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Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model W.M. Boon Dr. ir. J. F. Vermolen Prof. dr. ir. C. Vuik Dr. ir. J. H. Dubbeldam D. Koppenol, MSc

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Page 1: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

1Challenge the future

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical ModelW.M. Boon

Dr. ir. J. F. Vermolen Prof. dr. ir. C. Vuik Dr. ir. J. H. Dubbeldam D. Koppenol, MSc

Page 2: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

2Challenge the future

Opzet

• Onderzoeksdoel• Biologisch proces• Wiskundig model

• Componenten• Contractie

• Resultaten• Conclusies & aanbevelingen

Page 3: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

3Challenge the future

Onderzoeksdoel

• Wondgenezing• Vorming van nieuw weefsel

• Sterkte afhankelijk van de mate van isotropie• Samentrekking van het weefsel (contractie)

• Contractuur vorming• Modelleren van het volledige proces

Page 4: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

4Challenge the future

Gebied

• Doorsnede huid• Wondgebied• 3 weken

Page 5: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

5Challenge the future

Biologisch proces

Page 6: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

6Challenge the future

Biologisch Proces

• Fibrine klont gevormd• Afbraak door tPA

• PDGF verspreidt via diffusie• Leukocyten arriveren• TGF-β wordt uitgescheden

• Chemoattractant• Fibroblasten arriveren

• Myofibroblasten• Celdeling

• Collageen productie• Contractie

Contractie

Fibroblasten en Myofibroblasten

PDGF

Leukocyten

tPA

Fibrine

TGF-β

Collageen

Page 7: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

7Challenge the future

Wiskundig model

Page 8: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

8Challenge the future

Componenten: Cellen

• Discrete schijven• Receptoren

• Leukocyten• Bloedsomloop

• Fibroblasten en myofibroblasten• Omliggend gebied• Celdeling

• Beweging• Celdood

Page 9: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

9Challenge the future

Componenten: Cytokines

• Diffusievergelijkingen

• tPA: Afbraak fibrine• PDGF: Aantrekking leukocyten• TGF-β: Aantrekking (myo)fibroblasten

• Grid

Page 10: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

10Challenge the future

Componenten: Vezels

• Fibrine

• Collageen• Dichtheid en oriëntatie• Tensor

Page 11: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

11Challenge the future

Contractie

• Samentrekking van het weefsel• Tijdelijke krachten

• Fibroblasten en myofibroblasten• Permanente krachten

• Myofibroblasten• Vorming van contractuur

• Invloed op alle componenten• Discreet• Continu

Page 12: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

12Challenge the future

Tijdelijke krachten

• Puntkracht• Kromme rond cel

• Opsplitsen in lijnstukken• Meerdere puntkrachten

• Formulering

Page 13: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

13Challenge the future

Permanente krachten

• Contractuur vorming• Elementsgewijs• Timer per element

Page 14: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

14Challenge the future

Resultaten

Page 15: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

15Challenge the future

Celpopulaties

0 100 200 300 400 5000

50

100

150

Tijd (uren)

Aan

tal c

elle

n

Leukocyten

Fibroblasten

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Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

16Challenge the future

Resultaten cellen

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Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

17Challenge the future

Resultaten cytokines

0 100 200 300 400 5000

0.1

0.2

0.3

0.4

Tijd (uren)

Gem

idde

lde

conc

entr

atie

PDGF

TGF-

Page 18: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

18Challenge the future

Resultaten cytokines

Page 19: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

19Challenge the future

Resultaten vezels

0 100 200 300 400 5000

0.2

0.4

0.6

0.8

1

Tijd (uren)

Gem

idde

lde

dich

thei

d

Collageen

Fibrine

Page 20: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

20Challenge the future

Resultaten vezels

Page 21: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

21Challenge the future

Resultaten: Vezels

0 100 200 300 400 5000

0.1

0.2

0.3

0.4

Time (hours)

Col

lage

en a

niso

trop

ie

95e percentielGemiddelde

5e percentiel

Page 22: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

22Challenge the future

Contractie

0 100 200 300 400 5000.85

0.9

0.95

1

1.05

Tijd (uren)

Rel

atie

ve o

pper

vlak

te

95e percentiel

Gemiddelde

5e percentiel

Page 23: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

23Challenge the future

Toename in tijdelijke krachten

0 100 200 300 400 5000.85

0.9

0.95

1

1.05

Tijd (uren)

Rel

atie

ve o

pper

vlak

te

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Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

24Challenge the future

Conclusies en aanbevelingen

Page 25: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

25Challenge the future

Conclusies

• Hybride model: Discrete cellen en continue concentraties

• Verschillende stappen van wondgenezing• Toevoeging van contractie

• Bewegend grid• Invloed op alle componenten

• Vorming contractuur

Page 26: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

26Challenge the future

Aanbevelingen

• Groter oppervlak• Tensor representatie verder benutten• Differentiatie tot myofibroblast

• Model als basis

Page 27: Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model 1 Challenge the future Incorporation of Contracture Formation

Incorporation of Contracture Formation during Dermal Wound Healing: a Mathematical Model

27Challenge the future

Vragen