Study on the gene expression profile in the bone tissue in primary osteoporosis with kidney-yang deficiency syndrome

目的通过检测原发性骨质疏松症不同中医证型患者骨组织基因表达谱的差异,探讨原发性骨质疏松症肾阳虚证相关基因的信息学特征。方法随机选择原发性骨质疏松; 症患者,中医辨证分型为肾阳虚证组3例,肾阴虚证组3例,无肾虚证组3例,并选择正常骨密度人群3例设为正常对照组。用人全基因组表达谱芯片检测4组人群; 骨组织基因表达谱,筛选共同的差异表达基因,并对这些差异表达基因进行基因通路等相关功能分析。结果肾阳虚证组与正常对照组、肾阴虚证组、无肾虚证组的差; 异表达基因分别为2631条、3976条、6184条;肾阳虚证组与其他3组比较共同的差异表达基因有1037条。这些差异基因参与补体与凝血级联反应、; Hedgehog、TGF-beta、细胞周期等22条信号通路。结论原发性骨质疏松症肾阳虚证的相关基因主要与免疫调节、TGF-beta、细胞周期等; 信号通路相关。Objective To investigate the characteristics of genes expression; profiles of primary osteoporosis with kidney yang deficiency through; analyzing the gene expression difference with gene micro-array. Methods; Patient with osteoporosis were rand omly divided into kidney-yang; deficiency group (n = 3),kidney-yin deficiency group (n = 3),non-kidney; deficiency group (n = 3),according to the syndrome differentiation of; traditional Chinese medicine. Another 3 people with normal BMD were; selected as normal control. Expression profiles of the bone tissue from; 4 groups were detected to screen differentiated expression genes.; Analysis of pathway and other function among these genes was conducted.; Results The number of differentiated expression genes in kidney-yang; deficiency group were 3976,6184,and 2631,compared to kidney-yin; deficiency,non-kidney deficiency,and normal control group,respectively.; The number of common differentially expressed genes were 1037. These; genes were involved in 22 pathways,including complement and coagulation; cascades,Hedgehog signaling pathway,TGF-beta signaling pathway,and cell; cycle. Conclusion Genes related to kidney-yang deficiency syndrome in; primary osteoporosis are mainly related to complement and coagulation; cascades,Hedgehog signaling pathway,TGF-beta signaling pathway,and cell; cycle.福建省科技厅省属公益类科研院所基本科研专项; 福建省自然科学基金项

Analysis outcomes and complications of twin pregnancy by in vitro fertilization-embryotransfer and intracytoplasmic sperm injection

目的比较体外受精-胚胎移植(IVf-ET)与单精子卵胞浆内注射(ICSI)受孕双胎妊娠围生期并发症及结局。方法回顾性分析我院2004年2月~2011年5月437例IVf-ET、ICSI受孕双胎的并发症(如胎膜早破、胎盘早剥、妊娠期高血压疾病、妊娠期肝内胆汁淤积症)及妊娠结局(流产发生率)。结果 IVf-ET受孕双胎组胎膜早破及胎盘早剥发生率高于ICSI受孕双胎组(χ2=5.93,6.01;P0.05);IVf-ET受孕双胎组较ICSI受孕双胎组流产率高,差异有统计学差异(χ2=5.09;P0.05);Ratio of abortion in IVF-ET group was significant higher than that in ICSI group(χ2=5.09;P<0.05).Conclusion:The risk of twin pregnancy by IVF-ET is higher than by ICSI,IVF-ET and ICSI maybe are not the main cause of pregnancy-induced hypertension and intrahepatic cholestasis of pregnancy

Study of the gene expression profile in the bone tissue with kidney yin deficiency syndromes in primary osteoporosis

目的通过检测原发性骨质疏松症患者骨组织基因表达谱的差异,探讨原发性骨质疏松症肾阴虚证相关基因的信息学特征。方法随机选择骨质疏松症患者,中医辨证分型为肾阴虚证组3例、肾阳虚证组3例、无肾虚证组3例,并选择正常骨密度人群3例设为正常对照组。用人全基因组表达谱芯片检测4组人群骨组织基因表达谱,筛选共同的差异表达基因,并对这些差异表达基因进行基因通路等相关功能分析。结果肾阴虚证组与正常对照组、肾阳虚证组、无肾虚证组的差异表达基因分别为2378、4026、4071条,肾阴虚证组与其他3组比较共同的差异表达基因有344条,这些差异基因参与免疫调节、矿物质吸收、激素合成、组氨酸代谢等11条信号通路。结论原发性骨质疏松症肾阴虚证的相关基因主要与免疫调节、激素合成、组氨酸代谢、矿物质吸收等信号通路相关。Objective To investigate the characteristics of genes expression profiles of kidney yin deficiency in primary osteoporosis by analyzing the difference of gene expression profiles in the bone tissues in patients w ith primary osteoporosis.Methods Osteoporotic patients were randomly selected.All the patients were divided into kidney yin deficiency group,kidney yang deficiency group,and non-kidney deficiency group according the syndrome differentiation of traditional Chinese medicine.Each group had 3 patients.Another 3 people w ith normal bone mineral density( BMD) w ere selected as normal control.Gene expression profiles of the bone tissues in all 4 groups w ere detected using the human genome-w ide expression profile chip.The differentiated expression genes w ere screened,and the analysis of the related functions of these genes including the pathw ays w as conducted.Results Compared w ith that in kidney yang deficiency group,non-kidney deficiency group,and normal control group,the number of differentiated expression genes in kidney yin deficiency group w as 2378,4026,and 4071,respectively.Compared w ith that in these 3 groups,the number of common differentiated expression gene in kidney yin deficiency group w as344.These genes w ere involved in 11 pathw ays,including immunoregulation,mineral absorption,hormone synthesis,and histidine metabolism.Conclusion Related genes of kidney yin deficiency syndromes in primary osteoporosis are mainly related to the signal pathw ays such as immunoregulation,hormone synthesis,histidine metabolism and mineral absorption.国家自然科学基金(81173280); 福建省科技厅省属公益类科研院所基本科研专项(2011R1038-5); 福建省卫生厅创新课题(2011-CX-30); 福建省卫生厅青年基金项目(2010-1-31

Imposex of Thais clavigera and Cantharus cecillei in the coastal waters of Xiamen

海产腹足类性畸变以其对有机锡的敏感性、特异性和不可逆性而成为海洋有机锡污染的理想指示种。调查研究了厦门海域岩相海岸带疣荔枝螺(THAIS ClAVIgErA)和甲虫螺(CAnTHAruS CECIllEI)的性畸变情况,通过生物学指标IOI(性畸变率)、rPSI(相对阴茎发展指数)、VdSI(输精管发展指数)及SrI(性比指数)综合评价其性畸变发展程度,间接指示厦门周边海域的有机锡污染程度。研究结果发现,在采集疣荔枝螺的17个站点中有5个站点种群性畸变率为100%,其中宝珠屿种群性畸变程度最为严重,VdSI达4,采集甲虫螺的4个站点的种群性畸变率均为100%。性畸变程度较严重的种群普遍集中于厦门西港,并且表现出由港内到港外逐渐减轻的趋势,而白城、会展中心和大嶝岛等位于开阔的厦门东海域的种群性畸变程度最轻,与往年厦门西海域有机锡污染监测数据相比一致,体现出性畸变程度与有机锡污染程度及海港码头远近之间的相互关系。The degree of imposex,i.e.the imposition of male characteristics onto females,in neogastropods can be used as a sensitive and accurate biomarker to evaluate organotin contamination in coastal marine environment.Now,the imposex status in females of Thais clavigera and Cantharus cecillei in 17 sites was investigated to evaluate the organotin contamination along Xiamen Bay during 2006 and 2007.The four indices including incidence of imposex(IOI),relative penis size index(RPSI),vas deferens sequences index(VDSI) and sex ratio index(SRI) were used comprehensively to assess the imposex status in order to ascertain the extent of organotin bioavailability in Xiamen Bay.Based on this research,T.clavigera in 5 sites and C.cecillei in all survey sites exhibited the IOI of 100%.At Bao ZhuYu Islet,the imposex level was the most serious with maximum VDSI value of 4.In general,the imposex level decreased from the inner to the outer of Xiamen Western Harbour,and the populations in the open Xiamen Eastern Waters including Bai Cheng,Convention and Exhibiton Center and Dadeng Island showed a lower imposex level.These results were accordant with the concentrations of organotins in 2005.The imposex degree also increased with increasing organotin contamination and decreasing distance from shipping facilities.国家自然科学基金资助项目(40476048);厦门大学近海海洋环境科学国家重点实验室开放基金资助项目;厦门大学新世纪优秀人才计划基金资助项

Establishment of a method to quantitatively detect FLT3 internal tandem duplication in acute myeloid leukemia with denaturing high-performance liquid chromatography

目的:建立一种应用变性高效液相色谱技术(dHPlC)相对定量检测急性髓细胞白血病(AMl)患者fMS样酪氨酸激酶3(flT3)基因的内部串联重复(ITd)突变的方法。方法:根据flT3-ITd突变基因多位于14外显子而设计引物,用聚合酶链反应(PCr)方法特异性扩增121例AMl患者flT3-ITd突变基因,再用dH-PlC技术相对定量检测flT3-ITd等位基因突变的情况;与毛细管电泳法(CE)检测突变的结果对比进行该方法的有效性检验;最后与121例样品PCr扩增产物的测序结果进行对比。结果:经dHPlC分析后均能得到特征性的洗脱峰。121例样本中检测到flT3-ITd突变阳性的样本13例,总阳性率为10.7%,阳性突变等位基因的比例不一,分布范围中位数为34.5%(11.4%-80.2%),为21-87 bP单个插入片段。阳性率和突变比例与CE方法检测结果相比较均无显著差异(P>0.05),并与121例样本flT3-ITd扩增PCr产物基因测序结果一致。结论:成功建立了一种应用dHPlC相对定量检测AMl患者flT3-ITd基因突变的方法。AIM: To establish a relatively-quantitative method to detect the internal tandem duplication(ITD) mutation of Fms-like tyrosine kinase 3(FLT3)gene in acute myeloid leukemia(AML) patients using denaturing high-performance liquid chromatography(DHPLC).METHODS: According to the fact that much more FLT3-ITD mutations are located in exon 14,we designed the primers,and use the method of polymerase chain reaction(PCR) to specifically amplify FLT3-ITD mutation gene in 121 cases of AML,and relatively quantified the situation of mutant allelic gene of FLT3-ITD by the method of DHPLC.The effectiveness of DHPLC was verified by the method of capillary electrophoresis(CE).The sequenced results from PCR amplified products of 121 samples were compared.RESULTS: A characteristic of elution peak was detected by DHPLC with 10.7% overall positive rate(13/121) and varied in the proportion of mutant alleles,with a single duplicated insert fragment from 21 bp to 87 bp.The median range of mutant alleles was 34.5%(11.4%-80.2%).No significant difference of the positive rates and mutation proportions between the results with DHPLC and the results with CE method was observed.The results of FLT3-ITD mutant gene of 121 samples were consistent with the results using sequencing method.CONCLUSION: A relatively-quantitative method to analyze AML patients with FLT3-ITD mutation by DHPLC is successfully established

某铝土矿新型组合捕收剂试验研究

采用自行研制的新型ZF组合捕收剂,对主要成分为高岭石和一水硬铝石,A l2O3品位为63.16%,铝硅比为5.32的一种山西铝土矿进行正浮选脱硅试验。在磨矿细度-0.074 mm占84.51%,碳酸钠用量3 500 g/t,硅酸钠用量113 g/t,ZF捕收剂用量800 g/t的条件下,通过1次粗选,1次精选,2次扫选,获得了精矿A12O3品位68.92%,A12O3回收率81.05%,铝硅比9.16的较好指标

Attosecond x-ray probing of laser-induced electron rescattering in atoms

We propose an attosecond time-domain spectroscopy to study laser-induced electron rescattering in atoms by using single photoionization with an attosecond x-ray pulse. From the time-frequency analysis of the time-domain signal, we obtained simultaneously the subcycle time and energy information of the rescattering electron wave packet during the interaction of a helium-like atom with a strong laser field. The obtained time and energy distributions nicely agree with the electron rescattering picture from the analysis based on the high-order harmonic response by the dipole acceleration and classical trajectory calculations. Contributions and interference from multiple rescattering can be unambiguously identified in the time and energy distributions of rescattering electrons. Since the observable of x-ray single photoionization yield is proportional to the electron density near the nucleus, the proposed time-domain spectroscopy can in general be applied to studies of other light-induced linear and nonlinear polarization effects in atoms and molecules

Spatial distribution and influencing factors of soil organic carbon among different climate types in Sichuan,China

为探讨不同气候类型下,草地土壤有机碳含量的分布特征及其影响因素,以四川省广元市、雅安市和凉山州为研究地区,对区域内分层土壤(0-10、10-20、20-30 cm)有机碳含量、氮含量,根系碳含量、土壤pH值、土壤容重、草地物种组成和盖度等进行了分析,探讨不同气候类型下引起土壤有机碳含量变化的主要原因。结果表明:(1)3个地区草地总土壤有机碳含量差异显著,量差依次为雅安>凉山>广元,均出现土壤碳表聚现象,并随深度增加而递减;(2)雅安草地不同分层土壤有机碳含量占比与广元和凉山具有明显差异,其中雅安0-10 cm土壤有机碳含量占比显著降低,而10-20 cm占比显著升高,土壤有机碳随土层深度增加其降幅与后两者相比略微平缓;(3)广元10-20 cm土壤有机碳含量与草地丰富度指数正相关,20-30 cm土壤有机碳含量与Shannon-Winner指数负相关,而分层土壤有机碳则与土壤pH值和土壤氮含量正相关,雅安和凉山分层土壤有机碳分别与土壤pH值和土壤氮含量正相关;(4)主成分分析显示,影响3个地区草地土壤有机碳总量变化的主要因素是气候因素,次要因素是植被因素

高铝粉煤灰铝硅化合物在稀碱溶液中的浸出行为

研究了循环流化床锅炉高铝粉煤灰中铝和硅在NaOH稀溶液中的浸出行为,在对高铝粉煤灰的组成、物相等物化性质研究的基础上,考察了碱浓度、反应温度和反应时间等工艺参数对粉煤灰中铝硅反应性能的影响.结果表明,粉煤灰为大小不一的不规则颗粒,疏松多孔,具有较高的反应活性;在温和条件下,碱溶液中铝硅溶出规律存在较大差异,在95℃、碱浓度为150g/L、反应90min时二者差异最大,SiO2溶出率可达23.15%,而Al2O3的溶出率仅为1.68%,粉煤灰的铝硅比可由0.78提高到0.99