Relationship between markers of activated coagulation, their correlation with inflammation, and association with coronary heart disease (NPHSII).
To determine whether activation of coagulation increases in parallel with inflammation and whether coagulation activation markers (CAMs) are independently associated with coronary heart disease (CHD), in the prospective study, NPHSII.



Surveillance of 2997 men between 50 and 63 years yielded 314 first CHD events during 36507 person-years of observation. The plasma levels of activated factor XII (FXIIa), the peptides released upon activation of factor X (FXpep) and factor IX (FIXpep), activated factor VII (FVIIa), prothrombin fragment 1 + 2 (F1 + 2) and fibrinopeptide A (FpA) served as indices of activity along the coagulation pathway. C reactive protein (CRP) provided a marker of inflammatory activity.



While borderline or significant correlations were identified for each CAM with inflammation, as determined by CRP levels, these did not reach as high a numerical value as was shown for fibrinogen with CRP. FVIIa and FIXpep possessed independent associations with CHD: a one SD increase in adjusted FIXpep and FVIIa level was associated with a relative hazard of 1.20 (95% CI 1.00-1.43) and 0.70 (CI 0.58-0.86), respectively, using a group including all CHD events, compared with 'no-event'.



Inflammation has significant but minimal impact upon CAMs of the extrinsic coagulation pathway. Reduced FVIIa and increased FIXpep levels were found to be significant, independent, predictors of CHD.
Miller
G J
GJ
MRC Cardiovascular Research Group, Wolfson Institute for Preventive Medicine, London, UK.
Ireland
H A
HA
Cooper
J A
JA
Bauer
K A
KA
Morrissey
J H
JH
Humphries
S E
SE
Esnouf
M P
MP
D015415:Biomarkers; D001777:Blood Coagulation / Q000502:physiology*; D001779:Blood Coagulation Factors / Q000032:analysis*; D002097:C-Reactive Protein / Q000032:analysis; D015331:Cohort Studies; D015897:Comorbidity; D003324:Coronary Artery Disease / Q000097:blood / Q000453:epidemiology; D003327:Coronary Disease / Q000097:blood / Q000453:epidemiology*; D004041:Dietary Fats / Q000494:pharmacology; D004198:Disease Susceptibility; D004789:Enzyme Activation / Q000187:drug effects; D005164:Factor IX / Q000032:analysis; D015942:Factor VIIa / Q000032:analysis; D002836:Hemophilia B / Q000453:epidemiology; D006801:Humans; D007249:Inflammation / Q000097:blood* / Q000453:epidemiology; D008131:London / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012307:Risk Factors
D015415:Biomarkers; D001779:Blood Coagulation Factors; D004041:Dietary Fats; D005164:Factor IX; D002097:C-Reactive Protein; D015942:Factor VIIa