采用实时荧光定量PCR(Real Time PCR)方法,对不同生长阶段的西藏小型猪和军牧一号白猪的肝脏、脾脏、肾脏及肌肉组织中胰岛素样生长因子结合蛋白6(IGFBP-6)基因mRNA表达水平进行检测,并利用t检验,对相同生长阶段的各组织2个品种猪之间...采用实时荧光定量PCR(Real Time PCR)方法,对不同生长阶段的西藏小型猪和军牧一号白猪的肝脏、脾脏、肾脏及肌肉组织中胰岛素样生长因子结合蛋白6(IGFBP-6)基因mRNA表达水平进行检测,并利用t检验,对相同生长阶段的各组织2个品种猪之间的表达水平进行比较分析。结果表明:西藏小型猪与军牧一号白猪IGFBP-6基因均在肌肉组织中表达量最高,而在肝组织中表达量最低。IGFBP-6基因在1日龄肾脏中,西藏小型猪表达水平高于军牧一号白猪,差异显著(P<0.05);在脾脏组织中,西藏小型猪表达水平低于军牧一号白猪,表达水平差异极显著(P<0.01)。其他生长阶段和组织中,2个品种猪IGFBP-6基因表达水平差异均不显著(P>0.05)。展开更多
Background Increased levels of inflammatory markers have been documented in various settings of coronary artery disease. The vulnerability of coronary lesions in acute myocardial infarction(AMI) at the time of onset m...Background Increased levels of inflammatory markers have been documented in various settings of coronary artery disease. The vulnerability of coronary lesions in acute myocardial infarction(AMI) at the time of onset may be related to serum levels of C reactive protein(CRP) on admission, before CRP levels are affected by myocardial damage.Objective This study assessed the predictive value of CRP levels within six hours after the onset of acute anterior myocardial infarction with primary percutaneous coronary intervention(PCI).Methods The plasma CRP of 76 patients with first acute anterior myocardial infarction was measured within 6 hours after onset. They were divided into 2 groups: group 1( n =20) with elevated CRP( ≥0.3mg/dl ) on admission within 6 hours after onset and group 2( n =56) with normal CRP( <0.3mg/dl ) within 6 hours after onset. All patients were treated by primary PCI. The primary combined end points, including death due to cardiac causes, re MI related to the infarction artery(RIA) and repeat intervention of the RIA, and the restenosis rate were assessed in relation to CRP levels within 6 hours after onset. Left ventricular end diastolic volume index(EDVI),end systolic volume index(ESVI),and ejection fraction(EF) on admission and 6 month after the onset were assessed by left ventriculography. Changes in EDVI(ΔEDVI),ESVI(ΔESVI), and EF(ΔEF) were obtained by subtracting respective on admission values from corresponding 6 month follow up values. Results There were no significant differences in baseline characteristics between the two groups. The primary combined end points were significantly more frequent in group 1(20%) than those in group 2( 1.79% , P <0.01 ).In addition, restenosis rates were significantly higher in group 1 than in group 2(41.18% vs 16.07%, P<0.05). Group 1 showed greater increases in left ventricular volume and less improvement in EF compared with group 2(ΔEDVI 6.31 ±2.17 vs 3.29 ±9.46ml/m 2 , ΔESVI 5.92 ±2.31 vs 3.86 ±1.08ml/m 2 , ΔEF 1.92 ±0.47 vs 4.79 ±1.73% , P <0.05 , respectively).Conclusions CRP levels within 6 hours after the onset of AMI might predict adverse outcome after primary PCI and progressive ventricular remodeling within 6 month of AMI.展开更多
目的:检测胶质瘤患者血浆中IGFBP-6的浓度,探讨其作为临床预测脑胶质瘤生存期标志物的可能性。方法:用酶联免疫吸附法(ELIISA)检测207例不同级别胶质瘤患者和36例正常对照者的血浆IGFBP6水平。采用方差分析(analysis of variance,ANOVA...目的:检测胶质瘤患者血浆中IGFBP-6的浓度,探讨其作为临床预测脑胶质瘤生存期标志物的可能性。方法:用酶联免疫吸附法(ELIISA)检测207例不同级别胶质瘤患者和36例正常对照者的血浆IGFBP6水平。采用方差分析(analysis of variance,ANOVA)比较胶质瘤患者与正常对照组及不同分级的胶质瘤患者的血浆IGFBP6水平,及对中位生存期的影像。结果:(1)低级别胶质瘤(Ⅱ级)患者血浆IGFBP-6平均水平(154.95±43.02ng/mL)较正常对照组(188.77±59.57ng/mL)明显降低(P<0.05),亦明显低于高级别胶质瘤(Ⅲ,Ⅳ级)(183.14.95±71.43ng/mL)(P<0.05),而高级别胶质瘤和正常对照之间无显著性差异。(2)Ⅲ级胶质瘤患者低血浆IGFBP6水平组生存期均值为711天(中位生存期,788天,95%CI,618-805)与高血浆IGFBP6水平组577天(中位生存期,607天,95%CI,510-644)相比有显著统计学差异(P<0.001)。结论:血浆IGFBP-6水平具有成为脑胶质瘤标记物的潜质,可能作为一个生物标记物来预测患者的生存期。展开更多
Anthropogenic climate forcing will cause the global mean sea level to rise over the 21st century.However,regional sea level is expected to vary across ocean basins,superimposed by the influence of natural internal cli...Anthropogenic climate forcing will cause the global mean sea level to rise over the 21st century.However,regional sea level is expected to vary across ocean basins,superimposed by the influence of natural internal climate variability.Here,we address the detection of dynamic sea level(DSL)changes by combining the perspectives of a single and a multimodel ensemble approach(the 50-member CanESM5 and a 27-model ensemble,respectively,all retrieved from the CMIP6 archive),under three CMIP6 projected scenarios:SSP1-2.6,SSP3-7.0 and SSP5-8.5.The ensemble analysis takes into account four key metrics:signal(S),noise(N),S/N ratio,and time of emergence(ToE).The results from both sets of ensembles agree in the fact that regions with higher S/N(associated with smaller uncertainties)also reflect earlier ToEs.The DSL signal is projected to emerge in the Southern Ocean,Southeast Pacific,Northwest Atlantic,and the Arctic.Results common for both sets of ensemble simulations show that while S progressively increases with increased projected emissions,N,in turn,does not vary substantially among the SSPs,suggesting that uncertainty arising from internal climate variability has little dependence on changes in the magnitude of external forcing.Projected changes are greater and quite similar for the scenarios SSP3-7.0 and SSP5-8.5 and considerably smaller for the SSP1-2.6,highlighting the importance of public policies towards lower emission scenarios and of keeping emissions below a certain threshold.展开更多
We retrospectively analyzed the prognostic significance of preoperative serum Krebs von den Lungen-6 (KL-6) surfactant protein-D (SP-D) levels in non-small cell lung cancer (NSCLC) patients with interstitial pneumonia...We retrospectively analyzed the prognostic significance of preoperative serum Krebs von den Lungen-6 (KL-6) surfactant protein-D (SP-D) levels in non-small cell lung cancer (NSCLC) patients with interstitial pneumonia (IP). We enrolled 41 NSCLC patients with IP who have undergone curative surgery. Prognostic significance of serum KL-6 and SP-D levels was examined. We found a significant relationship between serum KL-6 and SP-D levels in NSCLC patients with IP. However, the 5-year survival of patients with high serum KL-6 level was poor, whereas serum SP-D level was not related to patients’ survival. Univariate analysis revealed that there was a trend towards an association between serum KL-6 level and patients’ prognosis but this did not reach statistical significance. This might be due to small number of study patients. In conclusion, there is a possibility that serum KL-6 level is a prognostic marker regardless of the presence of IP.展开更多
We study the energy level statistics of the SO(5) limit of super-symmetry U(6/4) in odd-A nucleus using the interacting boson-fermion model. The nearest neighbor spacing distribution (NSD) and the spectral rigidity (...We study the energy level statistics of the SO(5) limit of super-symmetry U(6/4) in odd-A nucleus using the interacting boson-fermion model. The nearest neighbor spacing distribution (NSD) and the spectral rigidity (△3)are investigated, and the factors that affect the properties of level statistics are also discussed. The results show that the boson number N is a dominant factor. If N is small, both the interaction strengths of subgroups SOB(5) and SOBF(5)and the spin play important roles in the energy level statistics, however, along with the increase of N, the statistics distribution would tend to be in Poisson form.展开更多
High-accuracy geoid determination is an essential goal that many groups of scientists and countries are striving to achieve. Techniques for determining geoid models have evolved over time. Unfortunately, this all-impo...High-accuracy geoid determination is an essential goal that many groups of scientists and countries are striving to achieve. Techniques for determining geoid models have evolved over time. Unfortunately, this all-important determination requires relatively substantial technical and financial resources, depending on the type of geoid to be determined. This situation justifies the inadequacy, and sometimes absence, of accurate geoid models in many countries, despite the new challenges of altimetric positioning using space or satellite positioning techniques. This study focuses on the establishment of a geometric geoid model using simplistic techniques that are accessible and applicable in restricted or wide areas, with or without gravimetric data. The study was applied to the Dakar-Thiès-Mbour triangle, the two regions in the extreme west of Senegal that are home to the most infrastructure projects with the highest socio-economic stakes, as well as mines currently being exploited, and therefore the highest stakes in terms of positioning. This study also enabled us to assess the accuracy of a number of global field models in Senegal, which are used by some professionals for altimetric positioning using Global Positioning Satellite Systems (GNSS) in the absence of a local geoid model. The estimated geoid model is based on the determination of undulation at various sample points in the study area. To this end, a campaign of GNSS observations and direct levelling was carried out on the various points spread across the study area. These measurements were then used to determine the undulation at each point. Bilinear interpolation was used to deduce the undulations throughout the study area, based on the altimeter conversion grid. This grid was evaluated using GPS/level control points.展开更多
Objective:To study and analyze the expression level of homeobox A6(HOXA6)in patients with liver cancer and its correlation with prognosis.Methods:From January 2020 to July 2021,43 patients with liver cancer who underw...Objective:To study and analyze the expression level of homeobox A6(HOXA6)in patients with liver cancer and its correlation with prognosis.Methods:From January 2020 to July 2021,43 patients with liver cancer who underwent surgery without prior radiotherapy or chemotherapy were selected.Liver cancer tissues and adjacent tissues were collected,and the expression levels of HOXA6 mRNA and protein were measured using RT-qPCR and Western blot.The expression level of HOXA6 in tumor tissues(without radiotherapy and chemotherapy)was compared with that in adjacent tissues.Additionally,the prognosis and clinical characteristics of patients with low HOXA6 expression were compared to those with high HOXA6 expression,and the factors influencing high HOXA6 expression in liver cancer patients were analyzed.Results:HOXA6 mRNA and protein expression levels in tumor tissues were significantly higher than in adjacent tissues(P<0.05).There was no significant difference in the 1-year and 2-year survival rates between the high HOXA6 expression group and the low HOXA6 expression group(P>0.05).However,the 3-year survival rate was lower in the high HOXA6 expression group compared to the low HOXA6 expression group(P<0.05).There were no statistically significant differences between the two groups in terms of gender,age,tumor diameter,alpha-fetoprotein levels,or hepatitis B virus DNA levels(P>0.05).However,significant differences were found in the number of tumor lesions,degree of differentiation,and the proportion of tumor metastasis between the two groups(P<0.05).Multivariate logistic regression analysis revealed that the number of tumor lesions,degree of differentiation,and tumor metastasis were influencing factors for high HOXA6 expression in liver cancer patients(P<0.05).Conclusion:HOXA6 expression levels are abnormally elevated in liver cancer patients,and higher HOXA6 expression is associated with a worse 3-year survival rate.The factors influencing HOXA6 expression include the number of tumor lesions,degree of differentiation,and tumor metastasis.展开更多
文摘采用实时荧光定量PCR(Real Time PCR)方法,对不同生长阶段的西藏小型猪和军牧一号白猪的肝脏、脾脏、肾脏及肌肉组织中胰岛素样生长因子结合蛋白6(IGFBP-6)基因mRNA表达水平进行检测,并利用t检验,对相同生长阶段的各组织2个品种猪之间的表达水平进行比较分析。结果表明:西藏小型猪与军牧一号白猪IGFBP-6基因均在肌肉组织中表达量最高,而在肝组织中表达量最低。IGFBP-6基因在1日龄肾脏中,西藏小型猪表达水平高于军牧一号白猪,差异显著(P<0.05);在脾脏组织中,西藏小型猪表达水平低于军牧一号白猪,表达水平差异极显著(P<0.01)。其他生长阶段和组织中,2个品种猪IGFBP-6基因表达水平差异均不显著(P>0.05)。
文摘Background Increased levels of inflammatory markers have been documented in various settings of coronary artery disease. The vulnerability of coronary lesions in acute myocardial infarction(AMI) at the time of onset may be related to serum levels of C reactive protein(CRP) on admission, before CRP levels are affected by myocardial damage.Objective This study assessed the predictive value of CRP levels within six hours after the onset of acute anterior myocardial infarction with primary percutaneous coronary intervention(PCI).Methods The plasma CRP of 76 patients with first acute anterior myocardial infarction was measured within 6 hours after onset. They were divided into 2 groups: group 1( n =20) with elevated CRP( ≥0.3mg/dl ) on admission within 6 hours after onset and group 2( n =56) with normal CRP( <0.3mg/dl ) within 6 hours after onset. All patients were treated by primary PCI. The primary combined end points, including death due to cardiac causes, re MI related to the infarction artery(RIA) and repeat intervention of the RIA, and the restenosis rate were assessed in relation to CRP levels within 6 hours after onset. Left ventricular end diastolic volume index(EDVI),end systolic volume index(ESVI),and ejection fraction(EF) on admission and 6 month after the onset were assessed by left ventriculography. Changes in EDVI(ΔEDVI),ESVI(ΔESVI), and EF(ΔEF) were obtained by subtracting respective on admission values from corresponding 6 month follow up values. Results There were no significant differences in baseline characteristics between the two groups. The primary combined end points were significantly more frequent in group 1(20%) than those in group 2( 1.79% , P <0.01 ).In addition, restenosis rates were significantly higher in group 1 than in group 2(41.18% vs 16.07%, P<0.05). Group 1 showed greater increases in left ventricular volume and less improvement in EF compared with group 2(ΔEDVI 6.31 ±2.17 vs 3.29 ±9.46ml/m 2 , ΔESVI 5.92 ±2.31 vs 3.86 ±1.08ml/m 2 , ΔEF 1.92 ±0.47 vs 4.79 ±1.73% , P <0.05 , respectively).Conclusions CRP levels within 6 hours after the onset of AMI might predict adverse outcome after primary PCI and progressive ventricular remodeling within 6 month of AMI.
文摘目的:检测胶质瘤患者血浆中IGFBP-6的浓度,探讨其作为临床预测脑胶质瘤生存期标志物的可能性。方法:用酶联免疫吸附法(ELIISA)检测207例不同级别胶质瘤患者和36例正常对照者的血浆IGFBP6水平。采用方差分析(analysis of variance,ANOVA)比较胶质瘤患者与正常对照组及不同分级的胶质瘤患者的血浆IGFBP6水平,及对中位生存期的影像。结果:(1)低级别胶质瘤(Ⅱ级)患者血浆IGFBP-6平均水平(154.95±43.02ng/mL)较正常对照组(188.77±59.57ng/mL)明显降低(P<0.05),亦明显低于高级别胶质瘤(Ⅲ,Ⅳ级)(183.14.95±71.43ng/mL)(P<0.05),而高级别胶质瘤和正常对照之间无显著性差异。(2)Ⅲ级胶质瘤患者低血浆IGFBP6水平组生存期均值为711天(中位生存期,788天,95%CI,618-805)与高血浆IGFBP6水平组577天(中位生存期,607天,95%CI,510-644)相比有显著统计学差异(P<0.001)。结论:血浆IGFBP-6水平具有成为脑胶质瘤标记物的潜质,可能作为一个生物标记物来预测患者的生存期。
基金the multiple funding agencies that support CMIP6 and ESGF.Grants CNPq-MCTINCT-594 CRIOSFERA 573720/2008-8 and Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil(CAPES)-Finance Code 001FAPESP 2015/50686-1+1 种基金2017/16511-52018/14789-9。
文摘Anthropogenic climate forcing will cause the global mean sea level to rise over the 21st century.However,regional sea level is expected to vary across ocean basins,superimposed by the influence of natural internal climate variability.Here,we address the detection of dynamic sea level(DSL)changes by combining the perspectives of a single and a multimodel ensemble approach(the 50-member CanESM5 and a 27-model ensemble,respectively,all retrieved from the CMIP6 archive),under three CMIP6 projected scenarios:SSP1-2.6,SSP3-7.0 and SSP5-8.5.The ensemble analysis takes into account four key metrics:signal(S),noise(N),S/N ratio,and time of emergence(ToE).The results from both sets of ensembles agree in the fact that regions with higher S/N(associated with smaller uncertainties)also reflect earlier ToEs.The DSL signal is projected to emerge in the Southern Ocean,Southeast Pacific,Northwest Atlantic,and the Arctic.Results common for both sets of ensemble simulations show that while S progressively increases with increased projected emissions,N,in turn,does not vary substantially among the SSPs,suggesting that uncertainty arising from internal climate variability has little dependence on changes in the magnitude of external forcing.Projected changes are greater and quite similar for the scenarios SSP3-7.0 and SSP5-8.5 and considerably smaller for the SSP1-2.6,highlighting the importance of public policies towards lower emission scenarios and of keeping emissions below a certain threshold.
文摘We retrospectively analyzed the prognostic significance of preoperative serum Krebs von den Lungen-6 (KL-6) surfactant protein-D (SP-D) levels in non-small cell lung cancer (NSCLC) patients with interstitial pneumonia (IP). We enrolled 41 NSCLC patients with IP who have undergone curative surgery. Prognostic significance of serum KL-6 and SP-D levels was examined. We found a significant relationship between serum KL-6 and SP-D levels in NSCLC patients with IP. However, the 5-year survival of patients with high serum KL-6 level was poor, whereas serum SP-D level was not related to patients’ survival. Univariate analysis revealed that there was a trend towards an association between serum KL-6 level and patients’ prognosis but this did not reach statistical significance. This might be due to small number of study patients. In conclusion, there is a possibility that serum KL-6 level is a prognostic marker regardless of the presence of IP.
文摘We study the energy level statistics of the SO(5) limit of super-symmetry U(6/4) in odd-A nucleus using the interacting boson-fermion model. The nearest neighbor spacing distribution (NSD) and the spectral rigidity (△3)are investigated, and the factors that affect the properties of level statistics are also discussed. The results show that the boson number N is a dominant factor. If N is small, both the interaction strengths of subgroups SOB(5) and SOBF(5)and the spin play important roles in the energy level statistics, however, along with the increase of N, the statistics distribution would tend to be in Poisson form.
文摘High-accuracy geoid determination is an essential goal that many groups of scientists and countries are striving to achieve. Techniques for determining geoid models have evolved over time. Unfortunately, this all-important determination requires relatively substantial technical and financial resources, depending on the type of geoid to be determined. This situation justifies the inadequacy, and sometimes absence, of accurate geoid models in many countries, despite the new challenges of altimetric positioning using space or satellite positioning techniques. This study focuses on the establishment of a geometric geoid model using simplistic techniques that are accessible and applicable in restricted or wide areas, with or without gravimetric data. The study was applied to the Dakar-Thiès-Mbour triangle, the two regions in the extreme west of Senegal that are home to the most infrastructure projects with the highest socio-economic stakes, as well as mines currently being exploited, and therefore the highest stakes in terms of positioning. This study also enabled us to assess the accuracy of a number of global field models in Senegal, which are used by some professionals for altimetric positioning using Global Positioning Satellite Systems (GNSS) in the absence of a local geoid model. The estimated geoid model is based on the determination of undulation at various sample points in the study area. To this end, a campaign of GNSS observations and direct levelling was carried out on the various points spread across the study area. These measurements were then used to determine the undulation at each point. Bilinear interpolation was used to deduce the undulations throughout the study area, based on the altimeter conversion grid. This grid was evaluated using GPS/level control points.
基金Medical Science Research Fund of Guangdong Province(Funding No.A2024264)。
文摘Objective:To study and analyze the expression level of homeobox A6(HOXA6)in patients with liver cancer and its correlation with prognosis.Methods:From January 2020 to July 2021,43 patients with liver cancer who underwent surgery without prior radiotherapy or chemotherapy were selected.Liver cancer tissues and adjacent tissues were collected,and the expression levels of HOXA6 mRNA and protein were measured using RT-qPCR and Western blot.The expression level of HOXA6 in tumor tissues(without radiotherapy and chemotherapy)was compared with that in adjacent tissues.Additionally,the prognosis and clinical characteristics of patients with low HOXA6 expression were compared to those with high HOXA6 expression,and the factors influencing high HOXA6 expression in liver cancer patients were analyzed.Results:HOXA6 mRNA and protein expression levels in tumor tissues were significantly higher than in adjacent tissues(P<0.05).There was no significant difference in the 1-year and 2-year survival rates between the high HOXA6 expression group and the low HOXA6 expression group(P>0.05).However,the 3-year survival rate was lower in the high HOXA6 expression group compared to the low HOXA6 expression group(P<0.05).There were no statistically significant differences between the two groups in terms of gender,age,tumor diameter,alpha-fetoprotein levels,or hepatitis B virus DNA levels(P>0.05).However,significant differences were found in the number of tumor lesions,degree of differentiation,and the proportion of tumor metastasis between the two groups(P<0.05).Multivariate logistic regression analysis revealed that the number of tumor lesions,degree of differentiation,and tumor metastasis were influencing factors for high HOXA6 expression in liver cancer patients(P<0.05).Conclusion:HOXA6 expression levels are abnormally elevated in liver cancer patients,and higher HOXA6 expression is associated with a worse 3-year survival rate.The factors influencing HOXA6 expression include the number of tumor lesions,degree of differentiation,and tumor metastasis.
