ABC  ATP-binding cassette  AKT  V-Akt murine thymoma viral oncogene homolog  ALDH1  aldehyde dehydrogenase 1  AR  androgen receptor  Bad  Bcl-2-associated death promoter  Bak  Bcl-2 homologous antagonist killer  Bax  Bcl-2-associated X protein  Bcl-2  B-cell lymphoma  Bcl-xL  Bcl-extra large  Bcl-xs  Bcl-extra short  BCRP  breast cancer resistance protein  Bid  BH3 interacting domain death agonist  Bik  Bcl-2-interacting killer  BNIP3  Bcl2/adenovirus E1B 19 kDa protein-interacting protein 3  CAF  cancer-associated fibroblast  CAIX  carbonic anhydrase IX  cFLIP  cellular FLICE (FADD-like IL-1β-converting enzyme)-inhibitory protein  ChIP  chromatin immunoprecipitation  CI  Combination Index  cIAP1/2  cellular IAP1/2  CML  chronic myelogenous leukemia  CSC  cancer stem cell  DISC  death-inducing signaling complex  DR  death receptor  DRI  Dose Reduction Index  ECM  extracellular matrix  EMT  epithelial-mesenchymal transition  EpCAM  epithelial cell adhesion molecule  GLUT  glucose transporter  GSK3β  glycogen synthase kinase-3β  HIF-1  hypoxia inducible factor-1  HSF1  heat shock factor 1  HSP  heat shock protein  IAP  inhibitor of apoptosis protein  JNK  c-JUN N-terminal kinase  MAPK  mitogen-activated protein kinase  Mcl-1  myeloid leukemia cell differentiation protein  MDM2  murine double minute 2  MDR  multidrug resistance  MKP  MAPK phosphatase  MRP1  multidrug resistance protein 1  NF-κB  nuclear factor-kappaB  pAkt  phosphor-Akt  PARP  poly ADP-ribose polymerase  P-gp  P-glycoprotein  PI3K-PTEN  phosphatidylinositol 3-kinase-phosphatase and tensin homolog  PKC  phosphorylated at Ser9 by protein kinase C  pp2A  protein phosphatase 2A  REST  repressor element-1 silencing transcription factor  SAR  structure-activity relationship  TAM  tumor-associated macrophage  TFIIH  transcription factor IIH  TKI  tyrosine kinase inhibitor  TM  tumor-microenvironment  TRAIL/Apo-2L  TNF-related apoptosis-inducing ligand  tRXRα  the N-terminal truncated form of the nuclear retinoid X receptor-α  TWHF  Tripterygium wilfordii Hook F  VEGF  vascular endothelial growth factor  XIAP  X-linked IAP  XPB  xerodermapigmentosum group B protein  Triptolide  Antineoplastic  Resistance  Sensitization  Mechanism  

CT  attenuation  enhancement  Contrast  medium  Coronary  CT  angiography  Iodine  delivery  rate  Low  dose  contrast  agent  Low  tube  voltage  Radiation  reduction  

Low-dose CT  Noise reduction  Sinogram restoration  Adaptive filtering  Self-similarity  

An artificial pancreas system (APS) mimics the function of a real pancreas through monitoring a diabetic's blood glucose and administering the right dose of insulin via an automatic control loop. It is hailed as a promising cure of diabetes  though this technology is still years away from commercial use due to a few technological bottlenecks. The simulation model of insulin-glucose metabolism of type 1 diabetes mellitus (T1DM) is an essential part of APS. In order to simplify the parameter identification task so that the model can be implemented electronically with ease  this paper presents a simplified model based on Routh approximation model reduction method. The results show that the approximation error between the simplified model and the original model is so small that can be neglected. Based on the simplified model  a PID controller is designed to maintain normoglycemia (90mg/dl) in subjects with T1DM. The in silico simulation results show that the glucose concentration is controlled well  the risk of hyperglycemia and hypoglycemia is reduced a lot. This suggests that the simplified model describes the insulin-glucose metabolism process accurately  and the PID control algorithm is well-suitable to guide the further development of an APS. 2012 IEEE.