Related Experiment Video
Updated: Jul 18, 2026
08:20
Sexual Development and Ascospore Discharge in Fusarium graminearum
Published on: March 29, 2012
Fatal sporotrichosis
Christopher B Yelverton1, Cloyce L Stetson, Ran H Bang
1Wake Forest University, Winston-Salem, North Carolina, USA.
Cutis
|November 24, 2006
Summary
Disseminated sporotrichosis, a fungal infection from Sporothrix schenckii, is a severe risk for immunocompromised individuals. This case highlights fatal outcomes in patients with liver disease and presumed sarcoidosis on corticosteroid therapy.
Area of Science:
- Mycology
- Infectious Diseases
- Immunology
Background:
- Disseminated sporotrichosis is a severe fungal infection caused by Sporothrix schenckii.
- It predominantly affects immunocompromised individuals, including those with acquired immunodeficiency syndrome (AIDS).
- Other conditions impacting the immune system also increase susceptibility.
Observation:
- A fatal case of disseminated sporotrichosis occurred in a patient with liver disease.
- The patient had a granulomatous condition, presumed to be sarcoidosis.
- The patient was undergoing systemic corticosteroid therapy.
Findings:
- Sporothrix schenckii can cause disseminated disease in immunocompromised hosts.
- Liver disease and immunosuppression due to corticosteroid therapy are significant risk factors.
- Accurate histologic diagnosis is crucial for managing S. schenckii infections.
Implications:
- This case underscores the critical need for vigilance regarding opportunistic infections in immunocompromised patients.
- Early and accurate diagnosis of Sporothrix schenckii is vital for timely treatment and improved patient outcomes.
- Understanding the diverse clinical presentations of sporotrichosis is essential for clinicians managing at-risk populations.
Related Concept Videos
01:28Fungal 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...
01:26Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
01:28Toxoplasmosis
Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...
01:30Bacterial Phylum Spirochaetes
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased by a...
01:20Endospores and Sporulation
Endospores are specialized, dormant cells primarily formed by Gram-positive bacteria, including Bacillus and Clostridium, enabling survival under extreme environmental conditions. Due to their unique composition and formation process, these structures are highly resistant to physical and chemical insults, such as extreme heat, ultraviolet and ionizing radiation, desiccation, and toxic chemicals. Rare instances of endospore-like structures have also been observed in some Gram-negative bacteria,...
01:29Fungal Group Zygomycota
Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...