Inverse Relationship in Jamaica between Plasma High-Density Lipoprotein Cholesterol Concentration and Coronary-Disease Risk as Predicted by Multiple Risk-Factor Status

1976 ◽  
Vol 51 (5) ◽  
pp. 475-482 ◽  
Author(s):  
G. J. Miller ◽  
N. E. Miller ◽  
M. T. Ashcroft
Keyword(s):  
Blood Pressure ◽  
Risk Factor ◽  
Ldl Cholesterol ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Cholesterol Concentration ◽  
Multiple Risk Factor ◽  
Coronary Risk ◽  
Plasma High Density ◽  
Risk Factor Status

1. The relation between plasma high-density lipoprotein (HDL) cholesterol concentration and multiple coronary-risk factor status has been assessed in fifty-two middle-aged clinically healthy men from urban and rural Jamaica. 2. Rural hill-farmers had a superior exercise performance (assessed by the responses to submaximal test exercise), less body fat, and lower fasting levels for plasma total cholesterol, low-density lipoprotein (LDL) cholesterol, total triglyceride and blood glucose than urban businessmen. Mean plasma HDL cholesterol was considerably higher in farmers then businessmen. 3. Multilinear regression analysis showed HDL cholesterol concentration to be independently and inversely correlated with plasma triglyceride, LDL cholesterol and diastolic blood pressure and that these relationships applied across the urban and rural sub-groups. There was also some evidence that HDL cholesterol concentration increased with stature. When these factors were taken into account, age, ethnic group, adiposity, weight, exercise performance, smoking history and blood glucose made no further significant contribution to the prediction of HDL cholesterol concentration. 4. Thus plasma HDL cholesterol concentration was highest in those subjects with the lowest coronary-risk as predicted by their multiple risk-factor status, an observation which supported other evidence that coronary-risk is inversely related to plasma HDL concentration. 5. The results raise the possibility that coronary-risk can be more simply estimated from the plasma HDL cholesterol concentration than from a consideration of other major lipid risk factors and blood pressure.

Platelet Aggregation and Plasma Lipoproteins in Alcoholics During Alcohol Withdrawal

1986 ◽  
Vol 55 (02) ◽  
pp. 173-177 ◽  
Author(s):  
K Desai ◽  
J S Owen ◽  
D T Wilson ◽  
R A Hutton
Keyword(s):  
Platelet Aggregation ◽  
Alcohol Withdrawal ◽  
Ldl Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Plasma Lipoprotein ◽  
Cholesterol Concentration ◽  
Arachidonic Acid Content ◽  
Low Density

SummaryPlatelet aggregation, platelet lipid composition and plasma lipoprotein concentrations were measured each week in a group of seventeen alcoholics, without overt liver disease, for one month, following acute, total alcohol withdrawal. The platelets were initially hypoaggregable but, within 1-2 weeks of cessation of drinking, they became hyperaggregable and then gradually returned towards normal values. Hyperaggregability could not be explained by increases in either the cholesterol or the arachidonic acid content of the platelets. Plasma very-low-density lipoprotein cholesterol levels remained high throughout the study, but the initially raised levels of high-density lipoprotein (HDL) cholesterol fell by 26%. Low-density lipoprotein (LDL) cholesterol concentration rose by 10% after two weeks of withdrawal but then returned to about the starting level. The resulting changes in the plasma LDL-cholesterol: HDL-cholesterol ratio, which had increased by more than 50% after two weeks of abstinence, essentially paralleled the time course of enhanced platelet reactivity in all but four of the alcoholics. These findings suggest that alterations in plasma lipoprotein concentrations during acute alcohol withdrawal may be a contributory factor to the haemostatic disorders present in such patients.

Risk factors for cardiovascular diseases and development of prehypertension

2018 ◽  
pp. 37-43
Author(s):  
В.В. Шерстнев ◽  
М.А. Грудень ◽  
В.П. Карлина ◽  
В.М. Рыжов ◽  
А.В. Кузнецова ◽  
...  
Keyword(s):  
Risk Factors ◽  
Blood Pressure ◽  
Cardiovascular Disease ◽  
Ldl Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Serum Levels ◽  
Left Ventricular ◽  
Optimal Blood Pressure

Цель - исследование взаимосвязи факторов риска сердечно-сосудистых заболеваний и развития предгипертонии. Методика. Проведен сравнительный и корреляционный анализы показателей модифицируемых и немодифицируемых факторов риска сердечно-сосудистых заболеваний у обследованных лиц в возрасте 30-60 лет с «оптимальным» артериальным давлением, (n = 63, АД <120/80 мм рт.ст.) и лиц с предгипертонией (n = 52, АД = 120-139/80-89 мм рт.ст.). Результаты. Показано, что лица с предгипертонией по сравнению с группой лиц, имеющих «оптимальное» артериальное давление характеризуются статистически значимо повышенным содержанием холестерина и холестерина липопротеидов низкой плотности, интеллектуальным характером трудовой деятельности, а также значимыми сочетаниями факторов риска: повышенный уровень холестерина липопротеидов низкой плотности с интеллектуальным характером трудовой деятельности; повышенное содержание креатинина с уровнем триглициридов; наследственная отягощенность по заболеваниям почек и интеллектуальным характером трудовой деятельности; наследственная отягощенность по сахарному диабету и гипертрофия левого желудочка сердца. У лиц с предгипертонией документированы перестройки структуры взаимосвязи (количество, направленность и сила корреляций) между показателями факторов риска в сравнении с лицами, имеющими «оптимальное» артериальное давление. Заключение. Выявленные особенности взаимосвязей факторов риска сердечно-сосудистых заболеваний при предгипертонии рассматриваются как проявление начальной стадии дизрегуляционной патологии и нарушения регуляции физиологических систем поддержания оптимального уровня артериального давления. The aim of the study was to investigate the relationship between risk factors for cardiovascular disease and development of prehypertension. Methods. Comparative and correlation analyses of modifiable and non-modifiable risk factors for cardiovascular disease were performed in subjects aged 30-60 with «optimal» blood pressure (n = 63, BP <120/80 mm Hg) and prehypertension (n = 52, BP = 120-139 / 80-89 mm Hg). Results. The group with prehypertension compared with the «optimal» blood pressure group had significantly increased serum levels of low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol, sedentary/intellectual type of occupation, and significant combinations of risk factors. The risk factor combinations included an increased level of LDL cholesterol and a sedentary/intellectual occupation; increased serum levels of creatinine and triglycerides; hereditary burden of kidney disease and a sedentary/intellectual occupation; hereditary burden of diabetes mellitus and cardiac left ventricular hypotrophy. In subjects with prehypertension compared to subjects with «optimal» blood pressure, changes in correlations (correlation number, direction, and strength) between parameters of risk factors were documented. Conclusion. The features of interrelationships between risk factors for cardiovascular disease observed in prehypertension are considered a manifestation of early dysregulation pathology and disordered regulation of physiological systems, which maintain optimal blood pressure.

Cardiovascular risk factors and endothelial dysfunction

2004 ◽  
Vol 107 (6) ◽  
pp. 609-615 ◽  
Author(s):  
Anthony S. WIERZBICKI ◽  
Philip J. CHOWIENCZYK ◽  
John R. COCKCROFT ◽  
Sally E. BRETT ◽  
Gerald F. WATTS ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cardiovascular Risk ◽  
Endothelial Dysfunction ◽  
Ldl Cholesterol ◽  
Disease Risk ◽  
Absolute Risk ◽  
Density Lipoprotein ◽  
Cholesterol Concentration ◽  
Individual Risk ◽  
Multiple Risk Factor

Endothelial dysfunction is a feature of atherosclerosis and is associated with CHD (coronary heart disease) risk factors. This study aimed to determine the relationship between the degree of endothelial dysfunction and calculated cardiovascular risk. Endothelial function, as determined by the ACh/NP (acetycholine/sodium nitroprusside response) ratio on brachial plethysmography, was compared with cardiovascular risk as calculated from the Framingham, PROCAM (Prospective Cardiovascular Munster) and MRFIT (Multiple Risk Factor Intervention Trial) algorithms in 246 (187 male) patients, including 44 (22%) with established CHD. Endothelial dysfunction correlated with the total number of risk factors (r2=0.22; P=0.002) and was related to LDL (low-density lipoprotein)-cholesterol in men and triacylglycerols (triglycerides) in women. The ACh/NP ratio correlated with the occurrence of diabetes, CHD and the LDL-cholesterol concentration (r2=0.58; P<0.001). Endothelial dysfunction was associated with presence of CHD on receiver-operating characteristic plot analysis (area=0.706±0.04; P=0.001). There was no correlation between ACh/NP ratio and CHD risk calculated with the Framingham algorithm in men, although both ACh and NP response correlated separately with risk in women. The endothelial ACh/NP ratio correlated with absolute risk in the PROCAM algorithm (r2=0.41; P<0.005). Intermediate results were obtained with MRFIT. Individual risk factors make different contributions to endothelial dysfunction compared with their role in risk calculators. The stronger relationship of endothelial dysfunction with PROCAM risk reflects the contribution of male sex, LDL-cholesterol and triacylglycerols to risk calculated by this algorithm.

scholarly journals Non-HDL Cholesterol Versus LDL Cholesterol as a CVD Risk Factor in Diabetic Subjects

2014 ◽  
Vol 31 (4) ◽  
pp. 199-203
Author(s):  
M Saiedullah ◽  
S Begum ◽  
S Hayat ◽  
SM Kamahuddin ◽  
MR Rahman ◽  
...  
Keyword(s):  
Risk Factor ◽  
Ldl Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Lipid Lowering ◽  
Lipid Lowering Therapy ◽  
Upward Trend ◽  
Cvd Risk ◽  
Cross Sectional

Objective: Serum low density lipoprotein (LDL) cholesterol is considered as the primary target of lipid lowering therapy and non-high density lipoprotein (HDL) cholesterol is the recommended second target. Recent studies claimed that non-HDL cholesterol is a better predictor of cardiovascular diseases (CVD) than LDL cholesterol. In this study we aimed to compare non-HDL cholesterol and LDL cholesterol as a CVD risk factor in confirmed diabetic subjects. Materials and methods: In this cross-sectional observational study, 1042 confirmed diabetic subjects selected randomly were included. HbA1cResults: In the total subjects, 767 (74%) subjects had LDL cholesterol > 100 mg/dL and 822 (79%) subjects had non- HDL cholesterol > 130 mg/dL. HbA1c values were different (p<0.02) in five groups and showed upward trend (p<0.01). All the lipid parameters studied were significantly different in five groups (p<0.0001) and TC, TG and non-HDL cholesterol showed upward trend (p<0.0001), but HDL cholesterol and LDL cholesterol showed downward trend (p<0.0001). Odds ratio (OR) of likelihood of risk individuals regarding non-HDL cholesterol compared to LDL cholesterol were 0.50 (p<0.001), 1.32 (p>0.05), 2.96 (p<0.001), 6.49 (p<0.001) and 9.37 (p<0.001) for TG concentrations of up to 150 mg/dL, 151-200 mg/dL, 201-250 mg/dL, 251-300 mg/dL and 301-400 mg/dL respectively with relative risk of 0.60, 1.24, 2.43, 4.83, 5.10. Conclusion: LDL cholesterol is a better tool for the detection of high-risk individuals than non-HDL cholesterol at TG concentration up to 150 mg/dL, whereas non-HDL cholesterol is better than LDL cholesterol at TG concentration above 200 mg/dL as a CVD risk factor. DOI: http://dx.doi.org/10.3329/jbcps.v31i4.21004 J Bangladesh Coll Phys Surg 2013; 31: 199-203

Triglyceride Management in Cardiovascular Risk Reduction

2005 ◽  
Vol 00 (01) ◽  
pp. 31
Author(s):  
Michael Miller
Keyword(s):  
Metabolic Syndrome ◽  
Risk Factor ◽  
Cardiovascular Risk ◽  
Ldl Cholesterol ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Low Density ◽  
Very Low Density Lipoproteins ◽  
The Metabolic Syndrome ◽  
Ldl Particles

Elevated triglycerides are now considered an independent risk factor for coronary heart disease (CHD), even apart from elevated low-density lipoprotein (LDL) cholesterol. While the primary lipid target for CHD risk management remains LDL cholesterol, the treatment of elevated triglycerides is now also recommended. Elevated triglycerides are believed to increase cardiovascular risk because certain triglyceride-rich lipoproteins, called remnant lipoproteins (partially degraded chylomicrons and very-low density lipoproteins (VLDL)), are atherogenic. Hypertri-glyceridemia, together with low levels of high-density lipoprotein (HDL) cholesterol and an increased prevalence of small, dense LDL particles, comprise a triad of lipid risk factors known as atherogenic dyslipidemia.The significance of hypertriglyceridemia as a cardiovascular risk factor is further highlighted by its inclusion as a component of the metabolic syndrome, a cluster of metabolic abnormalities, related to insulin resistance. The other criteria for metabolic syndrome include low HDL cholesterol, central obesity, elevated blood pressure, and abnormal fasting glucose. The metabolic syndrome is recognized as a major risk factor not only for premature CHD but also for type 2 diabetes mellitus.

Determinants of Cardiovascular Risk in 7000 Youth With Type 1 Diabetes in the Australasian Diabetes Data Network

2020 ◽  
Vol 106 (1) ◽  
pp. 133-142
Author(s):  
Jenny J Couper ◽  
Timothy W Jones ◽  
Melissa Chee ◽  
Helen L Barrett ◽  
Philip Bergman ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Type 1 Diabetes ◽  
Cardiovascular Risk ◽  
Ldl Cholesterol ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Urinary Albumin ◽  
Indigenous Youth ◽  
Z Scores

Abstract Context Cardiovascular disease occurs prematurely in type 1 diabetes. The additional risk of overweight is not well characterized. Objective The primary aim was to measure the impact of body mass index (BMI) in youth with type 1 diabetes on cardiovascular risk factors. The secondary aim was to identify other determinants of cardiovascular risk. Design Observational longitudinal study of 7061 youth with type 1 diabetes followed for median 7.3 (interquartile range [IQR] 4-11) years over 41 (IQR 29-56) visits until March 2019. Setting 15 tertiary care diabetes centers in the Australasian Diabetes Data Network. Participants were aged 2 to 25 years at baseline, with at least 2 measurements of BMI and blood pressure. Main Outcome Measure Standardized systolic and diastolic blood pressure scores and non–high-density lipoprotein (HDL) cholesterol were co-primary outcomes. Urinary albumin/creatinine ratio was the secondary outcome. Results BMI z-score related independently to standardized blood pressure z- scores and non-HDL cholesterol. An increase in 1 BMI z-score related to an average increase in systolic/diastolic blood pressure of 3.8/1.4 mmHg and an increase in non-HDL cholesterol (coefficient + 0.16 mmol/L, 95% confidence interval [CI], 0.13-0.18; P &lt; 0.001) and in low-density lipoprotein (LDL) cholesterol. Females had higher blood pressure z-scores, higher non-HDL and LDL cholesterol, and higher urinary albumin/creatinine than males. Indigenous youth had markedly higher urinary albumin/creatinine (coefficient + 2.15 mg/mmol, 95% CI, 1.27-3.03; P &lt; 0.001) and higher non-HDL cholesterol than non-Indigenous youth. Continuous subcutaneous insulin infusion was associated independently with lower non-HDL cholesterol and lower urinary albumin/creatinine. Conclusions BMI had a modest independent effect on cardiovascular risk. Females and Indigenous Australians in particular had a more adverse risk profile.

Effect of Phenobarbitone on Plasma Apolipoprotein B and Plasma High-Density-Lipoprotein Cholesterol in Normal Subjects

1979 ◽  
Vol 56 (5) ◽  
pp. 501-504 ◽  
Author(s):  
P. N. Durrington
Keyword(s):  
Apolipoprotein B ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Normal Subjects ◽  
Cholesterol Concentration ◽  
Low Density ◽  
Plasma High Density ◽  
Normal Men ◽  
Plasma Apolipoprotein

1. Further observations from an earlier study in which phenobarbitone in a dose of 180 mg daily was administered to ten normal men and women for 3 weeks are reported. There was a significant increase in plasma high-denity-lipoprotein (HDL) cholesterol concentration and in the concentration of both total plasma and low-density-lipoprotein (LDL) apolipoprotein B. 2. There was no change in the ratios of the cholesterol: apolipoprotein B and triglyceride: apolipoprotein B in LDL. 3. There was no significant change in plasma very-low-density-lipoprotein (VLDL) apolipoprotein B concentration and the proportion of lipid and apolipoprotein B in VLDL remained unchanged. 4. There was no change in the ratio of HDL:LDL cholesterol concentrations.

Abstract 492: Atherogenic Dyslipidemia in Patients with Transient Ischemic Attack

2015 ◽  
Vol 35 (suppl_1) ◽  
Author(s):  
Hye-Yeon Choi
Keyword(s):  
Transient Ischemic Attack ◽  
Ldl Cholesterol ◽  
Recurrent Stroke ◽  
Density Lipoprotein ◽  
Hdl Cholesterol ◽  
Vascular Lesion ◽  
Vascular Lesions ◽  
Cholesterol Concentration ◽  
Atherogenic Dyslipidemia ◽  
Ischemic Attack

Background: The risk of recurrent stroke following transient ischemic attack (TIA) is reported up to 15% at 90 days after the attack. Urgent assessment and combined use of preventive treatments in appropriate patients can reduce this risk significantly. The atherogenic dyslipidemia in patients with TIA may be associated with intracranial artery stenosis and higher risk of early recurrent stroke. This study was aimed to investigate if dyslipidemia was related to atherosclerotic vascular lesions in the TIA patients. Methods: Patients with TIA who admitted to single hospital were included. TIA was defined as an acute loss of focal cerebral function, lasting fewer than 24 hours. If brain magnetic resonance imaging scans showed acute infarction, the patient was judged to have a TIA with a new lesion; if not, the event was classified as TIA without a new lesion. Radiologic findings were reviewed retrospectively. Association between presence of atherosclerotic vascular lesions and lipid profile were examined. Atherogenic dyslipidemia was defined as high density lipoprotein (HDL) cholesterol ≤ 40 mg/dL and triglycerides ≥ 150 mg/dL. Level of non-HDL cholesterol was calculated as total cholesterol concentration minus HDL cholesterol concentration. Presence of classic risk factors of atherosclerosis and vascular disease were also reviewed. Results: Among 117 TIA patients, 106 patients who had available results were included to the analysis. Mean age was 64 years (± 13), and 48 were men (42.1%). Atherosclerotic vascular lesion was shown in 56 patients (52.8%). Presence of atherosclerotic vascular lesions was associated with age, diabetes, low density lipoprotein (LDL) cholesterol concentrations, and level of CRP. Atherogenic dyslipidemia was not related to vascular lesions. Among 106 patients, only 18 patients (17.0%) were diagnosed as TIA with a new lesion. Presence of acute cerebral infarction was associated with presence of atherosclerosis. Diabetes and current smoking were associated with new ischemic lesion related TIA. Conclusions: In TIA patients, concentrations of LDL cholesterol were related atherosclerotic vascular lesion which is known to be associated with recurrent stroke after TIA. It might be helpful to screen high risk TIA patient.

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