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Identification and Characterization of Acanthamoeba from Contact Lens Care Solutions and Hospital Environments in the Ophthalmology Wards and Operating Rooms in Southeastern Iran.
Acta Parasitol
January 2025
Research Center for Hydatid Disease in Iran, Institute of Infectious Diseases and Tropical Medicine, Afzalipour School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
Objective: Different Acanthamoeba species are among the most ubiquitous organisms causing serious diseases in humans including central nervous system (CNS) and eye infections. Contact lenses, lens care solutions and the hospital environments particularly the indoor and outdoor environments of ophthalmology wards where people are present with different types of eye diseases, are the potential sources of human infection. The purpose of the present study was the molecular investigation of free-living amoebae in the used contact lenses, lens care solutions and hospital samples from the ophthalmology wards and operating rooms in a referral hospital in southeastern Iran.
View Article and Find Full Text PDFAssessment of dynamics of pathogenic environmental T4 and T9 genotypes isolated from three recreational lakes in Klang Valley, Malaysia over the HaCaT cell monolayer.
J Water Health
December 2024
Centre for Medical Laboratory Technology Studies, Faculty of Health Sciences, Universiti Teknologi MARA, Puncak Alam Campus, Selangor, Malaysia; Microbiome Health and Environment (MiHeaRT), Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia E-mail:
Free-living amoebae of the genus are causative agents of keratitis and amoebic encephalitis. They are widely found in various ecological environments. Therefore, the present study brings results that can help to better understand the genotypes of the environmental isolates and their pathogenicity.
View Article and Find Full Text PDFFirst report on the long-term viability of species in unpreserved environmental freshwater samples stored at room temperature.
J Water Health
November 2024
Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne 50923, Germany; Medical School, Department of Basic and Clinical Science, University of Nicosia, Nicosia 2417, Cyprus.
Article Synopsis
- The study investigates the long-term viability of an opportunistic amoeba species in freshwater samples from the Philippines after being stored for 3 years at room temperature.
- Samples were filtered and cultured, revealing a 33% positivity rate for the amoeba, with various genotypes identified across different regions (Luzon, Visayas, Mindanao).
- The findings suggest that unpreserved water samples can remain viable for extended periods, posing a potential health risk due to the increased likelihood of human and animal contamination.
Morphological Characterization and Genotyping of Isolates From Oral and Nasal Samples of Cancer Patients in Kashan, Iran.
Can J Infect Dis Med Microbiol
November 2024
Infectious Diseases Research Center, Kashan University of Medical Sciences, Kashan, Isfahan, Iran.
species are recognized as the most prevalent free-living amoebae (FLA). They can cause granulomatous amebic encephalitis (GAE) and pulmonary and ocular infections. The present study aimed to isolate and identify genotypes in cancer patients referred to Kashan's hospitals in Central Iran.
View Article and Find Full Text PDFDrug modifications: graphene oxide-chitosan loading enhanced anti-amoebic effects of pentamidine and doxycycline.
Parasitol Res
November 2024
Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Subang Jaya 47500, Selangor, Malaysia.
Acanthamoeba castellanii is the causative pathogen of a severe eye infection, known as Acanthamoeba keratitis and a life-threatening brain infection, named granulomatous amoebic encephalitis. Current treatments are problematic and costly and exhibit limited efficacy against Acanthamoeba parasite, especially the cyst stage. In parallel to drug discovery and drug repurposing efforts, drug modification is also an important approach to tackle infections, especially against neglected parasites such as free-living amoebae: Acanthamoeba.
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