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Related Experiment Videos

Ranitidine improves postoperative monocyte and neutrophil function

H J Nielsen1, H Nielsen, S Jensen

  • 1Department of Surgical Gastroenterology, Hvidovre University Hospital, Denmark.

Archives of Surgery (Chicago, Ill. : 1960)
|March 1, 1994
PubMed
Summary
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Ranitidine hydrochloride improved immune function in patients undergoing surgery, preventing postoperative immunosuppression and infectious complications. This study highlights ranitidine

Area of Science:

  • Immunology
  • Pharmacology
  • Surgical Medicine

Background:

  • Histamine H2-receptor antagonist ranitidine hydrochloride is known to mitigate immunosuppression caused by trauma, blood transfusions, and sepsis.
  • Postoperative immune dysfunction can lead to complications and prolonged recovery.

Purpose of the Study:

  • To investigate the impact of ranitidine on monocyte and neutrophil function following major abdominal surgery.
  • To assess whether ranitidine can prevent the impairment of immune cell function observed in the postoperative period.

Main Methods:

  • A randomized controlled trial involving 24 patients undergoing major elective abdominal surgery.
  • Patients received either intravenous and oral ranitidine hydrochloride or no adjuvant treatment.
  • Monocyte and neutrophil chemotaxis and chemiluminescence were measured preoperatively and on postoperative days 1, 3, and 9.

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Main Results:

  • Ranitidine treatment significantly enhanced monocyte chemotaxis compared to controls.
  • While control patients showed increased neutrophil chemiluminescence, ranitidine exhibited a trend towards reducing it.
  • No infectious complications occurred in the ranitidine group, unlike five cases in the control group, which were linked to immune cell dysfunction.

Conclusions:

  • Ranitidine hydrochloride administration effectively improves postoperative immune function, specifically monocyte chemotaxis.
  • The findings support ranitidine's role in mitigating postoperative immunosuppression and reducing the incidence of infectious complications.