کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9770471 | 1501949 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synchrotron micro-FT-IR spectroscopic evaluation of normal paediatric human bone
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synchrotron micro-FT-IR spectroscopic evaluation of normal paediatric human bone Synchrotron micro-FT-IR spectroscopic evaluation of normal paediatric human bone](/preview/png/9770471.png)
چکیده انگلیسی
Cortical and cancellous normal bone biopsies were obtained intra-operatively from the inter-trochanteric region of an 11-year old boy and were studied with FT-IR spectroscopy. Undecalcified cortical bone sections, in which the micro-structure of the tissue had been preserved, were studied with synchrotron micro-FT-IR spectroscopy. The Amide I, II and III bands showed peaks near 1650, 1550 and 1240Â cmâ1, respectively. The v1, v2 and v3 phosphate and carbonate groups absorbed in the regions 1200-900 and 900-850Â cmâ1, respectively. Calculation of the ratio of the integrated areas under the v1, v3 phosphate and Amide I peaks, as a function of changing distance from the centre of the osteon, was used as an index of the relative mineral to matrix presence at each site of micro-FT-IR spectroscopic analysis. The ratio of the integrated areas under the v2 carbonate and v1, v3 phosphate peaks, as a function of changing distance from the centre of the osteon was used as an index of the relative carbonate to phosphate groups presence at each site of analysis. Both ratios were found to consistently increase with increasing distance from the centre of the osteon, for all osteons examined. In some fresh osteons, a peak near 1125Â cmâ1, characteristic of newly precipitated apatites (PO43â) was identified for the first time in the FT-IR spectra obtained from the inner lamellae of each Haversian system. This may be attributed to crystal effects of in vivo environments of fresh paediatric osteons.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 733, Issues 1â3, 3 January 2005, Pages 101-110
Journal: Journal of Molecular Structure - Volume 733, Issues 1â3, 3 January 2005, Pages 101-110
نویسندگان
Marianna Petra, Jane Anastassopoulou, Timoleon Theologis, Theophilos Theophanides,