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Article Abstract
Background: Primary amoebic meningoencephalitis (PAM) is an acute and fulminant CNS infection caused by . Recreational activities and ritual ablution with contaminated warm fresh water are the main reason of PAM. Pakistan ranked the second most affected country, where most of the PAM incidences were reported from Karachi, Pakistan.
Methods: In May, 2019, a 28-yr-old suspected PAM patient came to the Imam Zain-Ul-Abdin Hospital, Karachi. Biochemical and cytological investigations of patient's CSF were carried out at Karachi Diagnostic Center and Molecular Biology Lab. Sequencing of sp. specific (ITS) primer-based amplicons was performed from both patient's CSF and water samples followed by multiple sequence alignment and phylogenetic studies.
Results: Biochemical and cytological investigations of patient's CSF showed 5 mg/dl glucose, 240 mg/dl total protein and 2260/mm TLC suggesting acute meningoencephalitis. PCR-based analyses of patient's CSF and his residential tap water samples using sp. specific (ITS) and specific primers revealed the presence of DNA. Nucleotide sequences of ITS primer-based amplicons from both patient's CSF and water samples were submitted in GenBank under the accession numbers MT726981.1 and MT726226.1, respectively. According to phylogenetic analysis, isolate from Pakistan has shown the least node age of seven.
Conclusion: Here, for the very first time in Pakistan, genotype has been identified as type-2. Phylogenetic analysis showed that isolate from Pakistan is among the latest descendants, i.e., evolved later in life.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9375727 | PMC |
| http://dx.doi.org/10.18502/ijpa.v17i1.9015 | DOI Listing |
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