Alpha CTX as a biomarker of skeletal invasion of breast cancer: immunolocalization and the load dependency of urinary excretion.

July 1, 2006

Cancer Epidemiol Biomarkers Prev

Abstract We recently showed that increased urinary excretion of the cross-linked, nonisomerized form of the C-telopeptide of collagen type I (alphaalphaCTX) could be a sensitive indicator of the presence of bone metastases in breast cancer patients. The present study was sought to investigate (a) the localization of alphaCTX epitopes in the proximity of a bone […]

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Lack of hepatic metabolism of C-telopeptides of type I collagen.

April 1, 2006

Clin Chim Acta

Abstract BACKGROUND Bone biochemical markers have been used in dynamic studies of bone metabolism, and, for accurate interpretation of measured marker levels, it is essential to have information of extra-skeletal metabolism. Therefore, the objective of the present study was to investigate if the circulating C-telopeptides of type I collagen (CTX) was subject to hepatic extraction. […]

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Degradation of the organic phase of bone by osteoclasts: a secondary role for lysosomal acidification.

January 1, 2006

J Bone Miner Res

Abstract UNLABELLED Osteoclasts degrade bone matrix by secretion of hydrochloric acid and proteases. We studied the processes involved in the degradation of the organic matrix of bone in detail and found that lysosomal acidification is involved in this process and that MMPs are capable of degrading the organic matrix in the absence of cathepsin K. […]

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The relative use of eight collagenous and noncollagenous markers for diagnosis of skeletal metastases in breast, prostate, or lung cancer patients.

January 1, 2006

Cancer Epidemiol Biomarkers Prev

Abstract The present study was sought to assess the relative use of eight biomarkers for the detection of bone metastases in cancer forms frequently spreading to the skeleton. Participants were 161 patients with either breast, prostate, or lung cancer. The presence and extent of bone metastases was assessed by imaging techniques (computer tomography and/or magnetic […]

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