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Decreased high density lipoprotein-cholesterol levels in male patients with transient ischemic attacks
Insights
Transient ischemic attacks (TIAs) in men are linked to lower high-density lipoprotein (HDL) cholesterol. This finding may help predict future stroke risk in male TIA patients.
Area of Science:
- Neurology
- Cardiovascular Medicine
- Clinical Biochemistry
Background:
- Transient ischemic attacks (TIAs) are critical indicators for future ischemic cerebrovascular events.
- Approximately 45% of patients experiencing TIAs later suffer a complete stroke.
- Understanding biochemical markers associated with TIAs is crucial for prognostic evaluation.
Purpose of the Study:
- To investigate plasma lipid and lipoprotein levels in patients diagnosed with TIAs.
- To identify potential biochemical markers that correlate with TIA occurrence and prognosis.
- To compare lipid profiles of TIA patients with a control group without cerebrovascular lesions.
Main Methods:
- Analysis of plasma lipid and lipoprotein levels in 50 TIA patients (36 males, 14 females, mean age ~50).
- Comparison of lipid profiles between TIA patients and a control group of similar age and sex.
- Statistical analysis to determine significant differences in lipid parameters.
Main Results:
- No significant difference in total cholesterol levels between TIA patients and controls.
- Slight elevation in mean triglyceride levels and increased incidence of type IV hyperlipoproteinemia observed in TIA patients.
- Significantly reduced high-density lipoprotein (HDL)-cholesterol levels found exclusively in male TIA patients (-19.7% vs. controls).
Conclusions:
- Reduced HDL-cholesterol levels in male TIA patients represent a significant finding.
- This biochemical marker may hold prognostic value for evaluating the risk of future cerebrovascular events in men.
- Further research into lipid profiles could enhance the prediction of stroke risk following TIAs.
Abstract:
Plasma lipid and lipoproteins levels were determined in a continuous series of 50 patients (36 males and 14 females), mean age around 50 years, with a clinical diagnosis of transient ischemic attacks (TIAs). TIA was defined as a sudden episode of focal cerebrovascular insufficiency, with complete resolution of the symptoms within 24 h. TIAs are considered an important prognostic symptom for ischemic cerebrovascular diseases, being manifest in approximately 45% of the patients later undergoing a complete stroke. Plasma total cholesterol levels did not differ in these patients, when compared with a similar series of patients of the same age and sex, free of cerebrovascular lesions. A slight elevation of mean triglyceride levels was detected in the patients of both sexes, as well as higher incidence of type IV hyperlipoproteinemia. The most significant finding, however, observed only in male TIA patients, was that of significantly reduced high density lipoprotein (HDL)-cholesterol levels. This reduction (-19.7% compared to the control group) is similar to that recently reported for patients with clear-cut ischemic cerebrovascular disease. The detection of decreased HDL-cholesterol levels in male TIA patients may be of considerable significance for a prognostic evaluation of this biochemical parameter.