Summary
An oral glucose tolerance test (OGTT) has been performed in a group of patients with
partial gastrectomy before and after transforming the anastomosis from Billroth type
II (B II) into Billroth type I (B I).
Glucose tolerance was normal in both groups. The statistically significant differences
in blood glucose (BG) values observed at 30 min between B I and normals and at 30,
60 and 90 min between B II and normals occur without concomitant changes in insulin
(IRI) plasma levels. In the course of the test a marked rise (statistically significant
from 30 to 180 min) in glucagon-like immunoreactants (GLI) plasma levels was noted
in B II patients and has been attributed to the rapid intestinal transit. Otherwise,
the restoration of duodenal passage induced a clear decrease of GLI levels which returned
to normal values. Increased immunoreactive glucagon (IRG) plasma levels in B II group
do not seem to be due to crossreactivity with GLI.
The raised BG levels occurring in B II cannot be attributed either to a reduced insulin
secretion or to an increase in biologically active components of glucagon.
Key-Words:
Partial Gastrectomy Billroth Type II and Billroth Type I
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Oral Glucose Tolerance Test
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Immunoreactive Insulin
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Immunoreactive Glucagon
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Glucagon-Like Immunoreactants
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Glicentin
