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Molecular survey of spp. and spp. in felids using a novel real-time PCR approach. | LitMetric

AI Article Synopsis

  • The study investigates Tick-transmitted apicomplexans affecting various felid species, focusing on their detection, distribution, and host involvement in northeastern Italy using a more efficient real-time PCR method.* -
  • Researchers analyzed 237 samples from domestic cats, exotic captive felids, and wildcats, finding specific prevalence rates for different apicomplexan species, particularly noting higher rates in domestic cats and stray felines.* -
  • Results indicated that outdoor lifestyles and geographical factors significantly influenced the occurrence of these parasites, with specific species detected in stray cats from the Friuli-Venezia Giulia region.*

Article Abstract

Tick-transmitted apicomplexans of the genera and affect a wide range of felids worldwide, but little is known about them. Recently, several studies addressed the species circulating in Europe, their distribution, and their hosts. Molecular assays are the method of choice for their detection. Unfortunately, conventional PCRs already described are time- and cost-consuming and specific for either or detection. This study was developed to evaluate (i) the occurrence of and in felids using a fast and cost-saving real-time PCR capable of detecting both protozoa simultaneously, (ii) the distribution of and species in north-eastern Italy, and (iii) the involvement of other susceptible felid hosts in the same area. An SYBR Green-based real-time PCR with primers targeting the 18S-rRNA was validated and applied to 237 felid samples, i.e., whole blood from 206 domestic cats and 12 captive exotic felids, and tissues from 19 wildcats. Positive results were obtained by melting temperature curve analysis due to the specific melting peak (i.e., 81°C spp.; 78-78.5°C spp.). Positive samples were subjected to conventional PCR, followed by sequencing for species identification. Phylogenetic analyses were performed to assess relatedness among European isolates. Data on domestic cats (age class, sex, origin, management, and lifestyle) were recorded, and statistical analyses were performed to identify potential risk factors. A total of 31 (15%) domestic cats were positive for spp. (i.e., 12 for 19 for ), while six (2.9%) for . The prevalence of was significantly ( < 0.05) higher in domestic cats, while was higher in strays and animals from the Eastern region (i.e., Friuli-Venezia Giulia). was detected only in stray cats from Friuli-Venezia Giulia (province of Trieste). Among captive felids, one tiger was infected with and another with ; eight out of 19 (42%) wildcats were positive for spp. (i.e., six with , two with ) and four out of 19 (21%) for . Outdoor lifestyle and origin (i.e., Friuli-Venezia Giulia region) were the most relevant risk factors for and infections. Conversely, was most frequently isolated from domestic cats, suggesting different modes of transmission.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10291185PMC
http://dx.doi.org/10.3389/fvets.2023.1113681DOI Listing

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