Results: 450

β-ARRESTIN/CONNEXIN 43 (Cx43) complex anchors ERKS outside the nucleus: a prerequisite for bisphosphonate antiapoptotic effect mediated by Cx43/ERK in osteocytes

Actual. osteol; 12 (1), 2016
Bisphosphonates (BPs) anti-fracture efficacy may be due in part to inhibition of osteocyte apoptosis. This effect requires opening of connexin (Cx) 43 hemichannels and phosphorylation of the extracellular signal regulated kinases (ERKs). However, unlike ERK activation by other stimuli, the Cx43/ERK pathw...

Biomecánica de las fracturas por stress
Biomechanical features of stress fractures

Actual. osteol; 12 (1), 2016
Se define como estrés (stress) tanto la fuerza que una carga externa ejerce sobre un cuerpo sólido como la fuerza reactiva que acompaña a la primera (Ley de Newton), por unidad de área imaginaria transversal a su dirección. Las cargas internas reactivas inducen deformaciones proporcionales del cuerp...

Aspectos clínicos de las fracturas por stress
Clinical features of stress fractures

Actual. osteol; 12 (1), 2016
Las fracturas de stress son el resultado de la reiteración de cargas mecánicas en ciclos de intensidad, duración y frecuencia variables que, aplicadas como estímulos únicos, no serían suficientes para provocarlas. En líneas generales, el mecanismo propuesto para la generación de las fracturas de ...

Raloxifene neutralizes bone brittleness induced by anti-remodeling treatment and increases fatigue life through non-cell mediated mechanisms

Actual. osteol; 12 (3), 2016
Pre-clinical data have shown that tissue level effects stemming from bisphosphonateinduced suppression of bone remodeling can result in bone that is stronger yet more brittle. Raloxifene has been shown to reduce bone brittleness through non-cellular mechanisms. The goal of this work was to test the hypot...

Efecto de la yerba mate (ilex paraguariensis) sobre el hueso de ratas ovariectomizadas
Effect of yerba mate (ilex paraguariensis) on bone in ovariectomized rats

Actual. osteol; 12 (3), 2016
El consumo de yerba mate (Ilex paraguariensis) es habitual en la Argentina y otros países de América del Sur. La yerba mate, al igual que el café y el té, contiene xantinas y polifenoles. El consumo de café ha mostrado tener impacto negativo sobre la densidad mineral ósea (DMO), mientras que el té...

Utilização de RHBMP-2 em reconstrução de maxila: relato de caso clínico

Periodontia; 26 (3), 2016
Os enxertos ósseos utilizados em reconstruções são chamados de autógenos quando são retirados da própria pessoa que recebe o implante. Os enxertos autógenos ainda são utilizados pela maioria dos cirurgiões na Odontologia, mas sabe-se que essa opção apresenta algumas desvantagens, como necessi...

Effect of raloxifene on alveolar bone resorption after mucoperiosteal fl ap surgery in mice

Stomatos; 21 (41), 2015
Background: Mucoperiosteal fl ap surgeries (MFS) are carried out to provide access to the alveolar bone and root surfaces in several clinical situations. Nevertheless, they lead to a variable degree of alveolar bone resorption. Raloxifene is an agonist in bone, and acts inhibiting bone loss. Objective: T...

Fisiopatologia da osteoporose: uma revisão bibliográfica

Femina; 43 (6), 2015
O envelhecimento do esqueleto está associado a fatores intrínsecos e extrínsecos. Foi realizada uma pesquisa nas bases de dados e os artigos considerados de interesse foram aqueles publicados nos últimos 10 anos. O objetivo deste estudo é compreender a natureza das alterações morfológicas do osso...

New insights on diabetes and bone metabolism

J. bras. nefrol; 37 (4), 2015
Diabetes mellitus is a common chronic metabolic disease worldwide whose prevalence has increased during the last decades. Besides its more commonly recognized complications, such as macrovascular disease, retinopathy, nephropathy and neuropathy, diabetes related bone disease has gained growing attention....

Miniplates and mini-implants: bone remodeling as their biological foundation

Abstract The tridimensional network formed by osteocytes controls bone design by coordinating cell activity on trabecular and cortical bone surfaces, especially osteoblasts and clasts. Miniplates and mini-implants provide anchorage, allowing all other orthodontic and orthopedic components, albeit afar, t...