Abstract：
:Frailty is highly prevalent in the elderly, increasing the risk of poor outcomes that include falls, incident disability, hospitalization, and mortality. Thus, a great need exists to characterize the underlying mechanisms and ultimately identify strategies that prevent, delay, and even reverse frailty. Mouse models can provide insight into molecular mechanisms of frailty by reducing variability in lifestyle and genetic factors that can complicate interpretation of human clinical data. Frailty, generally recognized as a syndrome involving reduced homeostatic reserve in response to physiologic challenges and increasing susceptibility to poor health outcomes, is predominantly assessed using two independent strategies, integrated phenotype and deficit accumulation. The integrated phenotype defines frailty by the presentation of factors affecting functional capacity such as weight loss, exhaustion, low activity levels, slow gait, and grip strength. The deficit accumulation paradigm draws parameters from a greater range of physiological systems, such as the ability to perform daily activities, coordination and gait, mental components, physiological problems, and history and presence of medical morbidities. This strategic division also applies within the emerging field of mouse frailty models, with both methodologies showing usefulness in providing insight into physiologic mechanisms and testing interventions. Our review will explore the strategies used, caveats in methodology, and future directions in the application of animal models for the study of the frailty syndrome.
journal_name
Curr Osteoporos Repjournal_title
Current osteoporosis reportsauthors
Seldeen KL,Pang M,Troen BRdoi
10.1007/s11914-015-0283-ysubject
Has Abstractpub_date
2015-10-01 00:00:00pages
280-6issue
5eissn
1544-1873issn
1544-2241journal_volume
13pub_type
杂志文章,评审abstract：:There is an increasing repertoire of laboratory tests available for assessing the bone remodeling process. Biochemical markers of bone remodeling can be measured in serum or urine, and have a number of potential roles in the management of fracture risk. Differences in remodeling between individuals might be related to...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-996-0002-9
更新日期：2003-12-01 00:00:00
abstract：:Although traditional diagnosis and treatment of renal osteodystrophy focused on changes in bone turnover, current data demonstrate that abnormalities in skeletal mineralization are also prevalent in pediatric chronic kidney disease (CKD) and likely contribute to skeletal morbidities that continue to plague this popula...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-015-0253-4
更新日期：2015-04-01 00:00:00
abstract：:Understanding of osteoclast formation and activation has advanced considerably since the discovery of the RANKL/RANK/OPG system in the mid 1990s. Osteoblasts and stromal stem cells express receptor activator of NF-jB ligand (RANKL), which binds to its receptor, RANK, on the surface of osteoclasts and their precursors....
journal_title：Current osteoporosis reports
pub_type： 杂志文章
doi：10.1007/s11914-007-0024-y
更新日期：2007-09-01 00:00:00
abstract：:Bone metastasis is a deadly complication of cancers arising from many different primary tumor locations. Cross talk between cancer and bone cells is a well-established driver of bone metastasis, and recent work reveals microRNA (miRNA) as key players in this communication. Functional significance of miRNA was first de...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-016-0316-1
更新日期：2016-10-01 00:00:00
abstract：:Establishing a Fracture Liaison Service (FLS) to identify and treat patients with a recent fragility fracture has been shown to be effective, save money, useful to document high quality of care, and makes good clinical sense. A FLS starts with an osteoporosis champion and encompasses identification of patients with a ...
journal_title：Current osteoporosis reports
pub_type： 杂志文章
doi：10.1007/s11914-013-0177-9
更新日期：2013-12-01 00:00:00
abstract：:The pediatric origin of osteoporosis has led many investigators to focus on determining factors that influence bone gain during growth and methods for optimizing this gain. Bone responds to bone loading activities by increasing mass or size. Overall, pediatric studies have found a positive effect of bone loading on bo...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-013-0152-5
更新日期：2013-09-01 00:00:00
abstract：PURPOSE OF REVIEW:One aim in bone tissue engineering is to develop human cell-based, 3D in vitro bone models to study bone physiology and pathology. Due to the heterogeneity of cells among patients, patient's own cells are needed to be obtained, ideally, from one single cell source. This review attempts to identify the...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-020-00648-6
更新日期：2021-01-15 00:00:00
abstract：:Osteocytes, the most abundant cell type in bone, remain the least characterized. Several theories have been proposed regarding their function, including osteolysis, sensing the strains produced in response to mechanical loading of bones, and producing signals that affect the function of osteoblasts and osteoclasts and...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-007-0007-z
更新日期：2007-06-01 00:00:00
abstract：PURPOSE OF THIS REVIEW:The goal of the review is to provide an updated understanding of the pathophysiology of glucocorticoid-induced osteoporosis and treatment recommendations. RECENT FINDINGS:Glucocorticoids reduce osteoblast and osteocyte lifespan and activity and reduce the vascularity of the bone that together ma...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-019-00498-x
更新日期：2019-02-01 00:00:00
abstract：:Osteoporosis presents a dilemma for the orthopedic surgeon. Screw fixation within the bone is crucial for mechanical stabilization, maintenance of reduction, and ultimately, fracture healing. For the patient, soft bones and physiological fragility usually benefit from immediate weight bearing and mobility to avoid fur...
journal_title：Current osteoporosis reports
pub_type： 杂志文章
doi：10.1007/s11914-012-0124-1
更新日期：2012-12-01 00:00:00
abstract：:The greatest cause of preventable morbidity and mortality is smoking, and one of the often-underappreciated effects of smoking is profound bone loss. The existing clinical paradigm for smoking is that there is a low turnover osteoporosis. This review highlights findings from recent clinical trials and animal research ...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-011-0068-x
更新日期：2011-12-01 00:00:00
abstract：:Calcium is the dominant mineral in bone and is a shortfall nutrient in the diet. For those consuming inadequate dietary calcium, calcium supplements have been a standard strategy for prevention of osteoporosis. Recently, calcium supplementation has been linked to both increased and decreased cardiovascular disease ris...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-014-0208-1
更新日期：2014-06-01 00:00:00
abstract：PURPOSE OF REVIEW:This study aims to describe bone marrow fat changes in diabetes and to discuss the potential role of marrow fat in skeletal fragility. RECENT FINDINGS:Advances in non-invasive imaging have facilitated marrow fat research in humans. In contrast to animal studies which clearly demonstrate higher levels...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-016-0336-x
更新日期：2016-12-01 00:00:00
abstract：PURPOSE OF REVIEW:The aim of this review was to compile a list of tools currently available to study bone cells and in particular osteocytes. As the interest (and importance) in osteocyte biology has greatly expanded over the past decade, new tools and techniques have become available to study these elusive cells, RECE...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-020-00613-3
更新日期：2020-10-01 00:00:00
abstract：PURPOSE OF REVIEW:This review critiques the ability of CT-based methods to predict incident hip and vertebral fractures. RECENT FINDINGS:CT-based techniques with concurrent calibration all show strong associations with incident hip and vertebral fracture, predicting hip and vertebral fractures as well as, and sometime...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-018-0450-z
更新日期：2018-08-01 00:00:00
abstract：:Many orthobiologic adjuvants are available and widely utilized for general skeletal restoration. Their use for the specific task of osteoporotic fracture augmentation is less well recognized. Common conductive materials are reviewed for their value in this patient population including the large group of allograft adju...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-014-0249-5
更新日期：2015-02-01 00:00:00
abstract：PURPOSE OF REVIEW:Mechanical loading is an essential stimulus for skeletal tissues. Osteocytes are primarily responsible for sensing mechanical stimuli in bone and for orchestrating subsequent responses. This is critical for maintaining homeostasis, and responding to injury/disease. The osteocyte mechanotransduction pa...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-018-0485-1
更新日期：2018-12-01 00:00:00
abstract：PURPOSE OF REVIEW:Fractures of osteoporotic bone in elderly individuals need special attention. This manuscript reviews the current strategies to provide sufficient fracture fixation stability with a particular focus on fractures that frequently occur in elderly individuals with osteoporosis and require full load-beari...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-019-00535-9
更新日期：2019-12-01 00:00:00
abstract：:Because there are now effective agents for treatment of osteoporosis, the question is being raised as to whether or not it is ethical to have placebo-controlled trials of new agents. It is ethical for patients who are at low risk of serious or irreversible harm to participate in placebo-controlled trials as long as th...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-004-0012-4
更新日期：2004-03-01 00:00:00
abstract：PURPOSE OF REVIEW:Neurogenic heterotopic ossification (NHO) is the abnormal formation of extra-skeletal bones in periarticular muscles after damage to the central nervous system (CNS) such as spinal cord injury (SCI), traumatic brain injury (TBI), stroke, or cerebral anoxia. The purpose of this review is to summarize r...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-020-00636-w
更新日期：2020-12-01 00:00:00
abstract：:Intercellular communication within the bone microenvironment is critical for the maintenance of normal bone structure. Osteoblast-lineage cells at all stages of differentiation, from pluripotent precursors to matrix-embedded osteocytes, produce regulatory factors that modulate the differentiation and activity of both ...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-012-0096-1
更新日期：2012-06-01 00:00:00
abstract：PURPOSE OF REVIEW:This paper describes recent advances in understanding the mechanisms that drive fracture pain and how these findings are helping develop new therapies to treat fracture pain. RECENT FINDINGS:Immediately following fracture, mechanosensitive nerve fibers that innervate bone are mechanically distorted. ...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-018-0446-8
更新日期：2018-08-01 00:00:00
abstract：:Metabolic bone disease is a major public health concern, especially when it manifests as hip fracture which carries significant morbidity and mortality. Individuals with neurological disease are at higher risk of osteopenia, osteoporosis and fragility fracture compared to age-matched controls, yet this is under-apprec...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-016-0320-5
更新日期：2016-10-01 00:00:00
abstract：:Osteoporotic fractures result in significant morbidity and mortality. Anabolic agents reverse the negative skeletal balance that characterizes osteoporosis by stimulating osteoblast-dependent bone formation to a greater degree than osteoclast-dependent bone resorption. Parathyroid hormone (PTH) and parathyroid hormone...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-013-0171-2
更新日期：2013-12-01 00:00:00
abstract：:Stem cells differ from other cells of the body in their potential for multilineage differentiation and their continued proliferation without substantial loss of potential (so-called self-renewal). These properties are maintained and regulated by a specific microenvironment referred to as "niche." This term has been us...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-011-0075-y
更新日期：2011-12-01 00:00:00
abstract：:The past decade has seen a significant expansion of our understanding of the interaction between the neural system and bone. While innervation of bone was long appreciated, the discovery of central relays from the hypothalamus to the cells of bone has seen the identification of a number of efferent neural pathways to ...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-012-0102-7
更新日期：2012-06-01 00:00:00
abstract：:Nutritional status is an essential component in determining whole body energy homeostasis. The balance between energy/food intake and metabolism is governed by a range of hormones secreted from various parts of the body. Their subsequent dissemination via the blood results in a wide range of biological responses inclu...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-013-0157-0
更新日期：2013-09-01 00:00:00
abstract：:Surrogate markers in clinical medicine provide a useful means to assess therapeutic response to pharmacologic therapy in a wide range of chronic disease states. In the area of osteoporosis, the surrogate markers of change in bone mineral density (BMD) and bone turnover markers (BTM) provide the clinician with a means ...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-005-0018-6
更新日期：2005-09-01 00:00:00
abstract：:Microbial biofilms have been observed and described in bone specimens of patients with bisphosphonate (BP)-associated osteonecrosis of the jaw (BONJ) and investigators are more recently suggesting that this condition essentially represents an osteomyelitis of the jaw clinically, with greater susceptibility in some pat...
journal_title：Current osteoporosis reports
pub_type： 杂志文章
doi：10.1007/s11914-010-0008-1
更新日期：2010-03-01 00:00:00
abstract：PURPOSE OF REVIEW:Osteogenesis is a complex process involving the specification of multiple progenitor cells and their maturation and differentiation into matrix-secreting osteoblasts. Osteogenesis occurs not only during embryogenesis but also during growth, after an injury, and in normal homeostatic maintenance. While...
journal_title：Current osteoporosis reports
pub_type： 杂志文章,评审
doi：10.1007/s11914-017-0379-7
更新日期：2017-08-01 00:00:00
