Journal List > Tuberc Respir Dis > v.60(3) > 1000923

Yang, Roh, Lee, Kim, Lee, Choi, Bang, Kim, Seo, Kim, Kim, Lee, and Son: The Relationship between Heme Oxygenase-1 Expression and Response to Cisplatin Containing Chemotherapy in Advanced Non-Small Cell Lung Cancer

Abstract

Background

The overall response (20-30%) to chemotherapy in non-small cell lung cancer (NSCLC) is quite poor. Heme oxygenase-1 (HO-1) is the rate-limiting enzyme in heme degradation. There is increasing evidence suggesting that the induction of HO-1 might have an important protective effect against oxidative stress including cisplatin containing chemotherapy. This study retrospectively investigated the relationship between HO-1 expression and the response to chemotherapy containing cisplatinin advanced NSCLC patients.

Material and Methods

The medical records including the responses to chemotherapy of fifty nine cases were evaluated retrospectively, and the tissue samples of these patients were immunohistochemically stained for HO-1.

Results

Forty three of the fifty nine patients(72.8%) showed positive staining for HO-1 in their cancer tissues. There was no significant difference according to the cell type, stage and tumor size. In addition, there was no correlation between HO-1 expression and the responses to chemotherapy.

Conclusion

HO-1 expression in tumor tissue dose not predict the response to cisplatin containing chemotherapy in advanced NSCLC. Further prospective studies with a larger number of patients will be needed to confirm these results.

Figures and Tables

Figure 1
Immunohistochemical staining for HO-1. (A) negative HO-1 expression (×200), (B) positive HO-1 expression in adenocarcinoma (×200), (C) positive HO-1 expression in squamous cell carcinoma (×200), (D) positive HO-1 expression in non-small cell lung cancer (×200).
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Table 1
Patients Characteristics
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*TP : docetaxel + cisplatin,

NIP : vinorelbin + ifosphamide + cisplatin,

MIP : mitomycin + ifosphamide + cisplatin,

§VP : etoposide + cisplatin

Table 2
Correlation of clinical factors with HO-1
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Table 3
Correlation of clinical factors and HO-1 with response to chemotherapy.
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