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  • Title: Factors associated with hyperhomocysteinaemia in Mexican patients with rheumatoid arthritis.
    Author: Lopez-Olivo MA, Gonzalez-Lopez L, Garcia-Gonzalez A, Villa-Manzano AI, Cota-Sanchez AR, Salazar-Paramo M, Varon-Villalpando E, Cardona-Muñoz EG, Gamez-Nava JI.
    Journal: Scand J Rheumatol; 2006; 35(2):112-6. PubMed ID: 16641044.
    Abstract:
    BACKGROUND: Hyperhomocysteinaemia is a factor related to the development of atherosclerosis in rheumatoid arthritis (RA). However, Hispanics with RA develop high rates of coronary disease; there are no studies about the frequency and factors related to high levels of homocysteine in Mexican patients. OBJECTIVE: To evaluate the prevalence and characteristics associated with hyperhomocysteinaemia in Mexican patients with RA. METHODS: One hundred and fifty-two patients with RA were compared with 153 controls. The assessment in RA included clinical characteristics, disease activity (RADAR), functioning (HAQ-Di and global functional status), comorbidity, and radiological damage. Laboratory determinations included total serum homocysteine (tHcy), erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), rheumatoid factor (RF), and lipid profile. RESULTS: Median levels of homocysteine were higher in RA compared with controls (11.3 vs. 9.3, p<0.001). Twenty per cent of the patients with RA had hyperhomocysteinaemia (>15 micromol/L) compared with 6% in controls (p<0.001). There was statistical association between hyperhomocysteinaemia in RA with male gender (p<0.001), impairment in the global functional status (p = 0.004), higher radiological damage (p = 0.001), and CRP (p = 0.04). There was no association with RADAR, HAQ-Di, or RF, methotrexate dose or duration of use. In the adjusted multivariate model, the two variables associated with higher risk for hyperhomocysteinaemia were male gender (OR = 4.2, 95% CI 2 to 12, p = 0.006) and higher radiological damage (III-IV) (OR = 3.4, 95% CI 1.3 to 9, p = 0.01). CONCLUSIONS: Our data show a high prevalence of hyperhomocysteinaemia in Mexican patients with RA. More effort is required to evaluate and treat earlier this coronary risk factor.
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