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The Role of the Cutaneous Mycobiome in Atopic Dermatitis. J Fungi (Basel) 2022; 8:jof8111153. [DOI: 10.3390/jof8111153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/27/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
Atopic dermatitis is a chronic inflammatory skin disorder characterized by eczematous lesions, itch, and a significant deterioration in the quality of life. Recently, microbiome dysbiosis has been implicated in the pathogenesis of atopic dermatitis. Changes in the fungal microbiome (also termed mycobiome) appear to be an important factor influencing the clinical picture of this entity. This review summarizes the available insights into the role of the cutaneous mycobiome in atopic dermatitis and the new research possibilities in this field. The prevalence and characteristics of key fungal species, the most important pathogenesis pathways, as well as classic and emerging therapies of fungal dysbiosis and infections complicating atopic dermatitis, are presented.
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Alves PGV, de Paula Menezes R, de Oliveira Brito M, de Oliveira Faria G, Silva NBS, Cruvinel RS, Penatti MPA, Dos Santos Pedroso R, de Brito Röder DVD. Cryptococcus liquefaciens isolated from the hand of a healthcare professional in a neonatal intensive care unit. Braz J Microbiol 2021; 52:2085-2089. [PMID: 34545554 DOI: 10.1007/s42770-021-00601-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 08/27/2021] [Indexed: 11/30/2022] Open
Abstract
Fungal infections are responsible for high morbidity and mortality in neonatal patients, especially in premature newborns. Infections in neonates caused by Cryptococcus spp. are rare, but it has occurred in an immunocompromised population. This study aims to describe the isolation of Cryptococcus liquefaciens from the hands of a health professional in a neonatal intensive care unit, and to evaluate the production of biofilm and virulence factors and susceptibility to antifungals. Antifungal susceptibility tests were performed according to Clinical and Laboratory Standard Institute document M27-A3. Thermotolerance virulence factors and DNase, phospholipase, proteinase, and hemolytic activities were verified through phenotypic tests; biofilm was evaluated by determining the metabolic activity and biomass. The isolate did not produce any of the tested enzymes and was susceptible to all antifungals (amphotericin B, fluconazole, and micafungin). The growth at 37 °C was very weak; however, the isolate showed a strong biomass production and low metabolic activity. This is the first report of C. liquefaciens isolated from the hands of a health professional. The isolate did not express any of the studied virulence factors in vitro, except for the low growth at 37 °C in the first 48 h, and the strong production of biofilm biomass. Cryptococcus liquefaciens can remain in the environment for a long time and is a human pathogen because it tolerates temperature variations. This report draws attention to the circulation of rare species in critical locations, information that may help in a fast and correct diagnosis and, consequently, implementation of an appropriate treatment.
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Affiliation(s)
- Priscila Guerino Vilela Alves
- Faculty of Medicine, Federal University of Uberlândia, Umuarama Campus, 111 Ave. Amazonas, Uberlândia, Minas Gerais, CEP 38400-902, Brazil
| | | | | | - Gabriel de Oliveira Faria
- Faculty of Medicine, Federal University of Uberlândia, Umuarama Campus, 111 Ave. Amazonas, Uberlândia, Minas Gerais, CEP 38400-902, Brazil.,Nurse in Neonatology, Hospital Santa Clara, Uberlândia, Minas Gerais, Brazil
| | | | - Renner Soares Cruvinel
- Institute of Biology, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | | | - Reginaldo Dos Santos Pedroso
- Faculty of Medicine, Federal University of Uberlândia, Umuarama Campus, 111 Ave. Amazonas, Uberlândia, Minas Gerais, CEP 38400-902, Brazil. .,Technical School of Health, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil.
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Morales-López SE, Garcia-Effron G. Infections due to Rare Cryptococcus Species. A Literature Review. J Fungi (Basel) 2021; 7:jof7040279. [PMID: 33917243 PMCID: PMC8067992 DOI: 10.3390/jof7040279] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/30/2020] [Accepted: 01/07/2021] [Indexed: 12/23/2022] Open
Abstract
Infections due to rare Cryptococcus species (other than C. neoformans species complex, C. gattii species complex, C. albidus or C. laurentii) are barely reported. The aim of this work is to present a comprehensive literature review of all the papers describing infections due to these species referenced in the main databases (PubMed/MEDLINE, ScienceDirect, Scopus, and Google Scholar). Clinical and epidemiological data together with laboratory findings (identification and antifungal susceptibility) of each isolate were analyzed. Fifty-eight cryptococosis due to rare species were described in 46 papers between 1934-2018. These reports included 16 rare Cryptococcus spp. that were generally associated with nervous system infections and fungemias. Some species are non-capsulated and are not able to grow at 37 °C. Few species were identified by commercially available methods, making internal transcriber spacer (ITS) and D1/D2 regions sequencing mandatory. The most potent antifungal was amphotericin B (although some species showed high MIC values). The studied strains showed high MICs values to 5-fluorocytosine (all >64 µg/mL), echinocandins (all >8 µg/mL), and fluconazole (>80% of the MICs >4 µg/mL). Due to the scarcity of the data and the absence of guidelines for the treatment of these infections, this review could be informative and could help in the diagnosis and treatment of these infections.
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Affiliation(s)
- Soraya E. Morales-López
- Grupo CINBIOS, Programa de Microbiología, Universidad Popular del Cesar, Valledupar 200002, Colombia;
| | - Guillermo Garcia-Effron
- Laboratorio de Micología y Diagnóstico Molecular, Consejo Nacional de Investigaciones Científicas y Tecnológicas, Santa Fe 3000, Argentina
- Cátedra de Parasitología y Micología, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe 3000, Argentina
- Correspondence: ; Tel.: +54-0342-4575209
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Cano EJ, Yetmar ZA, Razonable RR. Cryptococcus Species Other Than Cryptococcus neoformans and Cryptococcus gattii: Are They Clinically Significant? Open Forum Infect Dis 2020; 7:ofaa527. [PMID: 33324722 PMCID: PMC7717158 DOI: 10.1093/ofid/ofaa527] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 10/22/2020] [Indexed: 11/13/2022] Open
Abstract
Background Cryptococcus spp is a major cause of opportunistic infections in immunocompromised patients, primarily due to Cryptococcus neoformans and Cryptococcus gattii. There are occasional reports of other Cryptococcus species causing invasive human disease. However, their epidemiology and clinical significance are not fully defined. We sought to describe cases with cultures positive for Cryptococcus species other than C neoformans and C gattii. Methods A retrospective descriptive analysis of clinical and laboratory data of patients with cultures growing Cryptococcus species other than C neoformans and C gattii from November 2011 to February 2019 was performed. Three Mayo Clinic sites in Arizona, Florida, and Minnesota were included. Results From 176 cases with a culture growing Cryptococcus spp, 54 patients (30%) had a culture for Cryptococcus other than C neoformans and C gattii in the study time frame. The most common species were Cryptococcus magnus, Cryptococcus laurentii, and Cryptococcus ater. The organisms were isolated and identified in culture of bronchoalveolar lavage (11), skin (11), urine (7), oral (4), sinus (3), intraoperative soft tissue (3), sputum (2), synovial fluid (2), cerebrospinal fluid (2), and intravenous catheter (2), among others (7). Only 8 (15%) cases were considered to be potentially pathogenic, with 1 case of invasive disease. Antifungal treatment was fluconazole, itraconazole, and griseofulvin, for a mean systemic antifungal duration of 42 days. Conclusions This large series of patients with Cryptococcus spp other than C neoformans and C gattii suggests that these species rarely cause clinically significant infection in humans. Only 1 case of invasive disease was found.
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Affiliation(s)
- Edison J Cano
- Division of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - Zachary A Yetmar
- Division of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, USA
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Liu T, Liu X, Zhu J, Tang Q, Wang W, Zhu L, Zhang Z, Zhang Z, Jiang L, Huang H. Characterization of Radiation-Resistant Yeast Isolated from Radiation-Polluted Areas and Its Potential Application in Bioremediation. APPL BIOCHEM MICRO+ 2020. [DOI: 10.1134/s0003683820050117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Azzam SZ, Cayme GJ, Martinez LR. Polymicrobial interactions involving fungi and their importance for the environment and in human disease. Microb Pathog 2019; 140:103942. [PMID: 31881258 DOI: 10.1016/j.micpath.2019.103942] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 01/08/2023]
Abstract
Understanding polymicrobial interactions involving fungi in the environment and the human mycobiome is necessary to address environmental and medically related problems such as drought or antimicrobial resistance. The diversity of these interactions highlights the complexity of fungi, considering how some interactions can be antagonistic, while others synergistic. Over the years, an increase in studies on the mycobiome have revealed similarities between the human and environmental hosts. More recently, studies have focused on microbial commensal relationships and identifying causative agents of human disease. The overlap of some of these interactions is impossible to ignore, indicating that there are areas for medical exploitation that need to be further investigated. This review provides the latest advances in polymicrobial interactions involving fungi and discusses the importance of the fungal lifestyle in the environment and in human disease.
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Affiliation(s)
- Seham Z Azzam
- Department of Biological Sciences, The Border Biomedical Research Center, University of Texas at El Paso, TX, USA
| | - Ginelle J Cayme
- Department of Biological Sciences, The Border Biomedical Research Center, University of Texas at El Paso, TX, USA
| | - Luis R Martinez
- Department of Biological Sciences, The Border Biomedical Research Center, University of Texas at El Paso, TX, USA; Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, FL, USA.
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Takemura H, Ohno H, Miura I, Takagi T, Ohyanagi T, Kunishima H, Okawara A, Miyazaki Y, Nakashima H. The first reported case of central venous catheter-related fungemia caused by Cryptococcus liquefaciens. J Infect Chemother 2014; 21:392-4. [PMID: 25499194 DOI: 10.1016/j.jiac.2014.11.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 10/26/2014] [Accepted: 11/07/2014] [Indexed: 11/27/2022]
Abstract
We describe a case of central venous catheter-related fungemia caused by Cryptococcus liquefaciens, a non-neoformans and non-gattii Cryptococcus, in a non-HIV patient. A 71-year-old man with diffuse large B-cell lymphoma receiving antineoplastic chemotherapy was febrile approximately 30 weeks after central venous port insertion, and C. liquefaciens was isolated from all three performed blood cultures as well as a central venous catheter tip culture. In vitro antifungal susceptibility tests showed that this yeast isolate was susceptible to low concentrations of amphotericin B, fluconazole, itraconazole and voriconazole yet was resistant to 5-fluorocytosine (MIC: >64 μg/ml), unlike Cryptococcus neoformans. Treatment of the patient with oral and intravenous voriconazole was effective and consistent with the susceptibility tests. Although non-neoformans and non-gattii Cryptococcus spp. are considered non-pathogenic environmental yeast, they may rarely be the causative agents of serious infections in humans, as in the present case.
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Affiliation(s)
- Hiromu Takemura
- Department of Microbiology, St. Marianna University School of Medicine, Japan; Department of Infection Control, St. Marianna University Hospital, Japan.
| | - Hideaki Ohno
- Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Japan; Department of Infectious Diseases and Infection Control, Saitama Medical Center, Saitama Medical University, Japan
| | - Ikuo Miura
- Division of Hematology and Oncology, Department of Internal Medicine, St. Marianna University School of Medicine, Japan
| | - Taeko Takagi
- Department of Infection Control, St. Marianna University Hospital, Japan
| | - Tadatomo Ohyanagi
- Department of Infection Control, St. Marianna University Hospital, Japan; Department of Clinical Laboratory, St. Marianna University Hospital, Japan
| | - Hiroyuki Kunishima
- Department of Infection Control, St. Marianna University Hospital, Japan; Division of General Internal Medicine, Department of Internal Medicine, St. Marianna University School of Medicine, Japan
| | - Akiko Okawara
- Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Japan
| | - Yoshitsugu Miyazaki
- Department of Chemotherapy and Mycoses, National Institute of Infectious Diseases, Japan
| | - Hideki Nakashima
- Department of Microbiology, St. Marianna University School of Medicine, Japan
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Jagielski T, Rup E, Ziółkowska A, Roeske K, Macura AB, Bielecki J. Distribution of Malassezia species on the skin of patients with atopic dermatitis, psoriasis, and healthy volunteers assessed by conventional and molecular identification methods. BMC DERMATOLOGY 2014; 14:3. [PMID: 24602368 PMCID: PMC3975586 DOI: 10.1186/1471-5945-14-3] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 03/01/2014] [Indexed: 01/14/2023]
Abstract
Background The Malassezia yeasts which belong to the physiological microflora of human skin have also been implicated in several dermatological disorders, including pityriasis versicolor (PV), atopic dermatitis (AD), and psoriasis (PS). The Malassezia genus has repeatedly been revised and it now accommodates 14 species, all but one being lipid-dependent species. The traditional, phenotype-based identification schemes of Malassezia species are fraught with interpretative ambiguities and inconsistencies, and are thus increasingly being supplemented or replaced by DNA typing methods. The aim of this study was to explore the species composition of Malassezia microflora on the skin of healthy volunteers and patients with AD and PS. Methods Species characterization was performed by conventional, culture-based methods and subsequently molecular techniques: PCR-RFLP and sequencing of the internal transcribed spacer (ITS) 1/2 regions and the D1/D2 domains of the 26S rRNA gene. The Chi-square test and Fisher’s exact test were used for statistical analysis. Results Malassezia sympodialis was the predominant species, having been cultured from 29 (82.9%) skin samples collected from 17 out of 18 subjects under the study. Whereas AD patients yielded exclusively M. sympodialis isolates, M. furfur isolates were observed only in PS patients. The isolation of M. sympodialis was statistically more frequent among AD patients and healthy volunteers than among PS patients (P < 0.03). Whether this mirrors any predilection of particular Malassezia species for certain clinical conditions needs to be further evaluated. The overall concordance between phenotypic and molecular methods was quite high (65%), with the discordant results being rather due to the presence of multiple species in a single culture (co-colonization) than true misidentification. All Malassezia isolates were susceptible to cyclopiroxolamine and azole drugs, with M. furfur isolates being somewhat more drug tolerant than other Malassezia species. Conclusions This study provides an important insight into the species composition of Malassezia microbiota in human skin. The predominance of M. sympodialis in both normal and pathologic skin, contrasts with other European countries, reporting M. globosa and M. restricta as the most frequently isolated Malassezia species.
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Affiliation(s)
- Tomasz Jagielski
- Department of Applied Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw, I, Miecznikowa 1, 02-096 Warsaw, Poland.
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Kato H, Sugita T, Ishibashi Y, Nishikawa A. Evaluation of the Levels of Specific IgE againstCryptococcus diffluensandCryptococcus liquefaciensin Patients with Atopic Dermatitis. Microbiol Immunol 2013; 51:945-50. [DOI: 10.1111/j.1348-0421.2007.tb03991.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroshi Kato
- Departments of Immunobiology; Meiji Pharmaceutical University; Kiyose Tokyo 204-8588 Japan
| | - Takashi Sugita
- Departments of Microbiology; Meiji Pharmaceutical University; Kiyose Tokyo 204-8588 Japan
| | - Yoshio Ishibashi
- Departments of Immunobiology; Meiji Pharmaceutical University; Kiyose Tokyo 204-8588 Japan
| | - Akemi Nishikawa
- Departments of Immunobiology; Meiji Pharmaceutical University; Kiyose Tokyo 204-8588 Japan
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Zhang E, Tajima M, Tsuboi R, Sugita T. Sequence diversity of the intergenic spacer region of the rRNA gene of Cryptococcus albidus isolated from the skin of patients with atopic dermatitis and healthy individuals. Microbiol Immunol 2012; 57:74-6. [PMID: 23140516 DOI: 10.1111/1348-0421.12003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 10/24/2012] [Accepted: 11/04/2012] [Indexed: 11/29/2022]
Abstract
The yeast species Cryptococcus albidus var. albidus was found to more often colonize the skin surface of patients with atopic dermatitis (77.0%, 47/61) than that of healthy subjects (37.5%, 15/40). The intergenic spacer 1 region of the rRNA gene of this species consists of four sequence types: I, II, III and IV. Types I and II were predominant among healthy subjects and atopic dermatitis patients, respectively.
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Affiliation(s)
- Enshi Zhang
- Department of Microbiology, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
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Zhang E, Tanaka T, Tajima M, Tsuboi R, Nishikawa A, Sugita T. Characterization of the skin fungal microbiota in patients with atopic dermatitis and in healthy subjects. Microbiol Immunol 2012; 55:625-32. [PMID: 21699559 DOI: 10.1111/j.1348-0421.2011.00364.x] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Patients with atopic dermatitis (AD) are highly susceptible to viral, bacterial, and fungal skin infections because their skin is dry and this compromises the barrier function of the skin. Therefore, the skin microbiota of patients with AD is believed to be different from that of healthy individuals. In the present study, the skin fungal microbiota of nine patients with mild, moderate, or severe AD and ten healthy subjects were compared using an rRNA clone library. Fungal D1/D2 large subunit analysis of 3647 clones identified 58 species and seven unknown phylotypes in face scale samples from patients with AD and healthy subjects. Malassezia species were predominant, accounting for 63%-86% of the clones identified from each subject. Overall, the non-Malassezia yeast microbiota of the patients was more diverse than that of the healthy individuals. In the AD samples 13.0 ± 3.0 species per case were detected, as compared to 8.0 ± 1.9 species per case in the samples taken from healthy individuals. Notably, Candida albicans, Cryptococcus diffluens, and Cryptococcus liquefaciens were detected in the samples from the patients with AD. Of the filamentous fungal microbiota, Cladosporium spp. and Toxicocladosporium irritans were the predominant species in these patients. Many pathogenic fungi, including Meyerozyma guilliermondii (anamorphic name, Candida guilliermondii), and Trichosporon asahii, and allergenic microorganisms such as Alternaria alternata and Aureobasidium pullulans were found on the skin of the healthy subjects. When the fungal microbiota of the samples from patients with mild/moderate to severe AD and healthy individuals were clustered together by principal coordinates analysis they were found to be clustered according to health status.
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Affiliation(s)
- Enshi Zhang
- Department of Microbiology Department of Immunobiology, Meiji Pharmaceutical University, Kiyose, Japan
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Bai M, Qing M, Guo Z, Zhang Y, Chen X, Bao Q, Zhang H, Sun TS. Occurrence and dominance of yeast species in naturally fermented milk from the Tibetan Plateau of China. Can J Microbiol 2010; 56:707-14. [DOI: 10.1139/w10-056] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To determine which yeasts are present in the naturally fermented milks of China, 69 samples made by the nomads of Tibet were collected from the Tibetan Plateau in China. From these samples, 225 strains of yeast were isolated and identified using conventional microbiological analysis and gene sequencing analysis of the D1/D2 domain of the large subunit (26S) ribosomal DNA. The results showed that the total concentration of yeasts in these samples ranged from 5.01 to 8.97 log10 colony-forming units (CFU)/mL (6.91 ± 1.02 log10 CFU/mL; mean ± SD). The number of cultivable yeasts was higher in the samples from Qinghai (7.55 ± 0.75 log10 CFU/mL) than those from Tibet (6.21 ± 0.79 log10 CFU/mL, P < 0.05). Moreover, there were 15 phylotypes in these 69 samples. Among these phylotypes, Kluyveromyces marxianus (49.3%, frequency percentage), Saccharomyces cerevisiae (62.3%), and Pichia fermentans (46.4%) appeared frequently and can be considered the most common culturable species in naturally fermented milk products. Traditional fermented Mongolian cow milk featured a wide diversity of yeast species, including Issatchenkia orientalis , Kazachstania unisporus , Rhodotorula mucilaginosa , Candida pararugosa , Torulaspora delbrueckii , Geotrichum sp., Kazachstania unisporus , Geotrichum fragrans , Debaryomyces hansenii , Yarrowia lipolytica , Trichosporon gracile , and Pichia membranifaciens . This study provides new data on yeast composition in naturally fermented milk and shows the yeast biodiversity of fermented milk products from the Tibetan Plateau of China.
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Affiliation(s)
- Mei Bai
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Huhhot, Inner Mongolia 010018, P.R. China
| | - Manjun Qing
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Huhhot, Inner Mongolia 010018, P.R. China
| | - Zhuang Guo
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Huhhot, Inner Mongolia 010018, P.R. China
| | - Yong Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Huhhot, Inner Mongolia 010018, P.R. China
| | - Xia Chen
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Huhhot, Inner Mongolia 010018, P.R. China
| | - Qiuhua Bao
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Huhhot, Inner Mongolia 010018, P.R. China
| | - Heping Zhang
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Huhhot, Inner Mongolia 010018, P.R. China
| | - Tian-song Sun
- Key Laboratory of Dairy Biotechnology and Engineering, Ministry of Education, Inner Mongolia Agricultural University, 306 Zhaowuda Road, Huhhot, Inner Mongolia 010018, P.R. China
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Fuglseth E, Otterholt E, Høgmoen H, Sundby E, Charnock C, Hoff BH. Chiral derivatives of Butenafine and Terbinafine: synthesis and antifungal activity. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.067] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Diversity of lactic acid bacteria and yeasts in Airag and Tarag, traditional fermented milk products of Mongolia. World J Microbiol Biotechnol 2007. [DOI: 10.1007/s11274-007-9604-3] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Roll A, Cozzio A, Fischer B, Schmid-Grendelmeier P. Microbial colonization and atopic dermatitis. Curr Opin Allergy Clin Immunol 2004; 4:373-8. [PMID: 15349036 DOI: 10.1097/00130832-200410000-00008] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Atopic dermatitis is a chronic relapsing, pruritic inflammation of the skin, affecting 10-20% of children and 1-3% adults worldwide, with increasing prevalence in highly industrialized countries. Here we review relevant studies, published since June 2002, about immunological triggers in atopic dermatitis, with emphasis on the role of microbial colonization. RECENT FINDINGS During the past 2 years there has been considerable interest in the mechanisms and trigger factors underlying the increased microbial colonization of atopic skin. Staphylococcus aureus appears to play a significant role as it leads to a worsening of disease severity by producing superantigens that induce a strong proliferation of T cells and favour a T helper type 2-like cytokine profile. In addition, different Malassezia species seem to elicit and maintain skin inflammation after sensitization, but the precise immunological pathway has not yet been described. All these microorganisms are not only perceived as aetiological factors but also as agents responsible either for sustained disease activity or resistance to therapy by modulation of the immune response. SUMMARY New insights into the important role of microorganisms and their key immunomodulatory pathways in atopic dermatitis may have important implications from a therapeutic point of view because patients with atopic dermatitis may benefit from more than just anti-inflammatory treatment in the future.
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Affiliation(s)
- Antonie Roll
- Allergy Unit, Department of Dermatology, University Hospital, Zurich, Switzerland
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