title: Comparison of calbindin D-28k and S-100 protein B in neuroblastoma as determined by enzyme immunoassay.
abstract: Levels of two calcium-building proteins, calbindin D-28k (calbindin-D) and S-100 protein B (S-100b), were measured by immunoassay in solid tumors obtained surgically from pediatric patients. Mean concentrations of calbindin-D and S-100b in 73 neuroblastomas (23 ganglioneuroblastomas and 50 neuroblastomas) were 10- or 25-fold higher, respectively, than those in other types of solid tumors in pediatric patients (n = 15). The mean tumor concentration of calbindin-D in patients with neuroblastoma (n = 73) was 25.1 ng/mg (range 0.20 to 317.0 ng/mg soluble protein, SE = 6.26); that of S-100b was 278.3 ng/mg (range 0.93 to 2521 ng/mg soluble protein, SE = 71.7). The mean concentration of calbindin-D (4.4 ng/mg soluble protein) was significantly (P < 0.05) lower in stage IV, the most advanced stage. The mean concentration of S-100b (74.0 ng/mg soluble protein) was lower in patients with undifferentiated neuroblastomas (P < 0.01). Tumor levels of the two calcium-binding proteins were not correlated in patients with neuroblastoma, but each was strongly correlated with outcome in patients with neuroblastoma. The evidence suggests that measurements of the calcium-binding proteins calbindin-D and S-100b would be useful for evaluating the prognosis of patients with neuroblastoma.
authors.affiliation: Department of Surgery of Branch Hospital, Nagoya University School of Medicine.
authors.forename: Y
authors.initials: Y
authors.lastname: Ishiguro
authors.forename: K
authors.initials: K
authors.lastname: Kato
authors.forename: H
authors.initials: H
authors.lastname: Akatsuka
authors.forename: H
authors.initials: H
authors.lastname: Iwata
authors.forename: F
authors.initials: F
authors.lastname: Ito
authors.forename: Y
authors.initials: Y
authors.lastname: Watanabe
authors.forename: M
authors.initials: M
authors.lastname: Nagaya
mesh_terms: D000293:Adolescent; D000311:Adrenal Glands / Q000737:chemistry; D064026:Calbindins; D002135:Calcium-Binding Proteins / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009363:Neoplasm Proteins / Q000032:analysis*; D009367:Neoplasm Staging; D009414:Nerve Growth Factors; D009447:Neuroblastoma / Q000737:chemistry* / Q000473:pathology; D011379:Prognosis; D064030:S100 Calcium Binding Protein G / Q000032:analysis*; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins / Q000032:analysis*
chemical_list: D064026:Calbindins; D002135:Calcium-Binding Proteins; D009363:Neoplasm Proteins; D009414:Nerve Growth Factors; D064030:S100 Calcium Binding Protein G; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins