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Development of a LAMP assay for detection of Leishmania infantum infection in dogs using conjunctival swab samples

Overview of attention for article published in Parasites & Vectors, July 2015
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  • Good Attention Score compared to outputs of the same age (66th percentile)
  • Good Attention Score compared to outputs of the same age and source (66th percentile)

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Title
Development of a LAMP assay for detection of Leishmania infantum infection in dogs using conjunctival swab samples
Published in
Parasites & Vectors, July 2015
DOI 10.1186/s13071-015-0991-2
Pubmed ID
Authors

Chun-hua Gao, Dan Ding, Jun-yun Wang, Dietmar Steverding, Xia Wang, Yue-tao Yang, Feng Shi

Abstract

Leishmania infantum infections in dogs play a crucial role in the transmission of pathogens causing visceral leishmaniasis to humans in the Gansu province, northwest China. To be able to control zoonotic transmission of the parasite to humans, a non-invasive loop-mediated isothermal amplification (LAMP) assay to specifically detect L. infantum infections in dogs was developed. The primers used in the LAMP assay were designed to target kinetoplast DNA minicircle sequences of the L. infantum isolate MCAN/CN/90/SC and tested using DNA isolated from promastigotes of different Leishmania species. The LAMP assay was evaluated with conjunctional swab samples obtained from 111 and 33 dogs living in an endemic and a non-endemic region of zoonotic visceral leishmaniasis in the Gansu province, respectively. The LAMP assay was also compared with conventional PCR, ELISA and microscopy using conjunctional swab, serum and bone marrow samples from the dogs, respectively. The LAMP assay detected 1 fg of L. infantum DNA purified from cultured promastigotes which was 10-fold more sensitive than a conventional PCR test using Leishmania genus-specific primers. No cross reaction was observed with DNA isolated from promastigotes of L. donovani, L. major, L. tropica, and L. braziliensis, and the L. infantum reference strain MHOM/TN/80/IPT1. The L. infantum-positive rates obtained for field-collected samples were 61.3 %, 58.6 %, 40.5 % and 10.8 % by LAMP, PCR, ELISA and microscopy, respectively. As only one out of the 33 samples from control dogs from the non-endemic region of zoonotic visceral leishmaniasis was positive by the LAMP assay and the PCR test, the observed true negative rate (specificity) was 97 % for both methods. This study has shown that the non-invasive, conjunctional swab-based LAMP assay developed was more sensitive in the detection of leishmaniasis in dogs than PCR, ELISA and microscopy. The findings indicate that the LAMP assay is a sensitive and specific method for the field surveillance of domestic dogs, particularly of asymptomatic canines, in ZVL-endemic areas in western China.

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X Demographics

The data shown below were collected from the profiles of 4 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 103 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Spain 1 <1%
Ecuador 1 <1%
Brazil 1 <1%
Unknown 100 97%

Demographic breakdown

Readers by professional status Count As %
Researcher 25 24%
Student > Master 17 17%
Student > Ph. D. Student 15 15%
Student > Doctoral Student 7 7%
Student > Bachelor 6 6%
Other 15 15%
Unknown 18 17%
Readers by discipline Count As %
Agricultural and Biological Sciences 18 17%
Veterinary Science and Veterinary Medicine 17 17%
Biochemistry, Genetics and Molecular Biology 16 16%
Medicine and Dentistry 13 13%
Immunology and Microbiology 4 4%
Other 10 10%
Unknown 25 24%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 18 March 2016.
All research outputs
#7,218,684
of 22,817,213 outputs
Outputs from Parasites & Vectors
#1,736
of 5,461 outputs
Outputs of similar age
#84,985
of 262,607 outputs
Outputs of similar age from Parasites & Vectors
#34
of 115 outputs
Altmetric has tracked 22,817,213 research outputs across all sources so far. This one has received more attention than most of these and is in the 67th percentile.
So far Altmetric has tracked 5,461 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.7. This one has gotten more attention than average, scoring higher than 66% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 262,607 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 66% of its contemporaries.
We're also able to compare this research output to 115 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 66% of its contemporaries.