The pharmacometrics core will provide modeling and simulation platforms for the construction of genomic and proteomic-based disease progression models to understand the in vivo dynamics of oxygen-induced retinopathy (OIR) and the complex interrelationships with combination nonsteroidal anti-inflammatory drug (NSAID) and systemic caffeine regimens. Our population-based approach allows for the systematic evaluation of patient, molecular, and environmental specific characteristics that explain inter-subject variability in the time-course of disease. Quantitative relationships will be developed to capture the temporal aspects of biomarker expression that will be used to test competing hypotheses of the extent to which treatment and co-factors modify disease progression. Such information may also be used to optimize the selection of dose and administration schedules of such combination drug regimens. Our core faculty members have extensive experience in the development of drug exposure-response relationships. Modeling and the determination of drug and system specific properties may be extended to enhance clinical trial design and data analysis, improve screening of compounds in development, and identify prognostic risk factors. For Protocol 1, nonlinear mixed effects pharmacokinetic/pharmacodynamic (PK/PD) models will be constructed and evaluated for understanding the exposure-response relationships of ocular ibuprofen or ketorolac with systemic caffeine in a rat experimental model of OIR. Model-based techniques will also be applied to facilitate the identification of the critical number of hyperoxic/hypoxic episodes resulting in abnormal angiogenesis in OIR. For Protocol 2, mechanism-based cellular PK/PD models will be developed to understand the influence of disease processes and drug effects in human retinal microvascular endothelial cells and astrocytes. Hyperoxia/hypoxia cycling and ibuprofen with or without caffeine concentrations will be linked to mathematical models of signal transduction (VEGF and Notch) and phenotypic outcomes. For Protocol 3, models developed from Protocols 1 and 2 will be scaled to inform and modify clinical protocols using translational modeling techniques developed within the core. Clinical data sets will be subsequently used to further refine clinical PK/PD models of retinopathy of prematurity (ROP) therapy using locally applied NSAIDS and systemic caffeine, better understand safety and efficacy, and provide a platform for the future individualization of ROP pharmacotherapy.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Specialized Center--Cooperative Agreements (U54)
Project #
5U54HD071594-04
Application #
8683209
Study Section
Special Emphasis Panel (ZHD1)
Project Start
Project End
Budget Start
2014-07-01
Budget End
2015-06-30
Support Year
4
Fiscal Year
2014
Total Cost
Indirect Cost
Name
Suny Downstate Medical Center
Department
Type
DUNS #
City
Brooklyn
State
NY
Country
United States
Zip Code
Beharry, Kay D; Cai, Charles L; Skelton, Jacqueline et al. (2018) Oxygen-Induced Retinopathy from Recurrent Intermittent Hypoxia Is Not Dependent on Resolution with Room Air or Oxygen, in Neonatal Rats. Int J Mol Sci 19:
Beharry, Kay D; Cai, Charles L; Ahmad, Taimur et al. (2018) Impact of Chronic Neonatal Intermittent Hypoxia on Severity of Retinal Damage in a Rat Model of Oxygen-Induced Retinopathy. J Nat Sci 4:
Nicolau, Yona; Bany-Mohammed, Fayez; Cai, Charles L et al. (2018) SiRNA silencing of VEGF, IGFs, and their receptors in human retinal microvascular endothelial cells. Am J Transl Res 10:1990-2003
Cai, Charles; Ahmad, Taimur; Valencia, Gloria B et al. (2018) Intermittent hypoxia suppression of growth hormone and insulin-like growth factor-I in the neonatal rat liver. Growth Horm IGF Res 41:54-63
Valencia, Arwin M; Abrantes, Maria A; Hasan, Jamal et al. (2018) Reactive Oxygen Species, Biomarkers of Microvascular Maturation and Alveolarization, and Antioxidants in Oxidative Lung Injury. React Oxyg Species (Apex) 6:373-388
Beharry, Kay D; Cai, Charles L; Valencia, Gloria B et al. (2018) Human retinal endothelial cells and astrocytes cultured on 3-D scaffolds for ocular drug discovery and development. Prostaglandins Other Lipid Mediat 134:93-107
Wang, Xue; Niu, Jin; Li, Jun et al. (2018) Temporal Effects of Combined Birinapant and Paclitaxel on Pancreatic Cancer Cells Investigated via Large-Scale, Ion-Current-Based Quantitative Proteomics (IonStar). Mol Cell Proteomics 17:655-671
Quan, Michelle; Cai, Charles L; Valencia, Gloria B et al. (2017) MnTBAP or Catalase Is More Protective against Oxidative Stress in Human Retinal Endothelial Cells Exposed to Intermittent Hypoxia than Their Co-Administration (EUK-134). React Oxyg Species (Apex) 3:47-65
Shen, Xiaomeng; Shen, Shichen; Li, Jun et al. (2017) An IonStar Experimental Strategy for MS1 Ion Current-Based Quantification Using Ultrahigh-Field Orbitrap: Reproducible, In-Depth, and Accurate Protein Measurement in Large Cohorts. J Proteome Res 16:2445-2456
Valencia, Arwin M; Cai, Charles L; Tan, Jeffrey et al. (2017) Intravitreal bevacizumab alters type IV collagenases and exacerbates arrested alveologenesis in the neonatal rat lungs. Exp Lung Res 43:120-133

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