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The Effects of Capsaicin on Gastrin Secretion in Isolated Human Antral Glands: Before and After Ingestion of Red Chilli
Linköping University, Department of Clinical and Experimental Medicine, Cell Biology. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine. Linköping University, Faculty of Health Sciences.
Karolinska University Hospital.
Linköping University, Department of Medicine and Health Sciences, Internal Medicine . Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Centre for Medicine, Department of Endocrinology and Gastroenterology UHL.
2009 (English)In: Digestive Diseases and Sciences, ISSN 0163-2116, Vol. 54, no 3, 491-498 p.Article in journal (Refereed) Published
Abstract [en]

Background: Capsaicin is known to have regulatory effects on gastrointestinal functions via the vanilloid receptor (VR1). We reported previously that endocrine-like cells in the human antrum express VR1.

Aim: To identify VR1-expressing endocrine-like cells in human antral glands and to examine whether stimulation with capsaicin causes release of gastrin, somatostatin, and serotonin. Further, to investigate the effects of a chilli-rich diet.

Methods: Gastroscopic biopsies were received from 11 volunteers. Seven of the 11 subjects agreed to donor gastric biopsies a second time after a 3-week chilli-rich diet containing 1.4-4.2 mg capsaicin/day. VR1-immunoreactive cells were identified by double-staining immunohistochemistry against gastrin, somatostatin, and serotonin. For the stimulation studies, we used an in vitro method where antral glands in suspension were stimulated with 0.01 mM capsaicin and physiological buffer was added to the control vials. The concentrations of secreted hormones were detected and calculated with radioimmunoassay (RIA).

Results: The light microscopic examination revealed that VR1 was localized in gastrin cells. The secretory studies showed an increase in release of gastrin and somatostatin compared to the control vials (P = 0.003; P = 0.013). Capsaicin-stimulation caused a consistent raise of the gastrin concentrations in the gland preparations from all subjects. A chilli-rich diet had an inhibitory effect on gastrin release upon stimulation compared to the results that were obtained before the start of the diet.

Conclusion: This study shows that capsaicin stimulates gastrin secretion from isolated human antral glands, and that a chilli-rich diet decreases this secretion.

Place, publisher, year, edition, pages
2009. Vol. 54, no 3, 491-498 p.
Keyword [en]
Capsaicin, Gastrin cells, Gastric hormone-release, Immunohistochemistry, Radioimmunoassay
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-16872DOI: 10.1007/s10620-008-0400-1OAI: diva2:174420
Available from: 2009-02-22 Created: 2009-02-20 Last updated: 2009-08-18

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Ericson, Ann-CharlottKechagias, Stergios
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Cell BiologyFaculty of Health SciencesDepartment of Clinical and Experimental MedicineInternal Medicine Department of Endocrinology and Gastroenterology UHL
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