Related Experiment Video
Updated: May 12, 2026

09:04
Discovery of New Intracellular Pathogens by Amoebal Coculture and Amoebal Enrichment Approaches
Published on: October 27, 2013
14.4K
Phaeoacremonium iranianum - a new corneal pathogen
Xiaona Liu1, Xiuhai Lu2, Juanjuan Zheng1
1Clinical Laboratory, Jinan Mingshui Eye Hospital, Longquan Road 5601, Zhangqiu District, Jinan, China.
BMC Ophthalmology
|April 23, 2025
Summary
Phaeoacremonium iranianum caused a rare corneal infection. Prompt antifungal therapy and keratectomy successfully controlled the infection, offering insights into managing this fungal keratitis.
Area of Science:
- Ophthalmology
- Mycology
- Infectious Diseases
Background:
- Phaeoacremonium species are environmental fungi, typically causing plant diseases.
- Human infections by Phaeoacremonium are uncommon.
Purpose of the Study:
- To report a rare case of corneal infection caused by Phaeoacremonium iranianum.
- To contribute to the clinical understanding and management of Phaeoacremonium-induced fungal keratitis.
Main Methods:
- A patient presented with a corneal ulcer due to Phaeoacremonium iranianum.
- Antifungal susceptibility testing was performed.
- Treatment involved aggressive antifungal therapy and keratectomy.
Main Results:
- Antifungal susceptibility testing showed voriconazole (0.5 µg/ml) and amphotericin B (0.05 µg/ml) were highly effective.
- The patient underwent keratectomy combined with antifungal therapy.
- One month post-treatment, the corneal infection was controlled with residual opacity.
Conclusions:
- This case highlights Phaeoacremonium iranianum as a potential cause of fungal keratitis.
- Successful management involved a combination of surgical intervention and targeted antifungal treatment.
Related Concept Videos
Surface Appendages of Archaea
Archaeal surface appendages are highly specialized structures essential for environmental adaptation, encompassing roles in adhesion, biofilm formation, and motility. Among these appendages, pili and archaella stand out for their distinct morphologies and functionalities, enabling archaea to thrive in diverse and often extreme environments.Pili: Adhesion and Biofilm FormationPili are filamentous structures assembled from pilin protein subunits, primarily contributing to adhesion and biofilm...
Bacterial Phylum Actinobacteria
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
Diversity of Archaea II
Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
Fungal Phylum Microsporidia
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
Viruses of Archaea
Archaeal viruses play a crucial role in the ecosystems of extremophilic archaea, particularly those belonging to the phyla Euryarchaeota and Crenarchaeota. By shaping host evolution and facilitating gene transfer, these viruses influence microbial communities and contribute to genetic diversity in extreme environments. The archaea they infect thrive in acidic hot springs and hydrothermal vents characterized by high temperatures and low pH. Archaeal viruses exhibit remarkable structural...
Microbiome of the Eye
The human eye has a specialized microbiota that reflects its unique anatomical and immunological environment. This low-biomass microbial community predominantly colonizes the conjunctiva and eyelid margins, playing a vital role in ocular surface homeostasis and defense. Despite its proximity to the richly colonized facial skin, the ocular surface maintains a distinct microbial profile due to continuous mechanical and biochemical defense mechanisms.The conjunctival surface hosts fewer microbial...

