This study was to investigate the expression of HIF-1α and vascular endothelial growth factor (VEGF) in human osteosarcoma cell line SaOS-2 under hypoxia, to explore the effect of HIF-1α on hypoxia-activated angiogenesis regulation pathway in osteosarcoma.
3. The cell cycle in Gl/S phase were arrested by certain concentration of 5-Fu, which in p16/cyclinDl/CDK4/Rb regulation pathway, there was maybe correlation between in creasing transcription of p16 gene and decreasing transcription of cycIinDl gene, but no relation transcription inCDK4 Rb.
In this paper, the agricultural ecoeconomic system in Changji is evaluated in the aspects of its type, structure, function and efficiency. The corresponding control approaches are proposed based on the advantages and disadvantages of the system. \;
With 30 representative rice genotypes in south rice zone as experimental materials, this dissertation systematically studied genotypic differences in nitrogen uptake and utilization efficiency and effects of nitrogen fertilizer management and efficient silicon fertilizer on nitrogen uptake and utilization efficiency in rice, clarified improving their potential, physiological mechanism and regulation approaches for enhancing nitrogen efficiency.
GIFs amino acid sequence, structure and metal binding properties are like other metallothioneins, and its gene shows strikingly high homology to other metallothionein encoding genes, but they adopt different gene regulation approaches.
grain-leaf ratio (No of spikelets per cm2 leaf area) > 0.58; root-shoot ratio at heading stage >0.25 and the amount of root exudates > 5 g·m-2·h-1. The regulation approaches and key cultivation techniques forraising the super-high-yielding population were discussed.
It concludes by examining how strategic-relational state theory might be used in conjunction with the regulation approach to underpin analyses of policy and politics at the urban and regional level.
However, both cAMP and PKC are known to elevate 25-hydroxyvitamin D3 1α-hydroxylase gene expression, therefore, another unknown calcium regulation pathway using Klotho protein medium might exist.
As an HSPC300 homolog is present in the Arabidopsis genome but no WAVE homolog has yet been found, the existence of a related regulation pathway was doubtful.
The data obtained using catalase, H2O2, phorbol-12-myristate 13-acetate (PMA) or a specific inhibitor of PKC demonstrate the possibility of a PDGF up-regulation pathway of GCS synthesis.
There exists a large class of nonlinear systems with uncertainties, such as hydraulic turbine governors, whose robust control problem is hard to solve by means of the existing robust control approaches.
Despite the recent advances in access control approaches applicable to Grid computing, there remain issues that impede the development of effective access control models for Grid applications.