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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Long-term intermittent intravenous insulin therapy and type 1 diabetes mellitus.

An important defect in insulin-dependent diabetes mellitus (IDDM) is that the liver does not meet its full fuel-processing function, because many of the enzymes involved depend on high insulin concentrations in the portal vein. We tried to reactivate the liver by long-term treatment of IDDM patients with intravenous insulin in pulses, with the aim of achieving high portal-vein concentrations during and after a glucose meal. We studied 20 IDDM patients with brittle disease; despite use of a four-injection regimen with manipulation of insulin doses, diet, and physical activity, and frequent clinic visits for at least a year, these patients still had wide swings in blood glucose and frequent hypoglycaemic reactions. The intermittent therapy consisted of 7-10 pulses of intravenous insulin, infused while the patient was ingesting carbohydrate, primarily glucose, during the first hour of a 3 h treatment; three treatments were given in a day. After 2 consecutive days' treatment, patients were treated for 1 day per week. No patient was withdrawn from the study. At the time of this analysis the duration of intermittent treatment ranged from 7 to 71 months (mean 41 [SE 5] months). Haemoglobin A1C concentrations declined from 8.5 (0.4)% at the end of the stabilisation phase to 7.0 (0.2)% at the analysis point (p = 0.0003). During the same time the frequencies of major and minor hypoglycaemic events also fell significantly (major 3.0 [1.1] to 0.1 [0], minor 13.0 [2.6] to 2.4 [0.8] per month; both p < 0.0001). Because the use of saline rather than insulin pulses would have led to unacceptable hyperglycaemia we opted for a historical control design. The absence of a true control group limits the interpretation of these preliminary results, but we believe further studies of hepatic and muscle metabolism before and after long-term intermittent intravenous insulin therapy would be worth while.[1]


  1. Long-term intermittent intravenous insulin therapy and type 1 diabetes mellitus. Aoki, T.T., Benbarka, M.M., Okimura, M.C., Arcangeli, M.A., Walter, R.M., Wilson, L.D., Truong, M.P., Barber, A.R., Kumagai, L.F. Lancet (1993) [Pubmed]
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