Research Keyword: MALDI-TOF MS

Utility of MALDI-ToF MS for Recognition and Antifungal Susceptibility of Nannizzia, an Underestimated Group of Dermatophytes

Nannizzia species are soil-dwelling fungi that increasingly cause stubborn skin, nail, and hair infections in humans and animals. This study tested two laboratory methods for identifying these fungi and measured their sensitivity to eight antifungal drugs. The faster liquid-based method was slightly more accurate (67%) than the traditional culture method (62%), though neither method could identify six very rare species. Terbinafine emerged as the most effective antifungal treatment in laboratory tests.

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The Brief Case: Cutaneous ulceration associated with acalabrutinib treatment

A 72-year-old patient being treated with acalabrutinib for blood cancer developed a slowly growing skin ulcer on the thigh. Testing identified a fungal infection caused by Alternaria alternata, a mold found in soil and air. The patient was successfully treated with an antifungal medication called posaconazole, with the ulcer healing over one month. This case highlights that doctors should check for fungal infections in chronic skin wounds of patients taking BTK inhibitor medications.

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Keep the Hospital Clean: Diagnostic Performance of Ten Different Molecular and Culture-Based Methods to Detect Candidozyma (Candida) auris

This study tested different methods to detect a dangerous hospital fungus called Candida auris. Researchers compared growing the fungus on special plates and using molecular tests on patient samples. They found that molecular tests (qPCR) were most sensitive for detecting low levels of the fungus, while growing it on special plates worked well for higher levels. The best approach depends on whether a hospital is dealing with an outbreak or routine screening.

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