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Biomedical subjects

D Cucinotta

Publications and source records attributed to D Cucinotta.

179 records · Page 10Linked to original sources

Premixed insulin at ratio 3/7 and regular + isophane insulins at mixing ratios from 2/8 to 4/6 achieve the same metabolic control.

The insulin regimen with two daily injections is still that more frequently used. Often regular and NPH insulins are mixed at different ratios according to the patient's need; however, the mixture preparation can involve several errors. Efficacy, safety and compliance were evaluated comparing a premixture 3/7 (Actraphane HM) with extemporary mixtures of regular + NPH at mixing ratios ranging from 2/8 to 4/6, in a cross-over study of 8 weeks involving 20 insulin dependent diabetics. Metabolic control, hypoglycaemic episodes, insulin dose and proportions were similar with both treatments while a higher compliance was achieved with the premixture. In conclusion, premixture 3/7 and extemporary mixture (from 2/8 to 4/6) obtain the same efficacy and safety but the former shows a higher acceptability.

Adult↗

[Advances in insulin treatment. Evaluation of isophane or lente insulin, mixed with rapid insulin and injected twice-a-day].

When mixed with lente insulin, regular insulin undergoes a slowing down in its absorption rate, which does not occur when it is mixed with isophane insulin. However, there is not sufficient evidence to state that this phenomenon affects the quality of the metabolic control in subjects treated with two daily mixtures of regular + intermediate insulins. This parallel study compared in a 12-month follow-up the results achieved in 154 insulin-dependent diabetics (IDD) treated with extemporary mixtures injected before breakfast and dinner, with the purpose of verifying whether the mixture regular + isophane offers specific advantages compared to regular + lente. The 79 IDD who have used isophane insulin and the 75 IDD treated with lente insulin had similar personal and clinical findings. During the 12-month study, the improvement of glucose profile, the number and the severity of hypoglycaemic episodes as well as the insulin requirement resulted almost overlapping with the two treatments. In conclusion, the results of this study confirm that the mixtures of regular + isophane insulins (Actrapid HM + Protaphane HM) and regular + lente insulins (Actrapid HM + Monotard HM) give the same guaranties of safety and efficacy, that the former shows a more rapid absorption rate and, finally, indicate that the ratio 30:70 between regular and intermediate insulins is that more frequently used.

Adolescent↗

Different daily blood glucose control and free insulin levels during treatment with mixtures of soluble and lente or soluble and NPH semisynthetic human insulins.

To compare daily blood glucose and free-insulin profiles after the administration of two different mixtures of semisynthetic human insulins (soluble + lente or soluble + NPH), 8 well-controlled insulin-dependent diabetic patients with identical basal blood glucose levels were studied. At the beginning of the first daily period of study, each subject was connected to an Artificial Pancreas to achieve a standard blood glucose (100 mg/dl); after at least 4 hours of normoglycemia, feed-back control was interrupted and the insulin mixture injected, at 8 p.m. and 8 a.m., at the dose previously optimised but always in the ratio 1:2 (1/3 rapid-acting + 2/3 intermediate-acting insulin). Blood glucose and free-insulin were then monitored for a 24-hour period, starting from 8 p.m. The same observation was repeated for each patient a few days later, only changing the intermediate-acting insulin. After dinner (8.30 p.m.) and after breakfast (8.30 a.m.) mean blood glucose was lower with soluble + NPH mixture, while early in the morning and in the late afternoon better glycaemic control was achieved with soluble + lente. F-IRI showed an almost specular behaviour: lower values soon after mixture injection and higher levels 8-12 hours later were observed with soluble + lente than with soluble + NPH. These data indicate that, at the ratio 1:2, the mixture of short-acting with lente HM insulin differs from the one with NPH not only for a lower activity of soluble insulin but also for a stronger and more prolonged effect of the intermediate preparation. This difference should be carefully taken into account in clinical practice.

Adult↗