Korean J Otolaryngol-Head Neck Surg.
1999 Apr;42(4):478-482.
The Transforming Growth Factor-beta1 Expression in Normal Laryngeal Mucosa, Laryngeal Dysplasia and Laryngeal Carcinoma
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- 1Department of Otolaryngology, College of Medicine, Kyunghee University, Seoul, Korea. enthn@unitel.co.kr
Abstract
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BACKGROUND AND OBJECTIVES: Transforming growth factor-beta1 (TGF-beta1) is a multifunctional regulator of cellular differentiation, motility and growth. Loss of sensitivity to the growth inhibitory effects by TGF-beta1 plays important roles in neoplastic progression. So expression of TGF-beta1 has been described in several tumors, but little is known about the role of TGF-beta1 in neoplastic progression of human larynx. The aim of this study was to investigate the role of TGF-beta1 in the neoplastic progression of human larynx.
MATERIALS AND METHODS
We evaluated the expression of TGF-beta1 using immunohistochemical study in 6 cases of normal laryngeal mucosa, 6 cases of laryngeal dysplasia, 20 cases of laryngeal carcinoma.
RESULTS
The results were as follows: 1) Normal laryngeal mucosa has no expression of TGF-beta1. 2) The expression of TGF-beta was 16.7% in laryngeal dysplasia, 50.0% in laryngeal carcinoma.
CONCLUSION
The TGF-beta1 expression rate was correlated to the progression of laryngeal lesions when compared to normal laryngeal mucosa, laryngeal dysplasia and laryngeal carcinoma.
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