目的探讨喉鳞状细胞癌变过程中微卫星DNA等位基因不平衡性的特征及其意义。方法选取染色体3P、9P和17P上6个多态性微卫星位点D3S1234、D9S171、D9S1748、D9S162、INFA和D17S796,利用聚合酶链式反应-简单序列长度多态性-银染技术,对49例...目的探讨喉鳞状细胞癌变过程中微卫星DNA等位基因不平衡性的特征及其意义。方法选取染色体3P、9P和17P上6个多态性微卫星位点D3S1234、D9S171、D9S1748、D9S162、INFA和D17S796,利用聚合酶链式反应-简单序列长度多态性-银染技术,对49例喉癌癌前病变和喉癌组织进行等位基因不平衡分析,统计杂合性缺失(loss of heterozygosi-ty,LOH)和微卫星不稳定性(microsatellite instability,MSI)的发生率及其与临床病理特征的相关性。结果6个微卫星标记物LOH和MSI发生率分别为:喉癌癌前病变中单纯过度增生为3.7%和14.8%,轻度不典型增生为10.8%和21.6%,重度不典型增生为26.0%和23.3%;喉鳞状细胞癌为38.7%和21.3%。其中LOH的总检出率在不同病理组间有统计学意义(χ2=17.686,P=0.000),而MSI的检出率统计学意义(χ2=0.314,P>0.05)。不同病理组间D9S171和D9S162单个位点LOH检出率有统计学意义(P=0.022,P=0.025)。在癌前病变早期MSI发生率高于LOH。结论等位基因不平衡可能参与喉癌发生发展,微卫星分析法为喉癌癌前病变的早期诊断提供新的途径。展开更多
[Objective]The aim was to discuss elimination mechanism and equilibrium model about complete linkage gene of panmixis based on fitness.[Method]A mathematical model that gsgenerational evalution of frequency of panmixi...[Objective]The aim was to discuss elimination mechanism and equilibrium model about complete linkage gene of panmixis based on fitness.[Method]A mathematical model that gsgenerational evalution of frequency of panmixis two pairs of complete linkage gene under difference fitness was built by using difference equations to study elimination mechanism and genetic equilibrium state of panncticcoinplete linkage gene.[Result]The panmixis is different from Hardy-Weinberg Equilibrium which reached the equilibrium just by one generation.A method that by using linear equation to calculate the frequency of four gametes and the fitnessed of panmixis was established after detormining is the fitness of 10 genotypes the necessary and sufficient condition of the panmixis to reach balance.[Conclusion]The method is valuable for reference on linkage disequilibrium and hitchhiking effect study.展开更多
Taking AuCu3-type sublattice system as an example, three discoveries have been presented: First, the third barrier hindering the progress in metal materials science is that researchers have got used to recognizing exp...Taking AuCu3-type sublattice system as an example, three discoveries have been presented: First, the third barrier hindering the progress in metal materials science is that researchers have got used to recognizing experimental phenomena of alloy phase transitions during extremely slow variation in temperature by equilibrium thinking mode and then taking erroneous knowledge of experimental phenomena as selected information for establishing Gibbs energy function and so-called equilibrium phase diagram. Second, the equilibrium holographic network phase diagrams of AuCu3-type sublattice system may be used to describe systematic correlativity of the composition?temperature-dependent alloy gene arranging structures and complete thermodynamic properties, and to be a standard for studying experimental subequilibrium order-disorder transition. Third, the equilibrium transition of each alloy is a homogeneous single-phase rather than a heterogeneous two-phase, and there exists a single-phase boundary curve without two-phase region of the ordered and disordered phases; the composition and temperature of the top point on the phase-boundary curve are far away from the ones of the critical point of the AuCu3 compound.展开更多
Taking Au3Cu-type sublattice system as an example, three discoveries have been presented. First, the fourth barrier to hinder the progress of metal materials science is that today’s researchers do not understand that...Taking Au3Cu-type sublattice system as an example, three discoveries have been presented. First, the fourth barrier to hinder the progress of metal materials science is that today’s researchers do not understand that the Gibbs energy function of an alloy phase should be derived from Gibbs energy partition function constructed of alloy gene sequence and their Gibbs energy sequence. Second, the six rules for establishing alloy gene Gibbs energy partition function have been discovered, and it has been specially proved that the probabilities of structure units occupied at the Gibbs energy levels in the degeneracy factor for calculating configuration entropy should be degenerated as ones of component atoms occupied at the lattice points. Third, the main characteristics unexpected by today’s researchers are as follows. There exists a single-phase boundary curve without two-phase region coexisting by the ordered and disordered phases. The composition and temperature of the top point on the phase-boundary curve are far away from those of the critical point of the Au3Cu compound; At 0 K, the composition of the lowest point on the composition-dependent Gibbs energy curve is notably deviated from that of the Au3Cu compounds. The theoretical limit composition range of long range ordered Au3Cu-type alloys is determined by the first jumping order degree.展开更多
文摘目的探讨喉鳞状细胞癌变过程中微卫星DNA等位基因不平衡性的特征及其意义。方法选取染色体3P、9P和17P上6个多态性微卫星位点D3S1234、D9S171、D9S1748、D9S162、INFA和D17S796,利用聚合酶链式反应-简单序列长度多态性-银染技术,对49例喉癌癌前病变和喉癌组织进行等位基因不平衡分析,统计杂合性缺失(loss of heterozygosi-ty,LOH)和微卫星不稳定性(microsatellite instability,MSI)的发生率及其与临床病理特征的相关性。结果6个微卫星标记物LOH和MSI发生率分别为:喉癌癌前病变中单纯过度增生为3.7%和14.8%,轻度不典型增生为10.8%和21.6%,重度不典型增生为26.0%和23.3%;喉鳞状细胞癌为38.7%和21.3%。其中LOH的总检出率在不同病理组间有统计学意义(χ2=17.686,P=0.000),而MSI的检出率统计学意义(χ2=0.314,P>0.05)。不同病理组间D9S171和D9S162单个位点LOH检出率有统计学意义(P=0.022,P=0.025)。在癌前病变早期MSI发生率高于LOH。结论等位基因不平衡可能参与喉癌发生发展,微卫星分析法为喉癌癌前病变的早期诊断提供新的途径。
基金Supported by Scientific Research Grant of the Education Department of Guangxi Zhuang Autonomous Region(200807MS065)Elite Support Fund for Universities in Guangxi Zhuang Autonomous Region~~
文摘[Objective]The aim was to discuss elimination mechanism and equilibrium model about complete linkage gene of panmixis based on fitness.[Method]A mathematical model that gsgenerational evalution of frequency of panmixis two pairs of complete linkage gene under difference fitness was built by using difference equations to study elimination mechanism and genetic equilibrium state of panncticcoinplete linkage gene.[Result]The panmixis is different from Hardy-Weinberg Equilibrium which reached the equilibrium just by one generation.A method that by using linear equation to calculate the frequency of four gametes and the fitnessed of panmixis was established after detormining is the fitness of 10 genotypes the necessary and sufficient condition of the panmixis to reach balance.[Conclusion]The method is valuable for reference on linkage disequilibrium and hitchhiking effect study.
基金Project(51071181)supported by the National Natural Science Foundation of ChinaProject(2013FJ4043)supported by the Natural Science Foundation of Hunan Province,China
文摘Taking AuCu3-type sublattice system as an example, three discoveries have been presented: First, the third barrier hindering the progress in metal materials science is that researchers have got used to recognizing experimental phenomena of alloy phase transitions during extremely slow variation in temperature by equilibrium thinking mode and then taking erroneous knowledge of experimental phenomena as selected information for establishing Gibbs energy function and so-called equilibrium phase diagram. Second, the equilibrium holographic network phase diagrams of AuCu3-type sublattice system may be used to describe systematic correlativity of the composition?temperature-dependent alloy gene arranging structures and complete thermodynamic properties, and to be a standard for studying experimental subequilibrium order-disorder transition. Third, the equilibrium transition of each alloy is a homogeneous single-phase rather than a heterogeneous two-phase, and there exists a single-phase boundary curve without two-phase region of the ordered and disordered phases; the composition and temperature of the top point on the phase-boundary curve are far away from the ones of the critical point of the AuCu3 compound.
基金Project(51071181)supported by the National Natural Science Foundation of ChinaProject(2013FJ4043)supported by the Natural Science Foundation of Hunan Province,China
文摘Taking Au3Cu-type sublattice system as an example, three discoveries have been presented. First, the fourth barrier to hinder the progress of metal materials science is that today’s researchers do not understand that the Gibbs energy function of an alloy phase should be derived from Gibbs energy partition function constructed of alloy gene sequence and their Gibbs energy sequence. Second, the six rules for establishing alloy gene Gibbs energy partition function have been discovered, and it has been specially proved that the probabilities of structure units occupied at the Gibbs energy levels in the degeneracy factor for calculating configuration entropy should be degenerated as ones of component atoms occupied at the lattice points. Third, the main characteristics unexpected by today’s researchers are as follows. There exists a single-phase boundary curve without two-phase region coexisting by the ordered and disordered phases. The composition and temperature of the top point on the phase-boundary curve are far away from those of the critical point of the Au3Cu compound; At 0 K, the composition of the lowest point on the composition-dependent Gibbs energy curve is notably deviated from that of the Au3Cu compounds. The theoretical limit composition range of long range ordered Au3Cu-type alloys is determined by the first jumping order degree.
