Usefulness of Serum Leucine-Rich Alpha-2 Glycoprotein as a Disease Activity Biomarker in Patients with Rheumatoid Arthritis

Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG) levels are elevated in patients with rheumatoid arthritis (RA). In addition, we assessed their correlation with disease activity parameters and pro-inflammatory cytokine, tumor necrosis factor-α (TNF-α). Our study i...

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Published inJournal of Korean medical science Vol. 29; no. 9; pp. 1199 - 1204
Main Authors Ha, You Jung, Kang, Eun-Jin, Lee, Sang-Won, Lee, Soo-Kon, Park, Yong-Beom, Song, Jung-Soo, Choi, Sang Tae
Format Journal Article
LanguageEnglish
Published Korea (South) The Korean Academy of Medical Sciences 01.09.2014
대한의학회
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ISSN1011-8934
1598-6357
1598-6357
DOI10.3346/jkms.2014.29.9.1199

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Abstract Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG) levels are elevated in patients with rheumatoid arthritis (RA). In addition, we assessed their correlation with disease activity parameters and pro-inflammatory cytokine, tumor necrosis factor-α (TNF-α). Our study included 69 patients with RA and 48 age- and sex-matched healthy controls. Serum concentrations of TNF-α and LRG were determined by enzyme-linked immunosorbent assay. Serum LRG concentrations were significantly elevated in patients with RA compared with those in healthy controls (30.8 ± 14.4 vs. 22.2 ± 6.1 ng/mL; P<0.001). In patients with RA, serum LRG levels were found to be correlated with disease activity score 28 (DAS28), erythrocyte sedimentation rate, and C-reactive protein levels (γ=0.671; γ=0.612; and γ=0.601, P<0.001, respectively), but not with serum TNF-α levels. Serum LRG levels in patients with an active disease status (DAS28≥2.6) were significantly higher than those in remission (DAS28<2.6) (36.45 ± 14.36 vs. 24.63 ± 8.81 ng/mL; P<0.001). Our findings suggest that serum LRG could contribute to the inflammatory process independent of TNF-α and it may be a novel biomarker for assessing inflammatory activity in patients with RA.
AbstractList Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG) levels are elevated in patients with rheumatoid arthritis (RA). In addition, we assessed their correlation with disease activity parameters and pro-inflammatory cytokine, tumor necrosis factor-α (TNF-α). Our study included 69 patients with RA and 48 age- and sex-matched healthy controls. Serum concentrations of TNF-α and LRG were determined by enzyme-linked immunosorbent assay. Serum LRG concentrations were significantly elevated in patients with RA compared with those in healthy controls (30.8 ± 14.4 vs. 22.2 ± 6.1 ng/mL; P<0.001). In patients with RA, serum LRG levels were found to be correlated with disease activity score 28 (DAS28), erythrocyte sedimentation rate, and C-reactive protein levels (γ=0.671; γ=0.612; and γ=0.601, P<0.001, respectively), but not with serum TNF-α levels. Serum LRG levels in patients with an active disease status (DAS28≥2.6) were significantly higher than those in remission (DAS28<2.6) (36.45 ± 14.36 vs. 24.63 ± 8.81 ng/mL; P<0.001). Our findings suggest that serum LRG could contribute to the inflammatory process independent of TNF-α and it may be a novel biomarker for assessing inflammatory activity in patients with RA.
Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG)levels are elevated in patients with rheumatoid arthritis (RA). In addition, we assessed theircorrelation with disease activity parameters and pro-inflammatory cytokine, tumornecrosis factor-α (TNF-α). Our study included 69 patients with RA and 48 age- and sexmatchedhealthy controls. Serum concentrations of TNF-α and LRG were determined byenzyme-linked immunosorbent assay. Serum LRG concentrations were significantlyelevated in patients with RA compared with those in healthy controls (30.8 ± 14.4 vs. 22.2 ± 6.1 ng/mL; P < 0.001). In patients with RA, serum LRG levels were found to becorrelated with disease activity score 28 (DAS28), erythrocyte sedimentation rate, andC-reactive protein levels (γ = 0.671; γ = 0.612; and γ = 0.601, P < 0.001, respectively),but not with serum TNF-α levels. Serum LRG levels in patients with an active disease status(DAS28 ≥ 2.6) were significantly higher than those in remission (DAS28 < 2.6) (36.45 ±14.36 vs. 24.63 ± 8.81 ng/mL; P < 0.001). Our findings suggest that serum LRG couldcontribute to the inflammatory process independent of TNF-α and it may be a novelbiomarker for assessing inflammatory activity in patients with RA. KCI Citation Count: 0
Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG) levels are elevated in patients with rheumatoid arthritis (RA). In addition, we assessed their correlation with disease activity parameters and pro-inflammatory cytokine, tumor necrosis factor-α (TNF-α). Our study included 69 patients with RA and 48 age- and sex-matched healthy controls. Serum concentrations of TNF-α and LRG were determined by enzyme-linked immunosorbent assay. Serum LRG concentrations were significantly elevated in patients with RA compared with those in healthy controls (30.8 ± 14.4 vs. 22.2 ± 6.1 ng/mL; P<0.001). In patients with RA, serum LRG levels were found to be correlated with disease activity score 28 (DAS28), erythrocyte sedimentation rate, and C-reactive protein levels (γ=0.671; γ=0.612; and γ=0.601, P<0.001, respectively), but not with serum TNF-α levels. Serum LRG levels in patients with an active disease status (DAS28≥2.6) were significantly higher than those in remission (DAS28<2.6) (36.45 ± 14.36 vs. 24.63 ± 8.81 ng/mL; P<0.001). Our findings suggest that serum LRG could contribute to the inflammatory process independent of TNF-α and it may be a novel biomarker for assessing inflammatory activity in patients with RA.Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG) levels are elevated in patients with rheumatoid arthritis (RA). In addition, we assessed their correlation with disease activity parameters and pro-inflammatory cytokine, tumor necrosis factor-α (TNF-α). Our study included 69 patients with RA and 48 age- and sex-matched healthy controls. Serum concentrations of TNF-α and LRG were determined by enzyme-linked immunosorbent assay. Serum LRG concentrations were significantly elevated in patients with RA compared with those in healthy controls (30.8 ± 14.4 vs. 22.2 ± 6.1 ng/mL; P<0.001). In patients with RA, serum LRG levels were found to be correlated with disease activity score 28 (DAS28), erythrocyte sedimentation rate, and C-reactive protein levels (γ=0.671; γ=0.612; and γ=0.601, P<0.001, respectively), but not with serum TNF-α levels. Serum LRG levels in patients with an active disease status (DAS28≥2.6) were significantly higher than those in remission (DAS28<2.6) (36.45 ± 14.36 vs. 24.63 ± 8.81 ng/mL; P<0.001). Our findings suggest that serum LRG could contribute to the inflammatory process independent of TNF-α and it may be a novel biomarker for assessing inflammatory activity in patients with RA.
Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG) levels are elevated in patients with rheumatoid arthritis (RA). In addition, we assessed their correlation with disease activity parameters and pro-inflammatory cytokine, tumor necrosis factor-α (TNF-α). Our study included 69 patients with RA and 48 age- and sex-matched healthy controls. Serum concentrations of TNF-α and LRG were determined by enzyme-linked immunosorbent assay. Serum LRG concentrations were significantly elevated in patients with RA compared with those in healthy controls (30.8±14.4 vs. 22.2±6.1 ng/mL; P<0.001). In patients with RA, serum LRG levels were found to be correlated with disease activity score 28 (DAS28), erythrocyte sedimentation rate, and C-reactive protein levels (γ=0.671; γ=0.612; and γ=0.601, P<0.001, respectively), but not with serum TNF-α levels. Serum LRG levels in patients with an active disease status (DAS28≥2.6) were significantly higher than those in remission (DAS28<2.6) (36.45±14.36 vs. 24.63±8.81 ng/mL; P<0.001). Our findings suggest that serum LRG could contribute to the inflammatory process independent of TNF-α and it may be a novel biomarker for assessing inflammatory activity in patients with RA.
Author Choi, Sang Tae
Park, Yong-Beom
Ha, You Jung
Song, Jung-Soo
Kang, Eun-Jin
Lee, Sang-Won
Lee, Soo-Kon
AuthorAffiliation 1 Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
4 Division of Rheumatology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
3 Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
2 Division of Rheumatology, Department of Internal Medicine, Busan Medical Center, Busan, Korea
AuthorAffiliation_xml – name: 2 Division of Rheumatology, Department of Internal Medicine, Busan Medical Center, Busan, Korea
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Issue 9
Keywords Disease Activity
Leucine-Rich Alpha-2-Glycoprotein
Tumor Necrosis Factor-alpha
Arthritis, Rheumatoid
Language English
License http://creativecommons.org/licenses/by-nc/3.0
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Snippet Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG) levels are elevated in patients with rheumatoid arthritis (RA). In...
Our study aimed to investigate whether serum leucine-rich alpha-2-glycoprotein (LRG)levels are elevated in patients with rheumatoid arthritis (RA). In...
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StartPage 1199
SubjectTerms Adult
Aged
Area Under Curve
Arthritis, Rheumatoid - blood
Arthritis, Rheumatoid - diagnosis
Biomarkers - blood
Blood Sedimentation
C-Reactive Protein - analysis
Enzyme-Linked Immunosorbent Assay
Female
Glycoproteins - blood
Humans
Male
Middle Aged
Original
ROC Curve
Severity of Illness Index
Tumor Necrosis Factor-alpha - blood
의학일반
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Title Usefulness of Serum Leucine-Rich Alpha-2 Glycoprotein as a Disease Activity Biomarker in Patients with Rheumatoid Arthritis
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