osteoporosis/phosphatase

Hypophosphatasia (HPP) is a rare inherited disorder characterised by rickets and low circulating concentrations of total alkaline phosphatase (ALP) caused by mutations in ALPL. Severe HPP presents in childhood but milder forms can present in adulthood. The prevalence and clinical features of adult

Optimum use of fluoride therapy for osteoporosis requires a sensitive and convenient index of the skeletal response to fluoride. Since previous studies had shown that serum alkaline phosphatase activity (SALP) was increased in response to fluoride therapy, we examined serial measurements of SALP in

Purple acid phosphatases (PAPs) are binuclear hydrolases that catalyze the hydrolysis of phosphorylated substrates under acidic to neutral conditions. Elevated serum concentrations of PAP are observed in patients suffering from osteoporosis, identifying this enzyme as a potential target for the

Glucocorticoid-induced osteoporosis is characterized by decreased osteoblast numbers and a marked impairment of new bone formation. We found that, in vitro, dexamethasone inhibits both preosteoblast proliferation and mitogenic kinase activity in response to mitogens, and that inhibition of protein

Purple acid phosphatases are metalloenzymes found in animals, plants and fungi. They possess a binuclear metal centre to catalyse the hydrolysis of phosphate esters and anhydrides under acidic conditions. In humans, elevated purple acid phosphatases levels in sera are correlated with the progression

OBJECTIVE To study polymorphism of genes involved in mechanisms regulating metabolism of bone tissue: alkaline (ALPL) and acid (ACP1) phosphatases, vitamin D-binding protein (GC); to ascertain associations of their genotypes and alleles with osteoporosis (OP) and mineral density of spinal and

Serum tartrate-resistant acid phosphatase (sTr-AcP) and bone mineral content (BMC) were measured in 29 women with postmenopausal osteoporosis and in 12 control women. Serum Tr-AcP was higher in osteoporotic patients than in controls and a negative linear correlation was found between sTr-AcP and BMC

BACKGROUND Tartrate-resistant acid phosphatase isoform 5b (TRACP5b) is a serum bone resorption marker. Our aim was to investigate its utility in monitoring metabolic bone disease. METHODS Serum TRACP5b, C-terminal cross-linking telopeptide of type I collagen, urine N-terminal cross-linking

The objectives of this study were to: (i) evaluate the diagnostic sensitivity and specificity of the biochemical bone markers: serum total alkaline phosphatase (TALP), bone specific alkaline phosphatase (BSALP) and urinary deoxypyridinoline (Dpyr) in postmenopausal osteoporosis, (ii) compare the

We have evaluated two commercial assays for serum bone specific alkaline phosphatase (bALP) as a marker of bone turnover in a group of 35 postmenopausal women with osteoporosis during their first year of treatment with the anti-resorptive drug, alendronate. The immunoradiometric assay (bALP-I)

OBJECTIVE C-telopeptide crosslaps (CTX) and bone-specific alkaline phosphatase (BAP) do not provide sufficient sensitivity and specificity for diagnosis of osteoporosis. Cathepsin K (CatK), osteoprotegerin (OPG), and receptor activator of nuclear factor κB ligand (total (t) and soluble (s) RANKL)

The relationship between bone formation markers osteocalcin (OC) and bone-specific alkaline phosphatase (bALP) and age in postmenopausal women was investigated. Forty-eight osteoporotic women (median age 62, range 49-76 years) were enrolled in the study. There were 17 (35%) patients aged 49-59 years

OBJECTIVE To evaluate the application of bone turnover markers bone alkaline phosphatase (BALP) and N-MID osteocalcin (N-MID) in monitoring of osteoporosis treatment with recombined parathyroid hormone 1-34 (rhPTH1-34). METHODS The bone mineral density (BMD) of the lumbar spine L2-L4 and the

Purple acid phosphatases (PAPs) are metalloenzymes that catalyse the hydrolysis of phosphate esters under acidic conditions. Their active site contains a Fe(III)Fe(II) metal centre in mammals and a Fe(III)Zn(II) or Fe(III)Mn(II) metal centre in plants. In humans, elevated PAP levels in serum

The aim of this study was to evaluate the activity of alkaline (ALP) and acid (ACP) phosphatase in the blood serum of rats after ovariectomy and with estrogen replacement therapy. The relationship between mandible and spine bone mineral density (BMD) and parameters of bone remodeling was also