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Optics Letters

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  • Vol. 30, Iss. 6 — Mar. 15, 2005
  • pp: 622–624

Monitoring the thermally induced structural transitions of collagen by use of second-harmonic generation microscopy

Sung-Jan Lin, Chih-Yuan Hsiao, Yen Sun, Wen Lo, Wei-Chou Lin, Gwo-Jen Jan, Shiou-Hwa Jee, and Chen-Yuan Dong  »View Author Affiliations


Optics Letters, Vol. 30, Issue 6, pp. 622-624 (2005)
http://dx.doi.org/10.1364/OL.30.000622


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Abstract

The thermal disruption of collagen I in rat tail tendon is investigated with second-harmonic generation (SHG) microscopy. We investigate its effects on SHG images and intensity in the temperature range 25°-60°C. We find that the SHG signal decreases rapidly starting at 45°C. However, SHG imaging reveals that breakage of collagen fibers is not evident until 57°C and worsens with increasing temperature. At 57°C, structures of both molten and fibrous collagen exist, and the disruption of collagen appears to be complete at 60°C. Our results suggest that, in addition to intensity measurement, SHG imaging is necessary for monitoring details of thermally induced changes in collagen structures in biomedical applications.

© 2005 Optical Society of America

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(180.0180) Microscopy : Microscopy
(190.4160) Nonlinear optics : Multiharmonic generation

Citation
Sung-Jan Lin, Chih-Yuan Hsiao, Yen Sun, Wen Lo, Wei-Chou Lin, Gwo-Jen Jan, Shiou-Hwa Jee, and Chen-Yuan Dong, "Monitoring the thermally induced structural transitions of collagen by use of second-harmonic generation microscopy," Opt. Lett. 30, 622-624 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-6-622


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