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- W1502330209 abstract "Across individuals within a population, several levels of variability are observed, from the differential expression of ion channels at the molecular level, to the various action potential morphologies observed at the cellular level, to divergent responses to drugs at the organismal level. However, the limited ability of experiments to probe complex interactions between components has hitherto hindered our understanding of the factors that cause a range of behaviours within a population. Variability is a challenging issue that is encountered in all physiological disciplines, but recent work suggests that novel methods for analysing mathematical models can assist in illuminating its causes. In this review, we discuss mathematical modelling studies in cardiac electrophysiology and neuroscience that have enhanced our understanding of variability in a number of key areas. Specifically, we discuss parameter sensitivity analysis techniques that may be applied to generate quantitative predictions based on considering behaviours within a population of models, thereby providing novel insight into variability. Our discussion focuses on four issues that have benefited from the utilization of these methods: (1) the comparison of different electrophysiological models of cardiac myocytes, (2) the determination of the individual contributions of different molecular changes in complex disease phenotypes, (3) the identification of the factors responsible for the variable response to drugs, and (4) the constraining of free parameters in electrophysiological models of heart cells. Together, the studies that we discuss suggest that rigorous analyses of mathematical models can generate quantitative predictions regarding how molecular-level variations contribute to functional differences between experimental samples. These strategies may be applicable not just in cardiac electrophysiology, but in a wide range of disciplines." @default.
- W1502330209 created "2016-06-24" @default.
- W1502330209 creator A5000485841 @default.
- W1502330209 creator A5035862691 @default.
- W1502330209 creator A5045140204 @default.
- W1502330209 date "2012-05-31" @default.
- W1502330209 modified "2023-10-14" @default.
- W1502330209 title "Exploiting mathematical models to illuminate electrophysiological variability between individuals" @default.
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- W1502330209 doi "https://doi.org/10.1113/jphysiol.2011.223313" @default.
- W1502330209 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3424714" @default.
- W1502330209 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22495591" @default.
- W1502330209 hasPublicationYear "2012" @default.
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