The osteoclast(OC) is a multinuclear bone-resorbing cell which shares several characterastic with cells of the mononuclear phagocyte system(MNPs). The cytoskeleton of OC consist of microtubes and .dricrofilaments, inc...The osteoclast(OC) is a multinuclear bone-resorbing cell which shares several characterastic with cells of the mononuclear phagocyte system(MNPs). The cytoskeleton of OC consist of microtubes and .dricrofilaments, including F -actin, podosome, talin, vinculin. they play an important role in adhesion, movement and sealing zone formation of OC. It was known that calcium, estrogen and calcitonin receptors exist in OC membrance, and matalloproteinases, c-src, c- fos gene effect on OC. Osteoblasts also produce macrophage growth factor, neutral collagenase,IL - 6, PGE2, which regulate precursors differentiation and therefore bone resorption (osteolysis)展开更多
二甲双胍是一种传统的口服降糖药,临床上普遍用于2型糖尿病的治疗。近年来大量流行病学研究报道二甲双胍能够降低2型糖尿病患者的肿瘤发病率,亦有研究发现二甲双胍能在代谢途径、细胞周期、氧化应激、肿瘤干细胞转化等方面通过激活腺苷...二甲双胍是一种传统的口服降糖药,临床上普遍用于2型糖尿病的治疗。近年来大量流行病学研究报道二甲双胍能够降低2型糖尿病患者的肿瘤发病率,亦有研究发现二甲双胍能在代谢途径、细胞周期、氧化应激、肿瘤干细胞转化等方面通过激活腺苷酸活化蛋白激酶(adenosin emonophosphate-activated protein kinase,AMPK)信号通路,从而抑制肿瘤细胞的生长、增殖以及转化。但二甲双胍通过激活AMPK的抗肿瘤机制仍存在着争议,其确切的作用机制有待进一步深入的研究,同时亟需大规模的临床试验来证实。展开更多
Osteoclast (OC) are bone resorbing cells whose development and activity are under the influence of osteoblast (OB). The potential association between those two cell lineages is an area of significant interest. It was ...Osteoclast (OC) are bone resorbing cells whose development and activity are under the influence of osteoblast (OB). The potential association between those two cell lineages is an area of significant interest. It was not until 1998 that osteoclast differentiation factor (ODF) and osteoprotegerin (OPG) was cloned. The two novel TNF superfamily members have been recently demonstrate to be the key extracellular regulators of osteoclasteogenesis and bone resorption both in vivo and in vitro, and they play important roles in osteoporosis development, diagnosis and treatment.展开更多
文摘The osteoclast(OC) is a multinuclear bone-resorbing cell which shares several characterastic with cells of the mononuclear phagocyte system(MNPs). The cytoskeleton of OC consist of microtubes and .dricrofilaments, including F -actin, podosome, talin, vinculin. they play an important role in adhesion, movement and sealing zone formation of OC. It was known that calcium, estrogen and calcitonin receptors exist in OC membrance, and matalloproteinases, c-src, c- fos gene effect on OC. Osteoblasts also produce macrophage growth factor, neutral collagenase,IL - 6, PGE2, which regulate precursors differentiation and therefore bone resorption (osteolysis)
文摘二甲双胍是一种传统的口服降糖药,临床上普遍用于2型糖尿病的治疗。近年来大量流行病学研究报道二甲双胍能够降低2型糖尿病患者的肿瘤发病率,亦有研究发现二甲双胍能在代谢途径、细胞周期、氧化应激、肿瘤干细胞转化等方面通过激活腺苷酸活化蛋白激酶(adenosin emonophosphate-activated protein kinase,AMPK)信号通路,从而抑制肿瘤细胞的生长、增殖以及转化。但二甲双胍通过激活AMPK的抗肿瘤机制仍存在着争议,其确切的作用机制有待进一步深入的研究,同时亟需大规模的临床试验来证实。
文摘Osteoclast (OC) are bone resorbing cells whose development and activity are under the influence of osteoblast (OB). The potential association between those two cell lineages is an area of significant interest. It was not until 1998 that osteoclast differentiation factor (ODF) and osteoprotegerin (OPG) was cloned. The two novel TNF superfamily members have been recently demonstrate to be the key extracellular regulators of osteoclasteogenesis and bone resorption both in vivo and in vitro, and they play important roles in osteoporosis development, diagnosis and treatment.