Objective: This study aimed to determine the association of MAT1A variants with homocysteine, DNA damage, and cardiovascular disease (CVD).
Design: Eight variants of MAT1A were examined for associations with hypertension, stroke, CVD, homocysteine, and DNA damage in 1006 participants of the Boston Puerto Rican Health Study. Two variants were replicated
in 1147 participants of the Nutrition, Aging, and Memory in Elders Study.
Results: Two variants and haplotypes were strongly associated with hypertension and stroke, independent of methylenetetrahydrofolate reductase (MTHFR) variants. Homozygotes Selleckchem SN-38 of the MAT1A d18777A (rs3851059) allele had a significantly greater likelihood of stroke (odds ratio: 4.30; 95% CI: 1.34, 12.19; P = 0.006), whereas 3U1510A (rs7087728) homozygotes had a lower likelihood of hypertension (odds ratio: 0.67; 95% CI: 0.48, 0.95; AZD1390 clinical trial P = 0.022) and stroke (odds ratio: 0.35; 95% CI: 0.15, 0.82; P = 0.015). A similar trend of association was observed in a second elderly population. Furthermore, strong interactions between MAT1A genotypes and vitamin B-6 status were found. Carriers of the nonrisk allele 3U1510A had a lower 8-hydroxydeoxyguanosine concentration a biomarker of oxidative DNA damage-when plasma vitamin B-6 was
high, whereas homozygotes for the risk-allele 3U1510G had higher 8-hydroxydeoxyguanosine concentrations,
regardless of vitamin B-6 status.
Conclusions: MAT1A variants were strongly associated with hypertension and stroke. Improving folate and vitamin B-6 status might decrease the CVD risk of only a subset of the population, depending on genotype. These findings suggest that impairments in methylation activity, RNA Synthesis inhibitor independent of homocysteine, have an effect on CVD risk. Am J Clin Nutr 2010;91:1377-86.”
“Study Design. Correlation between variables measured with previously validated instruments.
Objective. To explore the association between catastrophizing and disability in patients treated for subacute or chronic low back pain (LBP) within routine clinical practice in Spain.
Summary of Background Data. The influence of psychological variables on LBP-related disability in Southern Europe is different to the one in the Anglo-Saxon and Northern European cultural environments. In Spanish LBP patients, the influence of fear avoidance beliefs on disability is negligible, and catastrophizing does not mediate the improvement of disability caused by active education. The association between catastrophizing and disability is unknown.
Methods. Thirty-three clinicians working for the Spanish National Health Service in 6 primary care and 8 specialty centers, recruited 1461 patients seeking care for subacute and chronic LBP. Patients were assessed only once.