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Oral contraceptive use and fasting triglyceride, plasma cholesterol and HDL cholesterol.

Fasting plasma triglyceride, plasma cholesterol and high-density lipoprotein (HDL) cholesterol levels were studied for 190 white women, ages 21--39 years, who were classified according to their oral contraceptive (OC) usage patterns at two community surveys, 3 years apart. The mean level of fasting triglyceride was higher among current OC users (95 mg/100 ml) than among nonusers (73 mg/100 ml) (p = 0.002). After adjustment for the possible confounding effects of age, weight, current cigarette smoking and fasting glucose level, current OC users still had a mean plasma triglyceride level 19 mg/100 ml higher than that of nonusers (p = 0.007). Current OC users also appeared to have somewhat higher levels of total cholesterol which were of borderline significance in crude and adjusted analyses. There was a nonsignificant inverse relationship of OC use with HDL cholesterol levels. Past use did not affect these results, indicating that the OC-induced lipid changes were reversible.

Adult

Influence of hydrochlorothiazide on the plasma levels of triglycerides, total cholesterol and HDL-cholesterol in patients with essential hypertension.

The influence of hydrochlorothiazide (HCT) treatment on the plasma levels of triglycerides, total cholesterol and high density lipoprotein cholesterol (HDL-cholesterol) was studied in 10 patients with essential hypertension. After a placebo period of 4 weeks, 50 mg HCT twice daily was given for a period of 9 months, followed by a second placebo period of 4 weeks. Triglycerides, total cholesterol and HDL-cholesterol were determined at the end of both placebo periods and after 1, 3, 6 and 9 months of HCT. For the whole group, there were no significant changes in triglycerides or HDL-cholesterol, whereas total cholesterol significantly increased during HCT. In 6 patients, plasma triglycerides were higher during HCT as compared to both placebo periods. In only 4 patients did HDL-cholesterol increase during HCT. Changes in triglycerides, total cholesterol and HDL-cholesterol were not related and no correlation was found with changes in blood pressure, body weight or serum potassium. In conclusion, this study confirms a possible adverse effect of diuretic treatment on plasma lipids, which should be considered when determining therapeutic regimens for hypertension.

Adult

High density lipoproteins (HDL) and physical activity: the influence of physical exercise, age and smoking on HDL-cholesterol and the HDL-/total cholesterol ratio.

220 trained men, examined the day before participation in a cross country ski-race, had significantly higher HDL-cholesterol and HDL-/total cholesterol ratio than untrained men, but did not differ signficantly from untrained women. HDL-cholesterol was significantly higher in skiers above 60 years than in skiers of younger age. Tobacco smokers ahd lower HDL-cholesterol and HDL-/total cholesterol ratio than non-smokers, but the differences were only significant in skiers, not in controls. HDL-cholesterol was positively correlated to total cholesterol in skiers. The HDL-cholesterol level may possibly contribute to the lower morbidity of CHD in men who are physically active during leisure time.

Adolescent

Uric Acid-to-HDL Cholesterol Ratio is Associated with Hepatic Steatosis but Not Fibrosis in Nonobese Adults: A NHANES 2017-2020 Study.

BACKGROUND: Although metabolic dysfunction-associated steatotic liver disease (MASLD) has traditionally been regarded as a disease closely related to obesity, its prevalence is gradually rising in nonobese populations. The uric acid-to-high-density lipoprotein cholesterol ratio (UHR) is a novel metabolic biomarker that has been shown to be associated with MASLD. However, its role in nonobese individuals remains unclear. This study aimed to investigate the association between UHR and nonobese MASLD. METHODS: Data from the 2017 to 2020 National Health and Nutrition Examination Survey (NHANES) were analyzed. UHR was calculated as the serum uric acid (UA) divided by the high-density lipoprotein cholesterol (HDL). Liver steatosis (using controlled attenuation parameters, CAP) and fibrosis (using liver stiffness measurement, LSM) were evaluated through vibration-controlled transient elastography (VCTE). Multivariate linear regression was employed to evaluate associations. Nonlinear relationships were examined using smoothed curve fitting. RESULTS: This analysis included 3573 participants (47.41% male; aged 20-80 years). Log2-UHR was positively associated with CAP (&#x3b2; = 9.96, 95% CI: 6.93-12.98, P < 0.001) and MASLD prevalence (OR = 1.64, 95% CI: 1.38-1.95, P < 0.001). Subgroup analyses revealed significant interactions by sex, age, ethnicity, and smoking status (all P for interaction < 0.05), with stronger associations in females, adults aged 40-59 years, individuals of other Hispanic ethnicity, and never-smokers. Moreover, the association between log2-UHR and CAP was linear and positive (P < 0.01). No significant association was found between log2-UHR and LSM (P > 0.05). CONCLUSIONS: UHR is independently associated with hepatic steatosis but not fibrosis in nonobese US adults, suggesting its potential utility as an early risk assessment to tool. Large scale prospective studies are needed in the future to further validate the conclusions of this study.

Humans

Plasma HDL cholesterol in epileptics with elevated triglyceride and cholesterol.

Due to the metabolic changes induced, e.g. in the liver by anti-epileptic drugs, the significance of high serum triglyceride and cholesterol in epileptics was studied and the plasma HDL cholesterol level was compared in 190 epileptic patients with elevated or normal triglyceride and cholesterol, with the corresponding values in 43 healthy subjects. One-third of the epileptic patients showed elevated plasma HDL cholesterol levels. Female epileptics had higher plasma HDL cholesterol than the normolipidemic healthy subjects. Epileptics with elevated triglyceride or a combination of elevated triglyceride and cholesterol had a lower plasma HDL cholesterol level than normolipidemic patients with epilepsy. HDL cholesterol level in epileptics with high serum cholesterol did not diverge from the level in epileptics with normal serum triglyceride and cholesterol. The results show significant differences of plasma HDL cholesterol between epileptic patients and normolipidemic healthy controls on one hand, and between epileptics with altered and epileptics with normal serum lipid levels on the other. The findings suggest that the increase of plasma HDL cholesterol level in epileptics undergoing anticonvulsant treatment is influenced by endogenous triglyceride metabolism.

Adolescent

[Low HDL cholesterol in close relatives and patients with myocardial infarct].

Male patients aged 40 to 59 who had had acute myocardial infarction three months previously displayed a lower HDL cholesterol than the HDL cholesterol of an apparently healthy control group. The male first degree relatives of patients with acute myocardial infarction, like the patients with coronary disease, had a low HDL cholesterol which differed significantly from the HDL cholesterol of the control group. Low HDL cholesterol appears to be a better "marker" of patients with coronary disease and relatives of patients with acute myocardial infarction than serum cholesterol and triglycerides. The importance of low HDL' cholesterol could be related to the role of HDL in the cholesterol transport system from the peripheral tissues.

Adult

The association of low levels of HDL cholesterol and arteriographically defined coronary artery disease.

Epidemiologic studies have found associations between low levels of high density lipoprotein (HDL) cholesterol and increased risk of coronary artery disease, using myocardial infarction or angina pectoris as endpoints. However, since most studies have not correlated HDL cholesterol with the presence, severity, or location of anatomically proven coronary disease, the present study measured HDL cholesterol levels in 483 men and women undergoing coronary arteriography. Consistent and statistically significant trends of decreasing mean HDL cholesterol levels with increasing numbers of diseased coronary arteries were observed in both men and women and in younger and older age groups. Although women without coronary disease had much higher levels of HDL cholesterol than men without coronary disease, the differences between men and women with similar degrees of coronary disease were small. Low levels of HDL cholesterol were associated with left main coronary disease; patients with both triple vessel disease and left main disease had lower levels of HDL cholesterol than did patients with triple vessel disease without left main disease. These results were not explained by the possible associations of low density lipoprotein cholesterol or triglycerides with HDL cholesterol. These findings suggest that low levels of HDL cholesterol are important risk factors for the development of atherosclerosis and that they may be useful for identifying patients at high risk of certain anatomic patterns of coronary artery disease.

Adult

Effect of nicomol on HDL cholesterol level.

In cardiovascular diseases with potential atherosclerosis, the serum concentration of HDL cholesterol as determined by a precipitation method with dextran sulfate and Mg++ was lower while that of total cholesterol was normal or elevated. Treatment with a daily dose of 1,200 mg of Nicomol, a derivative of nicotinic acid, for 1 to 3 months increased the mean HDL cholesterol level by 3 to 5 mg/dl and reduced the total cholesterol level by 14 to 15 mg/dl and total/HDL cholesterol ratio by 0.8 (3 months) to 0.9 (1 month, p less than 0.05). Similar decreases in HDL cholesterol concentration were also found in parenchymal and obstructive liver diseases with normal total cholesterol values except in fulminant hepatitis and intrahepatic cholestasis.

Adult

Cigarette smoking and HDL cholesterol: the Framingham offspring study.

High density lipoproteins were measured on fasting blood samples from 4107 men and women. Control for reported alcohol consumption and subscapular skinfold thickness using multiple regression analysis allowed an examination of the relationship between cigarette smoking and HDL cholesterol. Cigarette smoking was found to be associated with an average difference in HDL cholesterol of about 4 mg/dl in men and 6 mg/dl in women. Furthermore, when heavy alcohol drinkers were eliminated a significant negative association between number of cigarettes smoked and HDL cholesterol was demonstrable in both men and women. There was no evidence that former cigarette smokers, with the exception of those who switched to cigars or pipes or had quit less than one year, had lower HDL levels. Cigar or pipe smokers who had never smoked cigarettes had alcohol- and skinfold-adjusted HDL cholesterol comparable to the non-smoker. These observations indicate another possible link between inhaled tobacco smoke and the atherosclerotic process and suggest the need for further studies and experiments that might clarify the mutual relationship of HDL cholesterol, cigarette smoking and the atherosclerotic process.

Adult

HDL-cholesterol levels in the Multiple Risk Factor Intervention Trial (MRFIT) by the MRFIT Research Group 1,2.

Preliminary data from the Multiple Risk Factor Intervention Trial (MRFIT) have been examined for evidence that the program has an influence on plasma HDL-cholesterol. The overall mean level of this lipoprotein in the initial cohort of 1,084 men was not altered by two years of participation in this risk factor reduction project. However, changes did occur, both upwards and downwards, in some individuals. There were significant negative associations between change in HDL-cholesterol and changes in body mass, VLDL-cholesterol, LDL-cholesterol, and serum thiocyanate (a measure of cigarette smoking exposure); and there was a small positive association with change in reported alcohol intake. Multiple regression analysis revealed each of these associations to be independent of the others. The fat-controlled diet designed to lower total serum cholesterol did not decrease HDL-cholesterol levels. We conclude that conventional risk reduction programs are not likely to lower circulating HDL-cholesterol, and that program components such as weight reduction and smoking cessation may increase the levels.

Alcohol Drinking

HDL-cholesterol, apolipoproteins A1 and B. Age and index body weight.

Some data of previous literature have emphasized a negative correlation between plasma apo A1, HDL cholesterol and coronary heart disease. The present paper stresses a high negative correlation existing both in females and males between values of index body weight (IBW) and plasma levels of HDL cholesterol and apo A1. No correlation has been found between age and, respectively, HDL cholesterol, apo A1 and apo B.

Adolescent

[Vascular risk factors in chronic haemodialysis: the role of HDL cholesterol. Correlation with dietary intake and the quality of dialysis (author's transl)].

HDL cholesterol in 53 hemodialysed patients is significantly reduced (p less than 0,001) in front of 34 healthy people. The decrease is more pronounced in male but does not seem influenced by age or ethnical origin of subjects. There is no correlation between alpha cholesterol levels and hyperlipidemia which are in 50% of cases of type IV and more frequent in caucasian than in african: the beta cholesterol is correlated with total cholesterol and increased in type IV (p less than 0,001) but alpha cholesterol negatively correlated with triglyceridemia (p less than 0,001) is in comparable levels in dialysed with type IV or without hyperlipidemia. If for normal value triglyceridemia is correlated with caloric and carbohydrate intake (p less than 0,001), the diet does not seem to influence either the frequence of type IV nor the level of alpha cholesterol. However we found a positive correlation (p less than 0,05) between nervous conduction velocity and HDL cholesterol, this fact can let us hope a decrease in the cardiovascular complication associated with amelioration of the adequacy of dialysis.

Adolescent

HDL cholesterol and other lipids in coronary heart disease. The cooperative lipoprotein phenotyping study.

The relation between coronary heart disease (CHD) prevalence and fasting lipid levels was assessed by a case-control study in five populations with a total of 6859 men and women of black, Japanese and white ancestry drawn from subjects aged 40 years and older from populations in Albany, Framingham, Evans County, Honolulu and San Francisco. In each major study group mean levels of high density lipoprotein (HDL) cholesterol were lower in persons with CHD than in those without the disease. The average difference was small -- typically 3-4 mg/dl -- but statistically significant. It was found in most age-race-sex specific groups. The inverse HDL cholesterol-CHD association was not appreciably diminished when adjusted for levels of low density lipoprotein (LDL) cholesterol and triglyceride. LDL, totoal cholesterol and triglycerides were directly related to CHD prevalence; surprisingly, these findings were less uniformly present in the various study groups than the inverse HDL cholesterol-CHD association.

Adult

Plasma HDL cholesterol and the in vitro esterification of cholesterol.

In vitro esterification of plasma cholesterol was measured in twelve healthy subjects, six of whom had high plasma concentrations of high density lipoprotein (HDL) cholesterol, whereas the other six had low concentrations. Irrespective of the method used no difference between the groups with the respect to cholesterol esterification could be demonstrated. This may indicate that the beneficial effect of HDL on the development of atherosclerotic disease works thorugh other mechanisms than by facilitating the transport of cholesterol from peripheral tissues to the liver.

Adult

The combined effect of smoking and coffee drinking on LDL and HDL cholesterol.

Conflicting reports on the effect of smoking and coffee drinking on lipoproteins prompted us to study the combined effect of these two associated, widely prevalent habits in 361 persons randomly sampled from the Evans County cohort. Low-density lipoprotein (LDL) cholesterol levels were significantly higher among persons who smoked cigarettes and consumed five or more cups of coffee per day than among nonsmokers who abstained from coffee. Conversely, high-density lipoprotein (HDL) cholesterol was higher in persons who did not smoke or drink coffee than in coffee-consuming smokers. However, this trend was not statistically significant. Triglycerides and very low-density lipoprotein (VLDL) cholesterol were highest among smokers who drank five or more cups of coffee per day, but these differences did not reach statistical significance. Lipoprotein cholesterol levels were adjusted for age, sex and body mass. Smoking and coffee drinking interact in affecting LDL and total cholesterol, but coffee drinking alone did not appear to affect blood lipids.

Age Factors