Infectious blood source alters early foregut infection and regurgitative transmission of Yersinia pestis by rodent fleas
Publication Date
January 22, 2018
Journal
PLOS Pathogens
Authors
David M. Bland, Clayton O. Jarrett, Christopher F. Bosio & B. Joseph Hinnebusch
Volume
14
Issue
1
Pages
e1006859
DOI
https://dx.plos.org/10.1371/journal.ppat.1006859
Publisher URL
http://journals.plos.org/plospathogens/article?id=10.1371%2Fjournal.ppat.1006859
Scopus
85041675321
Mendeley
http://www.mendeley.com/research/infectious-blood-source-alters-early-foregut-infection-regurgitative-transmission-yersinia-pestis-ro
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Mendeley | Further Information

{"title"=>"Infectious blood source alters early foregut infection and regurgitative transmission of Yersinia pestis by rodent fleas", "type"=>"journal", "authors"=>[{"first_name"=>"David M.", "last_name"=>"Bland", "scopus_author_id"=>"41860973900"}, {"first_name"=>"Clayton O.", "last_name"=>"Jarrett", "scopus_author_id"=>"7003302317"}, {"first_name"=>"Christopher F.", "last_name"=>"Bosio", "scopus_author_id"=>"7005998729"}, {"first_name"=>"B. Joseph", "last_name"=>"Hinnebusch", "scopus_author_id"=>"6701454666"}], "year"=>2018, "source"=>"PLoS Pathogens", "identifiers"=>{"issn"=>"15537374", "scopus"=>"2-s2.0-85041675321", "pmid"=>"29357385", "doi"=>"10.1371/journal.ppat.1006859", "pui"=>"620571121", "isbn"=>"1111111111", "sgr"=>"85041675321"}, "id"=>"e4040838-15c4-34f7-be3e-a83f4c051361", "abstract"=>"Fleas can transmit Yersinia pestis by two mechanisms, early-phase transmission (EPT) and biofilm-dependent transmission (BDT). Transmission efficiency varies among flea species and the results from different studies have not always been consistent. One complicating variable is the species of rodent blood used for the infectious blood meal. To gain insight into the mechanism of EPT and the effect that host blood has on it, fleas were fed bacteremic mouse, rat, guinea pig, or gerbil blood; and the location and characteristics of the infection in the digestive tract and transmissibility of Y. pestis were assessed 1 to 3 days after infection. Surprisingly, 10-28% of two rodent flea species fed bacteremic rat or guinea pig blood refluxed a portion of the infected blood meal into the esophagus within 24 h of feeding. We term this phenomenon post-infection esophageal reflux (PIER). In contrast, PIER was rarely observed in rodent fleas fed bacteremic mouse or gerbil blood. PIER correlated with the accumulation of a dense mixed aggregate of Y. pestis, red blood cell stroma, and oxyhemoglobin crystals that filled the proventriculus. At their next feeding, fleas with PIER were 3-25 times more likely to appear partially blocked, with fresh blood retained within the esophagus, than were fleas without PIER. Three days after feeding on bacteremic rat blood, groups of Oropsylla montana transmitted significantly more CFU than did groups infected using mouse blood, and this enhanced transmission was biofilm-dependent. Our data support a model in which EPT results from regurgitation of Y. pestis from a partially obstructed flea foregut and that EPT and BDT can sometimes temporally overlap. The relative insolubility of the hemoglobin of rats and Sciurids and the slower digestion of their blood appears to promote regurgitative transmission, which may be one reason why these rodents are particularly prominent in plague ecology.", "link"=>"http://www.mendeley.com/research/infectious-blood-source-alters-early-foregut-infection-regurgitative-transmission-yersinia-pestis-ro", "reader_count"=>7, "reader_count_by_academic_status"=>{"Researcher"=>2, "Student > Ph. D. Student"=>1, "Student > Master"=>2, "Student > Bachelor"=>1, "Lecturer"=>1}, "reader_count_by_user_role"=>{"Researcher"=>2, "Student > Ph. D. Student"=>1, "Student > Master"=>2, "Student > Bachelor"=>1, "Lecturer"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Agricultural and Biological Sciences"=>3, "Medicine and Dentistry"=>1, "Immunology and Microbiology"=>2}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>1}, "Immunology and Microbiology"=>{"Immunology and Microbiology"=>2}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>3}, "Unspecified"=>{"Unspecified"=>1}}, "group_count"=>0}

Scopus | Further Information

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