E056 Particularities of the lipid profile in rheumatoid arthritis

Abstract

Abstract Background/Aims Rheumatoid arthritis (RA), like all autoimmune diseases, is associated with a high cardiovascular risk. This risk is essentially linked to the chronic inflammation and dyslipidaemia engendered by this chronic inflammatory rheumatism. The objective of this work was to study the particularities of the lipid profile in RA. Methods We conducted a retrospective study including patients with RA according to ACR- EULAR 2010 criteria, followed in an internal medicine department between 2015 and 2022. Lipid profile data (total cholesterol (TC), high-density lipoproteins (HDLc), low-density lipoproteins (LDLc), and triglycerides (TG)) were collected. Results Eighty patients with RA were studied. The mean age was 60.79 years [range 30-91]. The sex ratio (F/H) was 4.33, with a clear female predominance. The mean age of disease onset was 46.34 years [extremes: 22-82]. A personal history of dyslipidaemia was noted in 19 patients: hypercholesterolemia, hypertriglyceridemia, and mixed dyslipidaemia were found in 8, 4 and 7 cases. Other comorbidities were arterial hypertension in 35% of cases (n = 28), diabetes in 30% of cases (n = 24), renal insufficiency in 6.25% of cases (n = 5) and a cardiovascular accident in 5% of cases (n = 4). Obesity was present in 15% of patients and smoking in 5%. 69 patients had a lipid panel. Dyslipidaemia was present in 66.7% of cases (n = 46). The mean TC level was 4.47 ± 1.0 mmol/L [range: 2.32 - 6.96 mmol/L], the mean TG level was 2.64 ± 0.81 [range: 0.90 - 4 mmol/L], the mean HDLc level was 1.106 ± 0.394 mmol/L [0.50 - 2] and the mean LDLc level was 1.38 ± 0.565 mmol/L [0.56 - 3.59 mmol/L]. Hypercholesterolemia (21.3%) and hypocholesterolaemia (21.3%) were the most common lipid abnormalities. Hypertriglyceridemia was observed in 10% of cases (n = 8). A low HDLc was observed in 20% of cases (n = 16). Only one patient had a high HDLc, with HDLc= 2 mmol/l. A low LDL was present in 10% of cases (n = 8). Conclusion In our study, hypolipidemia was the most common dyslipidaemia. This confirms the lipid paradox found in RA. Indeed, systemic inflammation is responsible for quantitative and qualitative alterations in lipoproteins. Stabilization of the disease leads to normalization of the lipid balance and improved control of cardiovascular risk. Disclosure I. Fenniche: None. M. Somai: None. I. Rachdi: None. I. Arbaoui: None. F. Daoud: None. S. Kochbati: None. B. Daoud: None. Z. Aydi: None. F. Boussema: None.