跳至主要内容
临床试验/NCT02672826
NCT02672826已完成不适用

Description of the Endothelial Phenotypes From the Subcutaneous Abdominal and Gluteo-femoral Adipose Tissues in Women

University Hospital, Toulouse2 个研究点 分布在 1 个国家目标入组 50 人开始时间: 2013年6月1日最近更新:
适应症

试验速览

阶段
不适用
状态
已完成
入组人数
50
试验地点
2
主要终点
number of endothelial cells

研究概览

简要总结

The endothelium is a key barrier between blood and tissue compartments. It is a major target of factors involved in metabolic and cardiovascular pathologies. However, the study of native human adult endothelial cells is difficult due to the lack of appropriate models and thereafter the endothelium is actually not easily accessible for clinical investigation. However, our results recently showed that the endothelium from human adipose tissue exhibit distinct phenotypes, including endothelial cell number and inflammatory, angiogenic and senescent state, according to adipose tissue location, i.e. subcutaneous and visceral. It is well recognized that estrogens favour gluteo-femoral adipose tissue deposit and their deficit after menopause is associated with increased abdominal and visceral fat mass as well as metabolic dysfunctions. These perturbations might be prevented with hormonal therapy. However, no data are available concerning the endothelial cells from gluteo-femoral and abdominal adipose tissues in women.

详细描述

The adipose tissues (gluteo-femoral and abdominal) will be obtained from women programmed for surgery in which the estrogenic status as well as adipose tissue mass profile will be evaluated. The phenotype (inflammatory and angiogenic activation and senescent state) of native endothelial cells will be determined "in situ" by immunohistochemical and flow cytometry approaches and on isolated endothelial cells by Reverse transcriptase-Q Polymerase Chain Reaction and Western blot. In vitro approaches will be performed 1) to establish a causal relationship between endothelial senescence and activation state, 2) to define the impact of the adipose tissue microenvironment on the endothelial cell activation and senescence and 3) to study the potential protective effect of estrogens on endothelial senescence.

研究设计

研究类型
Interventional
分配方式
Na
干预模型
Single Group
主要目的
Other
盲法
None

入排标准

年龄范围
25 Years 至 65 Years(Adult, Older Adult)
性别
Female
接受健康志愿者

入选标准

  • Stable weight for at least 3 months
  • Women undergoing a surgery of subcutaneous adipose tissue

排除标准

  • Undergoing Insulin therapy
  • Undergoing steroidal and nonsteroidal anti-inflammatory treatments
  • undergoing or stopped since less than 6 months immunosuppressive treatments
  • Positive serology for HIV, Hepatitis B Virus and/or Hepatitis C Virus

结局指标

主要结局

number of endothelial cells

时间窗: day 1

次要结局

  • Correlation between estrogens level on endothelial senescence(day 1)
  • number of senescent cells(day 1)
  • Correlation between endothelial senescence and activation state(day 1)

研究者

申办方类型
Other
责任方
Sponsor

研究点 (2)

Loading locations...

相似试验