PLASMA CHROMOGRANIN-A - A MARKER OF SEROTONIN RELEASE AND OF EMESIS ASSOCIATED WITH CISPLATIN CHEMOTHERAPY

被引:34
作者
CUBEDDU, LX
OCONNOR, DT
PARMER, RJ
机构
[1] UNIV CALIF SAN DIEGO,DEPT MED,SAN DIEGO,CA 92103
[2] VET ADM MED CTR,SAN DIEGO,CA 92161
关键词
D O I
10.1200/JCO.1995.13.3.681
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Purpose: Emesis is a common side effect of cancer chemotherapy. Serotonin released from gastrointestinal enterochromaffin cells (ECC) may mediate chemotherapy-induced emesis. Since chromogranin A (CgA) is colocalized in ECC storage granules with serotonin, we tested the hypothesis that plasma CgA could mark emesis and serotonin release from ECC. Patients and Methods: The relationships between plasma CgA, serotonin release, and the development of vomiting following the first course of cisplatin chemotherapy were evaluated in 60 patients. Results: CgA levels increased in 59 of 60 patients (245% +/- 18% increase above baseline levels, P < .001). The time course of the increase in plasma CSA matched that of emesis and of urinary 5-hydroxyindoleacetic acid (5-HIAA). Significant (P < .001) positive correlations were found between the dose of cisplatin and the increases in plasma CgA, and between the changes in plasma CgA and urinary 5-HIAA after cisplatin (r = .54, n = 39, P < .001). The increase in plasma CgA after cisplatin did not correlate with changes in serum lactic dehydrogenase (LDH) activity, a marker of cell toxicity or lysis. Conclusion: Plasma CgA marks emesis and serotonin release induced by cisplatin. Since both CgA and serotonin are costored in ECC granules, we suggest that the source of release of each may be the ECC. Increases in plasma CgA are not explained by drug cytotoxicity. Exocytosis appears as the main mechanism by which cisplatin releases serotonin. This work further supports the role of serotonin as a mediator of emesis associated with cisplatin and suggests that plasma CgA level is a valuable tool in studies of chemotherapy-induced emesis. (C) 1995 by American Society of Clinical Oncology.
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页码:681 / 687
页数:7
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