Evidence map›Paper›PMID 11553557›Full record

ArticleInfection and immunity2001

Transcriptional analysis of p30 major outer membrane multigene family of Ehrlichia canis in dogs, ticks, and cell culture at different temperatures.

A Unver, N Ohashi, T Tajima, R W Stich, D Grover, Y Rikihisa

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In one paragraph

Article in Infection and immunity, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 43 citations in OpenAlex.

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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 1 institution in 1 country.

A UnverDepartment of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio 43210-1093, USA.
N Ohashi
T Tajima
R W Stich
D Grover
Y Rikihisa
The Ohio State University · US

Funding

GENE EXPRESSION BY HUMAN GRANULOCYTIC EHRLICHIOSIS AGR01AI047407 · NIAID · OHIO STATE UNIVERSITY · PI RIKIHISA, YASUKO · 2000 to 2004
$1.6M
ROLES OF EHRLICHIAL OUTER MEMBRANE PROTEIN IN PARASITISMR01AI040934 · NIAID · OHIO STATE UNIVERSITY · PI RIKIHISA, YASUKO · 1997 to 2001
$406k
NIAID NIH HHS R01 AI047407NIAID NIH HHS R01AI40934NIAID NIH HHS R01AI47407
6 · The paper itself

Abstract

Ehrlichia canis, an obligatory intracellular bacterium of monocytes and macrophages, causes canine monocytic ehrlichiosis. E. canis immunodominant 30-kDa major outer membrane proteins are encoded by a polymorphic multigene family consisting of more than 20 paralogs. In the present study, we analyzed the mRNA expression of 14 paralogs in experimentally infected dogs and Rhipicephalus sanguineus ticks by reverse transcription-PCR using gene-specific primers followed by Southern blotting. Eleven out of 14 paralogs in E. canis were transcribed in increasing numbers and transcription levels, while the mRNA expression of the 3 remaining paralogs was not detected in blood monocytes of infected dogs during the 56-day postinoculation period. Three different groups of R. sanguineus ticks (adult males and females and nymphs) were separately infected with E. canis by feeding on the infected dogs. In these pools of acquisition-fed ticks as well as in the transmission-fed adult ticks, the transcript from only one paralog was detected, suggesting the predominant transcription of that paralog or the suppression of the remaining paralogs in ticks. Expression of the same paralog was higher whereas expression of the remaining paralogs was lower in E. canis cultivated in dog monocyte cell line DH82 at 25 degrees C than in E. canis cultivated at 37 degrees C. Analysis of differential expression of p30 multigenes in dogs, ticks, or monocyte cell cultures would help in understanding the role of these gene products in pathogenesis and E. canis transmission as well as in designing a rational vaccine candidate immunogenic against canine ehrlichiosis.

Indexed as

Gene Expression Regulation, BacterialMultigene FamilyTranscription, GeneticAnimalsAntigens, BacterialBacterial Outer Membrane ProteinsBlotting, SouthernCell Culture TechniquesCell LineDisease Models, AnimalDogsEhrlichiaEhrlichiosisFemaleGenes, BacterialMaleAntigens, BacterialBacterial Outer Membrane ProteinsRNA, BacterialRNA, Messenger

Identifiers

PMID11553557
PMCPMC98748
OpenAlexW2128441606

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.