molecular diagnostics – Page 2

Diagnostic Performance of a PCR-Based Approach for the Diagnosis of Dermatomycosis

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This study evaluated a new testing method combining DNA analysis (PCR) with traditional microscopy and culture to diagnose fungal skin, hair, and nail infections. The PCR method detects the infection quickly and accurately, identifying the specific fungus causing the problem within days rather than weeks. The study of over 4,400 samples found that Trichophyton rubrum was the most common cause of fungal infections, and the combined testing approach was 98.5% accurate while reducing unnecessary lab work.

Usefulness of Serum as a Non-Invasive Sample for the Detection of Histoplasma capsulatum Infections: Retrospective Comparative Analysis of Different Diagnostic Techniques and Quantification of Host Biomarkers

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This study examined whether using blood serum samples is practical for diagnosing histoplasmosis, a serious fungal infection caused by Histoplasma capsulatum. Researchers tested four different diagnostic methods on serum samples from patients with histoplasmosis, varying in severity and immune status. They found that combining multiple testing methods provided the best results, with different techniques working better depending on whether patients had weakened immune systems from HIV or were otherwise healthy. The study also measured immune system chemicals called cytokines and found elevated levels in infected patients, suggesting these could help predict disease severity.

Onychomycosis in the US Pediatric Population—An Emphasis on Fusarium Onychomycosis

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This study examined nail fungus infections in American children using advanced molecular testing. Researchers found that elementary school-aged children (ages 6-11) have the highest rates of nail fungus, usually caused by common fungi like Trichophyton rubrum. Notably, Fusarium, an environmental fungus that was once rare in nail infections, is becoming increasingly common, especially in older teenagers, which may require different treatment approaches.

First Report of Diaporthe goulteri on Soybean in Germany

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Researchers in Germany discovered a fungal disease called Diaporthe goulteri infecting soybean plants for the first time. This fungus, previously known only from sunflowers in Australia, was isolated from a soybean seed and confirmed through genetic testing. Laboratory experiments showed the fungus can infect soybean stems and cause dark discoloration and tissue damage. This finding is important for soybean farmers as it indicates a new disease threat that may need to be monitored and managed.

Fungal keratitis complicating the diagnosis of Acanthamoeba keratitis

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A 42-year-old farmer presented with a severe eye infection that was initially misdiagnosed as a viral infection caused by herpes simplex virus. When antiviral treatment failed, doctors discovered the patient had a fungal infection caused by Fusarium. However, advanced testing revealed she actually had a dual infection with both the fungus and a microscopic parasite called Acanthamoeba. The patient required corneal transplant surgery and combination therapy with multiple medications to control the infection and preserve vision.

The diagnosis of mucormycosis by PCR in patients at risk: a systematic review and meta-analysis

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This study reviews how well a molecular test called PCR can diagnose mucormycosis, a dangerous fungal infection. Researchers analyzed 30 studies covering over 5,000 patient samples and found that PCR works very well for detecting this infection, especially when using samples from the lungs. Blood tests were also effective but slightly less sensitive. The study recommends using PCR as part of updated diagnostic guidelines to help doctors catch this serious infection earlier, potentially improving patient outcomes.

Molecular Identification of Candida Species among Iranian Patients: Pursuing Candida auris

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This study evaluated a simple molecular test called PCR-RFLP to identify different types of Candida fungi in hospitalized patients in Iran. Among 136 patient samples, researchers found eight different Candida species, with common Candida albicans being most prevalent, but other more dangerous species also present. No cases of the emerging pathogen Candida auris were found, though the test method can effectively detect it. The researchers conclude this cost-effective test could be valuable for identifying dangerous fungal infections in developing countries.

John Perfect Shares Insights on Infectious Diseases, Antifungal Therapy, and Drug Resistance

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This interview with Dr. John Perfect, a leading expert in fungal infections, discusses how antifungal treatments have evolved over his 48-year career. He explains that while fungal resistance is a concern, it’s less problematic than bacterial antibiotic resistance because fungi don’t spread resistance through plasmids. Dr. Perfect emphasizes the importance of newer, faster-acting antifungal drugs and combining drug therapy with immune system support to better treat serious fungal infections like cryptococcal meningitis and candidemia.

John Perfect Shares Insights on Infectious Diseases, Antifungal Therapy, and Drug Resistance

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Dr. John Perfect, a leading expert in fungal infections, shares his 48 years of experience studying infectious diseases, particularly focusing on Cryptococcus and candida infections. He discusses how antifungal medications have evolved from highly toxic drugs to more effective treatments, while emphasizing the need for faster-acting drugs that require shorter treatment periods. The interview covers emerging diagnostic tools using molecular methods, the promise of combining drugs with immune-boosting therapies, and the importance of understanding how fungi survive in the human body to develop better treatments.

The dark side of avocados: a review of anthracnose and stem-end rot in postharvest fruit

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Avocados are a valuable global fruit crop, but two fungal diseases—anthracnose and stem-end rot—cause major economic losses by making fruit unmarketable. These fungi infect avocados in the orchard but remain hidden until the fruit ripens, making them difficult to detect and control. Recent advances in detection technology and disease management strategies, including biological controls and natural treatments, offer promising solutions to reduce losses and keep avocados fresh from farm to table.

Research Topic: molecular diagnostics