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ORIGINAL ARTICLE
Year : 2012  |  Volume : 53  |  Issue : 4  |  Page : 192-195

Intra-operative grading of coronary artery atherosclerosis associated with homocysteine levels in postmenopausal women undergoing elective off-pump CABG surgery


Department of Cardiovascular Surgery, Yazd Cardiovascular Researches Center, Afshar Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran

Correspondence Address:
Seyed Jalil Mirhosseini
Afshar Cardivascular Hospital, Jomhouri Blvd, Yazd
Iran
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DOI: 10.4103/0300-1652.107551

PMID: 23661876

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Background: Atherosclerosis is one of the common causes of morbidity and mortality, in postmenopausal women. Homocysteine, a sulfur-containing amino acid product of methionine metabolism, may play an important role in the development of cardiovascular diseases. This study was designed to evaluate the relationship between intra-operative grading of coronary artery atherosclerosis and homocysteine level in postmenopausal women who were candidates for off-pump coronary bypass graft surgery (CABG). Materials and Methods: In this cross-sectional study, 136 postmenopausal women (with the mean age of 54.9±4 years) were enrolled as candidates for elective off-pump CABG. For each patient the extent and severity of atherosclerosis was assessed by intra-operative grading (IOG) and Gensini score system. Total homocysteine was determined with ELISA method after 12 hours of fasting. The patients were classified into two groups (diffuse vs. discrete) based on intra-operative findings. Finally the relation between age, IOG, and Gensini score with homocysteine level was assessed by ANOVA, T-test, and Tukey HSD test. Results: There was a positive correlation between intra-operative grading and homocysteine level in both groups (P=0.005). The association between Gensini score and homocysteine was significant in higher levels of hyperhomocysteinemia (P<0.05). The homocysteine level also increased with age; therefore, patients were classified into two categories (<54 years and ≥54 years) by Levene test. Statistical analysis indicated no relationship between IOG, Gensini score, and homocysteine level in the patients who were younger than 54 years (P=0.3, P=0.2), but significant relation was detected between IOG, Gensini score, and homocysteine in the patients who were older than 54 years with diffuse or discrete lesions in coronary arteries (P=0.001, P=0.001). Conclusion: According to our findings, homocysteine level increases in post-menopausal women that can be an important risk factor for atherosclerosis and cardiovascular diseases.


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