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First Molecular Detection of Francisella-like Endosymbionts in Hyalomma and Rhipicephalus Tick Species Collected from Vertebrate Hosts from Sardinia Island, Italy

Overview
Journal Exp Appl Acarol
Specialties Biology
Parasitology
Date 2019 Oct 26
PMID 31650337
Citations 1
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Abstract

Ticks are vectors of a wide variety of human and animal pathogens as well as non-pathogenic microorganisms acting as endosymbionts and whose role in ticks is still little known. Symbionts such as Francisella-like endosymbionts (FLEs) are members of Francisellaceae family with unknown pathogenicity, detected in both hard and soft ticks. A total of 236 ticks collected from several sites in Sardinia were screened for Francisella species by PCR using primers targeting a fragment of the 16S rRNA gene. DNA of Francisella was detected in 5.1% (12/236) of the ticks tested. Sequencing results revealed that seven Rhipicephalus sanguineus s.l., three Hyalomma marginatum, one Hy. lusitanicum, and one Rh. bursa ticks exhibited DNA with 99-100% similarity to Francisella-like endosymbionts isolated from different tick species all over the world. Further research is needed in order to better characterize FLE strains obtained in Sardinia and to better understand if their presence could be related to the infection with other zoonotic pathogens.

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References
1.
Gerhart J, Moses A, Raghavan R . A Francisella-like endosymbiont in the Gulf Coast tick evolved from a mammalian pathogen. Sci Rep. 2016; 6:33670. PMC: 5028885. DOI: 10.1038/srep33670. View

2.
Kimura M . A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences. J Mol Evol. 1980; 16(2):111-20. DOI: 10.1007/BF01731581. View

3.
Szigeti A, Kreizinger Z, Hornok S, Abichu G, Gyuranecz M . Detection of Francisella-like endosymbiont in Hyalomma rufipes from Ethiopia. Ticks Tick Borne Dis. 2014; 5(6):818-20. DOI: 10.1016/j.ttbdis.2014.06.002. View

4.
Chisu V, Foxi C, Mannu R, Satta G, Masala G . A five-year survey of tick species and identification of tick-borne bacteria in Sardinia, Italy. Ticks Tick Borne Dis. 2018; 9(3):678-681. DOI: 10.1016/j.ttbdis.2018.02.008. View

5.
Pistone D, Pajoro M, Novakova E, Vicari N, Gaiardelli C, Vigano R . Ticks and bacterial tick-borne pathogens in Piemonte region, Northwest Italy. Exp Appl Acarol. 2017; 73(3-4):477-491. DOI: 10.1007/s10493-017-0202-2. View