Abstract:
BACKGROUND:Atherosclerosis is a complex, chronic disease that usually arises from the converging action of several pathogenic processes, including hypertension, hyperlipidemia, obesity, and the accumulation of oxidized LDL. Platelet-activating factor acetylhydrolase (PAF-AH) is a LDL- and HDL-bound enzyme that hydrolyzes and inactivates PAF and prevents LDL-cholesterol oxidation, thus delaying the onset of atherosclerotic disease. METHODS:We evaluated the relationship between variants of the PAF-AH gene polymorphisms Arg92His, Ile198Thr, and Ala379Val and the presence of carotid atherosclerosis in 190 hypercholesterolemic Sicilian individuals. Carotid artery intima-media wall thickness (IMT) was measured as an indicator of early atherosclerotic disease. The participants were classified according to having normal (< or =1 mm) or abnormal (> or =1 mm) IMT and were also investigated for physical characteristics and biochemical indices, including PAF-AH activity. RESULTS:PAF-AH activity and LDL concentrations were significantly correlated in hypercholesterolemic patients, but plasma PAF-AH activity and HDL were not significantly correlated in either IMT group. No significant differences were detected among the PAF-AH gene polymorphisms in both groups after correction for age, sex, body mass index, plasma glucose and lipid concentrations, PAF-AH activity, blood pressure, and smoking habits. The analysis of PAF-AH genotype distribution showed no significant differences in percentage of 92, 198, and 379 genotypes in both IMT groups. CONCLUSION:Our data provided no evidence that PAF-AH polymorphisms influence PAF-AH activity and atherosclerosis in hypercholesterolemic Sicilian patients.
journal_name
Clin Chemjournal_title
Clinical chemistryauthors
Campo S,Sardo MA,Bitto A,Bonaiuto A,Trimarchi G,Bonaiuto M,Castaldo M,Saitta C,Cristadoro S,Saitta Adoi
10.1373/clinchem.2004.036863subject
Has Abstractpub_date
2004-11-01 00:00:00pages
2077-82issue
11eissn
0009-9147issn
1530-8561pii
clinchem.2004.036863journal_volume
50pub_type
杂志文章abstract::With the ultramicroanalytical system described here we can measure glucose in 1 microL of plasma or serum. The sample is placed on a dry, multilayer film element (Eastman Kodak), where a colored spot about 3.5 mm in diameter develops. The reflectance of these spots is measured with a reflectance digital matrix photome...
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