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Van den Poel B, Gils S, Micalessi I, Carton S, Christiaens P, Cuyle PJ, Moons V, Van Olmen G, Smismans A, Bourgain C, Bossuyt P, Frans J. Molecular detection of Helicobacter pylori and clarithromycin resistance in gastric biopsies: a prospective evaluation of RIDA®GENE Helicobacter pylori assay. Acta Clin Belg 2021; 76:177-183. [PMID: 31662122 DOI: 10.1080/17843286.2019.1685741] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background: Empirical treatment of Helicobacter pylori (HP) depends on the local prevalence of clarithromycin resistance but data are lacking and culturing of HP is time-consuming. We evaluated RIDA®GENE Helicobacter pylori assay (r-biopharm), a quantitative PCR assay for detecting HP and clarithromycin resistance mutations in gastric biopsies.Material/methods: Gastric biopsies were obtained from each of 436 consecutive patients referred for gastroscopic investigation and results of qPCR were compared to culture and immunohistochemical staining (IHCS).Results: Of 436 samples, 47 were positive for HP by PCR (11%), 42 by culture (9.7%) and 44 by IHCS (10%). Compared to culture, sensitivity and specificity of the qPCR were 100% and 99%, respectively, and 96% and 99% compared to IHCS. The sensitivity and specificity for clarithromycin resistance detection were 92% and 97%, respectively.Conclusions: RIDA®GENE Helicobacter pylori assay reliably and rapidly detects HP and its resistance to clarithromycin in human gastric biopsies.
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Affiliation(s)
- Bea Van den Poel
- Department of Laboratory Medicine, Imelda General Hospital, Bonheiden, Belgium
| | - Sarah Gils
- Department of Laboratory Medicine, Imelda General Hospital, Bonheiden, Belgium
| | - Isabel Micalessi
- Department of Laboratory Medicine, Imelda General Hospital, Bonheiden, Belgium
| | - Saskia Carton
- Department of Gastroenterology, Imelda General Hospital, Bonheiden, Belgium
| | - Paul Christiaens
- Department of Gastroenterology, Imelda General Hospital, Bonheiden, Belgium
| | - Pieter-Jan Cuyle
- Department of Gastroenterology, Imelda General Hospital, Bonheiden, Belgium
| | - Veerle Moons
- Department of Gastroenterology, Imelda General Hospital, Bonheiden, Belgium
| | - Gust Van Olmen
- Department of Gastroenterology, Imelda General Hospital, Bonheiden, Belgium
| | - Annick Smismans
- Department of Laboratory Medicine, Imelda General Hospital, Bonheiden, Belgium
| | - Claire Bourgain
- Department of Pathology, Imelda General Hospital, Bonheiden, Belgium
| | - Peter Bossuyt
- Department of Gastroenterology, Imelda General Hospital, Bonheiden, Belgium
| | - Johan Frans
- Department of Laboratory Medicine, Imelda General Hospital, Bonheiden, Belgium
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