Metoclopramide stimulates catecholamine- and granin-derived peptide secretion from pheochromocytoma cells through activation of serotonin type 4 (5-HT4) receptors

被引：25

作者：

Guillemot, Johann ^{[1
]}

Compagnon, Patricia ^{[2
]}

Cartier, Dorthe ^{[1
]}

Thouennon, Erwan ^{[1
]}

Bastard, Christian ^{[3
]}

Lihrmann, Isabelle ^{[1
]}

Pichon, Perrine ^{[4
]}

Thuillez, Christian ^{[2
]}

Plouin, Pierre-Francois ^{[5
]}

Bertherat, Jerome ^{[6
]}

Anouar, Youssef ^{[1
]}

Kuhn, Jean-Marc ^{[4
]}

Yon, Laurent ^{[1
]}

Lefebvre, Herve ^{[1
,4
]}

机构：

[1] Univ Rouen, INSERM, IFRMP 23, U413,EA4310,DC2N, Mont St Aignan, France

[2] Rouen Univ Hosp, Inst Biomed Res, Dept Pharmacol, INSERM,U644, Rouen, France

[3] Ctr Henri Becquerel, Lab Oncol Genet, F-76038 Rouen, France

[4] Rouen Univ Hosp, Inst Biomed Res, Dept Endocrinol, Rouen, France

[5] Paris Descartes Univ, Hop Europeen Georges Pompidou, AP HP, Hypertens Unit, Paris, France

[6] Paris Descartes Univ, Cochin Hosp, Cochin Inst, AP HP,CNRS,INSERM,Dept Endocrinol,U567,UMR8104, Paris, France

来源：

关键词：

MACRONODULAR ADRENAL-HYPERPLASIA; HYPERTENSIVE CRISIS; ALDOSTERONE SECRETION; CHROMAFFIN CELLS; EXPRESSION; LOCALIZATION; PATIENT; MARKER; EM66; RAT;

D O I：

10.1677/ERC-08-0190

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

The gastroprokinetic agent metoclopramide is known to stimulate catecholamine secretion from pheochromocytomas. The aim of the study was to investigate the mechanism of action of metoclopramide and expression of serotonin type 4 (5-HT4) receptors in pheochromocytoma tissues. Tissue explants, obtained from 18 pheochromocytomas including the tumor removed from a 46-year-old female patient who experienced life-threatening hypertension crisis after metoclopramide administration and 17 additional pheochromocytomas (9 benign and 8 malignant) were studied. Cultured pheochromocytoma cells derived from the patient who previously received metoclopramide were incubated with metoclopramide and various 5-HT4 receptor ligands. In addition, total mRNAs were extracted from all the 18 tumors. Catecholamine- and granin-derived peptide concentrations were measured in pheochromocytoma cell incubation medium by HPLC and radioimmunological assays. In addition, expression of 5-HT4 receptor mRNAs in the 18 pheochromocytomas was investigated by the use of reverse transcriptase-PCR. Results: Metoclopramide and the 5-HT4 receptor agonist cisapride were found to activate catecholamine- and granin-derived peptide secretions by cultured tumor cells. Metoclopramide- and cisapride-evoked catecholamine- and granin-derived peptide productions were inhibited by the 5-HT4 receptor antagonist GR 113808. 5-HT4 receptor mRNAs were detected in the patient's tumor and the series of 17 additional pheochromocytomas. This study shows that pheochromocytomas express functional 5-HT4 receptors that are responsible for the stimulatory action of metoclopramide on catecholamine- and granin-derived peptide secretion. All 5-HT4 receptor agonists must therefore be contraindicated in patients with proven or suspected pheochromocytoma.

引用

页码：281 / 290

页数：10

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