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Prognostic Importance of Vitamins A, E and Retinol-binding Protein 4 in Renal Cell Carcinoma Patients
R. Sobotka, O. Čapoun, M. Kalousová, T. Hanuš, T. Zima, M. Koštířová, V. Soukup,
Language English Country Greece
Document type Journal Article
NLK
Free Medical Journals
from 2004 to 2 years ago
Open Access Digital Library
from 2004-01-01
- MeSH
- Survival Analysis MeSH
- Adult MeSH
- Carcinoma, Renal Cell blood diagnostic imaging surgery MeSH
- Middle Aged MeSH
- Humans MeSH
- Young Adult MeSH
- Kidney Neoplasms blood diagnostic imaging surgery MeSH
- Nephrectomy MeSH
- Retinol-Binding Proteins, Plasma analysis MeSH
- Tomography, X-Ray Computed MeSH
- Preoperative Period MeSH
- Prognosis MeSH
- Aged, 80 and over MeSH
- Aged MeSH
- Vitamin A blood MeSH
- Vitamin E blood MeSH
- Vitamins blood MeSH
- Check Tag
- Adult MeSH
- Middle Aged MeSH
- Humans MeSH
- Young Adult MeSH
- Male MeSH
- Aged, 80 and over MeSH
- Aged MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
AIM: To assess the prognostic importance of serum levels of retinol, retinol-binding protein 4 (RBP4) and vitamin E at the time of diagnosis in patients with renal cell carcinoma (RCC). PATIENTS AND METHODS: In this prospective study, in a cohort of 102 renal cell carcinoma patients, relationships between serum levels of the aforementioned markers and recurrence-free survival (RFS), overall survival (OS), as well as cancer-specific survival (CSS), were evaluated. The vitamin A and vitamin E levels were determined by high-performance liquid chromatography (HPLC), while the RBP4 level by enzyme-linked immunosorbent assay (ELISA). RESULTS: The median follow-up period was 39 months. Renal cell carcinoma recurred in 9 patients; 23 patients died with 12 of them from RCC. The preoperative vitamin E level was associated to RFS (p=0.02). We found a significant relationship between OS and the level of RBP4 (p=0.002), retinol (p=0.037) and vitamin E (p=0.007). The CSS period was significantly associated with the level of RBP4 (p=0.0001) and retinol (p=0.0003). Patients with an RBP4 level less than 21.0 mg/l at the time of diagnosis had a 13.5-times higher risk of death due to RCC progression; this risk was up to 7.7-times higher with vitamin A levels under 0.52 mg/l. CONCLUSION: Low levels of vitamin A, E and RBP4 at the time of RCC diagnosis are associated with a poorer prognosis after surgery.
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- $a AIM: To assess the prognostic importance of serum levels of retinol, retinol-binding protein 4 (RBP4) and vitamin E at the time of diagnosis in patients with renal cell carcinoma (RCC). PATIENTS AND METHODS: In this prospective study, in a cohort of 102 renal cell carcinoma patients, relationships between serum levels of the aforementioned markers and recurrence-free survival (RFS), overall survival (OS), as well as cancer-specific survival (CSS), were evaluated. The vitamin A and vitamin E levels were determined by high-performance liquid chromatography (HPLC), while the RBP4 level by enzyme-linked immunosorbent assay (ELISA). RESULTS: The median follow-up period was 39 months. Renal cell carcinoma recurred in 9 patients; 23 patients died with 12 of them from RCC. The preoperative vitamin E level was associated to RFS (p=0.02). We found a significant relationship between OS and the level of RBP4 (p=0.002), retinol (p=0.037) and vitamin E (p=0.007). The CSS period was significantly associated with the level of RBP4 (p=0.0001) and retinol (p=0.0003). Patients with an RBP4 level less than 21.0 mg/l at the time of diagnosis had a 13.5-times higher risk of death due to RCC progression; this risk was up to 7.7-times higher with vitamin A levels under 0.52 mg/l. CONCLUSION: Low levels of vitamin A, E and RBP4 at the time of RCC diagnosis are associated with a poorer prognosis after surgery.
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- $a Čapoun, Otakar $u Department of Urology, General University Hospital and 1st Faculty of Medicine, Charles University, Prague, Czech Republic.
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- $a Kalousová, Marta $u Institute of Medical Biochemistry and Laboratory Diagnostics, General University Hospital and 1st Faculty of Medicine, Charles University, Prague, Czech Republic.
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- $a Soukup, Viktor $u Department of Urology, General University Hospital and 1st Faculty of Medicine, Charles University, Prague, Czech Republic viktor.soukup@seznam.cz.
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