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Query: UMLS:C0020473 (hyperlipidemia)
 15,891 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

To prove antilipemic and antiatherogenic effectiveness several animal species were given "essential" phospholipids (EPL) during different experimental procedures. The following actions were studied: 1. Effect of EPL-substance after prophylactic and therapeutic oral administration (dosage: 50, 150, 450 mg/kg bodyweight daily) in rats with acute and subacute hypelipemia induced by triton. 2. Effect of EPL-substance after prophylactic and therapeutic oral administration (dosage: 50, 150, 450, 1800 mg/kg bodyweight daily) in rats with dietetic hypercholesterolemia. 3. Effect of EPL-substance after daily oral administration (dosage: 50, 150, 450 mg/kg bodyweight) on the development of coronary and aortic atherosclerosis and various biochemical parameters in cholesterol-fed cockerels. 4. Effect of EPL-substance after dialy oral administration (dosage: 50, 150, 450 mg/kg bodyweight) on subacute triton-hyperlipemia in mini pigs. Triton-administration causes a greater or smaller increase in all parameters of the lipid metabolism measured. EPL treatment decreases these parameters during therapeutic and prophylactic administration in some cases even reaching normal values. The effect was clearly dose-dependent. EPL inhibit the increase in total lipids in dietetic hypercholesterolemia during therapeutic as well as during prophylactic administration. The effect was clearly dose-dependent in all doses, being statistically significant at the highest dosage level. In cockerels EPL were effective at all dose levels in counteracting the development of coronary atherosclerosis while the effect in atherosclerosis of aorta was less distinct. Except for non-esterified fatty acids, EPL reduced all biochemical parameters measured.
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PMID:[The anti-hyperlipemic and anti-atherogenic effect of "essential" phospholipids: a pharmacologic trial]. 103 12

The value of measuring plasma lipids at birth as a guide to hyperlipidaemia in the future has been studied in 230 infants. There was a weak overall correlation between the cholesterol concentration at birth and during the second year of life (r = +0-215, P less than 0-05). There was no such relationship for triglyceride concentration. Not one of seven infants showing hypercholesterolaemia at birth had a raised level at follow-up. By contrast, all seven infants whose cholesterol levels exceeded two standard deviations at follow-up had normal values at birth. This discrepancy may reflect the influence of diet on plasma lipids. The mean plasma cholesterol and triglyceride concentrations during the second year were significantly lower in those infants being fed diets that contained increased amounts of unsaturated fat. The likelihood of hyperlipidaemia being found during the second year of life therefore depended more on the nature of the infant's food than on the presence of hyperlipidaemia at birth. The added influence of genetic components was suggested by the finding of a greater prevalence of early cardiovascular events in the families of infants showing hyperlipidaemia at one to two years of age.
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PMID:Comparison of plasma lipids at birth and in second year of life. 107 70

The serum lipoproteins of rabbits given semisynthetic cholesterol-free diets containing coconut oil or butter or a conventional rabbit chow supplemented with cholesterol, were studied by preparative ultracentrifugation and electrophoresis. (1) All three diets elevated the total cholesterol level but only the coconut oil diet markedly increased the triglyceride (TG) content in addition. All ultracentrifugation fractions showed elevated cholesterol/TG ratios, and this was especially evident for the cholesterol diet. In the hyperlipidemic rabbits cholesterol was therefore mainly transported in lipoproteins with a changed lipid composition. (2) The lipid levels of the "HDL" fraction were more or less unaffected by the lipid concentration in whole serum. In the total serum cholesterol ranges 150-500 (coconut oil diet) and 100-300 mg/100 ml (cholesterol diet), most cholesterol was transported as "LDL" cholesterol. This latter fraction reached maximum cholesterol concentrations of about 350 (coconut oil diet) and 400 mg/100 ml (cholesterol diet) at total cholesterol levels of approximately 600 and 1200 mg/100 ml serum, respectively. At still higher levels of total cholesterol, the whole increment was concentrated to the "VLDL" fraction. (3) With semisynthetic diets in the whole cholesterol range 250-400 mg/100 ml it was possible, with respect to cholesterol, to induce fairly similar concentrations and distributions to those seen in man, with about 60% transported as "LDL", 30% as "VLDL" and 10% as "HDL" cholesterol with the coconut oil diet and 65%, 20% and 15%, respectively, with the butter diet. Such experimental conditions seem to be suitable for testing the hypocholesterolemic action of drugs intended for human hyperlipidemia Type II. (4) Compared with earlier investigations on rabbits, the present distribution study suggests that the degree of aortic lipid infiltration in cholesterol-fed rabbits is better related to the levels of "LDL" than to "VLDL" cholesterol.
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PMID:Distribution of cholesterol and triglycerides among lipoprotein fractions in fat-fed rabbits at different levels of serum cholesterol. 107 96

Fasting serum triglyceride and cholesterol measurements, and lipoprotein characterization by ultracentrifugation, were performed in four groups of patients with chronic renal disease (uraemic, short- and long-term haemodialysis and renal transplant recipients) and the results compared with those obtained from age- and sex-matched control subjects. Basal insulin and growth hormone levels, and serum creatinine and albumin concentrations were measured in, and detailed dietary histories taken from patients in each group. The predominant lipid abnormalities were hypertriglyceridaemia and increased very low density lipoproteins (type IV hyperlipoproteinaemia) in both uraemic and haemodialysis patients. Following renal transplantation, a different pattern of hyperlipidaemia was found. Hypercholesterolaemia was more common and hypertriglyceridaemia less common than in the uraemic and haemodialysis group. The lipoprotein abnormalities were increased low density and/or very low density lipoproteins, with types IIa IIb and IV hyperlipoproteinaemia occurring equally frequently. In uraemic and haemodialysis patients, the proportion of carbohydrate in the diet was high, and may have played a role in the genesis of hypertriglyceridaemia. There was a positive correlation between relative body weight and serum triglyceride in the long-term dialysis group. In renal allograft recipients hypertriglyceridaemia could be attributed, at least in part, to obesity, prednisone dosage and the degree of impairment of graft function. The aetiology of hypercholesterolaemia in the transplant recipients was unclear. Neither basal insulin nor growth hormone levels were elevated in any patient group. Uraemic hypertriglyceridaemia is a clearly defined and well documented metabolic abnormality which is not corrected by dialysis. Post-transplantation hyperlipidaemia however, is a condition of variable presentation and multifactorial aetiology.
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PMID:Studies on the nature and causes of hyperlipidaemia in uraemia, maintenance dialysis and renal transplantation. 110 47

1. There were significant correlation between hyperlipidemia and obesity, hypertension, abnormal ECG and abnormal eyeground. 2. The incidence of cerebral hemorrhage was closely associated with hypertension but not with hyperlipidemia. 3. It was proved that hypertension with both hyper-Ch and hyper-TG was highly related to the development of cerebral infarction. 4. It seemed that the incidence of myocardial infarction and angina pectoris was related to hypertension with hyper-Ch. 5. Therefore, the present study suggested that the control of hypercholesterolemia and hypertriglyceridemia was useful for the prevention of cerebro-cardiovascular disease.
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PMID:The epidemiological study on the correlation between serum lipids and cerebro-cardiovascular disease. 111 82

An association between atherosclerosis, biliary obstruction and hyperlipidemia has been reported in the literature. In previous study from this laboratory, ultrastructural evidence of coronary artery endothelial damage was obtained in rats following ligation-induced biliary obstruction. In the present investigation, serum bile acids, total cholesterol and alkaline phosphatase levels were studied in association with similarly induced biliary obstruction and related to electron-microscopic observations of coronary artery endothelium. The results disclosed marked elevation of all serum parameters in as short a time as 24 hr following ligation compared with shamoperated controls. Animals exhibiting increases of serum bile acids and cholesterol also revealed severe configurational changes of endothelial cells which manifesed as buckling, detachment from the underlying internal elastic lamina, and vacuole formation. The role of elevated circulating bile acids and hypercholesterolemia as possible factors in producing arterial injury through membrane interaction is discussed. These observations suggest that biliary obstruction, even of short duration, may act as a potentially atherogenic mechanism in the experimental animal.
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PMID:Endothelial injury. Association with elevations of serum bile acid and cholesterol concentration in biliary-obstructed rats. 113 4

The fasting concentration of cholesterol and triglycerides in serum and in very low (VLDL), low (LDL) and high (HDL) density lipoproteins (LP) was determined 3 months after a myocardial infarction (MI) in 54 men, and the values obtained were compared to those in 61 healthy male control subjects. The mean triglyceride concentration in MI patients was significantly increased in serum, VLDL, LDL and HDL by 74%, 110%, 30% and 12% respectively, compared to controls. The mean cholesterol concentration was significantly raised by 16%, 120% and 14% in serum, VLDL and LDL but decreased by 22% in HDL. Hypertriglyceridaemia occurred in 58% of MI patients. Of these patients, two-fifths had hypertriglyceridaemia only and three-fifths had combined hyperlipidaemia. The hypertriglyceridaemia was caused by elevation of only VLDL triglycerides in 26%, only LDL triglycerides in 19%, VLDL and LDL triglycerides in 23% and by various other combinations of raised LP triglyceride levels in 25% of cases. Hypercholesterolaemia was found in 41% of MI subjects. Of these, one-sixth had elevation of cholesterol levels, while five-sixths had combined hyperlipidaemia. The LP abnormalities underlying hypercholesterolaemia were increased of only VLDL cholesterol levels in 36%, only LDL cholesterol in 14% and both VLDL and LDL cholesterol in 50% of cases. The low HDL cholesterol values in comparison to controls were related to higher VLDL triglyceride values in MI patients, since HDL cholesterol fell significantly with increasing VLDL triglyceride levels. When HDL cholesterol was related to similar VLDL triglyceride levels, there were no major differences between controls and MI.
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PMID:Quantitative and qualitative serum lipoprotein analysis. Part 2. Studies in male survivors of myocardial infarction. 114 36

A new strain of rat characterized by genetic obesity, endogenous hyperlipidemia, and hypertension was obtained in this laboratory. The abnormal phenotype is inherited as a homozygous recessive trait. The animals exhibit marked hypertriglyceridemia, moderate hypercholesterolemia, and an electrophoretic pattern resembling that of human Type IV hyperlipoproteinemia. The average life-span is less than 1 year, due largely to the development of premature renal and vascular disease. The kidney lesion has both glomerulonephritic and nephrosclerotic components and is accompanied by marked proteinuria. About 12% of animals develop urinary tract calculi. The vascular disease consists of fibrous and fatty-fibrous intimal plaques, and polyarteritis. The obese animal offers a useful model for investigating abnormal lipid metabolism and the etiology and pathogenesis of atherosclerosis.
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PMID:Pathologic findings and laboratory data in a new strain of obese hypertensive rats. 117 27

Blood glucose, free fatty acid and insulin responses to oral glucose and the fasting serum lipids were measured in 3 groups: 32 non-obese (mean age: 47.5 years) and 9 obese (mean age: 84.5 years), male patients with coronary heart disease and 12 non-obese male controls (mean age: 46.5 years). The oral glucose tolerance tests were repeated after 3 years in 16 of the non-obese patients with coronary heart disease. The results were as follows: 1) Glucose tolerance was impaired in 19 of 32 non-obese patients (59.4%). There was a significant correlation between impaired glucose tolerance and hyperlipidemia (hypercholesterolemia and/or hypertriglyceridemia). 2) In obese patients FFA levels at 30, 60, and 120 min after oral glucose administration were significantly elevated and FFA decrease was delayed with a drop to minimum levels at 180 min. 3) The insulin response after oral glucose administration in the group of non-obese patients with normal glucose tolerance was similar to that of non-obese controls. In the group of non-obese patients with impaired glucose tolerance, serum insulin levels went up to normal levels, but the peak was delayed. The serum insulin levels in obese patients were significantly higher than those of controls of 0, 60, 120, and 180 min. After 3 years the change in insulin response to oral glucose was not related to anginal symptoms or ECG findings, but was related to body weight change in patients with minor changes in glucose tolerance. 4) The metabolic pattern in the non-obese group with impaired glucose tolerance resembled that of "mild diabetes" in delayed response of insulin and FFA, and mild hyperlipidemia. These findings suggest that obesity may contribute to hyperinsulinemia in patients with coronary heart disease and that impaired glucose tolerance observed in patients with coronary heart disease is in part due to "latent diabetes".
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PMID:Glucose tolerance, serum insulin and lipid abnormalities in patients with coronary heart disease. 118 89

Groups of metabolically normal (controls) and alloxan-diabetic adult female rabbits were fed semi-synthetic diets containing 40 cal % palm-kernel oil (PKO) or sunflower-seed oil (SSO) for 54 weeks. In contrast to control rabbits fed PKO-diet, the alloxan-diabetic rabbits on this diet, developed no or only a negligible degree of atherosclerosis, although the serum levels of all lipid classes had increased in the diabetic rabbits above that of the controls during almost the whole experimental period. The diabetic rabbits and the controls fed SSO-diet were both free from any significant atherosclerotic involvement in spite of the fact that the SSO-diet appeared unable to suppress the very high levels of the various serum lipid classes induced by the diabetic state. On both diets, the diabetic rabbits showed a significantly higher cholesteryl linoleate/oleate ratio than the controls, which was caused by an increase in the cholesteryl linoleate level in the diabetics. No serious aorta atherosclerosis was found in rabbits with a cholesteryl linoleate/oleate ratio higher than 0.6, although no correlation was found between the atherosclerosis indices and these ratios at values lower than 0.6. Rabbits with cholesteryl linoleate/oleate ratios below 0.6 seemed to run a greater risk of developing atherosclerosis. It is suggested that insulin might be required for atherogenesis in addition to hyperlipemia and hypercholesterolemia.
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PMID:Effects of palm-kernel oil and sunflower-seed oil on serum lipids and atherogenesis in alloxan-diabetic rabbits. 120 Nov 41


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