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NOJO H, ISHIJIMA SA, MORIKAWA M, ITO T, KANO R. In vitro susceptibility testing of phytochemicals from essential oils against Prototheca species. J Vet Med Sci 2024; 86:847-849. [PMID: 38925982 PMCID: PMC11300124 DOI: 10.1292/jvms.24-0032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Phytochemicals isolated from essential oils are effective alternatives for inhibiting microbial pathogens. Bovine protothecal mastitis is the cause of a reduction in milk production and the secretion of thin, watery milk with white flakes. In the present study, we performed in vitro susceptibility testing of the phytochemicals carvacrol, citral, and thymol in Prototheca strains isolated from cases of protothecosis in small animals and cow feces. The susceptibility of the algae to carvacrol, citral, and thymol was assessed using the modified CLSI M27-A3 broth microdilution method. The ranges of the minimum inhibitory concentrations (MIC%) of the phytochemicals in all isolates were 0.03% to 0.125% for carvacrol, 0.03% to 0.25% for citral, and 0.06% to 0.25% for thymol. Based on these results, carvacrol, citral, and thymol appear effective against Prototheca species at the tested concentrations, and may thus be useful for environmental disinfection in barns.
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Affiliation(s)
- Honoka NOJO
- Teikyo University Institute of Medical Mycology (TIMM),
Tokyo, Japan
| | - Sanae A ISHIJIMA
- Teikyo University Institute of Medical Mycology (TIMM),
Tokyo, Japan
| | - Mako MORIKAWA
- Veterinary Hospital Aichi P.F.A.M.A.A., Aichi, Japan
| | - Takaaki ITO
- Veterinary Hospital Aichi P.F.A.M.A.A., Aichi, Japan
| | - Rui KANO
- Teikyo University Institute of Medical Mycology (TIMM),
Tokyo, Japan
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2
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Yeoh K, Lass-Flörl C, Lamoth F, Slavin MA, Williams E, Neofytos D. Clinicopathologic conference: Bloodstream infection in an allogeneic hamatopoietic cell transplant: Thinking beyond the usual. Transpl Infect Dis 2024; 26:e14273. [PMID: 38695847 DOI: 10.1111/tid.14273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Accepted: 03/13/2024] [Indexed: 08/11/2024]
Abstract
This case involves a 53-year-old female with concurrent acute myeloid leukemia (AML) and multiple myeloma. She underwent cytarabine and daunorubicin (7+3) induction chemotherapy followed by cytarabine (HiDAC) consolidation, with an early AML relapse requiring azacitidine and venetoclax therapy. She achieved complete remission and incomplete count recovery. Following fludarabine, melphalan, and thymoglobulin induction chemotherapy, she underwent an allogeneic stem cell transplant with failure to engraft, requiring autologous stem cell rescue, buffy coat, and granulocyte transfusions, eventually presenting with a diffuse skin rash consistent with Steven-Johnson syndrome and toxic epidermal necrolysis, persistent neutropenic fevers and positive blood cultures.
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Affiliation(s)
- Kim Yeoh
- Department of Microbiology, The Royal Melbourne Hospital, Melbourne, Australia
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Cornelia Lass-Flörl
- Department of Hygiene, Microbiology and Social Medicine, Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Frédéric Lamoth
- Department of Medicine, Service of Infectious Diseases, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
- Department of Laboratory Medicine and Pathology, Institute of Microbiology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Monica A Slavin
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
- Department of Infectious Diseases, and National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Australia
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Australia
- Victorian Infectious Diseases Service, Royal Melbourne Hospital, Melbourne, Australia
| | - Eloise Williams
- Department of Microbiology, The Royal Melbourne Hospital, Melbourne, Australia
- Department of Infectious Diseases, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
| | - Dionysios Neofytos
- Division of Infectious Diseases, University Hospital of Geneva, Geneva, Switzerland
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3
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Jabłońska W, Gołębiewski M, Kot M, Mardan H, Pawliński B, Kalińska A. Perspectives and Possibilities for New Antimicrobial Agents in the Treatment and Control of Mastitis Induced by Algae of the Genus Prototheca spp.: A Review. Int J Mol Sci 2024; 25:8219. [PMID: 39125795 PMCID: PMC11311760 DOI: 10.3390/ijms25158219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/24/2024] [Accepted: 07/25/2024] [Indexed: 08/12/2024] Open
Abstract
Innovative approaches in nanotechnology provide a potentially promising alternative to untreatable cases of mastitis caused by genus Prototheca spp. algae infections. Drying of the teats of the affected animals or culling are typically the outcomes of mastitis in dairy cattle caused by these pathogens. A major issue in both veterinary medicine and animal breeding is the Prototheca species' widespread resistance to the current methods of managing infections and the available drugs, including antibiotics. Commercial antifungal preparations are also ineffective. Nanotechnology, an emerging discipline, has the potential to create an effective alternative treatment for protothecal mastitis. The aim of the paper is to combine the literature data on the use of nanotechnology in the control of mastitis, taking into account data on combating mastitis caused by Prototheca spp. infections. The databases employed were PubMed, Google Scholar, and Scopus, focusing on literature from the last 20 years to ensure relevance and currency. Studies conducted in vitro have demonstrated that nanomaterials have significant biocidal activity against mastitis infections of different etiologies. Analyzed research papers show that (NPs), such as AgNPs, CuNPs, AuNPs, etc., may not negatively impact various cell lines and may be effective agents in reducing the pathogens' viability. However, it is also critical to assess the risks involved in using nanomaterials.
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Affiliation(s)
- Weronika Jabłońska
- Department of Animal Breeding, Institute of Animal Sciences, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Marcin Gołębiewski
- Department of Animal Breeding, Institute of Animal Sciences, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Magdalena Kot
- Department of Animal Breeding, Institute of Animal Sciences, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Henadzi Mardan
- Department of Animal Breeding, Institute of Animal Sciences, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Bartosz Pawliński
- Department of Large Animal Diseases and Clinic, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
| | - Aleksandra Kalińska
- Department of Animal Breeding, Institute of Animal Sciences, Warsaw University of Life Sciences, 02-787 Warsaw, Poland
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4
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Rivelli Zea SM, Itoh M, Toyotome T. Development of Loop-Mediated Isothermal Amplification for the Detection of Prototheca bovis Directly from Milk Samples of Dairy Cattle. Mycopathologia 2024; 189:1. [PMID: 38217777 DOI: 10.1007/s11046-023-00806-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 10/12/2023] [Indexed: 01/15/2024]
Abstract
Prototheca bovis is an algal emerging pathogen in dairy farms causing refractory protothecal mastitis with increasing incidence worldwide and significant economic impact. P. bovis infects cows throughout the lactation cycle, including dry periods, and can persist in the udder and the environment for a long time. Since P. bovis does not respond to treatments with antibiotics, the suggested sanitary measure to restrict the spread is culling infected animals. A point-of-care test for early detection of the causative agent is critically needed to guide farm management and the appropriate treatment of mastitis. Loop-mediated isothermal amplification (LAMP) is a highly specific molecular method, time-saving, cost-effective and easy to perform in limited settings. This study aimed to develop a LAMP assay for P. bovis detection directly from milk samples; it was employed in conjunction with a commercial DNA extraction kit which was previously used to extract DNA from milk specimens containing microbes. The LAMP assay detected P. bovis DNA within 1 h in milk samples spiked with P. bovis at a concentration of 50 cells/μL, enabling on-farm disease monitoring and decision-making based on a reliable diagnosis. The LAMP method will contribute to the accurate and rapid identification of P. bovis in asymptomatic or recurrent mastitis cases and consequently aid the implementation of targeted control measures and the reduction of losses in milk production.
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Affiliation(s)
- Sofia M Rivelli Zea
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan
| | - Megumi Itoh
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan
| | - Takahito Toyotome
- Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan.
- Diagnostic Center for Animal Health and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan.
- Medical Mycology Research Center, Chiba University, Chiba, Japan.
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5
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Lanave G, Pellegrini F, Palermo G, Zini E, Mercuriali E, Zagarella P, Bányai K, Camero M, Martella V. Identification of Prototheca from the Cerebrospinal Fluid of a Cat with Neurological Signs. Vet Sci 2023; 10:681. [PMID: 38133232 PMCID: PMC10747436 DOI: 10.3390/vetsci10120681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/10/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023] Open
Abstract
Prototheca infections are rare in cats, and they are usually associated with cutaneous or subcutaneous infections by P. wickerhamii, with no evidence of neurological signs or systemic disease. In this study, we report the identification of prototheca in the cerebrospinal fluid (CSF) of a cat with neurological symptoms. Fourteen CSF samples were gathered from cats presented with neurological disease between 2012 and 2014. The inclusion criteria for the samples were an increase in CSF protein and cell number (pleocytosis), suggestive of an infectious inflammatory status of the central nervous system (CNS). Nine samples fulfilled the inclusion criteria (inflammatory samples), while five samples, used as control, did not (non-inflammatory samples). All the samples were screened molecularly for different pathogens associated with CNS disease in cats, including prototheca. Out of 14 CSF samples, only one inflammatory sample tested positive for prototheca. Upon sequence and phylogenetic analysis of the amplicon, the strain was characterized as P. bovis. This report is the first documented evidence of prototheca in the cerebrospinal fluid of a cat with neurological signs. Prototheca should be considered in the diagnostics procedures on the CNS of cats presented with infectious diseases.
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Affiliation(s)
- Gianvito Lanave
- Department of Veterinary Medicine, University of Bari Aldo Moro, Valenzano, 70010 Bari, Italy; (G.L.); (F.P.); (V.M.)
| | - Francesco Pellegrini
- Department of Veterinary Medicine, University of Bari Aldo Moro, Valenzano, 70010 Bari, Italy; (G.L.); (F.P.); (V.M.)
| | - Giuseppe Palermo
- Veterinary Orthopaedic Traumatologic Centre of Arenzano, Arenzano, 16011 Genova, Italy; (G.P.); (E.M.); (P.Z.)
| | - Eric Zini
- Veterinary Institute of Novara, Granozzo con Monticello, 20060 Novara, Italy;
- Department of Animal Medicine, Production and Health, University of Padova, 35020 Legnaro, Italy
- Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, CH-8057 Zurich, Switzerland
| | - Edy Mercuriali
- Veterinary Orthopaedic Traumatologic Centre of Arenzano, Arenzano, 16011 Genova, Italy; (G.P.); (E.M.); (P.Z.)
- Veterinary Institute of Novara, Granozzo con Monticello, 20060 Novara, Italy;
| | - Paolo Zagarella
- Veterinary Orthopaedic Traumatologic Centre of Arenzano, Arenzano, 16011 Genova, Italy; (G.P.); (E.M.); (P.Z.)
| | - Krisztián Bányai
- Veterinary Medical Research Institute, Hungarian Academy of Sciences, H-1143 Budapest, Hungary;
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, H-1078 Budapest, Hungary
| | - Michele Camero
- Department of Veterinary Medicine, University of Bari Aldo Moro, Valenzano, 70010 Bari, Italy; (G.L.); (F.P.); (V.M.)
| | - Vito Martella
- Department of Veterinary Medicine, University of Bari Aldo Moro, Valenzano, 70010 Bari, Italy; (G.L.); (F.P.); (V.M.)
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Haider MJA, Shave CD, Onyishi CU, Jagielski T, Lara-Reyna S, Frickel EM, May RC. Species- and strain-specific differences in the phagocytosis of Prototheca: insights from live-cell imaging. Infect Immun 2023; 91:e0006623. [PMID: 37594276 PMCID: PMC10501220 DOI: 10.1128/iai.00066-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 07/07/2023] [Indexed: 08/19/2023] Open
Abstract
The genus Prototheca is an extremely unusual group of achlorophyllic, obligately heterotrophic algae. Six species have been identified as pathogens of vertebrates, including cattle and humans. In cattle, P. bovis is the main infectious pathogen and is associated with bovine mastitis. In contrast, human infections typically involve P. wickerhamii and are associated with a spectrum of varying clinical presentations. Prototheca spp. enter the host from the environment and are therefore likely to be initially recognized by cells of the innate immune system. However, little is known about the nature of the interaction between Prototheca spp. and host phagocytes. In the present study, we adopt a live-cell imaging approach to investigate these interactions over time. Using environmental and clinical strains, we show that P. bovis cells are readily internalized and processed by macrophages, whereas these immune cells struggle to internalize P. wickerhamii. Serum opsonization of P. wickerhamii only marginally improves phagocytosis, suggesting that this species (but not P. bovis) may have evolved mechanisms to evade phagocytosis. Furthermore, we show that inhibition of the kinases Syk or PI3K, which are both critical for innate immune signaling, drastically reduces the uptake of P. bovis. Finally, we show that genetic ablation of MyD88, a signaling adaptor critical for Toll-like receptor signaling, has little impact on uptake but significantly prolongs phagosome maturation once P. bovis is internalized. Together, our data suggest that these two pathogenic Prototheca spp. have very different host-pathogen interactions which have potential therapeutic implications for the treatment of human and animal disease.
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Affiliation(s)
- Mohammed J. A. Haider
- Institute of Microbiology and Infection, School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Christopher D. Shave
- Institute of Microbiology and Infection, School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Chinaemerem U. Onyishi
- Institute of Microbiology and Infection, School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Tomasz Jagielski
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I. Miecznikowa, Warszawa, Poland
| | - Samuel Lara-Reyna
- Institute of Microbiology and Infection, School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Eva-Maria Frickel
- Institute of Microbiology and Infection, School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Robin C. May
- Institute of Microbiology and Infection, School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
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Di Prinzio A, Ruf M, Torre AC, Duran Daza SV, Volonteri VI, Flores V, Mazzuoccuolo LD. Cutaneous protothecosis in a solid organ transplanted patient. An Bras Dermatol 2023; 98:723-725. [PMID: 37120408 PMCID: PMC10404499 DOI: 10.1016/j.abd.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/28/2022] [Accepted: 10/07/2022] [Indexed: 05/01/2023] Open
Affiliation(s)
| | - Marina Ruf
- Italian Hospital of Buenos Aires, CABA, Argentina
| | - Ana C Torre
- Italian Hospital of Buenos Aires, CABA, Argentina
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8
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Human protothecosis: A case report in northeastern Brazil. Med Mycol Case Rep 2023; 40:1-4. [PMID: 36851995 PMCID: PMC9958387 DOI: 10.1016/j.mmcr.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/13/2023] [Accepted: 02/13/2023] [Indexed: 02/16/2023] Open
Abstract
We describe a case of extensive human cutaneous protothecosis in the northeastern of Brazil. The diagnosis was made through histopathological examination of skin samples and culturing on Sabouraud dextrose agar, with identification through mass spectrometry. Treatment with itraconazole failed and was switched to liposomal amphotericin followed by voriconazole with clinical cure. Prothotecosis should be a diagnostic hypothesis when there are skin lesions after trauma, specially in situations of atypical evolution.
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9
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Guo J, Chen J, Li T, Gao L, Jiang C, Wu W. Integration of transcriptomics, proteomics, and metabolomics data for the detection of the human pathogenic Prototheca wickerhamii from a One Health perspective. Front Cell Infect Microbiol 2023; 13:1152198. [PMID: 37216181 PMCID: PMC10196235 DOI: 10.3389/fcimb.2023.1152198] [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: 01/27/2023] [Accepted: 03/31/2023] [Indexed: 05/24/2023] Open
Abstract
Prototheca species are the only microalgae known to cause opportunistic infections in vertebrates and humans. Most cases of protothecosis in humans are caused by Prototheca wickerhamii, but knowledge of the pathogenicity and biology of Prototheca is limited. Globally, the diagnostic rate of Prototheca species infection is much lower than the actual rate of P. wickerhamii. The precise mechanisms underlying the pathogenesis of Prototheca infections remain unclear. In this study, we identified a strain of P. wickerhamii with atypical colony morphology. To reveal the morphological differences between P. wickerhamii S1 (mucous) and the molecular basis of its pathogenicity, the transcriptomics, proteomics, and metabolomics of two pathogenic P. wickerhamii strains and one environmental strain were analysed. Interestingly, mannan endo-1,4-β-mannosidase was significantly downregulated in P. wickerhamii S1, which contributes to a thinner cell wall in S1 compared to strains with typical colony morphology, and the toxicity of macrophages is reduced. Metabolite analysis revealed that the mucoid appearance of P. wickerhamii S1 may have been caused by an increase in linoleic acid, glycerol, and other metabolites. There is still a need to better understand the ecology, aetiology, and pathogenesis of P. wickerhamii, and in particular, its transmission between humans, animals, and the environment, from a One Health perspective.
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Affiliation(s)
- Jian Guo
- Department of Laboratory Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Juan Chen
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Orthopaedic Department of Tongji Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Teng Li
- Department of Laboratory Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Lei Gao
- Microscopy Core Facility, Biomedical Research Core Facilities, Westlake University, Hangzhou, Zhejiang, China
| | - Cizhong Jiang
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Orthopaedic Department of Tongji Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Wenjuan Wu
- Department of Laboratory Medicine, Shanghai East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
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Proskurnicka A, Żupnik K, Bakuła Z, Iskra M, Rösler U, Jagielski T. Drug Susceptibility Profiling of Prototheca Species Isolated from Cases of Human Protothecosis. Antimicrob Agents Chemother 2023; 67:e0162722. [PMID: 36943065 PMCID: PMC10112244 DOI: 10.1128/aac.01627-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023] Open
Abstract
Prototheca are unicellular, achlorophyllous, yeast-like microalgae that occur in a wide range of natural habitats. At least five species have been implicated as the causative agents of opportunistic infections of men. Human protothecosis typically manifests as cutaneous, articular, or systemic disease. Treatment is largely empirical with poorly predictable and often unsuccessful outcomes. This is largely due to the frequently observed resistance of Prototheca species to conventional antimicrobial agents. This work is the first to perform drug susceptibility profiling exclusively on isolates from human cases of protothecosis. A total of 23 such isolates were tested against amphotericin B and 9 azoles, including efinaconazole and luliconazole, whose activities against Prototheca have never been studied before. Efinaconazole was the most active, with median minimum inhibitory concentration (MIC) and minimum algicidal concentration (MAC) values of 0.031 mg/L and 0.063 mg/L, respectively. Fluconazole and luliconazole had the lowest activity, with median MIC and MAC values of 128 mg/L. To conclude, amphotericin B and most of the azoles showed in vitro activity, with an algicidal rather than algistatic effect, against Prototheca. Still, the activity of individual drugs differed significantly between the species and even between strains of the same species. These differences can be attributed to a species-specific potential for acquiring drug resistance, which, in turn, might be linked to the treatment history of the patient from whom the strain was recovered. The results of this study underscore the potential clinical utility of efinaconazole as a promising therapeutic agent for the treatment of human protothecosis.
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Affiliation(s)
- Angelika Proskurnicka
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Kinga Żupnik
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Zofia Bakuła
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Mateusz Iskra
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Uwe Rösler
- Institute for Animal Hygiene and Environmental Health, Freie Universität Berlin, Berlin, Germany
| | - Tomasz Jagielski
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, Warsaw, Poland
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11
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Ely VL, Felipetto Cargnelutti J, Segabinazzi Ries A, Gressler LT, Costa S, Braz PH, Pötter L, Matiuzzi da Costa M, Gomes da Silva Júnior F, Pequeno de Oliveira H, Sangioni LA, Brayer Pereira DI, de Avila Botton S. Prototheca bovis in goats: Experimental mastitis and treatment with polypyrrole. Microb Pathog 2023; 174:105950. [PMID: 36528325 DOI: 10.1016/j.micpath.2022.105950] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
Prototheca bovis has been associated with several cases of mastitis in cattle but no record of intramammary infections has been reported in goats. This infection does not respond to available treatments and the disposal recommendation of affected animals cause great damage to the dairy industry. Alternatives for dealing with infections caused by Prototheca spp. are required worldwide. In vitro results suggest polypyrrole as promising molecule for combating this alga, because an algaecide effect was observed on tested Prototheca spp. isolates. Thus, this study evaluated goats as an experimental model for intramammary infection by P. bovis and a protocol for treating these animals with an intramammary polypyrrole solution. The possibility of P. bovis promoting an intramammary infection in goats was experimentally proven, demonstrating this species as an important model for studies involving algae mastitis. Furthermore, polypyrrole reduced the counts of Prototheca sp. in the analyzed samples, showing potential to fight this microorganism also in vivo. The results obtained in this study demonstrate the ability of P. bovis to colonize breast tissue in lactating goats and the highly soluble molecule of polypyrrole has potential use for the treatment of protothecosis.
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Affiliation(s)
- Valessa Lunkes Ely
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Juliana Felipetto Cargnelutti
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Ananda Segabinazzi Ries
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Letícia Trevisan Gressler
- Instituto Federal Farroupilha, Campus Frederico Westphalen, Linha 7 de Setembro, BR 386 - KM 40 s/n, Frederico Westphalen, RS, 98400-000, Brazil
| | - Samay Costa
- Instituto Federal Farroupilha, Campus Frederico Westphalen, Linha 7 de Setembro, BR 386 - KM 40 s/n, Frederico Westphalen, RS, 98400-000, Brazil
| | - Paulo Henrique Braz
- Instituto Federal Farroupilha, Campus Frederico Westphalen, Linha 7 de Setembro, BR 386 - KM 40 s/n, Frederico Westphalen, RS, 98400-000, Brazil
| | - Luciana Pötter
- Programa de Pós-graduação em Zootecnia, Departamento de Zootecnia, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Mateus Matiuzzi da Costa
- Universidade Federal do Vale do São Francisco, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/nº, Petrolina, CEP 56300-990, Brazil
| | - Fernando Gomes da Silva Júnior
- Universidade Federal do Vale do São Francisco, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/nº, Petrolina, CEP 56300-990, Brazil
| | - Helinando Pequeno de Oliveira
- Universidade Federal do Vale do São Francisco, Rodovia BR 407 - Km 12, Lote 543, Projeto Irrigação Senador Nilo Coelho s/nº, Petrolina, CEP 56300-990, Brazil
| | - Luis Antonio Sangioni
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil
| | - Daniela Isabel Brayer Pereira
- Universidade Federal de Pelotas (UFPel), Instituto de Biologia, Campus Capão do Leão s/n, Capão do Leão, RS, 96160-000, Brazil
| | - Sônia de Avila Botton
- Programa de Pós-graduação em Medicina Veterinária, Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Av. Roraima, 1000, Prédio 44 (CCRII), Sala 5132, Bairro Camobi, Santa Maria, RS, 97105-900, Brazil.
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12
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Trespalacios Sierra A, Arroyo-Salgado B, Rodriguez-Blanco J, Tibocha Gordon I, Martínez-Ávila MC. Systemic protothecosis in an immunocompetent patient. Trop Dis Travel Med Vaccines 2022; 8:23. [PMID: 36242058 PMCID: PMC9569104 DOI: 10.1186/s40794-022-00180-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/18/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Although uncommon, there is increasing interest and public health concerns of the pathogen Prototheca spp, a ubiquitous achlorophilic microalgae that can affect both humans and animals. High mortality rates have been reported in immunocompromised patients with disseminated infection, but no data is available in the immunocompetent population. CASE PRESENTATION We present the case of a 59-year-old man from rural area of Colombia who was admitted to the intensive care unit due to decompensated heart failure that was difficult to medically manage, with development of septic shock and isolation of Prototheca wickerhamii from blood culture. Fluconazole and Amphotericin B were given with successful outcome. CONCLUSIONS To date, protothecosis and its virulence factors and pathogenesis remain to be fully understood, in our case the isolation of this microalga and its implication of exacerbating chronic conditions such as heart failure is unclear. The medical-scientific community is invited to study this microorganism to determine effective management strategies, as well as its timely identification, treatment, and control, to avoid fatal outcomes.
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Affiliation(s)
| | - Bárbara Arroyo-Salgado
- grid.412885.20000 0004 0486 624XBiomedical, Toxicological and Environmental Sciences Research Group (Biotoxam), Universidad de Cartagena, Cartagena, Colombia
| | | | | | - María Cristina Martínez-Ávila
- grid.412885.20000 0004 0486 624XBiomedical, Toxicological and Environmental Sciences Research Group (Biotoxam), Universidad de Cartagena, Cartagena, Colombia ,Department of Epidemiology and Public Health, Biomedical, Toxicological and Environmental Sciences Research Group, Cartagena, Colombia
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13
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Bozzo G, Dimuccio MM, Casalino G, Ceci E, Corrente M. New Approaches for risk assessment and management of bovine protothecosis. Saudi J Biol Sci 2022; 29:103368. [PMID: 35846387 PMCID: PMC9283663 DOI: 10.1016/j.sjbs.2022.103368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/30/2022] [Accepted: 06/27/2022] [Indexed: 11/21/2022] Open
Abstract
Protothecosis is a potential zoonosis related to bovine mastitis. In several countries, a higher incidence of protothecal bovine mastitis that is being recorded and the resistance of Prototheca species to various factors (chlorine, high temperatures, antimicrobial and antiseptic treatments, pH variations), make it difficult to control its spread among farms. The authors aim to describe the infection caused by microalgae, focusing on the problems within cattle farms and proposing new approaches to farm management, based on Regulation (EU) No 2016/429 on transmissible animal diseases. This new flexible approach, based on risk analysis, is a further tool in protecting against Prototheca species. The list of transmissible animal diseases under Regulation (EU) No 2016/429 includes those caused by microorganisms resistant to antimicrobials, which can have important implications for human and animal health, feed and food safety. This approach would involve a series of changes to the rules used for Official Controls (Regulation (EU) No 2017/625) moving from the concept of the food chain to that of the agri-food chain.
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14
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Wang X, Ran Y, Jia S, Ahmed S, Long X, Jiang Y, Jiang Y. Human Disseminated Protothecosis: The Skin is the "Window"? Front Immunol 2022; 13:880196. [PMID: 35774787 PMCID: PMC9238287 DOI: 10.3389/fimmu.2022.880196] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/12/2022] [Indexed: 11/13/2022] Open
Abstract
Human disseminated protothecosis is a rare infection caused by members of the genus Prototheca, an achlorophyllic algae always associated with debilitated hosts. The presence of non-budding cells and large, spherical cells (sporangia) with endosporulation (morula) in histology is proof of Prototheca infection. Regrettably, due to the lack of specificity of clinical features and low awareness among clinicians, protothecosis is always underestimated and misdiagnosed. The available data on a species-specific analysis of this infection are limited. In this review, we summarize the etiological, epidemiological, and clinical aspects of disseminated protothecosis. The potential pathogenicity and clinical differences between P. zopfii and P. wickerhamii were observed. Additionally, the skin not only became the main invasion site but also the most involved organ by the pathogen. With the increasing numbers of immunocompromised individuals throughout the world, the incidence of disseminated infection caused by Prototheca is bound to increase, and disseminated protothecosis that accompanies skin symptoms should be taken into account by clinicians.
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Affiliation(s)
- Xue Wang
- Department of Dermatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
- Department of Microbiology, Basic Medical School, Guizhou Medical University, Guiyang, China
| | - Yuanshuai Ran
- Department of Dermatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Songgan Jia
- Department of Dermatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Sarah Ahmed
- Centre of Expertise in Mycology of Radboud University Medical Center/Canisius Wilhelmina Hospital, Nijmegen, Netherlands
| | - Xuemei Long
- Department of Dermatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Yinhui Jiang
- Laboratory of Medical Molecular Biology, Guizhou Medical University, Guiyang, China
| | - Yanping Jiang
- Department of Dermatology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
- Centre of Expertise in Mycology of Radboud University Medical Center/Canisius Wilhelmina Hospital, Nijmegen, Netherlands
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15
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Libisch B, Picot C, Ceballos-Garzon A, Moravkova M, Klimesová M, Telkes G, Chuang ST, Le Pape P. Prototheca Infections and Ecology from a One Health Perspective. Microorganisms 2022; 10:microorganisms10050938. [PMID: 35630382 PMCID: PMC9144699 DOI: 10.3390/microorganisms10050938] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 11/29/2022] Open
Abstract
Prototheca microalgae were only recognized as pathogens of both humans and animals in the 1960s; however, since then, these microbes have been drawing increasing interest in both human and veterinary medicine. The first human outbreak of protothecosis in a tertiary care chemotherapy ward in 2018 further highlighted the need to understand in more depth and detail their ecology, etiology, pathogenesis and routes of transmission between different hosts, environments and habitats from a One Health perspective. Protothecal infections have been reported in a growing number of cattle herds around the world in recent decades, and Prototheca has become an important bovine mastitis pathogen in certain countries and regions. The survival of Prototheca in the environment and its ability to spread in the herd pose a serious challenge to the management of infected dairy farms. Prevention of the disease is particularly important, as there is no effective and reliable treatment for it and the chances of self-healing are minimal. Therefore, the development of more effective drugs is needed for the treatment of human and animal protothecosis. The prudent use of antibiotics and their replacement by alternative or preventive measures, when possible, may further contribute to the control of protothecal infections.
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Affiliation(s)
- Balázs Libisch
- Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Gödöllő, Hungary
- Correspondence: (B.L.); (P.L.P.)
| | - Carine Picot
- EA 1155 IICiMed—Cibles et Médicaments des Infections et du Cancer, Université de Nantes, F-44000 Nantes, France; (C.P.); (A.C.-G.)
| | - Andrés Ceballos-Garzon
- EA 1155 IICiMed—Cibles et Médicaments des Infections et du Cancer, Université de Nantes, F-44000 Nantes, France; (C.P.); (A.C.-G.)
| | | | | | - Gábor Telkes
- Department of Surgery, Transplantation and Gastroenterology, Semmelweis University, 1082 Budapest, Hungary;
| | - Shih-Te Chuang
- Department of Veterinary Medicine, National Chung Hsing University, Taichung City 402, Taiwan;
| | - Patrice Le Pape
- EA 1155 IICiMed—Cibles et Médicaments des Infections et du Cancer, Université de Nantes, F-44000 Nantes, France; (C.P.); (A.C.-G.)
- Correspondence: (B.L.); (P.L.P.)
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16
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Ely VL, Pereira DIB, da Costa MM, Panagio L, Nakasato G, Reis G, Cargnelutti JF, Sangioni LA, de Avila Botton S. Activity of biogenic silver nanoparticles against isolates of
Prototheca
species from bovine mastitis. Lett Appl Microbiol 2022; 75:24-28. [DOI: 10.1111/lam.13696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/17/2022] [Accepted: 02/25/2022] [Indexed: 11/26/2022]
Affiliation(s)
- Valessa Lunkes Ely
- Programa de Pós‐graduação em Medicina Veterinária (PPGMV) Departamento de Medicina Veterinária Preventiva (DMVP) Universidade Federal de Santa Maria (UFSM). Av. Roraima 1000 Prédio 44 Sala 5125 Bairro Camobi Santa Maria RS Brasil
| | - Daniela Isabel Brayer Pereira
- Departamento de Microbiologia e Parasitologia Instituto de Biologia Universidade Federal de Pelotas (UFPel) Prédio 18 Sala 14 Campus Universitário Capão do Leão s/nº CEP 96160‐000 Brasil
| | - Mateus Matiuzzi da Costa
- Universidade Federal do Vale do São Francisco (UNIVASF) Projeto Irrigação Senador Nilo Coelho s/nº Rodovia BR 407 ‐ Km 12, Lote 543 Petrolina CEP 56300‐990 Brasil
| | - Luciano Panagio
- Universidade Estadual de Londrina (UEL) Centro de Ciências Biológicas Departamento de Microbiologia Rodovia Celso Garcia Cid Paraná 445 Km 380, Campus Universitário 86051990 Londrina Brasil
| | - Gerson Nakasato
- Universidade Estadual de Londrina (UEL) Centro de Ciências Biológicas Departamento de Microbiologia Rodovia Celso Garcia Cid Paraná 445 Km 380, Campus Universitário 86051990 Londrina Brasil
| | - Guilherme Reis
- Universidade Estadual de Londrina (UEL) Centro de Ciências Biológicas Departamento de Microbiologia Rodovia Celso Garcia Cid Paraná 445 Km 380, Campus Universitário 86051990 Londrina Brasil
| | - Juliana Felipetto Cargnelutti
- Programa de Pós‐graduação em Medicina Veterinária (PPGMV) Departamento de Medicina Veterinária Preventiva (DMVP) Universidade Federal de Santa Maria (UFSM). Av. Roraima 1000 Prédio 44 Sala 5125 Bairro Camobi Santa Maria RS Brasil
| | - Luís Antônio Sangioni
- Programa de Pós‐graduação em Medicina Veterinária (PPGMV) Departamento de Medicina Veterinária Preventiva (DMVP) Universidade Federal de Santa Maria (UFSM). Av. Roraima 1000 Prédio 44 Sala 5125 Bairro Camobi Santa Maria RS Brasil
| | - Sônia de Avila Botton
- Programa de Pós‐graduação em Medicina Veterinária (PPGMV) Departamento de Medicina Veterinária Preventiva (DMVP) Universidade Federal de Santa Maria (UFSM). Av. Roraima 1000 Prédio 44 Sala 5125 Bairro Camobi Santa Maria RS Brasil
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17
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Guo J, Jian J, Wang L, Xiong L, Lin H, Zhou Z, Sonnenschein EC, Wu W. Genome Sequences of Two Strains of Prototheca wickerhamii Provide Insight Into the Protothecosis Evolution. Front Cell Infect Microbiol 2022; 12:797017. [PMID: 35186789 PMCID: PMC8847788 DOI: 10.3389/fcimb.2022.797017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 01/10/2022] [Indexed: 11/13/2022] Open
Abstract
The Prototheca alga is the only chlorophyte known to be involved in a series of clinically relevant opportunistic infections in humans and animals, namely, protothecosis. Most pathogenic cases in humans are caused by Prototheca wickerhamii. In order to investigate the evolution of Prototheca and the genetic basis for its pathogenicity, the genomes of two P. wickerhamii strains S1 and S931 were sequenced using Nanopore long-read and Illumina short-read technologies. The mitochondrial, plastid, and nuclear genomes were assembled and annotated including a transcriptomic data set. The assembled nuclear genome size was 17.57 Mb with 19 contigs and 17.45 Mb with 26 contigs for strains S1 and S931, respectively. The number of predicted protein-coding genes was approximately 5,700, and more than 96% of the genes could be annotated with a gene function. A total of 2,798 gene families were shared between the five currently available Prototheca genomes. According to the phylogenetic analysis, the genus of Prototheca was classified in the same clade with A. protothecoides and diverged from Chlorella ~500 million years ago (Mya). A total of 134 expanded genes were enriched in several pathways, mostly in metabolic pathways, followed by biosynthesis of secondary metabolites and RNA transport. Comparative analysis demonstrated more than 96% consistency between the two herein sequenced strains. At present, due to the lack of sufficient understanding of the Prototheca biology and pathogenicity, the diagnosis rate of protothecosis is much lower than the actual infection rate. This study provides an in-depth insight into the genome sequences of two strains of P. wickerhamii isolated from the clinic to contribute to the basic understanding of this alga and explore future prevention and treatment strategies.
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Affiliation(s)
- Jian Guo
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jianbo Jian
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Lili Wang
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lijuan Xiong
- Department of Laboratory Medicine, Guizhou University The Second Affiliated Hospital of Traditional Chinese Medicine, Guizhou, China
| | - Huiping Lin
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ziyi Zhou
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Eva C. Sonnenschein
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
- *Correspondence: Wenjuan Wu, ; Eva C. Sonnenschein,
| | - Wenjuan Wu
- Department of Laboratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
- *Correspondence: Wenjuan Wu, ; Eva C. Sonnenschein,
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18
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Plieger T, Wolf M. 18S and ITS2 rDNA sequence-structure phylogeny of Prototheca (Chlorophyta, Trebouxiophyceae). Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00971-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractProtothecosis is an infectious disease caused by organisms currently classified within the green algal genus Prototheca. The disease can manifest as cutaneous lesions, olecranon bursitis or disseminated or systemic infections in both immunocompetent and immunosuppressed patients. Concerning diagnostics, taxonomic validity is important. Prototheca, closely related to the Chlorella species complex, is known to be polyphyletic, branching with Auxenochlorella and Helicosporidium. The phylogeny of Prototheca was discussed and revisited several times in the last decade; new species have been described. Phylogenetic analyses were performed using ribosomal DNA (rDNA) and partial mitochondrial cytochrome b (cytb) sequence data. In this work we use Internal Transcribed Spacer 2 (ITS2) as well as 18S rDNA data. However, for the first time, we reconstruct phylogenetic relationships of Prototheca using primary sequence and RNA secondary structure information simultaneously, a concept shown to increase robustness and accuracy of phylogenetic tree estimation. Using encoded sequence-structure data, Neighbor-Joining, Maximum-Parsimony and Maximum-Likelihood methods yielded well-supported trees in agreement with other trees calculated on rDNA; but differ in several aspects from trees using cytb as a phylogenetic marker. ITS2 secondary structures of Prototheca sequences are in agreement with the well-known common core structure of eukaryotes but show unusual differences in their helix lengths. An elongation of the fourth helix of some species seems to have occurred independently in the course of evolution.
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19
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Dziurzyński M, Decewicz P, Iskra M, Bakuła Z, Jagielski T. Prototheca-ID: a web-based application for molecular identification of Prototheca species. DATABASE-THE JOURNAL OF BIOLOGICAL DATABASES AND CURATION 2021; 2021:6427586. [PMID: 34791104 PMCID: PMC8607299 DOI: 10.1093/database/baab073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/04/2021] [Accepted: 11/09/2021] [Indexed: 11/13/2022]
Abstract
The genus Prototheca houses unicellular, achlorophyllous, yeast-like algae, widely distributed in the environment. Protothecae are the only known plants that have repeatedly been reported to infect vertebrates, including humans. Although rare, protothecosis can be clinically demanding, with an unpredictable and treatment-resistant behavior. Accurate identification of Prototheca species relies upon DNA sequence-based typing of the mitochondrially encoded CYTB gene. However, no bioinformatic tool for the processing and analyzing of protothecal sequence data exists. Moreover, currently available sequence databases suffer from a limited number of records and lack of or flawed sequence annotations, making Prototheca identification challenging and often inconclusive. This report introduces the Prototheca-ID, a user-friendly, web-based application providing fast and reliable speciation of Prototheca isolates. In addition, the application offers the users the possibility of depositing their sequences and associated metadata in a fully open Prototheca-ID database, developed to enhance research integrity and quality in the field of Protothecae and protothecosis. Database URL: The Prototheca-ID application is available at https://prototheca-id.org.
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Affiliation(s)
- Mikołaj Dziurzyński
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, Warsaw 02-096, Poland
| | - Przemyslaw Decewicz
- Department of Environmental Microbiology and Biotechnology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, Warsaw 02-096, Poland
| | - Mateusz Iskra
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, Warsaw 02-096, Poland
| | - Zofia Bakuła
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, Warsaw 02-096, Poland
| | - Tomasz Jagielski
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, Warsaw 02-096, Poland
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20
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21
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Álvarez-Pérez S, Anega B, Díaz-de-Tuesta JA, González-Martín JV, Riesgo-Martínez M, García ME, Blanco JL. Susceptibility testing of Prototheca bovis isolates from cases of bovine mastitis using the CLSI reference broth microdilution method and the Sensititre YeastOne colorimetric panel. Med Mycol 2021; 59:1257-1261. [PMID: 34643716 DOI: 10.1093/mmy/myab063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/04/2021] [Accepted: 10/11/2021] [Indexed: 11/14/2022] Open
Abstract
A total of 62 Prototheca bovis isolates from cases of bovine mastitis were tested for susceptibility to different antifungal compounds by the Clinical and Laboratory Standards Institute (CLSI) reference microdilution method and a commercial colorimetric microdilution panel (Sensititre YeastOne). All isolates displayed low susceptibility to echinocandins (MICs > 8 μg/ml for anidulafungin, caspofungin, and micafungin), flucytosine (MIC > 64 μg/ml), and the azoles enilconazole and fluconazole (MICs > 4 and > 64 μg/ml, respectively). Moreover, 45.2%, 32.3%, and 1.6% of isolates had MICs > 4 μg/ml for ketoconazole, terbinafine, and voriconazole, respectively, when tested by the CLSI method. In contrast, all isolates were more susceptible to the polyene compounds amphotericin B and nystatin, and itraconazole, posaconazole, and ravuconazole (MICs ≤ 2 μg/ml, in all cases). Comparison of the results obtained in the CLSI and Sensititre methods showed excellent essential agreement (EA) for azoles (98.4% for itraconazole and posaconazole, and 100% for voriconazole) and moderate EA for amphotericin B (72.6%), when MICs were read after 24 h and 48 h of incubation, respectively. In contrast, much lower EA values were obtained in some cases when the MICs for both techniques were determined after 48 h of incubation (e.g., 9.7% for amphotericin B and 69.4% for posaconazole). Therefore, the CLSI broth microdilution method and the Sensititre YeastOne panel can be used indistinctly for susceptibility testing of P. bovis isolates against azoles but not against amphotericin B until further optimization of the test conditions. LAY SUMMARY The antifungal susceptibility of Prototheca bovis isolates was analyzed. All tested isolates displayed low susceptibility to echinocandins, flucytosine, and some azoles. Excellent agreement of the results of two different test methods was obtained for azoles, but not for the polyene amphotericin B.
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Affiliation(s)
- Sergio Álvarez-Pérez
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Blanca Anega
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - Juan A Díaz-de-Tuesta
- Regional Laboratory for Animal Health, Community of Madrid, Colmenar Viejo, Madrid, Spain
| | - Juan V González-Martín
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain.,VISAVET Health Surveillance Centre, Complutense University of Madrid, Madrid, Spain
| | | | - Marta E García
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
| | - José L Blanco
- Department of Animal Health, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
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22
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Teh JSK, Wilke AE, Overstall SM, Teng JC, Chin R, Couper JM, Lo CA, Waring LJ, Sheffield DA. Prototheca wickerhamii breast implant infection after reconstructive surgery: a new level of complexity. Med Mycol Case Rep 2021; 34:22-26. [PMID: 34584835 PMCID: PMC8455647 DOI: 10.1016/j.mmcr.2021.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/07/2021] [Accepted: 08/11/2021] [Indexed: 11/28/2022] Open
Abstract
We report the first published case of Prototheca wickerhamii breast implant infection. This occurred after mastectomy, chemotherapy, radiotherapy, breast reconstruction, implant revisions and breast seroma aspirations and was preceded by polymicrobial infection. Definitive treatment required implant removal and intravenous liposomal amphotericin B. The management of breast prosthesis infections is discussed.
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Affiliation(s)
- Joanne S K Teh
- Department of Perioperative Medicine, Cabrini Health, 181-183 Wattletree Road, Malvern, Victoria, 3144, Australia.,Department of General Medicine, Monash Health, Monash Medical Centre, 246 Clayton Road, Clayton, Victoria, 3168, Australia
| | - Amalie E Wilke
- Department of Infectious Diseases, Cabrini Health, 181-183 Wattletree Road, Malvern, Victoria, 3144, Australia
| | - Simon M Overstall
- Department of Plastic Surgery, Cabrini Health, 181-183 Wattletree Road, Malvern, Victoria, 3144, Australia
| | - Jasmine C Teng
- Department of Microbiology, Melbourne Pathology, 103 Victoria Parade, Collingwood, Victoria, 3066, Australia
| | - Ruth Chin
- Department of Infectious Diseases, Cabrini Health, 181-183 Wattletree Road, Malvern, Victoria, 3144, Australia
| | - Jennifer M Couper
- Department of Microbiology, Cabrini Pathology, Cabrini Health, 181-183 Wattletree Road, Malvern, Victoria, 3144, Australia
| | - Christine A Lo
- Department of Pharmacy, Cabrini Health, 181-183 Wattletree Road, Malvern, Victoria, 3144, Australia
| | - Lynette J Waring
- Department of Microbiology, Melbourne Pathology, 103 Victoria Parade, Collingwood, Victoria, 3066, Australia
| | - David A Sheffield
- Department of Infectious Diseases, Cabrini Health, 181-183 Wattletree Road, Malvern, Victoria, 3144, Australia.,Monash Infectious Diseases, Monash Medical Centre, 246 Clayton Road, Clayton, Victoria, 3168, Australia
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23
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Jinatham V, Cantoni DM, Brown IR, Vichaslip T, Suwannahitatorn P, Popluechai S, Tsaousis AD, Gentekaki E. Prototheca bovis, a unicellular achlorophyllous trebouxiophyte green alga in the healthy human intestine. J Med Microbiol 2021; 70. [PMID: 34486973 DOI: 10.1099/jmm.0.001415] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction. Prototheca species are non-photosynthetic trebouxiophyte algae ubiquitously distributed in nature and can be found in sewage and soil. This microbial eukaryote causes human protothecosis in immunocompromised individuals. Thus, Prototheca presence in the stool of individuals without gastrointestinal symptoms has been reported only rarely.Hypothesis/Gap statement. There is an absence of detailed characterization of human Prototheca isolates.Aim. The aim of this study was to perform morphological and molecular characterization of Prototheca isolates obtained from human stool.Methodology. Prototheca was isolated from faecal samples of four individuals living in a rural area in Thailand. A combination of bioimaging along with molecular and bioinformatics tools was used to characterize the four strains. The growth rate was tested using four media and three temperature conditions. Phylogenetic analysis using the small subunit ribosomal RNA (SSU rRNA) and cytochrome b (cytb) was also performed.Results. Static and live microscopy demonstrated the various life stages of Prototheca and its major defining cellular characteristics. An optimized DNA extraction methodology that improves DNA yield is provided. Partial fragments of the SSU rRNA and cytb genes were obtained. Phylogenetic analysis placed all four strains in the clade with Prototheca bovis. More broadly, Prototheca was not monophyletic but split into at least two distinct clades instead.Conclusion. The results represent the first molecular characterization of Prototheca in Thailand. The study provides insight into transmission dynamics of the organism and potential caveats in estimating the global prevalence of Prototheca. These will spearhead further investigations on Prototheca occurrence in rural areas of both industrialized and developing nations.
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Affiliation(s)
- Vasana Jinatham
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Diego M Cantoni
- Laboratory of Molecular and Evolutionary Parasitology, RAPID group, School of Biosciences, University of Kent, Canterbury, UK
| | - Ian R Brown
- Bioimaging Facility, School of Biosciences, University of Kent, Canterbury, UK
| | | | | | - Siam Popluechai
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.,Gut Microbiome Research Group, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Anastasios D Tsaousis
- Laboratory of Molecular and Evolutionary Parasitology, RAPID group, School of Biosciences, University of Kent, Canterbury, UK
| | - Eleni Gentekaki
- School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.,Gut Microbiome Research Group, Mae Fah Luang University, Chiang Rai 57100, Thailand
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24
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Lu Y, Zhang X, Ni F, Xia W. Cutaneous Protothecosis with Meningitis Due to Prototheca wickerhamii in an Immunocompetent Teenager: Case Report and Literature Review. Infect Drug Resist 2021; 14:2787-2794. [PMID: 34321895 PMCID: PMC8312625 DOI: 10.2147/idr.s320795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 06/25/2021] [Indexed: 12/01/2022] Open
Abstract
Human protothecosis is a rare infection caused by Prototheca spp., which are environmental achloric algae ubiquitously existing in nature. Members of the genus of Prototheca usually cause localized infection that affects the skin or wounds. Systemic infection is extremely rare and tends to occur in immunocompromised patients. Here, we report a case of cutaneous protothecosis and meningitis due to Prototheca wickerhamii in an immunocompetent teenager who obtained full-body tattoos at the time of infection. To the best of our knowledge, this is the first description of P. wickerhamii isolated from both skin tissue and cerebrospinal fluid. The data contained in this report will increase our understanding of this pathogen and elucidate the most optimal treatment.
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Affiliation(s)
- Yanfei Lu
- Department of Laboratory Medicine, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, People's Republic of China.,National Key Clinical Department of Laboratory Medicine, Nanjing, People's Republic of China
| | - Xiaohui Zhang
- Department of Laboratory Medicine, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, People's Republic of China.,National Key Clinical Department of Laboratory Medicine, Nanjing, People's Republic of China
| | - Fang Ni
- Department of Laboratory Medicine, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, People's Republic of China.,National Key Clinical Department of Laboratory Medicine, Nanjing, People's Republic of China
| | - Wenying Xia
- Department of Laboratory Medicine, Jiangsu Province Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, People's Republic of China.,National Key Clinical Department of Laboratory Medicine, Nanjing, People's Republic of China
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25
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Góes LDM, Monteiro VDS, Souza ATOD. Case for diagnosis. Ulcer and papular lesions in a patient with diabete mellitus. Protothecosis. An Bras Dermatol 2021; 96:613-616. [PMID: 34266685 PMCID: PMC8441448 DOI: 10.1016/j.abd.2021.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/11/2021] [Accepted: 03/30/2021] [Indexed: 11/15/2022] Open
Abstract
Protothecosis is a rare disease caused by achlorophilic algae of the genus Prototheca spp. In general, three clinical forms are observed: cutaneous, articular and systemic. The cutaneous form is the most common one. This study describes a patient with isolated erythematous papules and erythematous papular plaques in the scapular regions, with a previous histopathological diagnosis of cryptococcosis. New tests were conclusive for the diagnosis of protothecosis, caused by Prototheca wickerhamii.
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26
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Hofbauer WK. Toxic or Otherwise Harmful Algae and the Built Environment. Toxins (Basel) 2021; 13:465. [PMID: 34209446 PMCID: PMC8310063 DOI: 10.3390/toxins13070465] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 12/30/2022] Open
Abstract
This article gives a comprehensive overview on potentially harmful algae occurring in the built environment. Man-made structures provide diverse habitats where algae can grow, mainly aerophytic in nature. Literature reveals that algae that is potentially harmful to humans do occur in the anthropogenic environment in the air, on surfaces or in water bodies. Algae may negatively affect humans in different ways: they may be toxic, allergenic and pathogenic to humans or attack human structures. Toxin-producing alga are represented in the built environment mainly by blue green algae (Cyanoprokaryota). In special occasions, other toxic algae may also be involved. Green algae (Chlorophyta) found airborne or growing on manmade surfaces may be allergenic whereas Cyanoprokaryota and other forms may not only be toxic but also allergenic. Pathogenicity is found only in a special group of algae, especially in the genus Prototheca. In addition, rare cases with infections due to algae with green chloroplasts are reported. Algal action may be involved in the biodeterioration of buildings and works of art, which is still discussed controversially. Whereas in many cases the disfigurement of surfaces and even the corrosion of materials is encountered, in other cases a protective effect on the materials is reported. A comprehensive list of 79 taxa of potentially harmful, airborne algae supplemented with their counterparts occurring in the built environment, is given. Due to global climate change, it is not unlikely that the built environment will suffer from more and higher amounts of harmful algal species in the future. Therefore, intensified research in composition, ecophysiology and development of algal growth in the built environment is indicated.
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Affiliation(s)
- Wolfgang Karl Hofbauer
- Umwelt, Hygiene und Sensorik, Fraunhofer-Institut für Bauphysik, 83626 Valley, Bavaria, Germany
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27
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Miura A, Kano R, Ito T, Suzuki K, Kamata H. In vitro algaecid effect of itraconazole and ravuconazole on Prototheca species. Med Mycol 2021; 58:845-847. [PMID: 31773164 DOI: 10.1093/mmy/myz119] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 10/16/2019] [Accepted: 11/07/2019] [Indexed: 02/01/2023] Open
Abstract
Protothecosis is a rare infection in humans, dogs, and cats, and its causative agent is Prototheca species, which consists of achlorophyllic algae that are ubiquitous in natural environments and hosts intestinal flora. Ravuconazole (RVZ) is a new available human azole drug in Japan since 2018 and broad-spectrum antifungal agent. In the present study, the in vitro susceptibility of clinical and environmental isolates of P. wickerhamii, P. zopfii, and P. blaschkeae to itraconazole (ITZ) voriconazole (VRZ), posaconazole (PCZ), and RVZ. RVZ was more potent than the other azoles against Protheca species and has considerable potential for use as a therapeutic agent for human and animal protothecosis.
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Affiliation(s)
- Ayumi Miura
- Department of Veterinary Pathobiology, Nihon University College of Bioresource Sciences, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Rui Kano
- Department of Veterinary Pathobiology, Nihon University College of Bioresource Sciences, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Takaaki Ito
- Veterinary Hospital Aichi P.F.A.M.A.A., 91-1 Oike, Hane-cho, Okazaki, Aichi 444-0816, Japan
| | - Kazuyuki Suzuki
- Department of Large Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, University, 582 Midorimati, Bunnkyoudai, Ebetsu, Hokkaido 069-8501, Japan
| | - Hiroshi Kamata
- Department of Veterinary Pathobiology, Nihon University College of Bioresource Sciences, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
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28
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Watanabe T, Ishikawa T, Sato H, Hirose N, Nonaka L, Matsumura K, Masubuchi A, Nishimura K, Masuda M. Characterization of Prototheca CYP51/ERG11 as a possible target for therapeutic drugs. Med Mycol 2021; 59:855-863. [PMID: 33838030 DOI: 10.1093/mmy/myab012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/17/2021] [Indexed: 11/13/2022] Open
Abstract
Prototheca spp. are achlorophyllous algae, ubiquitous in nature. An increasing number of human and animal cases of Prototheca infection (protothecosis) are reported, and antifungal azoles, which inhibit sterol 14α-demethylase (CYP51/ERG11) involved in ergosterol biosynthesis, have empirically been used for the treatment of protothecosis. Although Prototheca, like fungi, has ergosterol in the cell membrane, efficacy of the antifungal azoles in the treatment of protothecosis is controversial. For investigating the interaction of azole drugs with Prototheca CYP51/ERG11, the CYP51/ERG11 genomic genes of four strains of P. wickerhamii and one strain each of P. cutis and P. miyajii were isolated and characterized in this study. Compared with the CYP51/ERG11 gene of chlorophyllous Auxenochlorella Protothecoides, it is possible that ProtothecaCYP51/ERG11 gene, whose exon-intron structure appeared to be species-specific, lost introns associated with the loss of photosynthetic activity. Analysis of the deduced amino acid sequences revealed that Prototheca CYP51/ERG11 and fungal CYP51/ERG11 are phylogenetically distant from each other although their overall structures are similar. Our basic in silico studies predicted that antifungal azoles could bind to the catalytic pocket of Prototheca CYP51/ERG11. It was also suggested that amino acid residues away from the catalytic pocket might affect the drug susceptibility. The results of this study may provide useful insights into the phylogenetic taxonomy of Prototheca spp. in relationship to the CYP51/ERG11 structure and development of novel therapeutic drugs for the treatment of protothecosis. LAY SUMMARY Cases of infection by microalgae of Prototheca species are increasing. However, effective treatment has not been established yet. In this study, gene and structure of Prototheca's CYP51/ERG11, an enzyme which might serve as a target for therapeutic drugs, were characterized for the first time.
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Affiliation(s)
- Takahisa Watanabe
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan.,Hirara Clinic, Okinawa 906-0012, Japan
| | - Tomohiro Ishikawa
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| | - Hirotaka Sato
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| | - Noriyuki Hirose
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan.,BD Japan, Co., Ltd., Tokyo 107-0052, Japan
| | - Lisa Nonaka
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan.,Department of Nutritional Science, Faculty of Human Life Science, Shokei University, Kumamoto 862-8678, Japan
| | - Kaori Matsumura
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| | - Akira Masubuchi
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
| | - Kazuko Nishimura
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan.,First Laboratories, Co. Ltd., Kanagawa 211-0013, Japan
| | - Michiaki Masuda
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi 321-0293, Japan
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30
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Bakuła Z, Siedlecki P, Gromadka R, Gawor J, Gromadka A, Pomorski JJ, Panagiotopoulou H, Jagielski T. A first insight into the genome of Prototheca wickerhamii, a major causative agent of human protothecosis. BMC Genomics 2021; 22:168. [PMID: 33750287 PMCID: PMC7941945 DOI: 10.1186/s12864-021-07491-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 02/26/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Colourless microalgae of the Prototheca genus are the only known plants that have consistently been implicated in a range of clinically relevant opportunistic infections in both animals and humans. The Prototheca algae are emerging pathogens, whose incidence has increased importantly over the past two decades. Prototheca wickerhamii is a major human pathogen, responsible for at least 115 cases worldwide. Although the algae are receiving more attention nowadays, there is still a substantial knowledge gap regarding their biology, and pathogenicity in particular. Here we report, for the first time, the complete nuclear genome, organelle genomes, and transcriptome of the P. wickerhamii type strain ATCC 16529. RESULTS The assembled genome size was of 16.7 Mbp, making it the smallest and most compact genome sequenced so far among the protothecans. Key features of the genome included a high overall GC content (64.5%), a high number (6081) and proportion (45.9%) of protein-coding genes, and a low repetitive sequence content (2.2%). The vast majority (90.6%) of the predicted genes were confirmed with the corresponding transcripts upon RNA-sequencing analysis. Most (93.2%) of the genes had their putative function assigned when searched against the InterProScan database. A fourth (23.3%) of the genes were annotated with an enzymatic activity possibly associated with the adaptation to the human host environment. The P. wickerhamii genome encoded a wide array of possible virulence factors, including those already identified in two model opportunistic fungal pathogens, i.e. Candida albicans and Trichophyton rubrum, and thought to be involved in invasion of the host or elicitation of the adaptive stress response. Approximately 6% of the P. wickerhamii genes matched a Pathogen-Host Interaction Database entry and had a previously experimentally proven role in the disease development. Furthermore, genes coding for proteins (e.g. ATPase, malate dehydrogenase) hitherto considered as potential virulence factors of Prototheca spp. were demonstrated in the P. wickerhamii genome. CONCLUSIONS Overall, this study is the first to describe the genetic make-up of P. wickerhamii and discovers proteins possibly involved in the development of protothecosis.
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Affiliation(s)
- Zofia Bakuła
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096, Warsaw, Poland
| | - Paweł Siedlecki
- Department of Systems Biology, University of Warsaw, I. Miecznikowa 1, 02-096, Warsaw, Poland.,Department of Bioinformatics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, A. Pawińskiego 5a, 02-106, Warsaw, Poland
| | - Robert Gromadka
- DNA Sequencing and Synthesis Facility, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, A. Pawińskiego 5a, 02-106, Warsaw, Poland
| | - Jan Gawor
- DNA Sequencing and Synthesis Facility, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, A. Pawińskiego 5a, 02-106, Warsaw, Poland
| | - Agnieszka Gromadka
- Department of Bioinformatics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, A. Pawińskiego 5a, 02-106, Warsaw, Poland
| | - Jan J Pomorski
- Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00-679, Warsaw, Poland
| | - Hanna Panagiotopoulou
- Museum and Institute of Zoology, Polish Academy of Sciences, Wilcza 64, 00-679, Warsaw, Poland
| | - Tomasz Jagielski
- Department of Medical Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I. Miecznikowa 1, 02-096, Warsaw, Poland.
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31
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Falcaro C, Furlanello T, Binanti D, Fondati A, Bonfanti U, Krockenberger M, Malik R, Danesi P. Molecular characterization of Prototheca in 11 symptomatic dogs. J Vet Diagn Invest 2020; 33:156-161. [PMID: 33272142 DOI: 10.1177/1040638720976423] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Protothecosis is an uncommon disease caused by algae of the genus Prototheca. In dogs, the infection is usually first localized to the colon but has the propensity to later disseminate hematogenously to many other organs, with marked tropism for the eyes and central nervous system. Diagnosis is established by culture and/or evidence of Prototheca organisms in cytologic or histologic preparations. Species characterization, however, requires molecular investigations. Our laboratory set up a real-time PCR targeting portion D1/D2 of the 28S rRNA for identification of Prototheca species from both positive cultures (of rectal swabs and urine) and formalin-fixed, paraffin-embedded tissue. Prototheca bovis, P. ciferrii, and P. wickerhamii were characterized in 11 dogs with systemic or cutaneous protothecosis. Prototheca identifications were phylogenetically consistent with the new taxonomy proposed for this genus based on the mitochondrial cytochrome b gene. As a pilot study, we screened feces and rectal scrapes from 200 asymptomatic dogs, using 2 cohorts of stray and owned animals, to determine the prevalence of intestinal carriage of Prototheca spp. The Prototheca-negative results from both cohorts of healthy dogs suggest that predisposing factors related to the host probably contribute more to the acquisition of clinical disease than exposure to contaminated environments.
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Affiliation(s)
- Christian Falcaro
- Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padua, Italy
| | | | - Diana Binanti
- Laboratorio Analisi Veterinarie AbLab, Sarzana, La Spezia, Italy
| | | | - Ugo Bonfanti
- Laboratorio di Analisi Veterinarie La Vallonea, Passirana di Rho, Milan, Italy
| | - Mark Krockenberger
- Veterinary Pathology Diagnostic Services, Sydney School of Veterinary Science, The University of Sydney, Sydney, New South Wales, Australia
| | - Richard Malik
- Centre for Veterinary Education, The University of Sydney, Sydney, New South Wales, Australia
| | - Patrizia Danesi
- Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padua, Italy
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32
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Masuda M, Jagielski T, Danesi P, Falcaro C, Bertola M, Krockenberger M, Malik R, Kano R. Protothecosis in Dogs and Cats-New Research Directions. Mycopathologia 2020; 186:143-152. [PMID: 33206310 DOI: 10.1007/s11046-020-00508-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 11/02/2020] [Indexed: 11/25/2022]
Abstract
Protothecosis refers to disease of humans and animals caused by infection with fungus-like, colourless microalgae of the genus Prototheca. Although protothecosis remains an uncommon infection, increasing numbers of human and animal cases are being diagnosed worldwide. This review summarises major new findings in basic science (sequencing analyses of sterol 14α-demethylase (CYP51/ERG11) genes and organelle genomes of Prototheca wickerhamii) to elucidate taxonomic features of this pathogen. Furthermore, this review updates and summarises the clinical features, diagnosis and treatment of protothecosis in dogs and cats. This content of this review is based on information presented at the medical phycology symposium held in the 20th Congress of the International Society for Human and Animal Mycology ( https://www.isham.org/ ).
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Affiliation(s)
- Michiaki Masuda
- Department of Microbiology, Dokkyo Medical University School of Medicine, Tochigi, Japan
| | - Tomasz Jagielski
- Department of Medical Microbiology, Institute of Microbiology, University of Warsaw, Warsaw, Poland
| | - Patrizia Danesi
- Istituto Zooprofilattico Sperimentale Delle Venezie, Legnaro, PD, Italy
| | - Christian Falcaro
- Istituto Zooprofilattico Sperimentale Delle Venezie, Legnaro, PD, Italy
| | - Michela Bertola
- Istituto Zooprofilattico Sperimentale Delle Venezie, Legnaro, PD, Italy
| | - Mark Krockenberger
- Veterinary Pathology Diagnostic Services (VPDS), Sydney School of Veterinary Science, The University of Sydney, B14, Sydney, NSW, Australia
| | - Richard Malik
- Centre for Veterinary Education, The University of Sydney, B22, Sydney, NSW, 2006, Australia
| | - Rui Kano
- Department of Veterinary Dermatology, Nihon University School of Veterinary Medicine, 1866, Kameino, Fujisawa, Kanagawa, 252-0880, Japan.
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33
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Minato K, Yoshikawa M, Nakanishi H, Hasegawa K. Long Term Follow-Up of Prototheca keratitis: A Case Report. Int Med Case Rep J 2020; 13:503-506. [PMID: 33116941 PMCID: PMC7555245 DOI: 10.2147/imcrj.s268696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/04/2020] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Prototheca spp. are rare human pathogens, and only three cases of Prototheca keratitis have been reported. They were treated with anti-fungal drugs and surgical excision. Two of the three cases were successful, and the case of an immunocompromised patient was not successful. Thus, the best treatment of Prototheca keratitis is still undetermined, and further investigations are needed. The purpose of this report is to present our findings in a case of Prototheca keratitis that was successfully treated with topical medications without surgical excision. METHODS This study was performed in accordance with the Declaration of Helsinki and was approved by the Ethics Committee of Hidaka Medical Center, Toyooka Hospital. A written informed consent was obtained from the patient before beginning the medical treatments. CASE REPORT A 75-year-old man with a history of stage 4 prostate carcinoma and bilateral limbal stem cell deficiency had undergone keratoepithelioplasty on his left eye for the deficiency. Postoperatively, a greyish-white epithelial opacity was noted on the central cornea of his left eye, and he had been treated with topical fluorometholone and oral dexamethasone together with a therapeutic contact lens. Corneal smears and contact lens swabs were positive for Prototheca spp. He required a continuous treatment with amphotericin B (AMPH-B) ointment, topical fluconazole (FLCZ), and voriconazole (VRCZ). This treatment protocol was effective, but recurrences developed when his general condition worsened. CONCLUSION Our findings indicate that Prototheca keratitis can be successfully treated but not cured with topical AMPH-B, FLCZ, and VRCZ without surgical treatment. However, recurrences can develop when the general condition of the patient worsens. Thus, continuous monitoring and treatment are necessary in cases of Prototheca keratitis.
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Affiliation(s)
- Kazumi Minato
- Department of Ophthalmology, Eye Center, Hidaka Medical Center, Toyooka Hospital, Toyooka City, Hyogo669-5392, Japan
| | - Munemitsu Yoshikawa
- Department of Ophthalmology, Eye Center, Hidaka Medical Center, Toyooka Hospital, Toyooka City, Hyogo669-5392, Japan
| | - Hideo Nakanishi
- Department of Ophthalmology, Eye Center, Hidaka Medical Center, Toyooka Hospital, Toyooka City, Hyogo669-5392, Japan
| | - Kaori Hasegawa
- Department of Microbiology, Toyooka Hospital, Toyooka City, Hyogo668-0065, Japan
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34
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Bakuła Z, Gromadka R, Gawor J, Siedlecki P, Pomorski JJ, Maciszewski K, Gromadka A, Karnkowska A, Jagielski T. Sequencing and Analysis of the Complete Organellar Genomes of Prototheca wickerhamii. FRONTIERS IN PLANT SCIENCE 2020; 11:1296. [PMID: 32983192 PMCID: PMC7492744 DOI: 10.3389/fpls.2020.01296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
Of the Prototheca genus, Prototheca wickerhamii has the highest clinical significance in humans. However, neither nuclear nor organellar genomes of this species were sequenced until now. The hitherto determined and analyzed mitochondrial and plastid genomes of the alleged P. wickerhamii species belong in fact to another species, recently named Prototheca xanthoriae. This study provides a first insight into the organellar genomes of a true P. wickerhamii (type strain ATCC 16529). The P. wickerhamii mitochondrion had a 53.8-kb genome, which was considerably larger than that of Prototheca ciferrii (formerly Prototheca zopfii gen. 1) and Prototheca bovis (formerly Prototheca zopfii gen. 2), yet similarly functional, with the differences in size attributable to a higher number of introns and the presence of extra unique putative genes. The 48-kb plastid genome of P. wickerhamii, compared to autotrophic Trebouxiophyceae, was highly reduced due to the elimination of the photosynthesis-related genes. The gene content of the plastid genome of P. wickerhamii was, however, very similar to other colorless Prototheca species. Plastid genome-based phylogeny reinforced the polyphyly of the genus Prototheca, with Helicosporidium and Auxenochlorella branching within clades of Prototheca species. Phylogenetic reconstruction also confirmed the close relationship of P. wickerhamii and P. xanthoriae, which is reflected in the synteny of their organellar genomes. Interestingly, the entire set of atp genes was lost in P. wickerhamii plastid genome while being preserved in P. xanthoriae.
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Affiliation(s)
- Zofia Bakuła
- Department of Medical Microbiology, Faculty of Biology, Institute of Microbiology, University of Warsaw, Warsaw, Poland
| | - Robert Gromadka
- DNA Sequencing and Oligonucleotides Synthesis Laboratory at the Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Jan Gawor
- DNA Sequencing and Oligonucleotides Synthesis Laboratory at the Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Paweł Siedlecki
- Department of Systems Biology, University of Warsaw, Warsaw, Poland
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences (PAS), Warsaw, Poland
| | - Jan J. Pomorski
- Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw, Poland
| | - Kacper Maciszewski
- Institute of Evolutionary Biology, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, Poland
| | - Agnieszka Gromadka
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences (PAS), Warsaw, Poland
| | - Anna Karnkowska
- Institute of Evolutionary Biology, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, Poland
| | - Tomasz Jagielski
- Department of Medical Microbiology, Faculty of Biology, Institute of Microbiology, University of Warsaw, Warsaw, Poland
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35
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Koutsis JJ, Hong E. Protothecosis: a rare cutaneous infection in an army officer returned from deployment to Iraq. Australas J Dermatol 2020; 61:277-279. [DOI: 10.1111/ajd.13269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/30/2020] [Accepted: 02/10/2020] [Indexed: 11/28/2022]
Affiliation(s)
| | - Esther Hong
- Private practice Bankstown NSW Australia
- Dermatology Department Royal North Shore Hospital St Leonards NSW Australia
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36
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Zhao F, Chen M, Fu Y. Multiple cutaneous infections caused by Prototheca wickerhamii. J Clin Lab Anal 2020; 34:e23492. [PMID: 32692420 PMCID: PMC7676219 DOI: 10.1002/jcla.23492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/27/2020] [Accepted: 06/28/2020] [Indexed: 11/09/2022] Open
Abstract
Background Prototheca species are a group of organisms ubiquitously existing in nature but have become a pathogenic threat to public health, which has aroused wide attention. Species identification and antifungal susceptibility have essential and valuable meanings to clinical diagnosis and treatment. Methods A case of an 84‐year‐old patient who had suffered from multiple cutaneous infections was reported. Tissue samples of the damaged skin were collected from the patient and used for microscopic examination and tissue culture. Staining methods, the VITEK system with YSD card and the molecular identification method based on partial mitochondrion‐encoded cytochrome b (cytb) gene amplification and sequencing were used for species identification. Antifungal susceptibility testing was completed by using YeastOne plate. Results The patient had type II diabetes mellitus. Round, grape‐like, and scattered morula forms were observed under the microscope in bright blue with lactophenol cotton blue staining and in green fluorescence with fungus fluorescence staining. Yeast‐like colonies were grown on both the blood plates and the Sabouraud agar. P wichehamii was identified and presented resistance to three echinocandins, fluconazole, and 5‐fluorocytosine, while was susceptible to amphotericin B, posaconazole, itraconazole, and voriconazole. Conclusion Our result revealed that an old patient with diabetes mellitus might be a dangerous population of cutaneous protothecosis. It also highlighted the contribution to microbial methodology on the diagnosis and treatment of such rare fungus infection.
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Affiliation(s)
- Feng Zhao
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Miaode Chen
- Department of Emergency Surgery, The First People's Hospital of Wenling, Wenling, China
| | - Ying Fu
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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Adamczyk K, Wcisło-Dziadecka D, Garncarczyk A, Lubczyńska A, Chodurek E. Protothecosis: the alterations in the human foot microbiome - a case study. J Eur Acad Dermatol Venereol 2020; 34:e832-e834. [PMID: 32511818 DOI: 10.1111/jdv.16712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 05/21/2020] [Accepted: 05/27/2020] [Indexed: 11/28/2022]
Affiliation(s)
- K Adamczyk
- Department of Cosmetology, School of Pharmaceutical Science in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - D Wcisło-Dziadecka
- Department of Cosmetology, School of Pharmaceutical Science in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - A Garncarczyk
- Department of Cosmetology, School of Pharmaceutical Science in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - A Lubczyńska
- Department of Cosmetology, School of Pharmaceutical Science in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - E Chodurek
- Department of Biopharmacy, School of Pharmaceutical Science in Sosnowiec, Medical University of Silesia, Katowice, Poland
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Yang J, Zhu J, Kudinha T, Kong F, Zhang QQ. Differences in in vitro interactions between macrophages with pathogenic and environmental strains of Prototheca. Future Microbiol 2020; 15:427-436. [PMID: 32250172 DOI: 10.2217/fmb-2019-0238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: We investigated the interactions between macrophage and different strains of Prototheca. Materials & method: J774A.1 macrophages were infected with clinical isolates of Prototheca ciferrii 18125 and P. ciferrii 50779 and environmental isolate of P. ciferrii N71. Phagocytosis activities were compared by colony-forming unit assays at 3, 6 and 9 h after infection. Cytokine levels were detected by RT-PCR and ELISA. iNOS protein expression was examined by western blotting. Results: All P. ciferrii strains were phagocytized by macrophages but induced different levels of cytokines in macrophages. Moreover, infected by P. ciferrii N71 upregulated much higher iNOS protein expression in J774A.1 than that infected by the clinical strains. Conclusion: Clinical and environmental P. ciferrii strains show differences in their interactions with macrophages, which may be attributed to their virulence.
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Affiliation(s)
- Jin Yang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Junhao Zhu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Timothy Kudinha
- Charles Sturt University, Leeds Parade, Orange, New South Wales, Australia.,Centre for Infectious Diseases & Microbiology Laboratory Services, ICPMR-Pathology West, Westmead Hospital, University of Sydney, Darcy Road, Westmead, New South Wales, Australia
| | - Fanrong Kong
- Centre for Infectious Diseases & Microbiology Laboratory Services, ICPMR-Pathology West, Westmead Hospital, University of Sydney, Darcy Road, Westmead, New South Wales, Australia
| | - Qiang-Qiang Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai 200040, China
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Jagielski T, Bakuła Z, Gawor J, Maciszewski K, Kusber WH, Dyląg M, Nowakowska J, Gromadka R, Karnkowska A. The genus Prototheca (Trebouxiophyceae, Chlorophyta) revisited: Implications from molecular taxonomic studies. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101639] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Emergence of Fungal-Like Organisms: Prototheca. Mycopathologia 2019; 185:747-754. [PMID: 31401758 DOI: 10.1007/s11046-019-00365-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/18/2019] [Indexed: 10/26/2022]
Abstract
The genus Prototheca consists of achlorophyllic algae that are ubiquitous in the environment and animal intestines. However, this organism has forfeited its photosynthetic ability and switched to parasitism. In 1894, Krüger described two microorganisms isolated in Germany from mucous flux of Tilia and Ulmus spp., namely Prototheca moriformis and P. zopfii. Based on their yeast-like colony morphology, Krüger classified these organisms as fungi. The genus is now included within the class Trebouxiophyceae, order Chlorellales, and family Chlorellaceae. Historically, protothecosis and infections caused by green algae have been studied in the field of medical mycology. Prototheca spp. have been found to colonize human skin, fingernails, the respiratory tract, and digestive system. Although human infection by Prototheca is considered rare, an increase in infections has been noted among immunosuppressed patients, those on corticosteroid treatment, or both. Moreover, the first human outbreak of protothecal algaemia and sepsis was recently reported in a tertiary care chemotherapy oncology unit in 2018. Prototheca is also a causative pathogen of bovine disease. Prototheca zopfii and P. blaschkeae are associated with bovine mastitis, which causes a reduction in milk production and secretion of thin, watery milk containing white flakes. Economic losses are incurred either directly via reduced milk production and premature culling of affected animals or indirectly as a result of treatment and veterinary care expenses. Thus, knowledge of this fungal-like pathogen is essential in human and veterinary medicine. In this mini-review, I briefly introduce human and animal protothecoses.
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First bloodstream infection due to Prototheca zopfii var. hydrocarbonea in an immunocompromised patient. Med Mycol Case Rep 2019; 24:9-12. [PMID: 30859058 PMCID: PMC6395827 DOI: 10.1016/j.mmcr.2019.02.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 01/17/2019] [Accepted: 02/08/2019] [Indexed: 12/05/2022] Open
Abstract
Here we describe a bloodstream infection due to P. zopfii var. hydrocarbonea in a patient with acute lymphoblastic leukemia. Identification was performed by DNA sequencing of the D1/D2 domain of 26s ribosomal DNA and by MALDI-TOF MS technique. Antifungal susceptibility tests against amphotericin B, fluconazole, itraconazole, and voriconazole showed the following MIC values, respectively: 0.25 mg/L, 128 mg/L, 0.064 mg/L, and 0.125 mg/L. The patient received amphotericin B treatment with a successful outcome.
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