中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (34): 5484-5489.doi: 10.3969/j.issn.2095-4344.0684

• 细胞外基质材料 extracellular matrix materials • 上一篇    下一篇

富白细胞-血小板纤维蛋白促进创面愈合的优势

武钰翔1,司少艳2,许樟荣3,王爱红1,3   

  1. 1安徽医科大学中国人民解放军第306医院临床学院内分泌科,北京市 100101;2特种医学实验研究中心,北京市 100101;3中国人民解放军第306医院内分泌科,北京市 100101
  • 收稿日期:2018-06-29 出版日期:2018-12-08 发布日期:2018-12-08
  • 通讯作者: 王爱红,博士,硕士生导师,中国人民解放军第306医院内分泌科,北京市 100101
  • 作者简介:武钰翔,男,1991年生,安徽省六安市人,汉族,安徽医科大学在读硕士,主要从事糖尿病及其慢性并发症研究。
  • 基金资助:

    全军医学科技青年培育计划拔尖项目(16QNP041);首都临床特色应用研究(Z141107002514181);中华医学会临床医学科研专项资金项目(12020580358)

Leukocyte- and platelet-rich fibrin promotes wound healing

Wu Yuxiang1, Si Shaoyan2, Xu Zhangrong3, Wang Aihong1, 3   

  1. 1Department of Endocrinology, the 306th Hospital of PLA, Clinical Medicine College of Anhui Medical University, Beijing 100101, China; 2Special Medical Laboratory and Research Center, Beijing 100101, China; 3Department of Endocrinology, the 306th Hospital of PLA, Beijing 100101, China
  • Received:2018-06-29 Online:2018-12-08 Published:2018-12-08
  • Contact: Wang Aihong, MD, Master’s supervisor, Department of Endocrinology, the 306th Hospital of PLA, Clinical Medicine College of Anhui Medical University, Beijing 100101, China; Department of Endocrinology, the 306th Hospital of PLA, Beijing 100101, China
  • About author:Wu Yuxiang, Master candidate, Department of Endocrinology, the 306th Hospital of PLA, Clinical Medicine College of Anhui Medical University, Beijing 100101, China
  • Supported by:

    the PLA Medical Science and Technology Project for Youth Cultivation, No. 16QNP041; a grant from Beijing Municipal Science & Technology Commission, No. Z141107002514181; the Clinical Medical Research Special Project of Chinese Medical Association, No. 12020580358

摘要:

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文题释义:
富白细胞-血小板血浆:1993年Hood等首先提出富血小板血浆概念,是全血经过2次离心后,加入激活剂后混匀,分离得到的血小板浓缩物。富白细胞-血小板血浆含有丰富的血小板,血小板的回收率为60%左右,血小板中含有大量的生长因子,如血小板衍生生长因子、转化生长因子β、类胰岛素生长因子、表皮生长因子、血管内皮生长因子等。
富白细胞-血小板纤维蛋白:2001年由法国科学家Choukroun等发现,是继富血小板血浆后第2代血小板浓缩制品。在无外源性添加剂的情况下,全血经过1次离心后,直接分离得到的富含血小板和白细胞的凝胶。富白细胞-血小板纤维蛋白中血小板的回收率高达97%以上,纤维蛋白含量丰富,血小板中的细胞因子随着纤维蛋白的溶解逐渐释放,具有缓释作用。
 
 
背景:富白细胞-血小板血浆和富白细胞-血小板纤维蛋白是两种具有加快创面愈合功效的自体富血小板凝胶。
目的:比较富白细胞-血小板纤维蛋白及富白细胞-血小板血浆在组成成分、结构、释放生长因子方面的差异?

方法:抽取志愿者空腹静脉血,每份血样分别制备富白细胞-血小板纤维蛋白凝胶与富白细胞-血小板血浆凝胶,采用光镜及扫描电镜观察凝胶的微观结构,计算白细胞、血小板的浓缩倍数及回收率。将两种凝胶保存于DMEM培养基中,1,3,7,14,21 d后收集含有渗出液的培养液,ELISA法检测血小板源性生长因子、转化生长因子β1、血管内皮细胞生长因子的浓度。

结果与结论:①光镜下显示,富白细胞-血小板纤维蛋白凝胶内的血小板?白细胞与红细胞分界清晰,可见大量白细胞及纤维蛋白簇集;富白细胞-血小板血浆凝胶的血小板、白细胞较少,散在红细胞中;②电镜下显示,富白细胞-血小板纤维蛋白凝胶中含有大量纤维蛋白,形成致密的特殊3D结构,交界处血小板叠加结构清晰;富白细胞-血小板血浆凝胶交界处纤维较少且夹杂大量血小板,部分血小板已裂解;③与富白细胞-血小板血浆凝胶比较,富白细胞-血小板纤维蛋白凝胶具有更高的血小板回收率(P=0)、白细胞回收率(P=0)及淋巴细胞回收率(P=0);④除血管内皮细胞生长因子外,富白细胞-血小板纤维蛋白凝胶保存3,7,14,21 d的转化生长因子β1、血小板源性生长因子浓度高于富白细胞-血小板血浆凝胶;⑤结果表明与富白细胞-血小板血浆凝胶相比,富白细胞-血小板纤维蛋白凝胶制备更简单、结构更优、生长因子释放更缓慢,在治疗创面中更有优势。

关键词: 富白细胞-血小板纤维蛋白, 富白细胞-血小板血浆, 富血小板凝胶, 机制, 生长因子, 生物材料

Abstract:

BACKGROUND: Leukocyte- and platelet-rich plasma (L-PRP) and leukocyte- and platelet-rich fibrin (L-PRF) are two kinds of autologous platelet rich gels that can accelerate wound healing.

OBJECTIVE: To compare the differences in the composition, structure and release of growth factors between L-PRP and L-PRF.
METHODS: Fasting blood samples were collected from healthy volunteers to prepare L-PRP and L-PRF gels. The microstructure of the gels was observed by light microscope and scanning electron microscope, and the concentration times and recovery rates of leukocytes and platelets were calculated. The two gels were stored in DMEM medium. After 1, 3, 7, 14 and 21 days, the culture fluid containing exudate was collected. The platelet-derived growth factor, transforming growth factor β1, and vascular endothelial growth factor were detected by ELISA.
RESULTS AND CONCLUSION: (1) Under the light microscope, platelet, leukocytes and erythrocytes were clearly demarcated, and leukocytes and fibrin aggregated in cluster. The platelets and leukocytes in the L-PRP gel were less in number and dispersed among erythrocytes. (2) Under the electron microscope, a large amount of fibrins were in the L-PRF gel, to form a dense special 3D structure, and the platelet superposition structure at the junction was clear. There were less fibers and a large number of platelets at the junction of L-PRP gel, and some of the platelets were cleaved. (3) Compared with the L-PRP gel, the L-PRF had a higher platelet recovery rate (P=0), leukocyte recovery rate (P=0) and lymphocyte recovery rate (P=0). (4) In addition to the vascular endothelial cell growth factor, the levels of transforming growth factor β1 and platelet-derived growth factor in the L-PRF gel stored for 3, 7, 14 and 21 days were higher than those in the L-PRP gel. These findings indicate that compared with the L-PRP gel, the L-PRF gel is easier to prepare, has better structure and slower release of growth factors, which have more advantages in the treatment of wounds. 

Key words: Platelet-Rich Plasma, Fibrin, Wound Healing, Tissue Engineering

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