The Interaction of Very Low Density Lipoprotein and Low Density Lipoprotein with Rabbit and Rat C-Reactive Protein

1983 ◽  
Vol 65 (3) ◽  
pp. 30P-30P
Author(s):  
I.F. Rowe ◽  
A.K. Soutar ◽  
I. Trayner ◽  
M.L. Baltz ◽  
F.C. de Beer ◽  
...  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
C Reactive Protein ◽  
Reactive Protein

scholarly journals Low density lipoprotein and very low density lipoprotein are selectively bound by aggregated C-reactive protein.

1982 ◽  
Vol 156 (1) ◽  
pp. 230-242 ◽  
Author(s):  
F C de Beer ◽  
A K Soutar ◽  
M L Baltz ◽  
I M Trayner ◽  
A Feinstein ◽  
...  
Keyword(s):  
Acute Phase ◽  
Solid Phase ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
C Reactive Protein ◽  
Calcium Dependent ◽  
Reactive Protein

C-reactive protein (CRP), the classical acute-phase protein, can bind phospholipids by virtue of its specific, calcium-dependent reactivity with phosphorylcholine residues. However, analysis of acute-phase serum by gel filtration and by density gradient ultracentrifugation showed that the CRP was in a free, uncomplexed form, despite the coexistent presence of the various classes of serum lipoproteins, all of which contain phospholipids. In contrast, when isolated CRP was aggregated by immobilization at a sufficient density on a solid phase and then exposed to normal human serum, it selectively bound low density lipoprotein (LDL) and traces of very low density lipoprotein. The reaction was calcium dependent and reversible by free phosphorylcholine but not by heparin. LDL isolated from normal plasma was also bound by aggregated CRP. CRP reacts in vitro with a wide variety of different ligands both of extrinsic and of autogenous origin, e.g., microbial products and damaged cell membranes, respectively. If CRP aggregated in vivo by complexing with these ligands than acquires the capacity to selectively bind LDL, the phenomenon may have significant implications for the function of CRP and for the metabolism, clearance, and deposition of LDL.

Prothrombinase enhancement through quantitative and qualitative changes affecting very low density lipoprotein in complex with C-reactive protein

2004 ◽  
Vol 91 (03) ◽  
pp. 522-530 ◽  
Author(s):  
Michael Dennis ◽  
Colin Downey ◽  
Nicole Brufatto ◽  
Michael Nesheim ◽  
Ken Stevenson ◽  
...  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
C Reactive Protein ◽  
Intravascular Coagulation ◽  
Reactive Protein ◽  
Biphasic Waveform ◽  
Prothrombinase Activity ◽  
Qualitative Changes

SummaryThe biphasic waveform that can predict for disseminated intravascular coagulation (DIC) is due to the formation of a calcium-dependent complex between C reactive protein (CRP) and very low density lipoprotein (VLDL). As thrombin generation is pivotal to DIC, this aspect has been specifically investigated and the VLDL component has been found to increase prothrombinase activity via both quantitative and qualitative changes. The specific prothrombinase activity of VLDL from patients manifesting the biphasic waveform was 2.5 times that of normal individuals or critically ill patients without the biphasic waveform. This activity was due to an increase in anionic phospholipid surfaces that could be inhibited with excess annexin V and which was dependent on structurally intact apolipoprotein B.The qualitative change appeared to be due to a deficiency of phosphatidylethanolamine inVLDL from patients with the biphasic waveform.The functional consequence of this enhanced prothrombinase activity was an increased procoagulant effect in plasma. Using a modified activated partial thromboplastin time assay, the mean normal clot time decreased significantly when VLDL from patients with biphasic waveforms was substituted.These results indicate that VLDL derived from patients with the biphasic waveform can enhance thrombin procoagulant activity. As the CRP-VLDL complex exists in vivo, it could have a pathogenic role in disseminating the process of intravascular coagulation.

scholarly journals Complexes between C-Reactive Protein and Very Low Density Lipoprotein Delay Bacterial Clearance in Sepsis

2020 ◽  
Vol 204 (10) ◽  
pp. 2712-2721
Author(s):  
Zhenxing Cheng ◽  
Simon T. Abrams ◽  
Julien Toh ◽  
Susan S. Wang ◽  
Colin Downey ◽  
...  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
Bacterial Clearance ◽  
C Reactive Protein ◽  
Reactive Protein

scholarly journals The formation of a Ca2+-dependent complex of C-reactive protein and very low density lipoprotein causes the biphasic transmittance waveform

2007 ◽  
Vol 7 (S1) ◽  
Author(s):  
Michael Nesheim ◽  
John Samis ◽  
John Walker ◽  
Timothy Fischer ◽  
Liliana Tejidor ◽  
...  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
C Reactive Protein ◽  
Reactive Protein

Biphasic transmittance waveform in the APTT coagulation assay is due to the formation of a Ca++-dependent complex of C-reactive protein with very-low–density lipoprotein and is a novel marker of impending disseminated intravascular coagulation

Blood ◽  
2002 ◽  
Vol 100 (7) ◽  
pp. 2522-2529 ◽  
Author(s):  
Cheng Hock Toh ◽  
John Samis ◽  
Colin Downey ◽  
John Walker ◽  
Lev Becker ◽  
...  
Keyword(s):  
Disseminated Intravascular Coagulation ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Light Transmittance ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
C Reactive Protein ◽  
Intravascular Coagulation ◽  
Reactive Protein ◽  
Vldl Fraction

A decrease in light transmittance before clot formation, manifesting as a biphasic waveform (BPW) pattern in coagulation assays, was previously correlated with the onset of disseminated intravascular coagulation (DIC). In this study of 1187 consecutive admissions to the intensive care unit, the degree of this change on admission predicts DIC better than D-dimer measurements. Additionally, the BPW preceded the time of DIC diagnosis by 18 hours, on average, in 56% (203 of 362) of DIC patients. The BPW is due to the rapid formation of a precipitate and coincident turbidity change on recalcification of plasma. The isolated precipitate contains very-low–density lipoprotein (VLDL) and C-reactive protein (CRP). The addition of CRP and Ca++ to normal plasma also causes the precipitation of VLDL and IDL, but not LDL or HDL. The Kd of the CRP/VLDL interaction is 340 nM, and the IC50 for Ca++ is 5.0 mM. In 15 plasmas with the BPW, CRP was highly elevated (77-398 μg/mL), and the concentration of isolated VLDL ranged from 0.082 to 1.32 mM (cholesterol). The turbidity change on recalcification correlates well with the calculated level of the CRP–VLDL complex. Clinically, the BPW better predicts for DIC than either CRP or triglyceride alone. The complex may have pathophysiological implications because CRP can be detected in the VLDL fraction from sera of patients with the BPW, and the VLDL fraction has enhanced prothrombinase surface activity. The complex has been designated lipoprotein complexed C-reactive protein.

The formation of a CA2+-dependent complex of C-reactive protein and very low density lipoprotein causes the biphasic transmittance waveform

2001 ◽  
Vol 1 (S2) ◽  
Author(s):  
Michael Nesheim ◽  
John Samis ◽  
John Walker ◽  
Timothy Fischer ◽  
Liliana Tejidor ◽  
...  
Keyword(s):  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Very Low Density Lipoprotein ◽  
Low Density ◽  
C Reactive Protein ◽  
Reactive Protein

scholarly journals Phosphoethanolamine-complexed C-reactive protein: A pharmacological-like macromolecule that binds to native low-density lipoprotein in human serum

2008 ◽  
Vol 394 (1-2) ◽  
pp. 94-98 ◽  
Author(s):  
Sanjay K. Singh ◽  
Madathilparambil V. Suresh ◽  
Deborah C. Prayther ◽  
Jonathan P. Moorman ◽  
Antonio E. Rusiñol ◽  
...  
Keyword(s):  
Human Serum ◽  
Low Density Lipoprotein ◽  
Protein A ◽  
Density Lipoprotein ◽  
Low Density ◽  
C Reactive Protein ◽  
Reactive Protein ◽  
Native Low Density Lipoprotein

scholarly journals Relationship between C-reactive protein and features of the metabolic syndrome in military pilots in the Serbia and Montenegro

2005 ◽  
Vol 62 (11) ◽  
pp. 811-819
Author(s):  
Aleksandra Jovelic ◽  
Goran Radjen ◽  
Stojan Jovelic ◽  
Marica Markovic
Keyword(s):  
Metabolic Syndrome ◽  
High Density Lipoprotein ◽  
High Density Lipoprotein Cholesterol ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Lipoprotein Cholesterol ◽  
Low Density ◽  
C Reactive Protein ◽  
Low Density Lipoprotein Cholesterol ◽  
Reactive Protein

Background/Aim. C-reactive protein is an independent predictor of the risk of cardiovascular events and diabetes mellitus in apparently healthy men. The relationship between C-reactive protein and the features of metabolic syndrome has not been fully elucidated. To assess the cross-sectional relationship between C-reactive protein and the features of metabolic syndrome in healthy people. Methods. We studied 161 military pilots (agee, 40?6 years) free of cardiovascular disease, diabetes mellitus and active inflammation on their regular annual medical control. Age, total cholesterol, low density lipoprotein cholesterol, high density lipoprotein cholesterol, triglycerides, fasting glucose, glycosylated hemoglobin, blood pressure, smoking habit, waist circumference and body mass index were evaluated. Plasma C-reactive protein was measured by the immunonephelometry (Dade Behring) method. Metabolic syndrome was defined according to the National Cholesterol Education Program Expert Panel. Results. The mean C-reactive protein concentrations in the subjects grouped according to the presence of 0, 1, 2 and 3 or more features of the metabolic syndrome were 1.11, 1.89, 1.72 and 2.22 mg/L, respectively (p = 0.023) with a statistically, significant difference between those with 3, and without metabolic syndrome (p = 0.01). In the simple regression analyses C-reactive protein did not correlate with the total cholesterol, low density lipoprotein cholesterol, high density lipoprotein cholesterol, body mass index and blood pressure (p > 0.05). In the multiple regression analysis, waist circumference (? = 0.411, p = 0.000), triglycerides to high density lipoprotein cholesterol ratio (? = 0.774, p = 0.000), smoking habit (? = 0.236, p = 0.003) and triglycerides (? = 0.471, p = 0.027) were independent predictors of C-reactive protein. Conclusions. Our results suggested a cross-sectional independent correlation between the examined cardiovascular risk factors as the predominant features of metabolic syndrome and C-reactive protein in the group of apparently healthy subjects. The lack of correlation of C-reactive protein with the total cholesterol and low density lipoprotein cholesterol in our study may suggest their different role in the process of atherosclerosis and the possibility to determine C-reactive protein in order to identify high-risk subjects not identified with cholesterol screening.

scholarly journals KORELASI KADAR HIGH SENSITIVITY C-REACTIVE PROTEIN DENGAN KADAR LOW DENSITY LIPOPROTEIN PADA PENYANDANG OBES

2020 ◽  
Vol 5 (3) ◽  
pp. 676
Author(s):  
Rama Dhanivita Djamin
Keyword(s):  
Interleukin 1 ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
High Sensitivity ◽  
Low Grade ◽  
Low Density ◽  
C Reactive Protein ◽  
Necrosis Factor Alpha ◽  
Reactive Protein ◽  
Hs Crp

<p><em>Obesitas terjadi karena akumulasi lemak berlebih di dalam tubuh. Akumulasi lemak menimbulkan low grade inflammation pada jaringan adiposa, menyebabkan peningkatan sitokin inflamasi seperti tumor necrosis factor-alpha, interleukin-1 beta, dan interleukin-6 (IL-6). Peningkatan sekresi IL-6 merangsang hepar meningkatkan produksi protein fase akut. High sensitivity C-reactive protein (hs-CRP) sebagai penanda inflamasi merupakan protein fase akut. Low density lipoprotein (LDL-kolesterol) adalah lipoprotein yang paling banyak mengandung kolesterol. Peningkatan kadar hs-CRP dan kadar LDL-kolesterol pada obesitas diidentifikasi sebagai faktor risiko aterosklerosis. Penelitian ini bertujuan menganalisis hubungan hs-CRP dengan LDL-kolesterol pada penyandang obes, merupakan penelitian analitik rancangan potong lintang dilakukan  September 2018 sampai Agustus 2019. Kadar hs-CRP diperiksa dengan metode enzyme linked immunoassay (ELISA), sedangkan kadar LDL-kolesterol dengan metode kalkulasi (rumus Friedewald). Uji korelasi Spearman digunakan untuk menganalisi data, jika didapatkan nilai p&lt;0,05 korelasi dinyatakan bermakna. Subjek penelitian berjumlah 26 penyandang obes terdiri dari 6 laki-laki (23,1%) dan 20 perempuan (76,9%). Rerata umur subjek penelitian adalah 36,46(7,68) tahun. Rerata kadar hs-CRP dan kadar LDL-kolesterol adalah 5,08(1,28) mg/L dan  154,69(45,8) mg/dL. Analisis korelasi menunjukkan korelasi positif lemah dan tidak bermakna secara statistik antara kadar hs-CRP dengan kadar LDL-kolesterol (r= 0,333, p=0,096). Simpulan: Terdapat korelasi positif lemah antara kadar hs-CRP dengan kadar LDL-kolesterol pada penyandang obes.</em></p><p><strong><em>Kata kunci</em></strong><em>: </em><em>Obesitas, High Sensitivity C-Reactive, Low Density Lipoprotein</em><em></em></p>

Sign in / Sign up

Export Citation Format

Share Document