BACKGROUND Lateral facial clefts are atypical with a low incidence in the facial cleft spectrum.With the development of ultrasonography(US)prenatal screening,such facial malformations can be detected and diagnosed pre...BACKGROUND Lateral facial clefts are atypical with a low incidence in the facial cleft spectrum.With the development of ultrasonography(US)prenatal screening,such facial malformations can be detected and diagnosed prenatally rather than at birth.Although three-dimensional US(3DUS)can render the fetus'face via 3D reconstruction,the 3D images are displayed on two-dimensional screens without field depth,which impedes the understanding of untrained individuals.In contrast,a 3D-printed model of the fetus'face helps both parents and doctors develop a more comprehensive understanding of the facial malformation by creating more interactive aspects.Herein,we present an isolated lateral facial cleft case that was diagnosed via US combined with a 3D-printed model.CASE SUMMARY A 31-year-old G2P1 patient presented for routine prenatal screening at the 22nd wk of gestation.The coronal nostril-lip section of two-dimensional US(2DUS)demonstrated that the fetus'bilateral oral commissures were asymmetrical,and left oral commissure was abnormally wide.The left oblique-coronal section showed a cleft at the left oral commissure which extended to the left cheek.The results of 3DUS confirmed the cleft.Furthermore,we created a model of the fetal face using 3D printing technology,which clearly presented facial malformations.The fetus was diagnosed with a left lateral facial cleft,which was categorized as a No.7 facial cleft according to the Tessier facial cleft classification.The parents terminated the pregnancy at the 24th wk of gestation after parental counseling.CONCLUSION In the diagnostic course of the current case,in addition to the traditional application of 2D and 3DUS,we created a 3D-printed model of the fetus,which enhanced diagnostic evidence,benefited the education of junior doctors,improved parental counseling,and had the potential to guide surgical planning.展开更多
The gene expression and activity of （＋）-δ-cadinene synthase during cotton development and in response to stress, as well as the spatial and temporal pattern of sesquiterpene biosynthesis, constitute one of chemica...The gene expression and activity of （＋）-δ-cadinene synthase during cotton development and in response to stress, as well as the spatial and temporal pattern of sesquiterpene biosynthesis, constitute one of chemical defense mechanisms in cotton plants. In order to explore the effects of omethoate on the cotton defense in relation to （＋）-δ-cadinene synthase and gossypol, effects of omethoate treatments on activity of （＋）-δ-cadinene synthase and gossypol content in cotton seedlings were investigated. Cotton seedlings treated with 400 mg L-1 omethoate exhibited a significant decrease in the specific activity of （＋）-δ-cadinene synthase from 12 to 120 h after treating when compared to the untreated control; significantly lower （＋）-δ-cadinene synthase activity was also observed in cotton seedlings treated with 200 mg L-1 omethoate from 72 to 120 h after treating; but for cotton seedlings treated with 100 mg L-1 omethoate, from 12 to 120 h after treating, no significant changes were observed for activity of （＋）-δ-cadinene synthase. The gossypol content in cotton seedlings treated with 100, 200 or 400 mg L-1 omethoate for different time periods showed no significant changes compared to that of the control. These results indicated that the activity of （＋）-δ-cadinene synthase in cotton seedlings in responses to exposure of omethoate at three concentrations for different time periods followed dose- and time-dependent responses to omethoate exposure. With omethoate as a chemical stress factor for cotton seedlings, the cotton defense in relation to the activity of （＋）-δ-cadinene synthase in cotton seedlings may be affected by omethoate application.展开更多
Tripolinolate A(TLA) is recently identified as a new compound from a halophyte plant Tripolium vulgare and has been shown to have significant in vitro activity against the proliferation of colorectal cancer and glioma...Tripolinolate A(TLA) is recently identified as a new compound from a halophyte plant Tripolium vulgare and has been shown to have significant in vitro activity against the proliferation of colorectal cancer and glioma cells. This study was designed to further investigate the effects of TLA on the proliferation of human normal cells, and the apoptosis and cell cycle in colorectal cancer cells, and the growth of tumors in the colorectal cancer-bearing animals. The data obtained from this study demonstrated that: 1) TLA had much less cytotoxicity in the human normal cells than the colorectal cancer cells; 2) TLA remarkably induced apoptosis in the human colorectal cancer cells and blocked cell cycle at G2/M phase, and 3) TLA had significant anti-colorectal cancer activity in the tumor-bearing animals.展开更多
目的 Y染色体性别决定区域相关高迁移率族盒21基因(sex-determining regio of Y chromosome related high-mobility-group box 21,SOX21)在结直肠癌组织中发生异常甲基化,然而该基因在结肠癌粪便标本中是否发生异常甲基化及其意义尚不...目的 Y染色体性别决定区域相关高迁移率族盒21基因(sex-determining regio of Y chromosome related high-mobility-group box 21,SOX21)在结直肠癌组织中发生异常甲基化,然而该基因在结肠癌粪便标本中是否发生异常甲基化及其意义尚不清楚。本研究检测组织和粪便标本中SOX21基因启动子区甲基化水平,旨在评估甲基化的SOX21基因作为结直肠癌粪便基因检测标志物价值。方法选取2014-05-20-2015-02-26中山大学附属第六医院胃肠外科收治的105例结直肠癌患者的癌与癌旁正常组织,分别组成结直肠癌组和癌旁正常组。以及2014-04-03-2016-10-10收治的240例患者粪便标本,其中结直肠癌80例为结直肠癌组,腺瘤77例为腺癌组,正常83例为正常组。采用定量甲基化特异性聚合酶链式反应(quantitative methylation specific polymerase chain reaction,qMSP)技术检测SOX21基因甲基化水平,计算敏感性、特异性和ROC曲线下面积,并分析SOX21基因甲基化与结直肠癌患者临床病理特征之间关系。结果组织标本结果显示,肿瘤组织SOX21基因甲基化水平高于其对应癌旁组织,Z=8.679,P<0.001;当甲基化的SOX21特异性为97.1%(102/105)时,结直肠癌检出率为84.8%(89/105);ROC曲线下面积为0.930,95%CI为0.889～0.971;SOX21甲基化与年龄、性别、部位、TNM分期、肿瘤大小和分化程度无关联,均P>0.05。粪便标本结果显示,结直肠癌组和腺瘤组SOX21甲基化水平高于正常组,P<0.05。当甲基化的SOX21特异性为97.6%(81/83)时,对结直肠癌敏感性为80.0%(64/80),对腺瘤敏感性为33.8%(26/77);SOX21检测结直肠癌的ROC曲线下面积为0.926,95%CI为0.885～0.968,检测腺瘤的ROC曲线下面积为0.667,95%CI为0.583～0.751;SOX21基因对肿瘤检出率与肿瘤近、远端发生位置有关联,远端肿瘤检出率高,χ2=17.372,P<0.001,但与年龄、性别、TNM分期、肿瘤大小和分化程度无关联,P>0.05。结论在结直肠癌组织和粪便标本中,SOX21基�展开更多
文摘BACKGROUND Lateral facial clefts are atypical with a low incidence in the facial cleft spectrum.With the development of ultrasonography(US)prenatal screening,such facial malformations can be detected and diagnosed prenatally rather than at birth.Although three-dimensional US(3DUS)can render the fetus'face via 3D reconstruction,the 3D images are displayed on two-dimensional screens without field depth,which impedes the understanding of untrained individuals.In contrast,a 3D-printed model of the fetus'face helps both parents and doctors develop a more comprehensive understanding of the facial malformation by creating more interactive aspects.Herein,we present an isolated lateral facial cleft case that was diagnosed via US combined with a 3D-printed model.CASE SUMMARY A 31-year-old G2P1 patient presented for routine prenatal screening at the 22nd wk of gestation.The coronal nostril-lip section of two-dimensional US(2DUS)demonstrated that the fetus'bilateral oral commissures were asymmetrical,and left oral commissure was abnormally wide.The left oblique-coronal section showed a cleft at the left oral commissure which extended to the left cheek.The results of 3DUS confirmed the cleft.Furthermore,we created a model of the fetal face using 3D printing technology,which clearly presented facial malformations.The fetus was diagnosed with a left lateral facial cleft,which was categorized as a No.7 facial cleft according to the Tessier facial cleft classification.The parents terminated the pregnancy at the 24th wk of gestation after parental counseling.CONCLUSION In the diagnostic course of the current case,in addition to the traditional application of 2D and 3DUS,we created a 3D-printed model of the fetus,which enhanced diagnostic evidence,benefited the education of junior doctors,improved parental counseling,and had the potential to guide surgical planning.
基金supported by the National Natural Science Foundation of China (30771426)the National "973"Program of China (2006CB102003)+1 种基金the Mechanisms and Detection of Insecticide Resistance of Important Pests Insects in China and Japan (NSFC and JSPS, 30911140107)the Program for China New Century Excellent Talentsin University of China (NCET-06-0113)
文摘The gene expression and activity of （＋）-δ-cadinene synthase during cotton development and in response to stress, as well as the spatial and temporal pattern of sesquiterpene biosynthesis, constitute one of chemical defense mechanisms in cotton plants. In order to explore the effects of omethoate on the cotton defense in relation to （＋）-δ-cadinene synthase and gossypol, effects of omethoate treatments on activity of （＋）-δ-cadinene synthase and gossypol content in cotton seedlings were investigated. Cotton seedlings treated with 400 mg L-1 omethoate exhibited a significant decrease in the specific activity of （＋）-δ-cadinene synthase from 12 to 120 h after treating when compared to the untreated control; significantly lower （＋）-δ-cadinene synthase activity was also observed in cotton seedlings treated with 200 mg L-1 omethoate from 72 to 120 h after treating; but for cotton seedlings treated with 100 mg L-1 omethoate, from 12 to 120 h after treating, no significant changes were observed for activity of （＋）-δ-cadinene synthase. The gossypol content in cotton seedlings treated with 100, 200 or 400 mg L-1 omethoate for different time periods showed no significant changes compared to that of the control. These results indicated that the activity of （＋）-δ-cadinene synthase in cotton seedlings in responses to exposure of omethoate at three concentrations for different time periods followed dose- and time-dependent responses to omethoate exposure. With omethoate as a chemical stress factor for cotton seedlings, the cotton defense in relation to the activity of （＋）-δ-cadinene synthase in cotton seedlings may be affected by omethoate application.
基金supported by the National Natural Science Foundation of China(No.81273428)the Public Welfare Technology Research and Social Development Project of Zhejiang Province(No.2016C33058)
文摘Tripolinolate A(TLA) is recently identified as a new compound from a halophyte plant Tripolium vulgare and has been shown to have significant in vitro activity against the proliferation of colorectal cancer and glioma cells. This study was designed to further investigate the effects of TLA on the proliferation of human normal cells, and the apoptosis and cell cycle in colorectal cancer cells, and the growth of tumors in the colorectal cancer-bearing animals. The data obtained from this study demonstrated that: 1) TLA had much less cytotoxicity in the human normal cells than the colorectal cancer cells; 2) TLA remarkably induced apoptosis in the human colorectal cancer cells and blocked cell cycle at G2/M phase, and 3) TLA had significant anti-colorectal cancer activity in the tumor-bearing animals.
文摘目的 Y染色体性别决定区域相关高迁移率族盒21基因(sex-determining regio of Y chromosome related high-mobility-group box 21,SOX21)在结直肠癌组织中发生异常甲基化,然而该基因在结肠癌粪便标本中是否发生异常甲基化及其意义尚不清楚。本研究检测组织和粪便标本中SOX21基因启动子区甲基化水平,旨在评估甲基化的SOX21基因作为结直肠癌粪便基因检测标志物价值。方法选取2014-05-20-2015-02-26中山大学附属第六医院胃肠外科收治的105例结直肠癌患者的癌与癌旁正常组织,分别组成结直肠癌组和癌旁正常组。以及2014-04-03-2016-10-10收治的240例患者粪便标本,其中结直肠癌80例为结直肠癌组,腺瘤77例为腺癌组,正常83例为正常组。采用定量甲基化特异性聚合酶链式反应(quantitative methylation specific polymerase chain reaction,qMSP)技术检测SOX21基因甲基化水平,计算敏感性、特异性和ROC曲线下面积,并分析SOX21基因甲基化与结直肠癌患者临床病理特征之间关系。结果组织标本结果显示,肿瘤组织SOX21基因甲基化水平高于其对应癌旁组织,Z=8.679,P<0.001;当甲基化的SOX21特异性为97.1%(102/105)时,结直肠癌检出率为84.8%(89/105);ROC曲线下面积为0.930,95%CI为0.889～0.971;SOX21甲基化与年龄、性别、部位、TNM分期、肿瘤大小和分化程度无关联,均P>0.05。粪便标本结果显示,结直肠癌组和腺瘤组SOX21甲基化水平高于正常组,P<0.05。当甲基化的SOX21特异性为97.6%(81/83)时,对结直肠癌敏感性为80.0%(64/80),对腺瘤敏感性为33.8%(26/77);SOX21检测结直肠癌的ROC曲线下面积为0.926,95%CI为0.885～0.968,检测腺瘤的ROC曲线下面积为0.667,95%CI为0.583～0.751;SOX21基因对肿瘤检出率与肿瘤近、远端发生位置有关联,远端肿瘤检出率高,χ2=17.372,P<0.001,但与年龄、性别、TNM分期、肿瘤大小和分化程度无关联,P>0.05。结论在结直肠癌组织和粪便标本中,SOX21基�
