title: Biochemical markers of bone metabolism in children with Helicobacter pylori infection.
abstract: We investigated the biochemical markers of bone metabolism in children with Helicobacter pylori infection. Biochemical markers of bone metabolism and serum levels of vitamin B12, ferritin and estradiol were measured in 41 H. pylori-positive (+) children (23 girls, 18 boys; aged 11.8+/-3 years). Serum levels of intact parathyroid hormone, ss-collagen I carboxy terminal telopeptide, total alkaline phosphatase (ALP), bone-specific ALP, N-terminal cross-links of human procollagen type I, N-mid-osteocalcin, calcium, phosphate, ferritin, and estradiol did not differ significantly between H. pylori(+) and H. pylori negative (-) children. Vitamin B12 levels were significantly decreased in H. pylori(+) compared to H. pylori(-) children. H. pylori infection was not accompanied by significant changes in markers of bone metabolism in children, although vitamin B12 levels were decreased. Further studies are required to clarify whether H. pylori infection causes time-dependent changes in bone turnover markers during the long course of this inflammatory disease.
authors.affiliation: Central Laboratory, Clinical Biochemistry Unit, Akdeniz University, Medical Faculty, 07070 Antalya, Turkey. ozdem@akdeniz.edu.tr
authors.forename: Sebahat
authors.initials: S
authors.lastname: Ozdem
authors.forename: Mustafa
authors.initials: M
authors.lastname: Akcam
authors.forename: Aygen
authors.initials: A
authors.lastname: Yilmaz
authors.forename: Meral
authors.initials: M
authors.lastname: Gultekin
authors.forename: Reha
authors.initials: R
authors.lastname: Artan
mesh_terms: D000293:Adolescent; D015415:Biomarkers / Q000097:blood; D016723:Bone Remodeling; D001842:Bone and Bones / Q000378:metabolism*; D002648:Child; D002675:Child, Preschool; D024042:Collagen Type I / Q000097:blood; D004958:Estradiol / Q000097:blood; D005260:Female; D005293:Ferritins / Q000097:blood; D005756:Gastritis / Q000378:metabolism / Q000382:microbiology; D016481:Helicobacter Infections / Q000378:metabolism*; D016480:Helicobacter pylori; D006801:Humans; D008297:Male; D010281:Parathyroid Hormone / Q000097:blood; D010455:Peptides / Q000097:blood; D014805:Vitamin B 12 / Q000097:blood
chemical_list: D015415:Biomarkers; D024042:Collagen Type I; D010281:Parathyroid Hormone; D010455:Peptides; C052929:collagen type I trimeric cross-linked peptide; D004958:Estradiol; D005293:Ferritins; D014805:Vitamin B 12