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Liu F, Zeng M, Zhou X, Huang F, Song Z. Aspergillus fumigatus escape mechanisms from its harsh survival environments. Appl Microbiol Biotechnol 2024; 108:53. [PMID: 38175242 DOI: 10.1007/s00253-023-12952-z] [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: 08/15/2023] [Revised: 10/09/2023] [Accepted: 10/19/2023] [Indexed: 01/05/2024]
Abstract
Aspergillus fumigatus is a ubiquitous pathogenic mold and causes several diseases, including mycotoxicosis, allergic reactions, and systemic diseases (invasive aspergillosis), with high mortality rates. In its ecological niche, the fungus has evolved and mastered many reply strategies to resist and survive against negative threats, including harsh environmental stress and deficiency of essential nutrients from natural environments, immunity responses and drug treatments in host, and competition from symbiotic microorganisms. Hence, treating A. fumigatus infection is a growing challenge. In this review, we summarized A. fumigatus reply strategies and escape mechanisms and clarified the main competitive or symbiotic relationships between A. fumigatus, viruses, bacteria, or fungi in host microecology. Additionally, we discussed the contemporary drug repertoire used to treat A. fumigatus and the latest evidence of potential resistance mechanisms. This review provides valuable knowledge which will stimulate further investigations and clinical applications for treating and preventing A. fumigatus infections. KEY POINTS: • Harsh living environment was a great challenge for A. fumigatus survival. • A. fumigatus has evolved multiple strategies to escape host immune responses. • A. fumigatus withstands antifungal drugs via intrinsic escape mechanisms.
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Affiliation(s)
- Fangyan Liu
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Meng Zeng
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
- Department of Clinical Laboratory, Yongchuan Hospital of Chongqing Medical University, Chongqing, 402160, People's Republic of China
| | - Xue Zhou
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Fujiao Huang
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Zhangyong Song
- School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, People's Republic of China.
- Molecular Biotechnology Platform, Public Center of Experimental Technology, Southwest Medical University, Luzhou, 646000, People's Republic of China.
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2
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Poore TS, Zemanick ET. Infection, Allergy, and Inflammation: The Role of Aspergillus fumigatus in Cystic Fibrosis. Microorganisms 2023; 11:2013. [PMID: 37630573 PMCID: PMC10458351 DOI: 10.3390/microorganisms11082013] [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: 06/28/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
Aspergillus fumigatus (Af) is a mold frequently detected in airway samples from people with cystic fibrosis (pwCF). Abnormal airway mucus may allow Af to germinate, resulting in airway infection or an allergic response. While Af is known to increase morbidity in pwCF, individual responses and the degree of impact on lung disease vary. Improved approaches to diagnosis, treatment, and prevention of Af, particularly the persistent Af infection, are needed. This update highlights our current understanding of Af pathophysiology in the CF airway, the effects of Af on pwCF, and areas of research needed to improve clinical outcomes.
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Affiliation(s)
- T. Spencer Poore
- Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL 35223, USA
- UAB Gregory Fleming James Cystic Fibrosis Research Center, Birmingham, AL 35223, USA
| | - Edith T. Zemanick
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
- Breathing Institute, Children’s Hospital Colorado, Aurora, CO 80045, USA
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3
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Melenotte C, Aimanianda V, Slavin M, Aguado JM, Armstrong-James D, Chen YC, Husain S, Van Delden C, Saliba F, Lefort A, Botterel F, Lortholary O. Invasive aspergillosis in liver transplant recipients. Transpl Infect Dis 2023:e14049. [PMID: 36929539 DOI: 10.1111/tid.14049] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 02/03/2023] [Accepted: 02/09/2023] [Indexed: 03/18/2023]
Abstract
BACKGROUND Liver transplantation is increasing worldwide with underlying pathologies dominated by metabolic and alcoholic diseases in developed countries. METHODS We provide a narrative review of invasive aspergillosis (IA) in liver transplant (LT) recipients. We searched PubMed and Google Scholar for references without language and time restrictions. RESULTS The incidence of IA in LT recipients is low (1.8%), while mortality is high (∼50%). It occurs mainly early (<3 months) after LT. Some risk factors have been identified before (corticosteroid, renal, and liver failure), during (massive transfusion and duration of surgical procedure), and after transplantation (intensive care unit stay, re-transplantation, re-operation). Diagnosis can be difficult and therefore requires full radiological and clinicobiological collaboration. Accurate identification of Aspergillus species is recommended due to the cryptic species, and susceptibility testing is crucial given the increasing resistance of Aspergillus fumigatus to azoles. It is recommended to reduce the dose of tacrolimus (50%) and to closely monitor the trough level when introducing voriconazole, isavuconazole, and posaconazole. Surgery should be discussed on a case-by-case basis. Antifungal prophylaxis is recommended in high-risk patients. Environmental preventative measures should be implemented to prevent outbreaks of nosocomial aspergillosis in LT recipient units. CONCLUSION IA remains a very serious disease in LT patients and should be promptly sought and, if possible, prevented by clinicians when risk factors are identified.
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Affiliation(s)
- Cléa Melenotte
- Service de Maladies Infectieuses et Tropicales, Hôpital Necker Enfants-Malades, AP-HP, Paris, France.,Faculté de Médecine, Université Paris-Cité, Paris, France
| | - Vishukumar Aimanianda
- Institut Pasteur, CNRS, National Reference Center for Invasive Mycoses and Antifungals, Molecular Mycology Unit, UMR2000, Paris, France
| | - Monica Slavin
- Department of Infectious Diseases, National Center for Infections in Cancer, Sir Peter MacCallum Cancer Centre, Melbourne, Australia.,Department of Oncology, Sir Peter MacCallum Cancer Center, University of Melbourne, Melbourne, Australia
| | - José María Aguado
- Unit of Infectious Diseases, Hospital Universitario "12 de Octubre", Instituto de Investigación Sanitaria Hospital 12 de Octubre (imas12), Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Infecciosas, Instituto de Salud Carlos III, Madrid, Spain.,Department of Medicine, Universidad Complutense, Madrid, Spain
| | | | - Yee-Chun Chen
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, Taipei, Taiwan
| | - Shahid Husain
- Department of Transplant Infectious Diseases, Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada
| | - Christian Van Delden
- Transplant Infectious Diseases Unit, University Hospitals Geneva, Geneva, Switzerland
| | - Faouzi Saliba
- AP-HP Hôpital Paul Brousse, Centre Hépato-Biliaire, Villejuif, France
| | - Agnès Lefort
- Université de Paris, IAME, UMR 1137, INSERM, Paris, France.,Service de Médecine Interne, Hôpital Beaujon, AP-HP, Clichy, France
| | - Francoise Botterel
- EA Dynamyc 7380 UPEC, ENVA, Faculté de Médecine, Créteil, France.,Unité de Parasitologie-Mycologie, Département de Virologie, Bactériologie-Hygiène, Mycologie-Parasitologie, DHU VIC, CHU Henri Mondor, Créteil, France
| | - Olivier Lortholary
- Service de Maladies Infectieuses et Tropicales, Hôpital Necker Enfants-Malades, AP-HP, Paris, France.,Faculté de Médecine, Université Paris-Cité, Paris, France.,Institut Pasteur, CNRS, National Reference Center for Invasive Mycoses and Antifungals, Molecular Mycology Unit, UMR2000, Paris, France.,Paris University, Necker-Pasteur Center for Infectious Diseases and Tropical Medicine, Necker-Enfants Malades Hospital, AP-HP, IHU Imagine, Paris, France
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4
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Wang Y, Wang Y, Rong H, Guo Z, Xu J, Huang X. Risk factors of lower respiratory tract infection caused by Stenotrophomonas maltophilia: Systematic review and meta-analysis. Front Public Health 2023; 10:1035812. [PMID: 36703851 PMCID: PMC9871542 DOI: 10.3389/fpubh.2022.1035812] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 12/23/2022] [Indexed: 01/12/2023] Open
Abstract
Objective To systematically evaluate the risk factors of lower respiratory tract infection caused by Stenotrophomonas maltophilia for better clinical treatment. Methods PubMed, Embase, the Cochrane Library, Web of Science, China Journal full-text Database (CNKI), Wanfang Database (WanFang Data), VIP (VIP), and China Biomedical Literature Database (CBM) were selected and published by June 2022 about the risk factors of lower respiratory tract infection of S. maltophilia. Two researchers independently screened the literature, extracted data, and quality evaluation according to the inclusion and exclusion criteria. RevMan 5.4 software was used for meta-analysis. Results A total of 18 articles were included, including 10 in English and 8 in Chinese. Meta analysis showed that the risk factors of lower respiratory tract infection caused by S. maltophilia included disease severity, hospitalization days, use of glucocorticoids, invasive procedures, use of broad-spectrum antibiotics and use of more than 3 Antibiotics. The OR values of patients with hospitalization, mechanical ventilation, use of more than 3 Antibiotics, endotracheal intubation and tracheotomy were the highest. Specific hospitalization days (OR = 14.56, 95% CI: 6.12~23.01), mechanical ventilation (OR = 14.16, 95% CI: 5.85~34.3), use of more than 3 Antibiotics (OR = 6.21, 95% CI: 1.24~31.14), tracheal intubation (OR = 6.07, 95% CI: 1.97~3.64), tracheotomy (OR = 3.77, 95% CI: 1.09~13.04). Conclusion There are many risk factors for lower respiratory tract infection of S. maltophilia, which can occur in patients with severe illness, high APACHE-II score, invasive procedures, and the need for broad-spectrum antibiotics. In terms of the host, these patients are characterized by impaired immune function, severe illness and long-term hospitalization, which objectively leads to the infection of S. maltophilia. Therefore, strengthening the monitoring, prevention and control of patients with risk factors of S. maltophilia infection is conducive to reducing the risk of infection and death.
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Affiliation(s)
- Yiwei Wang
- Department of Infectious Diseases, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Yizhi Wang
- College of Medicine, Institute of Pharmaceutical Innovation, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Hechen Rong
- Department of Infectious Diseases, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Zhonghong Guo
- Department of Infectious Diseases, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Jie Xu
- Center for Clinical Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China,Jie Xu ✉
| | - Xiaoping Huang
- Department of Infectious Diseases, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China,*Correspondence: Xiaoping Huang ✉
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5
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Alexandrova LA, Shevchenko OV, Jasko MV, Solyev PN, Karpenko IL, Negrya SD, Efremenkova OV, Vasilieva BF, Efimenko TA, Avdanina DA, Nuraeva GK, Potapov MP, Kukushkina VI, Kochetkov SN, Zhgun AA. 3′-Amino modifications enhance the antifungal properties of N4-alkyl-5-methylcytidines for potential biocides. NEW J CHEM 2022. [DOI: 10.1039/d1nj04312a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A set of 3′-modified N4-alkyl-5-methyl-2′-deoxycytidines has been synthesized and evaluated for biological activity. The replacement of the 3′-hydroxyl group with amino, aminoethyl and dialkylamino groups significantly enhances antifungal activity.
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Affiliation(s)
| | - Oleg V. Shevchenko
- Engelhardt Institute of Molecular Biology RAS, 32 Vavilova St., 119991 Moscow, Russia
| | - Maxim V. Jasko
- Engelhardt Institute of Molecular Biology RAS, 32 Vavilova St., 119991 Moscow, Russia
| | - Pavel N. Solyev
- Engelhardt Institute of Molecular Biology RAS, 32 Vavilova St., 119991 Moscow, Russia
| | - Inna L. Karpenko
- Engelhardt Institute of Molecular Biology RAS, 32 Vavilova St., 119991 Moscow, Russia
| | - Sergey D. Negrya
- Engelhardt Institute of Molecular Biology RAS, 32 Vavilova St., 119991 Moscow, Russia
| | - Olga V. Efremenkova
- Gause Institute of New Antibiotics, 11 Bol'shaya Pirogovskaya St., 119021 Moscow, Russia
| | - Byazilya F. Vasilieva
- Gause Institute of New Antibiotics, 11 Bol'shaya Pirogovskaya St., 119021 Moscow, Russia
| | - Tatiana A. Efimenko
- Gause Institute of New Antibiotics, 11 Bol'shaya Pirogovskaya St., 119021 Moscow, Russia
| | - Darya A. Avdanina
- Research Center of Biotechnology RAS, 33 Leninsky Ave, 119071 Moscow, Russia
| | - Gulgina K. Nuraeva
- Research Center of Biotechnology RAS, 33 Leninsky Ave, 119071 Moscow, Russia
| | - Mark P. Potapov
- Research Center of Biotechnology RAS, 33 Leninsky Ave, 119071 Moscow, Russia
| | - Vera I. Kukushkina
- Research Center of Biotechnology RAS, 33 Leninsky Ave, 119071 Moscow, Russia
| | - Sergey N. Kochetkov
- Engelhardt Institute of Molecular Biology RAS, 32 Vavilova St., 119991 Moscow, Russia
| | - Alexander A. Zhgun
- Research Center of Biotechnology RAS, 33 Leninsky Ave, 119071 Moscow, Russia
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6
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Poore TS, Meier M, Towler E, Martiniano SL, Brinton JT, DeBoer EM, Sagel SD, Wagner BD, Zemanick ET. Clinical characteristics of people with cystic fibrosis and frequent fungal infection. Pediatr Pulmonol 2022; 57:152-161. [PMID: 34687280 PMCID: PMC8665034 DOI: 10.1002/ppul.25741] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/30/2021] [Accepted: 10/19/2021] [Indexed: 01/16/2023]
Abstract
BACKGROUND Individuals with cystic fibrosis (CF) and fungal airway infection may present with fungal bronchitis, allergic bronchopulmonary aspergillosis (ABPA) or may appear unaffected despite fungal detection. We sought to characterize people with CF with frequent detection of fungi from airway samples and determine clinical outcomes. METHODS This retrospective study included individuals with CF with ≥4 lower airway cultures over a 2-year baseline period and ≥2 years of follow-up. We defined two groups: ≤1 positive fungus culture (rare) or ≥2 positive cultures during baseline (frequent). Clinical characteristics and outcomes were determined. RESULTS Between 2004 and 2016, 294 individuals met inclusion with 62% classified as rare and 38% as frequent fungi during baseline. Median follow-up was 6 years (range: 2-9 years). Aspergillus fumigatus was the most common fungal species detected. Individuals with frequent fungi were older (13.7 vs. 11.7 years, p = .02) and more likely to have Stenotrophomonas maltophilia (35% vs. 17%, p < .001) at baseline, but did not differ in lung function or ABPA diagnosis. During follow-up, those with frequent fungi were more likely to have chronic Pseudomonas aeruginosa and S. maltophilia. Individuals with ABPA and frequent fungi had the highest rates of co-infection and co-morbidities, and a trend towards more rapid lung function decline. DISCUSSION Fungal infection in CF was associated with frequent P. aeruginosa and S. maltophilia co-infection even in those without ABPA. Individuals with frequent fungi and ABPA had worse outcomes, highlighting the potential contribution of fungi to CF pulmonary disease.
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Affiliation(s)
- T. Spencer Poore
- Division of Pulmonary and Sleep Medicine, Department of PediatricsUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Maxene Meier
- Department of Biostatistics and InformaticsAnschutz Medical Campus, University of ColoradoAuroraColoradoUSA
| | - Elinor Towler
- Section of Pediatric Pulmonary and Sleep Medicine and Children's Hospital Colorado, Department of PediatricsAnschutz Medical Campus, University of ColoradoAuroraColoradoUSA
| | - Stacey L. Martiniano
- Section of Pediatric Pulmonary and Sleep Medicine and Children's Hospital Colorado, Department of PediatricsAnschutz Medical Campus, University of ColoradoAuroraColoradoUSA
| | - John T. Brinton
- Department of Biostatistics and InformaticsAnschutz Medical Campus, University of ColoradoAuroraColoradoUSA
| | - Emily M. DeBoer
- Section of Pediatric Pulmonary and Sleep Medicine and Children's Hospital Colorado, Department of PediatricsAnschutz Medical Campus, University of ColoradoAuroraColoradoUSA
| | - Scott D. Sagel
- Section of Pediatric Pulmonary and Sleep Medicine and Children's Hospital Colorado, Department of PediatricsAnschutz Medical Campus, University of ColoradoAuroraColoradoUSA
| | - Brandie D. Wagner
- Department of Biostatistics and InformaticsAnschutz Medical Campus, University of ColoradoAuroraColoradoUSA
| | - Edith T. Zemanick
- Section of Pediatric Pulmonary and Sleep Medicine and Children's Hospital Colorado, Department of PediatricsAnschutz Medical Campus, University of ColoradoAuroraColoradoUSA
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7
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Yue C, Shen W, Hu L, Liu Y, Zheng Y, Ye Y, Zhang Y, Li J. Effects of Tigecycline Combined with Azithromycin Against Biofilms of Multidrug-Resistant Stenotrophomonas maltophilia Isolates from a Patient in China. Infect Drug Resist 2021; 14:775-786. [PMID: 33679134 PMCID: PMC7924117 DOI: 10.2147/idr.s298274] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/04/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Our aim was to investigate in vitro biofilm formation by S. maltophilia and the effects of antibacterial agents used to prevent biofilm formation. Methods Two trimethoprim/sulfamethoxazole-resistant S. maltophilia strains were isolated from the pleural effusion of a patient with cancer. The minimum inhibitory concentrations (MICs) of amikacin, azithromycin, cefoperazone/sulbactam, and tigecycline were determined. The checkerboard method was used to determine the fractional inhibitory concentration indices (FICIs). A crystal violet biofilm assay and confocal laser scanning microscopy (CLSM) were used to observe biofilm formation. In vitro effects of azithromycin combined with tigecycline on biofilms of S. maltophilia strains were tested. Results The two S. maltophilia isolates were confirmed to produce strong biofilms. Crystal violet biofilm assay and CLSM analysis of S. maltophilia biofilm were in the initial adhesive stage after 2 h incubation. Biofilm was in the exponential phase of growth at 12 h and reached maximal growth at 36–48 h. Compared with tigecycline or azithromycin alone, the combination of tigecycline and azithromycin increased the inhibiting effect S. maltophilia biofilm biomass after incubation for 12 h. Compared with the control group, in almost all strains treated with tigecycline and azithromycin, the biofilm was significantly suppressed significance (P<0.001). We found that 2x MIC azithromycin combined with 1x MIC tigecycline had the best inhibiting effect against the biofilm, the biofilm inhibition rates of three strains were all over 60%, the biofilm thickness was inhibited from 36.00 ± 4.00 μm to 8.00 μm, from 40.00 μm to 6.67± 2.31 μm, and from 32.00 μm to 13.33 ± 2.31 μm in SMA1, SMA2 and ATCC17666, respectively. Conclusion Azithromycin combined with tigecycline inhibited biofilm formation by S. maltophilia. Our study provides an experimental basis for a possible optimal treatment strategy for S. maltophilia biofilm-related infections.
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Affiliation(s)
- ChengCheng Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - WeiHua Shen
- Department of Special Clinic, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - LiFen Hu
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China.,Anhui Center for Surveillance of Bacterial Resistance, Hefei, Anhui, People's Republic of China.,Institute of Bacterial Resistance, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - YanYan Liu
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China.,Anhui Center for Surveillance of Bacterial Resistance, Hefei, Anhui, People's Republic of China.,Institute of Bacterial Resistance, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - YaHong Zheng
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China
| | - Ying Ye
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China.,Anhui Center for Surveillance of Bacterial Resistance, Hefei, Anhui, People's Republic of China.,Institute of Bacterial Resistance, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Yuhao Zhang
- Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - JiaBin Li
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China.,Anhui Center for Surveillance of Bacterial Resistance, Hefei, Anhui, People's Republic of China.,Institute of Bacterial Resistance, Anhui Medical University, Hefei, Anhui, People's Republic of China.,Department of Infectious Diseases, The Chaohu Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
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8
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Zhgun A, Avdanina D, Shumikhin K, Simonenko N, Lyubavskaya E, Volkov I, Ivanov V. Detection of potential biodeterioration risks for tempera painting in 16th century exhibits from State Tretyakov Gallery. PLoS One 2020; 15:e0230591. [PMID: 32240187 PMCID: PMC7117676 DOI: 10.1371/journal.pone.0230591] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 03/04/2020] [Indexed: 11/23/2022] Open
Abstract
In this study, we investigated biodeterioration of materials used in tempera painting by analyzing the structure of the microbiome in ancient tempera paintings exhibited in State Tretyakov Gallery, Moscow, Russia. Samples were obtained from 16th-century paintings, including a grand Russian Orthodox icon “The Church Militant” (all exhibits were without visible signs of biodeterioration), and from surrounding walls and ceilings (with vast zones of visible microbial growth). A number of microorganisms isolated from visible signs of environmental bio-damage were also detected in tempera paintings kept in temperature- and humidity-controlled conditions unfavorable for the growth of microflora. To determine the biodegrading potential of the microbiome for tempera paintings, we developed a set of mock layers from paintwork materials used in tempera painting of 16th century and their modern analogues and inoculated them with cultures containing filamentous fungi and bacteria. The susceptibility to microbial degradation of individual tempera painting materials was examined by micro-Fourier Transform Infrared (FTIR) spectroscopy, which enabled detection of even invisible signs of biodeterioration. The results indicate that the microorganisms isolated from paintings and surrounding areas in the museum are capable of causing significant damage of various tempera materials, among which varnishes were the most resistant; however, the addition of antiseptic (sodium pentachlorophenolate) can inhibit microbial growth on sturgeon glue.
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Affiliation(s)
- Alexander Zhgun
- Research Center of Biotechnology RAS, Moscow, Russia
- * E-mail:
| | | | | | - Nikolay Simonenko
- Kurnakov Institute of General and Inorganic Chemistry, RAS, Moscow, Russia
| | | | - Ivan Volkov
- Institute of Physics and Technology, Dolgoprudniy, Russia
| | - Victor Ivanov
- Institute of Physics and Technology, Dolgoprudniy, Russia
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9
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Hercun J, Alvarez F, Vincent C, Bilodeau M. Cystic fibrosis liver disease: A condition in need of structured transition and continuity of care. CANADIAN LIVER JOURNAL 2019; 2:71-83. [PMID: 35990223 PMCID: PMC9202747 DOI: 10.3138/canlivj-2018-0019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 09/10/2018] [Indexed: 08/05/2023]
Abstract
Liver disease affects one-third of patients with cystic fibrosis (CF) and it is one of the major causes of morbidity and mortality in these patients. Historically considered a disease of childhood, its impact is now seen more often in adulthood. The heterogeneous pattern of CF liver disease and its rapid progression to cirrhosis remain a diagnostic challenge and new questions pertaining to the nature of liver involvement have recently been raised. Non-invasive measures to stratify the severity of liver involvement are increasingly used to predict clinical outcomes. A single treatment, ursodeoxycholic acid, has been used to slow progression of liver disease while recent advances in the field of CF treatments are promising. Management of portal hypertension remains challenging but outcomes after liver transplantation are encouraging. While many questions remain unanswered, a growing number of CF patients reach adulthood and will require care for CF liver disease.
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Affiliation(s)
- Julian Hercun
- Hepatology Department, Centre Hospitalier de l’Université de Montréal, Montréal, Québec;
| | - Fernando Alvarez
- Gastroenterology, Hepatology and Nutrition Division, CHU Sainte-Justine, Montréal, Québec
| | - Catherine Vincent
- Hepatology Department, Centre Hospitalier de l’Université de Montréal, Montréal, Québec;
| | - Marc Bilodeau
- Hepatology Department, Centre Hospitalier de l’Université de Montréal, Montréal, Québec;
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10
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Levesque E, Ait-Ammar N, Dudau D, Clavieras N, Feray C, Foulet F, Botterel F. Invasive pulmonary aspergillosis in cirrhotic patients: analysis of a 10-year clinical experience. Ann Intensive Care 2019; 9:31. [PMID: 30778699 PMCID: PMC6379500 DOI: 10.1186/s13613-019-0502-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 01/23/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Cirrhosis is not recognised as one of the main risk factors of invasive pulmonary aspergillosis (IPA), although its prevalence is increasing. The aim of our study was to identify factors for IPA in such patients with a positive Aspergillus sp. culture in respiratory samples and to evaluate its impact on outcome. METHODS We conducted a monocentric retrospective study between January 2005 and December 2015. All cirrhotic patients hospitalised in our liver ICU with a positive Aspergillus sp. respiratory sample were included. These patients were case-matched with cirrhotic patients without positive Aspergillus respiratory sample. Finally, the patients were classified as having putative aspergillosis or colonisation according to the criteria described previously. RESULTS In total, 986 cirrhotic patients were admitted to ICU during the study period. Among these, sixty patients had a positive Aspergillus sp. respiratory sample. Chronic obstructive pulmonary disease (COPD) comorbidity and organ supports were significantly associated with Aspergillus colonisation. Seventeen patients (28%) were diagnosed as proven or putative IPA and 43 were considered as colonised by Aspergillus sp. The median delay between ICU admission and an IPA diagnosis was 2 [2-24] days. Only COPD was predictive of the presence of IPA (OR 6.44; 95% CI 1.43-28.92; p = 0.0151) in patients with a positive Aspergillus sp. culture. The probability of in-hospital mortality was 71% in the IPA group versus 19% in the colonisation group (p = 0.0001). CONCLUSION Patients with cirrhosis can be at risk of IPA, especially with COPD. Antifungal agents should be given as soon as possible mainly in cirrhotic patients with COPD.
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Affiliation(s)
- Eric Levesque
- Department of Anaesthesia and Surgical Intensive Care-Liver ICU, AP-HP Henri Mondor Hospital, 51 avenue du Maréchal de Lattre de Tassigny, 94010, Créteil, France. .,Ecole Nationale Vétérinaire d'Alfort (ENVA), Faculté de Médecine de Créteil, EA Dynamyc Université Paris-Est Créteil (UPEC), 8 rue du Général Sarrail, 94010, Créteil, France.
| | - Nawel Ait-Ammar
- Ecole Nationale Vétérinaire d'Alfort (ENVA), Faculté de Médecine de Créteil, EA Dynamyc Université Paris-Est Créteil (UPEC), 8 rue du Général Sarrail, 94010, Créteil, France.,Mycology Unit-Microbiology Department DHU, AP-HP Henri Mondor Hospital, 51 avenue du Maréchal de Lattre de Tassigny, 94010, Créteil, France
| | - Daniela Dudau
- Department of Anaesthesia and Surgical Intensive Care-Liver ICU, AP-HP Henri Mondor Hospital, 51 avenue du Maréchal de Lattre de Tassigny, 94010, Créteil, France
| | - Noémie Clavieras
- Department of Anaesthesia and Surgical Intensive Care-Liver ICU, AP-HP Henri Mondor Hospital, 51 avenue du Maréchal de Lattre de Tassigny, 94010, Créteil, France
| | - Cyrille Feray
- Hepatology Department, AP-HP Henri Mondor Hospital, 51 avenue du Maréchal de Lattre de Tassigny, 94010, Créteil, France
| | - Françoise Foulet
- Mycology Unit-Microbiology Department DHU, AP-HP Henri Mondor Hospital, 51 avenue du Maréchal de Lattre de Tassigny, 94010, Créteil, France
| | - Françoise Botterel
- Ecole Nationale Vétérinaire d'Alfort (ENVA), Faculté de Médecine de Créteil, EA Dynamyc Université Paris-Est Créteil (UPEC), 8 rue du Général Sarrail, 94010, Créteil, France.,Mycology Unit-Microbiology Department DHU, AP-HP Henri Mondor Hospital, 51 avenue du Maréchal de Lattre de Tassigny, 94010, Créteil, France
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11
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Melloul E, Roisin L, Durieux MF, Woerther PL, Jenot D, Risco V, Guillot J, Dannaoui E, Decousser JW, Botterel F. Interactions of Aspergillus fumigatus and Stenotrophomonas maltophilia in an in vitro Mixed Biofilm Model: Does the Strain Matter? Front Microbiol 2018; 9:2850. [PMID: 30542331 PMCID: PMC6277776 DOI: 10.3389/fmicb.2018.02850] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 11/06/2018] [Indexed: 12/23/2022] Open
Abstract
Introduction:Aspergillus fumigatus (Af) and Stenotrophomonas maltophilia (Sm) are pathogenic microorganisms, which coexist in the respiratory tract of cystic fibrosis (CF) patients. We recently developed an in vitro model of mixed biofilm associating Af ATCC 13073-GFP (Af13073) and Sm ATCC 13637 (Sm13637) and described an antibiosis effect. The present study aim was to assess the antibiosis of Sm on Af using different strains and to analyze the potential synergistic virulence of these strains in an in vivo Galleria mellonella model. Methods: The effect of Sm13637 was evaluated on eight Af strains and the effect of nine Sm strains was evaluated on Af13073. The strains originated from clinical cases (human and animal) and from environment. Fungal and bacterial inocula were simultaneously inoculated to initiate mixed biofilm formation. Fungal growth inhibition was analyzed by qPCR and CLSM and the fungal cell wall modifications by TEM analysis. The virulence of different Sm strains was assessed in association with Af in G. mellonella larvae. Results: All strains of Af and Sm were able to produce single and mixed biofilms. The antibiosis effect of Sm13637 was similar whatever the Af strain tested. On the other hand, the antibiosis effect of Sm strains was bacterial-fitness and strain dependent. One strain (1/9) originated from animal clinical case was never able to induce an antibiosis, even with high bacterial concentration. In the G. mellonella model, co-inoculation with Sm13637 and Af13073 showed synergism since the mortality was 50%, i.e., more than the summed virulence of both. Conclusion: Human clinical strains of Sm yielded in higher antibiosis effect on Af and in a thinner mixed biofilm, probably due to an adaptive effect of these strains. Further research covering Af increased wall thickness in the presence of Sm strains, and its correlation with modified antifungal susceptibility is encouraged in patients with chronic respiratory infections by these 2 microorganisms.
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Affiliation(s)
- Elise Melloul
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France
| | - Lolita Roisin
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France
| | - Marie-Fleur Durieux
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France.,Service de Parasitologie-Mycologie, Limoges, France
| | - Paul-Louis Woerther
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France.,Unité de Bactériologie-Hygiéne, Département de Microbiologie, Assistance Publique - Hôpitaux de Paris, Hôpital Henri Mondor, Créteil, France
| | - Delphine Jenot
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France.,Unité de Parasitologie-Mycologie, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Veronica Risco
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France.,Unité de Parasitologie-Mycologie, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Jacques Guillot
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France.,Unité de Parasitologie-Mycologie, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Eric Dannaoui
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France.,Unité de Parasitologie-Mycologie, Service de Microbiologie, Hôpital Européen Georges Pompidou, Assistance Publique - Hôpitaux de Paris, Faculté de Médecine, Université Paris-Descartes, Paris, France
| | - Jean-Winoc Decousser
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France.,Unité de Bactériologie-Hygiéne, Département de Microbiologie, Assistance Publique - Hôpitaux de Paris, Hôpital Henri Mondor, Créteil, France
| | - Françoise Botterel
- EA 7380 Dynamyc, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est Créteil, Créteil, France.,Unité de Parasitologie-Mycologie, Département de Microbiologie, Groupe Hospitalier Henri Mondor - Albert Chenevier, Assistance Publique - Hôpitaux de Paris, Université Paris-Est Créteil, Créteil, France
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Gupta P, Kale P, Khillan V. Resurgence of Global Opportunistic Multidrug-resistant Stenotrophomonas maltophilia. Indian J Crit Care Med 2018; 22:503-508. [PMID: 30111925 PMCID: PMC6069309 DOI: 10.4103/ijccm.ijccm_106_18] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
CONTEXT Stenotrophomonas maltophilia is a known nosocomial pathogen which is intrinsically resistant to multiple antibiotics. In India, S. maltophilia infection has only few case reports. AIM To determine the incidence of S. maltophilia infection from clinical isolates based on the specimen type, antibiotic susceptibility pattern, and impact on outcome. SETTINGS AND DESIGN One-year retrospective study was done at a tertiary liver care center. METHODS Patients with S. maltophilia isolation in clinical samples were selected. Serial levels of serum procalcitonin and total leukocyte count were recorded. Environmental surveillance was done from the wards of S. maltophilia isolation as part of routine practice. STATISTICAL ANALYSIS Continuous data were compared using Kruskal-Wallis test/Mann-Whitney test. The categorical data were compared by Chi-square/Fisher's exact test, wherever necessary. Besides this, an appropriate analysis like survival was carried out at the time of data analysis. RESULTS One hundred isolates were obtained from eighty patients of six wards. The greatest number (44/100, 44%) were from the Liver Coma Intensive Care Unit and the lowest (3/100) from the day care. Isolation from the respiratory samples was 1.32% and bloodstream infection 0.6%. Of 100 isolates, 12 (12%) were resistant to both trimethoprim-sulfamethoxazole and levofloxacin. CONCLUSION S. maltophilia was effectively isolated from the hospital environment, with two of hand impression and three of water samples' positive. Patients with respiratory infection had most S. maltophilia isolates. Antibiotic susceptibility revealed more resistance than reported in this region.
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Affiliation(s)
- Pradheer Gupta
- Department of Clinical Microbiology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Pratibha Kale
- Department of Clinical Microbiology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Vikas Khillan
- Department of Clinical Microbiology, Institute of Liver and Biliary Sciences, New Delhi, India
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