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Homocisteína, folato e vitamina B12 em pacientes colombianos portadores de coronariopatia / Homocysteine, folate and vitamin B12 in colombian patients with coronary disease
Garcia, Gilberto; Trejos, Juanita; Restrepo, Beatriz; Landázuri, Patricia.
  • Garcia, Gilberto; Universidad Del Quindio. Facultad de Ciencias de La Salud. CO
  • Trejos, Juanita; Universidad Del Quindio. Facultad de Ciencias de La Salud. CO
  • Restrepo, Beatriz; Universidad Del Quindio. Facultad de Ciencias de La Salud. CO
  • Landázuri, Patricia; Universidad Del Quindio. Facultad de Ciencias de La Salud. CO
Arq. bras. cardiol ; 89(2): 79-85, ago. 2007. ilus, graf, tab
Article in Portuguese | LILACS | ID: lil-460770
RESUMO

OBJETIVO:

Determinar a existência de associação entre os níveis plasmáticos de homocisteína, folato ou vitamina B12 e síndrome coronariana aguda em pacientes colombianos.

MÉTODOS:

Estudo caso-controle foram 50 pacientes portadores de síndrome coronariana aguda e 50 pacientes ambulatoriais sem síndrome coronariana. Foram medidos os níveis de homocisteína, folato e vitamina B12 por meio de imunoensaio por quimioluminescência. Foram também medidos os níveis de colesterol e frações, triglicérides, uréia, creatinina, hemoglobina e hematócrito.

RESULTADOS:

As concentrações plasmáticas médias de homocisteína foram significativamente diferentes entre os casos (12,4 æmol/l ± 6,0) e os controles (9,7 æmol/l ± 2,4), p=0,01. Os níveis de ácido fólico dos casos foram menores que os dos controles (respectivamente 10,5 ng/ml ± 3,5 x 12,6 ng/ml ± 3,6; p=0,01). Foi observada relação inversa entre os níveis de folato e os de homocisteína. Não houve relação entre os níveis de vitamina B12 e os de homocisteína. Houve diferença significativa nos níveis de triglicérides entre os grupos caso e controle (respectivamente 136,91 ± 67,27 x 174,3 ± 77,6; p=0,01). A razão das chances para hiper-homocisteinemia na síndrome coronariana aguda foi de 4,45 (intervalo de confiança de 95 por cento 1,5 - 13,3).

CONCLUSÃO:

O presente estudo demonstrou associação significativa entre os níveis de homocisteína e síndrome coronariana aguda em pacientes colombianos semelhante à encontrada em populações européias e norte-americanas. Houve correlação negativa entre os níveis plasmáticos de homocisteína e os de folato. Não houve associação entre os níveis plasmáticos de homocisteína e os de vitamina B12.
ABSTRACT

OBJECTIVE:

To determine the occurrence of association between homocysteine, folate, or vitamin B12 plasma levels and acute coronary syndrome in Colombian patients.

METHODS:

Case control study cases were 50 patients with acute coronary syndrome and controls were 50 outpatients without coronary syndrome. Homocysteine, folate and vitamin B12 levels were determined by means of chemiluminescence immunoassay. Cholesterol and lipoproteins, triglycerides, BUN, creatinine, hemoglobin and hematocrit were also measured.

RESULTS:

Mean homocysteine plasma concentrations were significantly different between cases (12.4 æmol/l ± 6.0) and controls (9.7 æmol/l ± 2.4), p=0.01. The folic acid levels of the cases were lower than those of the control patients (10.5 ng/ml ± 3.5 vs 12.6 ng/ml ± 3.6, respectively, p=0.01). An inverse relationship was found between folate and homocysteine levels. No relationship was observed between vitamin B12 levels and homocysteine levels. There was a significant difference in triglyceride levels between case and control groups (136.91 ± 67.27 vs 174.3 ± 77.6, respectively, p=0.01). The odds ratio for hyperhomocysteinemia in acute coronary syndrome was 4.45 (95 percent confidence interval 1.5 - 13.3).

CONCLUSION:

The present study found a significant association between homocysteine levels and acute coronary syndrome in Colombian patients, similarly to the European and North American populations. There was a negative correlation between homocysteine plasma levels and folate levels. No association between plasmatic levels of homocysteine and those of vitamin B12 was observed.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Acute Coronary Syndrome / Folic Acid / Homocysteine Type of study: Observational study / Risk factors Limits: Adult / Female / Humans / Male Country/Region as subject: South America / Colombia Language: Portuguese Journal: Arq. bras. cardiol Journal subject: Cardiology Year: 2007 Type: Article Affiliation country: Colombia Institution/Affiliation country: Universidad Del Quindio/CO

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Full text: Available Index: LILACS (Americas) Main subject: Acute Coronary Syndrome / Folic Acid / Homocysteine Type of study: Observational study / Risk factors Limits: Adult / Female / Humans / Male Country/Region as subject: South America / Colombia Language: Portuguese Journal: Arq. bras. cardiol Journal subject: Cardiology Year: 2007 Type: Article Affiliation country: Colombia Institution/Affiliation country: Universidad Del Quindio/CO