Anemia is a blood abnormality that affects the quantity and quality of red blood cells in the human body. This sometimes banal sign spares no continent and no social stratum. This anomaly is generally appreciated thro...Anemia is a blood abnormality that affects the quantity and quality of red blood cells in the human body. This sometimes banal sign spares no continent and no social stratum. This anomaly is generally appreciated through biological analyzes of patients</span><span style="font-family:Verdana;">’</span><span style="font-family:Verdana;"> blood. These analyzes, which boil down to the knowledge of hemato-metric constants, cannot by themselves allow the characterization of certain forms of anemia in the sense that most anemia are related to the morphology and color of red blood cells. Our work in this paper is to perform blood smears on patients and perform a morphological and colorimetric analysis of red blood cells on these smears. This approach allowed us to highlight on each erythrocyte morphological and colorimetric descriptors to accurately identify the types of anemia by image processing methods. This identification is performed in an automated environment to allow pathologists to respond quickly to anemia-related emergencies and also improve the treatment to be conducted. This automation required the implementation of a new approach to electronic instrumentation and the acquisition of microscopic blood smear images for the automatic and rapid diagnosis of anemia.展开更多
目的建立一种能够提取陈旧阳性血膜疟原虫DNA的方法,为疟原虫基因溯源研究奠定基础。方法应用DNA抽提试剂盒(QIAampDNA Mini Kit)改良后提取41份吉氏染色镜检阳性血膜的疟原虫DNA,并与Chelex-100和Na2HPO4法进行比较。巢式PCR扩增疟原虫...目的建立一种能够提取陈旧阳性血膜疟原虫DNA的方法,为疟原虫基因溯源研究奠定基础。方法应用DNA抽提试剂盒(QIAampDNA Mini Kit)改良后提取41份吉氏染色镜检阳性血膜的疟原虫DNA,并与Chelex-100和Na2HPO4法进行比较。巢式PCR扩增疟原虫SSU r RNA基因片段,鉴定疟原虫虫种。PCR结果进行测序和序列比对,统计分析20世纪80年代与近10年血膜、不同血膜处理方法以及不同质量血膜的PCR阳性检出率差异。结果改良试剂盒法PCR结果总阳性检出率为70.7%(29/41)。80年代和近10年血膜PCR阳性检出率分别为78.6%(11/14)和66.7%(18/27),两组间差异无统计学意义(χ2=0.63,P>0.05)。经去油、脱色处理和未经处理组血膜的PCR阳性检出率分别为62.5%(15/24)和82.4%(14/17),两组间差异无统计学意义(χ2=1.89,P>0.05)。质量较好和较差血膜的PCR阳性检出率分别为93.3%(28/30)和9.1%(1/11),两组间差异有统计学意义(χ2=27.59,P<0.01)。测序结果表明扩增目的片段与预期结果一致。Chelex-100和Na2HPO4法PCR未能扩增出特异性目的条带。结论试剂盒(QIAampDNA Mini Kit)改良法提取80年代血膜疟原虫DNA可获得较高PCR阳性检出率,且染色剂和镜检油渍对血膜疟原虫DNA提取效果无明显影响。展开更多
文摘Anemia is a blood abnormality that affects the quantity and quality of red blood cells in the human body. This sometimes banal sign spares no continent and no social stratum. This anomaly is generally appreciated through biological analyzes of patients</span><span style="font-family:Verdana;">’</span><span style="font-family:Verdana;"> blood. These analyzes, which boil down to the knowledge of hemato-metric constants, cannot by themselves allow the characterization of certain forms of anemia in the sense that most anemia are related to the morphology and color of red blood cells. Our work in this paper is to perform blood smears on patients and perform a morphological and colorimetric analysis of red blood cells on these smears. This approach allowed us to highlight on each erythrocyte morphological and colorimetric descriptors to accurately identify the types of anemia by image processing methods. This identification is performed in an automated environment to allow pathologists to respond quickly to anemia-related emergencies and also improve the treatment to be conducted. This automation required the implementation of a new approach to electronic instrumentation and the acquisition of microscopic blood smear images for the automatic and rapid diagnosis of anemia.
文摘目的建立一种能够提取陈旧阳性血膜疟原虫DNA的方法,为疟原虫基因溯源研究奠定基础。方法应用DNA抽提试剂盒(QIAampDNA Mini Kit)改良后提取41份吉氏染色镜检阳性血膜的疟原虫DNA,并与Chelex-100和Na2HPO4法进行比较。巢式PCR扩增疟原虫SSU r RNA基因片段,鉴定疟原虫虫种。PCR结果进行测序和序列比对,统计分析20世纪80年代与近10年血膜、不同血膜处理方法以及不同质量血膜的PCR阳性检出率差异。结果改良试剂盒法PCR结果总阳性检出率为70.7%(29/41)。80年代和近10年血膜PCR阳性检出率分别为78.6%(11/14)和66.7%(18/27),两组间差异无统计学意义(χ2=0.63,P>0.05)。经去油、脱色处理和未经处理组血膜的PCR阳性检出率分别为62.5%(15/24)和82.4%(14/17),两组间差异无统计学意义(χ2=1.89,P>0.05)。质量较好和较差血膜的PCR阳性检出率分别为93.3%(28/30)和9.1%(1/11),两组间差异有统计学意义(χ2=27.59,P<0.01)。测序结果表明扩增目的片段与预期结果一致。Chelex-100和Na2HPO4法PCR未能扩增出特异性目的条带。结论试剂盒(QIAampDNA Mini Kit)改良法提取80年代血膜疟原虫DNA可获得较高PCR阳性检出率,且染色剂和镜检油渍对血膜疟原虫DNA提取效果无明显影响。
