AIM：To detect the impact of insulin-like growth factor-1（IGF-1）and other risk factors for the early prediction of retinopathy of prematurity（ROP）and to establish a scoring system for ROP prediction by using clini...AIM：To detect the impact of insulin-like growth factor-1（IGF-1）and other risk factors for the early prediction of retinopathy of prematurity（ROP）and to establish a scoring system for ROP prediction by using clinical criteria and serum IGF-1 levels.METHODS：The study was conducted with 127 preterm infants.IGF-1 levels in the 1st day of life,1st,2nd,3rd and4th week of life was analyzed.The score was established after logistic regression analysis,considering the impact of each variable on the occurrences of any stage ROP.A validation cohort containing 107 preterm infants was included in the study and the predictive ability of ROP score was calculated.RESULTS：Birth weights（BW）,gestational weeks（GW）and the prevalence of breast milk consumption were lower,respiratory distress syndrome（RDS）,bronchopulmonarydysplasia（BPD）and necrotizing enterocolitis（NEC）were more frequent,the duration of mechanical ventilation and oxygen supplementation was longer in patients with ROP（P〈0.05）.Initial serum IGF-1 levels tended to be lower in newborns who developed ROP.Logistic regression analysis revealed that low BW（〈1250 g）,presence of intraventricular hemorrhage（IVH）and formula feeding increased the risk of ROP.Afterwards,the scoring system was validated on 107 infants.The negative predictive values of a score less than 4 were 84.3%,74.7%and 79.8%while positive predictive values were 76.3%,65.5%and71.6%respectively.CONCLUSION：In addition to BW〈1250 g and IVH,formula consumption was detected as a risk factor for the development of ROP.Breastfeeding is important for prevention of ROP in preterm infants.展开更多
New Zealand (NZ) young rabbits with the administration of insulin-like growth factor (IGF-1) and transforming growth factor-β (TGF-β) with and without mandibular anterior repositioning appliances are explored for th...New Zealand (NZ) young rabbits with the administration of insulin-like growth factor (IGF-1) and transforming growth factor-β (TGF-β) with and without mandibular anterior repositioning appliances are explored for the growth of the mandibular condylar cartilage (MCC). 32 growing NZ and rabbits were divided into 4 groups: the group with saline injection in TMJ, the group which received growth factor injection in TMJ, the group which received anterior positioning appliance and the group which received growth factors injection as well as mandibular repositioning appliance. Gene expression was studied by real-time RT-PCR and cartilage growth by histomorphometry. Administration of growth factors along with mandibular repositioning appliances has induced 1) 1.70-fold expression of Col-2Agene (p value < 0.0005) and 2) 1.47-fold expression of Col-10Agene (p value < 0.0005). In contrast, administration of only mandibular repositioning appliances induced 1) 1.28-fold expression of Col-2Agene (p value < 0.0005) and 2) merely 0.62-fold expression of Col-10Agene (p value < 0.0005), while administration of growth factors only induced 1) mere 0.56-fold expression of Col-2Agene (p value 10A gene (p value growth factors along with mandibular repositioning appliances causes an increase in genetic expressions which have been corroborated by histomorphometry and validated by statistical analysis, during an accelerated growth of mandibular condylar cartilage. Administration of growth factors in the TMJ could provide a synergistic role along with mandibular repositioning appliances for treatment of mandibular retrognathism as well as disorders on the MCC.展开更多
Objective： The aim of the study was to investigate the interference and anti-tumor effects of lentiviral vector of miRNA targeting IGF1R gene regulated by survivin promoter. Methods： The fragment of the survivin pro...Objective： The aim of the study was to investigate the interference and anti-tumor effects of lentiviral vector of miRNA targeting IGF1R gene regulated by survivin promoter. Methods： The fragment of the survivin promoter was acquired by PCR amplification and inserted into pPRIME to recombinant plasmid sur-pPRIME. The complementary DNA containing both sense and antisense Oligo DNA of the targeting sequence was designed, synthesized and cloned into the sur-pPRIME vector, named sur-pPRIME-IGF1R-miR30-shRNA. Viruses were propagated on 293T cells. Viruses were purified by CsCI gradient according to standard techniques, and functional PFU titers were determined by plaque assay on 293 cells. The effect of sur-pPRIME-IGF1R-miR30-shRNA on IGF1R expression of Hep3B cells was detected by RT-PCR and Western blot. The antitumor potential of sur-pPRIME-IGF1R-miR30-shRNA to Hep3B cells was evaluated by CCK-8 assay. Results： sur-pPRIME-IGF1R-miR30-shRNA was constructed successfully. Functional PFU titers of sur-pPRIME-IGF1R-miR30-shRNA were 4.58×10^9 PFU/rnL. Sur-pPRIME-IGF1R-miR30-shRNA was more effective to inhibit IGF1R expression in mRNA or protein levels and the proliferation of Hep3B cells. Conclusion： sur-pPRIME-IGF1R-miR30-shRNA expressing IGF1R-siRNA can inhibit IGF1R expression and may be used for further investigation of gene therapy of liver cancer.展开更多
目的探讨孕妇血清胰岛素样生长因子1(insulin like growth factor 1,IGF-1)、IGF-2、IGF结合蛋白3(IGF binding protein 3,IGFBP-3)与正常胎儿生长的关系。方法选择2010年1月至2011年5月于上海市浦东新区人民医院产前检查并分娩正常体...目的探讨孕妇血清胰岛素样生长因子1(insulin like growth factor 1,IGF-1)、IGF-2、IGF结合蛋白3(IGF binding protein 3,IGFBP-3)与正常胎儿生长的关系。方法选择2010年1月至2011年5月于上海市浦东新区人民医院产前检查并分娩正常体重儿的初产妇66例,分为妊娠16～18周、妊娠26～28周、妊娠37～40周3个阶段进行纵向观察,放射免疫法测定孕妇各阶段血清中IGF-1、IGF-2、IGFBP-3水平并进行对比分析。结果孕期母血IGF-1水平随着孕周增加明显上升,其中IGF-1水平在妊娠37～40周高于妊娠26～28周,妊娠26～28周高于妊娠16～18周,差异均有显著统计学意义(P均<0.01)。孕期母血IGF-2水平随孕周增加无明显改变,妊娠3阶段差异无统计学意义(P>0.05)。母血IGFBP-3水平妊娠37～40周高于妊娠26～28周及妊娠16～18周期,差异有统计学意义(P<0.05),而妊娠26～28周与妊娠16～18周无显著差异。妊娠16～18周、26～28周和37～40周3阶段母血IGF-1、IGF-2、IGFBP-3水平与正常新生儿出生体重无显著相关性。结论孕妇血清IGF-1、IGFBP-3水平与正常胎儿生长密切相关,IGF-1可作为临床评价不同阶段正常胎儿生长的指标,而IGFBP-3更多地反映了妊娠中晚期正常胎儿的生长。展开更多
文摘AIM：To detect the impact of insulin-like growth factor-1（IGF-1）and other risk factors for the early prediction of retinopathy of prematurity（ROP）and to establish a scoring system for ROP prediction by using clinical criteria and serum IGF-1 levels.METHODS：The study was conducted with 127 preterm infants.IGF-1 levels in the 1st day of life,1st,2nd,3rd and4th week of life was analyzed.The score was established after logistic regression analysis,considering the impact of each variable on the occurrences of any stage ROP.A validation cohort containing 107 preterm infants was included in the study and the predictive ability of ROP score was calculated.RESULTS：Birth weights（BW）,gestational weeks（GW）and the prevalence of breast milk consumption were lower,respiratory distress syndrome（RDS）,bronchopulmonarydysplasia（BPD）and necrotizing enterocolitis（NEC）were more frequent,the duration of mechanical ventilation and oxygen supplementation was longer in patients with ROP（P〈0.05）.Initial serum IGF-1 levels tended to be lower in newborns who developed ROP.Logistic regression analysis revealed that low BW（〈1250 g）,presence of intraventricular hemorrhage（IVH）and formula feeding increased the risk of ROP.Afterwards,the scoring system was validated on 107 infants.The negative predictive values of a score less than 4 were 84.3%,74.7%and 79.8%while positive predictive values were 76.3%,65.5%and71.6%respectively.CONCLUSION：In addition to BW〈1250 g and IVH,formula consumption was detected as a risk factor for the development of ROP.Breastfeeding is important for prevention of ROP in preterm infants.
文摘New Zealand (NZ) young rabbits with the administration of insulin-like growth factor (IGF-1) and transforming growth factor-β (TGF-β) with and without mandibular anterior repositioning appliances are explored for the growth of the mandibular condylar cartilage (MCC). 32 growing NZ and rabbits were divided into 4 groups: the group with saline injection in TMJ, the group which received growth factor injection in TMJ, the group which received anterior positioning appliance and the group which received growth factors injection as well as mandibular repositioning appliance. Gene expression was studied by real-time RT-PCR and cartilage growth by histomorphometry. Administration of growth factors along with mandibular repositioning appliances has induced 1) 1.70-fold expression of Col-2Agene (p value < 0.0005) and 2) 1.47-fold expression of Col-10Agene (p value < 0.0005). In contrast, administration of only mandibular repositioning appliances induced 1) 1.28-fold expression of Col-2Agene (p value < 0.0005) and 2) merely 0.62-fold expression of Col-10Agene (p value < 0.0005), while administration of growth factors only induced 1) mere 0.56-fold expression of Col-2Agene (p value 10A gene (p value growth factors along with mandibular repositioning appliances causes an increase in genetic expressions which have been corroborated by histomorphometry and validated by statistical analysis, during an accelerated growth of mandibular condylar cartilage. Administration of growth factors in the TMJ could provide a synergistic role along with mandibular repositioning appliances for treatment of mandibular retrognathism as well as disorders on the MCC.
基金Supported by the grants from the Education Departmental Natural Science Research Funds of Jiangsu Provincial Higher School of China(No.09KJB320018,No.09KJB310016)
文摘Objective： The aim of the study was to investigate the interference and anti-tumor effects of lentiviral vector of miRNA targeting IGF1R gene regulated by survivin promoter. Methods： The fragment of the survivin promoter was acquired by PCR amplification and inserted into pPRIME to recombinant plasmid sur-pPRIME. The complementary DNA containing both sense and antisense Oligo DNA of the targeting sequence was designed, synthesized and cloned into the sur-pPRIME vector, named sur-pPRIME-IGF1R-miR30-shRNA. Viruses were propagated on 293T cells. Viruses were purified by CsCI gradient according to standard techniques, and functional PFU titers were determined by plaque assay on 293 cells. The effect of sur-pPRIME-IGF1R-miR30-shRNA on IGF1R expression of Hep3B cells was detected by RT-PCR and Western blot. The antitumor potential of sur-pPRIME-IGF1R-miR30-shRNA to Hep3B cells was evaluated by CCK-8 assay. Results： sur-pPRIME-IGF1R-miR30-shRNA was constructed successfully. Functional PFU titers of sur-pPRIME-IGF1R-miR30-shRNA were 4.58×10^9 PFU/rnL. Sur-pPRIME-IGF1R-miR30-shRNA was more effective to inhibit IGF1R expression in mRNA or protein levels and the proliferation of Hep3B cells. Conclusion： sur-pPRIME-IGF1R-miR30-shRNA expressing IGF1R-siRNA can inhibit IGF1R expression and may be used for further investigation of gene therapy of liver cancer.
文摘目的探讨孕妇血清胰岛素样生长因子1(insulin like growth factor 1,IGF-1)、IGF-2、IGF结合蛋白3(IGF binding protein 3,IGFBP-3)与正常胎儿生长的关系。方法选择2010年1月至2011年5月于上海市浦东新区人民医院产前检查并分娩正常体重儿的初产妇66例,分为妊娠16～18周、妊娠26～28周、妊娠37～40周3个阶段进行纵向观察,放射免疫法测定孕妇各阶段血清中IGF-1、IGF-2、IGFBP-3水平并进行对比分析。结果孕期母血IGF-1水平随着孕周增加明显上升,其中IGF-1水平在妊娠37～40周高于妊娠26～28周,妊娠26～28周高于妊娠16～18周,差异均有显著统计学意义(P均<0.01)。孕期母血IGF-2水平随孕周增加无明显改变,妊娠3阶段差异无统计学意义(P>0.05)。母血IGFBP-3水平妊娠37～40周高于妊娠26～28周及妊娠16～18周期,差异有统计学意义(P<0.05),而妊娠26～28周与妊娠16～18周无显著差异。妊娠16～18周、26～28周和37～40周3阶段母血IGF-1、IGF-2、IGFBP-3水平与正常新生儿出生体重无显著相关性。结论孕妇血清IGF-1、IGFBP-3水平与正常胎儿生长密切相关,IGF-1可作为临床评价不同阶段正常胎儿生长的指标,而IGFBP-3更多地反映了妊娠中晚期正常胎儿的生长。
