21.07.2013 Views

nr. 477 - 2011 - Institut for Natur, Systemer og Modeller (NSM)

nr. 477 - 2011 - Institut for Natur, Systemer og Modeller (NSM)

nr. 477 - 2011 - Institut for Natur, Systemer og Modeller (NSM)

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

List of Figures<br />

2.1 Relation between the number of autoantibodies in the blood and how likely<br />

the person is to develop diabetes . . . . . . . . . . . . . . . . . . . . . . . . 9<br />

3.1 Dependence of treatment strategy on β-cell mass . . . . . . . . . . . . . . . 13<br />

5.1 shows an example of a generic compartment model . . . . . . . . . . . . . . 22<br />

5.2 shows the compartment system as given by Marée et al. (2006) . . . . . . . 24<br />

5.3 dynamics of the Balb/c-mouse and NOD-mouse. . . . . . . . . . . . . . . . 28<br />

5.4 the non-necrotic part of our modified compartment model . . . . . . . . . . 30<br />

5.5 the necrotic part of our modified compartment model . . . . . . . . . . . . 31<br />

5.6 shows the compartment system corresponding to equations 5.17 to 5.20 . . 31<br />

5.7 Simulations of the DuCa model with a Hill function instead of the Michaelis-<br />

Menten function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34<br />

5.8 A plot based on the findings of Stoffels et al. (2004) that apoptotic as well<br />

as necrotic β-cells implies cytokine secretion . . . . . . . . . . . . . . . . . . 36<br />

5.9 simulations of the DuCa model with activation due to necrotic cells . . . . 37<br />

5.10 simulations of reversible and irreversible model with Balb/c phagocytosis<br />

parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39<br />

5.11 simulations of the reversible and irreversible model with NOD phagocytosis<br />

parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40<br />

5.12 shows simulations of the irreducible model with k = 0 . . . . . . . . . . . . 42<br />

5.13 shows a simulation made with matlab of the reversible model where a<br />

term of −cMa has been added to equation 5.7 to model turnover of active<br />

macrophages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42<br />

5.14 In the figures simulations of the DuCa model with turnover of the active<br />

macrophages are presented . . . . . . . . . . . . . . . . . . . . . . . . . . . 43<br />

6.1 A compartment representation of the CPH model. . . . . . . . . . . . . . . 45<br />

6.2 Shows the compartment system <strong>for</strong> the Intermediate Model . . . . . . . . . 47<br />

6.3 Sketch of the nullclines <strong>for</strong> the IM with dM/dt = 0. . . . . . . . . . . . . . . 57<br />

6.4 Sketch of the nullclines <strong>for</strong> the IM with dM/dt = 0. . . . . . . . . . . . . . . 58<br />

6.5 Sketch of the nullclines <strong>for</strong> the IM including crowding terms with QSS on M. 62<br />

7.1 A supercritical (I), a subcritical (II) and degenerate Hopf bifurcation (III). 68<br />

8.1 Bifurcation diagram <strong>for</strong> the DuCa model using f1 as the bifurcation parameter<br />

and NOD parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 74<br />

8.2 Plot of the real and imaginary parts of the eigenvalues on the NODf1-USB 76<br />

ix

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!