Evidence map›Paper›PMID 15013996›Full record

ArticleClinical and diagnostic laboratory immunology2004

Molecular expression of a cysteine proteinase of Clonorchis sinensis and its application to an enzyme-linked immunosorbent assay for immunodiagnosis of clonorchiasis.

Isao Nagano, Fuquan Pei, Zhiliang Wu, Jun Wu, Huier Cui, Thidarut Boonmars, Yuzo Takahashi

Open access · diamondAbstract read
In one paragraph

Article in Clinical and diagnostic laboratory immunology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

25 citing papers in PubMed, 63 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

7 authors at 2 institutions in 2 countries.

Isao NaganoDepartment of Parasitology, Gifu University School of Medicine, Gifu, 500-8705 Japan. isao@cc.gifu-u.ac.jp
Fuquan Pei
Zhiliang Wu
Jun Wu
Huier Cui
Thidarut Boonmars
Yuzo Takahashi
Jiangsu Institute of Parasitic Diseases · CNGifu University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We produced a recombinant cysteine proteinase of Clonorchis sinensis and tested its value as an antigen for serologic diagnosis of C. sinensis infections. The predicted amino acid sequence of the cysteine proteinase of C. sinensis was 58, 48, and 40% identical to those of cathepsin L cysteine proteinases from Paragonimus westermani, Schistosoma japonicum, and Fasciola hepatica, respectively. Western blotting analysis showed that sera from patients infected with C. sinensis strongly reacted with the recombinant protein and that sera from patients infected with S. japonicum weakly reacted with the recombinant protein. Antibody against the recombinant protein stained proteins migrating at about 37 and 28 kDa in C. sinensis adult worm crude extracts. Immunostaining revealed that the cysteine proteinase of C. sinensis was located in the intestinal epithelial cells of the adult parasite and in intrauterine eggs. The specificity and sensitivity of the recombinant antigen or C. sinensis adult worm crude extracts were assessed by an enzyme-linked immunosorbent assay (ELISA) using serum samples from humans infected with different parasites, including 50 patients with clonorchiasis, and negative controls. The sensitivities of the ELISA with the recombinant antigen and C. sinensis adult worm crude extracts were 96 and 88%, respectively. The specificities of the ELISA with the recombinant antigen and C. sinensis adult worm crude extracts were 96.2 and 100%, respectively. The results suggested that the recombinant cysteine proteinase-based ELISA could provide a highly sensitive and specific assay for diagnosis of clonorchiasis.

Indexed as

Amino Acid SequenceAnimalsAntibodies, HelminthBlotting, WesternClonorchiasisClonorchis sinensisCross ReactionsCysteine EndopeptidasesEnzyme-Linked Immunosorbent AssayFishesHumansMolecular Sequence DataRabbitsRecombinant ProteinsSensitivity and SpecificityAntibodies, HelminthCysteine EndopeptidasesRecombinant Proteins

Identifiers

PMID15013996
PMCPMC371220
OpenAlexW2128671243

What OpenQuestion holds

Textmetadata
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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.