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The Journal of Surgical Research 2011 Aug ; (2) :0
An experimental study on the effect of safflower yellow on tendon injury-repair in chickens.
Liu B,   Luo C,   Ouyang L,   Mu S,   Zhu Y,   Li K,   Zhan M,   Liu Z,   Jia Y,   Lei W  

Abstract
The present study sought to investigate pathologic changes in tendon, expression of basic fibroblast growth factor (bFGF) and collagen type I, and effects of safflower yellow (SY) on the process of tendon injury-repair.A tendon injury-repair model was used, and stereology, biomechanics, and immunohistochemistry were employed to assess the benefits of local application of SY for the repair. In this model, the flexor digitorum profundus muscle tendon of the third digit was transected bilaterally, and the transected ends sutured. Data were analyzed with SPSS ver. 10.0 software (SPSS Inc., Chicago, IL).The adhesion to surrounding tissues and tensile strength gradually increased after the injury and repair in control (no-SY) tendons, and were significantly greater by the sixth wk than any other time. In the SY tendons, adhesion was significantly lower, and tensile strength significantly higher than in no-SY tendons at the same post-injury-suture time points. An inflammatory reaction was observed in the injury-repair areas of the tendon by the end of first wk post-injury-suture, and reached its peak by the end of second wk. The inflammatory reaction was significantly less in SY tendons than in controls. Immunostaining for bFGF occurred in the tendon injury-repair areas by the end of first wk, and the number of bFGF positive cells reached a peak by the end of second wk, with a greater abundance in SY than control tendons from the second to sixth wk. Expression of collagen type I protein was observed in the injury-repair areas as well, coincident with bFGF, and was remarkably higher in SY than in controls.Tendon adhesion and tensile strength increased with time post-injury-suture repair, as did expression of bFGF and collagen type I protein in the injured area. SY enhanced expression of bFGF and collagen type I protein, enhanced the tensile strength of the injured tendon, and alleviated the injured tendon adhesion and inflammatory reaction. The results indicated that SY promoted the repair of injured tendon by up-regulating expression of bFGF and collagen type I protein.Copyright © 2011 Elsevier Inc. All rights reserved.

DHARA ID: D051192 Pubmed ID: 21601885


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