Repair of tendinopathic tendons

肌腱病变肌腱的修复

• 批准号: 8159691
• 负责人: JAMES H-C. WANG
• 金额: $ 34.09万
• 依托单位: UNIVERSITY OF PITTSBURGH AT PITTSBURGH
• 依托单位国家: 美国
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2016-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8159691
• 关键词: Address; Adipocytes; Adopted; Affect; Age; American; Animal Model; Athletic; Blood Platelets; Calcified; Cell Lineage; Cell physiology; Cells; Cellular Structures; Clinical Treatment; Clinical Trials; Collagen Type I; Combined Modality Therapy; Control Animal; Data; Deposition; Dinoprostone; Disease; Engineering; Enzymes; Evaluation; Gender; Goals; Growth Factor; Healed; High Prevalence; Histocytochemistry; Histologic; Human; Immunohistochemistry; In Situ; In Vitro; Inflammation; Inflammation Mediators; Injection of therapeutic agent; Interstitial Collagenase; Knowledge; Lead; Lesion; Light; Lipids; Measures; Mechanics; Modeling; Mus; Natural regeneration; Occupational; Orthopedics; Oryctolagus cuniculus; Osteocytes; Pain; Patients; Performance at work; Phenotype; Physicians; Plasma; Play; Population; Prevalence; Property; Proteins; Proteoglycan; Quality of life; Recording of previous events; Recovery; Safety; Sampling; Smooth Muscle Actin Staining Method; Sports Medicine; Staging; Stem cells; Stromelysin 1; Structure; Tendinopathy; Tendon structure; Testing; Time; Tissue Inhibitor of Metalloproteinase-1; Tissues; United States; Use Effectiveness; Western Blotting; Work; base; cellular engineering; clinically relevant; collagenase 3; design; healing; human subject; implantation; improved; in vivo; inhibitor/antagonist; injured; innovation; regenerative; repaired; self-renewal; stem cell differentiation; translational study; treatment effect

DESCRIPTION (provided by applicant): Tendinopathy, or degenerative tendons, affects millions of Americans in both occupational and athletic settings each year. Tendinopathy causes pain and discomfort, impairs work performance, and reduces quality of life. In spite of its high prevalence, current treatments of tendinopathy are not effective in restoring normal structure and function to degenerated tendons. In recent years, platelet-rich plasma (PRP) has been a popular treatment option for tendinopathy; however, whether PRP treatment is effective remains a huge controversy in orthopaedic/sports medicine. The overall objective of this project is to address this issue by defining the effects of clinically-relevant PRP treatments, along with tendon stem cells (TSCs) and engineered tendon matrix (ETM), on a validated rabbit tendinopathy model at the cellular, tissue, and functional levels. The specific aims of this project are: 1) to evaluate the effects of PRP treatment on the repair of tendinopathic tendons by PRP injection; 2) to evaluate the effects of PRP treatment on the repair of tendinopathic tendons by implantation of PRP with TSCs; and 3) to evaluate the effects of adding ETM on the repair of tendinopathic tendons. This study is highly significant in light of the fact that PRP treatment is widely used in orthopaedic/sports medicine for tendinopathy treatment in the United States despite little available scientific data that support or refute its usages. This study is also highly innovative since a potent combination of natural healing growth factors (PRP), tendon-specific regenerative cells (TSCs), and tendon specific matrix (ETM) will be explored for the first time to enhance the repair of tendinopathic tendons. We anticipate that the findings of this study will lead to the application of this combination therapy clinically to effectively repair or possibly regenerate tendinopathic tendons, thus benefiting millions of tendinopathic patients in the United States alone. PUBLIC HEALTH RELEVANCE: This project aims to enhance repair of degenerative tendons (tendinopathy) using platelet-rich plasma (PRP), regenerative tendon-specific stem cells, and engineered tendon matrix. The results of this study will impact orthopaedic/sports medicine practice by providing much awaited scientific data on PRP treatment of tendinopathy.

描述（由申请人提供）：每年在职业和运动环境中影响数百万美国人。肌腱病会引起疼痛和不适，损害工作表现并降低生活质量。尽管患病率很高，但肌腱病的当前治疗方法在恢复正常的结构和退化肌腱的功能方面无效。近年来，富含血小板的血浆（PRP）一直是肌腱病的流行治疗选择。但是，PRP治疗是否有效仍然是骨科/运动医学的巨大争议。该项目的总体目的是通过定义与肌腱干细胞（TSC）和工程肌腱矩阵（ETM）对经过验证的兔肌腱病模型在细胞，组织和功能水平上的经过验证的兔肌腱病模型中定义与临床相关的PRP处理的影响。该项目的具体目的是：1）评估PRP治疗对PRP注射修复肌腱肌腱的影响； 2）评估PRP治疗对通过将PRP植入TSC修复肌腱肌肌腱的影响； 3）评估添加ETM对肌腱疗法肌腱修复的影响。鉴于PRP治疗被广泛用于美国肌腱病治疗的事实，尽管很少有可用的科学数据支持或反驳其用法，但这项研究非常重要。这项研究也是高度创新的，因为将首次探索自然愈合生长因子（PRP），肌腱特异性再生细胞（TSC）和肌腱特异性基质（ETM）的有效组合，以增强肌腱病的修复。我们预计，这项研究的结果将导致这种联合疗法在临床上应用有效修复或可能再生肌腱疗法肌腱，从而使仅美国的数百万肌病患者受益。 公共卫生相关性：该项目旨在使用富含血小板的血浆（PRP），再生肌腱特异性干细胞和工程肌腱基质来增强退化性肌腱（肌腱病）的修复。这项研究的结果将通过提供已久的有关PRP治疗肌腱病的科学数据来影响骨科/运动医学实践。