alexa Comparison of Direct Immunofluorescence (DIF) Method and Giemsa Staining with PCR Method for Detection of Chlamydia trachomatis in Patients with Follicular Conjunctivitis | Abstract
ISSN: 2161-0703

Journal of Medical Microbiology & Diagnosis
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Research Article

Comparison of Direct Immunofluorescence (DIF) Method and Giemsa Staining with PCR Method for Detection of Chlamydia trachomatis in Patients with Follicular Conjunctivitis

Zohreh Abedinyfar1, Farahnoosh Doustdar3, Fahimeh Asadi Amoli2, Hossein Goudarzi1 and Fatemeh Fallah1*

1Department of Microbiology, Faculty of Medicine, Shahid Behesti University of Medical sciences, Tehran, Iran

2Department of Pathology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran

3Department of Microbiology, Faculty of Medicine, Pediatric Infection Research center, Shahid Behesti University of Medical sciences, Tehran, Iran

*Corresponding Author:
Fatemeh Fallah
Department of Microbiology, Faculty of Medicine
Pediatric Infection Research
Shahid Behesti University of Medical Sciences
Tehran, Iran
Tel: +982123872548
Fax: +982122439972
E-mail: [email protected]

Received date: August 31, 2016; Accepted date: December 21, 2016; Published date: December 29,2016

Citation: Abedinyfar Z, Doustdar F, Amoli FA, Goudarzi H, Fallah F (2016) Comparison of Direct Immunofluorescence (DIF) Method and Giemsa Staining with PCR Method for Detection of Chlamydia trachomatis in Patients with Follicular Conjunctivitis. J Med Microb Diagn 5:246.doi:10.4172/2161-0703.1000246

Copyright: © 2016 Abedinyfar Z, et al. This is an open-access article distributed under the terms of the creative commons attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Background: Chlamydia trachomatis is the most common cause of chronic follicular conjunctivitis. As a rapid diagnosis is important in the reducing the long-term squeal of the diseases, the objective of this study was to compare the three methods, direct immunofluorescence (DIF), staining and PCR, for detection of Chlamydia trachomatis in patients with follicular conjunctivitis.

Material and methods: Overall 90 patients with conjunctival were enrolled in this study smears were prepared for DIF and Giemsa staining. PCR amplification after Extraction performed using CT1 and CT5 primers designed from Omp1 gene.

Results: Of the 90 patients, 28 (31.1%) were positive by DIF and 13 (14.4%) by Giemsa staining; and 35 patients (38.8%) showed positive results in PCR. Sensitivity, specificity, predictive positive value, and negative predictive value of DIF in comparison to PCR respectively were calculated as 88.33, 100, 100 and 88.70. Sensitivity, specificity, predictive positive value and negative predictive value of DIF in comparison to PCR respectively were calculated as 61.40, 100, 100 and 71.42. Therefore, sensitivity and negative predictive value of DIF are significantly higher than Giemsa staining.

Conclusion: DIF is more sensitive and more reliable than Giemsa staining for detection of Chlamydia trachomatis in the conjunctiva samples of patients with follicular conjunctivitis.

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