280例患病生儿全血中14种元素变化的研究

于１９９７年６月－１９９８年１０月间对２８０例患４种常见病新生儿全血中１４种元素进行了检测,并与正常足月、顺产新生儿１００例对比。结果表明：（１）Ｇ－６ＰＤ缺陷引起的高胆红素血症组与正常组对照,男、女Ｆｅ、Ｚｎ均低于正常组;     

痤疮患者血清锌水平及加锌治疗效果

测定了60例寻常痤疮患者和60例健康正常人血清锌浓度,结果表明,寻常痤疮患者血清中锌的浓度明显低于正常人水平。对40例寻常痤疮患者在按常规治疗的同时给予口服硫酸锌治疗一个月,加锌治疗组的治疗有效率为90％,明显高于仅按常规治疗组的有效率（75％）。     

尿毒症中分子毒物的分离鉴定

自从1972年Babb等提出中分子假说以来,人们做了很多努力去分离鉴定尿毒症中分子毒性物质．Chu等通过凝胶色谱和离子交换色谱发现来自尿毒症患者血清和正常人尿液的A-3亚峰物质均含有6种成分,分子量分别为839．69,873．69,1007．94,1106．67,1680．28和2015．16．该组分在病人尿液中明显缺失,说明A-3亚峰物质可能是正常人通过尿液排出,肾衰病人难以通过尿液排出,导致在体内积累的物质;     

中国营养平衡米及其配膳微量元素NSF研究

报道了营养平衡米和普通籼米的微量元素含量和ＮＳＦ值。并将营养平衡米配膳和籼米配膳的ＮＳＦ值进行了比较。结果表明,每５００ｇ营养平衡米Ｚｎ、Ｃｕ、Ｆｅ、Ｍｎ、Ｓｅ的含量分别为１９．１０、３．７５、８．６５、１３．２５、０．０７ｍｇ,高于同量籼米的８．００、１．５０、２．５０、５．１０、０．０３ｍｇ;ＮＳＦ值分别为１２７、１８８、４８、５３０、１４０,高于籼米的５３、７５、１４、２０４、６０。营养平衡     

中国小型猪心肌梗死模型的比较蛋白质组学研究

利用二维电泳(2DE)分离中国小型猪心肌梗死模型的正常与梗死心肌组织的蛋白提取液, 采用 PDQuest 软件对比分析了两种心肌组织在pH=5─8范围内的2DE谱图. 正常心肌组织检出851个蛋白点, 梗死组织检出1 032个蛋白点. 发现13个蛋白质点只在小型猪的正常心肌组织中表达, 而有14个蛋白质点只在梗死心肌组织中表达. 另外, 还有49个蛋白点在两种组织中表达量上有显著性变化(P<0.05), 选择进行质谱分析其中11个蛋白点, 成功地鉴定出7种蛋白, 蛋白功能分析结果表明, 这些蛋白的差异表达与心肌梗死过程相关.     

正常与癌症肺组织的傅里叶变换红外光谱差异的研究

傅里叶变换红外(FTIR)光谱可以在分子水平上研究细胞和组织等复杂的生命体系,提供分子结构和组成的信息.我们发展了一种用于直接测定肿瘤及正常组织红外光谱的方法,对16例肺癌及其癌旁正常组织进行了测定.结果表明,对于正常和癌变的肺组织,FTIR光谱中存在显著差异,相关谱带的相对峰高比可以表征这些差异.因此,傅里叶变换红外光谱可以用来诊断癌症与正常的肺组织,有望成为肿瘤快速诊断的新方法.     

Effect of normal variations on disease classification of Raman spectra from cervical tissue

In this paper, we examine how variations in normal tissue can influence disease classification of Raman spectra. Raman spectra from normal areas may be affected by previous disease or proximity to areas of dysplasia. Spectra were acquired in vivo from 172 patients and classified into five tissue categories: true normal (no history of disease), previous disease normal (history of disease, current normal diagnosis), adjacent normal (disease on cervix, spectra acquired from visually normal area), low grade, and high grade. Taking into account the various "normal" states of the tissue before statistical analysis led to a disease classification accuracy of 97%. These results indicate that abnormal changes significantly affect Raman spectra, even when areas are histopathologically normal. The sensitivity of Raman spectroscopy to subtle biochemical differences must be considered in order to successfully implement it in a clinical setting for diagnosing cervical dysplasia and cancer.     

Effect of 1,4‐dioxane on synthesis of macroporous poly(N‐isopropylacrylamide) hydrogels

Thermosensitive Poly(N‐isopropylacrylamide) (PNIPA) hydrogels were synthesized by a free radical solution polymerization in three different ways. Normal hydrogels were prepared at room temperature and normal cryogels were prepared at subzero temperature. A cation surfactant dodecyl dimethyl benzyl ammonium bromide (DDBAB) was used during preparation of novel cryogels in freezing state. The response rates of normal hydrogels were very slow, whereas the rates of both normal and novel cryogels were very fast because of the macroporous structure of the cryogels. Mixed solvents which were composed of pure water and 1,4‐dioxane at various concentrations were used instead of pure water during the polymerization. The effects of the mixed solvent on morphology, swelling ratio, and deswelling/reswelling kinetics of the three kinds of hydrogels were investigated. For normal hydrogels and normal cryogels, there was no remarkable difference no matter the mixed solvent or pure water was used. However, the properties of the resulted novel cryogels were much different with the concentration of dioxane. Finally, the resulted hydrogels were used for concentrating emulsified paraffin. The different separation performance was attributed to the different structure of gel matrix. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 6594–6603, 2008     

应用小波特征提取肺癌组织FTIR的支持向量机分类方法研究

提出了一种新的基于傅里叶变换红外光谱(Fourier Transform Infrared Spectroscopy, FTIR)的小波特征提取与支持向量机(SVM)分类方法以提高FTIR对早期肺癌的诊断准确率. 对肺正常组织、早期肺癌及进展期肺癌组织的FTIR, 利用连续小波(CW)多分辨率分析法提取9个特征量, 支持向量机把其分为正常组与非正常组(包括早期肺癌和进展期肺癌), 对正常组织、早期肺癌和进展期肺癌的识别, 多项式核函数和径向基函数的识别准确率最高. 多项式核函数对正常组织、早期肺癌和进展期肺癌的识别准确率分别为100%, 95%及100%; 径向基函数分别为100%, 95%和100%. 实验结果表明FTIR-CW-SVM模式分类方法对正常肺癌组织、早期肺癌及进展肺癌的识别具有较好的可行性.     

Molecular dynamics simulation study on zwitterionic structure to maintain the normal conformations of Glutathione

Molecular dynamics simulations were applied to normal conformational Glutathione (GSH) and GSH over zwitterionic and hydrophobic surfaces respectively. Conformational analysis of GSH during the simulation time on RMSD, conformational flexibility and dihedral distribution were performed. The re- sults showed that zwitterionic structure maintains the normal conformations of GSH to a better extent, which should be a first good proof of the hypothesis of "maintain of normal structure".