title: Serum bone Gla protein in streak gonad syndrome.
abstract: Osteoporosis is one of the most common complications of streak gonad syndrome (SGS), however its pathogenesis is still unclear. Bone Gla protein (BGP) has been found to be a serum marker of bone turnover in various metabolic disease states. In the present study serum BGP and alkaline phosphatase (AP) were measured in 13 osteoporotic patients with SGS and in 56 healthy women. Mean (+/- SD) serum BGP levels were normal (7.5 +/- 2.0 ng/ml) in seven patients who had been on estrogen-progestin replacement therapy and became significantly elevated (P less than 0.001) 2 and 3 months after discontinuation of the treatment (15.3 +/- 2.3 and 13.2 +/- 1.0 ng/ml, respectively). Mean (+/- SD) serum AP (207 +/- 65 U/l) showed significant increases (P less than 0.05) 2 months after withdrawal of hormonal substitution (287 +/- 74 U/l). Mean (+/- SD) serum BGP (15.4 +/- 3.5) and AP (287 +/- 49) levels were significantly higher (P less than 0.001 and less than 0.05, respectively) in six patients with SGS who had not been on hormonal substitution. These findings are consistent with those obtained in postmenopausal women suffering from "high remodelling osteoporosis" and suggest that bone turnover in osteoporotic patients with SGS is increased and the skeletal loss is a consequence of accelerated bone loss rather than decreased bone formation.
authors.affiliation: First Department of Medicine, Semmelweis University Medical School, Budapest, Hungary.
authors.forename: J
authors.initials: J
authors.lastname: Zséli
authors.forename: P
authors.initials: P
authors.lastname: Bösze
authors.forename: P
authors.initials: P
authors.lastname: Lakatos
authors.forename: P
authors.initials: P
authors.lastname: Vargha
authors.forename: G
authors.initials: G
authors.lastname: Tarján
authors.forename: E
authors.initials: E
authors.lastname: Kollin
authors.forename: C
authors.initials: C
authors.lastname: Horváth
authors.forename: J
authors.initials: J
authors.lastname: László
authors.forename: I
authors.initials: I
authors.lastname: Holló
mesh_terms: D000328:Adult; D000469:Alkaline Phosphatase / Q000097:blood; D001842:Bone and Bones / Q000378:metabolism; D002118:Calcium / Q000097:blood; D004967:Estrogens / Q000494:pharmacology; D005260:Female; D005269:Femur / Q000737:chemistry / Q000378:metabolism; D006059:Gonadal Dysgenesis / Q000097:blood*; D006801:Humans; D008159:Lumbar Vertebrae / Q000737:chemistry / Q000378:metabolism; D008875:Middle Aged; D008903:Minerals / Q000032:analysis / Q000378:metabolism; D015675:Osteocalcin / Q000097:blood*; D010024:Osteoporosis / Q000097:blood; D010758:Phosphorus / Q000097:blood; D011372:Progestins / Q000494:pharmacology; D011884:Radius / Q000737:chemistry / Q000378:metabolism; D013577:Syndrome
chemical_list: D004967:Estrogens; D008903:Minerals; D011372:Progestins; D015675:Osteocalcin; D010758:Phosphorus; D000469:Alkaline Phosphatase; D002118:Calcium