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Pyridinoline cross-linked carboxyterminal telopeptide of type I collagen as a useful marker for monitoring metastatic bone activity in men with prostate cancer. 2001

M Noguchi, and S Noda
Department of Urology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, 830-0011 Japan.

OBJECTIVE We investigated the clinical usefulness of measuring the serum concentrations of pyridinoline cross-linked carboxyterminal telopeptide of type I collagen (ICTP) and carboxyterminal propeptide of type I procollagen (PICP) as markers for monitoring metastatic bone activity in patients with prostate cancer. METHODS Serum levels of ICTP, PICP, alkaline phosphatase, prostatic acid phosphatase and prostate specific antigen (PSA) were analyzed in 104 untreated patients with prostate cancer, including 62 with and 42 without bone metastasis. Serial measurements of ICTP, PICP and PSA were performed during hormonal therapy in 35 of 62 prostate cancer patients with bone metastasis. RESULTS Serum levels of all markers except prostatic acid phosphatase were significantly higher with than without bone metastasis. The median values of each marker increased according to the extent of bone metastasis. Serial ICTP, PICP and PSA in 19 patients with a partial response or no change in bone scans demonstrated a downward trend after treatment, while in 16 with progression they showed an upward trend after treatment. The rate of detecting bone metastasis and progression using ICTP were highest compared with other markers based on the percent clinical effectiveness and receiver operating characteristic curves. CONCLUSIONS Measuring serum ICTP may be useful for detecting bone metastasis and prostate cancer progression, and may augment PSA and bone scan monitoring of metastatic bone activity.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010446 Peptide Fragments Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques. Peptide Fragment,Fragment, Peptide,Fragments, Peptide
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D011347 Procollagen A biosynthetic precursor of collagen containing additional amino acid sequences at the amino-terminal and carboxyl-terminal ends of the polypeptide chains. Protocollagen,Procollagen Type M
D011471 Prostatic Neoplasms Tumors or cancer of the PROSTATE. Cancer of Prostate,Prostate Cancer,Cancer of the Prostate,Neoplasms, Prostate,Neoplasms, Prostatic,Prostate Neoplasms,Prostatic Cancer,Cancer, Prostate,Cancer, Prostatic,Cancers, Prostate,Cancers, Prostatic,Neoplasm, Prostate,Neoplasm, Prostatic,Prostate Cancers,Prostate Neoplasm,Prostatic Cancers,Prostatic Neoplasm
D001859 Bone Neoplasms Tumors or cancer located in bone tissue or specific BONES. Bone Cancer,Cancer of Bone,Cancer of the Bone,Neoplasms, Bone,Bone Neoplasm,Neoplasm, Bone
D003094 Collagen A polypeptide substance comprising about one third of the total protein in mammalian organisms. It is the main constituent of SKIN; CONNECTIVE TISSUE; and the organic substance of bones (BONE AND BONES) and teeth (TOOTH). Avicon,Avitene,Collagen Felt,Collagen Fleece,Collagenfleece,Collastat,Dermodress,Microfibril Collagen Hemostat,Pangen,Zyderm,alpha-Collagen,Collagen Hemostat, Microfibril,alpha Collagen
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000135 Acid Phosphatase An enzyme that catalyzes the conversion of an orthophosphoric monoester and water to an alcohol and orthophosphate. EC 3.1.3.2. Acid beta-Glycerophosphatase,Acid beta Glycerophosphatase

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