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审核状态: Project audit state: |
通过审核 Successful |
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注册号: Registration number: |
ChiCTR2000039263 |
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最近更新日期: Date of Last Refreshed on: |
2020-10-22 14:45:49 |
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注册时间: Date of Registration: |
2020-10-22 00:00:00 |
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注册号状态: |
预注册 |
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Registration Status: |
Prospective registration |
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注册题目: |
老龄骨质疏松性骨折中FFA通过WNT/β-catenin 信号轴抑制BMSCs成骨分化影响骨愈合 |
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Public title: |
FFA inhibits BMSCs osteogenic differentiation through WNT/ -catenin signaling axis and affects bone healing in osteoporotic fractures of old age |
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注册题目简写: |
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English Acronym: |
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研究课题的正式科学名称: |
老龄骨质疏松性骨折中FFA通过WNT/β-catenin 信号轴抑制BMSCs成骨分化影响骨愈合 |
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Scientific title: |
FFA inhibits BMSCs osteogenic differentiation through WNT/ -catenin signaling axis and affects bone healing in osteoporotic fractures of old age |
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研究课题代号(代码): Study subject ID: |
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在二级注册机构或其它机构的注册号: The registration number of the Partner Registry or other register: |
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申请注册联系人: |
刘超 |
研究负责人: |
尹科 |
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Applicant: |
Liu Chao |
Study leader: |
Yin Ke |
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申请注册联系人电话: Applicant telephone: |
86 15675420120 |
研究负责人电话:
Study leader's |
86 18973405240 |
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申请注册联系人传真 : Applicant Fax: |
研究负责人传真: Study leader's fax: |
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申请注册联系人电子邮件: Applicant E-mail: |
1542356375@qq.com |
研究负责人电子邮件: Study leader's E-mail: |
357520637@qq.com |
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申请单位网址(自愿提供): Applicant website(voluntary supply): |
研究负责人网址(自愿提供): Study leader's website(voluntary supply): |
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申请注册联系人通讯地址: |
湖南省衡阳市船山路69号 |
研究负责人通讯地址: |
湖南省衡阳市船山路69号 |
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Applicant address: |
69 Chuanshan Road, Hengyang, Hunan |
Study leader's address: |
69 Chuanshan Road, Hengyang, Hunan |
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申请注册联系人邮政编码: Applicant postcode: |
研究负责人邮政编码: Study leader's postcode: |
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申请人所在单位: |
南华大学附属第一医院 |
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Applicant's institution: |
The First Affiliated Hospital of Nanhua University |
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研究负责人所在单位: |
南华大学附属第一医院 |
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Affiliation of the Leader: |
The First Affiliated Hospital of Nanhua University |
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是否获伦理委员会批准: |
是 |
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Approved by ethic committee: |
Yes |
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伦理委员会批件文号: Approved No. of ethic committee: |
20201010014 |
伦理委员会批件附件: Approved file of Ethical Committee: |
查看附件View |
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批准本研究的伦理委员会名称: |
南华大学附属第一医院医学伦理委员会 |
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Name of the ethic committee: |
The Medical Ethics Committee of The First Affiliated Hospital of Nanhua University |
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伦理委员会批准日期: Date of approved by ethic committee: |
2020-10-10 00:00:00 | ||
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伦理委员会联系人: |
凌洪 |
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Contact Name of the ethic committee: |
Ling Hong |
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伦理委员会联系地址: |
湖南省衡阳市船山路69号 |
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Contact Address of the ethic committee: |
The First Affiliated Hospital of Nanhua University |
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伦理委员会联系人电话: Contact phone of the ethic committee: |
伦理委员会联系人邮箱: Contact email of the ethic committee: |
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研究实施负责(组长)单位: |
南华大学附属第一医院 |
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Primary sponsor: |
The First Affiliated Hospital of Nanhua University |
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研究实施负责(组长)单位地址: |
湖南省衡阳市船山路69号 |
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Primary sponsor's address: |
69 Chuanshan Road, Hengyang, Hunan, China |
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试验主办单位(项目批准或申办者): Secondary sponsor: |
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经费或物资来源: |
博士启动资金 |
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Source(s) of funding: |
Doctoral start-up fund |
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研究疾病: |
临床骨折 |
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Target disease: |
Clinical fractures |
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研究疾病代码: |
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Target disease code: |
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研究类型: |
观察性研究 |
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Study type: |
Observational study |
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研究所处阶段: |
探索性研究/预试验 | ||||||||||||||||||||||
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Study phase: |
0 |
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研究设计: |
横断面 |
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Study design: |
Cross-sectional |
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研究目的: |
老龄骨质疏松性骨折愈合能力下降是临床治疗治疗难点之一,其机制没有完全阐明。BMSCs作为一种多能性干细胞,其成骨分化在骨折愈合中扮演了重要角色。临床骨折病例中发现骨折端存在大量脂滴现象,尚不完全清楚脂滴在骨折愈合中的作用。既往研究表明老龄和骨质疏松均是骨髓脂肪细胞(BMA)累积的影响因素,BMA与骨质疏松相关可以损害BMSCs及骨形成。因此,我们提出假说:骨折端大量游离脂肪酸(FFA)来自骨髓脂肪细胞(BMA),高浓度FFA暴露诱发氧化应激,产生活性氧(ROS)诱导FoxO作为抗氧化应激因子相应升高,FoxO竞争性与β-catenin的结合,氧化应激导致PPARγ升高,诱导降解β-catenin,下调Wnt/β-catenin通路的活化,抑制BMSCs的成骨分化,导致骨折愈合能力下降。课题组拟在临床、细胞和动物水平上,通过脂质质谱法、RNAi技术、RIP、RNA pull down、流式细胞检测和WB等方法进一步证实科学推测,明确FFA对骨折愈合的作用机制,为老龄骨质疏松性骨折的治疗提出新的思路。 |
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Objectives of Study: |
It is not completely clean that the fracture healing ability is decreased in elderly patient with osteoporosis, which causes difficulty in clinical treatment this fracture. BMSCs are a kind of pluripotent stem cells, and their osteogenic differentiation plays an important role in fracture healing. A large number of lipid droplets are found at the fracture place in clinical cases. The role of lipid droplets in fracture healing is not fully understood. Previous studies have shown that both aging and osteoporosis are factors influencing the accumulation of bone marrow adipocytes (BMA). Increased BMA is related to osteoporosis, and can also damage BMSCs and affect bone formation. Therefore, we put forward the hypothesis: a large amount of free fatty acids (FFA) at the fracture place comes from bone marrow adipocytes (BMA). The high concentration of FFA can induce oxidative stress in the fracture place. Oxidative stress response produces reactive oxygen species (ROS), which induces FoxO as an anti-oxidative stress factor to increase accordingly, and then FoxO competitively binds to β-catenin, down-regulating the activation of Wnt/β-catenin pathway. Oxidative stress can also increase PPARγ, which induces β-catenin degradation and down-regulates the activation of Wnt/β-catenin pathway.The result of down-regulating the activation of the Wnt/β-catenin pathway is to inhibit the osteogenic differentiation of BMSCs, leading to a decline in fracture healing ability. In order to clarify the mechanism of FFA on fracture healing, this research was carried out on clinical cases, cell experiments and animal experiments by using lipid mass spectrometry, RNAi technology, RIP, RNA pull down, flow cytometry and WB methods. The results of this research can provide new ideas for the treatment of fractures in elderly patients with osteoporosis. |
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药物成份或治疗方案详述: |
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Description for medicine or protocol of treatment in detail: |
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纳入标准: |
以临床收集的老龄骨质疏松髋部骨折手术患者和正常中青年骨折手术患者的骨折端样本为研究对象,分为观察组和对照组。 |
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Inclusion criteria |
The fracture site samples collected from the elderly patients with osteoporotic hip fracture surgery and normal middle-aged and young patients with fracture surgery were divided into observation group and control group. |
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排除标准: |
1)全身多发伤; 2)恶性肿瘤、肝功能不全、肾功能不全、代谢异常 (不含糖尿病)、严重水肿和自身免疫性疾病; 3)未经知情同意, 丢失组织样本; 4)病理性骨折。 |
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Exclusion criteria: |
(1) Multiple injuries; (2) Malignant tumor, sarcopenia, liver insufficiency and renal insufficiency (creatinine >1.5 mg/dl), metabolic abnormalities (not included diabetes), severe edema and autoimmune diseases; (3) Without informed consents, lost blood samples; (4) Pathological fracture. |
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研究实施时间: Study execute time: |
从 From 2021-01-01 00:00:00至 To 2022-12-01 00:00:00 |
征募观察对象时间: Recruiting time: |
从 From 2021-01-01 00:00:00 至 To 2022-12-01 00:00:00 |
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干预措施: Interventions: |
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研究实施地点: Countries of recruitment and research settings: |
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测量指标: Outcomes: |
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采集人体标本:
Collecting sample(s)
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征募研究对象情况: Recruiting status: |
尚未开始 Not yet recruiting |
年龄范围: Participant age: |
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性别: |
男女均可 |
Gender: |
Both |
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随机方法(请说明由何人用什么方法产生随机序列): |
连续入组 |
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Randomization Procedure (please state who generates the random number sequence and by what method): |
Straight into the group |
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是否公开试验完成后的统计结果: Calculated Results after the Study Completed public access: |
不公开/Private |
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盲法: |
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Blinding: |
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是否共享原始数据: IPD sharing |
是Yes |
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共享原始数据的方式(说明:请填入公开原始数据日期和方式,如采用网络平台,需填该网络平台名称和网址): |
采用网络平台 |
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The way of sharing IPD”(include metadata and protocol, If use web-based public database, please provide the url): |
Online site |
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数据采集和管理(说明:数据采集和管理由两部分组成,一为病例记录表(Case Record Form, CRF),二为电子采集和管理系统(Electronic Data Capture, EDC),如ResMan即为一种基于互联网的EDC: |
病例记录表 |
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Data collection and Management (A standard data collection and management system include a CRF and an electronic data capture: |
Case Record From |
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数据与安全监察委员会: Data and Safety Monitoring Committee: |
有/Yes |