Results 91 to 100 of about 175,216 (263)

Phosphatases in alveolar bone resorption

THE JOURNAL OF THE STOMATOLOGICAL SOCIETY,JAPAN, 1972
歯を失った後の歯槽骨の吸収機構の解明は義歯の維持, 安定の点から補綴学的にも重要な命題である。硬組織とアルカリ性ホスファターゼ (ALP) の関係は今目まで主に硬組織, 特に骨形成における役割りを中心に報告され, 骨吸収との関連性を検討した報告はほとんどみられない。本研究はALPによりウシから得た歯槽骨粉末をはじめとする硬組織が溶解されるかどうか, そしてそれは確かに酵素作用であるか否かを確かめる目的で実験, 検討を行なった。歯槽骨粉末はALP添加により特異的なCa, Pの溶出増加が認められた。また温度の影響, 阻害, 賦活剤の影響, Lineweaver-Burkの解析などによりこの溶出反応が酵素反応の特性を良く示した。ALPのPhosphoprotein phosphatase作用は認められたが,
openaire   +3 more sources

Rethinking brachycephaly: Anatomical implications and health considerations in lagomorphs

The Anatomical Record, EarlyView.
Abstract Brachycephaly in domestic rabbits is increasingly perceived by welfare organizations as associated with significant health complications, particularly oral pathologies. Despite this perception, comparative anatomical research into rabbit brachycephaly is limited compared to that of dogs and cats, compelling an in‐depth examination of its ...
Helaina Cressy, Alice Nishigaki, Matthew C. Gage, Renato L. Previdelli   +3 more
wiley   +1 more source

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

The Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer, Christian Cooper, Jingmai O'Connor   +2 more
wiley   +1 more source

Osteoprotegerin deficiency attenuates strontium-mediated inhibition of osteoclastogenesis and bone resorption

, 2011
Strontium (Sr) exerts an anabolic and antiresorptive effect on bone, but the mechanism remains unknown. Osteoprotegerin (OPG) expressed by osteoblasts plays an important role in regulating bone homeostasis by inhibiting osteoclastogenesis and bone ...
Zhaoyang Li, Zhou, G, Keith DK Luk, Lu, WW, X Sherry Liu, X Edward Guo, Liu, XS, Guo, XE, Li, Z, Songlin Peng, Guangqian Zhou, Peng, S, Luk, KDK, W William Lu   +13 more
core   +1 more source

Cortical bone distribution in the human mandibular symphysis: Ontogenic and morphometric approaches in archeological context

The Anatomical Record, EarlyView.
Abstract The human mandibular symphysis concentrates multiaxial loads during function and remodels throughout growth, but the precise mechanisms underlying cortical bone shape during growth remain relatively unexplored. Approaches based solely on thickness or external cortical contours provide only partial insights and do not capture the functional ...
Ana Ribeiro, Elsa Garot, Christine Couture, Pierre‐Hadrien Decaup   +3 more
wiley   +1 more source

The effect of chronic exercise on a biomarker of bone resorption in healthy adults

, 2019
Background. Long-term exercise contributes to the inhibition of osteoblast cell activity and to the decrease of bone resorption. Objectives. The research objective was to analyze the chronic effect of regular, long-term physical activity and physical ...
Safrizal Rahman, Yusni Yusni, Rahman, Safrizal, Yusni, Yusni   +3 more
core   +1 more source

Differences in predominant collagen fiber orientation between dorsal and plantar trabecular bone tracts of adult mule deer calcanei suggest strain‐mode‐specific adaptation

The Anatomical Record, EarlyView.
Polarized microscopic images of the outer bone cortex (a and b) and deeper trabecular bone (c and d) of the deer calcaneus in thin cross‐sections. The brighter gray levels reflect more oblique‐to‐transverse collagen fibers in the compression/dorsal bone (a, c) and the darker gray levels reflect more longitudinal collagen in the tension/plantar bone (b,
John G. Skedros, John T. Cronin, Chad S. Mears, Brett W. Richards   +3 more
wiley   +1 more source

Endogenous mediators of growth

, 1990
In the present review it is not possible to discuss the effects of the numerous endogenous mediators of growth. What we have attempted to do is to indicate the areas of controversy and the need for further research. In our view, four main questions arise.
Farquharson, C, Loveridge, N, Farquharson, C; id_orcid, Scheven, B A   +3 more
core  

Evidence for the coupling of bone formation to bone resorption in vitro

, 1980
An in vitro organ culture system of embryonic chick tibiae was used to examine bone formation and bone resorption under conditions of stimulation with 10 −12 M parathyroid extract. The bones were cultured in a serum-free medium to alleviate any potential
Baylink, D.J, Bottemiller, B.L, Howard, G.A   +2 more
core   +1 more source

Paleopathology of a putative colossosaurian caudal vertebra (Neosauropoda: Titanosauria) from the Presidente Prudente Formation, Brazil

The Anatomical Record, EarlyView.
Abstract Studies investigating paleopathologies in sauropods remain scarce despite their relative abundance in the fossil record. In this study we report new occurrence of paleopathological features, corresponding to a neoplasm found in a middle caudal vertebra (MCT.R.2120) of an advanced titanosaur from the Presidente Prudente Formation (Bauru Basin ...
Maria Luiza Peres Bertolossi, Kamila L. N. Bandeira, Roberta Veronese do Amaral, Arthur S. Brum, Rafael C. da Silva, Valéria Gallo   +5 more
wiley   +1 more source