MALDI-TOF mass spectrometry

Echoes of 1816: microbial footprints in heritage artifacts from Argentina’s museum of independence

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Scientists studied bacteria living on historic artifacts at Argentina’s Independence Museum to understand how microbes damage precious heritage items. They found 49 different bacterial species on artifacts like 200-year-old photographs, wooden furniture, and textiles, discovering that each artifact hosts a unique microbial community. The study shows that understanding these bacteria is crucial for preserving cultural treasures and protecting museum workers from potential health risks caused by microbial exposure during artifact handling and conservation.

What Do We Know About Cryptococcus spp. in Portugal? One Health Systematic Review in a Comprehensive 13-Year Retrospective Study (2013–2025)

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This study examines cryptococcosis, a fungal infection that affects both animals and humans, across Portugal from 2013-2025. Researchers found that about 4.5% of animal samples tested positive for Cryptococcus species, with infections most common in dogs and cats. The infections peaked during summer months and were most prevalent in central Portugal, with different fungal species affecting different animal types. The research emphasizes the importance of coordinated monitoring across animals, humans, and the environment to better understand and control this disease.

Naganishia albidus Causing Perioral Cutaneous Infection: A Rare Case Easily Misdiagnosed

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A 37-year-old man developed an unusual fungal skin infection around his mouth caused by Naganishia albidus, a rare yeast. He was initially misdiagnosed with eczema and his condition worsened with wrong treatment. Advanced fungal testing techniques helped identify the correct organism, and after six weeks of antifungal medication (both oral and topical), his skin completely cleared. This case shows why doctors need to consider rare fungal infections when skin problems don’t respond to typical treatments.

Identification of Challenging Dermatophyte Species Using Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry

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This study shows that a specialized technique called MALDI-TOF mass spectrometry can quickly and accurately identify skin fungal infections caused by dermatophytes. By creating a library of local fungal strains from Taiwan and combining it with commercial databases, researchers achieved over 90% accuracy in identifying different dermatophyte species. This practical method could help doctors diagnose fungal infections faster and choose better treatments.

Neosartorya udagawae pulmonary infection requiring a surgical treatment in a paediatric haematopoietic progenitor cell recipient

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A three-year-old boy with leukemia received a bone marrow transplant and developed a serious fungal lung infection caused by Neosartorya udagawae, a rare fungal pathogen. Despite receiving multiple antifungal medications at appropriate doses, the infection continued to worsen and spread in his lungs. Doctors ultimately had to surgically remove the infected portion of his lung (left upper lobe) to successfully treat the infection, and the child recovered completely without recurrence after three years of follow-up.

Photo Quiz: A cutaneous fungal infection with discordant biomarker results—a diagnostic challenge

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This case describes a woman with advanced HIV who developed a serious fungal infection called histoplasmosis affecting her skin, lungs, and lymph nodes. Diagnosis was challenging because standard fungal blood tests came back negative, but careful examination of samples and specialized testing confirmed Histoplasma capsulatum. The patient was successfully treated with antifungal medications, highlighting the importance of not relying solely on negative tests when clinical suspicion is high.

A prospective, multicenter study of invasive fungal disease caused by molds in children and adults in Chile

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Researchers studied serious fungal infections caused by molds in Chilean hospitals and found that aspergillus was the most common culprit, affecting both children and adults. Many patients with these infections were also suffering from COVID-19, showing how serious respiratory viruses can increase the risk of fungal complications. Good news: the study found no resistance to common antifungal medications in Chile yet, though overall survival rates remain concerning at around 60% at three months.

Continuous debridement combined with short-term posaconazole therapy for cutaneous mucormycosis caused by Rhizopus oryzae infection secondary to acute myeloid leukemia: a case report

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An 80-year-old patient with acute myeloid leukemia developed a serious fungal skin infection caused by Rhizopus oryzae on his lower leg. Doctors treated the infection by repeatedly cleaning out the infected tissue and giving him an antifungal medication called posaconazole for just one week. Despite the short treatment duration due to cost concerns, the patient’s wound gradually healed over four months through continued surgical care, showing that sometimes focused surgical treatment can be as effective as long-term medication.

Severe Saprochaete capitata fungemia presenting as micafungin breakthrough hepatosplenic lesions in an immunocompromised patient: case report

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A 70-year-old woman with blood cancer developed a serious fungal blood infection caused by Saprochaete capitata, a rare soil fungus, despite taking preventive antifungal medication. The infection spread to her liver and spleen, creating multiple lesions and a dangerous aneurysm. Doctors successfully treated her with a combination of three antifungal drugs, particularly voriconazole, which proved more effective than the initial preventive medication. This case highlights how rare fungi can cause severe infections in cancer patients and the importance of recognizing when standard preventive treatments are not working.

Performance of the VITEK® MS system for the identification of filamentous fungi in a microbiological laboratory in Chile

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This study tested a new laboratory technology called VITEK® MS for quickly identifying mold infections in patients. Researchers tested the system on 67 mold samples representing 35 different species. The technology successfully identified over 91% of the mold samples accurately without any misidentifications, making it a reliable tool for hospitals to quickly determine what type of mold is causing an infection so doctors can prescribe the right antifungal medication.

Research Keyword: MALDI-TOF mass spectrometry