Abstract：
:Bone labeling, histochemical, and fine structural studies were performed in order to clarify the effects of ipriflavone (IP) on rat bone tissue in vivo and in vitro. Labeling experiments showed a slight increase in bone formation during 3 days' administration. It was also noted that many osteoclasts detached from the bone surface at 1, 2, and 6 hours after administration in vivo. In addition, irregular localization of tartrate-resistant acid phosphatase (TRACPase) activity was observed in osteoclasts. Fine structurally, IP-treated osteoclasts exhibited irregularity in their ruffled borders, as reported in calcitonin administration, and many enlarged rough endoplasmic reticuli and vacuoles were observed. However, osteoclasts at 12 hours after administration, as well as the control, indicated recovery features from the effect of IP. Osteoblast proliferation and differentiation led to increasing alkaline phosphatase activity (ALPase) with time as well as the development of rough endoplasmic reticuli and Golgi apparatus with well-developed fine structure. These findings imply active synthesis of bone matrix. In our in vitro experiment, osteoclasts and osteoblasts displayed histochemical and fine structural characteristics similar to those observed in our in vivo experiment. Moreover, fewer TRACP-positive mononuclear cells were observed after 24-hour culture with IP than with the control. These results suggest that IP inhibits directly and/or indirectly differentiation and activity of osteoclasts and also promotes differentiation of osteoblast-lineage cells and their bone-forming activity.
journal_name
Calcif Tissue Intjournal_title
Calcified tissue internationalauthors
Ozawa H,Nakamura H,Irie K,Irie Mdoi
10.1007/BF02180245subject
Has Abstractpub_date
1992-01-01 00:00:00pages
S21-6eissn
0171-967Xissn
1432-0827journal_volume
51 Suppl 1pub_type
杂志文章abstract：:Atomic force microscopy (AFM) was used to obtain three-dimensional images of isolated mineralites extracted from young postnatal bovine bone. The mean mineralite size is 9 nm x 6 nm x 2.0 nm, significantly shorter and thicker than the mineralites of mature bovine bone measured by the same technique. Mineralites of the...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-002-1077-7
更新日期：2003-05-01 00:00:00
abstract：:Risk factors for increased mortality in hip fracture patients include older age, male sex, fracture type, bone mineral density, and pre-existing co-morbidities. The role of biochemical and other anthropometric parameters on hip fracture mortality remains unclear. The aim of this study was to identify the risk factors ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-015-0070-x
更新日期：2016-01-01 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：:A simple method for determining histamine and polyamines in various tissues was devised. The method, however, could not be applied to calcified tissues, because the high concentration of Ca2+ in the extract interferes with the chromatographic separation of these amines. By treating the extracts from calcified tissues ...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF00296220
更新日期：1992-07-01 00:00:00
abstract：:Normal rat bone maturation has been studied using biochemical methods and hydrazine separation of matrix and mineral for X-ray diffraction. In the bone, the amount of mineral increases between 4 and 22 weeks of age, while in the matrix, the ratio of noncollagenous protein to collagen progressively decreases. In minera...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02407162
更新日期：1980-01-01 00:00:00
abstract：:Vascular calcification (VC), which is associated with high cardiovascular morbidity and mortality in patients with chronic kidney disease, is promoted by the osteoblastic differentiation of vascular smooth muscle cells (VSMCs). The present study explored the functional roles and molecular mechanisms of the long noncod...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-020-00696-1
更新日期：2020-07-01 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：:We have previously noted that a relatively large load (150 N) is required to induce a strain on the cortex of rat vertebrae similar to that induced on weight-bearing bones by normal mechanical usage. It seems unlikely that the musculature of the tail normally imposes loads of this magnitude, and this suggests that the...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s002239900097
更新日期：1996-08-01 00:00:00
abstract：:The effect of parathormone (PTH), lipopolysaccharide (LPS), or interleukin-1 (IL-1) on calcium release and collagen degradation in bone was examined in vitro using labeled neonatal calvaria of normal mice and also of osteopetrotic microphthalmic (mi/mi) mice that have defective osteoclasts. All three agents stimulated...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02554878
更新日期：1985-05-01 00:00:00
abstract：:The perilacunar areas of low mineral density in microradiographs from cortical bone of patients with hypophosphatemic (vitamin D-resistant) rickets are not evenly distributed throughout the bone tissue. Their frequency and distribution were determined in bone from 9 patients with this disease. It was found that the le...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02441169
更新日期：1979-04-17 00:00:00
abstract：:Recommendations from the FNIH Sarcopenia Project are that appendicular lean mass (ALM, kg) adjusted for body mass index (BMI, kg/m2) be used for identifying low lean mass, with ALM/BMI cutpoints of < 0.789 m2 for men and < 0.512 m2 for women. We report normative ALM/BMI values for Australian adults, and compare the pe...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-018-0506-1
更新日期：2019-04-01 00:00:00
abstract：:In order to determine whether the bacterial bone resorbing agents lipopolysaccharide (LPS) and muramyl dipeptide (MDP) interact with osteoblasts, their effect on the synthesis of collagenase and tissue inhibitor or metalloproteinases (TIMP) from monolayer cultures of mouse osteoblast-like cells was investigated. All c...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02556318
更新日期：1989-05-01 00:00:00
abstract：:The purpose of this study was to (1) quantify the healing process of the human osteoporotic proximal humerus fracture (PHF) expressed in terms of callus formation over the fracture region using BMD scanning, and (2) quantify the impact of medical intervention with vitamin D3 and calcium on the healing process of the h...
journal_title：Calcified tissue international
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1007/s00223-004-0167-0
更新日期：2004-09-01 00:00:00
abstract：:TGF-beta isoforms sequestrated in dentin matrix potentially provide a reservoir of bioactive molecules that may influence cell behavior in the dentin-pulp complex following tissue injury. The association of these growth factors with dentin matrix and the influence of such associations on the bioactivity of growth fact...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-009-9248-4
更新日期：2009-07-01 00:00:00
abstract：:Sclerostin and parathyroid hormones are strong negative and positive regulators of bone formation, respectively. The anabolic response induced by intermittent (iPTH) treatment is sclerostin status-dependent. However, the interaction between sclerostin and iPTH at the matrix level is unknown. The goal of the current st...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-015-0074-6
更新日期：2016-02-01 00:00:00
abstract：:The hypophosphatemic male mouse (Hyp/y), the proposed model for human vitamin D-resistant rickets (VDRR), is characterized by chronic hypophosphatemia, dwarfism, and rachitic and osteomalacic bone lesions. We have reported that treatment of Hyp/y mice with phosphate salts (Pi) heals rickets but does not correct the de...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02411227
更新日期：1982-03-01 00:00:00
abstract：:The current studies were intended to determine whether the anabolic effects of calcitonin (CT) on human osteoblast-line cells were (1) unique to osteosarcoma cells or also evident in osteoblast-line cells derived from normal human bone; and/or (2) associated with effects on several insulin-like growth factor (IGF) sys...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s002230001112
更新日期：2000-09-01 00:00:00
abstract：:Extracellular ATP, and to a lesser extent adenosine, an ATP metabolite, stimulated cell proliferation in osteoblast-like cells (MC3T3-E1). ATP increased cytosolic Ca2+ due to Ca2+ mobilization from intracellular storage in the same concentration range of the nucleotide as that effective for DNA synthesis, suggesting t...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02529732
更新日期：1996-02-01 00:00:00
abstract：:The increased uptake of bone-seeking radionuclides following a fracture has been stated to be due to an increase in bone blood flow, resulting in an increase in capillary surface area available for exchange. This paper examines the relationship between the maximum instantaneous extraction of 99mTc-MDP and blood flow i...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02405085
更新日期：1983-07-01 00:00:00
abstract：:This study examines the efficacy of using radiolabeled thymidine as a measure of bone cell DNA synthesis. The effect of a bone-active peptide on cell proliferation is assessed under different labeling conditions and it is shown that the apparent stimulation in DNA synthesis is due to an increase in participating cells...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02553298
更新日期：1986-08-01 00:00:00
abstract：:The aims of this study were to compare the response to therapy in disease activity in pagetic patients with and without skull involvement and the usefulness of bone markers in the evaluation of these patients. Forty patients with Paget's disease treated with tiludronate and 26 healthy controls were included. Serum tot...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-005-0247-9
更新日期：2006-07-01 00:00:00
abstract：:We have examined the effect of the anti-tumor compound taxol, on osteoclastic bone resorption. In the bone slice assay, taxol (0.1-0.001 microM) dose-dependently inhibited bone resorption with an IC50 of 0.08 microM. Osteoclast survival on bone slices was unaffected by 0.01-1 microM taxol, but 10 microM was cytotoxic....
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF00301951
更新日期：1995-12-01 00:00:00
abstract：:Prior exposure to PTH markedly decreased the responsiveness of isolated, cultured bone cells to the stimulatory effect of the hormone on cyclic AMP formation. This process of desensitization developed within 30 min, persisted during prolonged incubation of the cells in PTH-free medium, and could not be attributed to e...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02408528
更新日期：1980-01-01 00:00:00
abstract：:Anemia is commonly associated with osteoporosis and sarcopenia in older persons. However, there is a common subset of patients identified as osteosarcopenic at a higher risk of adverse outcomes. Whether these patients are also at a higher risk of anemia remains unknown. In this study, we aimed to compare hemoglobin (H...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-020-00706-2
更新日期：2020-08-01 00:00:00
abstract：:During endochondral ossification, proliferative activity of chondrocytes is arrested and the cells undergo terminal hypertrophic differentiation. We examined the expression of the cyclin-dependent kinase inhibitor, p21(CIP1/WAF1) in permanent cartilage (xyphoid and articular cartilage) and in cartilage undergoing endo...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s002239900323
更新日期：1997-09-01 00:00:00
abstract：:The Sarcopenia and Quality of Life questionnaire (SarQol®) is a self-administered multidimensional sarcopenia-specific tool designed for community-dwelling subjects aged 65 years and older. The purpose of the present study was to evaluate the psychometric properties of the Spanish version of the SarQoL®. A total of 25...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-019-00635-9
更新日期：2020-03-01 00:00:00
abstract：:Long-term use of hydrochlorothiazide (HCTZ), a common diuretic agent for hypertension, has been associated with increased bone density and reduced hip fracture rates in patients. In this study, we sought to examine whether HCTZ has an anabolic effect on the proliferation of human osteoblasts (derived from either verte...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF00369219
更新日期：1996-12-01 00:00:00
abstract：:We examined the osteogenesis process in transforming growth factor beta 1 (TGF-beta 1)-treated neonatal and adult rats, aiming to investigate the age difference in the effect of TGF-beta 1 on mesenchymal cell differentiation. Recombinant human (rh) TGF-beta 1 (20 and 200 ng) was injected onto the outer periostea of th...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF01321890
更新日期：1993-08-01 00:00:00
abstract：:Conventional transmission electron microscopy requires an effective dehydration of the tissue specimens under investigation. This dehydration, for which ethanol most often is used, may influence the solubility of the slightly soluble calcium phosphates. To study the behavior of calcium phosphates in ethanol, stable ne...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/BF02554840
更新日期：1985-03-01 00:00:00
abstract：:We describe here the activity of a novel selective estrogen receptor modulator, SP500263. When given to adult ovariectomized (OVX) rats for 28 days at doses of 0.3, 1, or 3 mg/kg/day, we found that SP500263 partially protected against OVX-induced loss of bone mineral content in the distal ends of femurs and in the who...
journal_title：Calcified tissue international
pub_type： 杂志文章
doi：10.1007/s00223-002-1029-2
更新日期：2003-06-01 00:00:00
