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Development of modern methods for metabolome assessment, such as gas chromatography–mass spectrometry, allows one to expand the knowledge about the features of lipid metabolism in various clinical conditions. The study was aimed to investigate lipidome features in patients with different probability of family hypercholesterolemia (FH). The study involved 35 patients: 15 men (42.9%) and 20 women (57.1%) with dislipidemia or early cardiovascular diseases which manifested below 55 in men and 60 in women (average age of patients was 49.8 ± 9.96). The family dislipidemia probability was evaluated using the Dutch Lipid Clinic Network Score. In 10 patients the probability of FH was low (score 1–2), 22 patients had possible FH (score 3–5). Three patients had probable or definite FH (score 6 in 2 patients, score 9 in one patient). Determination of molecular species of sphingomyelins, ceramides and sphingoid bases (sphingosine, sphinganine) as well as galactosylceramide was carried out using gas chromatography–mass spectrometry. In patients with definite/probable FH the sphingosine level was significantly higher compared with patients having low probability of FH (144.36 ± 107.863 and 50.14 ± 62.409 ng/ml; р = 0.01). In patients with FH, an increase in the proportion of long chain sphingomyelin SM 18 : 1/22 : 0 as well as a significant increase in the level of long chain ceramides with С 20 : 1 and С 22 : 1 was determined. Positive correlation of low-density lipoproteins and sphingosine level (r = 0.344; p = 0.047) together with negative correlation of high-density lipoproteins (HDL), sphinganine (r = –0.52; p = 0.002), and galactosylceramide level (r = –0.56; p = 0.001) were detected. Thus, in patients with high probability of FH the lipidome changes were observed, which could be considered the cardiovascular risk markers.

Lipidome features in patients with different probability of family hypercholesterolemia