• J Paz Aparicio, I Fernández Bances, E López-Anglada Fernández, A H Montes, A Paz Aparicio, J Pena Vázquez, S Ramos García, S Antón García, P López Fernández, E Valle-Garay, and V Asensi.
• Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario Central de Asturias, Celestino Villamil s/n, 33006, Oviedo, Spain. jose_paz6@hotmail.com
• Eur Spine J. 2011 Aug 1;20 Suppl 3:383-9.

PurposeTo determine whether polymorphisms (SNPs) in the genes encoding cytokines and nitric oxide synthase (NOS) might play some role in lumbar disc herniation (LDH).Patients And MethodsCase-control study in which 179 patients were retrospectively reviewed. The case group was made of 50 patients with symptomatic LDH diagnosed by MRI while the control group was made of 129 individuals undergoing routine hip or knee arthroplasty with a lifetime lack of low back pain. SNPs in the cytokine genes of IL-1 [IL-1α (-889 C/T), IL-1β (+3953 T/C)], TNF-α (-308 G/A and -238 G/A) and NOS genes [eNOS (r 27 bp, intron 4 and -786 T/C) and iNOS (22 G/A)].ResultsThe CC genotype and C allele of the IL-1β (+3953 T/C) SNP were significantly more frequent among LDH patients compared to controls. On the other hand, eNOS (-768 T/C) and iNOS (22 G/A) SNPs were significantly more common in the control group.ConclusionsCarriers of the CC genotype of the IL-1β (+3953 T/C) SNP were more frequent among LDH patients suggesting some potential role of the IL-1β SNP on LDH pathogenesis. The eNOS (-786 T/C) and iNOS (22 G/A) SNPs were more frequent among the control subjects, suggesting their possible protective role against LDH. Genotyping these SNPs could be useful to identify persons with an increased lifetime risk of disc herniation in whom measures to avoid LDH could be implemented.

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