Calcitonin elevation in small cell lung cancer without ectopic production

Michael J. Kelley, Kenneth L. Becker, Jeanne M. Rushin, David Venzon, Ruby Phelps, Daniel C. Ihde, David P. Bliss, Kenneth Melby, Richard H. Snider, Bruce E. Johnson

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

To determine the relative contribution of ectopic calcitonin (CT) production versus nonectopic secretion of CT in patients with small cell lung cancer (SCLC), serum and urine immunoreactive CT (iCT) levels of 86 different subjects were measured by radioimmunoassay (RIA) using two polyclonal antisera (Ab3b and Ab4). The subjects included 49 previously untreated patients with SCLC, 17 smokers, and 20 nonsmokers. Serum and urine iCT values were highest in the patients with SCLC, intermediate in the smokers, and lowest in the nonsmokers (p < 0.0003). Sixteen of the 49 patients with SCLC had tumor cell lines available for determination of CT mRNA expression by RNase protection assay (RPA) and iCT production by RIA. CT mRNA was detected in nine of 16 subjects and iCT in eight of 16. The tumor cell lines of seven patients had undetectable CT by both RPA and RIA, and of these, five had elevated urine or serum iCT values compared with those of nonsmokers, and two had levels above all values in the smoker group. Immunohistochemical staining of formalin-fixed, paraffin-embedded tumor samples detected iCT in two of four tumors from patients whose tumor cell lines had CT mRNA by RPA and iCT by RIA, but in none of six whose tumor cell lines had undetectable CT mRNA. Thus, increased iCT values in some patients with SCLC are likely due to sources other than CT production by tumor cells.

Original languageEnglish (US)
Pages (from-to)183-190
Number of pages8
JournalAmerican Journal of Respiratory and Critical Care Medicine
Volume149
Issue number1
StatePublished - Jan 1994

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Small Cell Lung Carcinoma
Calcitonin
Tumor Cell Line
Radioimmunoassay
Ribonucleases
Messenger RNA
Urine
Serum
Neoplasms
Paraffin
Formaldehyde
Immune Sera
Staining and Labeling

ASJC Scopus subject areas

  • Medicine(all)
  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine

Cite this

Kelley, M. J., Becker, K. L., Rushin, J. M., Venzon, D., Phelps, R., Ihde, D. C., ... Johnson, B. E. (1994). Calcitonin elevation in small cell lung cancer without ectopic production. American Journal of Respiratory and Critical Care Medicine, 149(1), 183-190.

Calcitonin elevation in small cell lung cancer without ectopic production. / Kelley, Michael J.; Becker, Kenneth L.; Rushin, Jeanne M.; Venzon, David; Phelps, Ruby; Ihde, Daniel C.; Bliss, David P.; Melby, Kenneth; Snider, Richard H.; Johnson, Bruce E.

In: American Journal of Respiratory and Critical Care Medicine, Vol. 149, No. 1, 01.1994, p. 183-190.

Research output: Contribution to journalArticle

Kelley, MJ, Becker, KL, Rushin, JM, Venzon, D, Phelps, R, Ihde, DC, Bliss, DP, Melby, K, Snider, RH & Johnson, BE 1994, 'Calcitonin elevation in small cell lung cancer without ectopic production', American Journal of Respiratory and Critical Care Medicine, vol. 149, no. 1, pp. 183-190.
Kelley MJ, Becker KL, Rushin JM, Venzon D, Phelps R, Ihde DC et al. Calcitonin elevation in small cell lung cancer without ectopic production. American Journal of Respiratory and Critical Care Medicine. 1994 Jan;149(1):183-190.
Kelley, Michael J. ; Becker, Kenneth L. ; Rushin, Jeanne M. ; Venzon, David ; Phelps, Ruby ; Ihde, Daniel C. ; Bliss, David P. ; Melby, Kenneth ; Snider, Richard H. ; Johnson, Bruce E. / Calcitonin elevation in small cell lung cancer without ectopic production. In: American Journal of Respiratory and Critical Care Medicine. 1994 ; Vol. 149, No. 1. pp. 183-190.
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