Related Experiment Video
Updated: Aug 12, 2026

A Thin-skull Window Technique for Chronic Two-photon In vivo Imaging of Murine Microglia in Models of Neuroinflammation
Published on: September 19, 2010
[Cryptococcal meningoencephalitis in HIV infected immigrants. Diagnostic and therapeutic aspects with reference to
B M Weltermann1, H R Röttgers, P Lüdemann
1Klinik und Poliklinik für Neurologie, Westfälische Wilhelms-Universität Münster.
Abstract:
Cryptococcal meningitis is one of the most frequent forms of meningoencephalitis in AIDS patients. Before the introduction of triazole antibiotics like difluconazole, the frequency of this meningitis among AIDS patients was 5-10%, yet declined during the last years. Clinically, nonspecific signs of a meningeal inflammation predominate while focal neurological signs are rare. Rapid institution of high-dose antimycotic therapy is the keystone to improve prognosis and decrease mortality. Antimycotics of choice are amphotericin B, fluconazole, and flucytosin. Diagnosis is established by detection of cryptococcal antigen in cerebrospinal fluid, microscopic demonstration of cryptococci using India-ink, and cryptococcal cultures. Recent developments aim to improve antimycotic therapies. During the last years, lifelong secondary prevention with difluconazole was established. Cryptococci which are resistant against fluconazole and amphotericin B are a special challenge, yet fortunately are rare. Longterm outcome of patients is determined by the progression of the underlying immunosuppression. Therefore, combination of secondary prophylaxis with modern antiviral substances is important. Clinical decision analysis in patients with suspected cryptococcal meningitis is presented using methods from evidence-based medicine.
Insights
Cryptococcal meningitis, a common complication in AIDS patients, requires prompt antifungal treatment. Lifelong secondary prevention with fluconazole improves outcomes, though rare resistant strains pose challenges.
Area of Science:
- Infectious Diseases
- Neurology
- Immunology
Background:
- Cryptococcal meningitis is a frequent meningoencephalitis in Human Immunodeficiency Virus (HIV) / Acquired Immunodeficiency Syndrome (AIDS) patients.
- Before triazole antibiotics, incidence was 5-10%, declining with newer treatments like fluconazole.
- Nonspecific meningeal signs dominate; focal neurological deficits are uncommon.
Observation:
- Diagnosis relies on cryptococcal antigen detection in cerebrospinal fluid (CSF), India-ink microscopy, and cultures.
- High-dose antimycotic therapy, including amphotericin B, fluconazole, and flucytosine, is crucial for prognosis.
- Lifelong secondary prophylaxis with fluconazole is now standard practice.
Findings:
- Recent advancements focus on improving antimycotic therapies.
- Fluconazole-resistant and amphotericin B-resistant *Cryptococcus* strains are rare but challenging.
- Long-term patient outcomes depend heavily on managing the underlying immunosuppression.
Implications:
- Combining secondary prophylaxis with modern antiviral therapies is vital for managing AIDS patients with cryptococcal meningitis.
- Evidence-based medicine and clinical decision analysis aid in managing suspected cases.
- Continued research into novel antimycotic strategies is necessary to combat resistant fungal infections.
Related Concept Videos
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Fungal Phylum Microsporidia
Cryptococcal Meningitis
Toxoplasmosis
Amebiasis
Encephalitis l: Introduction

