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Biomedical subjects

S Sensi

Publications and source records attributed to S Sensi.

At least 91 records · Page 5Linked to original sources
PubMed1981

[Circadian rhythm of retinal critical fusion frequency (CFF)].

The measure of the fusion critical Frequency investigates the cerebral and retinal blood circulation. It has been carried out by means of Modugno-Rispoli apparatus in 11 subjects with a circadian procedure. A circadian rhythm was detected in right eye, left eye and both eyes with acrophases respectively at 11,57, 11.19 and 11.31 hrs. It is concluded that the existence of the oscillations of the cerebral vascular efficiency could have a practical implications in both diagnosis and therapy of related disease.

Adult↗
PubMed1981

[Effects of a "single-meal" low calorie diet on the circadian variation of serum cortisol, insulin and somatotropin and urinary excretion of catecholamines].

Four obese patients were given a single-meal diet for two periods of three days each. Blood samples were drawn every four hours for serum determinations of growthormone, cortisol and insulin. At same times urinary samples for urinary cathecholamines determination were collected. Cortisolemia showed a firm circadian rhythm in both regimens: there was a marked over-lap of the two confidences ellipsis so we could conclude for the independence of cortisol rhythm whith both regimes, but there occurred a significant difference in the acrofases between the two regimens. This could mean that meal-timing can play a major role in syncronizing catecholamines urinary excretion as far as subjects in supine position are concerned. No circadian rhythm was detected either in serum insulin or in HGH values.

Catecholamines↗
PubMed1981

[Modifications of the water balance and urinary excretion of sodium and potassium in obese subjects on a "single-meal" low-calorie diet].

Four obese patients were given a single-meal diet (684 kcal.) for two periods of three days each. Water-loss, according to Peter-Passmore formula, and urinary sodium and potassium excretion were measured at 4-hours intervals. A water-loss greater in the first than in the second and in the third day in both periods and a strong linear correlation between water-loss and sodium urinary excretion were found. Furthermore a circadian rhythm either is sodium or in potassium urinary excretion not modifiable by meal timing with both regiment was detected.

Adult↗
PubMed1981

[Variations in carbohydrate, lipid and protein oxidation evaluated by indirect calorimetry in obese subjects on a "single-meal" low-calorie diet].

Four obese patients were given a single-meal diet (Kcal, 684) for two periods of three days each. CO2 production and 02 consumption were measured every four hours for 30'. At the same times urine samples were collected for nitrogen evaluations. By Consolatio's formulas the amount of carbohydrates, lipids and proteins oxidated in the three days of both periods was calculated. No changes in carbohydrate and lipid oxidation rates were found during the three days with meal at h.10, while a progressive increase in lipid oxidation and a progressive decrease in carbohydrates oxidation could be observed with meal at h. 18. No change with both regimes could be observed in protein oxidation. Furthermore a circadian rhythm of lipid and carbohydrate oxidation with both regimens was observed, while protein oxidation showed a circadian rhythm only with meal at h.10.

Adult↗
PubMed1976

Circadian rhythm of insulin-induced hypoglycemia in man.

Four healthy men were given an insulin tolerance test (0.1 IU/kg BW) six times in different days at the following clock hours: 0400 h, 0800h, 1200 h, 1600 h, 2000 h, and 2400 h, in random order. Four days separated two consecutive tests. The glucose disappearance rate (K value) was calculated for each test between 5 min and 25 min after iv injection of insulin. The statistical evaluation by Cosinor test showed a statistically significant circadian rhythm for the hypoglycemic action of exogenous insulin with a peak at 1030 h (95% condifence limits: 0830 to 1430 h).

Adult↗