Open Access
1 September 2010 Pulse-modulated second harmonic imaging microscope quantitatively demonstrates marked increase of collagen in tumor after chemotherapy
Anju M. Raja, Shuoyu Xu, Wanxin Sun, Jianbiao Zhou, Dean C. S. Tai, Chien-Shing Chen, Jagath C. Rajapakse, Peter T. C. So, Hanry Yu
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Abstract
Pulse-modulated second harmonic imaging microscopes (PM-SHIMs) exhibit improved signal-to-noise ratio (SNR) over conventional SHIMs on sensitive imaging and quantification of weak collagen signals inside tissues. We quantify the spatial distribution of sparse collagen inside a xenograft model of human acute myeloid leukemia (AML) tumor specimens treated with a new drug against receptor tyrosine kinase (ABT-869), and observe a significant increase in collagen area percentage, collagen fiber length, fiber width, and fiber number after chemotherapy. This finding reveals new insights into tumor responses to chemotherapy and suggests caution in developing new drugs and therapeutic regimens against cancers.
©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)
Anju M. Raja, Shuoyu Xu, Wanxin Sun, Jianbiao Zhou, Dean C. S. Tai, Chien-Shing Chen, Jagath C. Rajapakse, Peter T. C. So, and Hanry Yu "Pulse-modulated second harmonic imaging microscope quantitatively demonstrates marked increase of collagen in tumor after chemotherapy," Journal of Biomedical Optics 15(5), 056016 (1 September 2010). https://doi.org/10.1117/1.3497565
Published: 1 September 2010
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Cited by 12 scholarly publications.
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KEYWORDS
Collagen

Tumors

Scanning helium ion microscopy

Microscopes

Second-harmonic generation

Signal to noise ratio

Visualization

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