Regulation of tendon differentiation by scleraxis distinguishes force-transmitting tendons from muscle-anchoring tendons

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Regulation of tendon differentiation by scleraxis distinguishes force-transmitting tendons from muscle-anchoring tendons.

The scleraxis (Scx) gene, encoding a bHLH transcription factor, is expressed in the progenitors and cells of all tendon tissues. To determine Scx function, we produced a mutant null allele. Scx-/- mice were viable, but showed severe tendon defects, which manifested in a drastically limited use of all paws and back muscles and a complete inability to move the tail. Interestingly, although the di...

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Mechanical force modulates scleraxis expression in bioartificial tendons.

Following tendon injury, cartilage, bone and fat metaplasia are often observed, making the optimization of tenocyte differentiation an important clinical goal. In this study we examined the effect of static and cyclic mechanical loading on the expression of genes which play a role in tenocyte differentiation and function, namely scleraxis (Scx) and Type I collagen (Col1a1), and determined the e...

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Physiological loading of tendons induces scleraxis expression in epitenon fibroblasts.

Scleraxis is a basic helix-loop-helix transcription factor that plays a central role in promoting fibroblast proliferation and matrix synthesis during the embryonic development of tendons. Mice with a targeted inactivation of scleraxis (Scx(-/-)) fail to properly form limb tendons, but the role that scleraxis has in regulating the growth and adaptation of tendons of adult organisms is unknown. ...

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Usage of synthetic tendons in tendon reconstruction

Damaged tendons or loss of tendon poses a major surgical reconstructive problem. The conventional method is harvest donor tendons from palmaris longus, plantaris or tensor fasciae lata. Synthetic tendons has been used in Achilles tendon repair with studies on equine subjects. We present successful use in three patients with extensive tendon loss secondary to polytrauma. Additionally we have con...

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ژورنال

عنوان ژورنال: Development

سال: 2007

ISSN: 1477-9129,0950-1991

DOI: 10.1242/dev.001933