Encephalitozoon cuniculi Microsporidia in Cerebrospinal Fluid from Immunocompetent Patients, Czech Republic

PubMed

Insights

Encephalitozoon cuniculi infections were found in 6 of 211 cerebrospinal fluid samples from immunocompetent individuals in the Czech Republic. Early detection of microsporidiosis is crucial to prevent severe complications in all patients.

Area of Science:

  • Medical Microbiology
  • Parasitology
  • Clinical Diagnostics

Background:

  • Microsporidiosis, caused by Encephalitozoon cuniculi, is an opportunistic infection often overlooked in clinical practice.
  • Latent infections can lead to severe complications, particularly in immunocompromised individuals, but also in immunocompetent hosts.

Purpose of the Study:

  • To investigate the prevalence of Encephalitozoon cuniculi in cerebrospinal fluid samples from immunocompetent individuals in the Czech Republic.
  • To highlight the underestimation of microsporidiosis and the importance of diagnostic testing.

Main Methods:

  • Retrospective analysis of 211 frozen cerebrospinal fluid (CSF) samples.
  • Detection of Encephalitozoon cuniculi DNA or antigens (specific method not detailed in abstract).

Main Results:

  • Six out of 211 (2.8%) cerebrospinal fluid samples tested positive for Encephalitozoon cuniculi.
  • The study identified a previously unrecognized prevalence of E. cuniculi in the studied population.

Conclusions:

  • Encephalitozoon cuniculi infection is present in immunocompetent individuals in the Czech Republic.
  • Microsporidiosis is underdiagnosed and warrants greater clinical attention.
  • Timely diagnosis and treatment are essential to manage potential complications of latent infections.

Related Concept Videos

Fungal Phylum Microsporidia01:28

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...
Viral Meningitis01:18

Viral Meningitis

Viral meningitis is the most common form of meningitis and is often referred to as aseptic meningitis to indicate the absence of bacterial involvement. It is generally milder than bacterial meningitis, with symptoms including fever, headache, stiff neck, drowsiness, nausea, photophobia, and vomiting. Rarely, more severe manifestations or death may occur. Common causative agents include enteroviruses, particularly coxsackie A and B viruses and echoviruses, all members of the Enterovirus genus...
Cryptococcal Meningitis01:27

Cryptococcal Meningitis

Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Toxoplasmosis01:28

Toxoplasmosis

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...
Encephalitis l: Introduction01:19

Encephalitis l: Introduction

Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...