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Teng Q, Ye X, Wang B, Zhang X, Tao Z, Yin X, Yang Q. Case report: Successful combination therapy with isavuconazole and amphotericin B in treatment of disseminated Candida tropicalis infection. Front Med (Lausanne) 2024; 11:1397539. [PMID: 38978781 PMCID: PMC11228301 DOI: 10.3389/fmed.2024.1397539] [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: 03/07/2024] [Accepted: 06/10/2024] [Indexed: 07/10/2024] Open
Abstract
Disseminated candidiasis is a severe complication in patients with hematological malignancies who have undergone chemotherapy or hematopoietic stem cell transplantation. It has a high mortality rate. When disseminated candidiasis caused by Candida tropicalis involves either the brain or heart, the prognosis is extremely poor. Traditional methods such as cultures are limited in diagnosing disseminated candidiasis. We describe a case report of a 55-year-old man with acute myeloid leukemia who developed candidemia caused by Candida tropicalis after chemotherapy, which disseminated extensively to the heart, brain, skin, liver, spleen and kidneys. In this instance, the patient was rapidly diagnosed with candida infection by metagenomic next generation sequencing, and successfully treated with combination therapy of isavuconazole and amphotericin B. The patient continued with treatment of leukemia while simultaneously receiving antifungal therapy, and both leukemia and disseminated candidiasis were effectively controlled. This case report provides real-world experience for treatment of patients with leukemia complicated by disseminated candidiasis.
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Affiliation(s)
- Qibei Teng
- Department of Hematology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xueshi Ye
- Department of Hematology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Bei Wang
- Department of Ultrasound in Medicine, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xinyue Zhang
- Department of Traditional Chinese Medicine, The Children's Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Zhizhi Tao
- Department of Radiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiufeng Yin
- Department of Hematology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Qianqian Yang
- Department of Hematology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Sharma N, Wani SN, Behl T, Singh S, Zahoor I, Sehgal A, Bhatia S, Al-Harrasi A, Aleya L, Bungau S. Focusing COVID-19-associated mucormycosis: a major threat to immunocompromised COVID-19. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:9164-9183. [PMID: 36454526 PMCID: PMC9713750 DOI: 10.1007/s11356-022-24032-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 11/02/2022] [Indexed: 06/17/2023]
Abstract
COVID-19 disease has been identified to cause remarkable increase of mucormycosis infection cases in India, with the majority of cases being observed in individuals recovering from COVID-19. Mucormycosis has emanated as an outcome of the recent COVID-19 pandemic outbreak as rapidly developing fatal illness which was acquired by Mucorales fungus which is a subcategory of molds known as mucormycetes. Mucormycosis is one of the serious, sporadic mycotic illnesses which is a great threat to immunocompromised COVID-19 patients and affects people of all ages, including children with COVID-19 infections. This is associated with tissue damaging property and, therefore, causes serious clinical complications and elevated death rate. The COVID-19-associated mucormycosis or "black fungus" are the terms used interchangeably. The rapid growth of tissue necrosis presenting as "rhino-orbital-cerebral, pulmonary, cutaneous, gastrointestinal, and disseminated disease" are various clinical forms of mucormycosis. The patient's prognosis and survival can be improved with proper surgeries using an endoscopic approach for local tissue protection in conjunction with course of appropriate conventional antifungal drug like Amphotericin-B and novel drugs like Rezafungin, encochleated Amphotericin B, Orolofim, and SCY-078 which have been explored in last few years. This review provides an overview of mucormycosis including its epidemiology, pathophysiology, risk factors, its clinical forms, and therapeutic approaches for disease management like antifungal therapy, surgical debridement, and iron chelators. The published patents and ongoing clinical trials related to mucormycosis have also been mentioned in this review.
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Affiliation(s)
- Neelam Sharma
- Department of Pharmaceutics, MM College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, Haryana, 133207, India
| | | | - Tapan Behl
- School of Health Sciences and Technology, University of Petroleum and Energy Studies, Dehradun, Uttarakhand, India
| | - Sukhbir Singh
- Department of Pharmaceutics, MM College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana-Ambala, Haryana, 133207, India.
| | - Ishrat Zahoor
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Aayush Sehgal
- GHG Khalsa College of Pharmacy, Gurusar Sadhar, Ludhiana, Punjab, India
| | - Saurabh Bhatia
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Ahmed Al-Harrasi
- Natural & Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Lotfi Aleya
- Chrono-Environment Laboratory, UMR CNRS 6249, Bourgogne Franche-Comté University, Besançon, France
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, Romania
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3
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Serseg T, Benarous K, Serseg M, Rehman HM, El Bakri Y, Goumri-Said S. Discovery of inhibitors against SARS-CoV-2 associated fungal coinfections via virtual screening, ADMET evaluation, PASS, molecular docking, dynamics and pharmacophore studies. ARAB JOURNAL OF BASIC AND APPLIED SCIENCES 2022. [DOI: 10.1080/25765299.2022.2126588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
Affiliation(s)
- Talia Serseg
- Natural Sciences department, Ecole Normale Supérieure Taleb Abderrahmane, Laghouat, Algeria
- Fundamental Sciences Laboratory, Amar Telidji University, Laghouat, Algeria
| | - Khedidja Benarous
- Fundamental Sciences Laboratory, Amar Telidji University, Laghouat, Algeria
- Biology department, Amar Telidji University, Laghouat, Algeria
| | - Menaouar Serseg
- Laboratory of Hematology, Central Hospital of Army, Ain Naadja, Algiers, Algeria
| | - Hafiz Muzzammel Rehman
- School of Biochemistry and Biotechnology, University of the Punjab, Lahore, Pakistan
- Alnoorians Group of Institutes 55-Elahi Bukhsh Park, Amir Road, Shad Bagh, Shad Bagh, Lahore, Pakistan
| | - Youness El Bakri
- Department of Theoretical and Applied Chemistry, South Ural State University, Chelyabinsk, Russian Federation
| | - Souraya Goumri-Said
- College of Science, Physics Department, Alfaisal University, Riyadh, Saudi Arabia
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4
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Yang YL, Xiang ZJ, Yang JH, Wang WJ, Xu ZC, Xiang RL. Adverse Effects Associated With Currently Commonly Used Antifungal Agents: A Network Meta-Analysis and Systematic Review. Front Pharmacol 2021; 12:697330. [PMID: 34776941 PMCID: PMC8585744 DOI: 10.3389/fphar.2021.697330] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 10/18/2021] [Indexed: 11/24/2022] Open
Abstract
Background: Invasive fungal infections (IFI) is an important contributing factor in morbidity and mortality of immunocompromised and critically ill patients. Although the therapeutic effects of these drugs on IFI have been well documented, the long-term use of antifungal agents has raised concerns about drug tolerability and treatment-related toxicity risks. Methods: We searched articles published before June 30, 2020 in four electronic databases: Web of Science, Cochrane Library, embase and PubMed. Results: 66 trials were determined to meet our inclusion criteria, providing data on 18,230 participants. We sorted out 23 AEs by system organ classes and six laboratory AEs, 13 of these were used to construct 13 network meta-analyses. Compared with LAmB, anidulafungin, caspofungin, micafungin, fluconazole, and posaconazole had a significantly low incidence of discontinuation of therapy due to AEs (OR = 0.24 (0.09,0.65), 0.24 (0.13,0.43), 0.32 (0.19,0.52), 0.38 (0.23,0.62) and 0.35 (0.17,0.69), respectively). Conclusion: We found that echinocandins are the most tolerated antifungal agents with high safety. The AEs of triazole drugs are mainly concentrated on the increase in liver enzymes, nervous system disorders, especially visual disorders, gastrointestinal disorders, and cardiac diseases. LAmB is the least tolerated and has the most abundant AEs.
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Affiliation(s)
- Yan-Li Yang
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zi-Jian Xiang
- Beijing Zhiyun Data Technology Co., Ltd., Beijing, China
| | - Jing-Hua Yang
- Beijing Zhiyun Data Technology Co., Ltd., Beijing, China
| | - Wen-Jie Wang
- Beijing Zhiyun Data Technology Co., Ltd., Beijing, China
| | - Zhi-Chun Xu
- Beijing Zhiyun Data Technology Co., Ltd., Beijing, China
| | - Ruo-Lan Xiang
- Department of Physiology and Pathophysiology, Peking University School of Basic Medical Sciences, Beijing, China
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Odysseos G, Mayr U, Bozsaki G, Seidensticker C, Ehmer U, Schmid RM, Lahmer T, Dill V. Isavuconazole and Liposomal Amphotericin B as Successful Combination Therapy of Refractory Invasive Candidiasis in a Liver Transplant Recipient: A Case Report and Literature Review. Mycopathologia 2021; 187:113-120. [PMID: 34718931 PMCID: PMC8807427 DOI: 10.1007/s11046-021-00599-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 10/15/2021] [Indexed: 11/30/2022]
Abstract
Invasive fungal infections in liver transplant recipients are associated with elevated morbidity and mortality and pose a challenge to the treating physicians. Despite of lacking clinical data, the use of antifungal combination therapy is often considered to improve response rates in an immunocompromised patient population. We herein report a case of refractory invasive candidiasis in a liver transplant recipient treated successfully with a combination of isavuconazole und high-dose liposomal amphotericin B. The antimycotic combination treatment was able to clear a bloodstream infection with C. glabrata and led to regression of bilomas among tolerable side effects. The use of the above-mentioned antifungal combination therapy in a liver transplant recipient has not been reported previously. This case highlights the efficacy and safety of antifungal combination therapy in immunocompromised patients with refractory invasive candidiasis.
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Affiliation(s)
- Georgios Odysseos
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Ulrich Mayr
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Gabor Bozsaki
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Christian Seidensticker
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Ursula Ehmer
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Roland M Schmid
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Tobias Lahmer
- Klinik und Poliklinik für Innere Medizin II, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
| | - Veronika Dill
- Klinik und Poliklinik für Innere Medizin III, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Straße 22, 81675, Munich, Germany.
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Yasmin F, Najeeb H, Naeem A, Dapke K, Phadke R, Asghar MS, Shah SMI, De Berardis D, Ullah I. COVID-19 Associated Mucormycosis: A Systematic Review from Diagnostic Challenges to Management. Diseases 2021; 9:65. [PMID: 34698143 PMCID: PMC8544552 DOI: 10.3390/diseases9040065] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/02/2021] [Accepted: 09/07/2021] [Indexed: 01/08/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19) outbreak has caused significant destruction, claiming over three million lives worldwide. Post SARS-COV-2 invasion, immunosuppression with hyperglycemia and elevated ferritin levels along with steroidal treatment creates a perfect storm for opportunistic infections. There is increasing evidence of mucormycosis co-infection in COVID-19 patients, during or post-treatment. A worse prognosis, a late diagnosis, and limited guidelines of screening and management of COVID-19 associated mucormycosis have made healthcare professionals fear an epidemic alongside a pandemic. This review geographically reports cases of COVID-19 associated mucormycosis (CAM), evaluates characteristics, clinical manifestations, and outcomes of mucormycosis in COVID-19 active or recovered patients. It further describes preventive strategies and recommendations for optimal management therapy that can be adopted worldwide to curtail an impending threat to the healthcare system.
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Affiliation(s)
- Farah Yasmin
- Department of Internal Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan; (F.Y.); (A.N.)
| | - Hala Najeeb
- Department of Internal Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan; (F.Y.); (A.N.)
| | - Aisha Naeem
- Department of Internal Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan; (F.Y.); (A.N.)
| | - Kartik Dapke
- Indira Gandhi Government Medical College, Nagpur 440018, India; (K.D.); (R.P.)
| | - Rachana Phadke
- Indira Gandhi Government Medical College, Nagpur 440018, India; (K.D.); (R.P.)
| | | | | | - Domenico De Berardis
- NHS, Department of Mental Health, Psychiatric Service for Diagnosis and Treatment, Hospital “G. Mazzini”, ASL 4, 64100 Teramo, Italy;
| | - Irfan Ullah
- Department of Internal Medicine, Kabir Medical College, Gandhara University, Peshawar 25000, Pakistan;
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NOD: a web server to predict New use of Old Drugs to facilitate drug repurposing. Sci Rep 2021; 11:13540. [PMID: 34188160 PMCID: PMC8241987 DOI: 10.1038/s41598-021-92903-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 06/15/2021] [Indexed: 11/08/2022] Open
Abstract
Computational methods accelerate the drug repurposing pipelines that are a quicker and cost-effective alternative to discovering new molecules. However, there is a paucity of web servers to conduct fast, focussed, and customized investigations for identifying new uses of old drugs. We present the NOD web server, which has the mentioned characteristics. NOD uses a sensitive sequence-guided approach to identify close and distant homologs of a protein of interest. NOD then exploits this evolutionary information to suggest potential compounds from the DrugBank database that can be repurposed against the input protein. NOD also allows expansion of the chemical space of the potential candidates through similarity searches. We have validated the performance of NOD against available experimental and/or clinical reports. In 65.6% of the investigated cases in a control study, NOD is able to identify drugs more effectively than the searches made in DrugBank. NOD is freely-available at http://pauling.mbu.iisc.ac.in/NOD/NOD/ .
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Risum M, Vestergaard MB, Weinreich UM, Helleberg M, Vissing NH, Jørgensen R. Therapeutic Drug Monitoring of Isavuconazole: Serum Concentration Variability and Success Rates for Reaching Target in Comparison with Voriconazole. Antibiotics (Basel) 2021; 10:487. [PMID: 33922419 PMCID: PMC8145181 DOI: 10.3390/antibiotics10050487] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/13/2021] [Accepted: 04/21/2021] [Indexed: 12/13/2022] Open
Abstract
Isavuconazole (ISZ) is used in the treatment of aspergillosis and mucormycosis. The purpose of this study was to evaluate the therapeutic drug monitoring (TDM) of ISZ samples from a clinical setting performed at Statens Serum Institut. Materials/methods: Isavuconazole serum concentrations were determined by fluorescent detection on a UHPLC. Serum-ISZ (s-ISZ) results were included and compared to those of serum-voriconazole (s-VRZ) in a 33 month period from March 2017. Clinical data were obtained for patients receiving ISZ. The therapeutic range was initially 2-10 mg/L, but was adjusted to 2-5 mg/L during the study period except for selected patients with Mucorales infections who received off-label doses of ISZ. Results: A total of 273 s-ISZ and 1242 s-VRZ measurements from 35 and 283 patients, respectively, were included. Seventeen patients had received both ISZ and VRZ with TDM within the study period. The median s-ISZ was 4.3 mg/L (0.5-15.4 mg/L) with 83% of measurements within the therapeutic index. The median s-VRZ was 2.6 mg/L (0.2-21.9 mg/L) with 67% of measurements within the therapeutic index. The median intra-/interindividual coefficient of variation (CV) was 43.4%/54.8% for ISZ compared to 53.2%/83.3% for VRZ. For patients receiving ISZ, the adverse events were mostly gastroenteric and few drug-drug interactions were observed. Furthermore, immediate change from ISZ to VRZ treatment seemed to lead to prolonged metabolism of ISZ with detection up to 35 days after discontinuation. Conclusions: The majority of patients achieved s-ISZ levels well within the therapeutic range with less intra/interindividual CV than patients receiving VRZ.
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Affiliation(s)
- Malene Risum
- Unit of Mycology, Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen, Denmark;
- Department of Haematology, Copenhagen University Hospital, Rigshospitalet, 2100 Copenhagen, Denmark
| | - Mai-Britt Vestergaard
- Department of Respiratory Diseases, Aalborg University Hospital, 9000 Aalborg, Denmark; (M.-B.V.); (U.M.W.)
| | - Ulla Møller Weinreich
- Department of Respiratory Diseases, Aalborg University Hospital, 9000 Aalborg, Denmark; (M.-B.V.); (U.M.W.)
- The Clinical Institute, Aalborg University, 9000 Aalborg, Denmark
| | - Marie Helleberg
- Department of Infectious Diseases, Copenhagen University Hospital, Rigshospitalet, 2100 Copenhagen, Denmark;
| | - Nadja Hawwa Vissing
- Department of Paediatrics and Adolescent Medicine, Copenhagen University Hospital, Rigshospitalet, 2100 Copenhagen, Denmark;
| | - René Jørgensen
- Unit of Mycology, Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen, Denmark;
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Neofytos D, Garcia-Vidal C, Lamoth F, Lichtenstern C, Perrella A, Vehreschild JJ. Invasive aspergillosis in solid organ transplant patients: diagnosis, prophylaxis, treatment, and assessment of response. BMC Infect Dis 2021; 21:296. [PMID: 33761875 PMCID: PMC7989085 DOI: 10.1186/s12879-021-05958-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 03/04/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Invasive aspergillosis (IA) is a rare complication in solid organ transplant (SOT) recipients. Although IA has significant implications on graft and patient survival, data on diagnosis and management of this infection in SOT recipients are still limited. METHODS Discussion of current practices and limitations in the diagnosis, prophylaxis, and treatment of IA and proposal of means of assessing treatment response in SOT recipients. RESULTS Liver, lung, heart or kidney transplant recipients have common as well as different risk factors to the development of IA, thus each category needs a separate evaluation. Diagnosis of IA in SOT recipients requires a high degree of awareness, because established diagnostic tools may not provide the same sensitivity and specificity observed in the neutropenic population. IA treatment relies primarily on mold-active triazoles, but potential interactions with immunosuppressants and other concomitant therapies need special attention. CONCLUSIONS Criteria to assess response have not been sufficiently evaluated in the SOT population and CT lesion dynamics, and serologic markers may be influenced by the underlying disease and type and severity of immunosuppression. There is a need for well-orchestrated efforts to study IA diagnosis and management in SOT recipients and to develop comprehensive guidelines for this population.
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Affiliation(s)
- Dionysios Neofytos
- Service des Maladies Infectieuses, Hôpitaux Universitaires de Genève, Rue Gabrielle-Perret-Gentil 4, Geneva, Switzerland.
| | - Carolina Garcia-Vidal
- Servicio de Enfermedades Infecciosas, Hospital Clínic de Barcelona-IDIBAPS, Universitat de Barcelona, FungiCLINIC Research group (AGAUR), Barcelona, Spain
| | - Frédéric Lamoth
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital, 1011, Lausanne, Switzerland
- Department of Laboratories, Institute of Microbiology, Lausanne University Hospital, Lausanne, Switzerland
| | - Christoph Lichtenstern
- Department of Anaesthesiology, Heidelberg University Hospital, Im Neuenheimer Feld 110, Heidelberg, Germany
| | - Alessandro Perrella
- VII Department of Infectious Disease and Immunology, Hospital D. Cotugno, Naples, Italy
- CLSE-Liver Transplant Unit, Hospital A. Cardarelli, Naples, Italy
| | - Jörg Janne Vehreschild
- Medical Department II, Hematology and Oncology, University Hospital of Frankfurt, Frankfurt, Germany
- Department I for Internal Medicine, University Hospital of Cologne, Cologne, Germany
- German Centre for Infection Research, partner site Bonn-Cologne, University of Cologne, Cologne, Germany
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10
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Kasparyan G, Poojari C, Róg T, Hub JS. Cooperative Effects of an Antifungal Moiety and DMSO on Pore Formation over Lipid Membranes Revealed by Free Energy Calculations. J Phys Chem B 2020; 124:8811-8821. [PMID: 32924486 DOI: 10.1021/acs.jpcb.0c03359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Itraconazole is a triazole drug widely used in the treatment of fungal infections, and it is in clinical trials for treatment of several cancers. However, the drug suffers from poor solubility, while experiments have shown that itraconazole delivery in liposome nanocarriers improves both circulation half-life and tissue distribution. The drug release mechanism from the nanocarrier is still unknown, and it depends on several factors including membrane stability against defect formation. In this work, we used molecular dynamics simulations and potential of mean force (PMF) calculations to quantify the influence of itraconazole on pore formation over lipid membranes, and we compared the effect by itraconazole with a pore-stabilizing effect by the organic solvent dimethyl sulfoxide (DMSO). According to the PMFs, both itraconazole and DMSO greatly reduce the free energy of pore formation, by up to ∼20 kJ mol-1. However, whereas large concentrations of itraconazole of 8 mol % (relative to lipid) were required, only small concentrations of a few mole % DMSO (relative to water) were sufficient to stabilize pores. In addition, itraconazole and DMSO facilitate pore formation by different mechanisms. Whereas itraconazole predominantly aids the formation of a partial defect with a locally thinned membrane, DMSO mainly stabilizes a transmembrane water needle by shielding it from the hydrophobic core. Notably, the two distinct mechanisms act cooperatively upon adding both itraconazole and DMSO to the membrane, as revealed by an additional reduction of the pore free energy. Overall, our simulations reveal molecular mechanisms and free energies of membrane pore formation by small molecules. We suggest that the stabilization of a locally thinned membrane as well as the shielding of a transmembrane water needle from the hydrophobic membrane core may be a general mechanism by which amphiphilic molecules facilitate pore formation over lipid membranes at sufficient concentrations.
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Affiliation(s)
- Gari Kasparyan
- Theoretical Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Chetan Poojari
- Theoretical Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
| | - Tomasz Róg
- Department of Physics, Faculty of Science, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Jochen S Hub
- Theoretical Physics and Center for Biophysics, Saarland University, 66123 Saarbrücken, Germany
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11
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In Vitro Activities of Ravuconazole and Isavuconazole against Dematiaceous Fungi. Antimicrob Agents Chemother 2020; 64:AAC.00643-20. [PMID: 32571811 DOI: 10.1128/aac.00643-20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 06/13/2020] [Indexed: 12/31/2022] Open
Abstract
The in vitro activities of 11 antifungals against 84 dematiaceous fungi were tested. For most tested fungal species, the MIC values of ravuconazole and isavuconazole were lower than those obtained with itraconazole, voriconazole, and posaconazole. Ravuconazole and isavuconazole appear to be more efficient against most dematiaceous fungal infections than the other triazoles. However, some pigmented fungi, such as Bipolaris spicifera and Veronaea botryosa, remain more susceptible to other triazoles or to echinocandins.
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12
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Lockhart DEA, Stanley M, Raimi OG, Robinson DA, Boldovjakova D, Squair DR, Ferenbach AT, Fang W, van Aalten DMF. Targeting a critical step in fungal hexosamine biosynthesis. J Biol Chem 2020; 295:8678-8691. [PMID: 32341126 PMCID: PMC7324522 DOI: 10.1074/jbc.ra120.012985] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/22/2020] [Indexed: 01/06/2023] Open
Abstract
Aspergillus fumigatus is a human opportunistic fungal pathogen whose cell wall protects it from the extracellular environment including host defenses. Chitin, an essential component of the fungal cell wall, is synthesized from UDP-GlcNAc produced in the hexosamine biosynthetic pathway. As this pathway is critical for fungal cell wall integrity, the hexosamine biosynthesis enzymes represent potential targets of antifungal drugs. Here, we provide genetic and chemical evidence that glucosamine 6-phosphate N-acetyltransferase (Gna1), a key enzyme in this pathway, is an exploitable antifungal drug target. GNA1 deletion resulted in loss of fungal viability and disruption of the cell wall, phenotypes that could be rescued by exogenous GlcNAc, the product of the Gna1 enzyme. In a murine model of aspergillosis, the Δgna1 mutant strain exhibited attenuated virulence. Using a fragment-based approach, we discovered a small heterocyclic scaffold that binds proximal to the Gna1 active site and can be optimized to a selective submicromolar binder. Taken together, we have provided genetic, structural, and chemical evidence that Gna1 is an antifungal target in A. fumigatus.
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Affiliation(s)
- Deborah E A Lockhart
- School of Life Sciences, University of Dundee, Dundee, United Kingdom; Institute of Medical Sciences, Foresterhill, University of Aberdeen, Aberdeen, United Kingdom.
| | - Mathew Stanley
- School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Olawale G Raimi
- School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - David A Robinson
- Drug Discovery Unit, Wellcome Centre for Anti-Infectives Research, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Dominika Boldovjakova
- Institute of Medical Sciences, Foresterhill, University of Aberdeen, Aberdeen, United Kingdom
| | - Daniel R Squair
- School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | | | - Wenxia Fang
- School of Life Sciences, University of Dundee, Dundee, United Kingdom
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13
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Bhattacharya S, Sae-Tia S, Fries BC. Candidiasis and Mechanisms of Antifungal Resistance. Antibiotics (Basel) 2020; 9:antibiotics9060312. [PMID: 32526921 PMCID: PMC7345657 DOI: 10.3390/antibiotics9060312] [Citation(s) in RCA: 200] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/06/2020] [Accepted: 06/07/2020] [Indexed: 12/13/2022] Open
Abstract
Candidiasis can be present as a cutaneous, mucosal or deep-seated organ infection, which is caused by more than 20 types of Candida sp., with C. albicans being the most common. These are pathogenic yeast and are usually present in the normal microbiome. High-risk individuals are patients of human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS), organ transplant, and diabetes. During infection, pathogens can adhere to complement receptors and various extracellular matrix proteins in the oral and vaginal cavity. Oral and vaginal Candidiasis results from the overgrowth of Candida sp. in the hosts, causing penetration of the oral and vaginal tissues. Symptoms include white patches in the mouth, tongue, throat, and itchiness or burning of genitalia. Diagnosis involves visual examination, microscopic analysis, or culturing. These infections are treated with a variety of antifungals that target different biosynthetic pathways of the pathogen. For example, echinochandins target cell wall biosynthesis, while allylamines, azoles, and morpholines target ergosterol biosynthesis, and 5-Flucytosine (5FC) targets nucleic acid biosynthesis. Azoles are commonly used in therapeutics, however, because of its fungistatic nature, Candida sp. evolve azole resistance. Besides azoles, Candida sp. also acquire resistance to polyenes, echinochandins, and 5FC. This review discusses, in detail, the drug resistance mechanisms adapted by Candida sp.
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Affiliation(s)
- Somanon Bhattacharya
- Division of Infectious Diseases, Department of Medicine, Stony Brook University, Stony Brook, New York, NY 11794, USA; (S.S.-T.); (B.C.F.)
- Correspondence:
| | - Sutthichai Sae-Tia
- Division of Infectious Diseases, Department of Medicine, Stony Brook University, Stony Brook, New York, NY 11794, USA; (S.S.-T.); (B.C.F.)
| | - Bettina C. Fries
- Division of Infectious Diseases, Department of Medicine, Stony Brook University, Stony Brook, New York, NY 11794, USA; (S.S.-T.); (B.C.F.)
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, New York, NY 11794, USA
- Veterans Administration Medical Center, Northport, New York, NY 11768, USA
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14
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Sternal osteomyelitis secondary to Aspergillus fumigatus after cardiothoracic surgery. Med Mycol Case Rep 2020; 28:16-19. [PMID: 32274324 PMCID: PMC7132061 DOI: 10.1016/j.mmcr.2020.03.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/12/2020] [Accepted: 03/19/2020] [Indexed: 11/21/2022] Open
Abstract
Sternal Osteomyelitis from Aspergillus fumigatus in immunocompetent patients is extremely rare with limited number of cases reported so far. Here we discuss the case of a 65-year-old female with osteomyelitis of the sternum caused by Aspergillus fumigatus after undergoing coronary artery bypass graft surgery. Patient was treated with surgical debridement and prolonged antifungal therapy; however, the course was complicated due to poor adherence to antifungal therapy.
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15
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Al-Hatmi AMS, de Hoog GS, Meis JF. Multiresistant Fusarium Pathogens on Plants and Humans: Solutions in (from) the Antifungal Pipeline? Infect Drug Resist 2019; 12:3727-3737. [PMID: 31819555 PMCID: PMC6886543 DOI: 10.2147/idr.s180912] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/22/2019] [Indexed: 12/15/2022] Open
Abstract
The fungal genus Fusarium contains numerous plant pathogens causing considerable economic losses. In addition, Fusarium species are emerging as opportunistic human pathogens causing both superficial and systemic infections. Appropriate treatment of Fusarium infections in a clinical setting of neutropenia is currently not available. ESCMID and ECMM joint guidelines, following the majority of published studies, suggest early therapy with amphotericin B and voriconazole, in conjunction with surgical debridement and reversal of immunosuppression. In this review, we elaborate on the trans-kingdom pathogenicity of Fusarium. Intrinsic resistance to several antifungal drugs and the evolution of antifungal resistance over the years are highlighted. Recent studies present novel compounds that are effective against some pathogenic fungi including Fusarium. We discuss the robust and dynamic antifungal pipeline, including results from clinical trials as well as preclinical data that might appear beneficial for patients with invasive fusariosis.
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Affiliation(s)
- Abdullah MS Al-Hatmi
- Ministry of Health, Directorate General of Health Services, Ibri, Oman
- Westerdijk Fungal Biodiversity Institute, Utrecht, the Netherlands
- Centre of Expertise in Mycology Radboud University Medical Centre/Canisius Wilhelmina Hospital, Nijmegen, the Netherlands
| | - G Sybren de Hoog
- Westerdijk Fungal Biodiversity Institute, Utrecht, the Netherlands
- Centre of Expertise in Mycology Radboud University Medical Centre/Canisius Wilhelmina Hospital, Nijmegen, the Netherlands
| | - Jacques F Meis
- Centre of Expertise in Mycology Radboud University Medical Centre/Canisius Wilhelmina Hospital, Nijmegen, the Netherlands
- Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, the Netherlands
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16
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Schmidt-Hieber M, Engelhard D, Ullmann A, Ljungman P, Maertens J, Martino R, Rovira M, Shaw PJ, Robin C, Faraci M, Byrne J, Schäfer-Eckart K, Einsele H, Faber E, Rigacci L, Saccardi R, Balaguer-Rosello A, Isaksson C, Christopeit M, Tridello G, Wang J, Knelange N, Mikulska M, Cesaro S, Styczynski J. Central nervous system disorders after hematopoietic stem cell transplantation: a prospective study of the Infectious Diseases Working Party of EBMT. J Neurol 2019; 267:430-439. [PMID: 31664549 DOI: 10.1007/s00415-019-09578-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/28/2019] [Accepted: 10/10/2019] [Indexed: 12/18/2022]
Abstract
We performed a prospective study to evaluate the types and characteristics of central nervous system (CNS) disorders in patients after hematopoietic stem cell transplantation. The study included 163 episodes of CNS disorders of which 58 (36%) were infections. Proven or probable infections were documented in 34 patients and included fungi (n = 10, 29%), viruses (n = 12, 35%), Toxoplasma spp. (n = 9, 27%) and bacteria (n = 3, 9%). Non-infectious neurological disorders (n = 105, 64%) frequently encompassed metabolic/drug-induced abnormalities (n = 28, 27%) or cerebral vascular events (n = 22, 21%). Median onset times were later for infectious (day + 101) vs non-infectious neurological disorders (day + 50, p = 0.009). An unremarkable cranial CT scan was found in 33% of infection episodes. Absence of cerebrospinal fluid pleocytosis despite a normal or increased peripheral blood white blood cell count occurred in 26% of infections. Day-30 mortality rates were significantly higher for fungal (87%) vs non-fungal infections (40%, p < 0.001). Significantly higher mortality rates were also documented for cerebral vascular events than for other non-infectious disorders (86% vs 34%, p < 0.001). Our prospective study shows that diagnostic findings in CNS infections might differ between hematopoietic stem cell transplant recipients and immunocompetent hosts. Special awareness and timely initiation of adequate diagnostics are crucial to improve the prognosis of these patients.
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Affiliation(s)
- Martin Schmidt-Hieber
- Clinic for Hematology and Oncology, Carl-Thiem-Klinikum, Thiemstr. 111, 03048, Cottbus, Germany.
| | - Dan Engelhard
- Department of Pediatrics, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Andrew Ullmann
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Per Ljungman
- Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - Johan Maertens
- Department of Microbiology, Immunology, and Transplantation, KU Leuven, Leuven, Belgium
| | - Rodrigo Martino
- Hospital de la Santa Creu i Sant Pau, Autonomous University of Barcelona, Barcelona, Spain
| | - Montserrat Rovira
- Department of Hematology, Institute of Hematology and Oncology, IDIBAPS, Hospital Clinic, University of Barcelona, Josep Carreras Leukemia Research Institute, Barcelona, Spain
| | - Peter J Shaw
- The Children's Hospital at Westmead, Sydney, Australia
| | - Christine Robin
- Assistance Publique-Hopitaux de Paris, Henri Mondor University Hospital, Hematology Department and UPEC, Créteil France Hôspital Henri Mondor, Créteil, France
| | - Maura Faraci
- Hematopoietic Stem Cell Unit Transplantation, IRCCS Instituto G. Gaslini, Genova, Italy
| | - Jenny Byrne
- Nottingham University Hospital, Nottingham, UK
| | - Kerstin Schäfer-Eckart
- Clinic for Hematology and Oncology, Klinikum Nürnberg, Paracelsus Medizinische Privatuniversität, Nürnberg, Germany
| | - Hermann Einsele
- Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Edgar Faber
- Department of Hemato-Oncology, Faculty Hospital Olomouc, Faculty of Medicine and Dentistry Palacky University, Olomouc, Czech Republic
| | | | | | | | | | - Maximilian Christopeit
- Department of Stem Cell Transplantation, University Medical Center Eppendorf, Hamburg, Germany
| | - Gloria Tridello
- Pediatric Hematology Oncology, Mother and Child Hospital, Azienda Ospedaliera Universitaria Integrata, Verona, Italy.,EBMT Data Office, Leiden, The Netherlands
| | | | | | - Malgorzata Mikulska
- Division of Infectious Diseases, University of Genova, DISSAL, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - Simone Cesaro
- Pediatric Hematology Oncology, Mother and Child Hospital, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Jan Styczynski
- Department of Pediatric Hematology and Oncology, Collegium Medicum UMK, Bydgoszcz, Poland
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17
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Ashley ED. Antifungal Drugs: Special Problems Treating Central Nervous System Infections. J Fungi (Basel) 2019; 5:E97. [PMID: 31614505 PMCID: PMC6958367 DOI: 10.3390/jof5040097] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 09/29/2019] [Accepted: 09/30/2019] [Indexed: 02/07/2023] Open
Abstract
Treating fungal infections in the central nervous system (CNS) remains a challenge despite the availability of new antifungal agents. Therapy is limited by poor understanding of the kinetic properties of antifungal drugs in the CNS compounded by lack of data for many agents. In some cases, clinical response rates do not correspond to data on drug concentrations in the cerebral spinal fluid and/or brain parenchyma. In order to better characterize the use of antifungal agents in treating CNS infections, a review of the essential principles of neuroPK are reviewed. Specific data regarding antifungal drug concentrations in the cerebral spinal fluid and brain tissue are described from human data where available. Alternative dosing regimens and the role of antifungal drug concentration monitoring in treating fungal infections in the CNS are also discussed. Having a better understanding of these key concepts will help guide clinicians in determining the best treatment courses for patients with these devastating infections.
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Affiliation(s)
- Elizabeth Dodds Ashley
- Duke Center for Antimicrobial Stewardship and Infection Prevention, Duke University School of Medicine, Durham, NC 27710, USA.
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18
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Tucker EW, Pieterse L, Zimmerman MD, Udwadia ZF, Peloquin CA, Gler MT, Ganatra S, Tornheim JA, Chawla P, Caoili JC, Ritchie B, Jain SK, Dartois V, Dooley KE. Delamanid Central Nervous System Pharmacokinetics in Tuberculous Meningitis in Rabbits and Humans. Antimicrob Agents Chemother 2019; 63:e00913-19. [PMID: 31383662 PMCID: PMC6761520 DOI: 10.1128/aac.00913-19] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 07/28/2019] [Indexed: 12/17/2022] Open
Abstract
Central nervous system tuberculosis (TB) is devastating and affects vulnerable populations. Multidrug-resistant (MDR) and extensively drug-resistant (XDR) tuberculous meningitis (TBM) specifically are nearly uniformly fatal, with little information being available to guide the treatment of these patients. Delamanid (DLM), a nitro-dihydro-imidazooxazole, is a new, well-tolerated anti-TB drug with a low MIC (1 to 12 ng/ml) against Mycobacterium tuberculosis It is used for the treatment of pulmonary MDR-TB, but pharmacokinetic (PK) data for DLM in the central nervous system (CNS) of patients with TBM are not available. In the present study, we measured DLM concentrations in the brain and cerebrospinal fluid (CSF) of six rabbits with and without experimentally induced TBM receiving single-dose DLM. We report the steady-state CSF concentrations from three patients receiving DLM as part of multidrug treatment who underwent therapeutic drug monitoring. Drug was quantified using liquid chromatography-tandem mass spectrometry. In rabbits and humans, mean concentrations in CSF (in rabbits, 1.26 ng/ml at 9 h and 0.47 ng/ml at 24 h; in humans, 48 ng/ml at 4 h) were significantly lower than those in plasma (in rabbits, 124 ng/ml at 9 h and 14.5 ng/ml at 24 h; in humans, 726 ng/ml at 4 h), but the estimated free CSF/plasma ratios were generally >1. In rabbits, DLM concentrations in the brain were 5-fold higher than those in plasma (means, 518 ng/ml at 9 h and 74.0 ng/ml at 24 h). All patients with XDR-TBM receiving DLM experienced clinical improvement and survival. Collectively, these results suggest that DLM achieves adequate concentrations in brain tissue. Despite relatively low total CSF drug levels, free drug may be sufficient and DLM may have a role in treating TBM. More studies are needed to develop a fuller understanding of its distribution over time with treatment and clinical effectiveness.
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Affiliation(s)
- Elizabeth W Tucker
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Johns Hopkins All Children's Hospital, St. Petersburg, Florida, USA
| | - Lisa Pieterse
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Matthew D Zimmerman
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Zarir F Udwadia
- P.D. National Hospital and Medical Research Centre, Mumbai, India
| | - Charles A Peloquin
- University of Florida College of Pharmacy, Gainesville, Florida, USA
- Emerging Pathogens Institute, Gainesville, Florida, USA
| | | | - Shashank Ganatra
- P.D. National Hospital and Medical Research Centre, Mumbai, India
| | | | - Prerna Chawla
- P.D. National Hospital and Medical Research Centre, Mumbai, India
| | | | - Brittaney Ritchie
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sanjay K Jain
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Véronique Dartois
- Public Health Research Institute, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, New Jersey, USA
| | - Kelly E Dooley
- Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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19
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Candel FJ, Rico CM, Díaz de la Torre I, Laguna B, Martínez-Jordán J, Medrano S, Escobar-Porcel MC, López-Delgado A, López-González L, Viñuela-Prieto JM, Matesanz M, González Del Castillo J, Arribi A. Update in Infectious Diseases 2019. REVISTA ESPANOLA DE QUIMIOTERAPIA : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE QUIMIOTERAPIA 2019; 32 Suppl 2:1-9. [PMID: 31475801 PMCID: PMC6755363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The IX Course of Antimicrobials and Infectious Diseases update included a review of the main issues in clinical microbiology, epidemiology and clinical aspects for a current approach of infectious pathology. The present introduction summarizes about the most important meetings related to infectious diseases during 2018 (ECCMID, IAS, ASM and ID Week). In addition, the course provides a practical information to focus on nosocomial infection models, with immunosuppressed patients or complex multidrug-resistant pathogens. The closing lecture of this year reviewed the infection during donation process.
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Affiliation(s)
- F J Candel
- Francisco Javier Candel, Clinical Microbiology and Infectious Diseases Department. Hospital Clínico San Carlos. IML Health Institute. Avda Profesor Martín Lagos s/n - 28040. Madrid, Spain.
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20
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Considerations for Medications Commonly Utilized in the Oncology Population in the Intensive Care Unit. ONCOLOGIC CRITICAL CARE 2019. [PMCID: PMC7189427 DOI: 10.1007/978-3-319-74588-6_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
An increasing number of oncologic patients are presenting to the intensive care unit with complications from both their chronic disease states and cancer therapies due to improved survival rates. The management of these patients is complex due to immunosuppression (from the malignancy and/or treatment), metabolic complications, and diverse medication regimens with the potential for significant drug-drug interactions and overlapping adverse effects. This chapter will provide clinicians with an overview of non-chemotherapy medications frequently encountered in the critically ill oncologic patient, with a focus on practical considerations.
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21
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Antifungal Drugs Influence Neutrophil Effector Functions. Antimicrob Agents Chemother 2019; 63:AAC.02409-18. [PMID: 30910895 DOI: 10.1128/aac.02409-18] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 03/17/2019] [Indexed: 12/14/2022] Open
Abstract
There is a growing body of evidence for immunomodulatory side effects of antifungal agents on different immune cells, e.g., T cells. Therefore, the aim of our study was to clarify these interactions with regard to the effector functions of polymorphonuclear neutrophils (PMN). Human PMN were preincubated with fluconazole (FLC), voriconazole (VRC), posaconazole (POS), isavuconazole (ISA), caspofungin (CAS), micafungin (MFG), conventional amphotericin B (AMB), and liposomal amphotericin B (LAMB). PMN then were analyzed by flow cytometry for activation, degranulation, and phagocytosis and by dichlorofluorescein assay to detect reactive oxygen species (ROS). Additionally, interleukin-8 (IL-8) release was measured by enzyme-linked immunosorbent assay. POS led to enhanced activation, degranulation, and generation of ROS, whereas IL-8 release was reduced. In contrast, ISA-pretreated PMN showed decreased activation signaling, impaired degranulation, and lower generation of ROS. MFG caused enhanced expression of activation markers but impaired degranulation, phagocytosis, generation of ROS, and IL-8 release. CAS showed increased phagocytosis, whereas degranulation and generation of ROS were reduced. AMB led to activation of almost all effector functions besides impaired phagocytosis, whereas LAMB did not alter any effector functions. Independent from class, antifungal agents show variable influence on neutrophil effector functions in vitro Whether this is clinically relevant needs to be clarified.
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22
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Prakash K, Richman D. A case report of disseminated histoplasmosis and concurrent cryptococcal meningitis in a patient treated with ruxolitinib. BMC Infect Dis 2019; 19:287. [PMID: 30917797 PMCID: PMC6437885 DOI: 10.1186/s12879-019-3922-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 03/19/2019] [Indexed: 12/22/2022] Open
Abstract
Background Ruxolitinib is a highly potent janus kinase inhibitor that places its users at risk for various bacterial infections and viral reactivation. However new reports are also emerging that suggest greater immunosuppression and risk for fungal disease. Case presentation We report the case of a 51 year-old veteran from Guam, treated with ruxolitinib for polycythemia vera, who developed disseminated histoplasmosis and concurrent cryptococcal meningitis. Conclusion This case draws attention to the degree of immunosuppression that may be seen with this drug and the need for heightened vigilance for opportunistic infections in those treated with inhibitors of janus kinase/signal transducers and activators of transcription (JAK/STAT) such as ruxolitinib.
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Affiliation(s)
- Katya Prakash
- Division of Infectious Diseases, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0711, USA.
| | - Douglas Richman
- Division of Infectious Diseases, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0711, USA.,VA San Diego Healthcare System, 3350 La Jolla Village Drive, San Diego, CA, 92161, USA
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23
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Moreno-García E, Chumbita M, Puerta-Alcalde P, Cardozo C, Garcia-Vidal C. Prophylaxis of mould infections. REVISTA ESPANOLA DE QUIMIOTERAPIA : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE QUIMIOTERAPIA 2019; 32 Suppl 2:59-62. [PMID: 31475813 PMCID: PMC6755369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Invasive fungal infection continues to be an important cause of morbidity and mortality in haematological patients. Antifungal prophylaxis in these patients has remarkably increased survival since its introduction. In recent years, new antifungals have been on the rise, being more effective and having less toxicity than previous ones. Nonetheless, the number of patients at risk of fungal infection has also been increasing due to the continuous appearance of new immunosuppressive treatments. As a result of such, we face a changing situation that requires constant updating.
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Affiliation(s)
| | | | | | | | - Carolina Garcia-Vidal
- Correspondence: Carolina Garcia-Vidal Infectious Diseases Department, Hospital Clínic de Barcelona-IDIBAPS, Universitat de Barcelona, Barcelona, Spain. E-mail:
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24
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Spec A, Connolly P, Montejano R, Wheat LJ. In vitro activity of isavuconazole against fluconazole-resistant isolates of Histoplasma capsulatum. Med Mycol 2018; 56:834-837. [PMID: 29253204 DOI: 10.1093/mmy/myx130] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 10/24/2017] [Indexed: 11/13/2022] Open
Abstract
No clinical trials for histoplasmosis have been performed with the newer azoles, leaving itraconazole as the azole of choice. In vitro studies suggest that Histoplasma capsulatum from patients that relapse on fluconazole has higher minimum inhibitory concentrations (MICs) to fluconazole and voriconazole but not itraconazole and posaconazole. The newest azole, isavuconazole, shares structural similarity to voriconazole, but to date nobody has explored emergence of resistance. In vitro susceptibilities to isavucoanzole and fluconazole were performed on previously obtained isolates from the patients who relapsed on fluconazole therapy. Susceptibilities were determined by NCCLS method M27A developed for yeasts, as modified for H. capsulatum. The change in the MIC from the primary to the relapse isolate was tested using Wilcoxon Rank-Sum for paired data. Among the primary isolates, the median MICs were 1.0 (range 0.25 to 4.0) μg/ml for fluconazole and ≤0.007 (range ≤0.007 to 0.015) μg/ml for isavuconazole. In the group of relapsed isolates, the median MICs rose to 8.0 (range 0.25 to 64.0) μg/ml for fluconazole and remained unchanged at ≤0.007 (range ≤0.007 to 0.015) μg/ml for isavuconazole (P < .001). Only one isolate exhibited a nonsignificant increase in MIC to isavuconazole. Histoplasma isolates from patients who relapsed on fluconazole did not have an elevation in MICs to isavuconazole. This differs from the results previously seen with voriconazole and suggests that despite a closer structural similarity to voriconazole than itraconazole and posaconazole, isavuconazole has a higher barrier to resistance and may be effective as therapy for histoplasmosis.
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Affiliation(s)
- Andrej Spec
- Division of Infectious Diseases, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | | | - Rocio Montejano
- Internal Medicine - HIV Unit, Hospital La Paz-IdiPAZ, Madrid, Spain
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25
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Shi CR, Robinson SN, LaChance A, Mihm MC, Kroshinsky D. A 53-Year-Old Male with Relapsed Diffuse Large B-Cell Lymphoma on Chemotherapy with a New Leg Lesion. Dermatopathology (Basel) 2018; 4:31-35. [PMID: 29456999 PMCID: PMC5803737 DOI: 10.1159/000481307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Patients with underlying malignancy who develop new skin findings while acutely ill often require skin biopsy for histologic evaluation and/or culture to reach a diagnosis. Here, we present the case of a 53-year-old male with relapsed diffuse large B-cell lymphoma on chemotherapy who developed new skin lesions on the leg. On exam, there were 2 nickel-sized, erythematous to violaceous round plaques with central necrotic cores on the right lower leg with relatively nonspecific clinical features for which the initial differential diagnosis was broad. Consensus on a diagnosis was reached upon histologic evaluation of his skin biopsy in the context of his clinical setting. This diagnosis led to a change in treatment plan, with subsequent clinical improvement.
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Affiliation(s)
- Connie R Shi
- Harvard Medical School, Massachusetts General Hospital, Boston, MA, USA
| | - Sarah N Robinson
- Harvard Combined Dermatology Residency Program, Massachusetts General Hospital, Boston, MA, USA
| | - Avery LaChance
- Harvard Combined Dermatology Residency Program, Massachusetts General Hospital, Boston, MA, USA
| | - Martin C Mihm
- Department of Pathology, Massachusetts General Hospital, Boston, MA, USA
| | - Daniela Kroshinsky
- Department of Dermatology, Massachusetts General Hospital, Boston, MA, USA
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26
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Castrejón-Pérez AD, Welsh EC, Miranda I, Ocampo-Candiani J, Welsh O. Cutaneous mucormycosis. An Bras Dermatol 2018; 92:304-311. [PMID: 29186239 PMCID: PMC5514567 DOI: 10.1590/abd1806-4841.20176614] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Accepted: 02/14/2017] [Indexed: 12/31/2022] Open
Abstract
Cutaneous mucormycosis is an emerging fungal infection caused by opportunistic
fungi of the phylum Glomeromycota. It is frequent in poorly controlled diabetic
patients and individuals with immunosuppression. It is usually acquired by
direct inoculation through trauma. The clinical presentation is nonspecific, but
an indurated plaque that rapidly evolves to necrosis is a common finding.
Diagnosis should be confirmed by demonstration of the etiological agent and new
molecular diagnostic tools have recently been described. It is an invasive
life-threatening disease and in order to improve survival, a prompt diagnosis
and multidisciplinary management should be provided. The treatment of choice is
amphotericin B, but new azoles, such as posaconazole and isavuconazole, must be
considered.
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Affiliation(s)
- Ana Daniela Castrejón-Pérez
- Department of Dermatology, Universidad Autonoma de Nuevo Leon, School of Medicine, University Hospital Dr. Jose Eleuterio Gonzalez - Monterrey, Mexico
| | - Esperanza C Welsh
- Department of Dermatology, Universidad Autonoma de Nuevo Leon, School of Medicine, University Hospital Dr. Jose Eleuterio Gonzalez - Monterrey, Mexico
| | - Ivett Miranda
- Department of Dermatology, Universidad Autonoma de Nuevo Leon, School of Medicine, University Hospital Dr. Jose Eleuterio Gonzalez - Monterrey, Mexico
| | - Jorge Ocampo-Candiani
- Department of Dermatology, Universidad Autonoma de Nuevo Leon, School of Medicine, University Hospital Dr. Jose Eleuterio Gonzalez - Monterrey, Mexico
| | - Oliverio Welsh
- Department of Dermatology, Universidad Autonoma de Nuevo Leon, School of Medicine, University Hospital Dr. Jose Eleuterio Gonzalez - Monterrey, Mexico
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Keirns J, Desai A, Kowalski D, Lademacher C, Mujais S, Parker B, Schneidkraut MJ, Townsend R, Wojtkowski T, Yamazaki T, Yen M, Kowey PR. QT Interval Shortening With Isavuconazole: In Vitro and In Vivo Effects on Cardiac Repolarization. Clin Pharmacol Ther 2017; 101:782-790. [PMID: 28074556 PMCID: PMC5485736 DOI: 10.1002/cpt.620] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2017] [Indexed: 01/17/2023]
Abstract
The effects of isavuconazole (active moiety of isavuconazonium sulfate) on cardiac ion channels in vitro and cardiac repolarization clinically were assessed in a phase I, randomized, double-blind study in healthy individuals who received isavuconazole (after 2-day loading dose), at therapeutic or supratherapeutic doses daily for 11 days, moxifloxacin (400 mg q.d.), or placebo. A post-hoc analysis of the phase III SECURE trial assessed effects on cardiac safety. L-type Ca2+ channels were most sensitive to inhibition by isavuconazole. The 50% inhibitory concentrations for ion channels were higher than maximum serum concentrations of nonprotein-bound isavuconazole in vivo. In the phase I study (n = 161), isavuconazole shortened the QT interval in a dose- and plasma concentration-related manner. There were no serious treatment-emergent adverse events; palpitations and tachycardia were observed in placebo and supratherapeutic isavuconazole groups; no cardiac safety signals were detected in the SECURE study (n = 257). Isavuconazole was associated with a shortened cardiac QT interval.
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Affiliation(s)
- J Keirns
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - A Desai
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - D Kowalski
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - C Lademacher
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - S Mujais
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - B Parker
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - MJ Schneidkraut
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - R Townsend
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - T Wojtkowski
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - T Yamazaki
- Astellas Pharma Global Development, IncNorthbrookIllinoisUSA
| | - M Yen
- PAREXELGlendaleCaliforniaUSA
| | - PR Kowey
- Lankenau Medical Center and Institute for Medical Research, Main Line Health SystemWynnewoodPennsylvaniaUSA
- Jefferson Medical CollegePhiladelphiaPennsylvaniaUSA
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Khalid S, -Rahman FAU, Abbass A, Aldarondo S, Abusaada K. Pseudomembranous aspergillar tracheobronchitis in a non-neutropenic critically ill patient in the intensive care unit. J Community Hosp Intern Med Perspect 2017. [PMID: 28634525 PMCID: PMC5463668 DOI: 10.1080/20009666.2017.1287840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Invasive aspergillosis is an important cause of morbidity and mortality among immunocompromised patients. Prolonged neutropenia is the most common risk factor. It has rarely been reported to occur in non-neutropenic critically ill patients in the intensive care unit setting. Mortality rate in this group has been reported to be as high as 92%. We report a case of tracheobronchial aspergillosis in a non-neutropenic critically ill patient to highlight the fact that critically ill patients admitted in the intensive care unit can develop opportunistic infections such as invasive aspergillosis even in the absence of classic risk factors and prior history of immunosuppression. Early diagnosis and prompt initiation of antifungal therapy may improve the outcome and decrease mortality rate.
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Affiliation(s)
- Sameen Khalid
- Internal Medicine Department, Florida Hospital, Orlando, FL, USA
| | | | - Aamer Abbass
- Internal Medicine Department, Florida Hospital, Orlando, FL, USA
| | | | - Khalid Abusaada
- Internal Medicine Department, Florida Hospital, Orlando, FL, USA
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29
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Natesan SK, Chandrasekar PH. Isavuconazole for the treatment of invasive aspergillosis and mucormycosis: current evidence, safety, efficacy, and clinical recommendations. Infect Drug Resist 2016; 9:291-300. [PMID: 27994475 PMCID: PMC5153275 DOI: 10.2147/idr.s102207] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The majority of invasive mold infections diagnosed in immunocompromised cancer patients include invasive aspergillosis (IA) and mucormycosis. Despite timely and effective therapy, mortality remains considerable. Antifungal agents currently available for the management of these serious infections include triazoles, polyenes, and echinocandins. Until recently, posaconazole has been the only triazole with a broad spectrum of anti-mold activity against both Aspergillus sp. and mucorales. Other clinically available triazoles voriconazole and itraconazole, with poor activity against mucorales, have significant drug interactions in addition to a side effect profile inherent for all triazoles. Polyenes including lipid formulations pose a problem with infusion-related side effects, electrolyte imbalance, and nephrotoxicity. Echinocandins are ineffective against mucorales and are approved as salvage therapy for refractory IA. Given that all available antifungal agents have limitations, there has been an unmet need for a broad-spectrum anti-mold agent with a favorable profile. Following phase III clinical trials that started in 2006, isavuconazole (ISZ) seems to fit this profile. It is the first novel triazole agent recently approved by the United States Food and Drug Administration (FDA) for the treatment of both IA and mucormycosis. This review provides a brief overview of the salient features of ISZ, its favorable profile with regard to spectrum of antifungal activity, pharmacokinetic and pharmacodynamic parameters, drug interactions and tolerability, clinical efficacy, and side effects.
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Affiliation(s)
- Suganthini Krishnan Natesan
- Division of Infectious Diseases, Department of Internal Medicine, Wayne State University
- John D Dingell VA Medical Center, Detroit, MI, USA
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Alevizakos M, Farmakiotis D, Mylonakis E. Updated practice guidelines for the diagnosis and management of aspergillosis: challenges and opportunities. J Thorac Dis 2016; 8:E1767-E1770. [PMID: 28149637 DOI: 10.21037/jtd.2016.12.71] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Michail Alevizakos
- Infectious Diseases Division, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Dimitrios Farmakiotis
- Infectious Diseases Division, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Eleftherios Mylonakis
- Infectious Diseases Division, Rhode Island Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA
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31
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Population Pharmacokinetics of Isavuconazole from Phase 1 and Phase 3 (SECURE) Trials in Adults and Target Attainment in Patients with Invasive Infections Due to Aspergillus and Other Filamentous Fungi. Antimicrob Agents Chemother 2016; 60:5483-91. [PMID: 27381396 PMCID: PMC4997882 DOI: 10.1128/aac.02819-15] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 06/26/2016] [Indexed: 12/11/2022] Open
Abstract
Isavuconazole, the active moiety of the water-soluble prodrug isavuconazonium sulfate, is a triazole antifungal agent used for the treatment of invasive fungal infections. The objective of this analysis was to develop a population pharmacokinetic (PPK) model to identify covariates that affect isavuconazole pharmacokinetics and to determine the probability of target attainment (PTA) for invasive aspergillosis patients. Data from nine phase 1 studies and one phase 3 clinical trial (SECURE) were pooled to develop the PPK model (NONMEM, version 7.2). Stepwise covariate modeling was performed in Perl-speaks-NONMEM, version 3.7.6. The area under the curve (AUC) at steady state was calculated for 5,000 patients by using Monte Carlo simulations. The PTA using the estimated pharmacodynamic (PD) target value (total AUC/MIC ratio) estimated from in vivo PD studies of invasive aspergillosis over a range of MIC values was calculated using simulated patient AUC values. A two-compartment model with a Weibull absorption function and a first-order elimination process adequately described plasma isavuconazole concentrations. The mean estimate for isavuconazole clearance was 2.360 liters/h (percent coefficient of variation [%CV], 34%), and the mean AUC from 0 to 24 h (AUC0-24) was ∼100 mg·h/liter. Clearance was approximately 36% lower in Asians than in Caucasians. The PTA calculated over a range of MIC values by use of the nonneutropenic murine efficacy index corresponding to 90% survival indicated that adequate isavuconazole exposures were achieved in >90% of simulated patients to treat infections with MICs up to and including 1 mg/liter according to European Committee on Antimicrobial Susceptibility Testing methodology and in >90% of simulated patients for infections with MICs up to and including 0.5 mg/liter according to Clinical and Laboratory Standards Institute methodology. The highest MIC result for PTA was the same for Caucasian and Asian patients.
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Wilson DT, Dimondi VP, Johnson SW, Jones TM, Drew RH. Role of isavuconazole in the treatment of invasive fungal infections. Ther Clin Risk Manag 2016; 12:1197-206. [PMID: 27536124 PMCID: PMC4977098 DOI: 10.2147/tcrm.s90335] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Despite recent advances in both diagnosis and prevention, the incidence of invasive fungal infections continues to rise. Available antifungal agents to treat invasive fungal infections include polyenes, triazoles, and echinocandins. Unfortunately, individual agents within each class may be limited by spectrum of activity, resistance, lack of oral formulations, significant adverse event profiles, substantial drug–drug interactions, and/or variable pharmacokinetic profiles. Isavuconazole, a second-generation triazole, was approved by the US Food and Drug Administration in March 2015 and the European Medicines Agency in July 2015 for the treatment of adults with invasive aspergillosis (IA) or mucormycosis. Similar to amphotericin B and posaconazole, isavuconazole exhibits a broad spectrum of in vitro activity against yeasts, dimorphic fungi, and molds. Isavuconazole is available in both oral and intravenous formulations, exhibits a favorable safety profile (notably the absence of QTc prolongation), and reduced drug–drug interactions (relative to voriconazole). Phase 3 studies have evaluated the efficacy of isavuconazole in the management of IA, mucormycosis, and invasive candidiasis. Based on the results of these studies, isavuconazole appears to be a viable treatment option for patients with IA as well as those patients with mucormycosis who are not able to tolerate or fail amphotericin B or posaconazole therapy. In contrast, evidence of isavuconazole for invasive candidiasis (relative to comparator agents such as echinocandins) is not as robust. Therefore, isavuconazole use for invasive candidiasis may initially be reserved as a step-down oral option in those patients who cannot receive other azoles due to tolerability or spectrum of activity limitations. Post-marketing surveillance of isavuconazole will be important to better understand the safety and efficacy of this agent, as well as to better define the need for isavuconazole serum concentration monitoring.
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Affiliation(s)
- Dustin T Wilson
- Department of Pharmacy Practice, Campbell University College of Pharmacy & Health Sciences, Buies Creek, NC, USA; Department of Pharmacy, Duke University Hospital, Durham, NC, USA
| | - V Paul Dimondi
- Department of Pharmacy Practice, Campbell University College of Pharmacy & Health Sciences, Buies Creek, NC, USA; Department of Pharmacy, Durham VA Medical Center, Durham, NC, USA
| | - Steven W Johnson
- Department of Pharmacy Practice, Campbell University College of Pharmacy & Health Sciences, Buies Creek, NC, USA; Department of Pharmacy, Forsyth Medical Center, Winston-Salem, NC, USA
| | - Travis M Jones
- Department of Pharmacy Practice, Campbell University College of Pharmacy & Health Sciences, Buies Creek, NC, USA
| | - Richard H Drew
- Department of Pharmacy Practice, Campbell University College of Pharmacy & Health Sciences, Buies Creek, NC, USA; Division of Infectious Diseases, Duke University Hospital, Durham, NC, USA
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33
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Lockhart SR, Berkow EL. Hot topics in antifungal susceptibility testing: A new drug, a bad bug, sweeping caspofungin testing under the rug, and solving the ECV shrug. CLINICAL MICROBIOLOGY NEWSLETTER 2016; 38:103-108. [PMID: 29545657 PMCID: PMC5849271 DOI: 10.1016/j.clinmicnews.2016.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
There are several new hot topics in antifungals and antifungal susceptibility testing. In this review, four topics of general interest to the clinical microbiology community are discussed. The first topic is the introduction of isavuconazole, a new triazole approved for clinical use in the US. The second is triazole resistance in Aspergillus fumigatus isolates. A specific set of mutations are being found with greater frequency in isolates globally, including the US. The third topic of interest is a word of caution about antifungal susceptibility testing for caspofungin in Candida isolates; some laboratories have reported susceptible isolates with high MIC values that would be interpreted as resistant. The final topic is an introduction to epidemiological cutoff values and their use in the clinical mycology laboratory.
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Affiliation(s)
- Shawn R Lockhart
- Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, GA
| | - Elizabeth L Berkow
- Mycotic Diseases Branch, Centers for Disease Control and Prevention, Atlanta, GA
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Donnelley MA, Zhu ES, Thompson GR. Isavuconazole in the treatment of invasive aspergillosis and mucormycosis infections. Infect Drug Resist 2016; 9:79-86. [PMID: 27330318 PMCID: PMC4898026 DOI: 10.2147/idr.s81416] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
We have a limited arsenal with which to treat invasive fungal infections caused by Aspergillus and Mucorales. The morbidity and mortality for both pathogens remains high. A triazole antifungal, isavuconazole, was recently granted approval by the US Food and Drug Administration and the European Medicines Agency for the treatment of invasive aspergillosis and mucormycosis. A randomized double-blind comparison trial for the treatment of invasive aspergillosis found isavuconazole noninferior to voriconazole. A separate, open-label study evaluating the efficacy of isavuconazole in the treatment of mucormycosis found comparable response rates to amphotericin B and posaconazole treated historical controls. The prodrug isavuconazonium sulfate is commercially available in both an oral and intravenous formulation and is generally well tolerated. Isavuconazole’s broad spectrum of activity, limited side effect profile, and favorable pharmacokinetics will likely solidify its place in therapy.
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Affiliation(s)
- Monica A Donnelley
- Department of Inpatient Pharmacy, University of California - Davis, Sacramento, USA; Department of Clinical Sciences, Touro University College of Pharmacy, Vallejo, USA
| | - Elizabeth S Zhu
- Department of Inpatient Pharmacy, University of California - Davis, Sacramento, USA
| | - George R Thompson
- Department of Medicine, Division of Infectious Diseases, University of California - Davis, Davis, CA, USA
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35
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Zhou Y, Wang J, Gu Z, Wang S, Zhu W, Aceña JL, Soloshonok VA, Izawa K, Liu H. Next Generation of Fluorine-Containing Pharmaceuticals, Compounds Currently in Phase II-III Clinical Trials of Major Pharmaceutical Companies: New Structural Trends and Therapeutic Areas. Chem Rev 2016; 116:422-518. [PMID: 26756377 DOI: 10.1021/acs.chemrev.5b00392] [Citation(s) in RCA: 1797] [Impact Index Per Article: 224.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yu Zhou
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Jiang Wang
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Zhanni Gu
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Shuni Wang
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Wei Zhu
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - José Luis Aceña
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU , Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain.,Department of Organic Chemistry, Autónoma University of Madrid , Cantoblanco, 28049 Madrid, Spain
| | - Vadim A Soloshonok
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU , Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain.,IKERBASQUE, Basque Foundation for Science, María Díaz de Haro 3, 48013 Bilbao, Spain
| | - Kunisuke Izawa
- Hamari Chemicals Ltd., 1-4-29 Kunijima, Higashi-Yodogawa-ku, Osaka, Japan 533-0024
| | - Hong Liu
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
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Fosso MY, Shrestha SK, Green KD, Garneau-Tsodikova S. Synthesis and Bioactivities of Kanamycin B-Derived Cationic Amphiphiles. J Med Chem 2015; 58:9124-32. [PMID: 26592740 DOI: 10.1021/acs.jmedchem.5b01375] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Cationic amphiphiles derived from aminoglycosides (AGs) have been shown to exhibit enhanced antimicrobial activity. Through the attachment of hydrophobic residues such as linear alkyl chains on the AG backbone, interesting antibacterial and antifungal agents with a novel mechanism of action have been developed. Herein, we report the design and synthesis of seven kanamycin B (KANB) derivatives. Their antibacterial and antifungal activities, along with resistance/enzymatic, hemolytic, and cytotoxicity assays were also studied. Two of these compounds, with a C12 and C14 aliphatic chain attached at the 6″-position of KANB through a thioether linkage, exhibited good antibacterial and antifungal activity, were poorer substrates than KANB for several AG-modifying enzymes, and could delay the development of resistance in bacteria and fungi. Also, they were both relatively less hemolytic than the known membrane targeting antibiotic gramicidin and the known antifungal agent amphotericin B and were not toxic at their antifungal MIC values. Their oxidation to sulfones was also demonstrated to have no effect on their activities. Moreover, they both acted synergistically with posaconazole, an azole currently used in the treatment of human fungal infections.
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Affiliation(s)
- Marina Y Fosso
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky , 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | - Sanjib K Shrestha
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky , 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | - Keith D Green
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky , 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky , 789 South Limestone Street, Lexington, Kentucky 40536-0596, United States
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Shrestha SK, Fosso MY, Garneau-Tsodikova S. A combination approach to treating fungal infections. Sci Rep 2015; 5:17070. [PMID: 26594050 PMCID: PMC4655404 DOI: 10.1038/srep17070] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/23/2015] [Indexed: 12/11/2022] Open
Abstract
Azoles are antifungal drugs used to treat fungal infections such as candidiasis in humans. Their extensive use has led to the emergence of drug resistance, complicating antifungal therapy for yeast infections in critically ill patients. Combination therapy has become popular in clinical practice as a potential strategy to fight resistant fungal isolates. Recently, amphiphilic tobramycin analogues, C12 and C14, were shown to display antifungal activities. Herein, the antifungal synergy of C12 and C14 with four azoles, fluconazole (FLC), itraconazole (ITC), posaconazole (POS), and voriconazole (VOR), was examined against seven Candida albicans strains. All tested strains were synergistically inhibited by C12 when combined with azoles, with the exception of C. albicans 64124 and MYA-2876 by FLC and VOR. Likewise, when combined with POS and ITC, C14 exhibited synergistic growth inhibition of all C. albicans strains, except C. albicans MYA-2876 by ITC. The combinations of FLC-C14 and VOR-C14 showed synergistic antifungal effect against three C. albicans and four C. albicans strains, respectively. Finally, synergism between C12/C14 and POS were confirmed by time-kill and disk diffusion assays. These results suggest the possibility of combining C12 or C14 with azoles to treat invasive fungal infections at lower administration doses or with a higher efficiency.
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Affiliation(s)
- Sanjib K Shrestha
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY, 40536-0596, USA
| | - Marina Y Fosso
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY, 40536-0596, USA
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Role of New Antifungal Agents in the Treatment of Invasive Fungal Infections in Transplant Recipients: Isavuconazole and New Posaconazole Formulations. J Fungi (Basel) 2015; 1:345-366. [PMID: 29376915 PMCID: PMC5753129 DOI: 10.3390/jof1030345] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 10/06/2015] [Accepted: 10/06/2015] [Indexed: 11/30/2022] Open
Abstract
Invasive fungal infections are a major cause of morbidity and mortality among solid organ transplant (SOT) and hematopoietic stem cell transplant (HSCT) recipients. Transplant patients are at risk for such invasive fungal infections. The most common invasive fungal infections are invasive candidiasis in the SOT and invasive aspergillosis in the HSCT. In this article, we will discuss the epidemiology of invasive fungal infections in the transplant recipients and susceptibility patterns of the fungi associated with these infections. Additionally, the pharmacology and clinical efficacy of the new antifungal, isavuconazole, and the new posaconazole formulations will be reviewed. Isavuconazole is a new extended-spectrum triazole that was recently approved for the treatment of invasive aspergillosis and mucormycosis. Advantages of this triazole include the availability of a water-soluble intravenous formulation, excellent bioavailability of the oral formulation, and predictable pharmacokinetics in adults. Posaconazole, a broad-spectrum triazole antifungal agent, is approved for the prevention of invasive aspergillosis and candidiasis in addition to the treatment of oropharyngeal candidiasis. Posaconazole oral suspension solution has shown some limitations in the setting of fasting state absorption, elevated gastrointestinal pH, and increased motility. The newly approved delayed-release oral tablet and intravenous solution formulations provide additional treatment options by reducing interpatient variability and providing flexibility in these set of critically ill patients. This review will detail these most recent studies.
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Botero-Calderon L, Benjamin DK, Cohen-Wolkowiez M. Advances in the treatment of invasive neonatal candidiasis. Expert Opin Pharmacother 2015; 16:1035-48. [PMID: 25842986 PMCID: PMC4402277 DOI: 10.1517/14656566.2015.1031108] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Invasive candidiasis is responsible for ∼ 10% of nosocomial sepsis in very-low-birth-weight infants and is associated with substantial morbidity and mortality. Over the last two decades, the antifungal armamentarium against Candida spp. has increased; however, efficacy and safety studies in this population are lacking. AREAS COVERED We reviewed the medical literature and extracted information on clinical and observational studies evaluating the use of antifungal agents in neonates with invasive candidiasis. EXPERT OPINION Efficacy and safety data for antifungals in neonates are lacking, and the majority of studies conducted to date have concentrated on pharmacokinetic/pharmacodynamic evaluations. Unlike other anti-infective agents, efficacy data in the setting of neonatal candidiasis cannot be extrapolated from adult studies due to differences in the pathophysiology of the disease in this population relative to older children and adults. Data for amphotericin B deoxycholate, fluconazole, and micafungin suggest that these are the current agents of choice for this disease in neonates until data for newer antifungal agents become available. For prophylaxis, data from fluconazole randomized controlled trials will be submitted to the regulatory agencies for labeling. Ultimately, the field of therapeutics for neonatal candidiasis will require multidisciplinary collaboration given the numerous challenges associated with conducting clinical trials in neonates.
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Pharmacodynamics of isavuconazole in an Aspergillus fumigatus mouse infection model. Antimicrob Agents Chemother 2015; 59:2855-66. [PMID: 25753636 DOI: 10.1128/aac.04907-14] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 02/28/2015] [Indexed: 02/02/2023] Open
Abstract
Azole resistance is an emerging problem in Aspergillus fumigatus which translates into treatment failure. Alternative treatments with new azoles may improve therapeutic outcome in invasive aspergillosis (IA) even for strains with decreased susceptibility to current azoles. The in vivo efficacy of 0.25, 1, 4, 16, 64, 128, 256, and 512 mg/kg of body weight/day prodrug isavuconazonium sulfate (BAL8557) (isavuconazole [ISA]-equivalent doses of 0.12, 0.48, 1.92, 7.68, 30.7, 61.4, 122.9, and 245.8 mg/kg/day, respectively) administered by oral gavage was assessed in an immunocompetent murine model of IA against four clinical A. fumigatus isolates: a wild-type isolate (ISA MICEUCAST, 0.5 mg/liter) and three azole-resistant isolates harboring substitutions in the cyp51A gene: G54W (ISA MIC(EUCAST), 0.5 mg/liter), M220I (ISA MIC(EUCAST), 4 mg/liter), and TR34/L98H (ISA MIC(EUCAST), 8 mg/liter). The maximum effect (100% survival) was reached at a prodrug isavuconazonium sulfate dose of 64 mg/kg for the wild-type isolate, 128 mg/kg for the G54W mutant, and 256 mg/kg two times per day (q12) for the M220I mutant. A maximum response was not achieved with the TR34/L98H isolates with the highest dose of prodrug isavuconazonium sulfate (256 mg/kg q12). For a survival rate of 50%, the effective AUC(0-24)/MIC(EUCAST) ratio for ISA total drug was 24.73 (95% confidence interval, 22.50 to 27.18). The efficacy of isavuconazole depended on both the drug exposure and the isavuconazole MIC of the isolates. The quantitative relationship between exposure and effect (AUC(0-24)/MIC) can be used to optimize the treatment of human infections by A. fumigatus, including strains with decreased susceptibility.
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Kontoyiannis DP, Lewis RE. Treatment principles for the management of mold infections. Cold Spring Harb Perspect Med 2014; 5:cshperspect.a019737. [PMID: 25377139 DOI: 10.1101/cshperspect.a019737] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Survival rates among immunocompromised patients with invasive mold infections have markedly improved over the last decade with earlier diagnosis and new antifungal treatment options. Yet, increasing antifungal resistance, breakthrough infections with intrinsically resistant fungi, and potentially life-threatening adverse effects and drug interactions are becoming more problematic, especially with prolonged therapy. Evidence-based recommendations for treating invasive aspergillosis and mucormycosis provide excellent guidance on the initial workup and treatment of these molds, but they cannot address all of the key management issues. Herein, we discuss 10 general treatment principles in the management of invasive mold disease in immunocompromised patients and discuss how these principles can be integrated to develop an effective, individualized treatment plan.
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Affiliation(s)
| | - Russell E Lewis
- Department of Medical Sciences and Surgery, University of Bologna, 40138 Bologna, Italy
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