| 光谱学与光谱分析 |
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| SERS Spectra of Serum from Diabetic |
| HAN Hong-wen1, YAN Xun-ling1*, LI Shu-feng1, BAN Ge1, LI Ke1, ZHANG Xia1,YANG Ying2, BING Yan-xia2 |
1. School of Physical Science and Information Technology, Liaocheng University, Liaocheng 252059, China
2. Liaocheng People’s Hospital, Liaocheng 252000, China |
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Abstract The SERS spectra were measured from normal and the diabetic serum. In the diabetic serum, the band of amide II shifted to 1 585 cm-1 and the relative intensity increased 14%, while the relative intensity of 593 cm-1 which belongs to amide Ⅵ reduced 33%. For the protein side chain, the band at 1 368 cm-1 assigned to the “buried” tryptophan shifted to 1 365 cm-1 of the “exposed” and the relative intensity reduced 59%. The relative intensity of 635 cm-1 assigned to the gauche conformation of the C—S decrased 15% and the band at 725 cm-1 increased 58%. These indicate that the structure of the protein changed in the diabetic serum. The relative intensity at 1 449 cm-1 assigned to the lipids characteristic increased 58%. The relative intensity of the glucide characteristic at 1 331, 1 099 and 740 cm-1 increased 35%, 100% and 62%, respectively. So it is indicated that the content of lipids, glucide and protein increased in diabetic. These results may offer a powerful experimental basis for diabetes diagnosis and biochemistry mechanism study.
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Received: 2007-09-06
Accepted: 2007-12-16
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Corresponding Authors:
YAN Xun-ling
E-mail: yanxl207@lcu.edu.cn
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