Investigating Mechanisms of Collagen Thermal Denaturation by High Resolution Second-Harmonic Generation Imaging

Biophysical Journal | October 1, 2006| | Copyright

ABSTRACT

We apply the technique of second-harmonic generation (SHG) microscopy to obtain large area submicron resolution image of Type I collagen from rat tail tendon as it is heated from 40Â°C to 70Â°C for 0-180 min. The change in the collagen structure as reflected in its SHG image is observed at length scales from submicron to hundreds of microns. We observed that heating the tendon below the temperature of 54Â°C does not produce any change in the averaged SHG intensity. At the heating temperature of 54Â°C and above, we find that increasing the heating temperature and time leads to ...

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