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Vieira-Alcântara K, Chagas TPG, da Costa GL, Pinto TN, Oliveira MME, Zahner V. First Identification of Emerging Pathogenic Yeast in Clogmia albipunctata (Diptera: Psychodidae) at a Brazilian Hospital. Microorganisms 2024; 12:2520. [PMID: 39770723 PMCID: PMC11676441 DOI: 10.3390/microorganisms12122520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2024] [Revised: 11/25/2024] [Accepted: 11/26/2024] [Indexed: 01/11/2025] Open
Abstract
Psychodinae (Diptera: Psychodidae), commonly known as "drain flies", are a subfamily of insects adapted to environments modified by humans. While often regarded as harmless, it has been reported that they may carry pathogenic microorganisms, contributing to hospital environmental contamination and potentially playing a role in healthcare-associated infections. This study aimed to investigate drain flies in a hospital setting to assess their role in carrying microbial pathogens. Twenty-six drain flies were collected from a tertiary hospital using sterile tubes and processed within two hours. The insects were identified as Clogmia albipunctata (Williston, 1893). Whole-body macerates were cultured on EMB media, and fungal isolates were identified using MALDI-TOF MS and ITS region sequencing. The emergent pathogen Trichosporon asahii was isolated, highlighting the potential role of C. albipunctata as a mechanical vector of fungal pathogens associated with HAIs. These findings underscore the importance of monitoring drain flies as part of infection prevention and control strategies in healthcare settings.
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Affiliation(s)
- Kéren Vieira-Alcântara
- Laboratório de Simulídeos e Oncocercose & Entomologia Médica e Forense, Oswaldo Cruz Instituto, Fiocruz, Avenida Brasil 4365, Manguinhos, Rio de Janeiro 21040-360, Brazil;
| | - Thiago Pavoni Gomes Chagas
- Departamento de Patologia, Faculdade de Medicina, Universidade Federal Fluminense, Niterói 24220-008, Brazil;
- Laboratório de Epidemiologia Molecular e Biotecnologia (LEMB), Faculdade de Farmácia, Universidade Federal Fluminense, Niterói 24241-000, Brazil
| | - Gisela Lara da Costa
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro 21040-360, Brazil
| | - Tatiane Nobre Pinto
- Laboratory of Taxonomy, Biochemistry and Bioprospecting of Fungi, Oswaldo Cruz Institute, Fiocruz, Rio de Janeiro 21040-360, Brazil
| | | | - Viviane Zahner
- Laboratório de Simulídeos e Oncocercose & Entomologia Médica e Forense, Oswaldo Cruz Instituto, Fiocruz, Avenida Brasil 4365, Manguinhos, Rio de Janeiro 21040-360, Brazil;
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Mathison BA, Madriz I, Pritt BS, Curler G. Psychodid flies and their implicated role in human myiasis and pseudomyiasis. J Clin Microbiol 2024; 62:e0120023. [PMID: 38363141 PMCID: PMC10935645 DOI: 10.1128/jcm.01200-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024] Open
Abstract
Several psychodid flies are commonly associated with human-inhabited environments and have been increasingly implicated in cases of human myiasis. However, the basic biology of psychodid larvae is not well-suited for survival in the human intestinal or urogenital tract, making true, prolonged myiasis unlikely. In this review, we performed a systematic literature review of published cases of purported myiasis caused by psychodid flies, their identification, associated clinical findings, and treatment. We also discuss the anatomy and lifecycle of psychodid flies in relation to their purported ability to use human tissue as a nutritive source and survive in the human alimentary or urogenital tracts. Based on the range of non-specific and varied reported clinical manifestations, lack of observed collections, life cycle patterns of psychodid flies, the mechanics of their mouthparts, and breathing requirements, we conclude that most cases likely represent incidental findings, or in rare cases possibly pseudomyiasis, rather than true myiasis, and provide recommendations for clinical evaluation and reporting so that disease misclassification and unnecessary therapy do not occur.
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Affiliation(s)
- Blaine A. Mathison
- Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah, USA
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Isai Madriz
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, Tennessee, USA
| | - Bobbi S. Pritt
- Division of Clinical Microbiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Gregory Curler
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, Tennessee, USA
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Rawat N, Sabu B, Jamwal R, Devi PP, Yadav K, Raina HS, Rajagopal R. Understanding the role of insects in the acquisition and transmission of antibiotic resistance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159805. [PMID: 36461578 DOI: 10.1016/j.scitotenv.2022.159805] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/23/2022] [Accepted: 10/25/2022] [Indexed: 06/17/2023]
Abstract
Antibiotic resistance (AR) is a global healthcare threat that requires a comprehensive assessment. Poorly regulated antibiotic stewardship in clinical and non-clinical settings has led to a horizontal dissemination of AR. A variety of often neglected elements facilitate the circulation of AR from antibiotic sinks like concentrated animal feeding operations and healthcare settings to other environments that include healthy human communities. Insects are one of those elements that have received underwhelming attention as vectors of AR, despite their well-known role in transmitting clinically relevant pathogens. We here make an exhaustive attempt to highlight the role of insects as zoonotic reservoirs of AR by discussing the available literature and deriving realistic inferences. We review the AR associated with insects housing various human-relevant environments, namely, animal farm industry, edible-insects enterprise, healthcare institutes, human settlements, agriculture settings and the wild. We also provide evidence-based accounts of the events of the transmission of AR from insects to humans. We evaluate the clinical threats associated with insect-derived AR and propose the adoption of more sophisticated strategies to understand and mitigate future AR concerns facilitated by insects. Future works include a pan-region assessment of insects for AR in the form of AR bacteria (ARB) and AR determinants (ARDs) and the introduction of modern techniques like whole-genome sequencing, metagenomics, and in-silico modelling.
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Affiliation(s)
- Nitish Rawat
- Gut Biology Laboratory, Department of Zoology, University of Delhi, Room No. 117, Delhi 110007, India
| | - Benoy Sabu
- Gut Biology Laboratory, Department of Zoology, University of Delhi, Room No. 117, Delhi 110007, India
| | - Rohit Jamwal
- Gut Biology Laboratory, Department of Zoology, University of Delhi, Room No. 117, Delhi 110007, India
| | - Pukhrambam Pushpa Devi
- Gut Biology Laboratory, Department of Zoology, University of Delhi, Room No. 117, Delhi 110007, India
| | - Karuna Yadav
- Gut Biology Laboratory, Department of Zoology, University of Delhi, Room No. 117, Delhi 110007, India
| | - Harpreet Singh Raina
- Gut Biology Laboratory, Department of Zoology, University of Delhi, Room No. 117, Delhi 110007, India; Department of Zoology, Sri Guru Teg Bahadur Khalsa College, University of Delhi, Delhi 110007, India
| | - Raman Rajagopal
- Gut Biology Laboratory, Department of Zoology, University of Delhi, Room No. 117, Delhi 110007, India.
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Cai L, Sun J, Yao F, Yuan Y, Zeng M, Zhang Q, Xie Q, Wang S, Wang Z, Jiao X. Antimicrobial resistance bacteria and genes detected in hospital sewage provide valuable information in predicting clinical antimicrobial resistance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 795:148815. [PMID: 34247085 DOI: 10.1016/j.scitotenv.2021.148815] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 06/27/2021] [Accepted: 06/29/2021] [Indexed: 02/05/2023]
Abstract
Extensive use of antibiotics is significantly associated with development of antibiotic-resistant (AR) bacteria. However, their causal relationships have not been adequately investigated, especially in human population and hospitals. Our aims were to understand clinical AR through revealing co-occurrence patterns between antibiotic-resistant bacteria and genes (ARB and ARGs), and their association with antibiotic use, and to consider impact of ARB and ARGs on environmental and human health. Antibiotic usage was calculated based on the actual consumption in our target hospital. ARB was identified by culture. In isolates collected from hospital sewage, bacterial-specific DNA sequences and ARGs were determined using metagenomics. Our data revealed that the use of culture-based single-indicator-strain approaches only captured ARB in 16.17% of the infectious samples. On the other hand, 1573 bacterial species and 885 types of ARGs were detected in the sewage. Furthermore, hospital use of antibiotics influenced the resistance profiles, but the strength varied among bacteria. From our metagenomics analyses, ARGs for aminoglycosides were the most common, followed by sulfonamide, tetracycline, phenicol, macrolides, and quinolones, comprising 82.6% of all ARGs. Association analyses indicated that 519 pairs of ARGs were significantly correlated with ARB species (r > 0.8). The co-occurrence patterns of bacteria-ARGs mirrored the AR in the clinic. In conclusion, our systematic investigation further emphasized that antibiotic usage in hospital significantly influenced the abundance and types of ARB and ARGs in dose- and time-dependent manners which, in turn, mirrored clinical AR. In addition, our data provide novel information on development of certain ARB with multiple antibiotic resistance. These ARB and ARGs from sewage can also be disseminated into the environment and communities to create health problems. Therefore, it would be helpful to use such data to develop improved predictive risk model of AR, to enhance effective use of antibiotics, and to reduce environmental pollution.
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Affiliation(s)
- Leshan Cai
- The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Jiayu Sun
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Fen Yao
- Department of Pharmacology, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Yumeng Yuan
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Mi Zeng
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Qiaoxin Zhang
- The First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Qingdong Xie
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, China
| | - Shiwei Wang
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, Medical College of Yangzhou University, Yangzhou, Jiangsu 225000, China
| | - Zhen Wang
- Institute of Marine Sciences, Shantou University, Shantou 515063, China; Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063, China
| | - Xiaoyang Jiao
- Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, Guangdong 515041, China.
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