Paraoxonase in women with hypertension of different reproductive age. Relationship with cardio-metabolic risk factors

Keywords: paraoxonase, homocysteine, cholesterol, hypertension, menopause.


Annotation. Paraoxonase is a high-density lipoprotein-associated pleiotropic enzyme able to detoxify proatherogenic compounds such as oxi-low-density-lipoproteins and homocysteine-thiolactone. Low paraoxonase activity is likely to be involved in the development of cardiovascular diseases. The aim of the study – to investigate the relationship between paraoxonase activity, structural and functional markers of the heart and blood vessels, cardio-metabolic risk factors in women with hypertension of different reproductive age. The study included 193 women aged 32-70 years (55.4±0.68 years) with essential stage II hypertension. The control group consisted of 46 healthy women. The arylesterase activity of paraoxonase (EC in blood serum was determined by spectrophotometric method. Statistical processing of the obtained results was performed in the application package SPSS22 (© SPSS Inc.). The mean and standard error of the mean (M ± m) were calculated. Student's t-test was used. Pearson correlation analysis was performed at p <0.05. It was found that in women with hypertension there was a significant decrease (16%) in serum paraoxonase activity, compared with healthy women. Low paraoxonase activity was registered in 33.3% of premenopausal patients and 56.7% of postmenopausal patients (p˂0.05) and was associated with serum estradiol levels (r=0.33, 0.41, p<0.05). Low paraoxonase activity was associated with aberrant levels of lipids, homocysteine, obesity, metabolic syndrome, increased left ventricular mass index and carotid intima-media thickness, decreased brachial artery endothelium-dependent vasodilation. Thus, the decrease in serum paraoxonase activity in women with hypertension is related with the reproductive age of patients and the development of unfavorable metabolic, structural and functional changes in the heart and blood vessels.


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How to Cite
Pentiuk, L. O., & Pentiuk, N. O. (2021). Paraoxonase in women with hypertension of different reproductive age. Relationship with cardio-metabolic risk factors. Reports of Vinnytsia National Medical University, 25(2), 252-257.