Sustained Release of Transforming Growth Factor-β1 from Platelet-Rich Chondroitin Sulfate Glycosaminoglycan Gels.

Sustained Release of Transforming Growth Factor-β1 from Platelet-Rich Chondroitin Sulfate Glycosaminoglycan Gels.
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DOI:
10.1055/s-0037-1603801
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发表时间:
2018-05
期刊:
The journal of knee surgery
影响因子:
--
通讯作者:
Franklin SP
Franklin SP
中科院分区:
其他
文献类型:
--
作者:
Birdwhistell KE;Karumbaiah L;Franklin SP

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活化的富血小板血浆(PRP),也称为富血小板纤维蛋白(PRF),已被用于增强膝关节软骨修复的多种技术,但并不总是能产生优质的修复组织。 PRF 不能始终如一地产生良好的软骨再生的一个可能原因是 PRF 提供的生长因子是短暂的。本研究的目的是比较 PRF 和 PRP 与新型硫酸软骨素糖胺聚糖 (CS-GAG) 凝胶联合释放转化生长因子 (TGF)-β1。 PRP 由 9 只健康狗制备并分成两等份:一份用牛凝血酶和氯化钙 (CaCl2) 活化以形成 PRF,另一份用于再水化冻干 CS-GAG 凝胶。 PRF 和 CS-GAG 凝胶均在培养基中孵育 13 天,每 48 小时收集、储存和更换培养基,并使用酶联免疫吸附测定对培养基中 TGF-β1 的浓度进行定量。在第 3、5、7、9 和 13 天,使用 CS-GAG 凝胶时,培养基中 TGF-β1 的浓度高达三倍,并且显着高于 PRF(p < 0.05)。此外,使用 CS-GAG 凝胶时,在第 13 天时,TGF-β1 洗脱仍然较多。需要进行额外的体外工作来表征从带有人 PRP 的 CS-GAG 凝胶中洗脱的 TGF-β1,并确定使用这些 CS-GAG 凝胶是否可以增强体内软骨修复。
Activated platelet-rich plasma (PRP), also referred to as platelet-rich fibrin (PRF), has been used to augment numerous techniques of cartilage repair in the knee but does not always result in superior quality of repair tissue. One possible reason that PRF does not consistently result in excellent cartilage regeneration is the transiency of growth factor provision with PRF. The objective of this study was to compare the release of transforming growth factor (TGF)-β1 from PRF and from PRP combined with a novel chondroitin sulfate glycosaminoglycan (CS-GAG) gel. PRP was prepared from nine healthy dogs and split into two aliquots: one activated with bovine thrombin and calcium chloride (CaCl2) to form PRF and the other aliquot was used to rehydrate a lyophilized CS-GAG gel. Both PRF and the CS-GAG gels were incubated in media for 13 days and media were collected, stored, and replaced every 48 hours and the concentration of TGF-β1 quantified in the media using an enzyme-linked immunosorbent assay. Concentrations of TGF-β1 in the media were up to three times greater with the CS-GAG gels and were significantly (p < 0.05) greater than with PRF on days 3, 5, 7, 9, and 13. Furthermore, TGF-β1 elution was still substantial at day 13 with the use of the CS-GAG gels. Additional in vitro work is warranted to characterize TGF-β1 elution from this CS-GAG gel with human PRP and to determine whether the use of these CS-GAG gels can augment cartilage repair in vivo.
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