JBM  Vol.7 No.6 , June 2019
Identification of Microbes in Patients with Lumbar Disc Herniation
Abstract: Apart from the conventional factors, recent evidences have suggested that lumbar disc herniation (LDH) is also associated with microbes, which is completely ignored in the management of patients with disc prolapse and disc degeneration. Therefore, the present study was carried out to identify the different microorganisms in subjects with LDH. Subjects (n = 101) who were confirmed for LDH with Magnetic Resonance Imaging and undergoing lumbar discectomy, were recruited in this study. Standard protocols for disinfection of the skin and surgical instruments were adhered. Skin scrapings, muscle biopsies and portion of the inter-vertebral disc were transferred into individually labeled Robertson’s cooked meat enrichment broth for anaerobic identification. Remaining portions of the excised disc material and muscle biopsy were taken for aerobic identification. Anaerobic isolates were identified using Gram stain and catalase test while the species identification was done by RapID ANA II ID kit. Gram stain, catalase test, DNase test and coagulase tests were used for identification of aerobic bacteria. Study confirmed 6/101 disc cultures (6%) with positive anaerobes and 12 disc cultures with coagulase negative Staphylococci spp. Among the anaerobes, two disc cultures were identified as Propionibacterium acnes and one as Gemella morbillorum. Due to slow growth, other three anaerobic cultures were not confirmed. However, they resembled the colony morphology of Gram positive bacilli. None of the control samples (skin and muscles) had any positive growth. The present study adds to the literature confirming the role of microorganisms in LDH. Present study newly identified Gemella morbillorum in the intervertebral tissue in addition to the previously reported microorganisms associated with LDH.
Cite this paper: Withanage, N. , Pathirage, S. , Perera, S. , Peiris, H. and Athiththan, L. (2019) Identification of Microbes in Patients with Lumbar Disc Herniation. Journal of Biosciences and Medicines, 7, 138-148. doi: 10.4236/jbm.2019.76009.

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