scholarly journals ApoE Polymorphism Is Associated With C-Reactive Protein in Low-HDL Family Members and in Normolipidemic Subjects

2006 ◽  
Vol 2006 ◽  
pp. 1-5 ◽  
Author(s):  
Juhani Kahri ◽  
Aino Soro-Paavonen ◽  
Christian Ehnholm ◽  
Marja-Riitta Taskinen

The study was aimed to compare inflammatory parameters between carriers of apoE4 isoforms (apoE4/3, apoE4/2, and apoE4/4 phenotypes) and those of carrying apoE3 isoform without apoE4 isoform (apoE3/3 phenotypes and apoE2/3 phenotypes). The concentrations of serum hsCRP, sVCAM-1, sICAM-1, and sE-selectin were measured in 211 subjects from Finnish low-HDL families and in 157 normolipidemic subjects. The subjects with apoE4 isoform had lower concentrations of serum hsCRP both in low-HDL family members (p<0.05) and in normolipidemic subjects (p<0.01). The differences in serum CRP values remained significant after adjustment for age, BMI, smoking status, hypertension, gender, lipoprotein variables, and family number. We conclude that apoE phenotype has a strong influence on serum CRP values.

2021 ◽  
Vol 11 ◽  
Author(s):  
Jonas Wetterö ◽  
Sarah von Löhneysen ◽  
Flordelyn Cobar ◽  
Margareta Kristenson ◽  
Peter Garvin ◽  
...  

C-reactive protein (CRP), a humoral component of the innate immune system with important functions in host-defense, is extensively used as a sensitive biomarker of systemic inflammation. During inflammation, hepatocyte-derived CRP rises dramatically in the blood due to increased interleukin-6 (IL-6) levels. Reliable detection of CRP in saliva, instead of blood, would offer advantages regarding sampling procedure and availability but using saliva as a diagnostic body fluid comes with challenges. The aims of this study were to evaluate associations between salivary CRP, total protein levels in saliva and serum CRP. Furthermore, we examined associations with plasma IL-6, body mass index (BMI), tobacco smoking and age. Salivary CRP was investigated by ELISA in 107 middle-aged participants from the general population. We employed spectrophotometric determination of total protein levels. Correlation analyses were used for associations of salivary CRP with serum CRP (turbidimetry), plasma IL-6 (Luminex®), BMI and smoking habits. Salivary median CRP was 68% higher (p=0.009), and total protein levels were 167% higher (p&lt;0.0001), in morning compared to evening saliva. The correlation coefficients between serum and salivary CRP were low to moderate, but stronger for evening than morning saliva. Plasma IL-6 correlated significantly with serum CRP (rs=0.41, p&lt;0.01), but not with morning or evening salivary CRP. Non-smokers showed 103% higher salivary CRP levels (p=0.015), whereas serum CRP was independent of smoking status. As opposed to CRP in serum, salivary CRP was not associated with BMI. Salivary CRP was 90% higher among the age interval 60–69 years compared to subjects aged 45–59 (p=0.02) while serum CRP levels did not differ between the age groups. In conclusion, CRP in saliva did not straightforwardly reflect serum concentrations. This raises questions regarding adequate reflection of biological events. The pronounced diurnal salivary CRP pattern accentuates the importance of standardizing the time-point of sampling.


i-Perception ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 204166952110099
Author(s):  
Ingrid Ekström ◽  
Davide Liborio Vetrano ◽  
Goran Papenberg ◽  
Erika J. Laukka

Importance Olfactory deficits are common in aging and associated with several conditions linked to inflammation. A few studies suggest that increased concentration of pro-inflammatory biomarkers may be related to olfactory deficits, but these associations are understudied in population-based samples. Objective To investigate the association between serum concentrations of C-reactive protein (CRP) and olfactory identification level as well as rate of change in aging. Methods We included 1,721 participants (mean age 70.5 years; 61.9% female) with at least two olfactory assessments across the 12-year follow-up. Baseline level and change in odor identification were estimated with linear mixed models as a function of CRP levels, derived from blood plasma at baseline. Results Results indicated a negative dose–response association between CRP level and odor identification scores at baseline, after adjustment for demographic, cognitive, health, and lifestyle factors. CRP levels ranging between 11 and 20 mg/L were significantly related to lower olfactory ability (β = −0.811, 95% confidence interval [CI] [−1.503 to −0.118]; p = .022). Likewise, CRP values above 20 mg/L were related to lower olfactory scores, an association that approached statistical significance (β = −0.996, 95% CI [−2.045 to 0.054]; p = .063). We found no associations between CRP and olfactory change ( ps > .368). Sensitivity analyses showed that associations between CRP and olfaction were confined to younger participants (age ≤72 years) and men ( ps < .034). Conclusions Our findings suggest a negative association between serum CRP levels and olfactory identification ability in aging that may be dependent on age and sex.


Author(s):  
Doruk Akgün ◽  
Mats Wiethölter ◽  
Paul Siegert ◽  
Victor Danzinger ◽  
Marvin Minkus ◽  
...  

Abstract Introduction There is a paucity of literature regarding serum C-reactive protein (CRP) in the evaluation of a shoulder periprosthetic joint infection (PJI). The purpose of the current study was to establish cutoff values for diagnosing shoulder PJI and evaluate the influence of the type of infecting microorganism and the classification subgroups according to last proposed International Consensus Meeting (ICM) criteria on the CRP level. Materials and methods A retrospective analysis of all 136 patients, who underwent septic or aseptic revision shoulder arthroplasty in our institution between January 2010 and December 2019, was performed. Shoulder PJI was defined according to the last proposed definition criteria of the ICM. Serum CRP levels were compared between infected and non-infected cases, between infection subgroups, as well as between different species of infecting microorganisms. A receiver-operating characteristic (ROC) analysis was performed to display sensitivity and specificity of serum CRP level for shoulder PJI. Results A total of 52 patients (38%) were classified as infected, 18 meeting the criteria for definitive infection, 26 for probable infection and 8 for possible infection. According to the ROC curve, an optimized serum CRP threshold of 7.2 mg/l had a sensitivity of 69% and specificity of 74% (area under curve = 0.72). Patients with definitive infection group demonstrated significantly higher median serum CRP levels (24.3 mg/l), when compared to probable, possible infection groups and PJI unlikely group (8 mg/l, 8.3 mg/l, 3.6 mg/l, respectively, p < 0.05). The most common isolated microorganism was Cutibacterium acnes in 25 patients (48%) followed by coagulase-negative staphylococci (CNS) in 20 patients (39%). Patients with a PJI caused by high-virulent microorganisms had a significantly higher median serum CRP level compared to patients with PJI caused by low-virulent microorganisms (48 mg/l vs. 11.3 mg/l, p = 0.04). Conclusions Serum CRP showed a low sensitivity and specificity for the diagnosis of shoulder PJI, even applying cutoffs optimized by receiver-operating curve analysis. Low-virulent microorganisms and patients with probable and possible infections are associated with lower CRP levels compared to patients with definitive infection and infections caused by high-virulent microorganisms. Level of evidence Diagnostic Level III.


2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Makrouhi Sonikian ◽  
Aggeliki Barbatsi ◽  
Eugenia Karakou ◽  
Theodoros Chiras ◽  
Jacob Skarakis ◽  
...  

Abstract Introduction C-reactive protein (CRP) and procalcitonin (PCT) are widely used as markers of inflammation and infection in general population and in chronic hemodialysis (HD) as well. However, in dialysis (D) patients, serum CRP and PCT levels may be elevated even in the absence of inflammatory or infectious disease and diagnostic process is a challenge in such cases. We studied HD patients' laboratory profile concerning CRP and PCT. Subjects and Methods We studied 25 stable HD patients, M/F=22/3, aged 68(44-89) years, dialyzed thrice weekly for 55(6-274) months with a dialysate flow rate of 700 ml/min, with a residual daily diuresis less than 200 ml, Kt/V values of 1,44±0,3 and no signs of infection. Patients were classified in two groups. Group A included 10 patients on pre-dilution online hemodiafiltration (HDF). Group B consisted of 15 patients on conventional HD with low-flux polysulfone membrane. Twenty healthy subjects formed a control group C. Serum CRP and PCT levels were measured in duplicate in A and B groups before and at the end of mid-week dialysis sessions and also in C group. Results Pre-D serum CRP values in the total of patients were higher than those in healthy controls (10,89±19,29 vs 2,54±1,28 mg/L-p=0,004). Compared with group C, pre-D CRP values were higher only in B group (15,98±24,54 mg/L-p=0,001) but not in A group (4,09±3,33 mg/L-p=NS). There was a significant difference in pre-D serum CRP values between A and B groups (p=0,028). At the end of D session serum CRP values showed a tendency to increase in both groups A (5,16±4,81 mg/L) and B (17,00±27,00 mg/L) but differences were not significant. Pre-D serum PCT values in the total of patients were higher than those in healthy controls (0,82±0,9 vs 0,29±0,55 ng/ml-p&lt;0,001). Compared with group C, pre-D PCT values were higher in both A group (0,52±0,15 ng/ml-p&lt;0,001) and B group (1,01±1,13 ng/ml-p=0,006). There was no significant difference in pre-D serum PCT values between A and B groups (p=0,261). At the end of D session serum PCT values decreased in A group (0,32±0,11 ng/ml-p&lt;0,001) and increased in B group (1,12±1,21 ng/ml-p=0,014). Conclusions In patients on both conventional low-flux HD and online HDF pre-D serum CRP and PCT levels were higher than those in healthy subjects. Dialysis modality and membrane flux did not affect post-D serum CRP values, but post-PCT values decreased in online HDF. PCT usefulness might be limited in dialysis with high-flux membranes. Cut-off values have to be established for both markers to eliminate confusion in diagnosis of inflammatory and infectious diseases in hemodialyzed patients.


2018 ◽  
Vol 100-B (11) ◽  
pp. 1482-1486 ◽  
Author(s):  
D. Akgün ◽  
M. Müller ◽  
C. Perka ◽  
T. Winkler

Aims The aim of this study was to determine the prevalence and characteristics of C-reactive protein (CRP)-negative prosthetic joint infection (PJI) and evaluate the influence of the type of infecting organism on the CRP level. Patients and Methods A retrospective analysis of all PJIs affecting the hip or knee that were diagnosed in our institution between March 2013 and December 2016 was performed. A total of 215 patients were included. Their mean age was 71 years (sd 11) and there were 118 women (55%). The median serum CRP levels were calculated for various species of organism and for patients with acute postoperative, acute haematogenous, and chronic infections. These were compared using the Kruskal–Wallis test, adjusting for multiple comparisons with Dunn’s test. The correlation between the number of positive cultures and serum CRP levels was estimated using Spearman correlation coefficient. Results Preoperative CRP levels were normal (< 10 mg/l) in 77 patients (35.8%) with positive cultures. Low-virulent organisms were isolated in 66 PJIs (85.7%) with normal CRP levels. When grouping organisms by species, patients with an infection caused by Propionibacterium spp., coagulase-negative staphylococci (CNS), and Enterococcus faecalis had significantly lower median serum CRP levels (5.4 mg/l, 12.2 mg/l, and 23.7 mg/l, respectively), compared with those with infections caused by Staphylococcus aureus and Streptococcus spp. (194 mg/l and 89.3 mg/l, respectively; p < 0.001). Those with a chronic PJI had statistically lower median serum CRP levels (10.6 mg/l) than those with acute postoperative and acute haematogenous infections (83.7 mg/l and 149.4 mg/l, respectively; p < 0.001). There was a significant correlation between the number of positive cultures and serum CRP levels (Spearman correlation coefficient, 0.456; p < 0.001). Conclusion The CRP level alone is not accurate as a screening tool for PJI and may yield high false-negative rates, especially if the causative organism has low virulence. Aspiration of the joint should be used for the diagnosis of PJI in patients with a chronic painful arthroplasty, irrespective of CRP level. Cite this article: Bone Joint J 2018;100-B:1482–86.


2010 ◽  
Vol 69 (11) ◽  
pp. 1976-1982 ◽  
Author(s):  
Hanneke J M Kerkhof ◽  
Sita M A Bierma-Zeinstra ◽  
Martha C Castano-Betancourt ◽  
Moniek P de Maat ◽  
Albert Hofman ◽  
...  

ObjectiveTo study the relationship between serum C reactive protein (CRP) levels, genetic variation in the CRP gene and the prevalence, incidence and progression of radiographic osteoarthritis (ROA) in the Rotterdam Study-I (RS-I). A systematic review of studies assessing the relationship between osteoarthritis (OA) and CRP levels was also performed.MethodsThe association between CRP levels and genetic variation in the CRP gene and ROA was examined in 861 patients with hand OA, 718 with knee OA, 349 with hip OA and 2806 controls in the RS-I using one-way analysis of covariance and logistic regression, respectively. PubMed was searched for articles published between January 1992 and August 2009 assessing the relationship between CRP levels and OA.ResultsIn RS-I the prevalence of knee OA, but not hip OA or hand OA, was associated with 14% higher serum CRP levels compared with controls (p=0.001). This association disappeared after adjustment for age and especially body mass index (BMI) (p=0.33). Genetic variation of the CRP gene was not consistently associated with the prevalence, incidence or progression of OA within RS-I. The systematic review included 18 studies (including RS-I) on serum CRP levels and the prevalence, incidence or progression of OA. Consistently higher crude CRP levels were found in cases of prevalent knee OA compared with controls. No association was observed between serum CRP levels and the prevalence of knee OA following adjustment for BMI (n=3 studies, meta-analysis p value=0.61).ConclusionThere is no evidence of association between serum CRP levels or genetic variation in the CRP gene with the prevalence, incidence or progression of OA independent of BMI.


2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Hendrika N. C. Dewi ◽  
Michaela E. Paruntu ◽  
Murniati Tiho

Abstract: Cigarette are the most cause of death around the world. Smoking cigarrete is harmful to the organs because it contains many toxic chemical that can stimulate inflammatory process. Smoking cigarrete is a risk factors for heart disease and chronic pulmonary disease (COPD). C-reactive protein (CRP) are a non spesific inflammatory marker that can elevated in both local and systemic disease. Beside biomarker, CRP also use as prognostic marker for inflammation. The purpose of this study was to identify the level of serum CRP of smokers aged >40 years old. Twenty eight smokers were eligible to this criteria and participated in this study. Cross-sectional design with a descriptive method was employed in this study. Sampels were analysed in laboratory for serum CRP levels. The results showed that 23 subjects (82%) had normal (negatif) serum CRP level and five subjects (18%) had positive serum CRP level. It can be concluded that serum CRP level of >40 years old smokers in Kolombo village, west Bitung two were mostly in normal level.Keywords: c-reactive protein (crp), active smoker, at age >40 years oldAbstrak: Rokok menjadi salah satu penyebab kematian terbesar di dunia. Merokok membahayakan hampir semua organ tubuh karena mengandung berbagai bahan kimia berbahaya yang dapat merangsang proses peradangan dan merupakan faktor utama penyakit jantung dan penyakit paru obstruktif kronik (PPOK). C-Reactive Protein (CRP) merupakan petanda inflamasi non-spesifik yang meningkat pada penyakit lokal maupun sistemik. Selain biomarker CRP juga dijadikan sebagai penanda prognostik untuk inflamasi. Tujuan dari penelitian ini untuk mengetahui kadar CRP serum pada perokok berusia >40 tahun. Dua puluh delapan perokok memenuhi syarat untuk kriteria ini dan berpartisipasi dalam penelitian ini. Penelitian ini menggunakan desain cross-sectional dengan metode deskriptif. Kadar CRP serum sampel dianalisis di laboratorium. Hasil penelitian menunjukkan bahwa 23 subyek (82%) memiliki kadar CRP serum normal (negatif) dan lima subjek (18%) memiliki kadar CRP serum positif. Dapat disimpulkan bahwa kadar CRP serum perokok berusia >40 tahun di desa Kolombo, Bitung barat dua kebanyakan dalam kadar normal.Kata kunci: c-reactive protein (crp), perokok aktif, usia >40 tahun.


2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 383-384
Author(s):  
T. Kise ◽  
E. Takamasu ◽  
Y. Miyoshi ◽  
N. Yokogawa ◽  
K. Shimada

Background:Temporal artery biopsy (TAB) is the gold standard for diagnosing giant cell arteritis (GCA). However, previous studies have reported that the discordance rate of TAB is 3-45%,i.e., in unliteral TAB, GCA may be overlooked in one in five patients, approximately. Evidence as to whether bilateral TAB should be performed initially or one-sided TAB is sufficient for diagnosing GCA is lacking.Objectives:To investigate the predictors of patients with GCA in whom one-sided TAB is sufficient.Methods:The present study was a cross-sectional, single center study conducted from April 1, 2011 to July 31, 2019 at Tokyo Metropolitan Tama Medical Center. Of all consecutive GCA cases for which bilateral TAB was performed, bilaterally positive cases and unilaterally positive cases were extracted as bilateral positive group (BPG) and unilateral positive group (UPG), respectively. GCA was defined in accordance with the classification criteria of the 1990 American College of Rheumatology, and GCA was diagnosed if no other etiology was found within six months after beginning of high-dose glucocorticoid treatment. Demographic, clinical and laboratory data were obtained from the medical records, and the BPG and the UPG were compared statistically in each variable. Statistical significance was defined asp< 0.05.Results:During study, 264 biopsies were performed for 145 cases, who suspected GCA and underwent TAB. The pathological positivity rate was 26.1% (68 / 264 biopsies). Of these, 53 cases had final diagnosis of GCA, in which 43 cases were biopsy proven GCA. Thirty-seven biopsy proven GCA with bilateral TAB were enrolled; 64.9% women; mean (SD) age 75 (8.9) years; median [IQR] TAB length 17.5 [13.0,20.0] mm; headache 54.1%; jaw claudication 45.9%; scalp tenderness 16.2%; temporal artery (TA) tenderness 32.4%; TA engorgement 32.4%; TA pulse abnormality 5.4%; visual symptoms 2.7%; a fever of 38.5°C or higher 40.5%; shoulder girdle pain 48.6%; imaging of aortitis or arteritis 40.5%; median [IQR] white blood cell 9,100 [7200, 12050] /μl; median [IQR] platelet cell 37.5 [27.0, 46.3] ×104/μl; median [IQR] C-reactive protein (CRP) 10.1 [3.9, 16.5] mg/dL; erythrocyte sedimentation rate [IQR] 105 [66, 129] mm/h. Thirty-one in 37 cases were positive bilaterally while 6 in 37 cases were positive unilaterally; and the discordance rate was 16.2%. The median sample length after formalin fixation was 19.0 mm for the BPG and 14.5 mm for the UPG (p= 0.171). The parameters above were compared between UPG and BPG. Of these, only the serum CRP value (mg/dL) differed statistically between groups, and the median value of the two groups was 10.6 and 6.5, respectively (median test:p= 0.031). To predict BPG, in whom unilateral TAB is sufficient for diagnosing GCA, the cut-off value of serum CRP with a specificity of 100% and a sensitivity of 61.3% was set at 9.3 mg/dL (ROC analysis: AUC 0.726).Conclusion:When the serum CRP level is 10 mg/dL or higher in GCA suspected patients, an unilateral TAB alone was sufficient for an accurate diagnosis.References:[1]Hellmich, B, et al.Ann Rheum Dis2020;79(1):19-30.[2]Breuer, GS, et al.J Rheumatol. 2009;36(4):794-796.[3]Czyz CN, et al.Vascular2019;27(4):347-351.[4]Durling B, et al.Can J Ophthalmol2014;49(2):157-161.Figure.Comparison of median CRP levels between unilaterally positive group and bilaterally positive group.Disclosure of Interests:None declared


2021 ◽  
Vol 19 (1) ◽  
pp. 31-34
Author(s):  
Pradeep Chandra Sharma ◽  

Background: Acute appendicitis is a common surgical condition and the most common cause of acute surgical abdomen. Commonly used tests for diagnosis of acute appendicitis were WBC, CRP ESR and procalcitonin (PCT) levels. In present study we correlated the serum levels of CRP with the histopathology of the removed appendix, to study predictive value of serum C- reactive protein in diagnosis of acute appendicitis. Material and Methods:Present study was conducted in patients with possibility of acute appendicitis, underwent appendicectomy. The histopathology report was considered as the final diagnosis. CRP more than 6 mg/dl was considered to be positive. Results: In present study total 88 patients were included. Male to female ratio was 1.4:1, most common age group was 21-30 years (35.23%) followed by 31-40 years (27.27%). Abdominal pain (92.05%), McBurney tenderness (80.68%), vomiting (76.14%), rebound tenderness (67.05%) and fever (55.68%) were common signs and symptoms noted in present study. On histopathology examination, inflammed appendix (51.14%) was most common finding, others were gangrenous appendix (23.86%), perforated appendix (5.68%) and normal appendix (19.32%). In present study diagnostic efficacy of serum CRP was sensitivity (80%), specificity (84.62%), positive predictive value (96.77%), negative predictive value (42.31%), diagnostic accuracy (80.68%). Conclusion. Serum CRP estimation is useful adjunct in diagnosis of acute appendicitis along with clinical diagnosis. Serum CRP value should be interpreted in combination with clinical findings.


2020 ◽  
Vol 14 (03) ◽  
pp. 404-409
Author(s):  
Dian Mulawarmanti ◽  
Kristanti Parisihni ◽  
Widyastuti Widyastuti

Abstract Objectives This study aimed to examine the impact of hyperbaric oxygen therapy (HBOT) on serum C-reactive protein (CRP) levels, osteoclast numbers, and osteoprotegerin (OPG) expression in periodontitis-induced diabetic rats Materials and Methods This study constituted an in vivo laboratory-based experiment incorporating a posttest only control group design. Thirty male Wistar rats were divided into three groups of research subjects: a healthy group (K0), periodontitis-induced diabetic group (K1), and periodontitis-induced diabetic group treated with HBOT for 7 days (K2). After treatment, the subjects were sacrificed to determine the level of serum CRP by the ELISA method. Immunohistochemical analysis was conducted to check the level of OPG expression, while a histological analysis was undertaken to quantify the number of osteoclasts. Statistical Analysis The data was analyzed using a one-way ANOVA and Least Significant Difference (LSD) test on which a result of p < 0.05 was considered statistically significant. Results HBOT appreciably decreased serum CRP levels, significantly enhancing OPG expression in periodontitis-induced diabetic (p < 0.05) and decreasing the number of osteoclasts in -periodontitis-induced diabetic (p > 0.05). Conclusion HBOT reduced the serum CRP level, increased OPG expression, and decreased osteoclast numbers in periodontitis-induced diabetic rats.


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