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Urinary cross-linked N-telopeptides of type I collagen and bone metabolic diseases.
Chin Med J (Engl). 1999 Feb; 112(2):149-52.CM

Abstract

OBJECTIVE

To evaluate the type I collagen cross-linked N-telopeptide (NTx) levels in human urine as an indicator of bone resorption rate in different ages, sex and in bone metabolic diseases.

METHODS

Urinary NTx was determined by immunoassay in 591 Beijing healthy subjects aged from 0 to 86 years and 379 patients with bone metabolic diseases.

RESULTS

The levels of urinary NTx were significantly higher in children than in adults (P < 0.001) and higher in boys than in girls (P < 0.01) and increased 1.4-2.2 times in postmenopausal females than in men and premenopausal women. Urine NTx had a positive linear correlation with urine HOP/Cr (r = 0.778, P < 0.01) and Ca/Cr ratio (r = 0.320, P < 0.01), and a negative linear correlation with age (r = -0.523, P < 0.01) and lumbar spine BMD (r = -0.426, P < 0.01). The levels of urine NTx increased for 3.6 times in pregnancy, 1.5 times in osteoporosis, 1.9 times in fragility fracture, 3.6 times in chronic renal failure, 2.1 times in rickets and 7.2 times in multiple myeloma compared to age matched controls.

CONCLUSIONS

NTx in urine is a specific and sensitive indicator of bone resorption and is able to distinguish normal premenopause from late osteoporotic patients. NTx could be used as diagnostic information about metabolic bone diseases, and to monitor antiresorptive therapy.

Authors+Show Affiliations

Department of Biochemistry, Beijing Jishuitan Hospital, Beijing 100035, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

11593583

Citation

Xue, Y, et al. "Urinary Cross-linked N-telopeptides of Type I Collagen and Bone Metabolic Diseases." Chinese Medical Journal, vol. 112, no. 2, 1999, pp. 149-52.
Xue Y, Jia W, Zhang H, et al. Urinary cross-linked N-telopeptides of type I collagen and bone metabolic diseases. Chin Med J (Engl). 1999;112(2):149-52.
Xue, Y., Jia, W., Zhang, H., Dong, J., Clemens, J. D., & Tian, X. (1999). Urinary cross-linked N-telopeptides of type I collagen and bone metabolic diseases. Chinese Medical Journal, 112(2), 149-52.
Xue Y, et al. Urinary Cross-linked N-telopeptides of Type I Collagen and Bone Metabolic Diseases. Chin Med J (Engl). 1999;112(2):149-52. PubMed PMID: 11593583.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Urinary cross-linked N-telopeptides of type I collagen and bone metabolic diseases. AU - Xue,Y, AU - Jia,W, AU - Zhang,H, AU - Dong,J, AU - Clemens,J D, AU - Tian,X, PY - 2001/10/12/pubmed PY - 2001/10/26/medline PY - 2001/10/12/entrez SP - 149 EP - 52 JF - Chinese medical journal JO - Chin Med J (Engl) VL - 112 IS - 2 N2 - OBJECTIVE: To evaluate the type I collagen cross-linked N-telopeptide (NTx) levels in human urine as an indicator of bone resorption rate in different ages, sex and in bone metabolic diseases. METHODS: Urinary NTx was determined by immunoassay in 591 Beijing healthy subjects aged from 0 to 86 years and 379 patients with bone metabolic diseases. RESULTS: The levels of urinary NTx were significantly higher in children than in adults (P < 0.001) and higher in boys than in girls (P < 0.01) and increased 1.4-2.2 times in postmenopausal females than in men and premenopausal women. Urine NTx had a positive linear correlation with urine HOP/Cr (r = 0.778, P < 0.01) and Ca/Cr ratio (r = 0.320, P < 0.01), and a negative linear correlation with age (r = -0.523, P < 0.01) and lumbar spine BMD (r = -0.426, P < 0.01). The levels of urine NTx increased for 3.6 times in pregnancy, 1.5 times in osteoporosis, 1.9 times in fragility fracture, 3.6 times in chronic renal failure, 2.1 times in rickets and 7.2 times in multiple myeloma compared to age matched controls. CONCLUSIONS: NTx in urine is a specific and sensitive indicator of bone resorption and is able to distinguish normal premenopause from late osteoporotic patients. NTx could be used as diagnostic information about metabolic bone diseases, and to monitor antiresorptive therapy. SN - 0366-6999 UR - https://www.unboundmedicine.com/medline/citation/11593583/Urinary_cross_linked_N_telopeptides_of_type_I_collagen_and_bone_metabolic_diseases_ L2 - http://www.diseaseinfosearch.org/result/4688 DB - PRIME DP - Unbound Medicine ER -