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Plasma pancreatic glucagon in pancreatic and primary diabetes, and liver cirrhosis: Application of a correction to the radioimmunoassay for pancreatic glucagon

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Summary

Evidence is present that plasma contains non-specific factors which interfere with the 30K glucagon assays. A correction can be made for these interference factors because the factors can be quantitated following absorption of glucagon with charcoal-dextran. Using a correction factor the range of fasting plasma immunoreactive glucagon (IRG) in 12 totally pancreatectomized patients was below detectable limit.

Fasting levels of IRG were determined on the plasma from 25 liver cirrhotics complicated by abnormal GTT, 13 pancreatic diabetics with chronic calcified pancreatitis (CCP), 25 adult-onset primary diabetics and 25 healthy subjects. When all samples were measured using no correction factor, the mean levels of IRG were 358 ± 24 (mean ± SE), 170 ± 26, 178 ± 16 and 178 ± 7 pg/ml, respectively. Using a correction factor the mean levels of IRG were 177 ± 26, 16 ± 4, 39 ± 9 and 20 ± 4 pg/ml, respectively. The mean values of the interference factor were not significantly different among all five groups. During an arginine infusion the interference factor remained unchanged despite an increase in IRG.

It is available but not always necessary to apply a correction factor for 30K glucagon radioimmunoassay.

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Authors and Affiliations

  1. The Second Department of Internal Medicine, Nagoya University School of Medicine, 65 Tsuruma-cho, Showa-ku, 466, Nagoya, Japan

    Nobuyoshi Okumura M.D., Tetsuo Hayakawa M.D., Aiji Noda M.D. & Takaharu Kondo M.D.

  2. The First Department of Surgery, Nagoya University School of Medicine, 65 Tsuruma-cho, Showa-ku, 466, Nagoya, Japan

    Kenzo Yasui M.D., Kojiro Gtsuka M.D. & Yuji Nimura M.D.

Authors
  1. Nobuyoshi Okumura M.D.
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  2. Tetsuo Hayakawa M.D.
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  3. Kenzo Yasui M.D.
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  4. Aiji Noda M.D.
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  5. Takaharu Kondo M.D.
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  6. Kojiro Gtsuka M.D.
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  7. Yuji Nimura M.D.
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Additional information

This study was supported by a research grant of Intractable Pancreatic Disease from the Intractable Division, Public Health Bureau, Ministry of Health and Welfare, Japan.

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Okumura, N., Hayakawa, T., Yasui, K. et al. Plasma pancreatic glucagon in pancreatic and primary diabetes, and liver cirrhosis: Application of a correction to the radioimmunoassay for pancreatic glucagon. Gastroenterol Jpn 17, 347–352 (1982). https://doi.org/10.1007/BF02774581

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  • DOI: https://doi.org/10.1007/BF02774581

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