Abstract
Several studies suggest that DHEAS is a protective factor against atherosclerosis and coronary artery disease in man, but the mechanism of its biological role is unclear. Recently, it has been suggested that DHEAS can retard atherosclerosis formation through an increase in nitric oxide (NO) production by increasing E2 synthesis. The aim of the study was to evaluate the platelet cGMP concentrations (i.e. a marker of NO production) and the serum levels of DHEAS and E2 in normal females. Blood samples were taken from 51 normal women (age 42.3±1.9 yr, range: 22–67 yr, BMI 23.0±0.6 kg/m2) to evaluate platelet cGMP concentrations and serum levels of DHEAS and E2. To determine the platelet cGMP content, platelet rich plasma (PRP) was incubated at 37 C (30 min) in the presence of IBMX. The amount of platelet cGMP was measured by a cGMP (3H) assay kit. In all subjects the mean of platelet cGMP was 536.2±45.3 fmol/106 platelets and the mean of serum DHEAS and E2 was 151.4±13.9 μg/dl and 34.7±6.1 pg/ml, respectively. In all subjects DHEAS positively correlates with cGMP (p<0.001, r=0.513) and with E2 (p<0.001, r=0.650); furthermore E2 positively correlates with cGMP (p<0.001, r=0.663). In conclusion our data support the hypothesis that DHEAS exerts its antiatherogenic effect by increasing the NO production directly and/or by increasing the E2 synthesis.
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Martina, V., Origlia, C., Bruno, G.A. et al. Serum DHEAS levels correlate with platelet cGMP in normal women. J Endocrinol Invest 24, 28–30 (2001). https://doi.org/10.1007/BF03343922
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DOI: https://doi.org/10.1007/BF03343922