ArticleMolecular biology reports2024
Molecular identification and genetic variability of equine and bovine ocular setariasis in india: molecular profiling by mitochondrial genes.
Article in Molecular biology reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundOcular setariasis is an ectopic infection caused by a parasite under the genus Setaria. Adult worms belong to the Setariidae family and typically reside in the peritoneal cavity of ungulates. However, immature forms of these species may aberrantly migrate to the eyes of cattle, buffalo, goats, horses and several other hosts, leading to corneal opacity and blindness. Here, we have distinguished the Setaria digitata collected from both equine and buffalo hosts based on the morphology, molecular profiling of mitochondrial cytochrome c oxidase subunit 1 (Cox1), cytochrome c oxidase subunit 3 (Cox3) and, Nicotinamide Adenine Dinucleotide dehydrogenase subunit 1 (NAD1) genes. METHODS AND
resultsA single filarial worm was collected from the eye of one equine and one bovine host. These worms were then processed for morphological examination and DNA isolation. Cox1, Cox3 and NAD1 genes were amplified using specific primers and subjected to custom sequencing. The sequences were then used for multiple sequence alignment, assessment of entropy, similarity and haplotype diversity analysis. Key morphological features confirmed the worms collected were male and female Setaria digitata from equine and buffalo hosts, respectively. Cox1, Cox3 and NAD1 gene sequence analysis showed a close association of S.digitata Indian isolates with its counterparts from Sri Lanka and China isolates.
conclusionThe phylogram of bovine S. digitata sequences shows a close relationship to other equine S. digitata sequences, indicating the need for further in-depth studies on the prevalence of infection across various host species and intermediate hosts. Although the sequence results suggest that S. digitata is likely the causative agent of ocular setariasis in India, additional samples are needed to confirm this conclusion. Comprehensive analysis of the transcriptome and proteome of S. digitata from both bovine and equine hosts is necessary to explore variations in host-parasite interactions. These findings will aid in future parasite identification, investigations into vector prevalence in India, and the development of control measures against ocular setariasis.
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