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Does nicotine administration influence intragastric acidity?

G Lindell1, L Brudin, P Ohlin

  • 1Dept. of Surgery, Helsingborg Hospital, Sweden.

Scandinavian Journal of Gastroenterology
|January 1, 1992
PubMed
Summary
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Nicotine, the active compound in cigarettes, impairs the stomach's ability to neutralize acid after meals. This finding may explain why smokers experience more stomach ulcers and slower healing.

Area of Science:

  • Gastroenterology
  • Pharmacology

Background:

  • Smokers exhibit higher duodenal ulcer incidence and relapse rates.
  • The precise mechanisms by which smoking impacts gastric secretion and healing remain unclear.

Purpose of the Study:

  • To investigate whether nicotine administration alone alters intragastric pH.
  • To determine nicotine's effect on gastric acid neutralization, particularly postprandial neutralization.

Main Methods:

  • Eight healthy smokers received nicotine via nasal spray.
  • Intragastric pH was monitored acutely after spraying and over a day with hourly administration.
  • Data were compared to a control day using a placebo.

Main Results:

  • Acute nicotine administration did not significantly change intragastric pH.

Related Experiment Videos

  • Hourly nicotine administration impaired postprandial gastric neutralization compared to placebo (median pH 1.93 vs. 2.86).

    • Conclusions:

    • Nicotine alone appears to hinder the stomach's ability to neutralize acid after meals.
    • Potential mechanisms include nicotine-induced alterations in gastric motility or gastrin release.