Warthin-Starry Staining for the Detection of Helicobacter pylori in Gastric Biopsies

Warthin-Starry (WS) staining is an ancillary stain used in the detection of , spirochaete and other microorganisms in tissue sections. The present study aimed to determine the validity of WS stain in the confirmation of diagnosis in gastric biopsies in comparison with anti immunohistochemistry (IHC)...

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Bibliographic Details
Published in:The Malaysian journal of medical sciences 2018-07, Vol.25 (4), p.92-99
Main Authors: Farouk, Wirda Indah, Hassan, Nur Hidayah, Ismail, Teh Rasyidah, Daud, Intan Sufinaz, Mohammed, Fazarina
Format: Article
Language:English
Subjects:
Archives & records
Bacteria
Biopsy
Endoscopy
Gastroenterology
Hepatology
Histopathology
Identification
Infections
Laboratories
Microorganisms
Original
Phenols
Stains & staining
Stomach
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Summary:Warthin-Starry (WS) staining is an ancillary stain used in the detection of , spirochaete and other microorganisms in tissue sections. The present study aimed to determine the validity of WS stain in the confirmation of diagnosis in gastric biopsies in comparison with anti immunohistochemistry (IHC) staining. This study involved 104 cases of gastric biopsies that were previously subjected to WS staining. All cases involved retrieval of formalin-fixed paraffin-embedded (FFPE) gastric biopsies that were re-cut, subjected to anti IHC staining and reviewed blindly by a pathologist. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of WS as compared to IHC were calculated. In this study, WS stain was less sensitive in detecting . The sensitivity, specificity, PPV and NPV for WS stain were 50.0%, 92.4%, 79.2% and 76.3%, respectively. The sensitivity of WS stain in the histopathology laboratory was lower than that described previously. Several external factors that might influence the results were identified. However, sufficient information on patients' history of treatment and medication would be required for the diagnosis or confirmation of the presence of in gastric biopsies by WS staining.
ISSN:1394-195X
2180-4303
DOI:10.21315/mjms2018.25.4.9