• Hepato Gastroenterol · May 2010

    The peculiar processing of pancreatic hormone glucagon seen in traumatized patients.

    • Katsuhisa Tanjoh, Takashi Moriya, and Kosaku Kinoshita.
    • Department of Acute Medicine, Nihon University School of Medicine, 30-1 Ohyaguchi Kamimachi Itabashi-ku, Tokyo 173-8610, Japan. ktanjoh@med.nihon-u.ac.jp
    • Hepato Gastroenterol. 2010 May 1;57(99-100):620-4.

    Background/AimThe kinetics of the pancreatic hormone glucagon in traumatized patients has not been minutely investigated as well as that of insulin, despite its significant influence on energy metabolism. In the present study, we examined the kinetics of glucagon and glucagon-related peptides assessed by radioimmunoassay, and the molecular forms of these peptides using gel filtration chromatography. In addition, we discuss glucagon processes in the pancreas and intestine in traumatized patients in the early operative days.MethodologyTwelve traumatized patients who had undergone emergency surgery were enrolled in this study (group S). Ten healthy volunteers were also enrolled as normal control subjects (group C). The serum level of glucagon and glucagon-related peptides were assessed in the early morning fasting state in both groups, on the second postoperative day in group S, using the glucagon nonspecific N-terminal (glucagon-like immunoreactivity [GLI]) and specific C-terminal (immunoreactive glucagon [IRG]) radioimmunoassays. The molecular forms of these peptides were also estimated using the gel filtration chromatography method.ResultsSerum IRG in group S was significantly high compared with that of group C (P < .05). Serum GLI was not significantly different between both groups. In all 12 patients in group S, a peculiar glicentin-like peptide (GLLP: MW approximately 8000 Da) other than pancreatic glucagon was seen on gel filtration chromatography, which was not seen in group C.ConclusionsThe kinetics and processing of glucagon in traumatized patients was different from those of healthy subjects. In traumatized patients, the peculiar processing of glucagon was processed in the intestine, which is different from the ordinary glucagon processing either in the pancreas or the intestine, generating a peculiar glicentin-like peptide (GLLP).

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