Home About us Editorial board Search Ahead of print Current issue Archives Submit article Instructions Subscribe Contacts Login 
  Users Online: 308 Home Print this page Email this page Small font sizeDefault font sizeIncrease font size  

 Table of Contents  
EDITORIAL
Year : 2017  |  Volume : 7  |  Issue : 2  |  Page : 83-84  

C-reactive protein: A prognostic indicator


Department of Pharmacology, Adesh Institute of Medical Sciences and Research, Bathinda, Punjab, India

Date of Web Publication8-May-2017

Correspondence Address:
Mandeep Kaur
Department of Pharmacology, Adesh Institute of Medical Sciences and Research, Bathinda, Punjab
India
Login to access the Email id

Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijabmr.IJABMR_63_17

Rights and Permissions

How to cite this article:
Kaur M. C-reactive protein: A prognostic indicator. Int J App Basic Med Res 2017;7:83-4

How to cite this URL:
Kaur M. C-reactive protein: A prognostic indicator. Int J App Basic Med Res [serial online] 2017 [cited 2017 Nov 25];7:83-4. Available from: http://www.ijabmr.org/text.asp?2017/7/2/83/205821

C-reactive protein (CRP) is a serum acute phase reactant and a valuable inflammatory biomarker in various clinical conditions. It was first discovered by Tillett and Francis (1930) in the serum of patients with pneumonia but was isolated in 1941.[1] CRP derives its name due to ability of the CRP to react with C-polysaccharide isolated from pneumococcal cell walls. The CRP gene is located on the first chromosome. It is an inducible protein which is secreted mainly by hepatocytes in response to inflammatory stimulus. It functions by binding to pathogens and activating the complement system of the body.[2] It is also produced in small amount by nonhepatic cells such as neurons, atherosclerotic plaques, monocytes, kupffer cells, and lymphocytes.[3],[4]

CRP levels can be easily measured and standardized and provide similar results in fresh or stored state reflecting the stability of protein. It neither varies from person to person nor influenced by genetic makeup or gender of the patient. Thus, it is considered to be relatively stable serum protein compared with many other markers. In most healthy controls, plasma levels of CRP are usually 1 mg/L, with the normal range defined as <10 mg/L. Plasma levels increase within 4–6 h after initial tissue injury and continue to increase several hundredfold within 24–48 h. They rapidly disappear as the infection, or inflammatory process resolves.[5]

CRP is a useful indicator to assess and monitor the presence, severity, and course of the inflammatory response in infectious and noninfectious disorders including acute myocardial infarction, angina, malignancies, rheumatoid arthritis, inflammatory bowel disease, burns, trauma, and after surgical procedures.[6],[7],[8] It also serves as a prognostic indicator in a variety of clinical conditions such as acute coronary syndrome (ACS). In this condition, elevation of CRP levels is related to increased risk of myocardial infarction. Nowadays, high-sensitivity CRP is being increasingly used as a tool for cardiac risk evaluation and as a prognostic factor in ACS.[9] It measures CRP exactly the same as the conventional test but is capable of detecting much lower CRP concentrations (detection limit of 0.03 mg/L). CRP is a strong predictor for adverse long-term events in patients with type B acute aortic dissection. Higher are the CRP values, and worse is the prognosis and outcome of the disease.[9] CRP also appears valuable in predicting the clinical outcome and prognosis of many solid tumors such as lung, pancreas, hepatocellular, and urological cancers.[10] High levels of CRP predict poor prognosis in patients with these tumors. It may also help predict tumor recurrence and treatment response. The CRP also has a role in predicting the risk of rebleeding in patients with acute nonvariceal upper gastrointestinal bleeding.[11] CRP is considered to be a strong predictor of prognosis in chronic obstructive pulmonary disease. High level of serum CRP is associated with an increased risk of mortality in these patients.[12] Elevated CRP levels at ICU discharge also have a poor prognosis. These high levels are associated with readmission and in-hospital mortality.[13] Although CRP is a valuable marker to predict prognosis and other important clinical outcomes in many diseases, better designed large-scale studies on the role of CRP as a prognostic indicator are needed to confirm these observations.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

 
   References Top

1.
Tillett WS, Francis T. Serological reactions in pneumonia with a non-protein somatic fraction of pneumococcus. J Exp Med 1930;52:561-71.  Back to cited text no. 1
    
2.
Chandrashekara S. C-reactive protein: An inflammatory marker with specific role in physiology, pathology, and diagnosis. Internet J Rheumatol Clin Immunol 2014;2:1-23.  Back to cited text no. 2
    
3.
Pepys M. C-reactive protein: A critical update. J Clin Invest 2003;112:299.  Back to cited text no. 3
    
4.
Jialal I, Devaraj S, Venugopal SK. C-reactive protein: Risk marker or mediator in atherothrombosis? Hypertension 2004;44:6-11.  Back to cited text no. 4
    
5.
Weinberg G, Powell K. Laboratory aids for diagnosis of neonatal sepsis. In: Remington J, Klein J, editors. Infectious Diseases of the Fetus and Newborn Infant. 5th ed. Philadelphia, PA: Saunders; 2001. p. 1327-44.  Back to cited text no. 5
    
6.
Jaye DL, Waites KB. Clinical applications of C-reactive protein in pediatrics. Pediatr Infect Dis J 1997;16:735-46.  Back to cited text no. 6
    
7.
Young B, Gleeson M, Cripps AW. C-reactive protein: A critical review. Pathology 1991;23:118-24.  Back to cited text no. 7
    
8.
Reinhart K, Meisner M, Hartog C. Diagnosis of sepsis: Novel and conventional parameters. Adv Sepsis 2001;1:42-51.  Back to cited text no. 8
    
9.
Su Y. The value of C-reactive protein in emergency medicine. J Acute Dis 2014;3:1-5.  Back to cited text no. 9
    
10.
Shrotriya S, Walsh D, Bennani-Baiti N, Thomas S, Lorton C. C-reactive protein is an important biomarker for prognosis tumor recurrence and treatment response in adult solid tumors: A systematic review. PLoS One 2015;10:e0143080.  Back to cited text no. 10
    
11.
Lee HH, Park JM, Lee SW, Kang SH, Lim CH, Cho YK, et al. C-reactive protein as a prognostic indicator for rebleeding in patients with nonvariceal upper gastrointestinal bleeding. Dig Liver Dis 2015;47:378-83.  Back to cited text no. 11
    
12.
Deng ZC, Zhao P, Cao C, Sun SF, Zhao F, Lu CY, et al. C-reactive protein as a prognostic marker in chronic obstructive pulmonary disease. Exp Ther Med 2014;7:443-6.  Back to cited text no. 12
    
13.
Gülcher SS, Bruins NA, Kingma WP, Boerma EC. Elevated C-reactive protein levels at ICU discharge as a predictor of ICU outcome: A retrospective cohort study. Ann Intensive Care 2016;6:5.  Back to cited text no. 13
    




 

Top
 
 
  Search
 
    Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
    Access Statistics
    Email Alert *
    Add to My List *
* Registration required (free)  

 
  In this article
    References

 Article Access Statistics
    Viewed706    
    Printed17    
    Emailed0    
    PDF Downloaded204    
    Comments [Add]    

Recommend this journal