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The relation between plasma homocysteine level and cardiovascular risk factors in cerebral ischemia
Chi-Wei Huang1, Tsung-Hua Chen, Hung-Sheng Lin
1Department of Neurology, Chang Gung Memorial Hospital-Koahsiung Medical Center and College of Medicine, Chang Gung University, Kaohsiung, Taiwan.
Insights
Hyperhomocysteinemia (HHcy) is common in patients with cerebral ischemia. Even with normal kidney function, serum creatinine levels predict HHcy, a treatable cardiovascular risk factor requiring regular monitoring.
Area of Science:
- Cardiovascular Science
- Nephrology
- Neurology
Background:
- Hyperhomocysteinemia (HHcy) is linked to increased risk of vascular thrombosis and cerebral ischemia.
- Identifying confounding factors for HHcy is crucial, particularly in individuals with normal serum creatinine.
- Understanding HHcy prevalence and its association with cardiovascular risk factors in specific patient populations is essential.
Purpose of the Study:
- To determine the frequency of HHcy in patients experiencing cerebral ischemia.
- To investigate the relationship between homocysteine levels and cardiovascular risk factors.
- To describe plasma homocysteine level distribution in cerebral ischemia patients with normal serum creatinine.
Main Methods:
- A retrospective study design was employed.
- Patients were categorized into two groups based on plasma homocysteine levels: Group I (>= 12 microM/L) and Group II (< 12 microM/L).
- Analysis included comparison of cardiovascular risk factors and biochemical parameters between the two groups.
Main Results:
- Out of 218 patients, 45 (Group I) had elevated homocysteine levels.
- No significant differences were observed in hypertension, diabetes, cardiac disease, age, liver enzymes, lipid profile, or blood counts between groups.
- Serum creatinine levels were significantly higher in Group I and correlated directly with plasma homocysteine, acting as an independent predictor.
Conclusions:
- HHcy is prevalent among cerebral ischemia patients in this cohort.
- Renal function, indicated by serum creatinine, is a key determinant of HHcy, even in individuals with initially normal creatinine levels.
- Regular monitoring of HHcy is recommended due to its treatable nature and detrimental impact on renal function and cardiovascular health.
Purpose:
Hyperhomocysteinemia (HHcy) is associated with a higher risk of cerebral ischemia and other vascular thrombosis. Homocysteine is greatly influenced by a broad spectrum of physiological and pathological conditions but the confounding factor for HHcy is unknown in our population, especially in normocreatininemic individuals. It is our aim in this study to elucidate the relation between homocysteine and cardiovascular risk factors, and also describe the distribution of plasma homocysteine level in cerebral ischemia patients with normal serum creatinine level.
Methods:
A retrospective study was conducted to understand the frequency of HHcy in cerebral ischemia patients, and the confounding cardiovascular risk factors in HHcy. Patients were classified into two groups by their plasma homocysteine levels; group I patients were those whose level was > or = 12 microM/L whereas group II < 12 microM/L.
Results:
A total of 218 patients were enrolled. Their plasma homocysteine level ranged from 3.57 to 46.37 microM/L (mean: 10.01 +/- 5.03 microM/L). Group I included 45 patients whereas group II 173 patients. The frequency of hypertension, diabetes mellitus and cardiac disease, as well as age, aminotransferases, total cholesterol, triglyceride, albumin, hematocrit, hemoglobin and leucocyte count did not differ between group I and II patients, except serum creatinine level was higher in group I patients (p < 0.01). Serum creatinine level correlated directly to and was an independent predictor for the plasma homocysteine level.
Conclusions:
HHcy is common in our cerebral ischemia patients. Since renal function is a determinant for HHcy even in normocreatininemic patients, as a cardiovascular risk factor which detriments the renal function, it should be regularly monitored as HHcy is amenable for treatment.
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