| Quantitative estimates of vascularity in a collagen-based cell scaffold containing basic fibroblast growth factor by noninvasive near-infrared spectroscopy for regenerative medicine. | |
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MedLine Citation:
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PMID: 18588439 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Successful tissue regeneration requires cells with high proliferative and differentiation potentials as well as an environment that promotes regeneration. Since cell scaffolds and growth factors provide such an environment and also induce angiogenesis and cell proliferation, we examined the hemoglobin content of implanted collagen-based cell scaffolds containing the angiogenic factor, basic fibroblast growth factor (bFGF), in vivo with noninvasive near infrared spectroscopy (NIRS). BACKGROUND DATA: Angiogenesis within cell scaffolds is typically determined by histological examination for endothelial cell markers. Unfortunately, this approach requires removal of tissue and scaffold invasively. MATERIALS AND METHODS: We compared the hemoglobin content of implanted collagen-based cell scaffold as measured by NIRS to the hemoglobin content measured with a conventional invasive hemoglobin assay. Noninvasive NIRS recordings were performed with a custom-built near-infrared spectrometer using light guide-coupled reflectance measurements. Results: NIRS recordings revealed that absorbance increased after implantation of collagen scaffolds containing bFGF. This result correlated (R2 = 0.93) with a subsequent conventional hemoglobin assay. CONCLUSION: The NIRS technique provides a noninvasive method for measuring the degree of vascularization in cell scaffolds. This technique may be advantageous for monitoring angiogenesis within different cell scaffolds, a prerequisite for effective tissue regeneration. |
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Authors:
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Toshihiro Kushibiki; Atsuhiro Saito; Seiichro Hayashi; Katsunori Ishii; Yoshiki Sawa; Kunio Awazu |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Photomedicine and laser surgery Volume: 26 ISSN: 1549-5418 ISO Abbreviation: - Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-06-30 Completed Date: 2008-09-11 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101222340 Medline TA: Photomed Laser Surg Country: United States |
Other Details:
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Languages: eng Pagination: 247-50 Citation Subset: IM |
Affiliation:
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Frontier Research Base for Global Young Researchers, Frontier Research Center, Graduate School of Engineering, Osaka, Japan. kushibiki@see.eng.osaka-u.ac.jp |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Collagen Fibroblast Growth Factor 2 / analysis* Guided Tissue Regeneration Hemoglobins / analysis Mice Mice, Inbred Strains Neovascularization, Physiologic Spectroscopy, Near-Infrared* Tissue Scaffolds* |
| Chemical | |
Reg. No./Substance:
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0/Hemoglobins; 103107-01-3/Fibroblast Growth Factor 2; 9007-34-5/Collagen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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