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Department of Veterinary Basic Sciences, INSERM, CNRS, Université Paris Decartes, INSERM, Department of Endocrinology, Royal Veterinary College, Royal College Street, London NW1 0TU, UK
Department of Veterinary Basic Sciences, INSERM, CNRS, Université Paris Decartes, INSERM, Department of Endocrinology, Royal Veterinary College, Royal College Street, London NW1 0TU, UK
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ovariectomised or sham operated. Tibiae were collected from these mice 6 weeks after OVX for micro-computed tomography (micro-CT) analysis. For measurement of dynamic bone formation parameters, mice in this study were i.p. injected with calcein (Sigma
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experience suggests that 4 day intervals of calcein injection would be too short to distinguish the double labeling clearly when the animal's age is over 3 months or more, as their bone formation and bone turnover rates decrease compared with that of the 1
Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, 76230 Querétaro, México
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the tissue; their death is an important feature of cartilage replacement during bone formation ( Poole 1991 ), but in aging and disease it can lead to cartilage degradation ( Aigner & McKenna 2002 ). Various lines of evidence suggest that apoptosis is
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between bone formation and resorption involves the regulation of bone cell activities by several endocrine and paracrine axes including steroid hormones ( Frenkel et al . 2010 ), adrenocorticotropic hormone (ACTH; Isales et al . 2010 ), and cytokines
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al . 1996 , Ducy 2000 ). The bone loss in age-related osteoporosis is associated with more adipogenesis and less bone formation ( Pei & Tontonoz 2004 ). Second, there are direct actions on bone of hormones produced by adipocytes, such as adiponectin
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Introduction Sclerostin is a 22 kDa secreted glycoprotein encoded by the SOST gene. It is primarily expressed by osteocytes and plays a major role in bone homeostasis, affecting bone formation and bone remodelling through its role as a
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N mbr are expressed in mouse ATDC5 chondrogenic cells, which proliferate in response to NMB ( Saito et al . 2012 ). Bone tissue is primarily made via two mechanisms. During endochondral bone formation in long bones and vertebrae, a
Department of Radiology, University of California, San Francisco, California 94117-1080, USA
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Department of Radiology, University of California, San Francisco, California 94117-1080, USA
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Department of Radiology, University of California, San Francisco, California 94117-1080, USA
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Department of Radiology, University of California, San Francisco, California 94117-1080, USA
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Department of Radiology, University of California, San Francisco, California 94117-1080, USA
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Department of Radiology, University of California, San Francisco, California 94117-1080, USA
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Department of Radiology, University of California, San Francisco, California 94117-1080, USA
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Department of Radiology, University of California, San Francisco, California 94117-1080, USA
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. To determine bone formation during the period of PTH administration, the mice were injected s.c. with calcein on day 0 of PTH administration followed in 12 days by demeclocycline (each 15 mg/kg) to label the mineralization fronts of the bone. Two days
Institute of Metabolism and Endocrinology, Department of Clinical Laboratory, Department of Orthopaedics, The Second Xiang-Ya Hospital of Central South University, 410011 ChangSha, People's Republic of China
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developed via different cellular mechanisms: in the case of the Irs1 −/− mice, both bone formation and resorption were decreased ( Ogata et al . 2000 ), whereas in the Irs2 −/− mice, decreased bone formation and increased bone resorption were noted
Center for Healthy Aging Research, Oregon State University, Corvallis, Oregon, USA
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Center for Healthy Aging Research, Oregon State University, Corvallis, Oregon, USA
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et al . 2013 ). The lower bone formation generally reported in these mice is primarily due to reduced osteoblast number, although reduced osteoblast activity has also been noted. The dramatic increase in bone marrow adipose tissue (MAT) in long bones