07/07/2023] [Revised: 07/27/2023] [Accepted: 07/28/2023] [Indexed: 08/26/2023] Open
Abstract
Invasive aspergillosis (IA) is a major cause of morbidity and mortality in patients receiving allogeneic haematopoieticcell transplantation. The deep immunosuppression and a variety of potential additional complications developed in these patients result in IA reaching mortality rates of around 50-60%. This mortality is even higher when the patients are infected with azole-resistant isolates, demonstrating that, despite the complexity of management, adequate azole treatment can have a beneficial effect. It is therefore paramount to understand the reasons why antifungal treatment of IA infections caused by azole-susceptible isolates is often unsuccessful. In this respect, there are already various factors known to be important for treatment efficacy, for instance the drug concentrations achieved in the blood, which are thus often monitored. We hypothesize that antifungal persistence may be another important factor to consider. In this study we present two case reports of haematological patients who developed proven IA and suffered treatment failure, despite having been infected with susceptible isolates, receiving correct antifungal treatment and reaching therapeutic levels of the azole. Microbiological analysis of the recovered infective isolates showed that the patients were infected with multiple strains, several of which were persisters to voriconazole and/or isavuconazole. Therefore, we propose that azole persistence may have contributed to therapeutic failure in these patients and that this phenomenon should be considered in future studies.
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Affiliation(s)
- Teresa Peláez-García de la Rasilla
- Microbiology Department, Central University Hospital of Asturias (HUCA), 33011 Oviedo, Asturias, Spain
- Institute for Health Research in the Principality of Asturias, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Asturias, Spain
| | - Álvaro Mato-López
- Mycology Reference Laboratory (Laboratorio de Referencia e Investigación en Micología LRIM), National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Majadahonda, Madrid, Spain
| | - Clara E. Pablos-Puertas
- Mycology Reference Laboratory (Laboratorio de Referencia e Investigación en Micología LRIM), National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Majadahonda, Madrid, Spain
| | - Ana Julia González-Huerta
- Hematology-Stem Cell Transplantation Unit, Hospital Universitario Central de Asturias (HUCA), 33011 Oviedo, Asturias, Spain
| | - Alicia Gómez-López
- Mycology Reference Laboratory (Laboratorio de Referencia e Investigación en Micología LRIM), National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Majadahonda, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC-CB21/13/00105), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Emilia Mellado
- Mycology Reference Laboratory (Laboratorio de Referencia e Investigación en Micología LRIM), National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Majadahonda, Madrid, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC-CB21/13/00105), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Jorge Amich
- Mycology Reference Laboratory (Laboratorio de Referencia e Investigación en Micología LRIM), National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), 28220 Majadahonda, Madrid, Spain
- Manchester Fungal Infection Group (MFIG), Division of Evolution, Infection, and Genomics, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M139NT, UK
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4
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Carmo A, Rocha M, Pereirinha P, Tomé R, Costa E. Antifungals: From Pharmacokinetics to Clinical Practice. Antibiotics (Basel) 2023; 12:antibiotics12050884. [PMID: 37237787 DOI: 10.3390/antibiotics12050884] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/30/2023] [Accepted: 05/05/2023] [Indexed: 05/28/2023] Open
Abstract
The use of antifungal drugs started in the 1950s with polyenes nystatin, natamycin and amphotericin B-deoxycholate (AmB). Until the present day, AmB has been considered to be a hallmark in the treatment of invasive systemic fungal infections. Nevertheless, the success and the use of AmB were associated with severe adverse effects which stimulated the development of new antifungal drugs such as azoles, pyrimidine antimetabolite, mitotic inhibitors, allylamines and echinochandins. However, all of these drugs presented one or more limitations associated with adverse reactions, administration route and more recently the development of resistance. To worsen this scenario, there has been an increase in fungal infections, especially in invasive systemic fungal infections that are particularly difficult to diagnose and treat. In 2022, the World Health Organization (WHO) published the first fungal priority pathogens list, alerting people to the increased incidence of invasive systemic fungal infections and to the associated risk of mortality/morbidity. The report also emphasized the need to rationally use existing drugs and develop new drugs. In this review, we performed an overview of the history of antifungals and their classification, mechanism of action, pharmacokinetic/pharmacodynamic (PK/PD) characteristics and clinical applications. In parallel, we also addressed the contribution of fungi biology and genetics to the development of resistance to antifungal drugs. Considering that drug effectiveness also depends on the mammalian host, we provide an overview on the roles of therapeutic drug monitoring and pharmacogenomics as means to improve the outcome, prevent/reduce antifungal toxicity and prevent the emergence of antifungal resistance. Finally, we present the new antifungals and their main characteristics.
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Affiliation(s)
- Anália Carmo
- Advanced Unit for Pharmacokinetics and Personalized Therapeutics, Clinical Pathology Department, Centro Hospitalar e Universitário de Coimbra, 3004-561 Coimbra, Portugal
| | - Marilia Rocha
- Advanced Unit for Pharmacokinetics and Personalized Therapeutics, Pharmacy Department, Centro Hospitalar e Universitário de Coimbra, 3004-561 Coimbra, Portugal
| | - Patricia Pereirinha
- Advanced Unit for Pharmacokinetics and Personalized Therapeutics, Pharmacy Department, Centro Hospitalar e Universitário de Coimbra, 3004-561 Coimbra, Portugal
| | - Rui Tomé
- Clinical Pathology Department, Centro Hospitalar e Universitário de Coimbra, 3004-561 Coimbra, Portugal
| | - Eulália Costa
- Advanced Unit for Pharmacokinetics and Personalized Therapeutics, Clinical Pathology Department, Centro Hospitalar e Universitário de Coimbra, 3004-561 Coimbra, Portugal
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Gao P, Zhang W, Fang X, Leng B, Zhang Y, Liu X, Wang X, Guo N. Simultaneous quantification of venetoclax and voriconazole in human plasma by UHPLC-MS/MS and its application in acute myeloid leukemia patients. J Pharm Biomed Anal 2023; 227:115279. [PMID: 36739719 DOI: 10.1016/j.jpba.2023.115279] [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: 11/18/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/04/2023]
Abstract
Venetoclax, an orally bioavailable BCL-2 inhibitor, has been regarded as a breakthrough for the treatment of leukemia but has a wide interindividual variability and drug-drug interaction in pharmacokinetics. In this study, a simple and sensitive ultra-high performance liquid chromatography-tandem with mass spectrometry method was established and fully validated to quantify venetoclax and voriconazole simultaneously in human plasma. After protein precipitation, the analytes were separated on a Hypersil GOLD C18 column (3 µm, 2.1 × 50 mm) by gradient elution. The mass detection was operated under multiple reaction monitoring mode at m/z 868.5 →636.2 for venetoclax, 350.0 → 127.0 for voriconazole and 353.0 → 127.0 for voriconazole-D3(Internal Standard). The calibration ranges were 0.1-10 μg/mL for venetoclax and 0.05-10 μg/mL for voriconazole with correlation coefficients (r2)>0.998. The validated method was successfully applied to the pharmacokinetic study in acute myeloid leukemia patients receiving venetoclax with or without voriconazole. The results suggested that co-treatment with 200 mg q12h voriconazole, the peak concentration of venetoclax (100 mg qd) could be raised to the same level as the 400 mg qd group. However, the trough concentration of venetoclax (100 mg qd) was much higher than that of the 400 mg qd group. Therapeutic drug monitoring might give some guidance for the adjustment of dosing regimens to guarantee the drug efficacy and safety of patients to some extent.
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Affiliation(s)
- Ping Gao
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
| | - Wen Zhang
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
| | - Xiaosheng Fang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Bing Leng
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
| | - Yahui Zhang
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
| | - Xin Liu
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Xin Wang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, Shandong, China
| | - Nan Guo
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China.
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6
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Sigera LSM, Denning DW. Invasive Aspergillosis after Renal Transplantation. J Fungi (Basel) 2023; 9:255. [PMID: 36836369 PMCID: PMC9963524 DOI: 10.3390/jof9020255] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/11/2023] [Accepted: 02/12/2023] [Indexed: 02/17/2023] Open
Abstract
Over 95,000 renal transplantation procedures were completed in 2021. Invasive aspergillosis (IA) affects about 1 in 250 to 1 in 43 renal transplant recipients. About 50% of cases occur in the first 6 months after transplantation; the median time of onset is nearly 3 years. Major risk factors for IA include old age, diabetes mellitus (especially if prior diabetic nephropathy), delayed graft function, acute graft rejection, chronic obstructive pulmonary disease, cytomegalovirus disease, and neutropenia. Hospital construction, demolition activities, and residential refurbishments also increase the risk. Parenchymal pulmonary infection is the most common (~75%), and bronchial, sinus, cerebral, and disseminated disease are less common. Typical pulmonary features of fever, dyspnea, cough, and hemoptysis are seen in most patients, but 20% have non-specific general features of illness. Non-specific infiltrates and pulmonary nodules are the commonest radiological features, with bilateral disease carrying a worse prognosis. Bronchoscopy for direct microscopy, fungal culture, and Aspergillus antigen are the fastest means of establishing the diagnosis; a positive serum Aspergillus antigen presages a worse outcome. Standard therapy includes voriconazole, isavuconazole, or posaconazole, with great attention necessary to assess likely drug-drug interactions. Liposomal amphotericin B and echinocandins are less effective. A reduction in or stopping immunosuppression needs careful consideration, given the overall mortality of IA in renal-transplanted patients; continuing corticosteroid after the diagnosis of IA increases mortality by 2.5 times. Surgical resection or the addition of a gamma interferon should also be considered.
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Affiliation(s)
- Liyanage Shamithra Madhumali Sigera
- Division of Evolution, Genomics and Infection, School of Biological Sciences, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PL, UK
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de Almeida Campos L, Fin MT, Santos KS, de Lima Gualque MW, Freire Cabral AKL, Khalil NM, Fusco-Almeida AM, Mainardes RM, Mendes-Giannini MJS. Nanotechnology-Based Approaches for Voriconazole Delivery Applied to Invasive Fungal Infections. Pharmaceutics 2023; 15:pharmaceutics15010266. [PMID: 36678893 PMCID: PMC9863752 DOI: 10.3390/pharmaceutics15010266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/09/2022] [Accepted: 12/20/2022] [Indexed: 01/15/2023] Open
Abstract
Invasive fungal infections increase mortality and morbidity rates worldwide. The treatment of these infections is still limited due to the low bioavailability and toxicity, requiring therapeutic monitoring, especially in the most severe cases. Voriconazole is an azole widely used to treat invasive aspergillosis, other hyaline molds, many dematiaceous molds, Candida spp., including those resistant to fluconazole, and for infections caused by endemic mycoses, in addition to those that occur in the central nervous system. However, despite its broad activity, using voriconazole has limitations related to its non-linear pharmacokinetics, leading to supratherapeutic doses and increased toxicity according to individual polymorphisms during its metabolism. In this sense, nanotechnology-based drug delivery systems have successfully improved the physicochemical and biological aspects of different classes of drugs, including antifungals. In this review, we highlighted recent work that has applied nanotechnology to deliver voriconazole. These systems allowed increased permeation and deposition of voriconazole in target tissues from a controlled and sustained release in different routes of administration such as ocular, pulmonary, oral, topical, and parenteral. Thus, nanotechnology application aiming to delivery voriconazole becomes a more effective and safer therapeutic alternative in the treatment of fungal infections.
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Affiliation(s)
- Laís de Almeida Campos
- Pharmaceutical Nanotechnology Laboratory, Department of Pharmacy, Midwest State University (UNICENTRO), Alameda Élio Antonio Dalla Vecchia St, 838, Guarapuava 85040-167, PR, Brazil
| | - Margani Taise Fin
- Pharmaceutical Nanotechnology Laboratory, Department of Pharmacy, Midwest State University (UNICENTRO), Alameda Élio Antonio Dalla Vecchia St, 838, Guarapuava 85040-167, PR, Brazil
| | - Kelvin Sousa Santos
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara Jaú, Km 01, Araraquara 14801-902, SP, Brazil
| | - Marcos William de Lima Gualque
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara Jaú, Km 01, Araraquara 14801-902, SP, Brazil
| | - Ana Karla Lima Freire Cabral
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara Jaú, Km 01, Araraquara 14801-902, SP, Brazil
| | - Najeh Maissar Khalil
- Pharmaceutical Nanotechnology Laboratory, Department of Pharmacy, Midwest State University (UNICENTRO), Alameda Élio Antonio Dalla Vecchia St, 838, Guarapuava 85040-167, PR, Brazil
| | - Ana Marisa Fusco-Almeida
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara Jaú, Km 01, Araraquara 14801-902, SP, Brazil
| | - Rubiana Mara Mainardes
- Pharmaceutical Nanotechnology Laboratory, Department of Pharmacy, Midwest State University (UNICENTRO), Alameda Élio Antonio Dalla Vecchia St, 838, Guarapuava 85040-167, PR, Brazil
- Correspondence: (R.M.M.); (M.J.S.M.-G.)
| | - Maria José Soares Mendes-Giannini
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University (UNESP), Rodovia Araraquara Jaú, Km 01, Araraquara 14801-902, SP, Brazil
- Correspondence: (R.M.M.); (M.J.S.M.-G.)
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8
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Kably B, Launay M, Derobertmasure A, Lefeuvre S, Dannaoui E, Billaud EM. Antifungal Drugs TDM: Trends and Update. Ther Drug Monit 2022; 44:166-197. [PMID: 34923544 DOI: 10.1097/ftd.0000000000000952] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 12/09/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE The increasing burden of invasive fungal infections results in growing challenges to antifungal (AF) therapeutic drug monitoring (TDM). This review aims to provide an overview of recent advances in AF TDM. METHODS We conducted a PubMed search for articles during 2016-2020 using "TDM" or "pharmacokinetics" or "drug-drug-interaction" with "antifungal," consolidated for each AF. Selection was limited to English language articles with human data on drug exposure. RESULTS More than 1000 articles matched the search terms. We selected 566 publications. The latest findings tend to confirm previous observations in real-life clinical settings. The pharmacokinetic variability related to special populations is not specific but must be considered. AF benefit-to-risk ratio, drug-drug interaction (DDI) profiles, and minimal inhibitory concentrations for pathogens must be known to manage at-risk situations and patients. Itraconazole has replaced ketoconazole in healthy volunteers DDI studies. Physiologically based pharmacokinetic modeling is widely used to assess metabolic azole DDI. AF prophylactic use was studied more for Aspergillus spp. and Mucorales in oncohematology and solid organ transplantation than for Candida (already studied). Emergence of central nervous system infection and severe infections in immunocompetent individuals both merit special attention. TDM is more challenging for azoles than amphotericin B and echinocandins. Fewer TDM requirements exist for fluconazole and isavuconazole (ISZ); however, ISZ is frequently used in clinical situations in which TDM is recommended. Voriconazole remains the most challenging of the AF, with toxicity limiting high-dose treatments. Moreover, alternative treatments (posaconazole tablets, ISZ) are now available. CONCLUSIONS TDM seems to be crucial for curative and/or long-term maintenance treatment in highly variable patients. TDM poses fewer cost issues than the drugs themselves or subsequent treatment issues. The integration of clinical pharmacology into multidisciplinary management is now increasingly seen as a part of patient care.
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Affiliation(s)
- Benjamin Kably
- Laboratoire de Pharmacologie-Toxicologie, Hôpital Européen Georges Pompidou, AP-HP Centre
- Faculté de Médecine, Université de Paris, Paris, France
| | - Manon Launay
- Laboratoire de Pharmacologie-Toxicologie-Gaz du sang, Hôpital Nord-CHU Saint Etienne, Saint-Etienne
| | - Audrey Derobertmasure
- Laboratoire de Pharmacologie-Toxicologie, Hôpital Européen Georges Pompidou, AP-HP Centre
| | - Sandrine Lefeuvre
- Laboratoire de Toxicologie et Pharmacocinétique, CHU de Poitiers, Poitiers; and
| | - Eric Dannaoui
- Faculté de Médecine, Université de Paris, Paris, France
- Unité de Parasitologie-Mycologie, Laboratoire de Microbiologie, Hôpital Européen Georges Pompidou, Paris, France
| | - Eliane M Billaud
- Laboratoire de Pharmacologie-Toxicologie, Hôpital Européen Georges Pompidou, AP-HP Centre
- Faculté de Médecine, Université de Paris, Paris, France
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9
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Wen Y, Chen S, Yuan Y, Shao Q, He X, Qiao H. A quantitative HPLC method for simultaneous determination of prodrug of voriconazole and voriconazole in beagle plasma, and its application to a toxicokinetic study. ACTA CHROMATOGR 2021. [DOI: 10.1556/1326.2021.00886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Abstract
A simple, rapid, efficient and reproducible method based on High Performance Liquid Chromatography (HPLC) for simultaneous determination of prodrug of voriconazole (POV) and voriconazole in beagle plasma has been established and validated. Omeprazole was utilized as the sole internal standard. Analytes and internal standards were extracted through protein precipitation and separated on a Venusil XBP C18 chromatography column (4.6 × 250 mm, 5 µm). The mobile phase was methanol and 20 mmol/L potassium dihydrogen phosphate. Chromatographic separation was achieved by using an isocratic elution procedure that used 65% methanol and a flow rate of 1 mL/min. The ultraviolet (UV) detection wavelength was 256 nm and the total running time was 15 min. This method showed good linear ranges of 100–75,000 ng/mL for voriconazole prodrug and 200–100,000 ng/mL for voriconazole respectively. The precision and accuracy were acceptable. Analytes in plasma samples are stable under different temperatures and storage conditions. The developed HPLC method has been successfully applied to the studies of toxicokinetics of POV after intravenous drip in beagle and provided important information for the further development and application.
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Affiliation(s)
- Yufa Wen
- 1 Nanjing Tech University, Nanjing 211816, China
| | - Shuang Chen
- 1 Nanjing Tech University, Nanjing 211816, China
| | - Yanjuan Yuan
- 1 Nanjing Tech University, Nanjing 211816, China
| | - Qing Shao
- 2 Jiangsu Provincial Institute of Materia Medica, Nanjing 211816, China
| | - Xuejun He
- 1 Nanjing Tech University, Nanjing 211816, China
| | - Hongqun Qiao
- 1 Nanjing Tech University, Nanjing 211816, China
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El-Mahallawy HA, El-Gendi R, Ghaith DM, Behiry IK, Helal SF. Galactomannan and 1, 3-β-D-Glucan Assay in Bronchoalveolar Lavage Fluid for the Diagnosis of Invasive Pulmonary Aspergillosis in Malignant and Non-malignant Patients. Open Access Maced J Med Sci 2021. [DOI: 10.3889/oamjms.2021.5994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Serum 1, 3-β-D-glucan (BDG) assay was recommended for diagnosing fungal infections.
AIM: We aimed to assess 1, 3-β-D-glucan in bronchoalveolar lavage (BAL) fluid in invasive pulmonary aspergillosis (IPA).
METHODS: Out of 104 patients clinically suspected fungal, 45 were probable, 18 possible, and 41 unlikely according to EORTC/MSG 2008 criteria. Measuring BAL BDG and galactomannan were done.
RESULTS: The sensitivity, specificity, and positive and negative predictive values (PPV and NPV) for BDG were 44%, 71%, 62%, and 54%; for galactomannan 84%, 83%, 84%, and 83%; and 93%, 66%, 75%, and 90%, respectively, when combining both tests. A significant different performance of GM; p = 0.0008 was detected in patients with malignant disorders when compared to non-malignant; but not for BDG; p = 0.121.
CONCLUSION: We can conclude that BAL-BDG is helpful if positive in a clinically suspected IFI case, but if negative cannot rule out fungal infection. Thus, combining results of BAL-GM and BAL-BDG are recommended.
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11
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Sabino R, Gonçalves P, Martins Melo A, Simões D, Oliveira M, Francisco M, Viegas C, Carvalho D, Martins C, Ferreira T, Toscano C, Simões H, Veríssimo C. Trends on Aspergillus Epidemiology-Perspectives from a National Reference Laboratory Surveillance Program. J Fungi (Basel) 2021; 7:jof7010028. [PMID: 33418997 PMCID: PMC7825284 DOI: 10.3390/jof7010028] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 12/23/2020] [Accepted: 12/30/2020] [Indexed: 12/17/2022] Open
Abstract
Identification of Aspergillus to species level is important since sibling species may display variable susceptibilities to multiple antifungal drugs and also because correct identification contributes to improve the knowledge of epidemiological studies. Two retrospective laboratory studies were conducted on Aspergillus surveillance at the Portuguese National Mycology Reference Laboratory. The first, covering the period 2017–2018, aimed to study the molecular epidemiology of 256 Aspergillus isolates obtained from patients with respiratory, subcutaneous, or systemic infections and from environmental samples. The second, using our entire collection of clinical and environmental A. fumigatus isolates (N = 337), collected between 2012 and 2019, aimed to determine the frequency of azole-resistant A. fumigatus isolates. Aspergillus fumigatus sensu stricto was the most frequent species in both clinical and environmental samples. Overall, and considering all Aspergillus sections identified, a high frequency of cryptic species was detected, based on beta-tubulin or calmodulin sequencing (37% in clinical and 51% in environmental isolates). Regarding all Fumigati isolates recovered from 2012–2019, the frequency of cryptic species was 5.3% (18/337), with the identification of A. felis (complex), A. lentulus, A. udagawae, A. hiratsukae, and A. oerlinghauensis. To determine the frequency of azole resistance of A. fumigatus, isolates were screened for azole resistance using azole-agars, and 53 possible resistant isolates were tested by the CLSI microdilution reference method. Nine A. fumigatus sensu stricto and six Fumigati cryptic isolates showed high minimal inhibitory concentrations to itraconazole, voriconazole, and/or posaconazole. Real-time PCR to detect cyp51A mutations and sequencing of cyp51A gene and its promoter were performed. The overall frequency of resistance to azoles in A. fumigatus sensu stricto was 3.0%. With this retrospective analysis, we were able to detect one azole-resistant G54R mutant A. fumigatus environmental isolate, collected in 2015. The TR34/L98H mutation, linked to environmental transmission route of azole resistance, was the most frequently detected mutation (N = 4; 1.4%). Our findings underline the demand for correct identification and susceptibility testing of Aspergillus isolates.
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Affiliation(s)
- Raquel Sabino
- Infectious Diseases Department, National Health Institute Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal; (P.G.); (A.M.M.); (D.S.); (M.O.); (M.F.); (H.S.); (C.V.)
- Correspondence: ; Tel.: +351-217519247
| | - Paulo Gonçalves
- Infectious Diseases Department, National Health Institute Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal; (P.G.); (A.M.M.); (D.S.); (M.O.); (M.F.); (H.S.); (C.V.)
- European Programme for Public Health Microbiology Training (EUPHEM), European Centre for Disease Prevention and Control, 16973 Solna, Sweden
| | - Aryse Martins Melo
- Infectious Diseases Department, National Health Institute Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal; (P.G.); (A.M.M.); (D.S.); (M.O.); (M.F.); (H.S.); (C.V.)
- Programa de Pós-Graduação em Microbiologia e Parasitologia, Instituto de Biologia, Universidade Federal de Pelotas, Avenida Eliseu Maciel, Pelotas 96010-610, Brazil
| | - Daniela Simões
- Infectious Diseases Department, National Health Institute Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal; (P.G.); (A.M.M.); (D.S.); (M.O.); (M.F.); (H.S.); (C.V.)
| | - Mariana Oliveira
- Infectious Diseases Department, National Health Institute Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal; (P.G.); (A.M.M.); (D.S.); (M.O.); (M.F.); (H.S.); (C.V.)
| | - Mariana Francisco
- Infectious Diseases Department, National Health Institute Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal; (P.G.); (A.M.M.); (D.S.); (M.O.); (M.F.); (H.S.); (C.V.)
| | - Carla Viegas
- H&TRC—Health & Technology Research Center, ESTeSL—Escola Superior de Tecnologia da Saúde, Instituto Politécnico de Lisboa, 1990-096 Lisbon, Portugal;
- NOVA National School of Public Health, Public Health Research Centre, Universidade NOVA de Lisboa, 1600-560 Lisbon, Portugal
- Comprehensive Health Research Center (CHRC), 1169-056 Lisbon, Portugal
| | - Dinah Carvalho
- Centro Hospitalar Universitário Lisboa Norte EPE, 1649-028 Lisbon, Portugal; (D.C.); (C.M.)
| | - Carlos Martins
- Centro Hospitalar Universitário Lisboa Norte EPE, 1649-028 Lisbon, Portugal; (D.C.); (C.M.)
| | - Teresa Ferreira
- Centro Hospitalar Universitário Lisboa Central, 1050-099 Lisbon, Portugal;
| | - Cristina Toscano
- Microbiology Laboratory, Centro Hospitalar Lisboa Ocidental, Hospital Egas Moniz, 1349-019 Lisbon, Portugal;
| | - Helena Simões
- Infectious Diseases Department, National Health Institute Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal; (P.G.); (A.M.M.); (D.S.); (M.O.); (M.F.); (H.S.); (C.V.)
| | - Cristina Veríssimo
- Infectious Diseases Department, National Health Institute Dr. Ricardo Jorge, 1649-016 Lisbon, Portugal; (P.G.); (A.M.M.); (D.S.); (M.O.); (M.F.); (H.S.); (C.V.)
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12
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Lange N, Wantia N, Jörger AK, Wagner A, Liesche F, Meyer B, Gempt J. Fungal brain infection-no longer a death sentence. Neurosurg Rev 2020; 44:2239-2244. [PMID: 33037537 PMCID: PMC8338824 DOI: 10.1007/s10143-020-01410-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/25/2020] [Accepted: 10/02/2020] [Indexed: 12/20/2022]
Abstract
The aim of this case series was to provide a modern cohort of patients with cerebral aspergillosis and show the effectiveness of modern treatment concepts. In a 10-year period from January 2009 to January 2019, we identified 10 patients (6 male, 4 female) who received surgery or frameless stereotactic drainage of a cerebral aspergilloma at our center. Patients’ and disease characteristics were recorded. The median age was 65 (range 45 to 83). We conducted 133 cranial surgeries in 100 patients due to cerebral brain abscess (BA) during that time, which leads to a percentage of 10% of aspergilloma within BAs in our patient sample. We performed 3.1 surgeries per patient followed by antifungal treatment for 6 months (= median) according to the microbiological findings. Regarding comorbidities, the mean Charlson comorbidity index (CCI) at the time of admission was 5, representing an estimated 10-year survival of 21%. Six (60%) of 10 patients showed conditions of immunosuppression, one suffered endocarditis after replacement of aortic valves. Four patients showed associated frontobasal bone destruction, mycotic aneurysms, or thromboses. The mean duration of hospital stay was 37 days. Mortality was much lower than in literature. Sixty percent of the patients died during the follow-up period. The outcome of the two immunocompetent patients was more favorable. Cerebral aspergillosis is a rare, but still life-threatening, condition, which predominantly occurs in immunosuppressive conditions. Due to radical surgical and antifungal therapy for several months, mortality can be reduced dramatically.
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Affiliation(s)
- Nicole Lange
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany.
| | - Nina Wantia
- Department of Microbiology, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Ann-Kathrin Jörger
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Arthur Wagner
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Friederike Liesche
- Department of Neuropathology, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Bernhard Meyer
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Jens Gempt
- Department of Neurosurgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
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13
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Ruhnke M, Cornely OA, Schmidt-Hieber M, Alakel N, Boell B, Buchheidt D, Christopeit M, Hasenkamp J, Heinz WJ, Hentrich M, Karthaus M, Koldehoff M, Maschmeyer G, Panse J, Penack O, Schleicher J, Teschner D, Ullmann AJ, Vehreschild M, von Lilienfeld-Toal M, Weissinger F, Schwartz S. Treatment of invasive fungal diseases in cancer patients-Revised 2019 Recommendations of the Infectious Diseases Working Party (AGIHO) of the German Society of Hematology and Oncology (DGHO). Mycoses 2020; 63:653-682. [PMID: 32236989 DOI: 10.1111/myc.13082] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/05/2020] [Accepted: 03/10/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Invasive fungal diseases remain a major cause of morbidity and mortality in cancer patients undergoing intensive cytotoxic therapy. The choice of the most appropriate antifungal treatment (AFT) depends on the fungal species suspected or identified, the patient's risk factors (eg length and depth of granulocytopenia) and the expected side effects. OBJECTIVES Since the last edition of recommendations for 'Treatment of invasive fungal infections in cancer patients' of the Infectious Diseases Working Party (AGIHO) of the German Society of Hematology and Medical Oncology (DGHO) in 2013, treatment strategies were gradually moving away from solely empirical therapy of presumed or possible invasive fungal diseases (IFDs) towards pre-emptive therapy of probable IFD. METHODS The guideline was prepared by German clinical experts for infections in cancer patients in a stepwise consensus process. MEDLINE was systematically searched for English-language publications from January 1975 up to September 2019 using the key terms such as 'invasive fungal infection' and/or 'invasive fungal disease' and at least one of the following: antifungal agents, cancer, haematological malignancy, antifungal therapy, neutropenia, granulocytopenia, mycoses, aspergillosis, candidosis and mucormycosis. RESULTS AFT of IFDs in cancer patients may include not only antifungal agents but also non-pharmacologic treatment. In addition, the armamentarium of antifungals for treatment of IFDs has been broadened (eg licensing of isavuconazole). Additional antifungals are currently under investigation or in clinical trials. CONCLUSIONS Here, updated recommendations for the treatment of proven or probable IFDs are given. All recommendations including the levels of evidence are summarised in tables to give the reader rapid access to key information.
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Affiliation(s)
- Markus Ruhnke
- Division of Haematology, Oncology and Palliative Care, Department of Internal Medicine, Evangelisches Klinikum Bethel, Bielefeld, Germany
| | - Oliver A Cornely
- Department I of Internal Medicine, Faculty of Medicine, University of Cologne, Cologne, Germany.,ECMM Excellence Centre of Medical Mycology, Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany.,Clinical Trials Centre Cologne (ZKS Köln), University of Cologne, Cologne, Germany
| | | | - Nael Alakel
- Department I of Internal Medicine, Haematology and Oncology, University Hospital Dresden, Dresden, Germany
| | - Boris Boell
- Department I of Internal Medicine, Faculty of Medicine, University of Cologne, Cologne, Germany
| | - Dieter Buchheidt
- Department of Hematology and Oncology, Mannheim University Hospital, Heidelberg University, Mannheim, Germany
| | - Maximilian Christopeit
- Department of Stem Cell Transplantation & Oncology, University Medical Center Eppendorf, Hamburg, Germany
| | - Justin Hasenkamp
- Clinic for Haematology and Medical Oncology with Department for Stem Cell Transplantation, University Medicine Göttingen, Göttingen, Germany
| | - Werner J Heinz
- Schwerpunkt Infektiologie, Medizinische Klinik und Poliklinik II, Universitätsklinikum Würzburg, Würzburg, Germany
| | - Marcus Hentrich
- Hämatologie und Internistische Onkologie, Innere Medizin III, Rotkreuzklinikum München, München, Germany
| | - Meinolf Karthaus
- Department of Haematology & Oncology, Municipal Hospital Neuperlach, München, Germany
| | - Michael Koldehoff
- Klinik für Knochenmarktransplantation, Westdeutsches Tumorzentrum Essen, Universitätsklinikum Essen (AöR), Essen, Germany
| | - Georg Maschmeyer
- Department of Hematology, Onclogy and Palliative Care, Klinikum Ernst von Bergmann, Potsdam, Germany
| | - Jens Panse
- Klinik für Onkologie, Hämatologie und Stammzelltransplantation, Universitätsklinikum Aachen, Aachen, Germany
| | - Olaf Penack
- Division of Haematology & Oncology, Department of Internal Medicine, Charité University Medicine, Campus Rudolf Virchow, Berlin, Germany
| | - Jan Schleicher
- Klinik für Hämatologie Onkologie und Palliativmedizin, Katharinenhospital, Stuttgart, Germany
| | - Daniel Teschner
- III. Medizinische Klinik und Poliklinik, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - Andrew John Ullmann
- Department of Internal Medicine II, Julius Maximilians University, Würzburg, Germany
| | - Maria Vehreschild
- Department I of Internal Medicine, Faculty of Medicine, University of Cologne, Cologne, Germany.,ECMM Excellence Centre of Medical Mycology, Cologne, Germany.,Zentrum für Innere Medizin, Infektiologie, Goethe Universität Frankfurt, Frankfurt am Main, Deutschland.,Deutsches Zentrum für Infektionsforschung (DZIF), Standort Bonn-Köln, Deutschland
| | - Marie von Lilienfeld-Toal
- Klinik für Innere Medizin II, Abteilung für Hämatologie und Internistische Onkologie, Universitätsklinikum Jena, Jena, Germany
| | - Florian Weissinger
- Division of Haematology, Oncology and Palliative Care, Department of Internal Medicine, Evangelisches Klinikum Bethel, Bielefeld, Germany
| | - Stefan Schwartz
- Division of Haematology & Oncology, Department of Internal Medicine, Charité University Medicine, Campus Benjamin Franklin, Berlin, Germany
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14
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Lester R, Church D, Ambasta A. Disseminated cerebral aspergillosis complicated by thrombotic microangiopathy. Med Mycol Case Rep 2019; 25:25-28. [PMID: 31334000 PMCID: PMC6620712 DOI: 10.1016/j.mmcr.2019.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 06/26/2019] [Accepted: 07/04/2019] [Indexed: 11/20/2022] Open
Abstract
Invasive aspergillosis (IA) is a serious condition that can affect almost any organ. Cerebral aspergillosis itself is rapidly fatal without treatment. We report a case of disseminated cerebral IA in a patient exposed to cyclophosphamide, rituximab and prednisone. This case is unique because: 1) disseminated IA has not been described in anti-glomerular basement membrane glomerulonephritis; 2) IA led to thrombotic microangiopathy with normal ADAMTS13 and 3) voriconazole toxicity necessitated use of isavuconazole for IA treatment.
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Affiliation(s)
- Robynn Lester
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Deirdre Church
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Pathology & Laboratory Medicine and Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Anshula Ambasta
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.,Department of Medicine, University of Calgary, Calgary, Alberta, Canada.,Ward of the 21 Century, University of Calgary, Calgary, Alberta, Canada
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15
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Esmaeilishirazifard E, Dariush A, Moschos SA, Keshavarz T. A novel antifungal property for the Bacillus licheniformis ComX pheromone and its possible role in inter-kingdom cross-talk. Appl Microbiol Biotechnol 2018; 102:5197-5208. [DOI: 10.1007/s00253-018-9004-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 03/20/2018] [Accepted: 04/09/2018] [Indexed: 01/13/2023]
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16
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Cho SY, Lee HJ, Lee DG. Infectious complications after hematopoietic stem cell transplantation: current status and future perspectives in Korea. Korean J Intern Med 2018; 33:256-276. [PMID: 29506345 PMCID: PMC5840605 DOI: 10.3904/kjim.2018.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 02/18/2018] [Indexed: 12/28/2022] Open
Abstract
Hematopoietic stem cell transplantation (HSCT) is a treatment for hematologic malignancies, immune deficiencies, or genetic diseases, ect. Recently, the number of HSCTs performed in Korea has increased and the outcomes have improved. However, infectious complications account for most of the morbidity and mortality after HSCT. Post-HSCT infectious complications are usually classified according to the time after HSCT: pre-engraftment, immediate post-engraftment, and late post-engraftment period. In addition, the types and risk factors of infectious complications differ according to the stem cell source, donor type, conditioning intensity, region, prophylaxis strategy, and comorbidities, such as graft-versushost disease and invasive fungal infection. In this review, we summarize infectious complications after HSCT, focusing on the Korean perspectives.
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Affiliation(s)
- Sung-Yeon Cho
- Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- The Catholic Blood and Marrow Transplantation Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyeon-Jeong Lee
- Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Dong-Gun Lee
- Division of Infectious Diseases, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- The Catholic Blood and Marrow Transplantation Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Vaccine Bio Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Correspondence to Dong-Gun Lee, M.D. Division of Infectious Diseases, Department of Internal Medicine, The Catholic Blood and Marrow Transplantation Centre, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 06591, Korea Tel: +82-2-2258-6003 Fax: +82-2-535-2494 E-mail:
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