Abstract
Collagen degradation caused by IR laser irradiation in ligament tissues was studied by thermal analysis and cross-polarization optical coherent tomography. It was found that, at 60°C, laser-induced modification of the quasi-crystalline packing of ordered collagen fibers occurred without the helix-coil molecular conformation transition. It was shown that, for uniaxial tension of ligaments, laser irradiation caused serious distortions in the structure of collagen and increased the fraction of macromolecules in the random coil state. It was assumed that the thermomechanical effect of laser treatment during laser heating played an important role.
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Original Russian Text © O.L. Zakharkina, N.Yu. Ignat’eva, R.R. Iksanov, V.A. Kamenskii, E.N. Sobol’, V.V. Lunin, 2009, published in Zhurnal Fizicheskoi Khimii, 2009, Vol. 83, No. 2, pp. 383–390.
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Zakharkina, O.L., Ignat’eva, N.Y., Iksanov, R.R. et al. The effect of uniaxial tension on the stability of collagen fibers under the conditions of nonuniform laser heating. Russ. J. Phys. Chem. 83, 311–317 (2009). https://doi.org/10.1134/S0036024409020290
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DOI: https://doi.org/10.1134/S0036024409020290