Mycopathologia最新文献

{"title":"Molecular Tracking of Emerging Fusarium Species in Keratitis: F. veterinarium, F. contaminatum, and F. curvatum.","authors":"Ruan Campos Monteiro, Maria Cecília Zorat Yu, Somayeh Dolatabadi, Ferry Hagen, Marcelo Sandoval-Denis, Elaine Cristina Francisco, Denise de Freitas, Zoilo Pires De Camargo, Ana Luisa Höfling-Lima, Anderson Messias Rodrigues","doi":"10.1007/s11046-025-00929-7","DOIUrl":"10.1007/s11046-025-00929-7","url":null,"abstract":"<p><p>Fungal keratitis, which is caused primarily by Neocosmospora and Fusarium species, is a significant global health issue that affects more than a million people annually in tropical and subtropical regions. Neocosmospora solani (formerly Fusarium solani) is a leading cause of corneal infections, along with members of the Fusarium oxysporum species complex (FOSC). This study provides new insights by reporting a series of ocular fusariosis cases caused by FOSC members and presenting molecular evidence linking specific haplotypes within FOSC to human infections. We describe three cases of Fusarium keratitis selected from a comprehensive review of clinicopathological data in our institution's archives. These cases were chosen for their distinctive clinical presentations and the involvement of less common Fusarium species. Two of these patients were diagnosed with keratitis and anterior endophthalmitis, and the third patient had a corneal ulcer previously treated with topical antivirals and antibiotics. All patients were successfully treated with topical amphotericin B. The Fusarium isolates from these patients were subjected to detailed molecular characterization, including DNA sequencing (tef1α, rpb2, CaM, tub2, and LSU), amplified fragment length polymorphism (AFLP) marker analysis, and MALDI-TOF MS analysis. Remarkably, our study reports the first case of human infection by F. veterinarium, alongside cases involving F. contaminatum and F. curvatum. Furthermore, a molecular survey using haplotypic networks based on tef1α sequences identified genotypes associated with human infections and revealed the emergence of F. veterinarium clade VII. Our findings emphasize the need for vigilance regarding emerging species within the FOSC, particularly F. veterinarium. This highlights the need for improved diagnostic tools and targeted research to combat fusarioid-related infections effectively.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"22"},"PeriodicalIF":3.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iron Levels in Bronchoalveolar Lavage Fluid of Hematological Patients with Suspected Invasive Pulmonary Aspergillosis and their Association with 12-week Mortality: A Retrospective Cohort Study.","authors":"H Lamberink, J Heijmans, A Wagemakers, K van Dijk","doi":"10.1007/s11046-025-00934-w","DOIUrl":"10.1007/s11046-025-00934-w","url":null,"abstract":"<p><strong>Objectives: </strong>Accuracy of diagnostic tests for invasive pulmonary aspergillosis (IPA) using bronchoalveolar lavage fluid (BALF) remains suboptimal. Elevated tissue iron in lung transplant and murine models is linked to invasive Aspergillus growth. This study examines the correlation between BALF iron levels, IPA, and 12-week mortality.</p><p><strong>Methods: </strong>We conducted a retrospective cohort study at a tertiary care center, including 100 BALF samples from patients with hematological malignancies and suspected IPA between 2014 and 2019. Data regarding iron concentrations, mycological tests, and 12-week mortality were analyzed.</p><p><strong>Results: </strong>Higher iron levels correlated with a greater likelihood of IPA based on EORTC/MSGERC 2020 definitions (p = 0.038). The ROC area was 0.648 (95% CI 0.531-0.764), with an optimal cut-off of 0.75 µmol/L to distinguish cases (27 probable and 0 proven IPA) from controls (56 possible and 17 no IPA), with sensitivity 76.9% and specificity 47.3%. Iron levels were positively correlated with higher fungal loads (galactomannan: Spearman's ρ 0.323, p = 0.001; Aspergillus PCR Ct-values: ρ - 0.602, p = 0.002). A trend toward higher 12-week mortality was observed in patients with iron concentrations ≥ 0.90 µmol/L compared to lower levels (p = 0.086).</p><p><strong>Conclusions: </strong>BALF iron concentrations were highest in those with probable IPA, followed by possible IPA and lowest in patients without IPA, with higher iron levels also correlating with fungal loads and potentially with 12-week mortality. However, given the various potential confounding factors, further prospective studies are essential to establish causality. These findings warrant additional investigation into BALF iron as a potential marker for 12-week survival, but validation is necessary before considering it as a supplementary marker in the current EORTC/MSGERC 2020 classification for probable or possible IPA.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"23"},"PeriodicalIF":3.6,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11790682/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Establishment of a Mouse Intravenous Challenge Model for Predicting Virulence in Yarrowia lipolytica Disseminated Infection.","authors":"Jinhan Yu, Xueqing Liu, Weixin Ke, Leixin Ye, Changsheng Wu, Hua Yu, Han Wang, Linqi Wang, Ying Zhao, Yingchun Xu","doi":"10.1007/s11046-025-00930-0","DOIUrl":"10.1007/s11046-025-00930-0","url":null,"abstract":"<p><p>Invasive fungal infections pose a significant health threat. Yarrowia lipolytica (formerly known as Candida lipolytica) is an opportunistic yeast with pathogenic potential, but its virulence and impact on the host remain poorly understood. This study aimed to investigate the infection characteristics associated with this relatively unknown pathogen by establishing reliable animal models. We developed intravenous challenge models in immunocompetent and immunosuppressed BALB/c mice by injecting fungal cells directly into the bloodstream. In immunocompetent mice, Y. lipolytica was effectively cleared even at the highest challenge dose of 1 × 10⁸ cells, resulting in minimal mortality. However, this clearance was accompanied by a significant elevation in peripheral blood cytokine levels. Three days post-infection, the fungal burden was highest in the lungs (P < 0.0001), followed by the spleen, kidneys, liver, and brain. In immunosuppressed mice, the mortality rate following Y. lipolytica infection significantly increased (P < 0.001), with the highest fungal burden consistently observed in the lungs. In the immunosuppressed model, clinical isolates exhibited a greater lung fungal burden compared to industrial isolate. In conclusion, Y. lipolytica is a low-virulence fungus that is challenging to establish as a fatal infection in immunocompetent hosts but exhibits a marked tropism for the lungs, where lung fungal burden serves as an effective indicator of virulence. This model may also provide critical insights for studying fungal pulmonary infection pathogenesis and the infection dynamics of Y. lipolytica, especially for immunocompromised patients.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"21"},"PeriodicalIF":3.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143075133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extensive Recalcitrant Tinea Corporis Caused by Trichophyton indotineae.","authors":"Lanyu Sun, João Ferreira, Bruno Vidal, Cristina Veríssimo, Raquel Sabino, Tiago Marques, Luís Soares-de-Almeida, Paulo Filipe","doi":"10.1007/s11046-024-00927-1","DOIUrl":"10.1007/s11046-024-00927-1","url":null,"abstract":"","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"20"},"PeriodicalIF":3.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143052872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Draft Genome of Naganishia uzbekistanensis from a Clinical Pulmonary Infection.","authors":"Rong-Chen Dai, Xin-Fei Chen, Xin Fan, Li Gu, Li Zhang, Dan Guo, Ying-Chun Xu, Meng Xiao","doi":"10.1007/s11046-025-00931-z","DOIUrl":"10.1007/s11046-025-00931-z","url":null,"abstract":"<p><p>This study presents the first high-quality assembled genome of Naganishia uzbekistanensis, derived from a clinical isolate CY11558 obtained from a patient with a postoperative pulmonary infection. This work provides an improved reference assembly for downstream research and diagnosis of infections caused by this species.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"19"},"PeriodicalIF":3.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143052869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clioquinol 3% Cream Improves Clinical Symptoms and Restores the Skin Microbiome in Interdigital Tinea Pedis.","authors":"Lingzhi Zhong, Tingting Li, Xiaoyue Zhang, Houmin Li","doi":"10.1007/s11046-024-00923-5","DOIUrl":"10.1007/s11046-024-00923-5","url":null,"abstract":"<p><strong>Background: </strong>Interdigital tinea pedis is a common type of tinea pedis that occurs between toes and is easy to recur. Recently, the skin microbiome analysis of interdigital tinea pedis showed changes in bacterial microbiome in addition to fungal infection.</p><p><strong>Objectives: </strong>To investigate the efficacy and safety of clioquinol 3% cream in treating interdigital tinea pedis as well as characterize changes in the skin microbiome during treatment.</p><p><strong>Methods: </strong>The clinical characteristics and skin microbiome of patients with interdigital tinea pedis were investigated in a longitudinal prospective study. In total 28 participants were rcruited to use the clioquinol 3% cream topically to the target skin lesions twice a day for 1 week. Disease severity evaluation, fungal microscopic examination, and sample collection for skin microbiome analysis were performed at baseline, after treatment, and 1 week post-treatment.</p><p><strong>Results: </strong>Compared with baseline, the disease severity, lesion score, pruritus score, and malodor score of the patients significantly decreased after treatment and at 1 week post-treatment (P < 0.05). The fungal profiles after treatment and 1 week post-treatment revealed significantly decreased abundance of Trichophyton and significantly increased abundances of Cladosporium, Alternaria, and Aspergillus, which led to higher fungal diversity than pretreatment samples. The bacterial profiles after treatment and 1 week post-treatment revealed significantly decreased abundances of Brevibacterium, Finegoldia, and Facklamia. The abundance of Streptococcus and bacterial diversity were also significantly decreased at 1 week post-treatment. The disease severity was positively associated with the abundance of Trichophyton, Arthroderma, Finegoldia, Facklamia, Brevibacterium, Corynebacterium, and Porphyromonas.</p><p><strong>Conclusions: </strong>The clioquinol 3% cream was efficient on treating interdigital tinea pedis by decreasing the abundance of pathogenic fungus, recovering the normal balance of the fungal and bacterial communities, and restore species diversity.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"18"},"PeriodicalIF":3.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143024191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adult Kerion Caused by Trichophyton tonsurans.","authors":"Yu Peng, Bilin Dong, Bin Hu, Jing Yang, Zhong Liu, Zhongsheng Tong","doi":"10.1007/s11046-024-00911-9","DOIUrl":"10.1007/s11046-024-00911-9","url":null,"abstract":"<p><p>Adult tinea capitis, especially kerion, caused by Trichophyton tonsurans is relatively rare in China. Here, we report a case caused by the agent in an old woman with normal immune function. Fungal microscopic examination and culture were positive. The isolate was further identified as Trichophyton tonsurans by internal transcribed spacer (ITS) sequencing. Skin biopsy and histopathological examination suggested diffuse inflammatory cell infiltration in the dermis and subcutaneous tissue. Notably, fungal spores were observed within the dermis by Periodic acid-Schiff (PAS) staining. After eight weeks of treatment with oral griseofulvin and topical luliconazole, the patient's abscess subsided, hair regrowth occurred without scarring, and the mycologic examination returned negative.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"17"},"PeriodicalIF":3.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143059834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Epidemiology of Coronavirus Disease 2019-Associated Fungal Infections in the Intensive Care Unit: A Single-Center Retrospective Study.","authors":"Jessica S Little, Gerald McGwin, Lisa Tushla, Kaitlin Benedict, Meghan M Lyman, Mitsuru Toda, John W Baddley, Peter G Pappas","doi":"10.1007/s11046-025-00928-8","DOIUrl":"10.1007/s11046-025-00928-8","url":null,"abstract":"<p><strong>Introduction: </strong>Invasive fungal disease (IFD) is a morbid superinfection that can arise in critically ill patients with COVID-19 infection. Studies evaluating the full spectrum of COVID-19-associated fungal infections remain limited.</p><p><strong>Methods: </strong>Single-center retrospective study assessing IFD in patients with COVID-19, hospitalized for ≥ 72 h in the intensive care unit (ICU) between 02/25/20 and 02/28/22 (n = 1410). IFD was assessed using consensus criteria (EORTC/MSGERC or ISHAM/ECMM criteria). T- and chi-square tests compared demographic/clinical characteristics between IFD and non-IFD patients. Cox proportional hazards regression estimated risk factors for in-hospital mortality.</p><p><strong>Results: </strong>Of 1410 patients with severe COVID-19, 70 (5%) had a diagnosis of COVID-19-associated fungal infection with invasive candidiasis occurring in 3%, and invasive aspergillosis in 2%. Other fungal infections were rare. Patients with IFD had longer ICU stays (26 vs. 13 days; p < 0.001); increased rates of mechanical ventilation (99% vs. 70%; p < 0.001); and a higher risk of in-hospital death (69% vs. 36%; p < 0.001). On multivariable analysis, COVID-associated fungal infections were associated with an increased risk of in-hospital mortality.</p><p><strong>Conclusions: </strong>This real-world study of critically ill patients with COVID-19 demonstrated a low incidence of COVID-19-associated fungal infections with invasive candidiasis occurring most frequently. Fungal infections were associated with an increased risk of in-hospital mortality in this population.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"16"},"PeriodicalIF":3.6,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143008780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Malassezia polysorbatinonusus sp. nov., a Novel Isolate from a Japanese Patient with Seborrheic Dermatitis.","authors":"Junichiro Hiruma, Honoka Nojo, Masataro Hiruma, Takashi Sugita, Koich Makimura, Kazutoshi Harada, Rui Kano","doi":"10.1007/s11046-024-00926-2","DOIUrl":"10.1007/s11046-024-00926-2","url":null,"abstract":"<p><p>We describe a novel Malassezia species named Malassezia polysorbatinonusus, isolated from a Japanese patient with seborrheic dermatitis. The internal transcribed spacer (ITS) region of the isolate (LSEM 4845^T) were only 94.7% identical to those of M. yamatoensis. A phylogenetic analysis of D1/D2 domain of 26S rDNA and β-TUB-encoding gene sequences also revealed that the novel isolate was distinct from the cluster formed by other Malassezia species. Notably, morphological characteristics and molecular analysis indicated that the novel species is most closely related to M. yamatoensis isolated from a Japanese patient with seborrheic dermatitis, although the two species exhibit different physiological characteristics. In contrast to M. yamatoensis, the novel isolate does not metabolize Tweens and can grow at 40 °C. These characteristics have historically distinguished animal Malassezia isolates from those isolated from humans. Therefore, we conclude the novel isolate constitutes a new species, which we designate M. polysorbatinonusus.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"15"},"PeriodicalIF":3.6,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142979241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Epidemiology and Clinical Aspects of Dermatophytosis in Guiyang, Southwest China (2017-2023): A Single-Institution Retrospective Study.","authors":"Songgan Jia, Jiali Zhu, Zhan Zhou, Wanglan Luo, Zhengling Shang, Yinhui Jiang, Clement K M Tsui, Di Che, Yanping Jiang","doi":"10.1007/s11046-024-00922-6","DOIUrl":"10.1007/s11046-024-00922-6","url":null,"abstract":"<p><p>Epidemiological studies combining taxonomic and clinical data have been limited globally, particularly Guiyang, the most under-developed economic provincial capital city in southwestern China. A retrospective analysis was performed of dermatophyte epidemiology involving all culture-positive cases received between May 2017 and May 2023 at the Affiliated Hospital of Guizhou Medical University. Phylogenetic analysis was conducted on 391 dermatophyte isolates collected from patients using the rDNA internal transcribed spacer sequences. Clinical relevance information was analyzed statistically using T-test, one-way ANOVA, Kruskal-Wallis H test, and Chi-square test. Eight species were recognized, and their identity was confirmed on the basis of phylogenetics. Trichophyton rubrum (n = 308, 78.77%) ranked first, followed by T. mentagrophytes (n = 39, 9.97%) and Microsporum canis (n = 32, 8.18%). Tinea unguium (48.56%) was the most common type of dermatophytosis in this study, rates of detection being impacted by the host population's attention for dermatophyte infections. The hypothesized patterns of evolution in the M. canis series, T. mentagrophytes series and T. rubrum series, i.e. from zoophilic to a preponderantly anthropophilic nature, was reflected in clinical parameters such as host age, occupational background, infection pattern, degree of skin involvement and site preference. To the best of our knowledge, we provide the first detailed analysis of epidemiological characteristics and pathogenic patterns of dermatophytosis in Guiyang.</p>","PeriodicalId":19017,"journal":{"name":"Mycopathologia","volume":"190 1","pages":"14"},"PeriodicalIF":3.6,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142951747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}