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  • Title: Increased transforming growth factor beta1 plasma level in patients with renal cell carcinoma: a tumor-specific marker?
    Author: Wunderlich H, Steiner T, Kosmehl H, Junker U, Reinhold D, Reichelt O, Zermann DH, Schubert J.
    Journal: Urol Int; 1998 Aug; 60(4):205-7. PubMed ID: 9701731.
    Abstract:
    PURPOSE: The most worrying problem with renal cell carcinoma (RCC) seems to be the prediction of metastases by means of tumor-specific markers. Therefore, much effort is committed to the development of new markers. MATERIALS AND METHODS: The level of latent transforming growth factor beta1 (TGF-beta1) was measured in plasma samples by ELISA. These samples were collected from patients with RCC before they underwent radical nephrectomy, from patients 1 h after extracorporeal lithotripsy, from patients with pyelonephritis, and from healthy controls. RESULTS: In all cases of RCC the levels of latent TGF-beta1 in plasma were much higher (n = 20, 41.0 +/- 13.9 ng/ml, range 19.3-78.1 ng/ml) than in healthy controls (n = 20, 3.8 +/- 2.9 ng/ml, range 0.6-9.9 ng/ml, p < 0.0001). The TGF-beta1 levels in plasma after extracorporeal lithotripsy (n = 20, 7.4 +/- 4. 64 ng/ml, range 2.9-21.7 ng/ml, p < 0.01) and in patients suffering from pyelonephritis (n = 20, 18.93 +/- 14.2 ng/ml, range 4.2-46.7 ng/ml, p < 0.001) were also higher than in healthy controls. CONCLUSION: We conclude that increased levels of latent TGF-beta1 are common in the plasma of RCC patients. The TGF-beta1 plasma level in RCC was found to be significantly higher than in cases of inflammation. Thus, TGF-beta1 is a possible tumor-prognostic marker in RCC.
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