Correlated physiochemical and age changes in embryonic bovine enamel.

Abstract:

:Whole enamel scrapings from unerupted teeth of embryonic calves have been separated into fractions of varying density by stepwise centrifugation in bromoform-toluene mixtures of increasing specific gravity. Partition of enamel in this manner yields individual fractions of increasing mineral phase age and maturation. Whole scrapings and isolated fractions of the fetal bovine enamel were examined by X-ray powder diffraction, scanning electron microscopy, and atomic absorption and infrared spectroscopy to determine time-related changes in the physiochemical nature of the constituent mineral phase particles. These analyses showed poorly crystalline hydroxyapatite (HA) as the only detectable solid phase of calcium phosphate present in all fractions, its degree of crystallinity increasing with increasing density. Molar Ca/P ratios and magnesium content were highest in lowest density fractions. Carbonate vibration bands at 875 and 1420-1450 cm-1, common to mineralized tissue, were observed in intermediate and higher density fractions and in whole unfractionated enamel. Another carbonate band at approximately 705 cm-1, unusual to vertebrate calcified tissue, was detected in low density fractions and disappeared rapidly with increasing enamel maturation. Its precise relation with the enamel mineral phase has not been determined.

journal_name

Calcif Tissue Int

authors

Landis WJ,Navarro M

doi

10.1007/BF02405006

subject

Has Abstract

pub_date

1983-01-01 00:00:00

pages

48-55

issue

1

eissn

0171-967X

issn

1432-0827

journal_volume

35

pub_type

杂志文章
  • Purification and immunochemistry of a soluble matrix protein of the chicken eggshell (ovocleidin 17).

    abstract::The protein components of biomineralized structures (matrix proteins) are believed to modulate crystal nucleation and growth, and thereby influence the shape and strength of the final structure. The chicken eggshell contains a complex array of distinct matrix proteins. The most abundant of these was purified to homoge...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF00298593

    authors: Hincke MT,Tsang CP,Courtney M,Hill V,Narbaitz R

    更新日期:1995-06-01 00:00:00

  • In vitro and in vivo effects of ipriflavone on bone formation and bone biomechanics.

    abstract::Ipriflavone (i.p.) positively affects bone density in postmenopausal osteoporosis, primarily by inhibiting bone resorption. Using in vitro models of human osteoblast differentiation, we have observed that i.p. and some of its metabolites stimulate the expression of bone sialoprotein, decorin, and type I collagen, and ...

    journal_title:Calcified tissue international

    pub_type: 杂志文章,评审

    doi:10.1007/s002239900378

    authors: Civitelli R

    更新日期:1997-01-01 00:00:00

  • Anxiolytics and sedatives and risk of fractures: effects of half-life.

    abstract::To study the risk of fractures associated with anxiolytics, sedatives, and hypnotics, we conducted a case-control study. Cases were all subjects with any fracture during the year 2000 (n = 124,655). For each case, three controls (n = 373,962) matched on age and gender were randomly drawn from the background population...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-007-9095-0

    authors: Vestergaard P,Rejnmark L,Mosekilde L

    更新日期:2008-01-01 00:00:00

  • Palangeal quantitative ultrasound, phalangeal morphometric variables, and vertebral fracture discrimination.

    abstract::The aim of this study was to evaluate the association among phalangeal morphometric parameters, amplitude-dependent speed of sound (AD-SOS), ultrasound bone profile index (UBPI), and spinal bone mineral density (BMD) and fracture status. One hundred women (controls, mean age 53 +/- 12 years) and 40 osteoporotic women ...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-001-1092-0

    authors: Guglielmi G,Njeh CF,de Terlizzi F,De Serio DA,Scillitani A,Cammisa M,Fan B,Lu Y,Genant HK

    更新日期:2003-04-01 00:00:00

  • Precision of dual X-ray absorptiometry and peripheral computed tomography using mobile densitometry units.

    abstract::Irrespective of the method used for noninvasive bone mass determination, data comparison between different centers is a major problem as significant interunit variation may occur. We, therefore, have employed mobile densitometry units to reduce interunit variability in two large epidemiologic studies in Germany. Two c...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF00301682

    authors: Wapniarz M,Lehmann R,Randerath O,Baedeker S,John W,Klein K,Allolio B

    更新日期:1994-03-01 00:00:00

  • Influence of body mass index on the age-related slope of total and regional bone mineral content.

    abstract::The influence of body mass index (BMI) on T scores for total body bone mineral content (TBBMC) and regional bone mineral content (RBMC) was studied in 186 healthy women: 100 postmenopausal, 35 perimenopausal, and 51 premenopausal. The three groups were divided by BMI >25 kg/m2 and BMI <25 kg/m2 and the postmenopausal ...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s002239900310

    authors: Revilla M,Villa LF,Sánchez-Atrio A,Hernández ER,Rico H

    更新日期:1997-08-01 00:00:00

  • Expression patterns of Raf-1 suggest multiple roles in tooth development.

    abstract::Raf-1, the product of proto-oncogene c-raf-1, has key roles in the signal transduction pathways within the cell. The molecular mechanisms of tooth development in the mouse embryo are not known in detail. We examined the expression of Raf-1 during subsequent tooth development by immunohistochemical analysis. In mouse e...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF02509547

    authors: Sunohara M,Tanzawa H,Kaneko Y,Fuse A,Sato K

    更新日期:1996-01-01 00:00:00

  • Intact serum parathyroid hormone levels increase during running exercise in well-trained men.

    abstract::The purpose of this study was to examine the influence of exercise on the serum concentrations of intact parathyroid hormone (PTH). Serum PTH and plasma lactate were measured in 15 well-trained men, 9 long-distance runners and 6 fire-fighters, during two running exercises. Test one consisted of 40-minute treadmill run...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF00295947

    authors: Salvesen H,Johansson AG,Foxdal P,Wide L,Piehl-Aulin K,Ljunghall S

    更新日期:1994-04-01 00:00:00

  • Diet, bone mass, and osteocalcin: a cross-sectional study.

    abstract::To determine the relationships among nutrients intake, bone mass, and bone turnover in women we have investigated these issues in a population-based, cross-sectional, observational study in one county in central Sweden. A total of 175 women aged 28-74 at entry to the study were included. Dietary assessment was made by...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF00298425

    authors: Michaëlsson K,Holmberg L,Mallmin H,Wolk A,Bergström R,Ljunghall S

    更新日期:1995-08-01 00:00:00

  • Increased fracture risk in normocalcemic postmenopausal women with high parathyroid hormone levels: a 16-year follow-up study.

    abstract::High PTH levels increase bone turnover and decrease bone mineral density (BMD). Low plasma 25-hydroxyvitamin D (25OHD) levels cause secondary hyperparathyroidism, but the relative contribution of low 25OHD and high PTH levels on risk of fracture is largely unknown. Within the cohort of women (n = 2,016) included in th...

    journal_title:Calcified tissue international

    pub_type: 杂志文章,多中心研究

    doi:10.1007/s00223-010-9454-0

    authors: Rejnmark L,Vestergaard P,Brot C,Mosekilde L

    更新日期:2011-03-01 00:00:00

  • Effects of parathyroid hormone on urinary excretion of N-acetyl-beta-D-glucosaminidase in idiopathic hypoparathyroidism and pseudohypoparathyroidism.

    abstract::N-acetyl-beta-D-glucosaminidase (NAG) is a lysosomal enzyme predominantly located in renal proximal tubules. In idiopathic hypoparathyroidism (IHP), 100 Units of human PTH (1-34) increased urinary excretion of NAG from 0.029 +/- 0.027 to 0.173 +/- 0.035 U/lGF (p less than 0.05) in two patients before treatment and fro...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF02556010

    authors: Mizunashi K,Furukawa Y,Taguchi K,Kuwahara M,Miura R,Yumita S,Yoshinaga K

    更新日期:1989-12-01 00:00:00

  • Absolute fracture-risk prediction by a combination of calcaneal quantitative ultrasound and bone mineral density.

    abstract::Quantitative ultrasound measurement (QUS) and bone mineral density (BMD) have each been shown to predict fracture risk in women. The present study examined whether a combination of QUS and BMD could improve the predictive accuracy of fracture risk. This is a population-based prospective study which involved 454 women ...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-011-9556-3

    authors: Chan MY,Nguyen ND,Center JR,Eisman JA,Nguyen TV

    更新日期:2012-02-01 00:00:00

  • Increased Risk of Hip Fracture in Patients with Lymphoma, a Swedish Population Study of 37,236 Lymphoma Patients.

    abstract::Increased bone loss has been noted in lymphoma patients; however, the incidence of hip fracture is not known. The aim of our study was to explore the risk for hip fracture in patients with lymphoma compared with the entire Swedish population. The risk of hip fracture was determined in a retrospective population cohort...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-020-00674-7

    authors: Johansson P,Lind Kristjansdottir H,Johansson H,Jakir A,Mellström D,Lewerin C

    更新日期:2020-06-01 00:00:00

  • The essential role of fetuin in the serum-induced calcification of collagen.

    abstract::The mineral in bone is located primarily within the collagen fibril, and during mineralization the fibril is formed first and then water within the fibril is replaced with mineral. Our goal is to understand the mechanism of fibril mineralization, and as a first step we recently determined the size exclusion characteri...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-007-9085-2

    authors: Toroian D,Price PA

    更新日期:2008-02-01 00:00:00

  • Local delivery of recombinant osteoprotegerin enhances postorthodontic tooth stability.

    abstract::Relapse after orthodontic tooth movement is a significant problem in orthodontics. The purpose of this study was to examine the efficacy of the osteoclast inhibitor osteoprotegerin-Fc (OPG-Fc) for inhibiting postorthodontic relapse. Rat maxillary molars were moved mesially and allowed to relapse for 24 days. Low-dose ...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-012-9579-4

    authors: Hudson JB,Hatch N,Hayami T,Shin JM,Stolina M,Kostenuik PJ,Kapila S

    更新日期:2012-04-01 00:00:00

  • Effect of a hypergravity environment on cortical bone elasticity in rats.

    abstract::There is considerable interest in determining whether hypergravity can be used as a countermeasure for microgravity-induced bone loss. This study was conducted on 20 immature male rats in order to investigate possible elastic adaptations of cortical bone in rapidly growing rats exposed to chronic hypergravity. Ten rat...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s002239900111

    authors: Kohles SS,Bowers JR,Vailas AC,Vanderby R Jr

    更新日期:1996-09-01 00:00:00

  • Effect of physical activity during teenage years, based on type of sport and duration of exercise, on bone mineral density of young, premenopausal Japanese women.

    abstract::In this cross-sectional study, 91 healthy premenopausal women aged 20-39 years were investigated to determine the effect of physical activities during their teenage years on their current bone mineral densities (BMD). We measured whole-body BMD (WBMD), lumbar BMD (LBMD), and radial BMD (RBMD) with dual energy X-ray ab...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF02684999

    authors: Hara S,Yanagi H,Amagai H,Endoh K,Tsuchiya S,Tomura S

    更新日期:2001-01-01 00:00:00

  • Incident Fracture Risk in Type 2 Diabetic Postmenopausal Women in Mainland China: Peking Vertebral Fracture Study.

    abstract::Using data from the Peking Vertebral Fracture Study, we conducted a longitudinal cohort study to investigate the association between type 2 diabetes mellitus (T2DM) and the risk of incident fractures, especially of vertebral fractures (VFs), and we also examined the modifying effect of body mass index (BMI) on this as...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-019-00598-x

    authors: Jiajue R,Qi X,Jiang Y,Wang Q,Wang W,Pei Y,Wang X,Huang W,Zheng X,Ning Z,Wang O,Li M,Xing X,Yu W,Xu L,Xia W

    更新日期:2019-11-01 00:00:00

  • Ultrastructural study of apatite precipitation in implanted calcium phosphate ceramic: influence of the implantation site.

    abstract::Macroporous biphasic calcium phosphate (MBCP) blocks were implanted into rabbit trabecular bone and muscle, recovered 18 weeks later, and then observed and analyzed by transmission electron microscopy (TEM), electron diffraction, and electron microprobes. The results showed that (1) apatitic microcrystals appeared by ...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/pl00005825

    authors: Rohanizadeh R,Trécant-Viana M,Daculsi G

    更新日期:1999-05-01 00:00:00

  • A critical review of bone mass and the risk of fractures in osteoporosis.

    abstract::The usefulness of various bone mineral measurement techniques is a subject of current controversy. In order to explore whether disparate conclusions may have arisen from differences in analytic methodology, data from published reports of bone mass and nonviolent fractures have been reanalyzed in terms of fracture risk...

    journal_title:Calcified tissue international

    pub_type: 杂志文章,meta分析

    doi:10.1007/BF02555036

    authors: Ross PD,Davis JW,Vogel JM,Wasnich RD

    更新日期:1990-03-01 00:00:00

  • Treatment Effects of Bisphosphonates and Denosumab on Survival and Refracture from Real-World Data of Hip-Fractured Patients.

    abstract::We examined differences in patients' survival after hip fracture (HF) and risk for subsequent HF among patients treated with oral and intravenous bisphosphonates (oBPs, iBPs), denosumab (DMAB), and patients without therapy. We used data from all patients in Austria aged ≥ 50 who sustained a HF between 2012 and 2017 an...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-019-00611-3

    authors: Behanova M,Reichardt B,Stamm TA,Zwerina J,Klaushofer K,Kocijan R

    更新日期:2019-12-01 00:00:00

  • The hypotensive actions of osteogenic and nonosteogenic parathyroid hormone fragments.

    abstract::Parathyroid hormone (PTH), hPTH-(1-84), and its hPTH-(1-34), hPTH-(1-31)NH2, and hPTH-(1-30)NH2 fragments reduced the tail artery pressure in anesthetized female Sprague-Dawley rats by 42.4-67.1% within about 1 minute after injection into a femoral vein, but reduced the pressure by only 8.5-36.2% 2-19 minutes after su...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s002239900233

    authors: Whitfield JF,Morley P,Ross V,Preston E,Soska M,Barbier JR,Isaacs RJ,Maclean S,Ohannessian-Barry L,Willick GE

    更新日期:1997-03-01 00:00:00

  • Evaluation of partially demineralized osteoporotic cancellous bone matrix combined with human bone marrow stromal cells for tissue engineering: an in vitro and in vivo study.

    abstract::Allogenous demineralized bone matrix (DBM) represents a potential scaffold for bone tissue engineering due to its close relation in structure and function with autologous bone, but its supply is often restricted by donor availability. Thus, an expanded source of human bone is needed. The aim of this study was to evalu...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-008-9159-9

    authors: Liu G,Sun J,Li Y,Zhou H,Cui L,Liu W,Cao Y

    更新日期:2008-09-01 00:00:00

  • Absence of linkage for bone mineral density to chromosome 12q12-14 in the region of the vitamin D receptor gene.

    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

    authors: Zee RY,Myers RH,Hannan MT,Wilson PW,Ordovas JM,Schaefer EJ,Lindpaintner K,Kiel DP

    更新日期:2000-12-01 00:00:00

  • Determination of histamine and polyamines in calcified tissues of mice: contribution of mast cells and histidine decarboxylase to the amount of histamine in the bone.

    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

    authors: Endo Y,Kikuchi T,Nakamura M,Shinoda H

    更新日期:1992-07-01 00:00:00

  • Immunohistochemical localization of alpha 2HS glycoprotein in dentin.

    abstract::Monoclonal antibody against bovine serum alpha 2HS glycoprotein was raised in mice and the localization of this glycoprotein in bovine and human teeth was examined by immunohistochemical techniques on undemineralized ground sections after surface etching with dilute HCl. Positive reactions were found in both bovine an...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF02555864

    authors: Takagi Y,Shimokawa H,Suzuki M,Nagai H,Sasaki S

    更新日期:1990-07-01 00:00:00

  • Beneficial effects of tocotrienol and tocopherol on bone histomorphometric parameters in sprague-dawley male rats after nicotine cessation.

    abstract::This study was conducted to determine the effectiveness of three forms of vitamin E supplements following nicotine treatment on bone histomorphometric parameters in an adult male rat model. Rats were divided into seven groups: baseline (B, killed without treatment), control (C, normal saline for 4 months), nicotine (N...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/s00223-008-9190-x

    authors: Hermizi H,Faizah O,Ima-Nirwana S,Ahmad Nazrun S,Norazlina M

    更新日期:2009-01-01 00:00:00

  • TGF-beta/extracellular matrix interactions in dentin matrix: a role in regulating sequestration and protection of bioactivity.

    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

    authors: Baker SM,Sugars RV,Wendel M,Smith AJ,Waddington RJ,Cooper PR,Sloan AJ

    更新日期:2009-07-01 00:00:00

  • Old and New Drugs for the Management of Bone Disorders in CKD.

    abstract::Disturbances in mineral and bone metabolism are common in patients with chronic kidney disease (CKD), especially those undergoing dialysis. Renal osteodystrophy, which describes an alteration of bone morphology, is an important component of this systemic disorder and may explain the elevated risk of fracture which adv...

    journal_title:Calcified tissue international

    pub_type: 杂志文章,评审

    doi:10.1007/s00223-020-00788-y

    authors: Komaba H,Ketteler M,Cunningham J,Fukagawa M

    更新日期:2021-01-02 00:00:00

  • In Vitro andIn Vivo induction of bone formation using a recombinant adenoviral vector carrying the human BMP-2 gene.

    abstract::It has been well established that bone morphogenetic protein-2 (BMP-2) can induce bone formation bothin vivo andin vitro, although high concentrations (up to milligrams) of BMP-2 have been required to achieve this effectin vivo. Further, clinical applications are usually limited to a single dose at the time of implant...

    journal_title:Calcified tissue international

    pub_type: 杂志文章

    doi:10.1007/BF02678146

    authors: Cheng SL,Lou J,Wright NM,Lai CF,Avioli LV,Riew KD

    更新日期:2001-02-01 00:00:00