Two patients developed dark pigmentation on their toenails caused by rare combinations of fungal infections. Through laboratory testing and genetic analysis, doctors identified fungi never before known to cause this type of nail discoloration. Both patients were successfully treated with an antifungal medication called efinaconazole, with complete resolution of symptoms within a few months.
Scientists performed a comprehensive study organizing thousands of similar enzymes called polyphenol oxidases (PPOs) found across all living organisms into 12 distinct groups based on their evolutionary relationships. They discovered that a major gene duplication event in ancient times created two main types of these enzymes with different structural features and functions. This new classification system shows that fungal enzymes called o-methoxy phenolases are particularly abundant in certain fungi, likely helping them break down plant materials like lignin.
A 76-year-old gardener developed a gray-green discolored thumbnail that was initially thought to be a bacterial infection. Testing revealed it was actually caused by a fungus called Fusarium solani, which unusually produced dark-green colonies. The patient was successfully treated by removing the affected nail and applying an antifungal medication, demonstrating the importance of proper fungal testing for nail infections.
Two penguins at an aquarium showed respiratory problems and were suspected of having a serious fungal infection called aspergillosis. Doctors used CT scans to identify fluid in their air sacs and collected samples for testing. The tests showed the penguins did not have the fungal infection, so they did not need antifungal medications. Both penguins recovered naturally, demonstrating that combining imaging with fluid analysis can help identify the real cause of respiratory problems and avoid unnecessary medication.