Objective: In the study, it is aimed to determine the prevalence of Acanthamoeba and other free-living amoeba (FLA) species in the swab samples obtained from conjunctiva and lower eye lid.
Methods: For this purpose, swab samples from the 500 patients'eye lid and conjunctiva were obtained who admitted to Cumhuriyet University, Research and Application Hospital, Department of Ophthalmology with variety of reasons. Swab samples were carried out using sterile cotton swab in steril tubes. The swab samples were inoculated onto non-nutrient agar (NNA). Live Escherichia coli was used as food source for the growth of the FLA. The NNA plates were incubated at 300C and examined daily using ligth microscope for two weeks. For morphotyping of the trophozoites and cysts of the FLA were used taxonomic keys.
Results: Two of the 500 swab samples (0.4%) were positive for FLA. One of them (0.2%) were identified as Acanthamoeba spp. and other was identified as Hartmannella spp. However, these patients did not reveal any complaints yet.
Conclusion: FLA both themselves and bacteria carrying in their body as reservoirs are potential pathogen. The rapid spread of Acanthamoeba keratitis in recent years reveal that these microorganisms are in contact with the eyes.
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http://dx.doi.org/10.5152/tpd.2015.4119 | DOI Listing |
Anal Chem
January 2025
Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China.
Isothermal nucleic acid amplification techniques are promising alternatives to polymerase chain reaction (PCR) for amplifying and detecting nucleic acids under resource-limited conditions. While many isothermal amplification strategies, such as recombinase polymerase amplification (RPA), offer comparable sensitivity to PCR, they often lack the specificity and robustness for discriminating single nucleotide variants (SNVs), mainly due to the uncontrolled production of massive amplicons. Herein, we introduce a mismatch-guided DNA assembly (MGDA) approach capable of discriminating SNVs in the presence of high concentrations of wild-type (WT) interferences.
View Article and Find Full Text PDFBMC Res Notes
January 2025
Leibniz Institute for the Analysis of Biodiversity Change, Museum Koenig Bonn, Centre for Molecular Biodiversity Research, Bonn, Germany.
Objective: Fin clipping is the standard DNA sampling technique for whole genome sequencing (WGS) of small fish. The collection of fin clips requires anaesthesia or even euthanisation of the individual. Swabbing may be a less invasive, non-lethal alternative to fin-clipping.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Microbiology, Division of Laboratory Medicine, Oslo University Hospital, 0372, Oslo, Norway.
The respiratory tract is colonized with low-density microbial communities, which have been shown to impact human respiratory health through microbiota-host interactions. However, a lack of fast and cost-effective nucleic acid extraction method for low-microbial biomass samples hinders investigation of respiratory microbiota. Here, we performed a pilot study to assess the suitability of the NAxtra nucleic acid extraction protocol for profiling bacterial microbiota in respiratory samples.
View Article and Find Full Text PDFEmerg Med J
January 2025
UK Health Security Agency, London, UK.
Background: Rapid identification of individuals with acute respiratory infections is crucial for preventing nosocomial infections. For rapid diagnosis, especially in EDs, lateral flow devices (LFDs) are a convenient, inexpensive option with a rapid turnaround. Several 'multiplex' LFDs (M-LFDs) now exist, testing for multiple pathogens from a single swab sample.
View Article and Find Full Text PDFEur J Pediatr
January 2025
Department of Biostatistics and Medical Informatics, Faculty of Medicine, Kocaeli University, Kocaeli, Turkey.
Unlabelled: This study aims to evaluate the clinical course of critical pertussis illness to the pediatric intensive care unit in Istanbul. The study was conducted as a multicenter, retrospective study between January 1, 2023, and December 31, 2023. Cases with positive polymerase chain reaction testing for Bordetella pertussis of nasopharyngeal swab samples within the first 24 h of pediatric intensive care unit admission were recorded.
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