[Evaluation of the indicators of arteriosclerosis risk factors: cholesterol:HDL cholesterol and LDL cholesterol: HDL cholesterol in acute and chronic diseases of the liver].
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Carbohydrate-deficient transferrin (CDT) and HDL cholesterol (HDL) are highly correlated in male alcohol dependent patients.
BACKGROUND: Serum levels of total HDL cholesterol (HDL) are reportedly influenced by recent alcohol intake. We examined the correlation between HDL cholesterol and widely used markers of excessive alcohol intake, such as carbohydrate-deficient transferrin (CDT), gamma-glutamyl-transferase (GGT), or mean corpuscular volume of erythrocytes (MCV), of which CDT is thought to be the most specific. METHODS: Several serological markers [i.e., CDT, GGT, aspartate aminotransferase (ASAT), alanine aminotransferase (ALAT), MCV, and HDL] were determined in 100 actively drinking male patients with alcohol dependence (DSM-IV) and in 27 non-alcohol-dependent controls, according to routine procedures. Spearman's rank correlation coefficients were calculated. RESULTS: We found a highly significant positive correlation between HDL and CDT (r(s) = 0.55; p < 0.0005) in patients, but not in controls (r(s) = 0.13;p = 0.51). HDL was also positively correlated with GGT, ALAT, ASAT, and MCV only in patients. CONCLUSIONS: HDL cholesterol, as a widely determined parameter, may represent a useful routine marker for recent excessive alcohol intake. High HDL cholesterol levels should alert clinicians to investigate a patient's recent pattern of alcohol consumption.
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Serum total cholesterol, HDL cholesterol and blood pressure levels in 15-year-old adolescents in eastern Finland.
Serum total cholesterol, HDL-cholesterol and blood pressure were studied among 15-year-old school children in Eastern Finland. The mean serum total cholesterol was 4.47 mmol/l in boys and 4.86 mmol/l in girls; mean HDL-cholesterol was 1.29 mmol/l and 1.46 mmol/l, respectively. The mean blood pressure was 135/65 mmHg in boys and 126/67 mmHg in girls. Obese children had higher blood pressure and lower HDL-cholesterol levels than others. Among boys sexual maturation decreased the HDL-cholesterol level. Children whose parents had histories of cardiovascular disease did not have higher cholesterol or higher blood pressure levels than other children. Children at high risk apparently cannot be screened on the basis of parents' history of cardiovascular diseases.
Adolescent↗
Risk of nosocomial infections and effects of total cholesterol, HDL cholesterol in surgical patients.
BACKGROUND AND AIMS: Changes of lipoprotein pattern in plasma occur in many acute infections. The aim of this study was to analyse the role of total cholesterol and HDL cholesterol in postsurgical patients with nosocomial infection. METHODS: Four hundred and eighteen patients admitted to our department and operated on for various diseases are included in this prospective study. Various conventional risk factors for nosocomial infections were recorded. Biochemical parameters with plasma total cholesterol and HDL-cholesterol (HDL-C) levels were measured. RESULTS: In our study, the most frequent infection was surgical site infection. There was an increased association between low HDL-C level and nosocomial infections such as surgical site and pulmonary infections. HDL levels may be used as predictive parameter for surgical nosocomial infections. CONCLUSIONS: HDL-C levels seem to be one of the risk factors for postoperative nosocomial infection. Although total cholesterol level was not significantly increased, it may be also associated with the infection risk. Screening of lipoprotein pattern in patients undergoing operation may be useful for ascertaining of risk for nosocomial infection.
Cholesterol↗
Serum total cholesterol, HDL cholesterol and blood pressure levels in 13-year-old children in Eastern Finland. The North Karelia Youth Project.
North Karelia Youth Project is a community and school-based intervention study of 13-year-old schoolchildren in Eastern Finland. This paper deals with serum total cholesterol, HDL cholesterol and blood pressure levels with some important background variables in the baseline survey in 1978. A total of 966 children were studied. A high mean serum serum cholesterol level (5.1 mmol/l) among both boys and girls was an outstanding finding. The cholesterol level was higher in the rural than urban areas. Different diet can explain this difference. Mean blood pressure was 117/67 mmHg among girls and 117/63 among boys. The high risk factor levels at this age support strongly the idea that the prevention of cardiovascular diseases should be started already in childhood.
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A cross-sectional study of endogenous tissue plasminogen activator, total cholesterol, HDL cholesterol, and apolipoproteins A-I, A-II, and B-100.
Elevated levels of endogenous tissue-type plasminogen activator (t-PA) appear to be a marker for preclinical atherosclerosis. At present, however, data describing potential relations between plasma t-PA level and established lipid risk factors for coronary atherosclerosis are sparse. To explore these potential relations, we measured plasma levels of t-PA antigen (t-PA:ag) in 633 apparently healthy men in the Physicians' Health Study as well as total cholesterol, high-density lipoprotein (HDL) cholesterol, HDL2 cholesterol, HDL3 cholesterol, and apolipoproteins A-I, A-II, and B-100. Overall, plasma t-PA:ag levels were inversely correlated with HDL cholesterol (r = -.1616, P < .0005), HDL2 cholesterol (r = -.1632, P < .0005), and HDL3 cholesterol (r = -.0927, P = .019). In stratified analyses, the inverse association between t-PA:ag and HDL cholesterol was present among frequent (P trend = .002) and infrequent (P trend = .004) consumers of alcohol as well as among the subgroups of frequent exercisers (P trend < .001), men in the lower half of body mass index (P trend = .001), and nonsmokers (P trend < .001). In contrast, there was no association between t-PA:ag and total cholesterol (r = .0219, P = .58), whereas relations of t-PA:ag with apolipoproteins A-I, A-II, and B-100 were minimal and of borderline significance. These data indicate that plasma levels of endogenous t-PA:ag are inversely related to HDL cholesterol as well as HDL2 and HDL3 cholesterol.(ABSTRACT TRUNCATED AT 250 WORDS)
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The Tromsø Heart Study: food habits, serum total cholesterol, HDL cholesterol, and triglycerides.
Associations between food habits and total serum cholesterol, high density lipoprotein (HDL) cholesterol, and serum triglycerides were examined in 7,410 men and 7,257 women in Tromsø, Norway, following a screening in 1979-1980. High body mass index was associated with high serum cholesterol, high triglycerides, and low HDL cholesterol. Positive associations were observed between high serum cholesterol and high coffee consumption, use of butter or hard margarine, not selecting low-fat milk, and low bread consumption. The HDL cholesterol level was virtually independent of the dietary items recorded. Use of low-fat milk and frequent use of fish dishes for dinner seemed to be related to low serum triglyceride levels.
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The effect of propranolol treatment on total cholesterol, HDL cholesterol, triglycerides. Postheparin lipolytic activity and lecithin:cholesterol acyltransferase in hypertensive individuals.
Administration of 120 mg propranolol per day to hypertensive patients is followed by decreased plasma concentrations of total cholesterol and HDL cholesterol and increased concentrations of triglycerides. Postheparin lipolytic activity was reduced when measured 5 min after heparin administration. The activity of lecithin:cholesterol acyltransferase is diminished. Reduced activity of this enzyme by propranolol could be demonstrated in vitro as well.
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[Comparative study of total cholesterol, HDL cholesterol, LDL + VLDL cholesterol. Two methods: precipitation by concanavalin A and ultra centrifugation (author's transl)].
The authors determined in 3 populations (37 controls, 59 asymptomatic hyperlipemias, and 20 cases of arterial hyperlipemia) the total cholesterol, the HDL cholesterol and the LDL + VLDL cholesterol and their ratio by two methods : precipitation by concanavalin A and ultracentrifugation (AirFuge). These various lipid parameters were compared between 3 populations in order to determine their more or less discriminant character; furthermore, was established the degree of correlation between the results obtained by precipitation with concanavalin A and by ultracentrifugation. The results show : firstly, that the LDL + VLDL was significantly higher and the ratio HDL/LDL + VLDL significantly lower in hyperlipemia and in arterial disease compared with controls ; the HDL was significantly lower in arterial disease than in controls. No lipid parameter permitted one to differentiate between asymptomatic hyperlipemia and arterial disease. Furthermore, the correlation determined by the chi square method was very strong between the results obtained by precipitation with concanavalin A and ultracentrifugation as the coefficient of simple linear regression is very little different from the value + 1. They emphasize the interest of the method of precipitation by concanavalin A which is simple, rapid and very reliable.
Adult↗
Maintenance of the LDL cholesterol:HDL cholesterol ratio in an elderly population given a dietary cholesterol challenge.
We previously evaluated the responses to dietary cholesterol in children and young adults. In this study, the effects of dietary cholesterol on plasma lipids and LDL atherogenicity were evaluated in 42 elderly subjects (29 postmenopausal women and 13 men > 60 y old). Our exclusion criteria were diabetes, heart disease, and the use of reductase inhibitors. The study followed a randomized crossover design in which subjects were assigned to consume the equivalent of 3 large eggs (EGG) daily or the same amount of a cholesterol-free, fat-free egg substitute (SUB) for a 1-mo period. After a 3-wk washout period, subjects were assigned to the alternate treatment. The concentration of plasma cholesterol after the EGG period varied among subjects. When all subjects were evaluated, there were significant increases in LDL cholesterol (LDL-C) (P < 0.05) and HDL-C (P < 0.001) for both men and women during the EGG period, resulting in no alterations in the LDL-C:HDL-C or the total cholesterol:HDL-C ratios. In addition, the LDL peak diameter was increased during the EGG period for all subjects. In contrast, the measured parameters of LDL oxidation, conjugated diene formation, and LDL lag time did not differ between the EGG and the SUB periods. We conclude from this study that dietary cholesterol provided by eggs does not increase the risk for heart disease in a healthy elderly population.
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Prevalence of low HDL-cholesterol in patients with cardiovascular risk factors: The ECHOS (Etude du Cholesterol HDL en Observationnel) French Survey.
A low concentration of high-density lipoprotein-cholesterol (HDL-C) is an independent risk factor for cardiovascular heart disease (CHD), but little is known about the distribution of HDL-C in France. This study evaluated the prevalence of low HDL-C among a large French population (5232 patients) with other cardiovascular risk factors. Depending on the guidelines used, the prevalence of low HDL-C varied from 8.7% (cutoff value of 35 mg/dl) to 26.9% (National Cholesterol Education Program metabolic syndrome cutoff values). The prevalence of low HDL-C gradually increased with the number of associated risk factors. We identified three independent risk predictors for low HDL-C: hypertriglyceridaemia (HTG), abdominal obesity and gender. Overall, the frequency of HDL-C assessment was very high (>85%) and it was highest in patients with hypercholesterolaemia or a history of CHD. Risk factors more frequently associated with low HDL-C (i.e. HTG, abdominal obesity and type 2 diabetes) were not associated with a more frequent assessment of HDL-C. Our findings indicate that in France, the prevalence of low HDL-C remains relatively high, particularly for patients with obesity and HTG.
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Serum total cholesterol: HDL cholesterol ratios in US white and black adults by selected demographic and socioeconomic variables (HANES II).
BACKGROUND: Framingham Study findings suggest that total cholesterol (TC):High density lipoprotein cholesterol (HDL-C) ratio is a useful summary of the joint contribution of TC and HDL-C to coronary heart disease (CHD) risk. Information on the distribution of TC:HDL-C in the US population is limited to selected populations and the relationship of the ratio distribution and its correlates has received little attention. METHOD: TC/HDL-C ratios were examined in a representative sample of the United States adult population ages 20 to 74 years, between February 1976 and February 1980 during NHANES II, using stratification and multivariate regression analyses. RESULTS: Age-adjusted mean ratios were higher in men compared with women and were higher in Whites compared with Blacks. White men had the highest TC/HDL-C mean ratios. These relationships remained after stratification by age, education, body mass index, alcohol use, cigarette smoking, and physical activity. Using multivariate analyses, the ratios were positively related to BMI, age, and smoking; and negatively related to female sex, alcohol use, being Black, and physical activity. CONCLUSIONS: Using a ratio reference point of greater than or equal to 4.5 from the Framingham study, at least an estimated 44 million persons ages 25 to 74 years in the US were found to be at higher risk of developing coronary heart disease.
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[Quantitative value of the total cholesterol: HDL cholesterol ratio of healthy persons of different age].
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Adolescent↗
An isoenergetic very low carbohydrate diet improves serum HDL cholesterol and triacylglycerol concentrations, the total cholesterol to HDL cholesterol ratio and postprandial pipemic responses compared with a low fat diet in normal weight, normolipidemic women.
Very low carbohydrate diets are popular, yet little is known about their effects on blood lipids and other cardiovascular disease risk factors. We reported previously that a very low carbohydrate diet favorably affected fasting and postprandial triacylglycerols, LDL subclasses and HDL cholesterol (HDL-C) in men but the effects in women are unclear. We compared the effects of a very low carbohydrate and a low fat diet on fasting lipids, postprandial lipemia and markers of inflammation in women. We conducted a balanced, randomized, two-period, crossover study in 10 healthy normolipidemic women who consumed both a low fat (<30% fat) and a very low carbohydrate (<10% carbohydrate) diet for 4 wk each. Two blood draws were performed on separate days at 0, 2 and 4 wk and an oral fat tolerance test was performed at baseline and after each diet period. Compared with the low fat diet, the very low carbohydrate diet increased (P <or= 0.05) fasting serum total cholesterol (16%), LDL cholesterol (LDL-C) (15%) and HDL-C (33%) and decreased serum triacylglycerols (-30%), the total cholesterol to HDL ratio (-13%) and the area under the 8-h postprandial triacylglycerol curve (-31%). There were no significant changes in LDL size or markers of inflammation (C-reactive protein, interleukin-6, tumor necrosis factor-alpha) after the very low carbohydrate diet. In normal weight, normolipidemic women, a short-term very low carbohydrate diet modestly increased LDL-C, yet there were favorable effects on cardiovascular disease risk status by virtue of a relatively larger increase in HDL-C and a decrease in fasting and postprandial triaclyglycerols.
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Plasma levels of VLDL- + LDL-cholesterol, HDL-cholesterol, triglycerides and apoproteins B and A-I in a healthy population--influence of several risk factors.
Plasma apo B and apo A-I were determined in 477 subjects (206 males and 271 females) by laser immuno-nephelometry. Measurements of VLDL- + LDL-cholesterol, HDL-cholesterol and triglycerides were done simultaneously. VLDL- + LDL-cholesterol and apo B values were similar in males and females and increased with age. HDL-cholesterol and apo A-I values were higher in females but stable with age. Different regression curves (HDL-cholesterol vs apo A-I) were obtained in males and females and a negative correlation was found between HDL-cholesterol or apo A-I and triglycerides. Increased body weight was associated with higher values of VLDL- + LDL-cholesterol, apo B and triglycerides in both sexes but lower values of HDL-cholesterol and apo A-I essentially in males. Finally, the study provides evidence of a relationship between smoking and alcohol consumption on the one hand, and HDL-cholesterol and apo A-I on the other.
Adult↗
Familial aortic aneurysms: serum concentrations of triglyceride, cholesterol, HDL-cholesterol and (VLDL + LDL)-cholesterol.
Patients with abdominal aortic aneurysms (AAAs) have been compared with healthy controls with respect to the serum concentrations of triglyceride, cholesterol, HDL-cholesterol and (VLDL + LDL)-cholesterol. The concentrations of triglyceride and (VLDL + LDL)-cholesterol in serum were higher in the patients than in the controls, while the concentration of HDL-cholesterol in serum was lower in the patients than in the controls. There was no statistically significant difference in the serum concentration of total cholesterol between the patients and the controls. Twelve patients had first degree relatives (brothers, sisters and/or parents) with AAAs and six patients had second degree relatives (cousins or brothers and sisters of the parents) with AAAs. There was no statistically significant difference between the patients who had first degree relatives with AAAs and the patients without AAAs in the family in the serum concentrations of triglyceride, cholesterol, HDL-cholesterol and (VLDL + LDL)-cholesterol.
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Pre- and post-treatment values of HDL cholesterol and total: HDL cholesterol ratio in hyperlipoproteinaemic subjects.
High-density lipoprotein (HDL) cholesterol, total cholesterol, and triglyceride concentrations were measured in fasting blood samples from 74 controls and 185 patients with untreated primary hyperlipoproteinaemia. The mean HDL cholesterol levels and the total cholesterol:HDL cholesterol ratios were significantly different between male and female subjects. Only patients with Fredrickson type IV hyperlipoproteinaemia had HDL cholesterol concentrations significantly lower than controls, but all subjects with hyperlipoproteinaemia had total:HDL cholesterol ratios significantly higher than control values. Subsequent investigations were performed on 31 patients during treatment of the hyperlipoproteinaemia by diet alone or in combination with clofibrate. Responses were variable, but generally improvements in the concentrations of triglyceride and total cholesterol were accompanied by an unchanged or decreased total:HDL cholesterol ratio, although there was not necessarily an increase in the HDL cholesterol itself.
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Blood cholesterol and HDL cholesterol in cigarette smokers.
24 cigarette smokers were investigated for their blood cholesterol and HDL cholesterol. They had elevated total cholesterol compared to age and sex matched controls. 21 smokers out of 24 had significant decrease of HDL cholesterol. It is suggested that smoking, which is a major risk factor for coronary heart disease, might act through its effect on total cholesterol and HDL cholesterol.
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