igf-systemet som diagnostiskt hjälpmedel kerstin brismar inst för molekylär medicin ...€¦ ·...
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IGF-Systemet som diagnostiskt hjälpmedel
Kerstin Brismar
Inst för molekylär medicin och kirurgi,
Karolinska Institutet
kerstin.brismar@ki.se 21 sept 2017
First publications
IGF-I Kerstin Hall et al 1972
IGFBP-1 Kerstin Hall et al 1984
Why this difference?
Gillian has too little IGF-I activity due to the diet
which leads to premature aging in skin, bone,
heart and brain
Nigella has higher IGF activity due to her diet
which increases the risk for cancer and T2DM
IGF-I
Insulin-like Growth Factor-I
Effects
Growth Metabolism
Differentiation Antioxidant
Cell survival
Healing
IGF-1
Markör för: Anabolism/katabolism
Tillväxt
GH-sekretion
Nutritionsstatus
Insulinsekretion
IUGR (intrauterin tillväxthämning)
Före och efter operation
För mycket IGF-I = akromegali
IGF-I
IGFBP-1
Insulin
Stress
Fasta
Östradiol/
ProgesteronAminosyror
Hypoxi
Glukagon
Cytokiner
GH
Insulin
Testosteron/DHEA
Fasta
Cytokiner
Aminosyror ++
+
+
+
++ +
+
_
_
_
_
_
+
Association of IGF-I with diseases
IGF-I
Insulin
Inflammation
Cancer
CVD
Diabetes
compl. DM
When and why is IGF-I important in clinical diagnosis
and treatment?
Marker of GH activity
Marker of nutrition
Marker of anabolism
Marker of insulin activity
Riskmarker for cancer
Riskmarker of CVD and
diabetes
The Insulin-like Growth Factor Bindingproteins
are needed to control IGF activity
IGFBP-1-6
What is IGFBP-1?Insulin-like growth factor binding protein-1
A protein which is mainly produced in the
liver mainly regulated by insulin, which inhibit
the production
IGFBP-1: Bildas i levern
Produktionen regleras av insulin (hämmas), av
stresshormoner och cytokiner (ökar)
Är måltidsberoende – varierar under dygnet
Reglerar effekten av IGF-1
Transporterar IGF-1 till målcellerna
Har egna effekter, bl a av betydelse för reparation av
vävnadsskador, stimulera cellmigration (chemotaxi)
N NO syntes= kärlreaktivitet
IGFBP-1Insulin-like Growth Factor Binding Protein-1
Effects
IGF-dependent IGF-independent
pIGFBP inhibits IGF effects Stimulate cell migration
npIGFBP enhances IGFeffects and proliferation, NOsyntes
IGF-I
IGFBP-1
Insulin
Stress
Fasta
Östradiol/
ProgesteronAminosyror
Hypoxi
Glukagon
Cytokiner
GH
Insulin
Testosteron/DHEA
Fasta
Cytokiner
Aminosyror ++
+
+
+
++ +
+
_
_
_
_
_
+
IGFBP-1
Markör för: Fritt IGF-1
Insulinsekretion
Insulinresistens
Glukostolerens
Leverresistens
Metabola syndromet
Nutritionsstatus
Inflammation
Endotelfunktion
Riskmarkör för typ 2 diabetes, CVD, cancer
IGFBP-1
a surrogate marker for IGF-1
IGFBP-1 is a marker of diurnal insulin
secretion and response to glucose
IGFBP-1 can predict type 2 diabetes
Risk of type 2 diabetes within 8-10 yes(OR)
Glu > 5.1 mmol/L
BMI > 28.5
M/L > 5
cm2/m/1000
Insulin > 150 M
> 90 w
IGFBP-1 < 11 M
< 26 w
Good correlation between biological
marker and response to a risk score
43
34
27
0
5
10
15
20
25
30
35
40
45
50
Low, n=143 Slightly Elevated, n=121 Moderate to High, n=51
IGFB
P-1
(m
icro
g/l)
FINDRISC Group
IGFBP-1 och FINDRISC
p=0.01
p <0.0001
Changes in serum IGF-1 and IGFBP-1 after 6 months of life style intervention
in 160 middle-age men
2 October 2017Kerstin Brismar 45
Journal of Internal Medicine, 1995, 238:121-130
2 October 2017 Kerstin Brismar 46
IGFBP-1 before and after bariatric surgery by gender
IGFBP -1 and IGF-I are markers of
catabolism/malnutrition
IGFBP-1 is a marker of hepatic insulin
resistance
IGFBP-1 is a marker of insulin
insufficiency
DM type 2
IGFBP-1 avgör bästa behandl
IGFBP-10
HbA1c
Insulin treatment
Per oral treatment (OHA)
Jonas Tovi, Thesis 1998
IGF-I and IGFBP-1 can predict late
diabetes complications
New riskfactor for diabetes complications
• High IGFBP-1– death after MI
• High IGFBP-1- instable plaque
• High IGFBP-1– neuropathy
• High IGFBP-1- retinopathy
• High IGFBP-1 - nephropathy
Wallander et al. In press Diabetes Care 2007
Kaplan-meier – IGFBP-1
tertiles – cv death
Sudden death (n=15)
Index infarction (n=16)
Reinfarction (n=9)
CHF (n=5)
Stroke (n=2)
Other (n=3)
Association of IGFBP-1 with diseases
IGFBP-I
Diabetes
complications
Cancer
CVD
DM
Insulin
• Free IGF-I is regulated by IGFBP-1
• IGFBP-1 is a surrogate marker for free IGF-1
• IGFBP-1, high level, is a marker for diabetes complications: microangiopathy, neuropathy and morbidity and mortality after MI in type 2 diabetes
• IGFBP-1 is a marker for endothelial function and low level a risk marker for atherosclerosis in the metabolic syndrome and CVD
• IGFBP-1 is a marker for changes in insulin sensitivity after increased physical activity
• IGFBP-1 is a marker for insulin sensitivity in the liver
• IGFBP-1, low level, is a risk marker for future type 2 DM
Diabetologia 2006, 2008, Diab and Metabol 2009, JCEM 2008, Diabetes Care 2007, 2009
Insulin
Insulinresistens
Sug / Begär
KolhydraterGlukos / Stärkelse
Hjärnan Inflammation
(leptin resistens)
( ACTH GH FSH/LH)
Midja/InflammationFettmassa
PCOS
Hyperkoagulation
Demens
( amyloid)
Tg / FFA
Fettlever
Hjärt-kärlsjukdom
Njursjukdom
Inaktivitet
Inflammation
Stress
Rökning
ROS
hyperglykemi
Progesteron/östrogen kvot
IGF-I
IGFBP-1
Puls
WBC
Cancer
Blodtryc
k
Glukos
Lipider
Metabola
Syndromet
IGFBP-1
GH deficiency (and Metabolic Syndrome)
INSULIN RESISTANCE
Kalorirestriktion normaliserar IGF-I and
IGFBP-1 och kardiovaskulära riskfaktorer
hos de med metabola syndromet
Baseline 3 Månader 6 månader 1 år
25,5
26,0
26,5
27,0
27,5
28,0
28,5
29,0
29,5
30,0
BMI
Kvinnor
Män
Baseline 3 Månader 6 månader 1 år
90,0
92,0
94,0
96,0
98,0
100,0
102,0
104,0
106,0
108,0
110,0
Midja
Kvinnor
Män
Baseline 3 Månader 6 månader 1 år
0,5
0,7
0,9
1,1
1,3
1,5
1,7
1,9
HDL
Kvinnor
Män
Baseline 3 Månader 6 månader 1 år
2,9
3,0
3,1
3,2
3,3
3,4
3,5
LDL
Kvinnor
Män
Baseline 3 Månader 6 månader 1 år
5,4
5,6
5,8
6,0
6,2
6,4
6,6
Glukos
Kvinnor
Män
Baseline 3 Månader 6 månader 1 år
10,0
15,0
20,0
25,0
30,0
35,0
40,0
45,0
IGFBP-1
Kvinnor
Män
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