AI Article Synopsis
- Multiple sclerosis (MS) is a chronic inflammatory disease primarily affecting the central nervous system, particularly in the Caucasian population, and is linked to nitric oxide (NO) levels.
- A study explored the connection between a specific genetic variant in the iNOS gene and susceptibility to MS among a group of patients and matched healthy controls.
- Statistical analyses indicated no significant difference in gene variant distributions between MS patients and controls, suggesting that this particular iNOS variant does not influence the risk of developing MS.
Article Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) affecting most commonly the Caucasian population. Nitric oxide (NO) is a biological signaling and effector molecule and is especially important during inflammation. Inducible nitric oxide synthase (iNOS) is one of the three enzymes responsible for generating NO. It has been reported that there is an excessive production of NO in MS concordant with an increased expression of iNOS in MS lesions. This study investigated the role of a bi-allelic tetranucleotide polymorphism located in the promoter region of the human iNOS (NOS2A) gene in MS susceptibility. A group of MS patients (n = 101) were genotyped and compared to an age- and sex-matched group of healthy controls (n = 101). The MS group was subdivided into three subtypes, namely relapsing-remitting MS (RR-MS), secondary-progressive MS (SP-MS) and primary-progressive MS (PP-MS). Results of a chi-squared analysis and a Fisher's exact test revealed that allele and genotype distributions between cases and controls were not significantly different for the total population (chi(2) = 3.4, P(genotype) = 0.15; chi(2) = 3.4, P(allele) = 0.082) and for each subtype of MS (P > 0.05). This suggests that there is no direct association of this iNOS gene variant with MS susceptibility.
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| http://dx.doi.org/10.1016/j.brainresbull.2004.04.019 | DOI Listing |
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