Twelve hypercholesterolaemic patients, with or without hypertriglyceridaemia, were treated sequentially with 600 mg nicotinic acid alone per day and 300 mg nicotinic acid plus 60,000 U retinol and 140 mg tocopherols per day, each treatment being given for 30 days in random order sequence. Plasma concentrations of lipid fractions were determined before the start of the study and at the end of each treatment period. Both treatments resulted in a significant decrease in total cholesterol and LDL-cholesterol; HDL-cholesterol showed a small but significant increase and plasma triglycerides presented a variable behaviour pattern of change. The difference between the hypolipidaemic effects of nicotinic acid alone and the lower dose given with Vitamins A and E was small but the combination seemed to be more effective. No side-effects were reported with either treatment.

Cholesterol, HDL↗

PubMed1983

Correlations between glycosylated haemoglobin and other metabolic parameters in insulin-dependent diabetics.

The metabolic parameters of 40 insulin-dependent patients (22 females and 18 males) have been studied to evaluate their intercorrelations. We obtained positive correlation between glycosylated haemoglobin and triglycerides (r = +0,460; p less than 0,01) and between HbA1 and mean diurnal plasma glucose (MDPG) (r = +0,652; p less than 0,001). There was a negative correlation between HbA1 and high density lipoproteins (HDL) cholesterol (r = -0,406; p less than 0,05). No significant correlation was found between HbA1 and either uric acid or total cholesterol. Correlations were also found between MDPG and triglycerides, MDPG and HDL-cholesterol, triglycides and HDL-cholesterol, uric acid and HDL-cholesterol. These correlations are discussed.

Adult↗

PubMed1982

[Limits of insulin therapy in type II diabetes].

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Adult↗

PubMed1980

[Hyperoxaluria].

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Humans↗

PubMedDate not supplied

Blood lactate behavior after glucose load in diabetes mellitus.

The aim of this study was to evaluate the relationships between blood lactate and plasma glucose, insulin (IRI) and C-peptide (IRCP) during the first hour of an oral glucose load (OGTT, 100 g). Twelve controls, sixteen non-insulin-dependent (NIDDM) and four insulin-dependent (IDDM) diabetic subjects were studied. A significant increase in blood lactate was observed at 15 min in normal subjects, whereas there was a delayed increase at 45 min in NIDDM subjects, in the presence of IRCP increments of 0.31 nmol/l. In order to have a minimum significant lactate increment, the threshold value of peripheral IRCP increment was about 0.30 nmol/l. In IDDM subjects, despite considerable hyperglycemia, blood lactate concentration remained unchanged throughout the test. In normal and NIDDM subjects there was a significant negative correlation between delta lactate and delta glucose (r = -0.89, p less than 0.001) and a significant positive correlation between delta lactate and delta IRCP (r = 0.78, p less than 0.001). In conclusion, hyperglycemia itself and the lack of increase in insulin secretion do not affect blood lactate increase during OGTT; blood concentration of this metabolite depends mainly on an early insulin secretion apt to enhance tissue glucose uptake and to inhibit gluconeogenesis.

Adolescent↗

PubMedDate not supplied

ACTH 1-17 effects on intermediary metabolites in healthy subjects.

Some acute and chronic metabolic effects of a new ACTH analogue (ACTH 1-17, Synchrodyn) were evaluated in healthy subjects and compared to those of the synthetic fragment ACTH 1-24. The peptides were injected at doses reportedly comparable with regard to their corticotropic effect, i.e. 100 micrograms ACTH 1-17 and 250 micrograms ACTH 1-24. A similar increase in blood glucose, NEFA and ketone bodies concentrations, without any significant modification of insulin, C-peptide and glucagon levels, was observed after injecting both peptides. The chronic treatment with ACTH 1-24 induced a significant increase in basal lactate, pyruvate and alanine blood concentrations. The levels of these metabolites resulted unaffected or slightly reduced after the corresponding treatment with ACTH 1-17. Our data are compatible with a certain degree of exhaustion of the adrenocortical reserve or, alternatively, a resetting of the circadian cortisol rhythm after prolonged treatment with the ACTH 1-17 analogue.

Adrenocorticotropic Hormone↗

PubMedDate not supplied

ACTH 1-17 effects in insulin dependent diabetes mellitus.

The aim of this study was to evaluate the metabolic effects of a new synthetic ACTH analogue (ACTH 1-17) in insulin-dependent diabetic subjects. ACTH 1-17 (100 micrograms, intramuscular injection) was administered at 07(00)-07(30) every second day for 20 days. Changes in insulin dosage were carried out to maintain the same metabolic control during the period of the study. Before and after treatment diurnal plasma glucose profiles were superimposable and insulin requirement increased only in 16 out of 19 patients (mean: 6.7 +/- 2 U/die; range: 2-22 U/die). No changes were observed in diurnal profiles of blood alanine, glycerol, total ketone bodies and plasma NEFA, C-peptide, glucagon. The physiological blood lactate and pyruvate peaks following the evening meal were initially absent and could be detected after treatment. From our data it is not clear whether the more physiological pattern of blood lactate and pyruvate is caused by the modest increase in insulin dosage or is a specific effect of the treatment.

Adolescent↗

PubMedDate not supplied

[Residual beta-cell function in type diabetes].

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Adult↗

PubMedDate not supplied

[Multiple symmetrical lipomatosis. Metabolic effects of excision of lipomatous tissue].

Multiple Symmetric Lipomatosis (MSL) is a syndrome characterized by the occurrence of symmetric lipomas over various regions of the body. No clear etiology has been recognized while a frequent association with systemic metabolic abnormalities has been described. The metabolic situation of a subject affected by MSL was assessed before and after surgical excision of lipomas. A condition of impaired glucose tolerance (IGT) was verified both before and after surgery by the performance of oral glucose tolerance test, glucagon test, and daily glucose profile. No significant differences were observed after the ablation of lipomatous masses with regard to glucose, IRI, IRCP and NEFA behaviour. We concluded that the resection of lipomas can not modify glucose tolerance in MSL and that lipomas can be considered as tissues metabolically independent from the rest of body fat.

Glucose Tolerance Test↗