C-reactive protein (CRP) is an inflammatory
biomarker. Based
on the results of several prospective epidemiologic studies, C-reactive
protein has
emerged as one of the most powerful predictors of cardiovascular disease.
This marker provides valuable information to clinicians in various
clinical settings, ranging from overt cardiovascular disease, stable
angina, presenting acute coronary syndromes and peripheral vascular
disease, to the
metabolic syndrome. Furthermore,
elevated C-reactive protein has been demonstrated
to actively contribute to all stages of atherogenesis, participating in
endothelial dysfunction, atherosclerotic-plaque formation, plaque
maturation, plaque destabilization and eventual rupture. Thus, it might
also serve as a therapeutic target. It is quite likely that the future
will see much wider use of C-reactive protein in improving the ability of
doctors to identify and manage cardiovascular disease.
Levels of C-reactive protein can be decreased by increasing
consumption of fruits and vegetables.
C Reactive Protein and
Mediterranean Diet
Sticking to a
Mediterranean diet, high in fruits and vegetables and
low in saturated fats, lowers levels of
inflammation in
the elderly, as reflected by lower levels of C-reactive protein. This
effect should, in turn, lead to a lower risk of cardiovascular disease
that has been associated with this type of diet.
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c reactive protein, and
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C Reactive Protein and Pregnancy
Women who have very high levels of the inflammatory marker C-reactive protein
early in pregnancy run the risk of delivering before term.
C reactive protein test blood
test
A simple blood test for c reactive protein can be done at the same time
as a cholesterol screening. The high-sensitivity C-reactive protein (hs-CRP)
test, helps determine heart disease risk and is widely available. It is
important to remember that the usefulness of knowing hs-CRP levels in a
particular individual is still unknown. For the time being, The American Heart
Association recommends C-reactive protein as part of routine screening for those
who are at intermediate risk for heart disease. HS-CRP results in that risk
group can help the physician determine additional testing and treatment. The
American Heart Association adds that patients at low risk probably do not need
their C-reactive protein tested and those at high risk should be treated
aggressively regardless of their CRP test results.
How to Lower Elevated C
Reactive Protein
Eating more fresh fruits and vegetables is a safe and reliable way
to decrease C reactive protein levels. Foods high in
fiber also lower C reactive
protein. Higher intake of n–3 polyunsaturated fatty acids from marine or fish is
inversely associated with serum C-reactive protein (CRP) concentrations.
Therefore, eating more fish or perhaps taking fish oil capsules can reduce C
reactive protein levels.
Fiber and C Reactive Protein
In a study of 524 healthy adults, investigators found that those with the
highest fiber intake had lower blood levels of C-reactive protein (CRP) than
those who ate the least fiber. The findings support the general recommendation
that adults get 20 to 35 grams of fiber per day, in the form of fruits,
vegetables, beans and whole
grains. It's not clear why fiber may reduce inflammation, but it may lower
cholesterol and blood sugar, both of which can contribute to inflammation. Both
of the main forms of fiber, soluble and insoluble, were related to lower CRP
levels. Soluble fiber is found in foods like oatmeal, beans, berries and apples,
while whole grains and many vegetables are good sources of insoluble fiber.
American Journal of Clinical Nutrition, April 2006.
C Reactive Protein and
Hypertension
For young adults in their 30s, the blood test for C-reactive protein
(CRP), which is linked to inflammation, is unlikely to predict the future risk
of high blood pressure. There is increasing evidence that inflammation is
related to high blood pressure, and the presence of CRP often indicates
low-level ongoing inflammation. In a previous study of women in their 50s,
raised CRP levels, as a marker of inflammation, predicted the development of
high blood pressure, independent of other risk factors such as obesity. But it
appears that in a younger group of individuals, mainly black and white people in
their 30s, would C-reactive protein does not independently predict hypertension.
Therefore, CRP blood test is not necessary to do in one's 30s solely to
determine future blood pressure risk.
Rhematoid arthritis
Increased blood levels of C-reactive protein
(CRP), a marker for inflammation, are seen long before symptoms of
rheumatoid
arthritis appear.
Psyllium supplement does not affect
C reactive protein levels
Dr. Dana E. King and colleagues at the Medical University of South
Carolina, Charleston assigned 162 overweight or obese adults without heart
disease to take psyllium supplements (7 or 14 grams daily) or no supplements.
Their objective was to see whether daily fiber supplementation would lower blood
levels of C-reactive protein or CRP and other markers of inflammation. After 3
months, the results showed changes in CRP levels or the other markers of
inflammation were no different between the group that got psyllium fiber
supplements and the no-supplement comparison group. Annals of Family Medicine,
March/April 2008.
Comments: Psyllium may provide benefits that are not necessarily
related to changes in c reactive protein levels.
C Reactive Protein Research
Update
A 4-wk intervention with high intake of carotenoid-rich vegetables and
fruit reduces high C-reactive protein in healthy, nonsmoking men.
American Journal of Clinical Nutrition, Vol. 82, No. 5, 1052-1058, November 2005
We investigated the effects of low, medium, and high intakes of vegetables and
fruit on markers of immune functions, including nonspecific markers of
inflammation. In a randomized controlled trial, nonsmoking men consumed a diet
that included ?2 servings/d of vegetables and fruit for 4 wk. The subjects were
then randomly assigned to 1 of 3 groups to consume 2 servings/d, 5 servings/d,
or 8 servings/d of carotenoid-rich vegetables and fruit for another 4-wk period.
Plasma concentrations of vitamins C and E and carotenoids were measured. The
assessment of immunologic and inflammatory markers included the number and
activity of natural killer cells, secretion of cytokines, lymphocyte
proliferation, and plasma C-reactive protein concentrations. The high
intake (8 servings/d) of vegetables and fruit significantly increased total
carotenoid concentrations in plasma compared with the low intake (2 servings/d;
week 4 compared with week 8), whereas concentrations of vitamins C and E did not
differ between week 4 and week 8. Immunologic markers were not significantly
modulated. In contrast, C-reactive protein was significantly reduced at week 8
in the subjects who consumed 8 servings/d of vegetables and fruit compared with
those who consumed 2 servings/d. Conclusions: In healthy, well-nourished,
nonsmoking men, 4 wk of low or high intakes of carotenoid-rich vegetables and
fruit did not affect markers of immune function. However, a high intake of
vegetables and fruit may reduce inflammatory processes, as indicated by the
reduction of plasma C-reactive protein.
Fruit
and vegetable intakes, C-reactive protein, and the metabolic syndrome1,2,3
American Journal of Clinical Nutrition, Vol. 84, No. 6, 1489-1497, December
2006. Ahmad Esmaillzadeh, Masoud Kimiagar, Yadollah Mehrabi, Leila Azadbakht,
Frank B Hu and Walter C Willett. 1 From the Department of Human Nutrition,
School of Nutrition and Food Science (AE, MK, and LA), and the School of Public
Health (YM), Shaheed Beheshti University of Medical Sciences, Tehran, Iran, and
the Departments of Nutrition (AE, LA, FBH, and WCW) and Epidemiology (FBH and
WCW), Harvard School of Public Health, Boston, MA
We evaluated the relation between fruit and vegetable intakes and C-reactive
protein (CRP) concentrations and the prevalence of the metabolic syndrome. Fruit
and vegetable intakes were assessed with the use of a validated semiquantitative
food-frequency questionnaire in a cross-sectional study of 486 Tehrani female
teachers aged 40–60 y. The reported mean daily fruit and vegetable intakes were
228 ± 79 and 186 ± 88 g/d, respectively. Both fruit and vegetable intakes were
inversely associated with plasma CRP concentrations. Conclusions: Higher intakes
of fruit and vegetables are associated with a lower risk of the metabolic
syndrome; the lower risk may be the result of lower CRP concentrations. These
findings support current dietary recommendations to increase daily intakes of
fruit and vegetables as a primary preventive measure against cardiovascular
disease.
C Reactive Protein questions
Q. Do CoQ10 and
Lipoic acid reduce c
reactive protein levels?
A. I am not sure, I have not seen such studies yet.