Contribution of Acute-Phase Proteins and Cardiovascular Risk Factors to Erythrocyte Aggregation in Normolipidemic and Hyperlipidemic Individuals

1998 ◽  
Vol 80 (12) ◽  
pp. 903-908 ◽  
Author(s):  
Xiaoduan Weng ◽  
Ghislaine Roederer ◽  
Raymond Beaulieu ◽  
Guy Cloutier
Keyword(s):  
Risk Factors ◽  
Cardiovascular Risk ◽  
Cardiovascular Risk Factors ◽  
Acute Phase ◽  
Adhesive Strength ◽  
Acute Phase Proteins ◽  
Erythrocyte Aggregation ◽  
Rbc Aggregation ◽  
Rouleau Formation ◽  
Kinetics Of

SummaryBackground. Numerous studies have demonstrated that elevated concentrations of acute-phase proteins affect red blood cell (RBC) aggregation. Plasma lipids and lipoproteins were also shown to be correlated with RBC aggregation in hypercholesterolemia. However, whether acute-phase proteins promote RBC hyperaggregation in hyper-lipidemic patients is unknown. The main objective of the study was to identify the impact of acute-phase proteins such as fibrinogen (Fib), haptoglobin (Hp), ceruloplasmin (Cp), α1-acid glycoprotein (AGP), α1-antitrypsin (AT), immunoglobulin G (IgG), and albumin (Alb) on RBC aggregation in 35 hyperlipidemic patients. The influence of these proteins in 32 normolipidemic subjects was also determined.Methods and Results. RBC aggregation parameters reflecting the kinetics of rouleau formation and the adhesive strength between RBCs were measured by laser reflectometry. Multivariate forward stepwise linear regression analyses were performed to study the relationship between RBC aggregation and these acute-phase proteins, total cholesterol (TC), triglycerides (TG), high (HDL-C) and low (LDL-C) density lipo-protein cholesterol, age, gender, body mass index (BMI), mean blood pressure (Mpressure), and smoking habit. The kinetics of rouleau formation was positively correlated with the linear combination of IgG and Hp (r = 0.76, p <0.0001) in hyperlipidemic patients, whereas IgG, smoking, AGP and gender were significant independent predictors in healthy subjects (r = 0.79, p <0.0001). The correlations obtained for the models predicting the adhesive strength between RBCs were 0.69 in patients (Alb, HDL-C, IgG, p <0.002) and 0.71 in healthy individuals (AGP, BMI, p <0.0001).Conclusion. This study suggests that acute-phase proteins such as IgG, Hp, AGP and Alb influence significantly and in an independent way the level of RBC aggregation. The close association between RBC aggregation and cardiovascular risk factors further strengthens its clinical importance.

Uric acid and uric acid/creatinine ratio and their correlations with the hemorheological determinants in subjects with subclinical carotid atherosclerosis

2022 ◽  
pp. 1-9
Author(s):  
Gregorio Caimi ◽  
Caterina Urso ◽  
Salvatore Brucculeri ◽  
Corrado Amato ◽  
Rosalia Lo Presti ◽  
...  
Keyword(s):  
Risk Factors ◽  
Insulin Resistance ◽  
Uric Acid ◽  
Cardiovascular Risk ◽  
Cardiovascular Risk Factors ◽  
Serum Uric Acid ◽  
Carotid Atherosclerosis ◽  
Erythrocyte Aggregation ◽  
Creatinine Ratio ◽  
Serum Uric Acid Concentration

BACKGROUND AND OBJECTIVE: we have examined the concentration of serum uric acid and the serum uric acid/creatinine ratio as well as their correlations with the main determinants of the hemorheological profile in a group of subjects with subclinical carotid atherosclerosis. METHODS: we evaluated the concentration of serum uric acid and the serum uric acid/creatine ratio in 43 men and 57 women [median age 66.00 (25)] with subclinical carotid atherosclerosis, subsequently divided according to the number of traditional cardiovascular risk factors and to the insulin resistance degree. RESULTS: serum uric acid, but not the serum uric acid/creatinine ratio, results strongly influenced by the number of cardiovascular risk factors and by the insulin resistance degree. In the whole group and in the subgroups of subclinical carotid atherosclerosis subjects, serum uric acid and serum uric acid/creatinine ratio show significant correlation, besides with whole blood viscosity, with plasma viscosity and erythrocyte aggregation. The influence of the serum uric acid on the erythrocyte aggregability that is a part of the erythrocyte aggregation is to ascribe to the action carried out by serum uric acid on the erythrocyte zeta potential. CONCLUSIONS: it is reasonable to think that the treatment of the asymptomatic or symptomatic hyperuricemia with the urate-lowering therapy that reduces the serum uric acid concentration may reflect on the hemorheological profile which role on the atherosclerotic cardiovascular disease is well known.

scholarly journals The effect of left ventricular remodeling on the longitudinal myocardial kinetics of both heart ventricles in patients with arterial hypertension and cardiovascular risk factors

2019 ◽  
Vol 26 (3) ◽  
pp. 27-34
Author(s):  
O. S. Barabash ◽  
Yu. A. Ivaniv ◽  
I. M. Tumak ◽  
Y. R. Barabash
Keyword(s):  
Risk Factors ◽  
Cardiovascular Risk ◽  
Cardiovascular Risk Factors ◽  
Systolic Function ◽  
Left Ventricular ◽  
Concentric Hypertrophy ◽  
Diastolic Velocity ◽  
Eccentric Hypertrophy ◽  
The Right ◽  
Kinetics Of

The aim – to study the longitudinal kinetics of the left, right ventricles and interventricular septum (IVS), depending on the type of left ventricular (LV) remodeling in patients with arterial hypertension (AH) in combination with additional cardiovascular risk factors with preserved LV contractility, as well as to determine the correlation of changes in the right ventricular systolic and diastolic parameters estimated with the tissue pulsed-wave Doppler imaging (TDI) with the same indices of the LV and IVS. Materials and methods. The study included 71 patients (average age – 54) with essential AH (68 % men) with a normal LV ejection fraction. The patients had the obese stage 1, combined hyperlipidemia, 29.6 % of patients had type II diabetes, 33.8 % were smokers. The patients were distributed into 4 groups depending on the types of remodeling: 1 – normal geometry (12.7 %); 2 – concentric remodeling (47.9 %); 3 – concentric hypertrophy (35.2 %); 4 – eccentric hypertrophy (4.2 %). TDI of the left and right ventricles and IVS was performed, systolic and diastolic TDI indices were determined, and the index of isovolumic myocardial acceleration (IVA) was calculated for the right ventricle (RV). Results and discussion. The type of LV concentric hypertrophy negatively affects the longitudinal myocardial kinetics of LV and IVS in the study group. The early diastolic velocity Em and the systolic velocity Sm were significantly decreased for the LV and IVS, the late diastolic velocity Am was decreased for the IVS and the E/Em for LV ratio was notably increased. Among the diastolic RV TDI indices only the deceleration time DTEm was significantly longer in LV concentric remodeling and concentric hypertrophy, than in its normal geometry. The IVA index was decreased in changing the type of LV geometry from normal to eccentric hypertrophy, indicating worsening of the RV longitudinal myocardial systolic function. There was a close correlation between diastolic and systolic TDI indices of the RV and IVS, which potentially indicated the importance of IVS in the mechanism of interventricular interaction and its effect on the RV function. The reliable dependence of systolic and diastolic RV TDI indices on the LV contractility was established. Conclusions. The type of LV remodeling, especially concentric hypertrophy, negatively affects the longitudinal myocardial kinetics of both ventricles in patients with AH in combination with additional cardiovascular risk factors. IVA can be a sensitive diagnostic criterion in the detection of early myocardial disorders of the RV systolic function with the changes of the LV geometry in this category of patients. Indices of RV longitudinal myocardial kinetics are closely dependent on changes in the function of IVS, which has a leading role in the formation of interventricular interaction.

scholarly journals Cardiovascular risk factors and acute-phase response in idiopathic ascending aortitis: a case control study

2009 ◽  
Vol 11 (1) ◽  
Author(s):  
Vaidehi R Chowdhary ◽  
Cynthia S Crowson ◽  
Kimberly P Liang ◽  
Clement J Michet ◽  
Dylan V Miller ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cardiovascular Risk ◽  
Cardiovascular Risk Factors ◽  
Acute Phase ◽  
Acute Phase Response ◽  
Case Control Study ◽  
Case Control ◽  
Phase Response ◽  
Control Study

An assessment of the hemorheological profile in patients with subclinical carotid atherosclerosis divided in relation to the number of cardiovascular risk factors and different degrees of insulin resistance

2021 ◽  
pp. 1-12
Author(s):  
G. Caimi ◽  
C. Urso ◽  
S. Brucculeri ◽  
C. Amato ◽  
M. Carlisi ◽  
...  
Keyword(s):  
Risk Factors ◽  
Insulin Resistance ◽  
Cardiovascular Risk ◽  
Cardiovascular Risk Factors ◽  
Carotid Atherosclerosis ◽  
Plasma Viscosity ◽  
Plasma Fibrinogen ◽  
Erythrocyte Aggregation ◽  
Shear Rates ◽  
Low Shear

We present a cohort of 100 subjects [43 men and 57 women; median age 66.00(25)] who were tested using carotid ultrasound to identify subclinical carotid atherosclerosis (SCA). We have evaluated the behaviour of whole blood viscosity (WBV) at high (450 s–1) and low (0.51 s–1) shear rates, plasma viscosity (450–1), hematocrit and mean erythrocyte aggregation. When compared to normal control subjects, using the Mann-Whitney test, we observed in SCA patients a significant increase in WBV only. The results were substantial after having divided the SCA subjects according to the cardiovascular risk factors (CRFs) and the degree of insulin resistance; the research was performed using two surrogate indexes such as TG/HDL-C and TyG. With the division carried out according to CRFs, employing the Kruskal-Wallis test, results show a significant increase in WBV (at high and low shear rates), in plasma viscosity, in erythrocyte aggregation and plasma fibrinogen level. Whereas by dividing them into the median of TG/HDL-C and TyG, we noticed a significant increase in WBV (at high and low shear rates) and in erythrocyte aggregation in the two groups with high TG/HDL-C ratio and with high TyG; having found an increased level of plasma fibrinogen in the latter. The data underlines the role of the main hemorheologic aspects in subclinical carotid atherosclerosis being closely correlated to the CRFs and different degrees of insulin resistance.

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