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Hernández-Banqué C, Jové-Juncà T, Crespo-Piazuelo D, González-Rodríguez O, Ramayo-Caldas Y, Esteve-Codina A, Mercat MJ, Bink MCAM, Quintanilla R, Ballester M. Mutations on a conserved distal enhancer in the porcine C-reactive protein gene impair its expression in liver. Front Immunol 2023; 14:1250942. [PMID: 37781386 PMCID: PMC10539928 DOI: 10.3389/fimmu.2023.1250942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/28/2023] [Indexed: 10/03/2023] Open
Abstract
C-reactive protein (CRP) is an evolutionary highly conserved protein. Like humans, CRP acts as a major acute phase protein in pigs. While CRP regulatory mechanisms have been extensively studied in humans, little is known about the molecular mechanisms that control pig CRP gene expression. The main goal of the present work was to study the regulatory mechanisms and identify functional genetic variants regulating CRP gene expression and CRP blood levels in pigs. The characterization of the porcine CRP proximal promoter region revealed a high level of conservation with both cow and human promoters, sharing binding sites for transcription factors required for CRP expression. Through genome-wide association studies and fine mapping, the most associated variants with both mRNA and protein CRP levels were localized in a genomic region 39.3 kb upstream of CRP. Further study of the region revealed a highly conserved putative enhancer that contains binding sites for several transcriptional regulators such as STAT3, NF-kB or C/EBP-β. Luciferase reporter assays showed the necessity of this enhancer-promoter interaction for the acute phase induction of CRP expression in liver, where differences in the enhancer sequences significantly modified CRP activity. The associated polymorphisms disrupted the putative binding sites for HNF4α and FOXA2 transcription factors. The high correlation between HNF4α and CRP expression levels suggest the participation of HNF4α in the regulatory mechanism of porcine CRP expression through the modification of its binding site in liver. Our findings determine, for the first time, the relevance of a distal regulatory element essential for the acute phase induction of porcine CRP in liver and identify functional polymorphisms that can be included in pig breeding programs to improve immunocompetence.
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Affiliation(s)
- Carles Hernández-Banqué
- Animal Breeding and Genetics Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Teodor Jové-Juncà
- Animal Breeding and Genetics Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Daniel Crespo-Piazuelo
- Animal Breeding and Genetics Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Olga González-Rodríguez
- Animal Breeding and Genetics Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Yuliaxis Ramayo-Caldas
- Animal Breeding and Genetics Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Anna Esteve-Codina
- CNAG-CRG, Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | | | | | - Raquel Quintanilla
- Animal Breeding and Genetics Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
| | - Maria Ballester
- Animal Breeding and Genetics Program, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Spain
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Sitompul SI, Pikir BS, Kencono Wungu CD, Supandi SK, Sinta ME. Analysis of the Effects of IL-6 -572 C/G, CRP -757 A/G, and CRP -717 T/C Gene Polymorphisms; IL-6 Levels; and CRP Levels on Chronic Periodontitis in Coronary Artery Disease in Indonesia. Genes (Basel) 2023; 14:genes14051073. [PMID: 37239434 DOI: 10.3390/genes14051073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/04/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Interleukin 6 (IL-6) and C-Reactive Protein (CRP) play an important role in chronic periodontitis with coronary artery disease (CAD). Genetic factors can affect a person's risk of CAD, which affects one-third of the population. This study investigated the role of IL-6 -572 C/G, CRP -757 A/G, and CRP -717 T/C gene polymorphisms. IL-6 and CRP levels on the severity of periodontitis in CAD in Indonesia were also evaluated. This case-control study was conducted with mild and moderate-severe chronic periodontitis groups. A path analysis test was conducted with Smart PLS with a 95% confidence interval to determine the significant variable for chronic periodontitis. Our study revealed that the effects of IL-6 -572 C/G, CRP -757 A/G, and CRP -717 T/C gene polymorphisms on IL-6 levels and CRP levels were not significant. IL-6 and CRP levels were not significantly different between the two groups. We found that IL-6 levels had a significant effect on CRP levels in periodontitis patients with CAD (path coefficient 0.322, p = 0.003). IL-6 -572 C/G, CRP -757 A/G, and CRP -717 T/C gene polymorphisms had no effect on the severity of chronic periodontitis in CAD patients in the Indonesian population. We also observed no apparent effects of the influence of gene polymorphisms in IL-6 -572 C/G, CRP -757 A/G, and CRP -717 T/C genes. Although the IL-6 and CRP levels were not significantly different between the two groups, IL-6 levels affected CRP levels in periodontitis patients with CAD.
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Affiliation(s)
- Sanggap Indra Sitompul
- Doctoral Program of Medical Science, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, Indonesia
- Medical Staff Group of Cardiology, Doris Sylvanus Hospital, Palangka Raya 73111, Indonesia
| | - Budi Susetyo Pikir
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, Indonesia
| | - Citrawati Dyah Kencono Wungu
- Department of Physiology and Medical Biochemistry, Faculty of Medicine, Universitas Airlangga, Surabaya 60132, Indonesia
| | - Shafira Kurnia Supandi
- Department of Periodontics, Faculty of Dental Medicine, Universitas Airlangga, Surabaya 60132, Indonesia
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3
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Williams PT. Quantile-dependent expressivity of serum C-reactive protein concentrations in family sets. PeerJ 2021; 9:e10914. [PMID: 33628645 PMCID: PMC7894107 DOI: 10.7717/peerj.10914] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
Background “Quantile-dependent expressivity” occurs when the effect size of a genetic variant depends upon whether the phenotype (e.g., C-reactive protein, CRP) is high or low relative to its distribution. We have previously shown that the heritabilities (h2) of coffee and alcohol consumption, postprandial lipemia, lipoproteins, leptin, adiponectin, adiposity, and pulmonary function are quantile-specific. Whether CRP heritability is quantile-specific is currently unknown. Methods Serum CRP concentrations from 2,036 sibships and 6,144 offspring-parent pairs were analyzed from the Framingham Heart Study. Quantile-specific heritability from full-sib (βFS, h2 ={(1 + 8rspouseβFS)0.5 − 1}/(2rspouse)) and offspring-parent regression slopes (βOP, h2 = 2βOP/(1 + rspouse)) were estimated robustly by quantile regression with nonparametric significance determined from 1,000 bootstrap samples. Results Quantile-specific h2 (±SE) increased with increasing percentiles of the offspring’s age- and sex-adjusted CRP distribution when estimated from βOP (Ptrend = 0.0004): 0.02 ± 0.01 at the 10th, 0.04 ± 0.01 at the 25th, 0.10 ± 0.02 at the 50th, 0.20 ± 0.05 at the 75th, and 0.33 ± 0.10 at the 90th percentile, and when estimated from βFS (Ptrend = 0.0008): 0.03±0.01 at the 10th, 0.06 ± 0.02 at the 25th, 0.14 ± 0.03 at the 50th, 0.24 ± 0.05 at the 75th, and 0.53 ± 0.21 at the 90th percentile. Conclusion Heritability of serum CRP concentration is quantile-specific, which may explain or contribute to the inflated CRP differences between CRP (rs1130864, rs1205, rs1800947, rs2794521, rs3091244), FGB (rs1800787), IL-6 (rs1800795, rs1800796), IL6R (rs8192284), TNF-α (rs1800629) and APOE genotypes following CABG surgery, stroke, TIA, curative esophagectomy, intensive periodontal therapy, or acute exercise; during acute coronary syndrome or Staphylococcus aureus bacteremia; or in patients with chronic rheumatoid arthritis, diabetes, peripheral arterial disease, ankylosing spondylitis, obesity or inflammatory bowel disease or who smoke.
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Affiliation(s)
- Paul T Williams
- Molecular Biophysics & Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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Sabbah MS, Fayyaz AU, de Denus S, Felker GM, Borlaug BA, Dasari S, Carter RE, Redfield MM. Obese-Inflammatory Phenotypes in Heart Failure With Preserved Ejection Fraction. Circ Heart Fail 2020; 13:e006414. [PMID: 32809874 DOI: 10.1161/circheartfailure.119.006414] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Comorbidity-driven microvascular inflammation is posited as a unifying pathophysiologic mechanism for heart failure with preserved ejection fraction (HFpEF). Obesity is proinflammatory and common in HFpEF. We hypothesized that unique obesity-inflammation HFpEF phenotypes exist and are associated with differences in clinical features, fibrosis biomarkers, and functional performance. METHODS Patients (n=301) from 3 HFpEF clinical trials were studied. Unsupervised machine learning (hierarchical clustering) with obese status and 13 inflammatory biomarkers as input variables was performed. Associations of clusters with HFpEF severity and fibrosis biomarkers (PIIINP [procollagen III N-terminal peptide], CITP [C-telopeptide for type I collagen], IGFBP7 [insulin-like growth factor-binding protein-7], and GAL-3 [galectin-3]) were assessed. RESULTS Hierarchical clustering revealed 3 phenotypes: pan-inflammatory (n=129; 64% obese), noninflammatory (n=83; 55% obese), and obese high CRP (C-reactive protein; n=89; 98% obese). The pan-inflammatory phenotype had more comorbidities and heart failure hospitalizations; higher left atrial volume, NT-proBNP (N-terminal pro-B-type natriuretic peptide), and fibrosis biomarkers; and lower glomerular filtration rate, peak oxygen consumption, 6-minute walk distance, and active hours/day (P<0.05 for all). The noninflammatory phenotype had the most favorable values for all measures. The obese high CRP phenotype resembled the noninflammatory phenotype except for isolated elevation of CRP and lower functional performance. Hierarchical cluster assignment was independent of CRP genotype combinations that alter CRP levels and more biologically plausible than other clustering approaches. Multiple traditional analytic techniques confirmed and extended the hierarchical clustering findings. CONCLUSIONS Unique obesity-inflammation phenotypes exist in HFpEF and are associated with differences in comorbidity burden, HFpEF severity, and fibrosis. These data support comorbidity-driven microvascular inflammation as a pathophysiologic mechanism for many but not all HFpEF patients.
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Affiliation(s)
- Michael S Sabbah
- Department of Cardiovascular Disease (M.S.S., A.U.F., B.A.B., M.M.R.), Mayo Clinic, Rochester, MN.,Center for Regenerative Medicine (M.S.S.), Mayo Clinic, Rochester, MN
| | - Ahmed U Fayyaz
- Department of Cardiovascular Disease (M.S.S., A.U.F., B.A.B., M.M.R.), Mayo Clinic, Rochester, MN
| | - Simon de Denus
- Research Centre, Montreal Heart Institute, QC, Canada (S.d.D.).,Université de Montréal Beaulieu-Saucier Pharmacogenomics Center, QC, Canada (S.d.D.).,Department of Pharmacy, Université de Montréal, QC, Canada (S.d.D.)
| | - G Michael Felker
- Duke Clinical Research Institute, Duke University, Durham, NC (G.M.F.)
| | - Barry A Borlaug
- Department of Cardiovascular Disease (M.S.S., A.U.F., B.A.B., M.M.R.), Mayo Clinic, Rochester, MN
| | - Surendra Dasari
- Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL (S.D., R.E.C.)
| | - Rickey E Carter
- Department of Health Sciences Research, Mayo Clinic, Jacksonville, FL (S.D., R.E.C.)
| | - Margaret M Redfield
- Department of Cardiovascular Disease (M.S.S., A.U.F., B.A.B., M.M.R.), Mayo Clinic, Rochester, MN
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Pan HY, Mi YY, Xu K, Zhang Z, Wu H, Zhang W, Yuan W, Shi L, Zhang LF, Zhu LJ, Zuo L. Association of C-reactive protein (CRP) rs1205 and rs2808630 variants and risk of cancer. J Cell Physiol 2020; 235:8571-8584. [PMID: 32329054 DOI: 10.1002/jcp.29701] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/28/2020] [Accepted: 03/31/2020] [Indexed: 01/08/2023]
Abstract
The correlation between rs1205, rs2808630 variants of C-reactive protein (CRP) gene and susceptibility of cancer has been assessed previously, but with conflicting results. We adopted odds ratios (ORs) with 95% confidence intervals (CIs), in silico tools and enzyme-linked immunosorbent assay (ELISA) analysis to evaluate this association. Totally, 10,614 cancer subjects and 33,294 controls were involved in the pooled analysis. When all the studies were pooled, no significant correlation was indicated between the two variants and cancer risk. However, in stratification analysis by ethnicity, we found that CRP rs1205 C>T polymorphism was associated with an elevated risk of cancer in Asians (T-allele vs. C-allele, OR = 1.20, 95% CI = 1.06-1.36, pheterogeneity = .226; TT vs. CC, OR = 1.48, 95% CI = 1.14-1.93, pheterogeneity = .089). Similar findings were observed for rs2808630 variant. In silico tools showed that lung adenocarcinoma participants with high CRP expression may have shorter overall survival time than low expression group. ELISA analysis indicated that CRP expression in prostate adenocarcinoma subjects with TT + TC genotypes was statistically higher than in those with CC genotypes. CRP rs1205 C>T and rs2808630 T>C polymorphism may be associated with cancer risk, especially for Asians.
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Affiliation(s)
- Hai-Yan Pan
- Department of Urology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Yuan-Yuan Mi
- Department of Urology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Kai Xu
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Ze Zhang
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Hao Wu
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Wei Zhang
- Department of Oncology, Taizhou People's Hospital, Taizhou, China
| | - Wei Yuan
- Department of Cardiology, Taizhou People's Hospital, Taizhou, China
| | - Li Shi
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Li-Feng Zhang
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Li-Jie Zhu
- Department of Urology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Li Zuo
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
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Searching for the Genetic Determinants of Peripheral Arterial Disease: A Review of the Literature and Future Directions. Cardiol Rev 2019; 27:145-152. [PMID: 30946061 DOI: 10.1097/crd.0000000000000231] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Peripheral arterial disease (PAD) is a significant but under-recognized disease that is poorly understood despite population-scale genetic studies. To address this morbid disease, clinicians need additional tools to identify, prevent, and treat patients at risk for PAD. Genetic studies of coronary artery disease have yielded promising results for clinical application, which have thus far been lacking in PAD. In this article, we review recent findings, discuss limitations, and propose future directions of genomic study and clinical application. However, despite many studies, we still lack definitive genetic markers for PAD. This can be attributed to the heterogeneity of PAD's pathogenesis and clinical manifestations, as well as inconsistencies in study methodologies, limitations of current genetic assessment techniques, incompletely comprehended molecular pathophysiology, and confounding generalized atherosclerotic risk factors. The goals of this review are to evaluate the limitations of our current genetic knowledge of PAD and to propose approaches to expedite the identification of valuable markers of PAD.
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Delongui F, Lozovoy MAB, Iriyoda TMV, Costa NT, Stadtlober NP, Alfieri DF, Flauzino T, Dichi I, Simão ANC, Reiche EMV. C-reactive protein +1444CT (rs1130864) genetic polymorphism is associated with the susceptibility to systemic lupus erythematosus and C-reactive protein levels. Clin Rheumatol 2017; 36:1779-1788. [DOI: 10.1007/s10067-017-3695-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 04/24/2017] [Accepted: 05/18/2017] [Indexed: 02/02/2023]
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8
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Navarro P, de Dios O, Gavela-Pérez T, Soriano-Guillen L, Garcés C. Relationship between polymorphisms in the CRP, LEP and LEPR genes and high sensitivity C-reactive protein levels in Spanish children. ACTA ACUST UNITED AC 2017; 55:1690-1695. [DOI: 10.1515/cclm-2017-0134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 02/19/2017] [Indexed: 01/19/2023]
Abstract
AbstractBackground:We investigated the association of single nucleotide polymorphisms (SNPs) in the C-reactive protein (Methods:We measured hs-CRP levels in 646 6–8-year-old and 707 12–16-year-old children using a high-sensitivity C-Reactive Protein ELISA kit. Four SNPs in theResults:The four CRP SNPs studied were significantly (p<0.05) associated with hs-CRP levels in both cohorts. Furthermore, two common CRP haplotypes (constructed using the SNPs in order: rs1205, rs1130864, rs1800947, rs2794521) ACGA and GCGG were associated with significantly lower CRP levels (p<0.05) at both ages. The LEPR SNPs rs1137100 (K109R) and rs1137101 (Q223R), and LEP SNP rs7799039 (G2548A) were also associated to hs-CRP levels (p<0.05) in both cohorts.Conclusions:hs-CRP levels in healthy Spanish children, besides being associated to common polymorphisms in the
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Iborra M, Beltrán B, Nos P. Noninvasive Testing for Mucosal Inflammation in Inflammatory Bowel Disease. Gastrointest Endosc Clin N Am 2016; 26:641-56. [PMID: 27633593 DOI: 10.1016/j.giec.2016.06.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Biomarkers have gained increasing attention for the diagnosis and follow-up of inflammatory bowel disease (IBD). Endoscopy remains the gold standard for assessing disease activity. Biomarkers are rapid, inexpensive, and noninvasive, and can be used in different stages of the disease with high sensitivity and specificity. Calprotectin and tests for C-reactive protein are used to assess the disease activity, predict relapse, and monitor treatment response. New noninvasive tests are being studied. This review discusses current evidence for these surrogate markers, their potential clinical applications, and limitations in disease management. We highlight recent advances in IBD biomarkers and future uses.
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Affiliation(s)
- Marisa Iborra
- Gastroenterology Department, Department of Digestive Disease, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), La Fe University and Polytechnic Hospital, Av. Fernando Abril Martorell, 106, Valencia 46026, Spain
| | - Belén Beltrán
- Gastroenterology Department, Department of Digestive Disease, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), La Fe University and Polytechnic Hospital, Av. Fernando Abril Martorell, 106, Valencia 46026, Spain
| | - Pilar Nos
- Gastroenterology Department, Department of Digestive Disease, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), La Fe University and Polytechnic Hospital, Av. Fernando Abril Martorell, 106, Valencia 46026, Spain.
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10
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Sands BE. Biomarkers of Inflammation in Inflammatory Bowel Disease. Gastroenterology 2015; 149:1275-1285.e2. [PMID: 26166315 DOI: 10.1053/j.gastro.2015.07.003] [Citation(s) in RCA: 253] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 07/02/2015] [Accepted: 07/06/2015] [Indexed: 02/07/2023]
Abstract
Recent observations suggest that subjective measures of disease activity in inflammatory bowel disease (IBD) are often misleading. Objective measures of inflammation are more closely associated with important long-term outcomes, but often depend upon invasive and costly procedures such as ileocolonoscopy and cross-sectional imaging by computed tomography or magnetic resonance imaging. Noninvasive, accurate, and inexpensive measures of intestinal inflammation would allow clinicians to adopt widely the paradigm of adjusting therapies with a goal of controlling inflammation. Blood, stool, and urine markers have all been explored as indicators of intestinal inflammation in IBD, and although none has been universally adopted, some have been well-characterized, and others hold great promise. Serum C-reactive protein and fecal calprotectin are among the best-studied noninvasive biomarkers of inflammation in IBD, and their test characteristics have been described in the setting of differentiating IBD from irritable bowel syndrome, for grading inflammation, to describe the response to therapy, and in demonstrating recurrent inflammation after medical or surgically induced remission. High-throughput research platforms, including gene expression arrays, metabolomics and proteomics, are also being applied to the discovery of novel biomarkers of inflammation. It is certain that biomarkers of inflammation will attain growing importance in the clinic as we strive for more effective and cost-effective strategies to treat patients with IBD.
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Affiliation(s)
- Bruce E Sands
- Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York.
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11
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Chen Z, Yu D, Xu ZW, Li SS, Li XF, Li J, Yang X. C-reactive protein gene polymorphisms and gene-environment interactions in ischaemic stroke. Neurol Res 2015; 37:979-84. [DOI: 10.1179/1743132815y.0000000053] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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12
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Vaez A, Jansen R, Prins BP, Hottenga JJ, de Geus EJC, Boomsma DI, Penninx BWJH, Nolte IM, Snieder H, Alizadeh BZ. In Silico Post Genome-Wide Association Studies Analysis of C-Reactive Protein Loci Suggests an Important Role for Interferons. ACTA ACUST UNITED AC 2015; 8:487-97. [PMID: 25752597 DOI: 10.1161/circgenetics.114.000714] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 02/18/2015] [Indexed: 12/17/2022]
Abstract
BACKGROUND Genome-wide association studies (GWASs) have successfully identified several single nucleotide polymorphisms (SNPs) associated with serum levels of C-reactive protein (CRP). An important limitation of GWASs is that the identified variants merely flag the nearby genomic region and do not necessarily provide a direct link to the biological mechanisms underlying their corresponding phenotype. Here we apply a bioinformatics-based approach to uncover the functional characteristics of the 18 SNPs that had previously been associated with CRP at a genome-wide significant level. METHODS AND RESULTS In the first phase of in silico sequencing, we explore the vicinity of GWAS SNPs to identify all linked variants. In the second phase of expression quantitative trait loci analysis, we attempt to identify all nearby genes whose expression levels are associated with the corresponding GWAS SNPs. These 2 phases generate several relevant genes that serve as input to the next phase of functional network analysis. Our in silico sequencing analysis using 1000 Genomes Project data identified 7 nonsynonymous SNPs, which are in moderate to high linkage disequilibrium (r(2)>0.5) with the GWAS SNPs. Our expression quantitative trait loci analysis, which was based on one of the largest single data sets of genome-wide expression probes (n>5000) identified 23 significantly associated expression probes belonging to 15 genes (false discovery rate <0.01). The final phase of functional network analysis revealed 93 significantly enriched biological processes (false discovery rate <0.01). CONCLUSIONS Our post-GWAS analysis of CRP GWAS SNPs confirmed the previously known overlap between CRP and lipids biology. Additionally, it suggested an important role for interferons in the metabolism of CRP.
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Affiliation(s)
- Ahmad Vaez
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.).
| | - Rick Jansen
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.)
| | - Bram P Prins
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.)
| | - Jouke-Jan Hottenga
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.)
| | - Eco J C de Geus
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.)
| | - Dorret I Boomsma
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.)
| | - Brenda W J H Penninx
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.)
| | - Ilja M Nolte
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.)
| | - Harold Snieder
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.)
| | - Behrooz Z Alizadeh
- From the Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen (A.V., B.P.P., I.M.N., H.S., B.Z.A.); Department of Psychiatry, VU University Medical Center, Amsterdam (R.J., B.W.J.H.P.); and Neuroscience Campus Amsterdam, VU University and VU University Medical Center, Amsterdam (R.J., J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), EMGO+ Institute, VU University and VU University Medical Center, Amsterdam (J.-J.H., E.J.C.d.G., D.I.B., B.W.J.H.P.), Department of Biological Psychology, VU University, Amsterdam, the Netherlands (J.-J.H., E.J.C.d.G., D.I.B.); and School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran (A.V.).
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The Relationship Between CRP Gene Polymorphism and the Serum Concentrations of C-Reactive Protein, Total Cholesterol and HDL Cholesterol in Suckling Piglets / Związek polimorfizmu genu CRP z koncentracją kodowanego białka C-reaktywnego, cholesterolu całkowitego i HDL-ch w surowicy krwi ssących prosiąt. ANNALS OF ANIMAL SCIENCE 2013. [DOI: 10.2478/aoas-2013-0033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AbstractThe relationship between CRP gene (1271 G/A, 3’UTR) polymorphism and the serum levels of C-reactive protein (CRP), total cholesterol (Ch-T) and high density lipoprotein cholesterol (HDL-ch) was analysed in suckling crossbred [Polish Large White × Polish Landrace (♀) × × Duroc × Pietrain (♂)] piglets. CRP genotypes were identified by PCR-RFLP with Hinfi restriction enzyme. The levels of CRP, Ch-T, HDL-ch and white blood cell (WBC) counts were determined in blood samples collected from younger (21±3 days of age) and older piglets (35±3 days of age). There was a relationship between CRP gene (1271 G/A, 3’UTR) polymorphism and variations in the serum levels of CRP in piglets with normal WBC counts. The above relationship did not manifest itself in piglets with elevated WBC counts. The studied genotypes differed in their response to elevated WBC counts, and the noted differences were more pronounced in older piglets. The response of genotypes with weak CRP expression caused an increase in CRP levels and a decrease in the serum concentrations of Ch-T and HDL-ch. Such a response was not observed in the genotype with strong CRP expression.
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Gupta S, Gupta VK, Gupta R, Arora S, Gupta V. Relationship of high-sensitive C-reactive protein with cardiovascular risk factors, clinical presentation and angiographic profile in patients with acute coronary syndrome: an Indian perspective. Indian Heart J 2013; 65:359-65. [PMID: 23809399 DOI: 10.1016/j.ihj.2013.04.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Revised: 11/17/2012] [Accepted: 04/25/2013] [Indexed: 11/25/2022] Open
Affiliation(s)
- Sharad Gupta
- Consultant Cardiologist, Max Super Specialty Hospital, Bathinda, Punjab, India
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Pinato DJ, Bains J, Irkulla S, Pomroy J, Ujam B, Gaze D, Mendall MA. Advanced age influences the dynamic changes in circulating C-reactive protein following injury. J Clin Pathol 2013; 66:695-9. [DOI: 10.1136/jclinpath-2012-201374] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Delongui F, Kallaur AP, Oliveira SR, Bonametti AM, Grion CMC, Morimoto HK, Simão ANC, Magalhães GG, Reiche EMV. Serum levels of high sensitive C reactive protein in healthy adults from southern Brazil. J Clin Lab Anal 2013; 27:207-10. [PMID: 23426911 DOI: 10.1002/jcla.21585] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Accepted: 01/11/2013] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND With the emergence of more sensitive assay techniques, it has been shown that C reactive protein (CRP) is present at low levels in the serum of all the clinically healthy individuals. OBJECTIVE To determine the interval values of high-sensitivity CRP (hs-CRP) in healthy adults. METHODS Serum hs-CRP level was evaluated in 176 healthy blood donors. RESULTS The serum hs-CRP level ranged from <0.175 to 48.7 mg/l (median 1.2 mg/l); 127 (72.2%) individuals exhibited values ≥0.175 and <3.0 mg/l and 31 (17.6%) showed values >3.0 and ≤10.0 mg. Higher hs-CRP level was observed among the female than male (P = 0.0001), and among the older than the younger individuals (P = 0.0180). Individuals with body mass index ≥25.0 kg/m(2) exhibited higher hs-CRP level than those with normal weight (18.5-24.9 kg/m(2) ; P < 0.0005). When the participants were stratified into gender and low (≤24.9 kg/m(2) ) and high (≥24.9 kg/m(2) ) body mass index (BMI) groups, the gender difference in hs-CRP levels remained (female with low BMI vs. male with low BMI, P = 0.0221; female with high BMI vs. male with high BMI, P = 0.0001). CONCLUSION Gender, age, and BMI influence serum hs-CRP level in healthy individuals and these variables should be considered for the interpretation of hs-CRP values. The results reinforce the importance in evaluating whether these differences in hs-CRP levels could contribute to alter the cardiovascular risk criteria and clinical outcomes, and whether hs-CRP thresholds for cardiovascular risk assessment should be adjusted for different gender and body mass index groups.
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Affiliation(s)
- Francieli Delongui
- Postgraduate Program, Health Sciences Center, State University of Londrina, Londrina, Paraná, Brazil
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Stewart LK, Earnest CP, Blair SN, Church TS. Effects of different doses of physical activity on C-reactive protein among women. Med Sci Sports Exerc 2011; 42:701-7. [PMID: 19952829 DOI: 10.1249/mss.0b013e3181c03a2b] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
UNLABELLED Elevated C-reactive protein (CRP) is associated with an increased risk of cardiovascular disease. Physical activity has been inversely associated with CRP. However, the clinical trials examining the effect of exercise training have produced conflicting results. PURPOSE The purpose of this study was to examine the influence an exercise training program on CRP in postmenopausal women. METHODS Sedentary, overweight, or obese postmenopausal women with elevated systolic blood pressure (120-160 mm Hg; n = 464) were randomized into one of four groups: a nonexercise control or one of three aerobic exercise groups; exercise energy expenditure of 4, 8, or 12 kcal·kg(-1)·wk(-1) (KKW) for 6 months at a training intensity of 50% of peak VO2. RESULTS Complete data for 421 participants were available, and mean (SD) baseline CRP was 5.7 (5.5) mg·L(-1), with no significant differences across groups. Although VO2 increased in a dose-response manner, there were no significant changes in CRP in any of the exercise intervention groups compared with the control group. Change in fitness was not associated with change in CRP, whereas change in weight was significantly associated with change in CRP. CONCLUSIONS Despite increasing fitness, 6 months of aerobic exercise training did not improve CRP. However, improvements in CRP were associated with reductions in weight.
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Delongui F, Carvalho Grion CM, Ehara Watanabe MA, Morimoto HK, Bonametti AM, Maeda Oda JM, Kallaur AP, Matsuo T, Reiche EM. Association of tumor necrosis factor β genetic polymorphism and sepsis susceptibility. Exp Ther Med 2011; 2:349-356. [PMID: 22977509 DOI: 10.3892/etm.2011.213] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Accepted: 01/11/2011] [Indexed: 12/11/2022] Open
Abstract
The association of the tumor necrosis factor β (TNF-β) Nco1 genetic polymorphism with susceptibility to sepsis was evaluated in 60 consecutive patients diagnosed with sepsis and in 148 healthy blood donors. Genomic DNA was extracted from peripheral blood cells and a 782 base-pair fragment of the TNF-β gene was amplified by PCR. The PCR products were subjected to Nco1 restriction digestion and analysed by restriction fragment length polymorphism analysis. Tumor necrosis factor α (TNF-α) and the C-reactive protein (CRP) serum levels were also determined by ELISA and nephelometry, respectively. Among the septic patients, the allelic frequencies of TNFB1 and TNFB2 were 0.2833 and 0.7166, respectively, and they differed from those observed in the blood donors (p=0.0282). The TNFB2 allele frequency was higher in the septic patients than in the blood donors [odds ratio=1.65 (CI 95% 1.02-2.69), p=0.0315]. The TNF-α and CRP serum levels and the APACHE II and SOFA clinical scores did not differ in the patients with the TNFB1 or TNFB2 alleles (p>0.05). The results suggest that the TNFB2 allele is associated with susceptibility to sepsis, but it was not found to be associated with the immunological and clinical biomarkers of the disease.
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Chaturvedi AK, Caporaso NE, Katki HA, Wong HL, Chatterjee N, Pine SR, Chanock SJ, Goedert JJ, Engels EA. C-reactive protein and risk of lung cancer. J Clin Oncol 2010; 28:2719-26. [PMID: 20421535 DOI: 10.1200/jco.2009.27.0454] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Chronic inflammation could play a role in lung carcinogenesis, underscoring the potential for lung cancer prevention and screening. We investigated the association of circulating high-sensitivity C-reactive protein (CRP, an inflammation biomarker) and CRP single nucleotide polymorphisms (SNPs) with prospective lung cancer risk. PATIENTS AND METHODS We conducted a nested case-control study of 592 lung cancer patients and 670 controls with available prediagnostic serum and 378 patients and 447 controls with DNA within the screening arm of the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (N = 77,464). Controls were matched to patients on age, sex, entry year, follow-up time, and smoking. We measured CRP levels in baseline serum samples and genotyped five common CRP SNPs. RESULTS Elevated CRP levels were associated with increased lung cancer risk (odds ratio [OR], 1.98; 95% CI, 1.35 to 2.89; P-trend < .001 for fourth quartile [Q4, > or = 5.6 mg/L] v Q1 [< 1.0 mg/L]). The CRP association did not differ significantly by histology, follow-up time, or smoking status, but was most apparent for squamous cell carcinomas (OR, 2.92; 95% CI, 1.30 to 6.54), 2 to 5 years before lung cancer diagnosis (OR, 2.33; 95% CI, 1.24 to 4.39), and among former smokers (OR, 2.48; 95% CI, 1.53 to 4.03) and current smokers (OR, 1.90; 95% CI, 1.06 to 3.41). Although CRP SNPs and haplotypes were associated with CRP levels, they were not associated with lung cancer risk. Ten-year standardized absolute risks of lung cancer were higher with elevated CRP levels among former smokers (Q4: 2.55%; 95% CI, 1.98% to 3.27% v Q1: 1.39%; 95% CI, 1.07% to 1.81%) and current smokers (Q4: 7.37%; 95% CI, 5.81% to 9.33% v Q1: 4.03%; 95% CI, 3.01% to 5.40%). CONCLUSION Elevated CRP levels are associated with subsequently increased lung cancer risk, suggesting an etiologic role for chronic pulmonary inflammation in lung carcinogenesis.
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Affiliation(s)
- Anil K Chaturvedi
- Infections and Immunoepidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 6120 Executive Blvd., Rockville, MD 20852, USA.
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Hubacek JA, Peasey A, Pikhart H, Stavek P, Kubinova R, Marmot M, Bobak M. APOE polymorphism and its effect on plasma C-reactive protein levels in a large general population sample. Hum Immunol 2010; 71:304-8. [PMID: 20074603 PMCID: PMC2837141 DOI: 10.1016/j.humimm.2010.01.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2009] [Revised: 12/23/2009] [Accepted: 01/07/2010] [Indexed: 01/26/2023]
Abstract
The published data remain inconsistent on association between apolipoprotein E (APOE) gene variations and plasma levels of C-reactive protein (CRP), mainly because of low statistical power of previous studies. To clarify this question, we analyzed data from large population sample of randomly selected individuals from seven Czech towns (2,886 males and 3,344 females, the HAPIEE [Health, Alcohol, and Psychosocial factors In Eastern Europe] study). In both males and females, the lowest levels of plasma hsCRP were observed in the carriers of the APOE epsilon 4 epsilon 4 and epsilon 4 epsilon 3 genotypes. The median (interquartile range, IQR) concentration of hsCRP in carriers of the most common APOE epsilon 3 epsilon 3 genotype (two-thirds of participants) was 1.13 mg/l (IQR, 0.56-2.33) in men and 1.23 mg/l (IQR, 0.61-2.65) in women, compared with 0.72 mg/l (IQR, 0.61-0.86) in male and 0.72 mg/l (IQR, 0.61-0.85) in female carriers of APOE epsilon 4 epsilon 3/epsilon 4 epsilon 4 genotypes; the differences were statistically significant (p < 0.001). The association between APOE and CRP was not materially affected by adjustment for age, sex, history of cardiovascular disease, or cardiovascular risk factors. This study, the largest to date, provides robust evidence of an association between plasma hsCRP and the APOE genotype, an association not explained by history of cardiovascular disease nor its risk factors.
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Affiliation(s)
- Jaroslav A. Hubacek
- Institute of Clinical and Experimental Medicine, Prague, Czech Republic
- Centre for Cardiovascular Research, Prague, Czech Republic
- South Bohemia University, Faculty of Public Health and Social Studies, Ceske Budejovice, Czech Republic
| | - Anne Peasey
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Hynek Pikhart
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Petr Stavek
- Institute of Clinical and Experimental Medicine, Prague, Czech Republic
| | | | - Michael Marmot
- Department of Epidemiology and Public Health, University College London, London, UK
| | - Martin Bobak
- Department of Epidemiology and Public Health, University College London, London, UK
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Saleh N, Kovacs A, Tornvall P. Relevance of genetic polymorphisms in inflammatory response to percutaneous coronary intervention. Scandinavian Journal of Clinical and Laboratory Investigation 2009; 69:736-40. [DOI: 10.3109/00365510903100466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
BACKGROUND Cigarette smoking is a classical and a major risk factor in the development of several diseases with an inflammatory component, including cardiovascular disease and chronic obstructive pulmonary disease. Improvements in assays for protein markers of inflammation have led to many studies on these factors and their roles in disease. AIMS C-reactive protein (CRP) is one such marker and this review focuses on the evidence for using CRP as a diagnostic marker and how levels of this protein are modified according to the smoking status of the patient, both in terms of the current amount of cigarettes smoked and how CRP levels change following smoking cessation. CONCLUSIONS Assay of CRP levels may be useful in monitoring disease progression and determining risk of future cardiovascular complications. However, as this marker is also an indicator of acute inflammation and challenges to the immune system, some caution must be exercised in interpreting the available data on CRP levels in patients with different chronic comorbidities.
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Affiliation(s)
- S Tonstad
- School of Medicine, Loma Linda University, Loma Linda, CA 92354, USA.
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Zebeli Q, Ametaj B. Relationships between rumen lipopolysaccharide and mediators of inflammatory response with milk fat production and efficiency in dairy cows. J Dairy Sci 2009; 92:3800-9. [DOI: 10.3168/jds.2009-2178] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Abstract
PURPOSE OF REVIEW Increased plasma levels of C-reactive protein (CRP), a hepatic acute phase reactant, predict risk for coronary heart disease. There has been interest in identifying genetic determinants of CRP as a means of better understanding its regulation and its relation to coronary heart disease. We here review recent findings that have linked plasma CRP levels to single nucleotide polymorphisms in hepatic nuclear factor (HNF) 1-alpha, a transcription factor with a wide range of functions, including many involved in cholesterol, bile acid, and lipoprotein metabolism. RECENT FINDINGS Two genome-wide association studies have identified single nucleotide polymorphisms in several genes that are strongly related to plasma CRP levels, including several on chromosome 12 in the vicinity of the HNF1A gene. The CRP gene promoter has two HNF1-alpha-binding sites. Recently, it has been demonstrated that HNF1-alpha is required for cytokine-driven CRP expression and that this involves formation of a complex with STAT3 and c-Fos. SUMMARY Based on the recent genetic findings as well as delineation of the role of HNF1-alpha in regulating the expression of the CRP gene, it appears that this transcription factor may play a key role in linking metabolic and inflammatory pathways underlying the pathogenesis of coronary heart disease.
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Wilker EH, Alexeeff SE, Poon A, Litonjua AA, Sparrow D, Vokonas PS, Mittleman MA, Schwartz J. Candidate genes for respiratory disease associated with markers of inflammation and endothelial dysfunction in elderly men. Atherosclerosis 2009; 206:480-5. [PMID: 19409562 DOI: 10.1016/j.atherosclerosis.2009.03.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2008] [Revised: 02/19/2009] [Accepted: 03/09/2009] [Indexed: 01/27/2023]
Abstract
BACKGROUND Inflammation and endothelial dysfunction are important risk factors for cardiovascular disease (CVD). We hypothesized that candidate genes selected for a study of asthma and chronic obstructive pulmonary disorder (COPD) are associated with markers of systemic inflammation and endothelial dysfunction in an aging population. METHODS Plasma levels of circulating C-reactive protein (CRP), fibrinogen, intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) were obtained from 679 elderly male participants in the Normative Aging Study. Blood samples were analyzed for 202 single nucleotide polymorphisms (SNPs) in 25 candidate genes and included both haplotype tagSNPs and functional SNPs based on literature review. Data were stratified into discovery and replication cohorts for 2-stage analysis. In the discovery cohort, the relationship between biomarker level and genotype was analyzed using linear mixed effects with random intercepts for each subject and models were adjusted for age and BMI. A positive outcome in the discovery cohort was defined as a p-value <0.1 for the SNP. SNPs that met this criterion were analyzed in the replication cohort and confirmed for those which met a criterion of significance (p<0.025). RESULTS In our analyses, SNPs in the CRHR1, ITPR2, and VDR genes met significance criteria. CONCLUSIONS Our results suggest that genes thought to play a role in the pathogenesis of asthma and COPD may influence levels of serum markers of inflammation and endothelial dysfunction via novel SNP associations which have not previously been associated with cardiovascular disease.
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Affiliation(s)
- Elissa H Wilker
- Department of Environmental Health, Harvard School of Public Health, Boston, MA 02215, United States
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Hage FG, Szalai AJ. The role of C-reactive protein polymorphisms in inflammation and cardiovascular risk. Curr Atheroscler Rep 2009; 11:124-30. [DOI: 10.1007/s11883-009-0020-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Eiriksdottir G, Smith AV, Aspelund T, Hafsteinsdottir SH, Olafsdottir E, Launer LJ, Harris TB, Gudnason V. The interaction of adiposity with the CRP gene affects CRP levels: age, gene/environment susceptibilty-Reykjavik study. Int J Obes (Lond) 2009; 33:267-72. [PMID: 19139754 PMCID: PMC3149889 DOI: 10.1038/ijo.2008.274] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Common diseases often have an inflammatory component reflected by associated markers such as serum C-reactive protein (CRP) levels. Circulating CRP levels have also been associated with adipose tissue as well as with specific CRP genotypes. We examined the interaction between measures of body mass index (BMI), waist circumference and fat percent (total fat measured by bioimpedance) with genotypes of the CRP gene in the determination of CRP levels. METHODS The first 2296 participants (mean age 76+/-6 years, 42% men) in the Age, Gene/Environment Susceptibility-Reykjavik Study, a multidisciplinary epidemiological study to determine risk factors in aging, were genotyped for 10 single nucleotide polymorphisms (SNPs) in the CRP gene. General linear models with age and terms for interaction of CRP genotypes with BMI, waist circumference and percent fat were used to evaluate the association of genotypes to CRP levels (high-sensitivity method, range 0-10 mg l(-1)) in men and women separately. RESULTS We focused on the SNP rs1205 that represents the allele that captures the strongest effects of the gene on CRP levels. Carriers of the rs1205 G allele had significantly higher CRP levels than noncarriers in a dose-dependent manner. Compared to the AA genotype, the slope of the increase in CRP with increasing BMI (P=0.045) and waist circumference (P=0.014) was different for the G allele carriers and of similar magnitude in both men and women. The rs1205 interactions were not significant for fat mass percent, suggesting a possible association with fat localization. CONCLUSIONS This study further illuminates the known association between measures of adiposity and CRP levels and is shown to be dependent on variation in the rs1205 SNP of the CRP gene. The correlated increase in CRP levels with adiposity is accentuated by presence of the G allele.
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