Abstract：
:Forty 5-week-old rats were randomly divided into 1 control group given a normal diet and water low in fluoride (0.026 mM/1) and experimental group receiving the same basic diet and a fluoride supplement of 2.6 mMol/l in the drinking water. After 30 weeks, half of the fluoride-supplemented and half of the nonsupplemented animals were given a calcium-deficient diet for another 16 weeks. Parathyroid activity was estimated by determinations of serum levels of parathyroid hormone and by light microscopic, morphometric evaluation of randomized sections of the parathyroid glands. Serum iPTH and parathyroid nuclear size were significantly increased in the calcium-deficient animals without any fluoride supplement. Fluoride administration to animals on a normal diet did not cause any increase in the serum iPTH levels or in the morphometric parameters for nuclear size. Calcium-deficient animals given a fluoride supplement also showed normal serum iPTH levels and normal parathyroid nuclear size. It is therefore concluded that fluoride does not induce hyperparathyroidism and, further, that fluoride seems to inhibit increased parathyroid activity caused by calcium deficiency.
journal_name
Calcif Tissue Intjournal_title
Calcified tissue internationalauthors
Rosenquist JB,Lorentzon PR,Boquist LLdoi
10.1007/BF02405089subject
Has Abstractpub_date
1983-07-01 00:00:00pages
533-7issue
4-5eissn
0171-967Xissn
1432-0827journal_volume
35pub_type
杂志文章abstract：:Several rare inherited disorders have been described that show phenotypic overlap with Paget's disease of bone (PDB) and in which PDB is a component of a multisystem disorder affecting muscle and the central nervous system. These conditions are the subject of this review article. Insertion mutations within exon 1 of t...
journal_title：Calcified tissue international
pub_type： 杂志文章,评审
doi：10.1007/s00223-019-00520-5
更新日期：2019-05-01 00:00:00
abstract：:Fourier-transform (FT) Raman spectroscopy was used to characterize the organic and mineral components of biological and synthetic calcium phosphate minerals. Raman spectroscopy provides information on biological minerals that is complimentary to more widely used infrared methodologies as some infrared-inactive vibrati...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF00305529
更新日期：1994-05-01 00:00:00
abstract：:It is our hypothesis that interstitial fluid flow plays a role in the bone remodeling response to mechanical loading. The fluid flow-induced expression of three proteins (collagen, osteopontin, and alkaline phosphatase) involved in bone remodeling was investigated. Rat calvarial osteoblasts subjected to pulsatile flui...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s002239900185
更新日期：1997-01-01 00:00:00
abstract：:To assess whether vertebral fractures are associated with osteopenia in chronic alcoholic patients, a transversal study was carried out in 76 chronic alcoholic males and 62 age-matched healthy males. Lumbar bone mineral density (BMD) by dual photon absorptiometry and spinal chest X-ray films were done in all patients....
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF00298430
更新日期：1995-08-01 00:00:00
abstract：:Bone tissue is a source of growth factors; among them, insulinlike growth factor I (IGF-I) is probably an important local regulator of bone formation. This study has been carried out in order to assess the effects of natural menopause on plasma concentrations of IGF-I in the first 6 years after the cessation of gonada...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF01352006
更新日期：1993-07-01 00:00:00
abstract：:The bone mineral status of 17 girls with Turner's syndrome was evaluated by single photon absorptiometry. Bone mineral content (BMC) was 25.4% below that predicted by normalization for age, sex, height, weight, and bone width. Only 25% of this demineralization could be attributed to delayed skeletal maturation. Bones ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02411296
更新日期：1982-01-01 00:00:00
abstract：:In general, physical exercise appears to have favorable effects on the skeleton. However, a few recent reports have described negative effects, including reduced bone density (BMD) and high bone turnover in runners. The aim of our study was to compare endurance runners to controls with respect to BMD at different site...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s002239900366
更新日期：1997-12-01 00:00:00
abstract：:The developing mandibular condylar growth center consists of a number of histologically distinct cell types. There is an increase in cell volume that takes place from the condylar surface layer through the center of ossification, resulting in a disorganized, irregular cellular pattern. Consequently, the isolation and ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF00298747
更新日期：1995-01-01 00:00:00
abstract：:Fracture healing is a natural process that recapitulates embryonic skeletal development. In the early phase after fracture, reactive oxygen species (ROS) are produced under inflammatory and ischemic conditions due to vessel injury and soft tissue damage, leading to cell death. Usually, such damage during the course of...
journal_title：Calcified tissue international
pub_type： 杂志文章,评审
doi：10.1007/s00223-019-00576-3
更新日期：2019-10-01 00:00:00
abstract：:Sulfotransferase 1E1 (SULT1E1) catalyze estrogen into sulfate conjugation and is involved in the metabolism of phytoestrogen. A community-based cross-sectional study was conducted on 397 Korean women, to evaluate the association between genetic polymorphisms of SULT1E1 and bone mineral density (BMD) and the combined e...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-006-0008-4
更新日期：2006-09-01 00:00:00
abstract：:This study examined bone density among postmenopausal Buddhist nuns and female religious followers of Buddhism in southern Taiwan and related the measurements to subjects characteristics including age, body mass, physical activity, nutrient intake, and vegetarian practice. A total of 258 postmenopausal Taiwanese veget...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/pl00005812
更新日期：1997-03-01 00:00:00
abstract：:The orientation of nanoscale mineral platelets was quantitatively evaluated in relation to the shape of lacunae associated with partially embedded osteocytes (osteoblastic-osteocytes) on the surface of deproteinised trabecular bone of adult sheep. By scanning electron microscopy and image analysis, the mean orientatio...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-015-0072-8
更新日期：2016-02-01 00:00:00
abstract：:Changes in the acidity of osteoclasts were evaluated by direct measurement of the fluorescent intensity of osteoclasts exposed to acridine orange, a fluorescent weak base which becomes concentrated in acid-containing subcellular compartments. Parathyroid hormone (PTH) produced dose-dependent increases in fluorescent i...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02554924
更新日期：1985-12-01 00:00:00
abstract：:ELISAs for measuring the urinary excretion of collagen crosslinks and related peptides appear to show marked differences in sensitivity to anti-resorptive therapy. This presumably reflects variations in specificity of the anylate being detected in these assays, and the way in which they respond to treatment. To clarif...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s002239900148
更新日期：1996-11-01 00:00:00
abstract：:Measurement of areal bone mineral density (aBMD) in intravertebral subregions may increase the diagnostic sensitivity of dual-energy X-ray absorptiometry (DXA)-derived parameters for vertebral fragility. This study investigated whether DXA-derived bone parameters in vertebral subregions were better predictors of verte...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-014-9866-3
更新日期：2014-08-01 00:00:00
abstract：:Bruck syndrome is a rare autosomal recessive form of osteogenesis imperfecta (OI), which is mainly characterized by joint contractures and recurrent fragility fractures. Mutations in FKBP10 and PLOD2 were identified as the underlying genetic defects of Bruck syndrome. Here we investigated the phenotypes and the pathog...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-017-0360-6
更新日期：2018-03-01 00:00:00
abstract：:Vitamin K promotes the formation of gamma-carboxylated glutamate (GLA) in several protein species. GLA residues have a high affinity for the Ca ion. In the present study, we tested the hypothesis that experimental vitamin K deficiency in rats could induce changes in Ca metabolism. Vitamin K depletion, which was associ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02554833
更新日期：1985-03-01 00:00:00
abstract：:Teriparatide (TPTD) is known to increase the cortical thickness and porosity. The purpose of the present study was to determine whether switching from TPTD to ibandronate (IBN) would be useful for improving cortical bone parameters as assessed using high-resolution quantitative computed tomography (HR-QCT) analyses in...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-016-0180-0
更新日期：2016-11-01 00:00:00
abstract：:The aim of this work was to explore the reduction of fluoride concentrations in the skeleton after stopping experimental fluoride administration. Fluoride was administered to the rats at varying doses (0, 50, 100 ppm in drinking water) and for different lengths of time (4, 13, 25 weeks). A series of fluoride concentra...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF00318049
更新日期：1995-04-01 00:00:00
abstract：:Polymorphisms in the region of the gene for the vitamin D receptor (VDR) (chromosome 12q12-14) have been associated with differences in bone mineral density (BMD) in some studies but not in others. Because linkage analysis assesses allele sharing identical-by-descent among relatives instead of the association of a par...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s002230001175
更新日期：2000-12-01 00:00:00
abstract：:Age-related loss of skeletal muscle is associated with increased risk of functional limitation and cardiovascular (CV) mortality. In the elderly abdominal aortic calcification (AAC) can increase CV risk by altering aortic properties which may raise blood pressure and increase cardiac workload. This study investigated ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-016-0157-z
更新日期：2016-10-01 00:00:00
abstract：:The diphosphonates dichloromethanediphosphonate (Cl2MDP) and to a minor degree 1-hydroxyethane-1,1-diphosphonate (EDHP) increased the glycogen content in cultured cartilage cells of rabbit ear. This effect was not due to different concentrations of glucose in the medium. ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02408621
更新日期：1980-01-01 00:00:00
abstract：:Methotrexate (MTX) is one of the most commonly prescribed drugs for autoimmune rheumatic diseases. As there is no consensus on its negative effects on bone, the purpose of this investigation was to determine the clinical spectrum of patients with stress fractures due to long-term MTX treatment (i.e., MTX osteopathy). ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-020-00765-5
更新日期：2021-02-01 00:00:00
abstract：:Cortical bone can be modeled as a complex hierarchical composite interrelating both structure and material properties on four levels of structural organization: molecular, ultrastructural, microscopic, and macroscopic. In young animals, the microstructural systems are long parallel lamellar units, plexiform bone, whic...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02406131
更新日期：1984-01-01 00:00:00
abstract：:Toxicological studies have demonstrated that intermittent PTH1-34 treatment is associated with an increased incidence of osteosarcoma in Fischer 344 rats. Comet and micronucleus (MN) tests, standard methods to evaluate genotoxic potential of drugs, were used to detect DNA and chromosome breaks, respectively, after PTH...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-010-9396-6
更新日期：2010-11-01 00:00:00
abstract：:Further insight into human tooth enamel, dense fraction (TE), has been obtained by following the change and loss of CO3(2-), OH-, structurally incorporated H2O, Cl-, and, indirectly, HPO4(2-) after TE had been heated in N2 or vacuum in the range 25-1000 degrees C. Quantitative infrared spectroscopic, lattice parameter...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02407181
更新日期：1980-01-01 00:00:00
abstract：:The demonstration of histochemical characteristics in calcifying cartilage is fraught with methodological difficulties including the distinction of mineralized from unmineralized cartilage and the demonstration of cell detail in relatively hard tissue. This study uses the decalcified bone matrix-induced enchondral (en...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02555141
更新日期：1988-10-01 00:00:00
abstract：:Experimental analysis with paired femurs provides the opportunity to study within-person differences in fracture type and associated structural side differences. We hypothesized that different fracture types in the hips of a subject are associated with structural asymmetry. Bone mineral density (BMD) and structural me...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-010-9388-6
更新日期：2010-09-01 00:00:00
abstract：:We conducted a case-control study on fracture risk associated with the use of orally administered prednisolone/prednisone, budesonide, methylprednisolone, and hydrocortisone to assess if the various preparations were associated with different fracture patterns. Cases were all subjects with any fracture sustained durin...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-008-9124-7
更新日期：2008-04-01 00:00:00
abstract：:Plasma osteocalcin (BGP), growth hormone (GH), and somatomedin C(SmC) were measured in 12 patients with acromegaly [7 clinically active (aA), 5 cured (cA)] and 9 control subjects (C). Basal plasma values for the three parameters were higher in aA than in C and in cA. No significant difference was found between cA and ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02555167
更新日期：1988-07-01 00:00:00
