Incorporating different food products and composite meals in the Eindhoven Diabetes Education Simulator (E-DES)
Anne Maas, MSc ([email protected])
Researcher at Máxima Medical Center, Eindhoven
The problem…
???
Eindhoven Diabetes Educational Simulator (E-DES)
Objective:Practice safely, independently at home!
??
Simplified physiological model
• Gut, plasma and remote compartments
• In- and outflow of glucose and insulin
In equations
Glucose in gut
Glucose in plasma
Insulin in plasma
Insulin in remote compartment
gut2
pl
meal1
11
meal
gutplmealmealgut
))(exp(
,d
d
GG
G
GGGG
Mkm
Dtktkm
MmtDmt
M
plpl
plplplpl1ren
pl
plrem
5it
pl
pl
pl
plliv
0itnon
gut
b2pl
bgut
rem4
plpl3
livliv
plrenremplitplitnongutgutrempllivpl
,0
,
,,d
d
th
ththbG
M
Mb
bM
GG
GG
bb
G
GGif
GGifGGMν
c
g
GK
GIkg
GK
G
G
GKgg
MMν
fkm
Mν
fg
IkGGkgg
GgIGgGgMgIGgt
G
plpl12
rem
pl11
liv
la5.0
la2
5.0b
15.0la
sc29
sc12
sc2
sc110
sasc1
sc2b
9sa
pl
d8plpl
i
7plpl6
1pnc
plrempllivlalasc2sc1saplpncpl
d
d
d
d
d
dd
,,d
d
b
hhI
hh
III
II
II
bb
II
IIki
Iki
baUt
UttMv
tthi
UkUct
U
Ukut
U
UMv
ki
t
GktGG
kGGki
IiIitUiUUiGit
I
rem13
it
plpl12
rempl
remitplplrem
d
d
Iki
IIkii
IiIit
I
b
Model calculates glucose and insulin
Fit model on data
Fit model on data
time
con
cen
trati
on
magnitudeerror
peak (simulation)
peak (data)
data
original model
error
optimal model
Predicting OGTT data for healthy people
Plasma glucose Plasma insulin
From clinical to home setting: food inclusion
• Hypothesis: capture differences in dynamic profile by adjusting mathematical model
Graph from Sadler 2011, ILSI Europe Concise Monograph Series
Meal ingestion data from literature
• Literature search glucose + insulin data• 18 publications• 57 meals, 220 subjects total
• 35 meals included, … subjects total
Resulting model fits for different meals
Plasma glucose
Adjustments in the model
Conclusion & outlook
• Conclusion:– 35 different food products/meals included– Wide variety of meals– Only food intake part of model adjusted
• Outlook:– Dinner data largely missing measure 6
dinners in new research– Method & food profiles transferable to
model for diabetes type 1 and 2
• Y Rozendaal• N van Riel• P Hilbers• W Cottaar
• C van Pul• H Haak
Sponsored by Novo Nordisk
The team
Top Related