Association Between Serum Periostin Levels and Cortical Porosity in Patients With Secondary Hyperparathyroidism
Based on the evidence that periostin is specifically involved in intra-cortical remodeling control, our working hypothesis is that assessment of its concentration in the serum would be helpful in identifying patients with severe cortical porosity, a critical parameter in bone fragility. Periostin expression by osteoblasts and osteocytes is part of the bone cortical response to anabolic stimuli such as mechanical strain or intermittent increase in parathyroid hormone. However, it remains unknown whether this expression may participate as well to mechanisms that will lead to exaggerated intra-cortical remodeling and subsequent bone loss.
In rare clinical situations in which trans-iliac bone biopsies will be necessary to better understand their bone status in addition to densitometry and biological bone markers assessment, specific analyses using immune-staining techniques will be performed on the bone sample. Data from routine follow-up every six months will be also collected in this specific sub-group.
High resolution peripheral quantitative computerized tomography (HR-pQCT) gives the opportunity of performing a virtual bone biopsy providing information on trabecular and cortical microarchitecture in vivo. These microarchitectural parameters allow a more accurate evaluation of the alteration of the bone structure and therefore of the fracture risk as compared to current tools used in clinical practice such as densitometry. However, the availability of such HRpQCT facilities is limited and there is on-going development on the best way of measuring porosity for example. The definition of a biological profile including key proteins such as periostin and sclerostin involved in porosity mechanisms is therefore of great interest. A better understanding of the relationship between bone matrix components and parathyroid hormone effects also appears as critical. Follow-up of routine evaluation parameters reflecting bone status in a subgroup of specific patients could also provide new and additional information.
研究概览
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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Saint-etienne、法国、42000
- CHU de Saint-Etienne
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参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
- Hyperparathyroidism defined by a parathyroid hormone serum level above 65 ng/ml, secondary to Chronic Kidney Disease (CKD) ou vitamin D deficiency
Exclusion Criteria:
- Concurrent bone disease (such as Paget's disease, osteomalacia),
- Other endocrinopathy having an impact on bone metabolism (such as Cushing, hyperthyroidism, severe hypogonadism (except menopause)),
- Current or previous bisphosphonate treatment.
- Transplantation
- parathyroidectomy
- Life expectancy less than 3 months.
- Lack of study understanding.
- Lack of agreement.
- Under legal control.
学习计划
研究是如何设计的?
设计细节
- 主要用途:基础科学
- 分配:不适用
- 介入模型:单组作业
- 屏蔽:无(打开标签)
武器和干预
参与者组/臂 |
干预/治疗 |
---|---|
实验性的:secondary hyperparathyroidism
Blood specimen and HR-pQCT for measure bone quality and quantity
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血液标本
The Xtrem CT scanco device is a HR-pQCT used for 3D bone measurements at the tibia and the radius levels in humans
其他名称:
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研究衡量的是什么?
主要结果指标
结果测量 |
措施说明 |
大体时间 |
---|---|---|
Correlation between periostin level and cortical porosity
大体时间:day 1
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Correlation between periostin serum level (ng/ml) and cortical porosity.
Cortical porosity (%) is measured by HR-pQCT
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day 1
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
---|---|---|
Correlation between periostin level and other trabecular and cortical microarchitectural parameters (composite outcome)
大体时间:day 1
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Correlation between periostin serum level (ng/ml) and other trabecular and cortical microarchitectural parameters. Cortical microarchitectural parameters are a composite measure measured by HR-pQCT. The measures are : Total volumetric mineral density (mg/ccm HA), Trabecular volumetric mineral density (mg/ccm HA), Cortical volumetric mineral density (mg/ccm HA), Number of bone trabeculae (1/mm), Trabecular thickness (mm), Cortical thickness (mm), Trabecular spacing (mm) o Trabecular distribution (mm) |
day 1
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Correlation between parathyroid hormon level and other trabecular and cortical microarchitectural parameters (composite outcome)
大体时间:day 1
|
Correlation between parathyroid hormon serum level (pg/ml) and other trabecular and cortical microarchitectural parameters. Cortical microarchitectural parameters are a composite measure measured by HR-pQCT. The measures are : Total volumetric mineral density (mg/ccm HA), Trabecular volumetric mineral density (mg/ccm HA), Cortical volumetric mineral density (mg/ccm HA), Number of bone trabeculae (1/mm), Trabecular thickness (mm), Cortical thickness (mm), Trabecular spacing (mm) o Trabecular distribution (mm) |
day 1
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Correlation between Sclerostin serum level and cortical porosity
大体时间:Day 1
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Correlation between Sclerostin serum level (ng/ml) and cortical porosity.Cortical porosity (%) is measured by HR-pQCT.
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Day 1
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Correlation between parathyroid hormon level and cortical porosity
大体时间:Day 1
|
Correlation between parathyroid hormon serum level (pg/ml) and cortical porosity.Cortical porosity (%) is measured by HR-pQCT.
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Day 1
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合作者和调查者
调查人员
- 首席研究员:Thierry THOMAS, MD PhD、CHU de Saint-Etienne
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (估计)
上次提交的符合 QC 标准的更新
最后验证
更多信息
与本研究相关的术语
其他相关的 MeSH 术语
其他研究编号
- 1308046
- 130560B-22 (其他标识符:ANSM)
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