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Japanese

Evaluation of adenovirus amplified detection kit using tears containing conjunctival exudate Tomohiro Ueno 1 , Tomoko Tsukahara-Kawamura 1 , Yusuke Saeki 1 , Yuko Shichida 1 , Hironori Migita 2 , Tsuguto Fujimoto 3 , Eiichi Uchio 1 1Department of Ophthalmology, Faculty of Medicine, Fukuoka University 2Mitiga Eye Clinic 3National Institute of Infectious Diseases pp.481-486
Published Date 2018/4/15
DOI https://doi.org/10.11477/mf.1410212648
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Abstract Purpose:Immunochromatography(IC)kit is widely used for the diagnosis of adenoviral conjunctivitis, but this needs conjunctival scraping for material collection. In this study, we evaluated a novel adenovirus(AdV)detection kit that used tears including conjunctival exudate without conjunctival scraping in comparison with a conventional IC kit.

Materials and Methods:Two kinds of rapid diagnosis kits were used on 93 cases who visited Fukuoka University Hospital Eye Center or Migita Eye Clinic between July 2017 and November 2017 and who were suspected for adenoviral conjunctivitis. The first kit(control kit)was a conventional IC kit for conjunctival scrapings. The other kit(test kit)was also an IC kit, but a physician pressed a filter paper strip on the conjunctiva to collect tear containing conjunctival exudate sample. The result was automatically obtained by specific reader which was based on silver amplification method in 15 minutes. Detection of AdV was carried out by real-time polymerase chain reaction method and its typing was done by direct sequencing.

Results:Adenovirus type 54 was detected in 55 eyes, and type 3 and type 19/64 was detected in 2 eyes, respectively. Sensitivity of control kit and test kit was 89.8% and 98.3%, respectively. Specificity of both kit was 100%. Significant difference was observed in the sensitivities of the two IC kits against PCR positivity(p<0.01).

Conclusions:Test kit using tears containing conjunctival exudate had less discomfort on patients in specimen collection. It also had higher sensitivity with a dedicated reader than that of the conventional IC kit. It was considered that the test kit was highly objective and useful.


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