Related Experiment Video

Updated: Oct 7, 2026

Macrophage Cholesterol Depletion and Its Effect on the Phagocytosis of Cryptococcus neoformans
11:07

Macrophage Cholesterol Depletion and Its Effect on the Phagocytosis of Cryptococcus neoformans

Published on: December 19, 2014

[Cryptococcosis]

F Dromer1

  • 1Unité de mycologie Centre national de référence des mycoses humaines et des antifongiques Institut Pasteur 75724 Paris 15. dromer@pasteur.fr

La Revue Du Praticien
|June 5, 2001
PubMed

Insights

Cryptococcus neoformans causes severe infections, particularly meningoencephalitis, in immunocompromised individuals like those with AIDS. Early diagnosis and targeted antifungal therapy, including amphotericin B and fluconazole, are crucial for managing this opportunistic fungal infection.

Area of Science:

  • Medical Mycology
  • Infectious Diseases
  • Immunology

Context:

  • Cryptococcus neoformans is an encapsulated yeast causing life-threatening infections.
  • Patients with compromised cellular immunity, especially those with Acquired Immunodeficiency Syndrome (AIDS), are at high risk.
  • Disseminated meningoencephalitis is the most common presentation of cryptococcosis, often without acute onset.

Purpose:

  • To outline diagnostic methods for cryptococcosis.
  • To emphasize the importance of identifying secondary infection sites and prognostic factors.
  • To guide appropriate treatment strategies for cryptococcal infections.

Summary:

  • Diagnosis involves India ink staining, polysaccharide antigen detection, culture, and histology.
  • Prognostic factors and additional infection sites must be assessed before treatment.
  • Meningitis treatment requires amphotericin B and 5-fluorocytosine, followed by fluconazole, potentially for lifelong maintenance in immune-deficient patients.

Impact:

  • Improved diagnostic accuracy for cryptococcosis.
  • Optimized treatment selection based on clinical presentation and patient factors.
  • Enhanced patient outcomes through effective and prolonged antifungal therapy, reducing mortality and morbidity.

More Related Videos

Automated Measurement of Cryptococcal Species Polysaccharide Capsule and Cell Body08:08

Automated Measurement of Cryptococcal Species Polysaccharide Capsule and Cell Body

Published on: January 11, 2018

Related Concept Videos

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,...
Candidiasis01:20

Candidiasis

Candidiasis is a fungal infection caused by opportunistic species of Candida. It can affect various anatomical sites, including the skin, oral cavity, nails, and genitourinary tract. Among its forms, vaginal candidiasis is the most common type of mucosal infection. It typically results from the overgrowth of Candida albicans in the vaginal mucosa. Under normal conditions, C. albicans exists as a commensal organism within the vaginal microbiota, regulated by the dominance of lactobacilli, which...
Pneumonia II: Pathophysiology01:29

Pneumonia II: Pathophysiology

The pathophysiology of pneumonia involves the following steps:
Skin Diseases and Disorders01:23

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Atypical Pneumonia01:14

Atypical Pneumonia

Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...
Antifungal Agents01:15

Antifungal Agents

Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...