Identification of Brucella melitensis from camel’s blood by vitek2 and real time polymerase chain reaction

Kavitha Manivannan
ID
Malathi Ramasamy
Email src
Uma Sundaresan
ID
Samar M. Moustafa
Sherloumay
Safna Mariyam
Department of Microbiology, Tharb Camel Hospital, Qatar
Biotechnology, CDOE, Bharathidasan University, Tamil Nadu, India
School of Bioengineering, SRM University, Tamil Nadu, India
Department of Zoonoses, Faculty of Veterinary Medicine, Behna University, Behna, Egypt
Department of Microbiology, Tharb Camel Hospital, Qatar
Department of Microbiology, Tharb Camel Hospital, Qatar
Received: 8 September 2023 / Revised: 29 November 2023 / Accepted: 3 December 2023 / Published: 30 March 2024

Abstract

Introduction and aim. Brucellosis is a zoonotic disease. Experimental clinical and laboratory diagnosis is still facing problems in identifying the organism. The present study will diagnose a Brucella infection in camel blood in Qatar using serological assays. Isolation and identification were performed on a camel blood sample. Brucella in bacterial isolates was determined by real-time polymerase chain reaction (RT-PCR) as a gold standard test.

Material and methods. A total of 220 samples, 200 random serum samples, and 20 EDTA blood samples were selected among the above-mentioned random samples, and 20 serum samples from camel handlers were collected from Al Shahaniya prov ince, Qatar. The Rose Bengal test (RBT), buffered antigen plate agglutination test (BAPAT), and enzyme linked immunosorbent assay (cELISA) for the monoclonal antibody in serum samples were performed using commercially available kits. For the molecular detection of Brucella, conventional PCR and real-time PCR (GPS kit) were used for the genus-specific insertion sequence IS711. Brucella melitensis (MICROBOSS Hightech GmbH kit) was used to identify subspecies.

Results. The results identified by vitek2 compact (30%) showed B. melitensis in 6 samples out of 20 isolates. Both conventional (66.67%) and RT-PCR (83.33%) analyses supported this, demonstrating the presence of Brucella. These tests also showed that Brucella species were present in Rose Bengal 182/200 (91%), BAPAT 182/200 (91%), and cELISA (90%) 180/200 in camel serum.

Conclusion. To conclude, the prevalence of brucellosis in dromedary camels is higher in this region, and as a matter of urgency, measures should be taken to control the disease.

 

Cite

Manivannan K, Ramasamy M, Sundaresan U, Moustafa SM, Sherloumay, Mariyam S. Identification of Brucella melitensis from cam el’s blood by vitek2 and real time polymerase chain reaction. Eur J Clin Exp Med. 2024;22(1):94–101. doi: 10.15584/ejcem.2024.1.17.

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