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Fasting prevents acute pancreatitis induced by cerulein in rats

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Abstract

We examined the effect of fasting on the course of experimental acute pancreatitis induced in rats by four subcutaneous injections of 20 μg/kg body weight of cerulein at hourly intervals. Rats were either fasted from 24 hr before to 9 hr after the first cerulein injection or fed ad libitumthroughout the experiment. Twenty-four hours of fasting reduced cerulein-induced increases in serum levels of amylase and anionic trypsin(ogen) to 50 and 70% of those in fed rats, respectively. Increases in pancreatic wet weight after cerulein injections were also less in fasted rats than in fed rats. Pancreatic content of trypsin was significantly decreased after a 24-hr fast, and no further changes were induced by cerulein injections. The histological signs of acute pancreatitis were greatly alleviated by fasting. However, 24 hr of fasting did not alter the sensitivity and responsiveness of the exocrine pancreas to cerulein in both in vivoand in vitro.Plasma CCK bioactivity and immunoreactive secretin concentration in 24-hr-fasted rats were significantly lower than those in fed rats. Administration of CCK receptor antagonist, loxiglumide, 12 hr prior to the induction of acute pancreatitis reduced the increase in serum amylase activity in fed rats to nearly the same levels as that in fasted rats and alleviated histological signs of pancreatitis to some extent. These present observations suggest that fasting lessens the severity of cerulein-induced acute pancreatitis by reducing endogenous CCK release.

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Authors and Affiliations

  1. Second Department of Internal Medicine and the First Department of Pathology, Kobe University School of Medicine, Kusunoki-cho, Chuo-ku, 650, Kobe, Japan

    Makoto Otsuki MD, PhD, Satoshi Tani MD, PhD, Yoshinori Okabayashi MD, PhD, Masatoshi Fujii MD, PhD, Takahiko Nakamura MD, PhD, Takashi Fujisawa MD, Makoto Koide MD & Hiroshi Itoh MD, PhD

Authors
  1. Makoto Otsuki MD, PhD
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  2. Satoshi Tani MD, PhD
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  3. Yoshinori Okabayashi MD, PhD
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  4. Masatoshi Fujii MD, PhD
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  5. Takahiko Nakamura MD, PhD
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  6. Takashi Fujisawa MD
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  7. Makoto Koide MD
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  8. Hiroshi Itoh MD, PhD
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Additional information

This work was supported in part by a grant from the Japanese Ministry of Health and Welfare and Grant-in-Aid for Scientific Research (C).

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Otsuki, M., Tani, S., Okabayashi, Y. et al. Fasting prevents acute pancreatitis induced by cerulein in rats. Digest Dis Sci 35, 840–848 (1990). https://doi.org/10.1007/BF01536797

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  • DOI: https://doi.org/10.1007/BF01536797

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