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Biomedical subjects

Y Harano

Publications and source records attributed to Y Harano.

At least 109 records · Page 6Linked to original sources
PubMed1977

Glucose, insulin and somatostatin infusion for the determination of insulin sensitivity.

Glucose, insulin and somatostatin infusion over 2 hours effectively suppressed endogenous secretion of insulin, glucagon and growth hormones. Steady state plasma glucose level (SSPG) which should be inversely proportional to insulin sensitivity was obtained. In 6 adult-onset non-obese untreated diabetics, mean value of insulin sensitivity indices was significantly reduced compared with normal. In 5 insulin-treated diabetics and in 5 subjects with borderline glucose tolerance including 2 obese subjects, insulin sensitivity for glucose utilization was also significantly diminished.

Blood Glucose↗
PubMed1977

[Insulinoma].

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Adenoma, Islet Cell↗
PubMed1975

Radioselenium pancreozymin-secretin test as a clinical test for pancreatic exocrine function.

The appearance of radioselenium in the protein fraction of duodenal aspirates has been studied after an intravenous injection of 75-Se-selenomethionine. The continuous flow of pancreatic juice was stimulated by pancreozymin at 120 minutes and by secretin at 140 minutes. A good distinction between normal subjects and patients with pancreatic disease was obtained by measuring 75-Se-radioactivity in the protein fraction of duodenal aspirates; either cumulative radioactivity during the combined 80-minute post-pancreozymin-secretin period, or maximum 75-Se-specific activity during the postsecretin period was used as an index. The test presented here might be a useful and sufficiently reliable method for detecting abnormal pancreatic exocrine function. This test can be performed along with the conventional pancreozymin-secretin test, serum enzyme response to pancreozymin and secretin, and pancreatic scintiscanning.

Amylases↗
PubMed1975

Qualitative abnormality of insulin secretion in a case with insulinoma.

We have presented here a case of atypical insulinoma. Despite the recurrent episodes of hypoglycemic symptoms, the plasma level of insulin has never been excessive at fasting or by regular provocative tests. Detailed examination had demonstrated qualitative abnormality of insulin secretion. Hyposuppressibility of insulin secretion by hypoglycemia, borderline diabetic curve of glucose tolerance test, blunted response ot insulin to glucagon and leucine were the principle characteristics of these abnormalities. After removal of adenoma, insulin response to glucose, glucagon and leucine was improved. Only secretion provoked a high level of insulin and this abnormal elevation was no longer seen after the removal of adenoma. A removed elevation was no longer seen after the removal of adenoma. A removed insulinoma contained 25 U of immunoreactive insulin per gram tissue, but was negative for aldehyde-fuchsin staining. On electromicroscopy only atypical beta-cell granules were seen.

Adenoma↗