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Janik S, Luchowski R, Grela E, Grudzinski W, Gruszecki WI. How Does the Antibiotic Amphotericin B Enter Membranes and What Does It Do There? J Phys Chem Lett 2024; 15:4823-4827. [PMID: 38668706 PMCID: PMC11089563 DOI: 10.1021/acs.jpclett.4c00496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/29/2024] [Accepted: 04/22/2024] [Indexed: 05/15/2024]
Abstract
Amphotericin B is a popular antifungal antibiotic, but the exact way it works is still a matter of debate. Here, we used monolayers composed of phosphatidylcholine with ergosterol as a model of fungal lipid membranes to study drug incorporation from the aqueous phase and analyze the molecular reorganization of membranes underlying the biological activity of the antibiotic. The results show that the internalization of antibiotic molecules into membranes occurs only in the presence of ergosterol in the lipid phase. Comparison of images of solid-supported monolayers obtained by atomic force microscopy and lifetime imaging fluorescence microscopy shows the formation of intramembrane clusters of various sizes in the lipid phase, consisting mainly of antibiotic dimers and relatively large membrane pores (∼15 nm in diameter). The results reveal multiple modes of action of amphotericin B, acting simultaneously, each of which adversely affects the structural properties of the lipid membranes and their physiological functionality.
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Affiliation(s)
- Sebastian Janik
- Department
of Biophysics, Institute of Physics, Maria
Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Rafal Luchowski
- Department
of Biophysics, Institute of Physics, Maria
Curie-Sklodowska University, 20-031 Lublin, Poland
- Department
of Biophysics, Medical University of Lublin, 20-059 Lublin, Poland
| | - Ewa Grela
- Department
of Biophysics, Institute of Physics, Maria
Curie-Sklodowska University, 20-031 Lublin, Poland
- Division
of Biophysics, Institute of Experimental Physics, Faculty of Physics, University of Warsaw, 02-093 Warsaw, Poland
| | - Wojciech Grudzinski
- Department
of Biophysics, Institute of Physics, Maria
Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Wieslaw I. Gruszecki
- Department
of Biophysics, Institute of Physics, Maria
Curie-Sklodowska University, 20-031 Lublin, Poland
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Horr T, Muscarella J, Crocker K, Kimmerling M, Reeves T, Moreno ML, Lewis M, Young BT, Ryan Starnes J, Niehoff KM, Kripalani S. A hospital at home case report: Prolonged amphotericin B therapy via elastomeric pump. Am J Health Syst Pharm 2023; 80:227-235. [PMID: 36322643 DOI: 10.1093/ajhp/zxac331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
PURPOSE Hospital at home is an alternative means of providing inpatient care for a patient requiring prolonged liposomal amphotericin B therapy. SUMMARY Hospital at home is a unique care model that allows patients to receive inpatient hospital care within the comfort of their home and can be seen as an alternative care site for patients with complex treatment regimens that may require prolonged hospitalization. Hospital systems have increasingly begun incorporating hospital at home programs into their inpatient service lines. We present the case of a patient with disseminated histoplasmosis requiring a prolonged course of intravenous liposomal amphotericin B therapy. Because of the complex administration and stability of this medication, care is often provided in an inpatient setting. The Vanderbilt University Medical Center Hospital at Home team was able to coordinate resources and services to allow for this patient to receive acute hospital care at home and continue to receive amphotericin B infusion. CONCLUSION This experience spotlights how hospital at home can be considered for patients requiring ongoing inpatient care for prolonged intravenous treatment courses.
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Affiliation(s)
- Tara Horr
- Division of Geriatrics, Vanderbilt University Medical Center, Vanderbilt Hospital at Home, Nashville, TN, USA
| | - Joseph Muscarella
- Department of Pharmaceutical Services, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kristina Crocker
- Department of Hospital Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Megan Kimmerling
- Hospital at Home, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Tracy Reeves
- Hospital at Home, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Marion L Moreno
- Hospital at Home, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Michelle Lewis
- Department of Hospital Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Brett T Young
- Hospital at Home, Vanderbilt University Medical Center, Nashville, TN, USA
| | - J Ryan Starnes
- Hospital at Home, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Sunil Kripalani
- Center for Health Services Research, Vanderbilt University Medical Center, Nashville, TN, USA
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Kim BK, Choi JY, Hong KT, An HY, Shin HY, Kang HJ. Prospective Study on Prophylactic Micafungin Sodium against Invasive Fungal Disease during Neutropenia in Pediatric & Adolescent Patients Undergoing Autologous Hematopoietic Stem Cell Transplantation. CHILDREN 2022; 9:children9030372. [PMID: 35327744 PMCID: PMC8947337 DOI: 10.3390/children9030372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/18/2022] [Accepted: 02/28/2022] [Indexed: 11/20/2022]
Abstract
Background: Invasive fungal diseases (IFDs) increase the mortality rate of patients with neutropenia who receive chemotherapy or have previously undergone hematopoietic stem cell transplantation (HSCT). Micafungin is a broad-spectrum echinocandin with minimal toxicity and low drug interactions. We therefore investigated the efficacy and safety of prophylactic micafungin in pediatric and adolescent patients who underwent autologous HSCT. Methods: This was a phase II, prospective, single-center, open-label, and single-arm study. From November 2011 to February 2017, 125 patients were screened from Seoul National University Children’s Hospital, Korea, and 112 were enrolled. Micafungin was administered intravenously at a dose of 1 mg/kg/day (maximum 50 mg/day) from day 8 of autologous HSCT until neutrophil engraftment. Treatment success was defined as the absence of proven, probable, or possible IFD up to 4 weeks after therapy. Results: The study protocol was achieved without premature interruption in 110 patients (98.2%). The reasons interrupting micafungin treatment included early death (n = 1) and patient refusal (n = 1). Treatment success was achieved in 109 patients (99.1%). Only one patient was diagnosed with probable IFD. No patients were diagnosed with possible or proven IFD. In the full analysis set, 21 patients (18.8%) experienced 22 adverse events (AEs); however, all AEs were classified as “unlikely” related to micafungin. No patient experienced grade IV AEs nor discontinued treatment, and none of the deaths were related to micafungin. Conclusions: Our study demonstrated that micafungin is a safe and effective option for antifungal prophylaxis in pediatric patients who underwent autologous HSCT, with promising efficacy without significant AEs.
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Affiliation(s)
- Bo-Kyung Kim
- Department of Pediatrics, College of Medicine, Seoul National University, Seoul 03080, Korea; (B.-K.K.); (J.-Y.C.); (K.-T.H.); (H.-Y.A.); (H.-Y.S.)
- Cancer Research Institute, Seoul National University, Seoul 03080, Korea
- Wide River Institute of Immunology, Hongcheon 25159, Korea
| | - Jung-Yoon Choi
- Department of Pediatrics, College of Medicine, Seoul National University, Seoul 03080, Korea; (B.-K.K.); (J.-Y.C.); (K.-T.H.); (H.-Y.A.); (H.-Y.S.)
- Cancer Research Institute, Seoul National University, Seoul 03080, Korea
- Wide River Institute of Immunology, Hongcheon 25159, Korea
| | - Kyung-Taek Hong
- Department of Pediatrics, College of Medicine, Seoul National University, Seoul 03080, Korea; (B.-K.K.); (J.-Y.C.); (K.-T.H.); (H.-Y.A.); (H.-Y.S.)
- Cancer Research Institute, Seoul National University, Seoul 03080, Korea
- Wide River Institute of Immunology, Hongcheon 25159, Korea
| | - Hong-Yul An
- Department of Pediatrics, College of Medicine, Seoul National University, Seoul 03080, Korea; (B.-K.K.); (J.-Y.C.); (K.-T.H.); (H.-Y.A.); (H.-Y.S.)
- Cancer Research Institute, Seoul National University, Seoul 03080, Korea
- Wide River Institute of Immunology, Hongcheon 25159, Korea
| | - Hee-Young Shin
- Department of Pediatrics, College of Medicine, Seoul National University, Seoul 03080, Korea; (B.-K.K.); (J.-Y.C.); (K.-T.H.); (H.-Y.A.); (H.-Y.S.)
- Cancer Research Institute, Seoul National University, Seoul 03080, Korea
- Wide River Institute of Immunology, Hongcheon 25159, Korea
| | - Hyoung-Jin Kang
- Department of Pediatrics, College of Medicine, Seoul National University, Seoul 03080, Korea; (B.-K.K.); (J.-Y.C.); (K.-T.H.); (H.-Y.A.); (H.-Y.S.)
- Cancer Research Institute, Seoul National University, Seoul 03080, Korea
- Wide River Institute of Immunology, Hongcheon 25159, Korea
- Correspondence:
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Chatrath A, Kumar M, Prasad R. Comparative proteomics and variations in extracellular matrix of Candida tropicalis biofilm in response to citral. PROTOPLASMA 2022; 259:263-275. [PMID: 33959808 DOI: 10.1007/s00709-021-01658-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
Candida tropicalis is an opportunistic human pathogen with an ability to cause superficial as well as systemic infections in immunocompromised patients. The formation of biofilm by C. tropicalis can cause dreadful and persistent infections which are difficult to treat due to acquired resistance. Presently, available anti-Candida drugs exhibit a high frequency of resistance, low specificity and toxicity at a higher dosage. In addition, the discovery of natural or synthetic anti-Candida drugs is slow paced and often does not pass clinical trials. Citral, a monoterpene aldehyde, has shown effective antimicrobial activities against various microorganisms. However, only few studies have elaborated the action of citral against the biofilm of C. tropicalis. In the present work, the aim was to study the fungicidal effect, differential expression of proteome and changes in extracellular matrix in response to the sub-lethal concentration (16 µg/mL) of citral. The administration of citral on C. tropicalis biofilm leads to a fungicidal effect. Furthermore, the differential expression of proteome has revealed twenty-five proteins in C. tropicalis biofilm, which were differentially expressed in the presence of citral. Among these, amino acid biosynthesis (Met6p, Gln1p, Pha2p); nucleotide biosynthesis (Xpt1p); carbohydrate metabolism (Eno1p, Fba1p, Gpm1p); sterol biosynthesis (Mvd1p/Erg19p, Hem13p); energy metabolism (Dnm1p, Coa1p, Ndk1p, Atp2p, Atp4p, Hts1p); oxidative stress (Hda2p, Gre22p, Tsa1p, Pst2p, Sod2p) and biofilm-specific (Adh1p, Ape1p, Gsp1p) proteins were identified. The overexpression of oxidative stress-related proteins indicates the response of biofilm cell to combating oxidative stress during citral treatment. Moreover, the upregulation of Adh1p is of particular interest because it subsidizes the biofilm inhibition through ethanol production as a cellular response. The augmented expression of Mvd1p/Erg19p signifies the effect of citral on ergosterol biosynthesis. The presence of citral has also shown an increment in hexosamine and ergosterol component in extracellular matrix of C. tropicalis biofilm. Hence, it is indicated that the cellular response towards citral acts through multifactorial processes. This study will further help in the interpretation of the effect of citral on C. tropicalis biofilm and development of novel antifungal agents against these potential protein targets.
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Affiliation(s)
- Apurva Chatrath
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, Uttarakhand, India
| | - Manish Kumar
- Protein Structural & Molecular Dynamics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, Uttarakhand, India
| | - Ramasare Prasad
- Molecular Biology & Proteomics Laboratory, Department of Biotechnology, Indian Institute of Technology, Roorkee, 247667, Uttarakhand, India.
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5
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Evaluation and management of pleural sepsis. Respir Med 2021; 187:106553. [PMID: 34340174 DOI: 10.1016/j.rmed.2021.106553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/22/2021] [Accepted: 07/26/2021] [Indexed: 11/21/2022]
Abstract
Pleural sepsis stems from an infection within the pleural space typically from an underlying bacterial pneumonia leading to development of a parapneumonic effusion. This effusion is traditionally divided into uncomplicated, complicated, and empyema. Poor clinical outcomes and increased mortality can be associated with the development of parapneumonic effusions, reinforcing the importance of early recognition and diagnosis. Management necessitates a multimodal therapeutic strategy consisting of antimicrobials, catheter/tube thoracostomy, and at times, video-assisted thoracoscopic surgery.
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Wirth F, Ishida K. Antifungal drugs: An updated review of central nervous system pharmacokinetics. Mycoses 2020; 63:1047-1059. [PMID: 32772402 DOI: 10.1111/myc.13157] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/23/2020] [Accepted: 08/02/2020] [Indexed: 01/06/2023]
Abstract
Invasive fungal infections (IFIs) in the central nervous system (CNS) are particularly hard to treat and are associated with high morbidity and mortality rates. Four chemical classes of systemic antifungal agents are used for the treatment of IFIs (eg meningitis), including polyenes, triazoles, pyrimidine analogues and echinocandins. This review will address all of these classes and discuss their penetration and accumulation in the CNS. Treatment of fungal meningitis is based on the antifungal that shows good penetration and accumulation in the CNS. Pharmacokinetic data concerning the entry of antifungal agents into the intracranial compartments are faulty. This review will provide an overview of the ability of systemic antifungals to penetrate the CNS, based on previously published drug physicochemical properties and pharmacokinetic data, for evaluation of the most promising antifungal drugs for the treatment of fungal CNS infections. The studies selected and discussed in this review are from 1990 to 2019.
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Affiliation(s)
- Fernanda Wirth
- Laboratory of Antifungal Chemotherapy, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Kelly Ishida
- Laboratory of Antifungal Chemotherapy, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Almeida-Silva F, Gonçalves DDS, de Abreu Almeida M, Guimarães AJ. Current Aspects of Diagnosis and Therapeutics of Histoplasmosis and Future Trends: Moving onto a New Immune (Diagnosis and Therapeutic) Era? CURRENT CLINICAL MICROBIOLOGY REPORTS 2019. [DOI: 10.1007/s40588-019-00118-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Nithya M, Ragavendran C, Natarajan D. Antibacterial and free radical scavenging activity of a medicinal plant Solanum xanthocarpum. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2018. [DOI: 10.1080/10942912.2017.1409236] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- M. Nithya
- Natural Drug Research Laboratory, Department of Biotechnology, School of Biosciences, Periyar University, Salem, Tamil Nadu, India
| | - C. Ragavendran
- Natural Drug Research Laboratory, Department of Biotechnology, School of Biosciences, Periyar University, Salem, Tamil Nadu, India
| | - D. Natarajan
- Natural Drug Research Laboratory, Department of Biotechnology, School of Biosciences, Periyar University, Salem, Tamil Nadu, India
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Raghavendra KR, Renuka N, Kumar KA, Shashikanth S. An Accessible Route for the Synthesis of Novel Lignan Derivatives and Their Biological Evaluation. Pharm Chem J 2017. [DOI: 10.1007/s11094-017-1671-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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11
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Candida parapsilosis Endocarditis Presenting on Native Valve With Cerebrovascular Accident and Myocardial Infarction. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2015. [DOI: 10.1097/ipc.0000000000000292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Zhang HZ, Wei JJ, Vijaya Kumar K, Rasheed S, Zhou CH. Synthesis and biological evaluation of novel d-glucose-derived 1,2,3-triazoles as potential antibacterial and antifungal agents. Med Chem Res 2014. [DOI: 10.1007/s00044-014-1123-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Antimicrobial, antioxidant, cytotoxic and molecular docking properties of N-benzyl-2,2,2-trifluoroacetamide. APPLIED NANOSCIENCE 2014. [DOI: 10.1007/s13204-014-0307-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Synthesis and antifungal activity of ASP9726, a novel echinocandin with potent Aspergillus hyphal growth inhibition. Bioorg Med Chem Lett 2014; 24:1172-5. [PMID: 24468413 DOI: 10.1016/j.bmcl.2013.12.116] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 12/24/2013] [Accepted: 12/28/2013] [Indexed: 11/21/2022]
Abstract
The synthesis and antifungal activity of ASP9726, a novel echinocandin with potent Aspergillus hyphal growth inhibition and significantly improved MIC against Candida parapsilosis and echinocandin resistant-Candida is described.
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Zambuzzi-Carvalho PF, Tomazett PK, Santos SC, Ferri PH, Borges CL, Martins WS, de Almeida Soares CM, Pereira M. Transcriptional profile of Paracoccidioides induced by oenothein B, a potential antifungal agent from the Brazilian Cerrado plant Eugenia uniflora. BMC Microbiol 2013; 13:227. [PMID: 24119145 PMCID: PMC3852496 DOI: 10.1186/1471-2180-13-227] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 10/01/2013] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The compound oenothein B (OenB), which is isolated from the leaves of Eugenia uniflora, a Brazilian Cerrado plant, interferes with Paracoccidioides yeast cell morphology and inhibits 1,3-β-D-glucan synthase (PbFKS1) transcript accumulation, which is involved in cell wall synthesis. In this work we examined the gene expression changes in Paracoccidioides yeast cells following OenB treatment in order to investigate the adaptive cellular responses to drug stress. RESULTS We constructed differential gene expression libraries using Representational Difference Analysis (RDA) of Paracoccidioides yeast cells treated with OenB for 90 and 180 min. Treatment for 90 min resulted in the identification of 463 up-regulated expressed sequences tags (ESTs) and 104 down-regulated ESTs. For the 180 min treatment 301 up-regulated ESTs and 143 down-regulated were identified. Genes involved in the cell wall biosynthesis, such as GLN1, KRE6 and FKS1, were found to be regulated by OenB. Infection experiments in macrophages corroborated the in vitro results. Fluorescence microscopy showed increased levels of chitin in cells treated with OenB. The carbohydrate polymer content of the cell wall of the fungus was also evaluated, and the results corroborated with the transcriptional data. Several other genes, such as those involved in a variety of important cellular processes (i.e., membrane maintenance, stress and virulence) were found to be up-regulated in response to OenB treatment. CONCLUSIONS The exposure of Paracoccidioides to OenB resulted in a complex altered gene expression profile. Some of the changes may represent specific adaptive responses to this compound in this important pathogenic fungus.
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Affiliation(s)
- Patrícia Fernanda Zambuzzi-Carvalho
- Departamento de Bioquímica e Biologia Molecular, Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, ICBII, Campus II, Universidade Federal de Goiás, C.P. 131, 74001-970 Goiânia, GO, Brazil
| | - Patrícia Kott Tomazett
- Departamento de Bioquímica e Biologia Molecular, Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, ICBII, Campus II, Universidade Federal de Goiás, C.P. 131, 74001-970 Goiânia, GO, Brazil
| | - Suzana Costa Santos
- Laboratório de Bioatividade Molecular, Instituto de Química, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Pedro Henrique Ferri
- Laboratório de Bioatividade Molecular, Instituto de Química, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Clayton Luiz Borges
- Departamento de Bioquímica e Biologia Molecular, Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, ICBII, Campus II, Universidade Federal de Goiás, C.P. 131, 74001-970 Goiânia, GO, Brazil
| | | | - Célia Maria de Almeida Soares
- Departamento de Bioquímica e Biologia Molecular, Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, ICBII, Campus II, Universidade Federal de Goiás, C.P. 131, 74001-970 Goiânia, GO, Brazil
| | - Maristela Pereira
- Departamento de Bioquímica e Biologia Molecular, Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, ICBII, Campus II, Universidade Federal de Goiás, C.P. 131, 74001-970 Goiânia, GO, Brazil
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Uso actual de los antifúngicos triazoles en niños. INFECTIO 2012. [DOI: 10.1016/s0123-9392(12)70031-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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17
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Todd JR, King JW, Oberle A, Matsumoto T, Odaka Y, Fowler M, Pore RS, Shahan TA, Yin L, Sanusi ID. Protothecosis: report of a case with 20-year follow-up, and review of previously published cases. Med Mycol 2012; 50:673-89. [DOI: 10.3109/13693786.2012.677862] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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18
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Chai X, Yang G, Zhang J, Yu S, Zou Y, Wu Q, Zhang D, Jiang Y, Cao Y, Sun Q. Synthesis and Biological Evaluation of Triazole Derivatives as Potential Antifungal Agent. Chem Biol Drug Des 2012; 80:382-7. [DOI: 10.1111/j.1747-0285.2012.01398.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Fluoride enhances the activity of fungicides that destabilize cell membranes. Bioorg Med Chem Lett 2012; 22:3317-22. [PMID: 22460034 DOI: 10.1016/j.bmcl.2012.03.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 02/29/2012] [Accepted: 03/02/2012] [Indexed: 01/05/2023]
Abstract
Fluoride has long been known to inhibit bacterial and fungal cell growth most likely by blocking the functions of key metabolic enzymes. In this study, we demonstrate that antifungal compounds that disrupt cell membrane integrity exhibit improved ability to inhibit cell growth when used with millimolar concentrations of fluoride. Specifically, antifungal compounds of the polyene class and an antifungal peptide exhibit synergy with fluoride to inhibit the growth of various fungal species, including Candida albicans. Our results demonstrate that certain compounds can be found that increase the cellular uptake of fluoride, and provide new opportunities for creating antimicrobial compounds whose functions are enhanced when combined with otherwise sub-inhibitory concentrations of small ions.
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A facile synthesis of carbocycle-fused mono and bis-1,2,3-selenadiazoles and their antimicrobial and antimycobacterial studies. Eur J Med Chem 2011; 46:5465-72. [DOI: 10.1016/j.ejmech.2011.09.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 08/27/2011] [Accepted: 09/06/2011] [Indexed: 01/07/2023]
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21
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Shalini K, Kumar N, Drabu S, Sharma PK. Advances in synthetic approach to and antifungal activity of triazoles. Beilstein J Org Chem 2011; 7:668-77. [PMID: 21804864 PMCID: PMC3135122 DOI: 10.3762/bjoc.7.79] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 05/04/2011] [Indexed: 01/02/2023] Open
Abstract
Several five membered ring systems, e.g., triazole, oxadiazole dithiazole and thiadiazole with three heteroatoms at symmetrical or asymmetrical positions have been studied because of their interesting pharmacological properties. In this article our emphasis is on synthetic development and pharmacological activity of the triazole moiety which exhibit a broad spectrum of pharmacological activity such as antifungal, antibacterial, anti-inflammatory and anticancer etc. Triazoles have increased our ability to treat many fungal infections, for example, candidiasis, cryptococcal meningitis, aspergillosis etc. However, mortality due to these infections even with antifungal therapy is still unacceptably high. Therefore, the development of new antifungal agents targeting specific fungal structures or functions is being actively pursued. Rapid developments in molecular mycology have led to a concentrated search for more target antifungals. Although we are entering a new era of antifungal therapy in which we will continue to be challenged by systemic fungal diseases, the options for treatment will have greatly expanded.
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Affiliation(s)
- Kumari Shalini
- Department of Pharmaceutical Technology, Meerut Institute of Engineering & Technology, Meerut, U. P., India, Pin-250005
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Wan K, Zhou CH. Synthesis of Novel Halobenzyloxy and Alkoxy 1,2,4-Triazoles and Evaluation for Their Antifungal and Antibacterial Activities. B KOREAN CHEM SOC 2010. [DOI: 10.5012/bkcs.2010.31.7.2003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Nakamoto K, Tsukada I, Tanaka K, Matsukura M, Haneda T, Inoue S, Murai N, Abe S, Ueda N, Miyazaki M, Watanabe N, Asada M, Yoshimatsu K, Hata K. Synthesis and evaluation of novel antifungal agents-quinoline and pyridine amide derivatives. Bioorg Med Chem Lett 2010; 20:4624-6. [PMID: 20573507 DOI: 10.1016/j.bmcl.2010.06.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Revised: 05/28/2010] [Accepted: 06/01/2010] [Indexed: 10/19/2022]
Abstract
Quinoline amide, azaindole amide and pyridine amides were synthesized and tested for in vitro antifungal activity against fungi. These synthesized amides have potent antifungal activity against Candida albicans and Aspergillus fumigatus. Our results suggest that hetero ring amides may be potent antifungal agents that operate by inhibiting the function of Gwt1 protein in the GPI biosynthetic pathway.
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Affiliation(s)
- Kazutaka Nakamoto
- Discovery Research Laboratories, Eisai Co., Ltd, Tsukuba-shi, Ibaraki 300-2635, Japan.
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Wang JL, Chang CH, Young-Xu Y, Chan KA. Systematic review and meta-analysis of the tolerability and hepatotoxicity of antifungals in empirical and definitive therapy for invasive fungal infection. Antimicrob Agents Chemother 2010; 54:2409-19. [PMID: 20308378 PMCID: PMC2876415 DOI: 10.1128/aac.01657-09] [Citation(s) in RCA: 131] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2009] [Revised: 12/29/2009] [Accepted: 03/10/2010] [Indexed: 01/13/2023] Open
Abstract
To evaluate the tolerability and liver safety profiles of the systemic antifungal agents commonly used for the treatment of invasive fungal infection, we conducted a systematic review and meta-analysis of randomized controlled trials published before 31 August 2009. Two reviewers independently applied selection criteria, performed quality assessment, and extracted data. We used the beta-binomial model to account for variation across studies and the maximum likelihood method to estimate the pooled risks. We identified 39 studies with more than 8,000 enrolled patients for planned comparisons. The incidence rates of treatment discontinuation due to adverse reactions and liver injury associated with antifungal therapy ranged widely. The pooled risks of treatment discontinuation due to adverse reactions were above 10% for amphotericin B formulations and itraconazole, whereas they were 2.5% to 3.8% for fluconazole, caspofungin, and micafungin. We found that 1.5% of the patients stopped itraconazole treatment due to hepatotoxicity. Furthermore, 19.7% of voriconazole users and 17.4% of itraconazole users had elevated serum liver enzyme levels, although they did not require treatment discontinuation, whereas 2.0% or 9.3% of fluconazole and echinocandin users had elevated serum liver enzyme levels but did not require treatment discontinuation. The results were similar when we stratified the data by empirical or definitive antifungal therapy. Possible explanations for antifungal agent-related hepatotoxicity were confounded by antifungal prescription to patients with a high risk of liver injury, the increased chance of detection of hepatotoxicity due to prolonged treatment, or the pharmacological entity.
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Affiliation(s)
- Jiun-Ling Wang
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, Institute of Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan, EpiPatterns, Haverhill, New Hampshire, Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
| | - Chia-Hsuin Chang
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, Institute of Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan, EpiPatterns, Haverhill, New Hampshire, Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
| | - Yinong Young-Xu
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, Institute of Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan, EpiPatterns, Haverhill, New Hampshire, Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
| | - K. Arnold Chan
- Department of Internal Medicine, E-Da Hospital/I-Shou University, Kaohsiung, Taiwan, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan, Institute of Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan, EpiPatterns, Haverhill, New Hampshire, Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts
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Marino E, Gallagher JC. Prophylactic Antifungal Agents Used After Lung Transplantation. Ann Pharmacother 2010; 44:546-56. [DOI: 10.1345/aph.1m377] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Objective: To review the data supporting available antifungal agents and compare regimens utilized to prevent fungal infection in lung transplant recipients. Data Sources: Literature retrieval was accessed through MEDLINE (1950 through October 2009) and United Network for Organ Sharing online database (available data through October 2009), using the terms lung transplantation, prophylaxis, and fungal infection. In addition, reference citations from publications identified were reviewed. Study Selection And Data Extraction: All articles or related abstracts in English identified from the data sources above were evaluated. Literature including adult lung transplant recipients who received systemic antifungal prophylaxis to prevent invasive fungal infections (IFIs) was included in the review. Data Synthesis: IFIs after lung transplantation remain a common postoperative problem and are associated with high mortality. The lung is the most vulnerable solid organ to be transplanted, as it is the main organ responsible for gas exchange and therefore the high risk for pulmonary-related IFIs. It is most susceptible to developing an IFI, as it serves as a medium for organisms traveling from air to human tissue, potentially causing life-threatening infections. Such infections typically involve Candida and Aspergillus spp. and tend to occur within the first 12 months after transplant. Although there has been an increase in lung transplants performed over the past decade, no standard antifungal prophylactic regimen exists. Literature describing antifungals used to prevent IFI after transplant is scarce, which may be due to a lack of consistency in regimens used between transplant centers. Several regimens have been described utilizing different antifungal agents as both monotherapy and combination therapy. The majority of the literature reviewed here describes aerosolized amphotericin B formulations and azole antifungals demonstrating an overall decreased risk of fungal infection after lung transplantation. It has become the standard of practice to initiate some form of antifungal prophylaxis in these patients. Conclusions: The risk of fungal infection after lung transplant is multifactorial and optimal prophylactic regimens should include agents with adequate activity against the most pathogenic fungi.
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Affiliation(s)
| | - Jason C Gallagher
- Clinical Specialist, Infectious Diseases, Department of Pharmacy Practice, School of Pharmacy, Temple University, Philadelphia, PA
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Hanadate T, Tomishima M, Shiraishi N, Tanabe D, Morikawa H, Barrett D, Matsumoto S, Ohtomo K, Maki K. FR290581, a novel sordarin derivative: synthesis and antifungal activity. Bioorg Med Chem Lett 2009; 19:1465-8. [PMID: 19196509 DOI: 10.1016/j.bmcl.2009.01.051] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Revised: 12/17/2008] [Accepted: 01/09/2009] [Indexed: 10/21/2022]
Abstract
Sordarin is a unique natural product antifungal agent that is an inhibitor of elongation factor 2. To improve biological activity, we synthesized various compounds by novel modification of the aglycone, sordaricin. As a result, we have discovered the novel sordarin derivative FR290581. This compound exhibited superior activity and a good pharmacokinetic profile, and also displayed good in vivo activity against Candida albicans.
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Affiliation(s)
- Tadaatsu Hanadate
- Chemistry Research Labs., Astellas Pharma Inc., 2-1-6 Kashima, Yodogawa-ku, Osaka 532-8514, Japan
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Mata-Essayag S, Colella MT, Roselló A, de Capriles CH, Landaeta ME, de Salazar CP, Magaldi S, Olaizola C, Calatroni MI, Garrido L. Histoplasmosis: a study of 158 cases in Venezuela, 2000-2005. Medicine (Baltimore) 2008; 87:193-202. [PMID: 18626302 DOI: 10.1097/md.0b013e31817fa2a8] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Histoplasmosis, a granulomatous disease caused by Histoplasma capsulatum, is endemic in Venezuela. We conducted the current study to appraise retrospectively the demographic data, clinical features, diagnostic methods, and treatment of patients with histoplasmosis from January 2000 to December 2005. We reviewed the medical records of outpatient cases with a diagnosis of histoplasmosis and considered clinical samples processed at our laboratory. We collected demographic, epidemiologic, and clinical data from each case as available, including results of any mycologic examinations performed. Treatment and outcome data were available for some patients. We assessed 158 cases of histoplasmosis: 103 (65.2%) patients came from the Caracas metropolitan area; 53 were associated with acquired immunodeficiency syndrome (AIDS), 14 with tuberculosis, and 8 with paracoccidioidomycosis. Six pediatric patients were malnourished. Epidemiologic data suggested histoplasmosis in most cases. Patients received treatment with itraconazole and/or amphotericin B. Our results may reflect changes in the epidemiology occurring in Venezuela, perhaps due to environmental changes and the presence of AIDS. Several mycologic exams are necessary to ensure a proper diagnosis. More reliable data and statistics on this infection are necessary to monitor outbreaks closely and to establish if there is an epidemic pattern.
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Affiliation(s)
- Sofía Mata-Essayag
- From Sección de Micología Médica "Dr. Dante Borelli" (SM-E, MTC, AR, CHdC, CPdS, SM), Instituto de Medicina Tropical; Cátedra de Microbiología (MEL), Escuela de Medicina Luis Razetti, Facultad de Medicina; Cátedra de Medicina Tropical (CO), Escuela de Medicina Luis Razetti; Servicio de Medicina II, Hospital Universitario de Caracas (MIC), Universidad Central de Venezuela (UCV), Caracas; and Complejo Hospitalario "José Ignacio Baldó" (LG), Caracas, Venezuela
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Tomishima M, Ohki H, Yamada A, Maki K, Ikeda F. Novel echinocandin antifungals. Part 2: Optimization of the side chain of the natural product FR901379. Discovery of micafungin. Bioorg Med Chem Lett 2008; 18:2886-90. [DOI: 10.1016/j.bmcl.2008.03.093] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2008] [Revised: 03/25/2008] [Accepted: 03/29/2008] [Indexed: 11/17/2022]
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Tomishima M, Ohki H, Yamada A, Maki K, Ikeda F. Novel echinocandin antifungals. Part 1: Novel side-chain analogs of the natural product FR901379. Bioorg Med Chem Lett 2008; 18:1474-7. [DOI: 10.1016/j.bmcl.2007.12.062] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2007] [Revised: 12/20/2007] [Accepted: 12/22/2007] [Indexed: 11/26/2022]
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Garzoni C, Nobre VA, Garbino J. Candida parapsilosis endocarditis: a comparative review of the literature. Eur J Clin Microbiol Infect Dis 2007; 26:915-26. [PMID: 17805589 DOI: 10.1007/s10096-007-0386-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Fungal endocarditis (FE) is an uncommon disease, and while accounting for only 1.3-6% of all cases of infectious endocarditis, it carries a high mortality risk. Although Candida albicans represents the main etiology of FE, C. parapsilosis is the most common non-albicans species. We report the case of a 32-year-old man with a history of prior intravenous drug (IVD) use hospitalized with endocarditis due to C. parapsilosis and review all 71 additional cases documented in the literature. A retrospective analysis of the 72 C. parapsilosis cases compared to 52 recently reviewed cases of C. albicans endocarditis was conducted to identify organism-specific clinical peculiarities. The most common predisposing factor for C. parapsilosis endocarditis (41/72; 57.4%) involved prosthetic valves followed by IVD use (12/72; 20%). Peripheral embolic and/or hemorrhagic events occurred in 28/64 (43.8%) patients, mostly in cerebral and lower limb territories. Overall mortality was 41.7%. Combined surgical and clinical treatment was associated with a lower mortality. Few patients received the newer antifungal agents, and it would appear that more experience is required for their use in the treatment of C. parapsilosis endocarditis.
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Affiliation(s)
- C Garzoni
- Division of Infectious Diseases, University Hospitals of Geneva, 24 Rue Micheli-du-Crest, Geneva 14, Switzerland.
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Abstract
PURPOSE OF REVIEW To describe and bring together recent development in the diagnosis and treatment of both community-acquired and opportunistic fungal infections in the intensive care unit. RECENT FINDINGS The past few years have brought major advances to both the diagnosis and treatment of fungal infections. The development of newer therapeutic modalities to supplement existing treatment options includes a new class of antifungal agents, the echinocandins. Newer and improved agents of the azole class have arrived as well as better delineation for the role of liposomal amphotericins. Newer, nonculture-based diagnostic tests have allowed earlier, more timely diagnosis of opportunistic fungal infections, allowing more rapid initiation of therapy. SUMMARY Improved diagnostic tests and newer antifungal agents have been introduced, leading to earlier diagnosis and treatment.
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Affiliation(s)
- George A Sarosi
- Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.
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Tarcha EJ, Basrur V, Hung CY, Gardner MJ, Cole GT. Multivalent recombinant protein vaccine against coccidioidomycosis. Infect Immun 2006; 74:5802-13. [PMID: 16988258 PMCID: PMC1594896 DOI: 10.1128/iai.00961-06] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2006] [Revised: 07/01/2006] [Accepted: 07/15/2006] [Indexed: 11/20/2022] Open
Abstract
Coccidioidomycosis is a human respiratory disease that is endemic to the southwestern United States and is caused by inhalation of the spores of a desert soilborne fungus. Efforts to develop a vaccine against this disease have focused on identification of T-cell-reactive antigens derived from the parasitic cell wall which can stimulate protective immunity against Coccidioides posadasii infection in mice. We previously described a productive immunoproteomic/bioinformatic approach to the discovery of vaccine candidates which makes use of the translated genome of C. posadasii and a computer-based method of scanning deduced sequences of seroreactive proteins for epitopes that are predicted to bind to human major histocompatibility (MHC) class II-restricted molecules. In this study we identified a set of putative cell wall proteins predicted to contain multiple, promiscuous MHC II binding epitopes. Three of these were expressed by Escherichia coli, combined in a vaccine, and tested for protective efficacy in C57BL/6 mice. Approximately 90% of the mice survived beyond 90 days after intranasal challenge, and the majority cleared the pathogen. We suggest that the multicomponent vaccine stimulates a broader range of T-cell clones than the single recombinant protein vaccines and thereby may be capable of inducing protection in an immunologically heterogeneous human population.
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Affiliation(s)
- Eric J Tarcha
- Department of Medical Microbiology and Immunology, Medical University of Ohio, Toledo, Ohio 43614, USA
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