Tissue polypeptide-specific antigen in renal cell carcinoma

Utilidad de marcadores séricos del carcinoma renal

OBJECTIVES

To select a group of useful serum markers in renal cell carcinoma (RCC) with investigational purpose in future.

MATERIAL AND METHODS

Periodic determination in serum of 21 RCC patients of the following markers: EGR, RPC, hemogram and leucocyte differential count (LDC), standard biochemist parameters, beta-2 microglobuline, CEA, CA 12.5, CA 50, CA 15.3, ferritin, interleukin-6, serum interleukin-2 receptor, TNF-alpha and TPSA.

RESULTS

Different elements within the LDC had relations with the presence of symptoms/signs, tumour size, pathological stage and disease progression. There was a significant increase of beta-2 microglobuline and sIL-2 receptor when disease progressed, as well as a similar statistical trend with RPC and alkaline phosphatases. Beta-2 microglobuline and sIL-2 receptor also decreased after treatment of the disease progression.

CONCLUSIONS

We will keep analysing hemogram, LDC and standard byochemics, RPC, ferritin, beta-2 microglobuline and sIL-2 receptor only with investigational purposes, obviating the determination of the rest of the tested markers.

Tissue polypeptide-specific antigen in pediatric patients: assessment of normal values

Measurement of serum concentrations of tissue polypeptide-specific Antigen (TPS) has been demonstrated to the useful in diagnosis and monitoring of adult epithelial tumors. So far, no data have been available on normal or pathologic TPS values in children. Therefore, the present study was designed to evaluate the normal values of TPS in childhood. Using a commercial enzyme linked immunosorbent assay (ELISA) kit, serum TPS was determined in 361 healthy children. Median (M) TPS was found to be 107 U/l at birth (n = 124). By the end of the first week, the value rose to M = 150 U/l (n = 68) and then continuously decreased with age (1 week-1 year, n = 45, M = 88 U/l; 1-7 years, n = 75, M = 51 U/l) until reaching the adult level (8-18 years, n = 49, M = 34 U/l). Additionally, the serum TPS values of 45 mothers right after delivery (M = 161 U/l) were assessed, and there was no correlation to the marker levels determined in the cord blood of their children. The age-dependent distribution of serum TPS in healthy children must be taken into account in the clinical application of this tumor marker.

Tissue polypeptide-specific antigen in pediatric patients: assessment of normal values

Measurement of serum concentrations of tissue polypeptide-specific Antigen (TPS) has been demonstrated to the useful in diagnosis and monitoring of adult epithelial tumors. So far, no data have been available on normal or pathologic TPS values in children. Therefore, the present study was designed to evaluate the normal values of TPS in childhood. Using a commercial enzyme linked immunosorbent assay (ELISA) kit, serum TPS was determined in 361 healthy children. Median (M) TPS was found to be 107 U/l at birth (n = 124). By the end of the first week, the value rose to M = 150 U/l (n = 68) and then continuously decreased with age (1 week-1 year, n = 45, M = 88 U/l; 1-7 years, n = 75, M = 51 U/l) until reaching the adult level (8-18 years, n = 49, M = 34 U/l). Additionally, the serum TPS values of 45 mothers right after delivery (M = 161 U/l) were assessed, and there was no correlation to the marker levels determined in the cord blood of their children. The age-dependent distribution of serum TPS in healthy children must be taken into account in the clinical application of this tumor marker.