Abstract:
:In this review, we address current concepts and recent experimental results that relate to heterogeneity in the physiologic, biochemical, and morphologic properties of mammalian skeletal muscle fibers. Recent data reinforce some of these current concepts while questioning others. The biochemical bases of the concepts of fiber types continue to evolve, particularly in reference to the combinations of the myosin light and heavy chains that are expressed in most mammalian skeletal muscle fibers. Further, it is becoming increasingly clear that specific myosin isoforms relate to contractile function. What remains unclear, however, are the bases for a continuum in functional properties, eg, the maximum velocity of shortening, rather than distinct increments in these properties as might be predicted based on myosin isoforms alone. Clearly, there are factors other than myosin that play a role in defining the characteristics of a fiber, and some of these other factors are discussed. A second general issue addressed in this review is the source of the control of the heterogeneity among fibers of a skeletal muscle. Data are presented that demonstrate that this heterogeneity is not simply a function of the patterns of activation of motoneurons. It appears that the motoneuron can maintain practically all type-related features of fibers in the absence of neuromuscular activity. Although the motoneuron can influence muscle protein expression, it is equally clear that there are myogenic and hormonal factors that have significant regulatory roles. In effect, muscle fiber types reflect a complex interaction of multiple sources of control of protein expression, and the net effect of the control ultimately defines its functional properties.
journal_name
Curr Opin Rheumatoljournal_title
Current opinion in rheumatologyauthors
Talmadge RJ,Roy RR,Edgerton VRdoi
10.1097/00002281-199305060-00002subject
Has Abstractpub_date
1993-11-01 00:00:00pages
695-705issue
6eissn
1040-8711issn
1531-6963journal_volume
5pub_type
杂志文章,评审abstract:PURPOSE OF REVIEW:Majority of patients with axial spondyloarthritis (axSpA) report use of complementary and alternative medicine (CAM) therapies before and even after the diagnosis, due to perceived efficacy and wide-spread belief that these modalities lack side effects. In this review, we describe the available scient...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0000000000000513
更新日期:2018-07-01 00:00:00
abstract::In this review, four areas are discussed: fluoroquinolone-induced tendinitis, volar flexor tenosynovitis (trigger finger), Achilles tendon lesions, and occupational medicine issues. The relationship of fluoroquinolone treatment to musculoskeletal lesions, especially Achilles tendinitis and tear, is most intriguing. Th...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-199703000-00012
更新日期:1997-03-01 00:00:00
abstract::Neoplasia in an important cause of rheumatic disease. The mechanisms are either direct infiltration of the bone and joint, or indirect infiltration with manifestations distant from the site of neoplastic involvement. Many of the reports reviewed in this article center on direct associations. In particular, there is a ...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-199102000-00020
更新日期:1991-02-01 00:00:00
abstract::The Achilles tendon is the strongest tendon in the human body. Because most Achilles tendon injuries take place in sports and there has been an common upsurge in sporting activities, the number and incidence of the Achilles tendon overuse injuries and complete ruptures have increased in the industrialized countries du...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-200103000-00009
更新日期:2001-03-01 00:00:00
abstract:PURPOSE OF REVIEW:Renal complications are important in scleroderma (systemic sclerosis) and include scleroderma renal crisis. This is a medical emergency that requires careful management. Recent cohort studies have highlighted key aspects of management and outcome and these are reviewed. RECENT FINDINGS:Two recent art...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0b013e3283108df7
更新日期:2008-11-01 00:00:00
abstract:PURPOSE OF REVIEW:Axial spondyloarthritis (axSpA) is a chronic inflammatory condition with articular and extra-articular manifestations. Remission, a state of absence of clinical and imaging signs of disease activity over time, is the goal of management. This review addresses the concept of minimal disease activity (MD...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0000000000000387
更新日期:2017-07-01 00:00:00
abstract::HLA-B27 is virtually absent in most of the sub-Saharan Africa populations, and ankylosing spondylitis is rare; only a few patients have been reported from central and southern Africa. HLA-B27 was present in only one of 17 patients (6%). The disease shows clinical features that are similar to those observed in white HL...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-200007000-00008
更新日期:2000-07-01 00:00:00
abstract::There is growing evidence that distinct molecular and cellular interactions in the rheumatoid synovium result in a complex cascade of pathophysiologic events. These interactions finally lead to progressive joint destruction, in a way that is different from all other joint diseases. Keystones are inflammation, prolifer...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-199605000-00008
更新日期:1996-05-01 00:00:00
abstract:PURPOSE OF REVIEW:To review recent evidence on cutaneous manifestations of lupus, with a focus on evidence for pediatric patients. RECENT FINDINGS:Cutaneous manifestations of SLE are common and may precede signs or symptoms of systemic disease. Early recognition and initiation of therapy improves quality of life by re...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0000000000000610
更新日期:2019-09-01 00:00:00
abstract::During the past 2 years, four papers describing new research studies and three papers reviewing the literature were published. These seven papers address longstanding issues, including 1) the presence or absence of cognitive impairment in systemic lupus erythematosus (SLE), 2) the prevalence of such impairment within ...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-199809000-00008
更新日期:1998-09-01 00:00:00
abstract:PURPOSE OF REVIEW:The aim of this study was to evaluate the relationship between infection with SARS-CoV-2 and autoimmunity. RECENT FINDINGS:Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome (SARS) associated coronavirus 2 (SARS-CoV-2). Although most of the infect...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章
doi:10.1097/BOR.0000000000000776
更新日期:2021-03-01 00:00:00
abstract:PURPOSE OF REVIEW:Inclusion body myositis (IBM) is a poorly understood autoimmune and degenerative disorder of skeletal muscle. Here, pathophysiological and diagnostic biomarkers of IBM are reviewed. RECENT FINDINGS:Muscle histopathological biomarkers have been successful in stimulating the study of IBM pathophysiolog...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/01.bor.0000434665.75998.f5
更新日期:2013-11-01 00:00:00
abstract:PURPOSE OF REVIEW:Recent interest in gout has led to development of new drugs for acute gout and long-term urate-lowering, as well as interest in improving the use of older drugs. The patients' comorbidities and concomitant medications may contribute to the risk of adverse drug reactions with anti-gout therapies. This ...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0000000000000031
更新日期:2014-03-01 00:00:00
abstract:PURPOSE OF REVIEW:Rheumatoid arthritis (RA) is a systemic, autoimmune disease resulting in the destruction of affected joints. Even though current therapies with biologics such as tumor necrosis factor-alpha blockers yield significant improvement for the patients, the disease is not curable yet. Therefore, we need nove...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0b013e3283389641
更新日期:2010-05-01 00:00:00
abstract::Over the past year, many reports have been published on a variety of clinical manifestations related to antiphospholipid antibodies. The low prevalence of anticardiolipin antibodies with the rare occurrence of thrombosis and a low rate of fetal loss in studies in Malaysia and China showed a potential role for local fa...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:
更新日期:1992-10-01 00:00:00
abstract:PURPOSE OF REVIEW:There is an increasing interest in improving the understanding of pathophysiology, outcome measures, and therapies of rheumatic skin disease. Increasingly, studies are using the skin as a primary endpoint for evaluating therapies. This will review the current state of the art for the most common rheum...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0b013e328333b9e2
更新日期:2010-01-01 00:00:00
abstract:PURPOSE OF REVIEW:Takayasu arteritis remains a therapeutic challenge. In spite of current treatments, progression of vascular lesions is observed frequently. The purpose of this article is to describe advances in therapeutic strategies for Takayasu arteritis. RECENT FINDINGS:Immunosuppressive agents including methotre...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/01.bor.0000146607.65808.37
更新日期:2005-01-01 00:00:00
abstract:PURPOSE OF REVIEW:Evidence accumulated since 2010 indicates that human osteoarthritis should now be reclassified as a systemic musculoskeletal disease rather than a focal disorder of synovial joints. RECENT FINDINGS:Inflammation was seen as the key component promoting synovitis as well as progression of cartilage and ...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0000000000000162
更新日期:2015-05-01 00:00:00
abstract::The immune defense against extracellular pathogens is largely dependent on antibody production. Class switch recombination and somatic hypermutation shape the secondary antibody repertoire in peripheral lymphoid tissue. In the past few years, a series of primary immune deficiencies characterized by defects in these pr...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-200307000-00009
更新日期:2003-07-01 00:00:00
abstract::Systemic lupus erythematosus is a prototypic autoimmune disease characterized by antinuclear antibodies (ANAs), including pathogenic specificities to DNA. As shown by recent research, ANA production is a genetically determined process in which self antigens drive B and T cells that have escaped the normal mechanisms o...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-200009000-00002
更新日期:2000-09-01 00:00:00
abstract:PURPOSE OF REVIEW:Regeneration of damaged articular cartilage remains one of the most challenging problems in orthopedic surgery. Distinct surgical procedures were developed for the repair of focal cartilage defects and this review will focus on recent aspects of cell-based healing approaches that aim to achieve restor...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0b013e3282a95e4c
更新日期:2007-09-01 00:00:00
abstract:PURPOSE OF REVIEW:Chronic periaortitis is characterized by a fibro-inflammatory process spreading from the abdominal aorta and the iliac arteries. Originally, chronic periaortitis was considered a localized inflammatory response to severe aortic atherosclerosis. However, subsequent studies have shown that chronic peria...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0b013e328341137d
更新日期:2011-01-01 00:00:00
abstract:PURPOSE OF REVIEW:The purpose of this study is to review the evidence and recent developments leading to novel therapeutics in scleroderma. RECENT FINDINGS:Recent advances have been made in understanding the key pathogenetic aspects of scleroderma, and these have led to potential targeted therapeutic agents for the ma...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0b013e328337c3d6
更新日期:2010-05-01 00:00:00
abstract:PURPOSE OF REVIEW:Patients with osteoporosis suffer from the morbidity and mortality associated with resultant fractures. The number of persons at risk for fractures is increasing as the US population ages. This review addresses preventive strategies that can be used to decrease the risk of minimal trauma fractures. R...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0b013e3283439426
更新日期:2011-03-01 00:00:00
abstract:PURPOSE OF REVIEW:Although 6 years have elapsed since the initial report describing the presence of microchimeric cells in affected tissues from patients with systemic sclerosis, a mechanism by which these cells might contribute to the pathogenesis of the disease is still unknown. This article reviews the published lit...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/01.bor.0000145516.45854.7b
更新日期:2005-01-01 00:00:00
abstract::Epidemiologic studies of rheumatic diseases can be broadly divided into those that describe the occurrence of specific disorders, those that attempt to quantify the role of putative risk factors for disease occurrence, and those that define the outcome and factors associated with it. Studies in this area have tended t...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-199903000-00002
更新日期:1999-03-01 00:00:00
abstract::Nitric oxide (NO) and prostaglandin E2 (PGE2) are two pleiotropic inflammatory mediators overproduced in arthritis-affected joints. The inducible isoform of nitric oxide synthase (iNOS) and cyclooxygenase (COX-2) are found both in the synovial tissue and in the cartilage. Their expression is regulated by catabolic cyt...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-199905000-00009
更新日期:1999-05-01 00:00:00
abstract::Cytokines and growth factors are important in bone tissue as mediators of cell-to-cell and matrix-to-cell communication. Cytokines also locally mediate the effects of several hormones on bone cells. Indeed, calciotropic hormones modulate the bone-cell production rate of these factors and, conversely, can change the nu...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-199305030-00012
更新日期:1993-05-01 00:00:00
abstract::The concept suggesting the involvement of the proinflammatory cytokine tumor necrosis factor (TNF)-alpha in the pathogenesis of rheumatoid arthritis (RA) has been demonstrated by several clinical trials targeting TNF-alpha. In addition to reduction of pain and swelling, a dramatic effect of TNF blocking therapies on t...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/00002281-200105000-00010
更新日期:2001-05-01 00:00:00
abstract:PURPOSE OF REVIEW:To review the present knowledge of the role of endoplasmic reticulum (ER) stress and unfolded protein response (UPR) in the pathogenesis of fibrotic diseases. RECENT FINDINGS:ER stress and UPR occur in a number of diseases associated with organ fibrosis; however, the contribution of these pathways to...
journal_title:Current opinion in rheumatology
pub_type: 杂志文章,评审
doi:10.1097/BOR.0b013e3283588dbb
更新日期:2012-11-01 00:00:00