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Wound Infection with an Unusual Pathogen after Liver Transplantation. Case Rep Transplant 2020; 2020:8396507. [PMID: 32309007 PMCID: PMC7154978 DOI: 10.1155/2020/8396507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 02/15/2020] [Accepted: 03/21/2020] [Indexed: 11/23/2022] Open
Abstract
Mucormycosis is a rare and highly invasive fungal infection caused by Mucorales fungi of the class Zygomycetes. Cutaneous mucormycosis typically has a good survival rate when diagnosed early. In this report, we presented a patient with surgical site mucormycosis after liver transplant surgery. Our patient was a 50-year-old man with cirrhosis due to nonalcoholic steatohepatitis who received liver transplant from a deceased donor. On the 8th day of transplant, the patient had fever and purulent discharge from the surgical site. The wound became black and necrotic in the next day. A microbiologic study showed mycelium in wound culture. The smear of the discharge was positive for aseptate hyphae, and the report of fungal culture revealed Rhizopus sp. In the histopathologic examination, mucormycosis was confirmed. The combination of antifungal and surgical debridement was a successful treatment in this case. Cutaneous fungal infections should be considered in the differential diagnosis of any nonhealing or black scar-infected wound that does not respond to broad-spectrum antibiotics.
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Xu W, Peng J, Li D, Tsui CKM, Long Z, Wang Q, Mei H, Liu W. Transcriptional profile of the human skin pathogenic fungus Mucor irregularis in response to low oxygen. Med Mycol 2018; 56:631-644. [PMID: 29420826 DOI: 10.1093/mmy/myx081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Accepted: 08/25/2017] [Indexed: 12/11/2022] Open
Abstract
Mucormycosis is one of the most invasive mycosis and has caused global concern in public health. Cutaneous mucormycosis caused by Mucor irregularis (formerly Rhizomucor variabilis) is an emerging disease in China. To survive in the human body, M. irregularis must overcome the hypoxic (low oxygen) host microenvironment. However, the exact molecular mechanism of its pathogenicity and adaptation to low oxygen stress environment is relatively unexplored. In this study, we used Illumina HiSeq technology (RNA-Seq) to determine and compare the transcriptome profile of M. irregularis CBS103.93 under normal growth condition and hypoxic stress. Our analyses demonstrated a series of genes involved in TCA, glyoxylate cycle, pentose phosphate pathway, and GABA shunt were down-regulated under hypoxic condition, while certain genes in the lipid/fatty acid metabolism and endocytosis were up-regulated, indicating that lipid metabolism was more active under hypoxia. Comparing the data with other important human pathogenic fungi such as Aspergillus spp., we found that the gene expression pattern and metabolism in responses to hypoxia in M. irregularis were unique and different. We proposed that these metabolic changes can represent a species-specific hypoxic adaptation in M. irregularis, and we hypothesized that M. irregularis could use the intra-lipid pool and lipid secreted in the infection region, as an extracellular nutrient source to support its hypoxic growth. Characterizing the significant differential gene expression in this species could be beneficial to uncover their role in hypoxia adaptation and fungalpathogenesis and further facilitate the development of novel targets in disease diagnosis and treatment against mucormycosis.
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Affiliation(s)
- Wenqi Xu
- Department of Mycology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, Jiangsu, People's Republic of China
| | - Jingwen Peng
- Department of Mycology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, Jiangsu, People's Republic of China
| | - Dongmei Li
- Department of Microbiology and Immunology, Georgetown University Medical Center, Washington, DC 20057, USA
| | - Clement K M Tsui
- Division of Infectious Diseases, Faculty of Medicine, University of British Columbia, Vancouver, BC V6H 3Z6, Canada
| | - Zhimin Long
- Demo Lab, Shanghai AB Sciex Analytical Instrument Trading Co., Ltd, IBP, Shanghai, 200335, People's Republic of China
| | - Qiong Wang
- Department of Mycology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, Jiangsu, People's Republic of China
| | - Huan Mei
- Department of Mycology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, Jiangsu, People's Republic of China
| | - Weida Liu
- Department of Mycology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, Jiangsu, People's Republic of China
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Wijayawardene NN, Pawłowska J, Letcher PM, Kirk PM, Humber RA, Schüßler A, Wrzosek M, Muszewska A, Okrasińska A, Istel Ł, Gęsiorska A, Mungai P, Lateef AA, Rajeshkumar KC, Singh RV, Radek R, Walther G, Wagner L, Walker C, Wijesundara DSA, Papizadeh M, Dolatabadi S, Shenoy BD, Tokarev YS, Lumyong S, Hyde KD. Notes for genera: basal clades of Fungi (including Aphelidiomycota, Basidiobolomycota, Blastocladiomycota, Calcarisporiellomycota, Caulochytriomycota, Chytridiomycota, Entomophthoromycota, Glomeromycota, Kickxellomycota, Monoblepharomycota, Mortierellomycota, Mucoromycota, Neocallimastigomycota, Olpidiomycota, Rozellomycota and Zoopagomycota). FUNGAL DIVERS 2018. [DOI: 10.1007/s13225-018-0409-5] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Successful Treatment of Cutaneous Mucormycosis in a Leukemic Patient. INFECTIOUS DISEASES IN CLINICAL PRACTICE 2015. [DOI: 10.1097/ipc.0000000000000227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Primary Cutaneous Mucormycosis in a Patient with Burn Wounds Due to Lichtheimia ramosa. Mycopathologia 2014; 178:291-5. [DOI: 10.1007/s11046-014-9805-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 08/20/2014] [Indexed: 02/07/2023]
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Binder U, Maurer E, Lass-Flörl C. Mucormycosis – from the pathogens to the disease. Clin Microbiol Infect 2014; 20 Suppl 6:60-6. [DOI: 10.1111/1469-0691.12566] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bibashi E, de Hoog GS, Pavlidis TE, Symeonidis N, Sakantamis A, Walther G. Wound infection caused by Lichtheimia ramosa due to a car accident. Med Mycol Case Rep 2012; 2:7-10. [PMID: 24432204 PMCID: PMC3885937 DOI: 10.1016/j.mmcr.2012.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 12/04/2012] [Indexed: 02/05/2023] Open
Abstract
A 32-year-old immunocompetent man sustained severe traumas contaminated with organic material due to a car accident. An infection caused by Lichtheimia ramosa at the site of contamination was early diagnosed and cured by multiple surgical debridement and daily cleansing with antiseptic solution only.
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Affiliation(s)
- Evangelia Bibashi
- Department of Microbiology, Hippokration General Hospital, 49, Konstantinoupoleos Str., GR-546 42 Thessaloniki, Greece
| | - G. Sybren de Hoog
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Theodoros E. Pavlidis
- 2 Propedeutical Surgical Department, Medical School, Aristotle University of Thessaloniki, Hippokration General Hospital, 49, Konstantinoupoleos Str., GR-546 42 Thessaloniki, Greece
| | - Nikolaos Symeonidis
- 2 Propedeutical Surgical Department, Medical School, Aristotle University of Thessaloniki, Hippokration General Hospital, 49, Konstantinoupoleos Str., GR-546 42 Thessaloniki, Greece
| | - Athanasios Sakantamis
- 2 Propedeutical Surgical Department, Medical School, Aristotle University of Thessaloniki, Hippokration General Hospital, 49, Konstantinoupoleos Str., GR-546 42 Thessaloniki, Greece
| | - Grit Walther
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
- Corresponding author. Tel.: +49 3641 5321038; fax: +49 3641 5320803.
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