Evidence map›Paper›PMID 27267467›Full record

ArticleParasites & vectors2016

First detection of Candidatus Rickettsia barbariae in the flea Vermipsylla alakurt from north-western China.

Shan-Shan Zhao, Hong-Yu Li, Xiao-Ping Yin, Zhi-Qiang Liu, Chuang-Fu Chen, Yuan-Zhi Wang

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
4.2field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 25 citations in OpenAlex.

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  4. Molecular Detection ofAnimals : an open access journal from MDPI · 2024
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  6. International journal for parasitology. Parasites and wildlife · 2024
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  11. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Shan-Shan ZhaoSchool of Medicine, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region, 832000, China.
Hong-Yu LiSchool of Medicine, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region, 832000, China.
Xiao-Ping YinAlashankou Entry-Exit Inspection and Quarantine Bureau, Alashankou, 833418, China.
Zhi-Qiang LiuCollege of Animal Science and Technology, Shihezi University, Shihezi, 832000, China.
Chuang-Fu ChenCollege of Animal Science and Technology, Shihezi University, Shihezi, 832000, China.
Yuan-Zhi WangSchool of Medicine, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region, 832000, China. wangyuanzhi621@126.com.
Shihezi University · CNEntry Exit Inspection and Quarantine Bureau · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVermipsylla is a genus of the family Vermipsyllidae within the order Siphonaptera of fleas. Vermipsylla alakurt is mainly distributed in alpine pastoral areas of Kazakhstan, Mongolia, China and Nepal, and infests sheep, yaks and horses, causing irritation, poor condition, anaemia and even death. However, to date, no rickettsial agents have been reported in V. alakurt.

findingsA total of 133 fleas were collected directly from the tails of three sheep flocks (n = 335) in Minfeng County, Xinjiang Uygur Autonomous Region, north-western China. Of these, 55 fleas were identified by morphological examination and molecular analysis of four loci (the ribosomal 18S and 28S rDNA genes and the mitochondrial genes cytochrome  c oxidase subunit II and elongation factor 1-alpha). Eight Rickettsia-specific gene fragments originated from seven genes: the 17-kilodalton antigen gene (17-kDa), citrate synthase gene (gltA), 16S rRNA gene (rrs), outer membrane protein A gene (ompA), surface cell antigen 1 gene (sca1), PS120 protein gene (gene D), and outer membrane protein B gene (ompB, two fragments), were used to identify the species of Rickettsia in 53 fleas. The amplified products were sequenced and included in a phylogenetic analysis to verify the taxonomic identification of the rickettsial agents. Based on morphological and molecular evidence, the flea was identified as Vermipsylla alakurt. Nine samples were positive (16.98 %, 9/53) for Rickettsia spp. The phylogenetic tree revealed that the rickettsial agents found in V. alakurt cluster with Candidatus Rickettsia barbariae.

conclusionsOur study suggests that: (i) V. alakurt may serve as a carrier for Candidatus R. barbariae; and (ii) Candidatus R. barbariae, previously reported in Israel, is the eighth newly discovered validated Rickettsia species in China. This finding extends our knowledge of the distribution of Candidatus R. barbariae and the profile of carriers, which not only comprise ticks but also fleas.

Indexed as

AnimalsChinaDNA, BacterialFemaleFlea InfestationsHost-Pathogen InteractionsInsect VectorsMalePhylogenyRickettsiaRickettsia InfectionsRNA, BacterialRNA, Ribosomal, 18SRNA, Ribosomal, 28SSheepSheep DiseasesDNA, BacterialRNA, BacterialRNA, Ribosomal, 18SRNA, Ribosomal, 28SCandidatus Rickettsia barbariaeNorth-western ChinaVermipsylla alakurt

Identifiers

PMID27267467
PMCPMC4895814
OpenAlexW2416354063

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.