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Dornelles G, Araújo GRDS, Rodrigues M, Alves V, Almeida-Paes R, Frases S. Comparative Analysis of Capsular and Secreted Polysaccharides Produced by Rhodotorula mucilaginosa and Cryptococcus neoformans. J Fungi (Basel) 2023; 9:1124. [PMID: 37998929 PMCID: PMC10672113 DOI: 10.3390/jof9111124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 11/13/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023] Open
Abstract
Fungal infections are a global public health challenge, especially among immunocompromised patients. Basidiomycetous yeasts, such as Rhodotorula mucilaginosa, have emerged as opportunistic pathogens, but have received less attention than Cryptococcus neoformans. This study aimed to characterize the polysaccharides of R. mucilaginosa and compare them with those of C. neoformans, analyzing their clinical implications. Comprehensive physicochemical, mechanical, and ultrastructural analyses of polysaccharides from both species were performed, revealing correlations with virulence and pathogenicity. R. mucilaginosa cells are surrounded by a capsule smaller than that produced by C. neoformans, but with similar polysaccharides. Those polysaccharides are also secreted by R. mucilaginosa. Cross-reactivity with R. mucilaginosa was observed in a diagnostic C. neoformans antigen test, using both in vitro and in vivo samples, highlighting the need for more reliable tests. Some R. mucilaginosa strains exhibited virulence comparable to that of C. neoformans in an invertebrate experimental model (Tenebrio molitor). This study contributes to a deeper understanding of yeast pathogenicity and virulence, highlighting the need for more accurate diagnostic tests to improve the differential diagnosis of infections caused by basidiomycetous yeasts.
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Affiliation(s)
- Gustavo Dornelles
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (G.D.); (G.R.d.S.A.); (M.R.); (V.A.)
| | - Glauber R. de S. Araújo
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (G.D.); (G.R.d.S.A.); (M.R.); (V.A.)
| | - Marcus Rodrigues
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (G.D.); (G.R.d.S.A.); (M.R.); (V.A.)
| | - Vinicius Alves
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (G.D.); (G.R.d.S.A.); (M.R.); (V.A.)
| | - Rodrigo Almeida-Paes
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro 21040-900, Brazil;
- Rede Micologia RJ, Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro 21040-360, Brazil
| | - Susana Frases
- Laboratório de Biofísica de Fungos, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, Brazil; (G.D.); (G.R.d.S.A.); (M.R.); (V.A.)
- Rede Micologia RJ, Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro 21040-360, Brazil
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2
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Coutinho JOPA, Quintanilha MF, Campos MRA, Ferreira E, de Menezes GCA, Rosa LH, Rosa CA, Vital KD, Fernandes SOA, Cardoso VN, Nicoli JR, Tiago FCP, Martins FS. Antarctic Strain of Rhodotorula mucilaginosa UFMGCB 18,377 Attenuates Mucositis Induced by 5-Fluorouracil in Mice. Probiotics Antimicrob Proteins 2021; 14:486-500. [PMID: 34255281 DOI: 10.1007/s12602-021-09817-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2021] [Indexed: 12/17/2022]
Abstract
Mucositis is one of the most strenuous side effects caused by chemotherapy drugs, such as 5-fluorouracil (5-FU), during the treatment of several types of cancers. The disease is so prevalent and aggressive that many patients cannot resist such symptoms. However, despite its frequency and clinical significance, there is no effective treatment to prevent or treat mucositis. Thus, the use of probiotics as an adjuvant for the treatment has gained prominence. In the present study, we evaluated the effectiveness of oral administration of the Antarctic strain of Rhodotorula mucilaginosa UFMGCB 18,377 as an alternative to minimize side effects of 5-FU-induced mucositis in mice. Body weight, food consumption, stool consistency, and presence of blood in the feces were assessed daily in mice orally treated or not with the yeast and submitted or not to experimental mucositis. Blood, bones, and intestinal tissues and fluid were used to determine intestinal permeability and immunological, microbiological, and histopathological parameters. Treatment with R. mucilaginosa UFMGCB 18,377 was able to decrease clinical signs of the disease, such as reduction of food intake and body weight loss, and also decreased the number of intestinal enterobacteria and intestinal length shortening. Additionally, treatment was able to decrease the levels of MPO and EPO activities and inflammatory infiltrates, as well as the histopathological lesions characteristic of mucositis in the jejunum and ileum. Results of the present study showed that the oral administration of R. mucilaginosa UFMGCB 18,377 protected mice against mucositis induced by 5-FU.
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Affiliation(s)
- Joana O P A Coutinho
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Mônica F Quintanilha
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marina R A Campos
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Enio Ferreira
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Graciéle C A de Menezes
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luiz H Rosa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Carlos A Rosa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Katia D Vital
- Departamento de Análises Clínicas E Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Simone O A Fernandes
- Departamento de Análises Clínicas E Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Valbert N Cardoso
- Departamento de Análises Clínicas E Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jacques R Nicoli
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fabiana C P Tiago
- Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), Belo Horizonte, MG, Brazil
| | - Flaviano S Martins
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. .,Laboratório de Agentes Bioterapêuticos, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 30270-901, Brazil.
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Cell Envelope Integrity and Capsule Characterization of Rhodotorula mucilaginosa Strains from Clinical and Environmental Sources. mSphere 2019; 4:4/3/e00166-19. [PMID: 31167944 PMCID: PMC6553552 DOI: 10.1128/msphere.00166-19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Currently, there is very little known about the phenotypic variability within species of Rhodotorula strains and the role of their capsule. Cryptococcus neoformans has been considered the only encapsulated human fungal pathogen, but as more individuals come to live in states of immunocompromised health, they are more susceptible to fungal infections, including those by Rhodotorula. R. mucilaginosa species are some of those most commonly associated with clinical infections. We wanted to know if clinical and environmental strains of R. mucilaginosa demonstrated disparate capsule phenotypes. With limited antifungal options available and clinical Rhodotorula spp. often resistant to common antifungal drugs such as fluconazole, caspofungin (1, 2), and voriconazole (2), a better understanding of the fungal biology could inform the design and use of future antifungal drugs. The generation of an antibody specific to Rhodotorula fungi could be a useful diagnostic tool, and this work presents the first mention of such in the literature. Rhodotorula yeasts are pink, encapsulated basidiomycetes isolated from a variety of environments and clinical settings. They are increasingly linked with disease, particularly central venous catheter infections and meningitis, in immunocompromised patients. Eight clinical and eight environmental strains molecularly typed as Rhodotorula mucilaginosa were compared to six Cryptococcus neoformans strains for phenotypic variability. Growth on cell integrity-challenging media suggested that R. mucilaginosa cells possess differences in signaling pathways, cell wall composition, or assembly and that their membranes are more susceptible to perturbations than those of C. neoformans. All 16 R. mucilaginosa strains produced urease, while none produced melanin with l-3,4-dihydroxyphenylalanine (l-DOPA) as a substrate. India ink staining reveals that clinical R. mucilaginosa capsules are larger than environmental capsules but that both are generally smaller than C. neoformans capsules. All R. mucilaginosa strains were resistant to fluconazole. Only two clinical strains were susceptible to voriconazole; all of the environmental strains were resistant. We generated an anticapsular antibody (Rh1) to R. mucilaginosa; Rh1 did not bind C. neoformans control strains, was specific to Rhodotorula species, and bound to all tested Rhodotorula strains. Binding assays performed with wheat germ agglutinin (WGA), concanavalin A (ConA), calcofluor white (CFW), and eosin Y dye (EY) cell surface probes suggested that chitin may be more accessible in R. mucilaginosa but that the total abundance of chitooligomers is less than in C. neoformans. This report describes a novel reagent that can be used to identify Rhodotorula species and lays the foundation for future cell envelope composition analysis. IMPORTANCE Currently, there is very little known about the phenotypic variability within species of Rhodotorula strains and the role of their capsule. Cryptococcus neoformans has been considered the only encapsulated human fungal pathogen, but as more individuals come to live in states of immunocompromised health, they are more susceptible to fungal infections, including those by Rhodotorula. R. mucilaginosa species are some of those most commonly associated with clinical infections. We wanted to know if clinical and environmental strains of R. mucilaginosa demonstrated disparate capsule phenotypes. With limited antifungal options available and clinical Rhodotorula spp. often resistant to common antifungal drugs such as fluconazole, caspofungin (1, 2), and voriconazole (2), a better understanding of the fungal biology could inform the design and use of future antifungal drugs. The generation of an antibody specific to Rhodotorula fungi could be a useful diagnostic tool, and this work presents the first mention of such in the literature.
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Ioannou P, Vamvoukaki R, Samonis G. Rhodotorulaspecies infections in humans: A systematic review. Mycoses 2018; 62:90-100. [DOI: 10.1111/myc.12856] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 09/19/2018] [Accepted: 09/22/2018] [Indexed: 01/20/2023]
Affiliation(s)
- Petros Ioannou
- Department of Internal Medicine & Infectious Diseases; University Hospital of Heraklion; Heraklion Greece
| | - Rodanthi Vamvoukaki
- Department of Internal Medicine & Infectious Diseases; University Hospital of Heraklion; Heraklion Greece
| | - George Samonis
- Department of Internal Medicine & Infectious Diseases; University Hospital of Heraklion; Heraklion Greece
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5
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Tligui H, Oudaina W, El Ftouh S, Madda F, Hesseissen L. [A skin ulcer infection due to Rhodotorula mucilaginosa in an immunocompromised child]. J Mycol Med 2018; 28:215-217. [PMID: 29551441 DOI: 10.1016/j.mycmed.2018.01.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 01/16/2018] [Accepted: 01/18/2018] [Indexed: 10/17/2022]
Abstract
Human cutaneous infections due to Rhodotorula species as an emerged pathogens yeasts are rarely reported, particularly in skin folds, with the ability to infect immunocompromised as well as immunocompetent patient. In present case, we describe a fungal cutaneous infection due to Rhodotorula mucilaginosa in immunocompromised child, the patient has been diagnosed with retinoblastoma; the diagnosis was established by the cytological and clinical examination. However, the cytological examination found fungal forms. The diagnosis relies on the microbiological analysis of clinical samples but the interpretation of a positive culture should be part of and over all analysis that integrate clinical symptoms and risk factors. Most of cases of infection due to Rhodotorula were associated with central venous catheter in patients who were receiving immunosuppressors and cyotoxic drugs. The antifungal susceptibility testing was done; a fluconazol and ketoconazol showed susceptibles. The patient was treated by combinate antifungal therapy and empirical antimicrobial regimen for prophylaxis.
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Affiliation(s)
- H Tligui
- Research Laboratory of Ibn Sina Hospital, CHU Ibn Sina, hôpital d'enfants Rabat, Rabat Institut, BP 6527, rue Lamfadel-Cherkaoui, Rabat, Maroc.
| | - W Oudaina
- Research Laboratory of Ibn Sina Hospital, CHU Ibn Sina, hôpital d'enfants Rabat, Rabat Institut, BP 6527, rue Lamfadel-Cherkaoui, Rabat, Maroc
| | - S El Ftouh
- Research Laboratory of Ibn Sina Hospital, CHU Ibn Sina, hôpital d'enfants Rabat, Rabat Institut, BP 6527, rue Lamfadel-Cherkaoui, Rabat, Maroc
| | - F Madda
- Pediatric Hematology and Oncology Center, Ibn Sina Hospital, Rabat, Maroc
| | - L Hesseissen
- Pediatric Hematology and Oncology Center, Ibn Sina Hospital, Rabat, Maroc
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6
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Production control and characterization of antibacterial carotenoids from the yeast Rhodotorula mucilaginosa AY-01. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.01.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Carrilho PEM, Santos MBMD, Piasecki L, Jorge AC. Marchiafava-Bignami disease: a rare entity with a poor outcome. Rev Bras Ter Intensiva 2015; 25:68-72. [PMID: 23887763 PMCID: PMC4031867 DOI: 10.1590/s0103-507x2013000100013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 02/21/2013] [Indexed: 11/22/2022] Open
Abstract
Marchiafava-Bignami disease is a rare affliction characterized by primary degeneration of the corpus callosum associated with chronic consumption of ethanol. The disease may occasionally occur in patients who are not alcoholics but are chronically malnourished. A complex deficiency of group B vitamins is the main etiopathogenic hypothesis, and many patients improve after the administration of these compounds. However, a good response is not always observed. The definitive diagnosis of Marchiafava-Bignami disease can be problematic and is based on features of neuroimaging studies, especially magnetic resonance imaging. Its treatment is still controversial and shows variable results. Because nutritional factors are implicated, as in Wernicke's encephalopathy, some authors claim that replacement of B vitamins is beneficial. The present article is a case report of a severe acute form of Marchiafava-Bignami disease in an alcohol-dependent male patient who improved after the administration of parenteral B vitamins. As a consequence of his neurological and immunologic conditions, he developed multiple pulmonary infections and had a protracted course in the intensive care unit. He eventually died of sepsis associated with an uncommon fungus, Rhodotorula mucilaginosa. The present article reports the clinical and neuroimaging data from this patient and contains a review of Marchiafava-Bignami disease and Rhodotorula infections in the intensive care unit.
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Mohd Nor F, Tan LH, Na SL, Ng KP. Meningitis Caused by Rhodotorula mucilaginosa in HIV-Infected Patient: A Case Report and Review of the Literature. Mycopathologia 2015; 180:95-8. [PMID: 25739670 DOI: 10.1007/s11046-015-9879-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 02/25/2015] [Indexed: 11/28/2022]
Abstract
Rhodotorula species are increasingly being identified as a cause of fungal infection in the central nervous system, especially in patients with compromised immunity. The diagnosis could easily be missed due to low index of suspicion, as cryptococcus meningitis and cerebral toxoplasmosis are more common amongst immunocompromised hosts. To date, there are six cases of Rhodotorula-related meningitis reported, and three are associated with human immunodeficiency virus infection. In this report, a case of a Malaysian male with underlying human immunodeficiency virus infection who developed Rhodotorula mucilaginosa meningitis is presented. High-grade fever and severe headaches were the complaints presented in three previous case reports. India ink and nigrosin stainings were performed in the two previous reports and both revealed positive results. R. mucilaginosa were isolated from the culture of the patient's cerebrospinal fluid in all three previous reports. Predominant lymphocyte infiltration in the cerebrospinal fluid examination was documented in two reports. CD4 counts were above 100/µl in two previously published reports, while another report documented CD4 count as 56/µl. Amphotericin B and itraconazole are identified to be the first line of antifungal used and as the maintenance therapy, respectively. The possibility of relapse cannot be excluded as it was reported in the first report. It was also revealed that the current case has almost similar clinical presentation and therapeutic outcome as compared to the published reports, but some differences in diagnostic details were to be highlighted.
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Affiliation(s)
- Fadzilah Mohd Nor
- Drug Discovery and Health Community Research, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia,
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Tsiodras S, Papageorgiou S, Meletiadis J, Tofas P, Pappa V, Panayiotides J, Karakitsos P, Armaganidis A, Petrikkos G. Rhodotorula mucilaginosa associacted meningitis: A subacute entity with high mortality. Case report and review. Med Mycol Case Rep 2014; 6:46-50. [PMID: 25379400 PMCID: PMC4216385 DOI: 10.1016/j.mmcr.2014.08.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 08/29/2014] [Accepted: 08/29/2014] [Indexed: 10/25/2022] Open
Abstract
A fatal case of meningitis due to Rhodotorula mucilaginosa in a 28 year-old HIV-negative male with a history of Hodgkin lymphoma who underwent salvage chemotherapy is presented. Reviewing the literature we identified 13 cases with central nervous system infection due Rhodotorula spp. The disease usually occurs in HIV negative immunosupressed middle-aged males. It takes the form of subacute or chronic meningitis accompanied by fever with an overall mortality of 46.2% despite antifungal therapy.
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Affiliation(s)
- Sotirios Tsiodras
- 4th Department of Internal Medicine, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
| | - Sotirios Papageorgiou
- Haematology Unit, 2nd Department of Internal Medicine-Propaedeutic, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
| | - Joseph Meletiadis
- Clinical Microbiology Laboratory, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
| | - Polydoros Tofas
- 4th Department of Internal Medicine, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
| | - Vasiliki Pappa
- Haematology Unit, 2nd Department of Internal Medicine-Propaedeutic, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
| | - John Panayiotides
- 2nd Department of Pathology, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
| | - Petros Karakitsos
- Department of Cytopathology, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
| | - Apostolos Armaganidis
- 1st Department of Critical Care, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
| | - George Petrikkos
- 4th Department of Internal Medicine, "Attikon" University General Hospital, Medical School, National and Kapodistrian University of Athens, Rimini 1, 12462 Athens, Greece
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Capoor MR, Aggarwal S, Raghvan C, Gupta DK, Jain AK, Chaudhary R. Clinical and microbiological characteristics of Rhodotorula mucilaginosa infections in a tertiary-Care facility. Indian J Med Microbiol 2014; 32:304-9. [DOI: 10.4103/0255-0857.136576] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ghani NA, Sulaiman J, Ismail Z, Chan XY, Yin WF, Chan KG. Rhodotorula mucilaginosa, a quorum quenching yeast exhibiting lactonase activity isolated from a tropical shoreline. SENSORS 2014; 14:6463-73. [PMID: 24721765 PMCID: PMC4029656 DOI: 10.3390/s140406463] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2014] [Revised: 03/19/2014] [Accepted: 03/21/2014] [Indexed: 11/16/2022]
Abstract
Two microbial isolates from a Malaysian shoreline were found to be capable of degrading N-acylhomoserine lactones. Both Matrix Assisted Laser Desorption Ionization-Time of Flight-Mass Spectrometry and 18S rDNA phylogenetic analyses confirmed that these isolates are Rhodotorula mucilaginosa. Quorum quenching activities were detected by a series of bioassays and rapid resolution liquid chromatography analysis. The isolates were able to degrade various quorum sensing molecules namely N-hexanoyl-L-homoserine lactone (C6-HSL), N-(3-oxo-hexanoyl)-L-homoserine lactone (3-oxo-C6-HSL) and N-(3-hydroxyhexanoyl)-L-homoserine lactone (3-hydroxy-C6-HSL). Using a relactonisation assay to verify the quorum quenching mechanism, it is confirmed that Rh. mucilaginosa degrades the quorum sensing molecules via lactonase activity. To the best of our knowledge, this is the first documentation of the fact that Rh. mucilaginosa has activity against a broad range of AHLs namely C6-HSL, 3-oxo-C6-HSL and 3-hydroxy-C6-HSL.
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Affiliation(s)
- Norshazliza Ab Ghani
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Joanita Sulaiman
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Zahidah Ismail
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Xin-Yue Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
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Arendrup M, Boekhout T, Akova M, Meis J, Cornely O, Lortholary O. ESCMID† and ECMM‡ joint clinical guidelines for the diagnosis and management of rare invasive yeast infections. Clin Microbiol Infect 2014; 20 Suppl 3:76-98. [DOI: 10.1111/1469-0691.12360] [Citation(s) in RCA: 350] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 08/16/2013] [Accepted: 08/16/2013] [Indexed: 12/27/2022]
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13
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Menon S, Gupta HR, Sequeira R, Chavan S, Gholape D, Amandeep S, Bhilave N, Chowdhary AS. Rhodotorula glutinismeningitis: a case report and review of literature. Mycoses 2014; 57:447-51. [DOI: 10.1111/myc.12180] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Revised: 01/21/2014] [Accepted: 01/30/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Sarala Menon
- Department of Microbiology; Grant Government Medical College and Sir J J Hospital; Mumbai India
| | - H. R. Gupta
- Department of General Medicine; Grant Government Medical College and Sir J J Hospital; Mumbai India
| | - R. Sequeira
- Department of General Medicine; Grant Government Medical College and Sir J J Hospital; Mumbai India
| | - Shazia Chavan
- Department of Microbiology; Grant Government Medical College and Sir J J Hospital; Mumbai India
| | - D. Gholape
- Department of General Medicine; Grant Government Medical College and Sir J J Hospital; Mumbai India
| | - S. Amandeep
- Department of Microbiology; Grant Government Medical College and Sir J J Hospital; Mumbai India
| | - N. Bhilave
- Department of General Medicine; Grant Government Medical College and Sir J J Hospital; Mumbai India
| | - A. S. Chowdhary
- Department of Microbiology; Grant Government Medical College and Sir J J Hospital; Mumbai India
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Epidemiology of Rhodotorula: an emerging pathogen. Interdiscip Perspect Infect Dis 2012; 2012:465717. [PMID: 23091485 PMCID: PMC3469092 DOI: 10.1155/2012/465717] [Citation(s) in RCA: 149] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 09/07/2012] [Indexed: 11/17/2022] Open
Abstract
This is an updated paper focusing on the general epidemiological aspects of Rhodotorula in humans, animals, and the environment. Previously considered nonpathogenic, Rhodotorula species have emerged as opportunistic pathogens that have the ability to colonise and infect susceptible patients. Rhodotorula species are ubiquitous saprophytic yeasts that can be recovered from many environmental sources. Several authors describe the isolation of this fungus from different ecosystems, including sites with unfavourable conditions. Compared to R. mucilaginosa, R. glutinis and R. minuta are less frequently isolated from natural environments. Among the few references to the pathogenicity of Rhodotorula spp. in animals, there are several reports of an outbreak of skin infections in chickens and sea animals and lung infections and otitis in sheep and cattle. Most of the cases of infection due to Rhodotorula in humans were fungemia associated with central venous catheter (CVC) use. The most common underlying diseases included solid and haematologic malignancies in patients who were receiving corticosteroids and cytotoxic drugs, the presence of CVC, and the use of broad-spectrum antibiotics. Unlike fungemia, some of the other localised infections caused by Rhodotorula, including meningeal, skin, ocular, peritoneal, and prosthetic joint infections, are not necessarily linked to the use of CVCs or immunosuppression.
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Gouliamova D, Dimitrov R, Stoilova-Disheva M. DNA Barcoding of Yeasts from Selected Bulgarian Food Products. BIOTECHNOL BIOTEC EQ 2012. [DOI: 10.5504/50yrtimb.2011.0006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Al-Obaid I, Khan Z, Ahmad S, Emara M, Burhama M, Purohit P, Joseph L. Persistent catheter-related Rhodotorula mucilaginosa fungemia in a leukemic child. J Mycol Med 2011. [DOI: 10.1016/j.mycmed.2011.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Duggal S, Jain H, Tyagi A, Sharma A, Chugh TD. Rhodotorula fungemia: two cases and a brief review. Med Mycol 2011; 49:879-82. [PMID: 21595509 DOI: 10.3109/13693786.2011.583694] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Rhodotorula is emerging as an important cause of nosocomial and opportunistic infections. We present two cases of Rhodotorula mucilaginosa fungemia diagnosed over a period of 3 months at our hospital. The first case was of a pre-term neonate in the neonatal ICU who presented with respiratory failure and sepsis. The second involved an adult female who had been injured in a road traffic accident requiring an operation for a hematoma and was later shifted to the medical ICU. For a new hospital like ours, finding two cases of Rhodotorula fungemia within a span of 3 months prompted us to describe them in this report. These cases emphasize the emerging importance of Rhodotorula mucilaginosa as a pathogen and the importance of identification and MIC testing for all fungal isolates recovered from the blood stream.
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Affiliation(s)
- Shalini Duggal
- Department of Microbiology, Dr B L Kapur Memorial Hospital, Delhi, India.
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