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Utredninger ved von Willebrands sykdom og Ehlers Danlos Syndrom (EDS) ,[object Object],[object Object],[object Object]
Tema-oversikt: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Familien S fra Åland i Finland
Normal blodgjennomstrømning i blodårene: Brosstad 99
Trombocytt-adhesjon til vWF: Skadested vWF GPIb =  vWF reseptor GPIIb/IIIa = fibrinogen reseptor
Brosstad 99 S-S S-S S-S S-S vWF-   dimer vWF- tetramer vWF-multimer Basalmembran Endotel Syntese av vWF i endotel
Interaksjon  mellom  plater og von Willebrand Faktor von Willebrand faktor Basalmembran Endotel Blodplater Plateplugg Brosstad 99
vWF som transportprotein: Brosstad99 Lever FVIII m/s  von Willebrand
” von Willebrand sykdom (vWD), type, profylakse/behandling” – fra ”Utredning og behandling av økt blødningstendens” av Brosstad/Brinch Type Molekyl/Arvegang/Prevalens Blødningssted Profylakse/Behandling vWD 1 Partiell, kvantitativ vWF mangel. Autosomal dominant arv, men diagnose vanskelig pga. redusert penetranse og variablet klinisk uttrykk. Samtidig reduksjon av vWF:Ag og FVIII. Normalt multimer-mønster. 1:100-500?  Hud Slimhinner Octostim Cyklokapron P-pille ved menoragi vWD 2A Kvalitativ vWF-defekt hvor de største multimerene mangler og med lav ristocetinkofaktor-aktivitet relativt til vWF:Ag. Vanligvis i autosomal dominant arv betinget i missense mutasjon i vWF A2 repeat. Gruppe 1 (defekt i intracellulær transport) eller Gruppe 2 (økt postsekretorisk proteolyse i plasma) <1:100 000?  Hud Slimhinner Octostim Cyklokapron Hemate eller Octanate  vWD 2B Kvalitativ vWF-defekt vanligvis assosiert med nedsatt mengde store multimerer. Økt ristocetin-indusert plateaggregasjon (RIPA), mens ristocetin-kofaktor kan være normal. Autosomal dominant arv. <1:100 000?  Hud Slimhinner Hemate eller Octanate Cyklokapron  vWD 2M Kvalitativ vWF-defekt i A1 domenet assosiert med spesifikke defekter i plate/vWF interaksjoner, men normalt multimer-mønster. Autosomal dominant arv. 1:100 000?  Hud Slimhinner Octostim ved chirurgia minor Cyklokapron Hemate   vWD 2N Kvalitativ vWF-defekt som skyldes nedsatt vWF-binding av FVIII og derfor lavt nivå av sirku-lerende FVIII (<5%). Autosomal recessiv arv. 1:100 000?  Hud Slimhinner Hemate eller Octanate Cyklokapron  vWD 3 Klinisk alvorlig kvantitativ vWF-mangel (<5%). FVIII <10%. Vanligvis autosomal recessiv arv, sjelden homozygot eller dobbel heterozygot arv av vWD type 1. 1:100 000?  Symptomer som ved alvorlig hemofili Hemate eller Octanate Cyklokapron
Symptomer ved vWD: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],vWD1 vWD 2 vWD 3
vWF-multimer-analysen ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Foto: N.M.Schjelderup
Farging av prøvematerialet Foto: N.M.Schjelderup
Inkubering i 56 °C Foto: N.M.Schjelderup
Støping av elektroforese-gel Foto: N.M.Schjelderup
Professor Solum ved UiO
Appliserte prøver på gel Foto: N.M.Schjelderup
Elektroforese Foto: N.M.Schjelderup
Elektroforese etter 15 minutter Foto: N.M.Schjelderup
Ferdig kjørt elektroforese Foto: N.M.Schjelderup
Blotting-utstyret Foto: N.M.Schjelderup
Elfo-gel oppå NC-membran før blotting Foto: N.M.Schjelderup
Blotting ved 5 volt i 30 minutter Foto: N.M.Schjelderup
Elfo-gel oppå NC-membran etter blotting Foto: N.M.Schjelderup
Blokkering med 3% tørrmelk Foto: N.M.Schjelderup
Inkubering med antistoffer under risting Foto: N.M.Schjelderup
Fremkalling av NC-membranen Foto: N.M.Schjelderup
Abra … Foto: N.M.Schjelderup
…  kadabra! Foto: N.M.Schjelderup
Ferdig resultat: Foto: N.M.Schjelderup
Blodtypenes betydning ,[object Object],Fra boken ”Immunologi og transfusjon” utgitt av Helsedirektoratet (1987)
Trombocytter ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Platene aktiveres i kontakt med: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Human platelet spreading on fibrinogenfrom Dr Catherine Pears' Lab
FX FVIIIa Aktivert blodplatemembran Indre   Koagulasjonssystem Aktivert plate-membran: FX FIXa FXa
Trombocytt-aktivering Ikke-aktivert blodplate Aktivert  blodplate  Brosstad 2002 Translokering av negativt ladet fosfolipid fra det  indre  til det  ytre  blad av blodplatens plasma-membran starter koagulasjonen
Skadested vWF GPIb =  vWF reseptor GPIIb/IIIa = fibrinogen reseptor Fibrinogen Plate-til-plate-adhesjon
Plateinhibitorer ,[object Object],[object Object],[object Object],[object Object]
Inhiberende medikamenter ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Trombocyttaggregasjon Foto: N.M.Schjelderup
Hva påviser vi ved trc-aggregering? ,[object Object],[object Object],[object Object],[object Object],[object Object],Foto: N.M.Schjelderup
Agonister ved trc-aggregering Agonist 1. konsentrasjon 2. konsentrasjon Kollagen 8,4 µg/mL 2,1 µg/mL ADP 9,37 µM 1,87 µM Adrenalin 7,3 µM - Arachidonsyre 1,2 mM 0,6 mM Trombin 1 U 0,25 U Ristocetin 1,5 g/L 0,75 g/L TRAP 25 µM -
Prøvemateriale Foto: N.M.Schjelderup TRC: 250-350 x 10^3/mm^3
Chrono-Log Whole-Blood Aggro-meter Foto: Frank Brosstad
Aggregometerets prinsipp Kilde: Dr. Brosstad
Trombocyttaggregasjon Kilde: Dr. Brosstad Foto: N.M.Schjelderup Kollagen ADP
Måling av ATP release ,[object Object],[object Object],ATP release  Foto: N.M.Schjelderup
Case: Første prøvesett  (tilsendt prøve) ,[object Object],[object Object],[object Object],[object Object],[object Object]
Case: Andre prøvesett  (poliklinisk prøve) ,[object Object],[object Object],[object Object],[object Object]
Ehlers Danlos Syndrom (EDS) ,[object Object],[object Object],[object Object],[object Object]
Kollagen
Seks hovedtyper EDS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hudmanifestasjoner ved EDS: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Leddmanifestasjoner ved EDS: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Økt blødningstendens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Diverse/sjeldne symptomer: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Prevalens ,[object Object],[object Object]
Kontaktinformasjon: ,[object Object],[object Object],[object Object],[object Object]

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Utredninger ved von Willebrands sykdom og Ehlers Danlos Syndrom (EDS)