Pathogenesis of Acanthamoeba infections

Naveed Ahmed Khan1

  • 1School of Biological and Chemical Sciences, Birkbeck College, University of London, London WC1E 7HX, UK. n.khan@sbc.bbk.ac.uk

Insights

Acanthamoeba are opportunistic pathogens that cause serious infections, especially in contact lens wearers and AIDS patients. Understanding their complex pathogenesis is key to developing new treatments.

Area of Science:

  • Microbiology
  • Pathogenesis
  • Ophthalmology

Background:

  • Acanthamoeba are ubiquitous free-living protozoa.
  • They are opportunistic pathogens causing severe infections, including keratitis and encephalitis.
  • Infections are increasing due to contact lens use and immunocompromised individuals (e.g., AIDS patients).

Purpose of the Study:

  • To explore the complex pathogenic mechanisms of Acanthamoeba.
  • To identify factors influencing Acanthamoeba infections.
  • To lay the groundwork for developing novel therapeutic interventions.

Main Methods:

  • This study focuses on the elucidation of Acanthamoeba pathogenesis.
  • It involves analyzing parasite, host, and environmental factors.
  • Biochemical, cellular, and molecular mechanisms are investigated.

Main Results:

  • Acanthamoeba pathogenesis is highly complex.
  • Multiple factors (parasite, host, environment) contribute to disease.
  • Understanding these mechanisms is crucial for treatment development.

Conclusions:

  • Acanthamoeba pose a significant threat as opportunistic pathogens.
  • Further research into their pathogenesis is essential.
  • Elucidating these mechanisms will facilitate the development of effective therapies.

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...
Diversity of Protists II01:27

Diversity of Protists II

Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
Diversity of Protists IV01:27

Diversity of Protists IV

Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
Leishmaniasis01:30

Leishmaniasis

Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
Giardiasis01:12

Giardiasis

Giardiasis is a globally prevalent intestinal infection caused by the protozoan parasite Giardia duodenalis (also known as G. lamblia or G. intestinalis). This flagellated protozoan is the most frequently identified intestinal parasite in the United States and worldwide. Transmission primarily occurs via the fecal-oral route, with infection arising from ingestion of water or food contaminated with cysts. Individuals in low-resource settings, international travelers, outdoor enthusiasts, daycare...
Amebiasis01:28

Amebiasis

Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...