Graded arrangement of collagen fibrils in the equine superficial digital flexor tendon.

Abstract:

:By using ultramorphological and biochemical methods, we analyzed the regional differences between the three parts of the equine superficial digital flexor tendon (SDFT), namely, the myotendinous junction (MTJ), middle metacarpal (mM), and osteotendinous junction (OTJ). Cross-sectional images showed unique distributions of collagen fibrils of varying diameters in each region. Small collagen fibrils (diameter <100 nm) were distributed predominantly in the MTJ region, and the OTJ region was relatively rich in large collagen fibrils (diameter >200 nm). In the mM region, the collagen fibrils were intermediately distributed between the MTJ and OTJ. The results indicate a graded arrangement of collagen fibrils in the tendon. Type V collagen was detected preferentially in the MTJ region. Since type V collagen is believed to be one of the collagens regulating collagen fibril formation, its possible functionality in the MTJ region in terms of fibril formation and fibril arrangement in the tendon has been discussed here.

journal_name

Connect Tissue Res

authors

Watanabe T,Imamura Y,Hosaka Y,Ueda H,Takehana K

doi

10.1080/03008200701692800

subject

Has Abstract

pub_date

2007-01-01 00:00:00

pages

332-7

issue

6

eissn

0300-8207

issn

1607-8438

pii

788421408

journal_volume

48

pub_type

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