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The Ratio of Monocytes to HDL-Cholesterol Is Associated with Cardiovascular Risk and Insulin Resistance in Patients
Alejandro Romo-Cordero1, Marta González-Sierra2, Juan Carlos Quevedo-Abeledo3
1Division of Internal Medicine, Hospital Universitario de Canarias, 38320 Tenerife, Spain.
Insights
The monocytes to HDL-cholesterol ratio (MHR) does not differ between rheumatoid arthritis patients and controls. However, MHR is linked to increased cardiovascular risk and insulin resistance in RA patients.
Area of Science:
- Cardiology
- Rheumatology
- Biomarkers
Background:
- The monocytes to HDL-cholesterol ratio (MHR) is an inflammation marker associated with cardiovascular mortality.
- Rheumatoid arthritis (RA) confers an augmented risk of cardiovascular disease.
- The role of MHR in RA cardiovascular risk remains uninvestigated.
Purpose of the Study:
- To investigate the relationship between MHR and cardiovascular risk in RA patients.
- To explore the association of MHR with RA disease characteristics and traditional cardiovascular risk factors.
Main Methods:
- A cross-sectional study included 430 RA patients and 208 controls.
- Evaluated complete blood cell count and lipid profiles.
- Multivariable analysis assessed MHR in relation to RA features, subclinical atherosclerosis, insulin resistance, and beta cell function.
Main Results:
- MHR did not significantly differ between RA patients and controls after multivariable adjustment.
- MHR showed a poor relationship with most RA disease characteristics, except for ESR.
- MHR positively correlated with cardiovascular risk (SCORE2) and insulin resistance in RA patients.
Conclusions:
- MHR is not a distinguishing biomarker between RA patients and healthy controls.
- MHR demonstrates a significant association with heightened cardiovascular risk and insulin resistance in RA.
- Further research is warranted to understand MHR's role in RA pathophysiology and cardiovascular complications.
Abstract:
The monocytes to high-density lipoprotein (HDL)-cholesterol ratio (MHR) indicates inflammation based on the anti-inflammatory properties of HDL-cholesterol as well as the pro-inflammatory effect of monocytes. Several studies have investigated MHR in various disorders, specifically in cardiovascular diseases. Consequently, MHR has been significantly associated with cardiovascular and all-cause mortality in the general population, regardless of established risk factors. However, its role in the augmented risk of cardiovascular disease found in rheumatoid arthritis (RA) has not been studied to date. This is a cross-sectional study that encompassed 430 patients with RA and 208 controls matched by sex and age. Complete blood cell count and complete lipid profile were evaluated. Multivariable analysis was made to analyze the relationship between MHR and RA disease and features subclinical carotid atherosclerosis, and traditional CV factors including insulin resistance and beta cell function indices. MHR values did not differ between controls and patients after multivariable adjustment (12 ± 6 vs. 11 ± 6, p = 0.18). No relationship between this ratio and the characteristics of the disease was found excluding ESR, which showed a significant and positive association with MHR after adjustment for covariates. MHR significantly correlated with Systematic Coronary Risk Evaluation-2 (SCORE2) cardiovascular risk algorithm, and insulin resistance and beta cell function parameters after adjustment. In conclusion, MHR does not differ between patients with RA and controls. The relationship of this biomarker with disease-related data is poor. However, MHR is highly and positively related to cardiovascular risk and insulin resistance in RA.
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