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Yuan J, Liao YS, Zhang TC, Tang YQ, Yu P, Liu YN, Cai DJ, Yu SG, Zhao L. Integrating Bulk RNA and Single-Cell Sequencing Data Unveils Efferocytosis Patterns and ceRNA Network in Ischemic Stroke. Transl Stroke Res 2024:10.1007/s12975-024-01255-8. [PMID: 38678526 DOI: 10.1007/s12975-024-01255-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/17/2024] [Accepted: 04/18/2024] [Indexed: 05/01/2024]
Abstract
Excessive inflammatory response following ischemic stroke (IS) injury is a key factor affecting the functional recovery of patients. The efferocytic clearance of apoptotic cells within ischemic brain tissue is a critical mechanism for mitigating inflammation, presenting a promising avenue for the treatment of ischemic stroke. However, the cellular and molecular mechanisms underlying efferocytosis in the brain after IS and its impact on brain injury and recovery are poorly understood. This study explored the roles of inflammation and efferocytosis in IS with bioinformatics. Three Gene Expression Omnibus Series (GSE) (GSE137482-3 m, GSE137482-18 m, and GSE30655) were obtained from NCBI (National Center for Biotechnology Information) and GEO (Gene Expression Omnibus). Differentially expressed genes (DEGs) were processed for GSEA (Gene Set Enrichment Analysis), GO (Gene Ontology Functional Enrichment Analysis), and KEGG (Kyoto Encyclopedia of Genes and Genomes) pathway analyses. Efferocytosis-related genes were identified from the existing literature, following which the relationship between Differentially Expressed Genes (DEGs) and efferocytosis-related genes was examined. The single-cell dataset GSE174574 was employed to investigate the distinct expression profiles of efferocytosis-related genes. The identified hub genes were verified using the dataset of human brain and peripheral blood sample datasets GSE56267 and GSE122709. The dataset GSE215212 was used to predict competing endogenous RNA (ceRNA) network, and GSE231431 was applied to verify the expression of differential miRNAs. At last, the middle cerebral artery (MCAO) model was established to validate the efferocytosis process and the expression of hub genes. DEGs in two datasets were significantly enriched in pathways involved in inflammatory response and immunoregulation. Based on the least absolute shrinkage and selection operator (LASSO) analyses, we identified hub efferocytosis-related genes (Abca1, C1qc, Ptx3, Irf5, and Pros1) and key transcription factors (Stat5). The scRNA-seq analysis showed that these hub genes were mainly expressed in microglia and macrophages which are the main cells with efferocytosis function in the brain. We then identified miR-125b-5p as a therapeutic target of IS based on the ceRNA network. Finally, we validated the phagocytosis and clearance of dead cells by efferocytosis and the expression of hub gene Abca1 in MCAO mice models.
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Affiliation(s)
- Jing Yuan
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China
| | - Yu-Sha Liao
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China
| | - Tie-Chun Zhang
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China
| | - Yu-Qi Tang
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China
| | - Pei Yu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China
| | - Ya-Ning Liu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China
| | - Ding-Jun Cai
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China
| | - Shu-Guang Yu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China
| | - Ling Zhao
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, Sichuan Province, China.
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Wang Y, Chen W, Ding S, Wang W, Wang C. Pentraxins in invertebrates and vertebrates: From structure, function and evolution to clinical applications. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 149:105064. [PMID: 37734429 DOI: 10.1016/j.dci.2023.105064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/18/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
The immune system is divided into two broad categories, consisting of innate and adaptive immunity. As recognition and effector factors of innate immunity and regulators of adaptive immune responses, lectins are considered to be important defense chemicals against microbial pathogens, cell trafficking, immune regulation, and prevention of autoimmunity. Pentraxins, important members of animal lectins, play a significant role in protecting the body from pathogen infection and regulating inflammatory reactions. They can recognize and bind to a variety of ligands, including carbohydrates, lipids, proteins, nucleic acids and their complexes, and protect the host from pathogen invasion by activating the complement cascade and Fcγ receptor pathways. Based on the primary structure of the subunit, pentraxins are divided into short and long pentraxins. The short pentraxins are comprised of C-reactive protein (CRP) and serum amyloid P (SAP), and the most important member of the long pentraxins is pentraxin 3 (PTX3). The CRP and SAP exist in both vertebrates and invertebrates, while the PTX3 may be present only in vertebrates. The major ligands and functions of CRP, SAP and PTX3 and three activation pathways involved in the complement system are summarized in this review. Their different characteristics in various animals including humans, and their evolutionary trees are analyzed. The clinical applications of CRP, SAP and PTX3 in human are reviewed. Some questions that remain to be understood are also highlighted.
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Affiliation(s)
- Yuying Wang
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China
| | - Wei Chen
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China; Yantai Productivity Promotion Center, Yantai, 264003, People's Republic of China
| | - Shuo Ding
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China
| | - Wenjun Wang
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China
| | - Changliu Wang
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China.
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Li LL, Luan ZQ, Tan Y, Wang H, Yu XJ, Qu Z, Yu F, Chen M. Anti-complement factor H (CFH) autoantibodies could delay pristane-induced lupus nephritis. Immunol Res 2023; 71:849-859. [PMID: 37322353 PMCID: PMC10667379 DOI: 10.1007/s12026-023-09396-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/12/2023] [Indexed: 06/17/2023]
Abstract
PURPOSE Anti-complement factor H (CFH) autoantibodies could be detected in lupus and its significance remained to be elucidated. Herein, we aimed to explore the roles of anti-CFH autoantibodies based on pristane-induced lupus mice. METHODS Twenty-four female Balb/c mice were randomly divided into four groups, with one group injected with pristane (pristane group), one group with pristane and then human CFH (hCFH) (pristane-CFH group) 3 times, and the other two as vertical controls, PBS group and PBS-CFH group. Histopathological analysis was performed six months after pristane administration. Levels of hCFH, anti-CFH autoantibodies and anti-dsDNA antibody were detected. Murine IgG (mIgG) were purified and cross-reactivity, epitopes, subclasses and functional analysis were further evaluated in vitro. RESULTS Immunization with hCFH and subsequent development of anti-CFH autoantibodies significantly attenuated nephritis of pristane-induced lupus, including lower levels of urinary protein and serum creatinine, decreased levels of serum anti-dsDNA antibody, greatly ameliorated renal histopathologic damage, decreased IgG, complements (C1q, C3) deposits and lower inflammatory factor (IL-6) expression in glomerulus. Furthermore, the purified mIgG (contained anti-CFH autoantibodies) could recognize both hCFH and murine CFH, and the epitopes were predominantly located in hCFH short consensus repeats (SCRs) 1-4, 7 and 11-14. The IgG subclasses were predominant IgG1. The autoantibodies could enhance the binding between hCFH and C3b, and increase factor I mediated-C3b lysis in vitro. CONCLUSION Our results suggested that anti-CFH autoantibodies could attenuate pristane-induced lupus nephritis by increasing bio-functions of CFH on regulating complement activation and controlling inflammation.
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Affiliation(s)
- Lin-Lin Li
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
- Renal Division, Henan Provincial People's Hospital, Zhengzhou, China
| | - Zhong-Qiu Luan
- Department of Nephrology, First Affiliated Hospital of Heilongjiang, University of Chinese Medicine, Beijing, China
| | - Ying Tan
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
| | - Hui Wang
- Laboratory of Electron Microscopy, Pathological Centre, Peking University First Hospital, Beijing, China
| | - Xiao-Juan Yu
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
| | - Zhen Qu
- Department of Nephrology, Peking University International Hospital, Beijing, China.
| | - Feng Yu
- Department of Nephrology, Peking University International Hospital, Beijing, China
| | - Min Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, China
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Li Y, Zhang S, Liu J, Zhang Y, Zhang N, Cheng Q, Zhang H, Wu X. The pentraxin family in autoimmune disease. Clin Chim Acta 2023; 551:117592. [PMID: 37832905 DOI: 10.1016/j.cca.2023.117592] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/08/2023] [Accepted: 10/10/2023] [Indexed: 10/15/2023]
Abstract
The pentraxins represent a family of multifunctional proteins composed of long and short pentamers. The latter includes serum amyloid P component (SAP) and C-reactive protein (CRP) whereas the former includes neuronal PTX1 and PTX2 (NPTX1 and NPTX2, respectively), PTX3 and PTX4. These serve as a bridge between adaptive immunity and innate immunity and a link between inflammation and immunity. Similarities and differences between long and short pentamers are examined and their roles in autoimmune disease are discussed. Increased CRP and PTX3 could indicate the activity of rheumatoid arthritis, systemic lupus erythematosus or other autoimmune diseases. Mechanistically, CRP and PTX3 may predict target organ injury, regulate bone metabolic immunity and maintain homeostasis as well as participate in vascular endothelial remodeling. Interestingly, PTX3 is pleiotropic, being involved in inflammation and tissue repair. Given the therapeutic potential of PTX3 and CRP, targeting these factors to exert a beneficial effect is the focus of research efforts. Unfortunately, studies on NPTX1, NPTX2, PTX4 and SAP are scarce and more research is clearly needed to elaborate their potential roles in autoimmune disease.
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Affiliation(s)
- Yongzhen Li
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Shouzan Zhang
- Department of Neurosurgery, Peking University Third Hospital, Beijing, PR China
| | - Jingqi Liu
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Yudi Zhang
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, PR China
| | - Nan Zhang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Quan Cheng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Hunan, PR China.
| | - Hao Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, PR China.
| | - Xiaochuan Wu
- Department of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan, PR China.
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Wang F, Wang Y, Kong X, Mu J, Wang Z, Yang X, Ye J. Association between psoriasis and serum apolipoprotein A1 and B: A systematic review and meta-analysis. Heliyon 2023; 9:e21168. [PMID: 37928384 PMCID: PMC10622706 DOI: 10.1016/j.heliyon.2023.e21168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023] Open
Abstract
Background Psoriasis has been linked to dyslipidemia. However, the magnitude of the association between psoriasis and serum apolipoproteins A1 and B remains unclear. Methods We systematically searched PubMed, Embase, and Cochrane Library databases for eligible studies published before August 10, 2023. Data were pooled using Stata software. We adopted a random-effects model for the meta-analysis. Additionally, we conducted subgroup analyses of the studies according to the psoriasis type and matched body mass index (BMI). Results Seventeen studies involving 2467 participants were included. Psoriasis was associated with decreased serum apolipoprotein A1 (weighted mean difference [WMD] = -9.05, P < 0.001) and increased serum apolipoprotein B (WMD = 11.68, P < 0.001). In subgroup analysis after matching BMI, the findings showing an association of psoriasis with serum apolipoprotein A1 (WMD = -14.07, P < 0.001) and serum apolipoprotein B (WMD = 13.07, P < 0.001) were consistent with the overall results. The subgroup analysis for the presence or absence of psoriatic arthritis showed that serum apolipoprotein A1 was significantly decreased in psoriasis with (WMD = -11.29, P < 0.001) and without arthritis (WMD = -8.69, P = 0.039); whereas serum apolipoprotein B was significantly increased in psoriasis with (WMD = 13.57, P < 0.001) and without arthritis (WMD = 9.21, P < 0.001). Conclusions Our study revealed that psoriasis is associated with decreased serum apolipoprotein A1 and increased serum apolipoprotein B levels compared with healthy controls.
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Affiliation(s)
- Fang Wang
- Dermatology Department, The First Clinical Medical College of Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Yuan Wang
- Dermatology Department, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Xiangyi Kong
- Dermatology Department, The First Clinical Medical College of Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Jing Mu
- Dermatology Department, The First Clinical Medical College of Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Zhimin Wang
- Dermatology Department, The First Clinical Medical College of Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Xuesong Yang
- Dermatology Department, The First Affiliated Hospital of Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Jianzhou Ye
- Dermatology Department, The First Affiliated Hospital of Yunnan University of Chinese Medicine, Kunming, Yunnan, China
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Fang Y, Su J, Zhang B, Zhao C, Ji L, Liang F, Wang Z, Hao J, Meng Y, Wei B, Huang Y, Dai L, Ouyang S. Autoantibodies of inflammatory cytokines as serum biomarkers in OSA patients. Clin Chim Acta 2023:117399. [PMID: 37217113 DOI: 10.1016/j.cca.2023.117399] [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: 11/16/2022] [Revised: 05/15/2023] [Accepted: 05/19/2023] [Indexed: 05/24/2023]
Abstract
As many as 90% of patients with obstructive sleep apnea (OSA) may be undiagnosed. It is necessary to explore the potential value of autoantibodies against CRP, IL-6, IL-8 and TNF-α in the diagnosis of OSA. ELISA was performed to detect the level of autoantibodies against CRP, IL-6, IL-8 and TNF-α in sera from 264 OSA patients and 231 normal controls (NCs). The expression level of autoantibodies against CRP, IL-6 and IL-8 in OSA were significantly higher than that in NC while the level of anti-TNF-α was lower in OSA than that in NC. The per SD increment of anti-CRP, anti-IL-6 and anti-IL-8 autoantibodies were significantly associated with a 430%, 100% and 31% higher risk for OSA, respectively. The AUC of anti-CRP was 0.808 (95% CI: 0.771-0.845) when comparing OSA with NC, while the AUC increased to 0.876 (95% CI: 0.846-0.906) combining four autoantibodies. For discrimination of severe OSA versus NC and non-severe OSA versus NC, the AUC for four autoantibodies combination was 0.885 (95% CI: 0.851-0.918) and 0.876 (95% CI: 0.842-0.913). This study revealed the association between autoantibodies against inflammatory factors and OSA, and the combination of autoantibodies against CRP, IL-6, IL-8 and TNF-α may function as novel biomarker for monitoring the presence of OSA.
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Affiliation(s)
- Yifei Fang
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Jiao Su
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Binglu Zhang
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Chunling Zhao
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Longtao Ji
- Henan Institute of Medical and Pharmaceutical Sciences & Henan Key Medical Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; BGI College, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Feifei Liang
- Henan Institute of Medical and Pharmaceutical Sciences & Henan Key Medical Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; BGI College, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Zhi Wang
- Henan Institute of Medical and Pharmaceutical Sciences & Henan Key Medical Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; BGI College, Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Jimin Hao
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Yang Meng
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Beilei Wei
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Yuyang Huang
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China
| | - Liping Dai
- Henan Institute of Medical and Pharmaceutical Sciences & Henan Key Medical Laboratory of Tumor Molecular Biomarkers, Zhengzhou University, Zhengzhou 450052, Henan, China; BGI College, Zhengzhou University, Zhengzhou 450052, Henan, China.
| | - Songyun Ouyang
- Department of Respiratory and Sleep Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, Henan, China.
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Alhammad R, Abu-Farha M, Hammad MM, Thanaraj TA, Channanath A, Alam-Eldin N, Al-Sabah R, Shaban L, Alduraywish A, Al-Mulla F, Rahman A, Abubaker J. Increased LRG1 Levels in Overweight and Obese Adolescents and Its Association with Obesity Markers, Including Leptin, Chemerin, and High Sensitivity C-Reactive Protein. Int J Mol Sci 2022; 23:ijms23158564. [PMID: 35955698 PMCID: PMC9369195 DOI: 10.3390/ijms23158564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/25/2022] [Accepted: 07/27/2022] [Indexed: 02/05/2023] Open
Abstract
Leucine-rich α-2 glycoprotein1 (LRG1) is a member of the leucine-rich repeat (LRR) family that is implicated in multiple diseases, including cancer, aging, and heart failure, as well as diabetes and obesity. LRG1 plays a key role in diet-induced hepatosteatosis and insulin resistance by mediating the crosstalk between adipocytes and hepatocytes. LRG1 also promotes hepatosteatosis by upregulating de novo lipogenesis in the liver and suppressing fatty acid β-oxidation. In this study, we investigated the association of LRG1 with obesity markers, including leptin and other adipokines in adolescents (11−14 years; n = 425). BMI-for-age classification based on WHO growth charts was used to define obesity. Plasma LRG1 was measured by ELISA, while other markers were measured by multiplexing assay. Median (IQR) of LRG1 levels was higher in obese (30 (25, 38) µg/mL) and overweight (30 (24, 39) µg/mL) adolescents, compared to normal-weight participants (27 (22, 35) µg/mL). The highest tertile of LRG1 had an OR [95% CI] of 2.55 [1.44, 4.53] for obesity. LRG1 was positively correlated to plasma levels of high sensitivity c-reactive protein (HsCRP) (ρ = 0.2), leptin (ρ = 0.2), and chemerin (ρ = 0.24) with p < 0.001. Additionally, it was positively associated with plasma level of IL6 (ρ = 0.17) and IL10 (ρ = 0.14) but not TNF-α. In conclusion, LRG1 levels are increased in obese adolescents and are associated with increased levels of adipogenic markers. These results suggest the usefulness of LRG1 as an early biomarker for obesity and its related pathologies in adolescents.
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Affiliation(s)
- Rashed Alhammad
- Department of Pharmacology, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait;
| | - Mohamed Abu-Farha
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (M.A.-F.); (M.M.H.); (N.A.-E.)
| | - Maha M. Hammad
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (M.A.-F.); (M.M.H.); (N.A.-E.)
| | - Thangavel Alphonse Thanaraj
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (T.A.T.); (A.C.); (F.A.-M.)
| | - Arshad Channanath
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (T.A.T.); (A.C.); (F.A.-M.)
| | - Nada Alam-Eldin
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (M.A.-F.); (M.M.H.); (N.A.-E.)
| | - Reem Al-Sabah
- Department of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Safat 13110, Kuwait;
| | - Lemia Shaban
- Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Safat 13060, Kuwait;
| | - Abdulrahman Alduraywish
- Department of Internal Medicine, College of Medicine, Jouf University, Sakaka 72388, Saudi Arabia;
| | - Fahd Al-Mulla
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (T.A.T.); (A.C.); (F.A.-M.)
| | - Abdur Rahman
- Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Safat 13060, Kuwait;
- Correspondence: (A.R.); (J.A.); Tel.: +965-2463-3321 (A.R.); +965-2224-2999 (ext. 3563) (J.A.)
| | - Jehad Abubaker
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City 15462, Kuwait; (M.A.-F.); (M.M.H.); (N.A.-E.)
- Correspondence: (A.R.); (J.A.); Tel.: +965-2463-3321 (A.R.); +965-2224-2999 (ext. 3563) (J.A.)
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PTX3 Protects Intestinal Mucosal Barrier Damage in Sepsis Through Toll-Like Receptor Signaling Pathway. Inflammation 2022; 45:2339-2351. [PMID: 35687213 DOI: 10.1007/s10753-022-01696-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/18/2022] [Accepted: 05/31/2022] [Indexed: 01/16/2023]
Abstract
This study aims to confirm the protective effect of Pentraxin 3 (PTX3) on intestinal mucosal barrier damage in sepsis in animal and cell models and explore its mechanism. Analysis of the GSE147775 gene set revealed that the level of PTX3 was upregulated in the lipopolysaccharide (LPS)-induced rat sepsis model. The mice sepsis model was established by cecal ligation perforation (CLP), and the cell inflammation model was induced by LPS. Cell apoptosis and the expression of apoptosis-related protein were detected by flow cytometry and Western blotting. The PTX3 level was significantly upregulated in the mice sepsis model. Intestinal mucosal barrier damage was aggravated and inflammatory factor expression was upregulated after PTX3 downregulation in sepsis mice. After upregulation of PTX3, intestinal mucosal barrier damage was alleviated and inflammatory factor expression was decreased in sepsis mice. Further data mining suggested that the anti-inflammatory effect of PTX3 might be realized through inhibition of the toll-like receptor (TLR) signaling pathway. Moreover, compared with the LPS group, downregulation of PTX3 increased cell apoptosis and the levels of BCL2-associated X (Bax), myeloperoxidase (MPO), tumor necrosis factor-alfa (TNF-α), interleukin 1 beta (IL-1β), and interferon-gamma (IFN-γ), and decreased the levels of B-cell lymphoma-2 (Bcl-2), zona occludens (ZO)-1, and occludin. On the contrary, overexpression of PTX3 reduced cell apoptosis and the levels of Bax, MPO, TNF-α, IL-1β, and IFN-γ. Moreover, downregulation of PTX3 reversed the inhibitive effects on cell apoptosis and inflammation and promotive effects on the levels of Zo-1 and occludin induced by CLI-095 (a TLR signaling pathway inhibitor). In the CLP-induced mice sepsis model and LPS-induced cell inflammation model, PTX3 inhibits inflammatory response and reduces intestinal mucosal barrier damage through the TLR signaling pathway.
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Mukherjee S, Saha B, Tripathi A. Clinical significance of differential serum-signatures for early prediction of severe dengue among Eastern Indian patients. Clin Exp Immunol 2022; 208:72-82. [PMID: 35348620 PMCID: PMC9113256 DOI: 10.1093/cei/uxac018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 02/10/2022] [Indexed: 01/12/2023] Open
Abstract
Dengue infection can result in simple dengue fever or life-threatening severe dengue. Early identification of severe patients is needed for proper disease management. Dengue infection was screened among 168 symptomatic patients by qRT-PCR, anti-dengue IgM, and IgG ELISA. Dengue patients were categorized according to WHO classification. Viral load and dengue serotypes were determined by qRT-PCR. Levels of acute-phase-proteins (SAP, SAA2; CRP and ApoA1), endothelial (Ang2, VEGF), coagulation (fibrinogen) markers were determined by sandwich ELISA/immunoturbidimetry/western-blotting. Hepatic (ALT, AST, ALP) and other blood biochemical parameters were studied by autoanalyzer and haematology cell counter. Statistical analysis and protein-protein-interaction network were performed by GraphPad-Prism and STRINGS database, respectively. Among 87 dengue patients, significantly higher levels of Ang2, VEGF, CRP, SAA2, ApoA1, AST, ALT, and AST/ALT ratio and low level of fibrinogen were detected in severe-dengue cases compared to dengue without warning-signs, with seven of them severely altered during febrile-phase. Higher fold-change of Ang2 and VEGF as well as decreased fibrinogen were observed among patients with haemorrhagic-manifestation, clinical-fluid accumulation and thrombocytopenia. Functional network analysis predicted Ang2, VEGF, and CRP to be functionally and physically connected and SAA2 and ApoA1 to be functioning together. Correlation analyses also validated this connectivity by a strong positive correlation between Ang2, VEGF, and CRP. PCA analysis followed by hierarchical clustering heatmap analysis segregated severe-dengue patients from the rest, with VEGF, Ang2, ApoA1, AST, and ALT clearly distinguishing the severe-dengue group. Thus, serum levels of VEGF, Ang2, ApoA1, AST, and ALT might act as potential biomarkers for predicting dengue severity during the early stage.
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Affiliation(s)
- Saikat Mukherjee
- Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
| | - Bibhuti Saha
- Department of Tropical Medicine, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
| | - Anusri Tripathi
- Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
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10
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Chen Z, Wang C, Lin C, Zhang L, Zheng H, Zhou Y, Li X, Li C, Zhang X, Yang X, Guan M, Xi Y. Lipidomic Alterations and PPAR α Activation Induced by Resveratrol Lead to Reduction in Lesion Size in Endometriosis Models. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9979953. [PMID: 34552688 PMCID: PMC8452402 DOI: 10.1155/2021/9979953] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 08/15/2021] [Accepted: 08/17/2021] [Indexed: 01/07/2023]
Abstract
Endometriosis is an estrogen-dependent chronic inflammatory disease that affects approximately 10% of women of reproductive age and up to 50% of women with infertility. The heterogeneity of the disease makes accurate diagnosis and treatment a clinical challenge. In this study, we generated two models of endometriosis: the first in rats and the second using human ectopic endometrial stromal cells (HEcESCs) derived from the lesion tissues of endometriosis patients. We then applied resveratrol to assess its therapeutic potential. Resveratrol intervention had significant efficacy to attenuate lesion size and to rectify aberrant lipid profiles of model rats. Lipidomic analysis revealed significant lipidomic alterations, including notable increases of sphingolipids and decreases of both glycerolipids and most phospholipids. Upon resveratrol application, both proliferation capacity and invasiveness parameters decreased, and the early apoptosis proportion increased for HEcESCs. The activation of PPARα was also noted as a factor potentially contributing to recovery from endometriosis in both models. Our study provides valuable insight into the mechanisms of resveratrol in endometriosis and therefore strengthens the potential for optimizing resveratrol treatment for this disease.
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Affiliation(s)
- Zhengyun Chen
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
| | - Chunyan Wang
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- Institute of Genetics, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Department of Human Genetics, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Hangzhou, Zhejiang 310058, China
| | - Cuicui Lin
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- Institute of Genetics, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Department of Human Genetics, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Hangzhou, Zhejiang 310058, China
| | - Lifeng Zhang
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
| | - Huimei Zheng
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- Institute of Genetics, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Department of Human Genetics, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Hangzhou, Zhejiang 310058, China
| | - Yong Zhou
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
| | - Xiaoyong Li
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
| | - Chen Li
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- Institute of Genetics, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Department of Human Genetics, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Hangzhou, Zhejiang 310058, China
| | - Xinmei Zhang
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
| | - Xiaohang Yang
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- Institute of Genetics, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Department of Human Genetics, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Hangzhou, Zhejiang 310058, China
- Joint Institute of Genetics and Genomic Medicine between Zhejiang University and University of Toronto, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Minxin Guan
- Institute of Genetics, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Department of Human Genetics, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Hangzhou, Zhejiang 310058, China
- Joint Institute of Genetics and Genomic Medicine between Zhejiang University and University of Toronto, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Division of Medical Genetics and Genomics, the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
| | - Yongmei Xi
- The Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, China
- Institute of Genetics, Zhejiang University, Hangzhou, Zhejiang 310058, China
- Department of Human Genetics, Zhejiang University School of Medicine, Zhejiang Provincial Key Laboratory of Genetic & Developmental Disorders, Hangzhou, Zhejiang 310058, China
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11
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Somuncu MU, Tatar FP, Serbest NG, Uygur B, Demir AR. Pentraxin-3 is Associated with Adverse Diastolic Remodeling in Patients with ST-Elevation Myocardial Infarction after Successful Reperfusion by Primary Percutaneous Intervention. J Cardiovasc Echogr 2021; 31:77-84. [PMID: 34485033 PMCID: PMC8388323 DOI: 10.4103/jcecho.jcecho_116_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Accepted: 03/05/2021] [Indexed: 12/25/2022] Open
Abstract
Background: Determinants of adverse diastolic remodeling in ST-elevated myocardial infarction (STEMI) after successful revascularization are not well established. Besides, the relationship between Pentraxin-3 (PTX-3) and diastolic function deterioration is unknown. This study hypothesizes that PTX-3 level would be associated with diastolic remodeling. Materials and Methods: Ninety-eight STEMI patients were included in our study. Echocardiography was performed before and 12–18 weeks after discharge. Two groups were generated according to the PTX-3 value, and the follow-up/baseline echocardiographic parameters were compared. Diastolic adverse remodeling was accepted as a persistent restrictive filling pattern or an increase in at least one grade of diastolic dysfunction. The independent predictors of diastolic adverse remodeling were investigated. Results: Adverse diastolic remodeling was detected in 19.3% of patients. High left ventricular mass index (odds ratio [OR]: 1.096, confidence interval [CI] 95%: 1.023–1.174, P = 0.009), high PTX-3 (OR: 1.005, CI 95%: 1.001–1.009, P = 0.024), and failing to achieve thrombolysis in myocardial infarction flow 3 after percutaneous coronary intervention (OR: 6.196, CI 95%: 1.370–28.023, P = 0.005) were determined as independent predictors of adverse diastolic remodeling. The ratio of follow-up/baseline left atrial volume index was higher in the high PTX-3 group (1.15 vs. 1.05, P = 0.029). Moreover, being in the high PTX-3 group predicted adverse diastolic remodeling at 7.4 times. Conclusion: Higher PTX-3 level is associated with adverse diastolic remodeling in STEMI patients.
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Affiliation(s)
- Mustafa Umut Somuncu
- Department of Cardiology, Zonguldak Bulent Ecevit University Faculty of Medicine, Zonguldak, Turkey
| | - Fatih Pasa Tatar
- Department of Cardiology, Zonguldak Bulent Ecevit University Faculty of Medicine, Zonguldak, Turkey
| | - Nail Guven Serbest
- Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, Istanbul, Turkey
| | - Begum Uygur
- Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, Istanbul, Turkey
| | - Ali Riza Demir
- Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Center, Training and Research Hospital, Istanbul, Turkey
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12
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Chen Z, Wang C, Lin C, Zhang L, Zheng H, Zhou Y, Li X, Li C, Zhang X, Yang X, Guan M, Xi Y. Lipidomic Alterations and PPAR α Activation Induced by Resveratrol Lead to Reduction in Lesion Size in Endometriosis Models. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021. [DOI: org/10.1155/2021/9979953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/17/2021] [Indexed: 09/05/2024]
Abstract
Endometriosis is an estrogen‐dependent chronic inflammatory disease that affects approximately 10% of women of reproductive age and up to 50% of women with infertility. The heterogeneity of the disease makes accurate diagnosis and treatment a clinical challenge. In this study, we generated two models of endometriosis: the first in rats and the second using human ectopic endometrial stromal cells (HEcESCs) derived from the lesion tissues of endometriosis patients. We then applied resveratrol to assess its therapeutic potential. Resveratrol intervention had significant efficacy to attenuate lesion size and to rectify aberrant lipid profiles of model rats. Lipidomic analysis revealed significant lipidomic alterations, including notable increases of sphingolipids and decreases of both glycerolipids and most phospholipids. Upon resveratrol application, both proliferation capacity and invasiveness parameters decreased, and the early apoptosis proportion increased for HEcESCs. The activation of PPARα was also noted as a factor potentially contributing to recovery from endometriosis in both models. Our study provides valuable insight into the mechanisms of resveratrol in endometriosis and therefore strengthens the potential for optimizing resveratrol treatment for this disease.
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13
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Hammad MM, Abu-Farha M, Al-Taiar A, Alam-Eldin N, Al-Sabah R, Shaban L, Al-Mulla F, Abubaker J, Rahman A. Correlation of circulating ANGPTL5 levels with obesity, high sensitivity C-reactive protein and oxidized low-density lipoprotein in adolescents. Sci Rep 2020; 10:6330. [PMID: 32286392 PMCID: PMC7156513 DOI: 10.1038/s41598-020-63076-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 03/24/2020] [Indexed: 12/12/2022] Open
Abstract
Angiopoietin-like proteins (ANGPTL) is a family of eight members known to play an important role in metabolic diseases. Of these, ANGPTL5 is suggested to regulate triglyceride metabolism and is increased in obesity and diabetes. However, its role in metabolic diseases in adolescents is not well-studied. In this study, we tested the hypothesis of a positive association between plasma ANGPTL5, and obesity, high sensitivity C-reactive protein (HsCRP) and oxidized low-density lipoprotein (Ox-LDL) in adolescents. Adolescents (N = 431; age 11–14 years) were randomly selected from middle schools in Kuwait. Obesity was classified by the BMI-for-age based on the WHO growth charts. Plasma ANGPTL5, HsCRP, and Ox-LDL were measured using ELISA. The prevalence of overweight and obesity was 20.65% and 33.18%, respectively. Mean (SD) plasma ANGPTL5 levels were significantly higher in obese, compared with overweight and normal-weight adolescents (23.05 (8.79) vs 18.39 (7.08) ng/mL, and 18.26 (6.95) ng/ml, respectively). ANGPTL5 was positively associated with both HsCRP (ρ=0.27, p < 0.001) and Ox-LDL (ρ = 0.24, p < 0.001). In Conclusion, ANGPTL5 levels are elevated in obese adolescents and are associated with cardiovascular disease risk factors, HsCRP and Ox-LDL. The use of ANGPTL5 as a powerful diagnostic and prognostic tool in obesity and metabolic diseases needs to be further evaluated.
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Affiliation(s)
- Maha M Hammad
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Mohamed Abu-Farha
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Abdullah Al-Taiar
- School of Community & Environmental Health, College of Health Sciences, Old Dominion University, Norfolk, VA, USA
| | - Nada Alam-Eldin
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Reem Al-Sabah
- Department of Community Medicine and Behavioural Sciences, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait
| | - Lemia Shaban
- Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Kuwait City, Kuwait
| | - Fahd Al-Mulla
- Genetics and Bioinformatics Department, Dasman Diabetes Institute, Kuwait City, Kuwait
| | - Jehad Abubaker
- Biochemistry and Molecular Biology Department, Dasman Diabetes Institute, Kuwait City, Kuwait.
| | - Abdur Rahman
- Department of Food Science and Nutrition, College of Life Sciences, Kuwait University, Kuwait City, Kuwait.
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14
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Tajbakhsh A, Rezaee M, Barreto GE, Moallem SA, Henney NC, Sahebkar A. The role of nuclear factors as “Find-Me”/alarmin signals and immunostimulation in defective efferocytosis and related disorders. Int Immunopharmacol 2020; 80:106134. [DOI: 10.1016/j.intimp.2019.106134] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 12/16/2019] [Accepted: 12/16/2019] [Indexed: 12/22/2022]
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15
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Larsen CP, Sharma SG, Caza TN, Kenan DJ, Storey AJ, Edmondson RD, Herzog C, Arthur JM. Serum amyloid P deposition is a sensitive and specific feature of membranous-like glomerulopathy with masked IgG kappa deposits. Kidney Int 2019; 97:602-608. [PMID: 32001064 PMCID: PMC7869973 DOI: 10.1016/j.kint.2019.10.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 10/01/2019] [Accepted: 10/17/2019] [Indexed: 11/26/2022]
Abstract
Membranous-like glomerulopathy with masked IgG kappa deposits (MGMID) is a recently described pattern of glomerulonephritis with a unique histopathology. The pattern is characterized by subepithelial and/or mesangial immune deposits that are “masked”, to immunoglobulin staining by routine immunofluorescence but strongly stain for IgG and kappa light chain after protease digestion. Patients with this pattern of glomerulonephritis are most commonly young females presenting with proteinuria and a vague history of autoimmune disease such as low titer antinuclear antibodies. Here we compared the mass spectrometry profile of laser capture microdissected glomeruli from nine MGMID renal biopsies with eight biopsies showing other patterns of membranous glomerulopathy. The protein most significantly increased in MGMID was serum amyloid P. Immunostaining showed serum amyloid P colocalized with IgG in the glomeruli of MGMID but not with PLA2R-associated membranous glomerulopathy. Serum amyloid P was positive in the glomeruli of all 32 MGMID biopsies but negative in biopsies of other types of membranous glomerulopathies such as those associated with PLA2R and THSD7A. There were four biopsies with glomerular serum amyloid P staining among the 173 biopsies that did not fulfill criteria for MGMID or amyloidosis. All four of these biopsies with positive serum amyloid P staining had a membranous pattern of glomerulopathy with IgG kappa deposits that only differed from MGMID by the lack of “masking”. Thus, positive staining within glomerular deposits for serum amyloid P identifies a unique form of glomerulonephritis likely sharing a common pathophysiologic mechanism of disease.
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Affiliation(s)
| | | | | | | | - Aaron J Storey
- University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Ricky D Edmondson
- University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Christian Herzog
- University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - John M Arthur
- University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
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16
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Idborg H, Zandian A, Sandberg AS, Nilsson B, Elvin K, Truedsson L, Sohrabian A, Rönnelid J, Mo J, Grosso G, Kvarnström M, Gunnarsson I, Lehtiö J, Nilsson P, Svenungsson E, Jakobsson PJ. Two subgroups in systemic lupus erythematosus with features of antiphospholipid or Sjögren's syndrome differ in molecular signatures and treatment perspectives. Arthritis Res Ther 2019; 21:62. [PMID: 30777133 PMCID: PMC6378708 DOI: 10.1186/s13075-019-1836-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 01/24/2019] [Indexed: 01/31/2023] Open
Abstract
Background Previous studies and own clinical observations of patients with systemic lupus erythematosus (SLE) suggest that SLE harbors distinct immunophenotypes. This heterogeneity might result in differences in response to treatment in different subgroups and obstruct clinical trials. Our aim was to understand how SLE subgroups may differ regarding underlying pathophysiology and characteristic biomarkers. Methods In a cross-sectional study, including 378 well-characterized SLE patients and 316 individually matched population controls, we defined subgroups based on the patients’ autoantibody profile at inclusion. We selected a core of an antiphospholipid syndrome-like SLE (aPL+ group; positive in the lupus anticoagulant (LA) test and negative for all three of SSA (Ro52 and Ro60) and SSB antibodies) and a Sjögren’s syndrome-like SLE (SSA/SSB+ group; positive for all three of SSA (Ro52 and Ro60) and SSB antibodies but negative in the LA test). We applied affinity-based proteomics, targeting 281 proteins, together with well-established clinical biomarkers and complementary immunoassays to explore the difference between the two predefined SLE subgroups. Results The aPL+ group comprised 66 and the SSA/SSB+ group 63 patients. The protein with the highest prediction power (receiver operating characteristic (ROC) area under the curve = 0.89) for separating the aPL+ and SSA/SSB+ SLE subgroups was integrin beta-1 (ITGB1), with higher levels present in the SSA/SSB+ subgroup. Proteins with the lowest p values comparing the two SLE subgroups were ITGB1, SLC13A3, and CERS5. These three proteins, rheumatoid factor, and immunoglobulin G (IgG) were all increased in the SSA/SSB+ subgroup. This subgroup was also characterized by a possible activation of the interferon system as measured by high KRT7, TYK2, and ETV7 in plasma. In the aPL+ subgroup, complement activation was more pronounced together with several biomarkers associated with systemic inflammation (fibrinogen, α-1 antitrypsin, neutrophils, and triglycerides). Conclusions Our observations indicate underlying pathogenic differences between the SSA/SSB+ and the aPL+ SLE subgroups, suggesting that the SSA/SSB+ subgroup may benefit from IFN-blocking therapies while the aPL+ subgroup is more likely to have an effect from drugs targeting the complement system. Stratifying SLE patients based on an autoantibody profile could be a way forward to understand underlying pathophysiology and to improve selection of patients for clinical trials of targeted treatments. Electronic supplementary material The online version of this article (10.1186/s13075-019-1836-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Helena Idborg
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, 171 76, Stockholm, Sweden
| | - Arash Zandian
- Division of Affinity Proteomics, SciLifeLab, Department of Protein Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Ann-Sofi Sandberg
- Clinical Proteomics Mass Spectrometry, Department of Oncology-Pathology, Science for Life Laboratory and Karolinska Institutet, Stockholm, Sweden
| | - Bo Nilsson
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Kerstin Elvin
- Unit of Clinical Immunology, Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Karolinska Institutet, Solna, Stockholm, Sweden
| | - Lennart Truedsson
- Section of Microbiology, Immunology and Glycobiology, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Azita Sohrabian
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Johan Rönnelid
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - John Mo
- Patient Safety Respiratory, Inflammation, Autoimmunity, Infection and Vaccines, AstraZeneca R&D, Gothenburg, Sweden
| | - Giorgia Grosso
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, 171 76, Stockholm, Sweden
| | - Marika Kvarnström
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, 171 76, Stockholm, Sweden
| | - Iva Gunnarsson
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, 171 76, Stockholm, Sweden
| | - Janne Lehtiö
- Clinical Proteomics Mass Spectrometry, Department of Oncology-Pathology, Science for Life Laboratory and Karolinska Institutet, Stockholm, Sweden
| | - Peter Nilsson
- Division of Affinity Proteomics, SciLifeLab, Department of Protein Science, KTH Royal Institute of Technology, Stockholm, Sweden
| | - Elisabet Svenungsson
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, 171 76, Stockholm, Sweden.
| | - Per-Johan Jakobsson
- Division of Rheumatology, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, 171 76, Stockholm, Sweden.
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17
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Pilling D, Gomer RH. The Development of Serum Amyloid P as a Possible Therapeutic. Front Immunol 2018; 9:2328. [PMID: 30459752 PMCID: PMC6232687 DOI: 10.3389/fimmu.2018.02328] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/19/2018] [Indexed: 02/06/2023] Open
Abstract
Pentraxins such as serum amyloid P (SAP; also known as PTX2) regulate several aspects of the innate immune system. SAP inhibits the differentiation of monocyte-derived fibroblast-like cells called fibrocytes, promotes the formation of immuno-regulatory macrophages, and inhibits neutrophil adhesion to extracellular matrix proteins. In this minireview, we describe how these effects of SAP have led to its possible use as a therapeutic, and how modulating SAP effects might be used for other therapeutics. Fibrosing diseases such as pulmonary fibrosis, cardiac fibrosis, liver fibrosis, and renal fibrosis are associated with 30-45% of deaths in the US. Fibrosis involves both fibrocyte differentiation and profibrotic macrophage differentiation, and possibly because SAP inhibits both of these processes, in 9 different animal models, SAP inhibited fibrosis. In Phase 1B and Phase 2 clinical trials, SAP injections reduced the decline in lung function in pulmonary fibrosis patients, and in a small Phase 2 trial SAP injections reduced fibrosis in myelofibrosis patients. Acute respiratory distress syndrome/ acute lung injury (ARDS/ALI) involves the accumulation of neutrophils in the lungs, and possibly because SAP inhibits neutrophil adhesion, SAP injections reduced the severity of ARDS in an animal model. Conversely, depleting SAP is a potential therapeutic for amyloidosis, topically removing SAP from wound fluid speeds wound healing in animal models, and blocking SAP binding to one of its receptors makes cultured macrophages more aggressive toward tuberculosis bacteria. These results suggest that modulating pentraxin signaling might be useful for a variety of diseases.
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Affiliation(s)
- Darrell Pilling
- Department of Biology, Texas A&M University, College Station, TX, United States
| | - Richard H Gomer
- Department of Biology, Texas A&M University, College Station, TX, United States
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18
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Martiskainen H, Takalo M, Solomon A, Stančáková A, Marttinen M, Natunen T, Haapasalo A, Herukka SK, Kuusisto J, Soininen H, Kivipelto M, Laakso M, Hiltunen M. Decreased plasma C-reactive protein levels in APOE ε4 allele carriers. Ann Clin Transl Neurol 2018; 5:1229-1240. [PMID: 30349858 PMCID: PMC6186931 DOI: 10.1002/acn3.639] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/07/2018] [Accepted: 08/10/2018] [Indexed: 02/06/2023] Open
Abstract
Objective Apolipoprotein E (APOE) ε4 allele is a well‐established risk factor in Alzheimer's disease (AD). Here, we assessed the effects of APOE polymorphism on cardiovascular, metabolic, and inflammation‐related parameters in population‐based cohorts. Methods Association of cardiovascular, metabolic, and inflammation‐related parameters with the APOE polymorphism in a large Finnish Metabolic Syndrome in Men (METSIM) cohort and Finnish Geriatric Intervention study to prevent cognitive impairment and disability (FINGER) were investigated. Brain‐specific effects were addressed in postmortem brain samples. Results Individuals carrying the APOE ε4 allele displayed significantly elevated serum/plasma LDL cholesterol and apolipoprotein B levels. APOE ε3ε4 and ε4ε4 significantly associated with lower levels of plasma high‐sensitivity C‐reactive protein (hs‐CRP). Plasma amyloid‐β 42 (Aβ42) and reduced hs‐CRP levels showed an association independently of the APOE status. Interpretation These data suggest that the APOE ε4 allele associates with lower levels of hs‐CRP in individuals without dementia. Moreover, Aβ42 may encompass anti‐inflammatory effects reflected by reduced hs‐CRP levels.
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Affiliation(s)
- Henna Martiskainen
- Institute of Clinical Medicine Internal Medicine University of Eastern Finland P.O. Box 1627 Kuopio 70211 Finland
| | - Mari Takalo
- Institute of Biomedicine University of Eastern Finland Yliopistonranta 1 E, P.O. Box 1627 Kuopio 70211 Finland
| | - Alina Solomon
- Department of Neurology Institute of Clinical Medicine University of Eastern Finland P.O. Box 1627 Kuopio 70211 Finland.,Division of Clinical Geriatrics Center for Alzheimer Research NVS, Karolinska Institutet Novum 5th floor Huddinge 14157 Sweden
| | - Alena Stančáková
- Institute of Clinical Medicine Internal Medicine University of Eastern Finland P.O. Box 1627 Kuopio 70211 Finland
| | - Mikael Marttinen
- Institute of Biomedicine University of Eastern Finland Yliopistonranta 1 E, P.O. Box 1627 Kuopio 70211 Finland
| | - Teemu Natunen
- Institute of Biomedicine University of Eastern Finland Yliopistonranta 1 E, P.O. Box 1627 Kuopio 70211 Finland
| | - Annakaisa Haapasalo
- A.I Virtanen Institute for Molecular Sciences University of Eastern Finland Neulaniementie 2 Kuopio 70211 Finland
| | - Sanna-Kaisa Herukka
- Department of Neurology Institute of Clinical Medicine University of Eastern Finland P.O. Box 1627 Kuopio 70211 Finland.,Neurocenter Neurology Kuopio University Hospital Kuopio Finland
| | - Johanna Kuusisto
- Institute of Clinical Medicine Internal Medicine University of Eastern Finland P.O. Box 1627 Kuopio 70211 Finland.,Kuopio University Hospital Kuopio Finland
| | - Hilkka Soininen
- Department of Neurology Institute of Clinical Medicine University of Eastern Finland P.O. Box 1627 Kuopio 70211 Finland.,Neurocenter Neurology Kuopio University Hospital Kuopio Finland
| | - Miia Kivipelto
- Department of Neurology Institute of Clinical Medicine University of Eastern Finland P.O. Box 1627 Kuopio 70211 Finland.,Division of Clinical Geriatrics Center for Alzheimer Research NVS, Karolinska Institutet Novum 5th floor Huddinge 14157 Sweden.,Department of Public Health Solutions Public Health Promotion Unit National Institute for Health and Welfare PO Box 30 Helsinki 00271 Finland
| | - Markku Laakso
- Institute of Clinical Medicine Internal Medicine University of Eastern Finland P.O. Box 1627 Kuopio 70211 Finland.,Kuopio University Hospital Kuopio Finland
| | - Mikko Hiltunen
- Institute of Biomedicine University of Eastern Finland Yliopistonranta 1 E, P.O. Box 1627 Kuopio 70211 Finland
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19
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Wang YH, Zhang YG. Amyloid and immune homeostasis. Immunobiology 2018; 223:288-293. [DOI: 10.1016/j.imbio.2017.10.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 10/14/2017] [Indexed: 01/06/2023]
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20
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Acute phase reactant, Pentraxin 3, as a novel marker for the diagnosis of rheumatoid arthritis. Clin Chim Acta 2018; 480:65-70. [PMID: 29408170 DOI: 10.1016/j.cca.2018.01.035] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/16/2018] [Accepted: 01/19/2018] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Pentraxins are a group of highly conserved acute-phase reactant proteins and play crucial role as modulators of inflammatory processes. Pentraxin 3 (PTX3) is primarily produced and released by vascular cell wall, hence, we attempt to establish the role of PTX3 as a biomarker for Rheumatoid Arthritis (RA) compared to CRP. METHODS Thirty patients having active RA as cases and 30 osteoarthritis (OA) patients as controls were recruited. Paired serum and synovial fluid samples were analysed for concentrations of both PTX3 and CRP by using high sensitivity ELISA kit and ROC curve was plotted. RESULTS Concentrations of PTX3 and CRP were significantly higher in RA patient serum (p < 0.0001) as well as in synovial fluid (p < 0.0001) and correlated with disease severity. Upon correlation analysis, positive correlation was found between serum and synovial fluid concentrations of PTX3 and CRP. The diagnostic potential of PTX3 was observed in synovial fluid while combination of PTX3 and CRP showed better sensitivity in serum. CONCLUSION PTX3 found to be sensitive non-invasive indicator of clinical arthritic activity in RA patients when compared to traditional markers like CRP. Combination of PTX3 and CRP could serve as better differential diagnostic markers for RA after validation in larger patient cohort.
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Alsaad KM, Alautaish HHN, Alamery MAY. Congenital arthrogryposis-hydranencephaly syndrome caused by Akabane virus in newborn calves of Basrah Governorate, Iraq. Vet World 2017; 10:1143-1148. [PMID: 29062207 PMCID: PMC5639116 DOI: 10.14202/vetworld.2017.1143-1148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 08/30/2017] [Indexed: 12/19/2022] Open
Abstract
Aim: The study was conducted in Basrah, Iraq, to diagnose congenital arthrogryposis-hydranencephaly syndrome caused by Akabane virus (AKAV) in calves. Materials and Methods: Affected animals (42 calves) are about 2-27 days old from both sexes show signs of arthrogryposis and hydranencephaly. Eight clinically healthy newborn calves were considered as controls. Diagnosis of AKAV was confirmed using a competition enzyme-linked immunosorbent assay test. Results: Results show that all affected calves were found seropositive. Furthermore, a significant increase in total leukocyte count in diseased calves due to a significant increase in the absolute lymphocyte number indicated in affected calves than in controls. Moreover, a significant increase in sedimentation rate of erythrocytes was also encountered in diseased calves than in controls. In addition, a significant increase in haptoglobin level and fibrinogen was also detected. Conclusion: Diagnosis of AKAV infection of Basrah Governorate, Iraq, will provide useful epidemiological information for cattle and other domesticated animals. Therefore, abortion could be prevented and controlled.
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Affiliation(s)
- K M Alsaad
- Department of Internal and Preventive Medicine, College of Veterinary Medicine, University of Basrah, Basrah, Iraq
| | - H H N Alautaish
- Department of Internal and Preventive Medicine, College of Veterinary Medicine, University of Basrah, Basrah, Iraq
| | - M A Y Alamery
- Department of Internal and Preventive Medicine, College of Veterinary Medicine, University of Basrah, Basrah, Iraq
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22
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Cieslinski JZ, Skare TL, Nisihara R, De Messias-Reason IJ, Utiyama SRR. Mannose-binding lectin serum levels in patients with systemic lupus erythematosus: association with thrombocytopaenia and seizure. Lupus 2017; 27:372-379. [PMID: 28786770 DOI: 10.1177/0961203317722846] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The complement system contributes to the pathogenesis of systemic lupus erythematosus (SLE). Mannose-binding lectin (MBL) is a key molecule of the lectin pathway of complement and seems to be related to the clinical manifestations of this disease. We evaluated the serum levels of MBL and its relationship with disease onset and clinical findings in SLE patients. Serum samples were analysed in 195 patients and 145 healthy controls from southern Brazil. Patients with high MBL levels (above 2000 ng/ml) showed a significant increase in the frequency of thrombocytopaenia ( p = 0.007; OR = 2.71; 95% CI = 1.32-5.55); and seizures ( p = 0.034; OR = 2.61; 95% CI = 1.07-6.37). A positive correlation between disease activity and MBL levels (>2000 ng/ml; p = 0.031, rho = 0.279) as well as of MBL concentration with accumulated organ damage ( p = 0.021; rho = 0.232) was observed. Our results suggest a role for MBL in the development of clinical manifestations such as thrombocytopaenia and seizures in SLE patients. These findings corroborate the participation of the lectin pathway of complement in the pathophysiologic mechanisms underlying clinical manifestations of SLE.
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Affiliation(s)
- J Z Cieslinski
- 1 Laboratory of Immunopathology, Clinical Hospital, Federal University of Paraná, Curitiba, Brazil
| | - T L Skare
- 2 Rheumatology Clinic, Evangelical University Hospital of Curitiba, Curitiba, Brazil
| | - R Nisihara
- 1 Laboratory of Immunopathology, Clinical Hospital, Federal University of Paraná, Curitiba, Brazil.,3 Department of Medicine, Positivo University, Curitiba, Brazil
| | - I J De Messias-Reason
- 1 Laboratory of Immunopathology, Clinical Hospital, Federal University of Paraná, Curitiba, Brazil
| | - S R R Utiyama
- 1 Laboratory of Immunopathology, Clinical Hospital, Federal University of Paraná, Curitiba, Brazil.,4 Department of Clinical Analysis, Federal University of Paraná, Curitiba, Brazil
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23
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Guo T, Huang L, Liu C, Shan S, Li Q, Ke L, Cheng B. The clinical value of inflammatory biomarkers in coronary artery disease: PTX3 as a new inflammatory marker. Exp Gerontol 2017; 97:64-67. [PMID: 28778748 DOI: 10.1016/j.exger.2017.07.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 07/09/2017] [Accepted: 07/30/2017] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Previous experiments have demonstrated that several inflammatory biomarkers, including pentraxin 3 (PTX3), matrix metalloprotein 9 (MMP9), interleukin-6 (IL-6), and the neutrophil to lymphocyte ratio (NLR), are differentially elevated in coronary artery disease (CAD). This study aims to compare the associations between plasma levels of these biomarkers and CAD, identifying the best biomarker that has the most powerful association with CAD. METHODS Blood samples were collected from 64 patients admitted to the Department of Cardiology, 31 of whom had CAD and 33 of whom were CAD-free. Plasma levels of PTX3, MMP9, and IL-6 were measured via ELISA. The coronary Gensini score was used to evaluate the severity of coronary artery lesions. RESULTS PTX3 levels and NLR levels between the CAD group and the CAD-free group were statistically significant (P<0.05). Stepwise multiple linear regression analysis showed that PTX3 levels and NLR levels were independently associated with CAD (r=1.3, P<0.05; r=1.8, P<0.05). Only PTX3 was associated with the severity of coronary artery stenosis. A PTX3 threshold of 4.38ng/mL maximized true-positive and false-negative results. PTX3 displayed a greater area under the receiver operating characteristic curve (AUC) than NLR, MMP9, and IL-6 (0.733 versus 0.612 versus 0.725 versus 0.518). CONCLUSIONS Compared to NLR, MMP9, and IL-6, PTX3 displayed greater AUC and association with CAD. PTX3 may become a potentially powerful inflammatory biomarker for CAD.
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Affiliation(s)
- Tangmeng Guo
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lili Huang
- Department of Clinical Laboratory Medicine, People's Hospital of Dongxihu District Wuhan City, Wuhan 430040, China.
| | - Cunfei Liu
- Department of Cardiology, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200336, China
| | - Shengshuai Shan
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Qing Li
- Institute and Department of Endocrinology and Metabolism, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai 200011, China
| | - Li Ke
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Bei Cheng
- Department of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Geriatrics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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O'Reilly EL, Burchmore RJ, Sparks NH, Eckersall PD. The effect of microbial challenge on the intestinal proteome of broiler chickens. Proteome Sci 2017; 15:10. [PMID: 28572745 PMCID: PMC5450085 DOI: 10.1186/s12953-017-0118-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 05/02/2017] [Indexed: 12/12/2022] Open
Abstract
Background In poultry production intestinal health and function is paramount to achieving efficient feed utilisation and growth. Uncovering the localised molecular mechanisms that occur during the early and important periods of growth that allow birds to grow optimally is important for this species. The exposure of young chicks to used litter from older flocks, containing mixed microbial populations, is a widely utilised model in poultry research. It rarely causes mortality but effects an immunogenic stimulation sufficient enough to cause reduced and uneven growth that is reflective of a challenging growing environment. Methods A mixed microbial challenge was delivered as used litter containing Campylobacter jejuni and coccidial oocysts to 120 male Ross 308 broiler chicks, randomly divided into two groups: control and challenged. On day 12, 15, 18 and 22 (pre- and 3, 6 and 10 days post-addition of the used litter) the proximal jejunum was recovered from 6 replicates per group and differentially abundant proteins identified between groups and over time using 2D DiGE. Results The abundance of cytoskeletal proteins of the chicken small intestinal proteome, particularly actin and actin associated proteins, increased over time in both challenged and control birds. Villin-1, an actin associated anti-apoptotic protein, was reduced in abundance in the challenged birds indicating that many of the changes in cytoskeletal protein abundance in the challenged birds were as a result of an increased rate of apoptosis. A number of heat shock proteins decreased in abundance over time in the intestine and this was more pronounced in the challenged birds. Conclusions The small intestinal proteome sampled from 12 to 22 days of age showed considerable developmental change, comparable to other species indicating that many of the changes in protein abundance in the small intestine are conserved among vertebrates. Identifying and distinguishing the changes in proteins abundance and molecular pathways that occur as a result of normal growth from those that occur as a result of a challenging microbial environment is important in this major food producing animal.
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Affiliation(s)
- Emily L O'Reilly
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, Glasgow University, Glasgow, UK
| | - Richard J Burchmore
- Glasgow Polyomics Facility, College of Medical, Veterinary and Life Sciences, Glasgow University, Glasgow, UK
| | - Nicholas H Sparks
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, Easter Bush, Midlothian, EH25 9RG UK
| | - P David Eckersall
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, Glasgow University, Glasgow, UK
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Alnaas AA, Moon CL, Alton M, Reed SM, Knowles MK. Conformational Changes in C-Reactive Protein Affect Binding to Curved Membranes in a Lipid Bilayer Model of the Apoptotic Cell Surface. J Phys Chem B 2017; 121:2631-2639. [PMID: 28225631 DOI: 10.1021/acs.jpcb.6b11505] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
C-reactive protein (CRP) is a serum protein that binds to damaged membranes through a phosphatidylcholine binding site. The membrane binding process can initiate the complement immune response and facilitates the clearance of apoptotic cells, likely aiding in the protection of autoimmunity. The initiation of an immune response relies on a conformation change from a native, pentameric form to a modified form, where the modified form binds complement proteins (i.e., C1q) and regulatory proteins substantially better than the native form. In vitro, this reactivity is observed when CRP is monomeric, and a modified form has also been observed at sites of inflammation. Despite evidence that the monomeric form has much higher affinities for almost all proteinaceous binding partners, the role of CRP conformation on lipid binding is yet unknown. In this work, we mimic the outer leaflet of apoptotic cell membranes using a nanopatterned substrate to create curved, supported lipid bilayers and then characterize how CRP conformation affects the interactions between CRP and target membranes. In this assay, the chemical composition and shape are separately tunable parameters. The lipids consisted primarily of palmitoyloleoylphosphatidylcholine, with and without lysophosphatidylcholine, and the curvature had a radius of 27-55 nm. Using this model system combined with quantitative fluorescence microscopy methods, CRP binding to lipid membranes was measured as a function of different conformations of CRP. The modified form of CRP bound curved membranes, but the pentameric form did not for the range of curvatures measured. Unlike most other curvature-sensing proteins, modified CRP accumulated more at a moderate curvature, rather than highly curved or flat regions, suggesting that the membrane bound form does not solely depend on a defect binding mechanism. The presence of lysophosphatidylcholine, a component of apoptotic membranes, increased CRP binding to all types of membranes. Overall, our results show that CRP interactions vary with protein form, lipid composition, and membrane shape. The mechanism by which CRP recognizes damaged membranes depends on the combination of all three.
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Affiliation(s)
- Aml A Alnaas
- Department of Chemistry and Biochemistry, University of Denver , Denver, Colorado 80208, United States
| | - Carrie L Moon
- Molecular and Cellular Biophysics, University of Denver , Denver, Colorado 80208, United States
| | - Mitchell Alton
- Department of Chemistry and Biochemistry, University of Denver , Denver, Colorado 80208, United States
| | - Scott M Reed
- Department of Chemistry, University of Colorado Denver , Denver, Colorado 80204, United States
| | - Michelle K Knowles
- Department of Chemistry and Biochemistry, University of Denver , Denver, Colorado 80208, United States.,Molecular and Cellular Biophysics, University of Denver , Denver, Colorado 80208, United States
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Patel DM, Brinchmann MF. Skin mucus proteins of lumpsucker ( Cyclopterus lumpus). Biochem Biophys Rep 2017; 9:217-225. [PMID: 28956008 PMCID: PMC5614610 DOI: 10.1016/j.bbrep.2016.12.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 12/20/2016] [Indexed: 12/17/2022] Open
Abstract
Fish skin mucus serves as a first line of defense against pathogens and external stressors. In this study the proteomic profile of lumpsucker skin mucus was characterized using 2D gels coupled with tandem mass spectrometry. Mucosal proteins were identified by homology searches across the databases SwissProt, NCBInr and vertebrate EST. The identified proteins were clustered into ten groups based on their gene ontology biological process in PANTHER (www.patherdb.org). Calmodulin, cystatin-B, histone H2B, peroxiredoxin1, apolipoprotein A1, natterin-2, 14-3-3 protein, alfa enolase, pentraxin, warm temperature acclimation 65 kDa (WAP65kDa) and heat shock proteins were identified. Several of the proteins are known to be involved in immune and/or stress responses. Proteomic profile established in this study could be a benchmark for differential proteomics studies. A proteome reference map of lumpsucker skin mucus was established. Proteins involved in immune and stress responses were identified in skin mucus of Cyclopterus lumpus. Mucosal proteins identified could be potential biomarkers.
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27
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Nisihara R, Skare TL, Zeni JO, Rasera H, Lidani K, Messias-Reason I. Plasma levels of pentraxin 3 in patients with spondyloarthritis. Biomarkers 2017; 23:14-17. [PMID: 28043168 DOI: 10.1080/1354750x.2016.1278265] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
CONTEXT Determining the disease's inflammatory activity in spondyloarthritis (SpA) is difficult although very important as it is this that drives treatment. OBJECTIVE To investigate if plasma pentraxin-3 (PTX3) could act as an inflammatory marker in SpA. METHODS Eighty one SpA patients (11 with psoriatic arthritis (PsoA) and 70 with ankylosing spondylitis (AS)) and 90 gender and age paired controls were studied for plasma PTX3 levels by ELISA. Patients had determinations of disease activity through C reactive protein (CRP), erythrocyte sedimentation rate (ESR), Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and Ankylosing Spondylitis Disease Activity Score (ASDAS)-CRP. Epidemiological, clinical and treatment data were collected through chart review. RESULTS SpA patients had lower concentrations of plasma PTX3 than controls (median of 0.95 ng/mL vs 1.64 ng/mL; p < 0.0001). Correlation of PTX3 levels and BASDAI, ASDAS-CPR, CRP levels and ESR could not be found. No differences in PTX3 levels were detected between PSoA and AS patients (p = 0.42). Uveitis, presence of HLA B27, tobacco exposure, age and disease duration did not influence PTX3 levels. CONCLUSIONS PTX3 plasma levels do not reflect disease activity in SpA. However, it probably participates in the ethiopathogenetic process, as it is consumed in these patients.
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Affiliation(s)
- Renato Nisihara
- a Department of Medicine , Positivo University , Curitiba , Paraná , Brazil.,b Immunopathology Molecular Laboratory, Clinical Hospital , Federal University of Paraná , Curitiba , Paraná , Brazil
| | - Thelma L Skare
- c Rheumatology Unit, Evangelical University , Curitiba , Paraná , Brazil
| | - João Otávio Zeni
- c Rheumatology Unit, Evangelical University , Curitiba , Paraná , Brazil
| | - Henrique Rasera
- c Rheumatology Unit, Evangelical University , Curitiba , Paraná , Brazil
| | - Karita Lidani
- b Immunopathology Molecular Laboratory, Clinical Hospital , Federal University of Paraná , Curitiba , Paraná , Brazil
| | - Iara Messias-Reason
- b Immunopathology Molecular Laboratory, Clinical Hospital , Federal University of Paraná , Curitiba , Paraná , Brazil
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Köbis JM, Rebl H, Goldammer T, Rebl A. Multiple gene and transcript variants encoding trout C-polysaccharide binding proteins are differentially but strongly induced after infection with Aeromonas salmonicida. FISH & SHELLFISH IMMUNOLOGY 2017; 60:509-519. [PMID: 27836722 DOI: 10.1016/j.fsi.2016.11.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 11/03/2016] [Accepted: 11/07/2016] [Indexed: 06/06/2023]
Abstract
Two 'trout C-polysaccharide-binding proteins,' TCBP1 and -2, with relevance to early inflammatory events have been discovered in the last century. The present study characterises the respective cDNA sequences from rainbow trout (Oncorhynchus mykiss), including multiple TCBP1 transcript variants. These variants are generated either by the use of alternative splice sites or the exclusion of exons. The longest mRNA isoform, TCBP1-1, encodes a 245-aa protein with a large signal peptide and a complement component C1q domain. The shortest mRNA isoform, TCBP1-5, contains a premature termination codon and hence fails to encode a functional factor. The 224-aa-long TCBP2 protein consists of a comparably shorter signal peptide and a pentraxin domain. Evolutionary analyses clearly separated TCBP1 and -2 because of distinctive protein motifs. Expression profiling in the liver, spleen, and head kidney tissues of healthy trout revealed that TCBP2 mRNA concentrations were higher than the concentrations of all five TCBP1 mRNA isoforms together. The hepatic levels of these TCBP1 variants increased significantly upon infection with Aeromonas salmonicida, whereas TCBP2 transcript levels rose moderately. As the biological function of TCBP1 is barely understood, we tagged this factor with the green fluorescent protein and visualised its expression in HEK-293 cells. Overexpression of TCBP1 increased the level of active NF-κB factors and induced cell death, indicating its involvement in proapoptotic NF-κB-dependent signalling routes.
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Affiliation(s)
- Judith M Köbis
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Henrike Rebl
- Rostock University Medical Center, Department of Cell Biology, Schillingallee 69, 18057 Rostock, Germany
| | - Tom Goldammer
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany
| | - Alexander Rebl
- Leibniz Institute for Farm Animal Biology (FBN), Institute for Genome Biology, Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany.
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Plawecki M, Lheritier E, Clavarino G, Jourde-Chiche N, Ouili S, Paul S, Gout E, Sarrot-Reynauld F, Bardin N, Boëlle PY, Chiche L, Bouillet L, Thielens NM, Cesbron JY, Dumestre-Pérard C. Association between the Presence of Autoantibodies Targeting Ficolin-3 and Active Nephritis in Patients with Systemic Lupus Erythematosus. PLoS One 2016; 11:e0160879. [PMID: 27631981 PMCID: PMC5025237 DOI: 10.1371/journal.pone.0160879] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 07/26/2016] [Indexed: 01/23/2023] Open
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by the production of multiple autoantibodies. Antibodies against Ficolin-3 were previously identified in the sera of some SLE patients, but their prevalence and significance have not been yet investigated. The aims of this study were to determine the prevalence of anti-ficolin-3 antibodies among SLE patients and to investigate their potential as diagnostic and/or prognostic biomarkers in SLE. In this retrospective study, sera from SLE patients (n = 165) were selected from a preexisting declared biological collection. Samples from healthy controls (n = 48) were matched with SLE sera. Disease activity was determined according to the SLEDAI score. Anti-ficolin-3, anti-dsDNA and anti-C1q antibodies levels were measured in sera by ELISA. First, a highly significant difference was found in the anti-ficolin-3 levels between SLE patients and healthy subjects. Anti-ficolin-3 antibodies were detected as positive in 56 of 165 (34%) SLE patients. The titer of anti-ficolin-3 antibodies was correlated with the SLEDAI score (r = 0.38, p<0.0001). The presence of anti-ficolin-3 antibodies was associated with anti-C1q and anti-dsDNA antibodies. Regarding associations with clinical manifestations, the presence of active lupus nephritis was significantly associated with the presence of anti-ficolin-3 antibodies (p≤0.001). This association with renal involvement was higher with anti-ficolin-3 or anti-C1q antibodies than with other auto-antibodies. Interestingly, the combination of anti-ficolin-3 and anti-C1q antibodies demonstrated higher specificity than any other serological biomarker. These results suggest that anti-ficolin-3 antibodies could be useful for the diagnosis of active nephritis in SLE patients.
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Affiliation(s)
- Maëlle Plawecki
- Laboratoire d’Immunologie, pôle de Biologie, CHU Grenoble Alpes, Grenoble, France
| | - Elise Lheritier
- Laboratoire d’Immunologie, pôle de Biologie, CHU Grenoble Alpes, Grenoble, France
| | - Giovanna Clavarino
- Laboratoire d’Immunologie, pôle de Biologie, CHU Grenoble Alpes, Grenoble, France
- BNI team, TIMC-IMAG UMR5525 Université Grenoble Alpes, France
| | - Noémie Jourde-Chiche
- UMR_S 1076, Vascular Research Center of Marseille, Faculté de médecine, Aix-Marseille Université, Marseille, France
- Centre de Néphrologie et Transplantation Rénale, CHU de la Conception, Aix-Marseille University, Marseille, France
| | - Saber Ouili
- Laboratoire d’Immunologie, pôle de Biologie, CHU Grenoble Alpes, Grenoble, France
| | - Stéphane Paul
- Laboratoire d’Immunologie, GIMAPEA3064, CIC1488 Vaccinology INSERM, CHU de Saint-Etienne, Saint-Etienne, France
| | - Evelyne Gout
- Univ Grenoble Alpes, IBS, Grenoble, France
- CNRS, IBS, Grenoble, France
- CEA, IBS, Grenoble, France
| | - Françoise Sarrot-Reynauld
- Clinique Universitaire de Médecine Interne, pôle pluridisciplinaire de Médecine et de Gérontologie Clinique, CHU Grenoble Alpes, Grenoble, France
| | - Nathalie Bardin
- UMR_S 1076, Vascular Research Center of Marseille, Faculté de médecine, Aix-Marseille Université, Marseille, France
- Laboratoire d’Immunologie, Hôpital de la Conception, Aix-Marseille Université, Marseille, France
| | - Pierre -Yves Boëlle
- INSERM, UMR_S 1136, Institut Pierre Louis d'Epidémiologie et de Santé Publique, Paris, France
| | - Laurent Chiche
- Service de Médecine Interne, Hôpital Européen, Marseille, France
| | - Laurence Bouillet
- Clinique Universitaire de Médecine Interne, pôle pluridisciplinaire de Médecine et de Gérontologie Clinique, CHU Grenoble Alpes, Grenoble, France
| | - Nicole M. Thielens
- Univ Grenoble Alpes, IBS, Grenoble, France
- CNRS, IBS, Grenoble, France
- CEA, IBS, Grenoble, France
| | - Jean-Yves Cesbron
- Laboratoire d’Immunologie, pôle de Biologie, CHU Grenoble Alpes, Grenoble, France
- BNI team, TIMC-IMAG UMR5525 Université Grenoble Alpes, France
| | - Chantal Dumestre-Pérard
- Laboratoire d’Immunologie, pôle de Biologie, CHU Grenoble Alpes, Grenoble, France
- BNI team, TIMC-IMAG UMR5525 Université Grenoble Alpes, France
- * E-mail:
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Ummenthum K, Peferoen LAN, Finardi A, Baker D, Pryce G, Mantovani A, Bsibsi M, Bottazzi B, Peferoen-Baert R, van der Valk P, Garlanda C, Kipp M, Furlan R, van Noort JM, Amor S. Pentraxin-3 is upregulated in the central nervous system during MS and EAE, but does not modulate experimental neurological disease. Eur J Immunol 2015; 46:701-11. [PMID: 26576501 DOI: 10.1002/eji.201545950] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 10/13/2015] [Accepted: 11/12/2015] [Indexed: 12/30/2022]
Abstract
Pentraxin-3 (PTX3), an acute-phase protein released during inflammation, aids phagocytic clearance of pathogens and apoptotic cells, and plays diverse immunoregulatory roles in tissue injury. In neuroinflammatory diseases, like MS, resident microglia could become activated by endogenous agonists for Toll like receptors (TLRs). Previously we showed a strong TLR2-mediated induction of PTX3 in cultured human microglia and macrophages by HspB5, which accumulates in glia during MS. Given the anti-inflammatory effects of HspB5, we examined the contribution of PTX3 to these effects in MS and its animal model EAE. Our data indicate that TLR engagement effectively induces PTX3 expression in human microglia, and that such expression is readily detectable in MS lesions. Enhanced PTX3 expression is prominently expressed in microglia in preactive MS lesions, and in microglia/macrophages engaged in myelin phagocytosis in actively demyelinating lesions. Yet, we did not detect PTX3 in cerebrospinal fluid of MS patients. PTX3 expression is also elevated in spinal cords during chronic relapsing EAE in Biozzi ABH mice, but the EAE severity and time course in PTX3-deficient mice did not differ from WT mice. Moreover, systemic PTX3 administration did not alter the disease onset or severity. Our findings reveal local functions of PTX3 during neuroinflammation in facilitating myelin phagocytosis, but do not point to a role for PTX3 in controlling the development of autoimmune neuroinflammation.
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Affiliation(s)
- Kimberley Ummenthum
- Department of Pathology, VU University Medical Centre, Amsterdam, The Netherlands
| | - Laura A N Peferoen
- Department of Pathology, VU University Medical Centre, Amsterdam, The Netherlands
| | - Annamaria Finardi
- Clinical Neuroimmunology Unit, Dept. of Neuroscience, San Raffaele Hospital, Milan, Italy
| | - David Baker
- Queen Mary University of London, Blizard Institute, Barts and The London School of Medicine and Dentistry
| | - Gareth Pryce
- Queen Mary University of London, Blizard Institute, Barts and The London School of Medicine and Dentistry
| | - Alberto Mantovani
- IRCCS Humanitas Clinical and Research Center and Humanitas University, Milan, Italy
| | | | - Barbara Bottazzi
- IRCCS Humanitas Clinical and Research Center and Humanitas University, Milan, Italy
| | | | - Paul van der Valk
- Department of Pathology, VU University Medical Centre, Amsterdam, The Netherlands
| | - Cecilia Garlanda
- IRCCS Humanitas Clinical and Research Center and Humanitas University, Milan, Italy
| | - Markus Kipp
- Department of Anatomy II, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Roberto Furlan
- Clinical Neuroimmunology Unit, Dept. of Neuroscience, San Raffaele Hospital, Milan, Italy
| | | | - Sandra Amor
- Department of Pathology, VU University Medical Centre, Amsterdam, The Netherlands.,Queen Mary University of London, Blizard Institute, Barts and The London School of Medicine and Dentistry
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Kang SS, Baik JE, Yang JS, Cho K, Yun CH, Han SH. Protein profiles in mucosal and systemic compartments in response to Vibrio cholerae in a mouse pulmonary infection model. Microb Pathog 2015; 86:10-7. [PMID: 26150210 DOI: 10.1016/j.micpath.2015.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 06/17/2015] [Accepted: 07/02/2015] [Indexed: 11/19/2022]
Abstract
We have recently shown that a mouse lung infection model resulting in acute pneumonia could be used for evaluating the protective immunity induced by mucosal vaccines against Vibrio cholerae. In order to gain insight and better understanding of the pathogenicity of V. cholerae infection, we identified and compared proteins induced by V. cholerae in nasal washes, bronchoalveolar lavages (BAL), and sera. Intranasal administration of V. cholerae increased the concentration of total proteins in nasal washes and BAL fluids, but not in sera. LTQ-Orbitrap hybrid Fourier transform mass spectrometry showed that cytoskeletal proteins, protease inhibitors and anti-inflammatory mediators were present in nasal washes from uninfected mice. The distinctly expressed proteins in nasal washes in response to V. cholerae mainly consisted of protease inhibitors, anti-inflammatory proteins, and anti-microbial proteins. A number of protease inhibitors and anti-inflammatory proteins were selectively expressed in BAL fluids from V. cholerae-infected mice, while cytoskeletal proteins and heat shock proteins were mainly observed in BAL fluids from uninfected mice. A large number of serum complements, protease inhibitors, and acute phase proteins were expressed in V. cholerae-infected mice. Collectively, these results suggest that intranasal administration of V. cholerae leading to acute pneumonia elicited alterations of protein profiles associated with immune homeostasis and host protection in both the mucosal and systemic compartments.
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Affiliation(s)
- Seok-Seong Kang
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 110-749, Republic of Korea
| | - Jung Eun Baik
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 110-749, Republic of Korea
| | - Jae Seung Yang
- Clinical Immunology Section, Laboratory Sciences Division, International Vaccine Institute, Seoul 151-919, Republic of Korea
| | - Kun Cho
- Division of Mass Spectrometry Research, Korea Basic Science Institute, Ochang 863-883, Republic of Korea
| | - Cheol-Heui Yun
- Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Republic of Korea
| | - Seung Hyun Han
- Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul 110-749, Republic of Korea.
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Abstract
OBJECTIVE To investigate the associations between plasma levels of pentraxins 3 (PTX3) and C reactive protein (CRP) and the severity of coronary artery lesions. DESIGN AND METHODS 60 patients with coronary heart disease (CHD) who underwent coronary angiography (CAG) in our hospital were included. Plasma was collected during CAG. The coronary Gensini score was used to evaluate the severity of coronary artery lesions. Associations between Gensini scores and plasma levels of PTX3 and CRP were analysed. Patients with estimated glomerular filtration rate <60 mL/min/1.73 m(2) were included in the chronic renal dysfunction subgroup. RESULTS A linear correlation was observed between PTX3 and the Gensini score (r=0.513, p<0.001). One-way analysis of variance showed that PTX3 levels were significantly higher in patients with Gensini scores >90 compared with patients with scores of 46-90 or <45 (0-45:4.8±0.8, 46-90:6.7±1.2, >90:7.7±2.0, p<0.001). Stepwise multiple linear regression showed that PTX3 levels were significantly associated with Gensini score in patients with chronic renal dysfunction (p=0.012), while no significant association was found for CRP. CONCLUSIONS PTX3 levers were positively associated with the severity of coronary artery lesions. PTX3 is closely associated with the severity of coronary artery stenosis in patients with chronic renal dysfunction.
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Affiliation(s)
- Hua Liu
- Department of Cardiology, Shanghai Chest Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Shaofeng Guan
- Department of Cardiology, Shanghai Chest Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Weiyi Fang
- Department of Cardiology, Shanghai Chest Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Fang Yuan
- Department of Cardiology, Shanghai Chest Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Min Zhang
- Department of Cardiology, Shanghai Chest Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
| | - Xinkai Qu
- Department of Cardiology, Shanghai Chest Hospital, Affiliated to Shanghai Jiao Tong University, Shanghai, China
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Serum C-reactive protein and CRP genotype in pediatric inflammatory bowel disease: influence on phenotype, natural history, and response to therapy. Inflamm Bowel Dis 2015; 21:596-605. [PMID: 25636121 DOI: 10.1097/mib.0000000000000296] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND C-reactive protein (CRP) is an acute phase reactant. Patients with pediatric inflammatory bowel disease (PIBD) differ from adult patients with inflammatory bowel disease with regard to phenotype, inflammatory profile, and treatment response. We hypothesized that variations in CRP and CRP genotype influence PIBD phenotype, natural history, and remission after anti-tumor necrosis factor alpha therapy. METHODS Six single nucleotide polymorphisms tagging CRP (rs1935193, rs1130864, rs1205, rs1417938, rs11265263, and rs1800947) were genotyped in 465 patients with PIBD (diagnosed <17 yr). Phenotyping was serially performed until last follow-up and serum CRP levels recorded at diagnosis and before biological therapy in a subgroup. RESULTS CRP haplotype (ATGCTC) differed in those diagnosed <10 years, with rs1205T more frequent in Crohn's disease (CD) than ulcerative colitis (UC) (P = 0.009); the haplotype ATGCTC was less frequent in UC (P = 0.002). Three single nucleotide polymorphisms (rs1205, rs1130864, and rs1417938) showed association with elevated CRP levels at diagnosis. CRP genotype had no association with CD phenotype or natural history. CRP was more frequently raised at diagnosis in CD than UC (63% versus 22%, P < 0.0001). Elevated CRP at diagnosis was associated with a higher risk of progression to surgery in patients with CD (P < 0.0001) and the need for azathioprine in the overall PIBD cohort (P = 0.002). There was no effect of CRP genotype or serum CRP on the achievement of remission using anti-tumor necrosis factor alpha therapy. CONCLUSIONS CRP and CRP genotype differ between pediatric patients with CD and UC with a high inflammatory burden at diagnosis suggesting a worse prognosis. Additional evaluation of CRP in inflammatory bowel disease pathogenesis and natural history is now warranted.
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Liu XH, Li Q, Zhang P, Su Y, Zhang XR, Sun Q. Serum mannose-binding lectin and C-reactive protein are potential biomarkers for patients with community-acquired pneumonia. Genet Test Mol Biomarkers 2014; 18:630-5. [PMID: 25019352 DOI: 10.1089/gtmb.2014.0038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIM The aim of this study was to identify whether mannose-binding lectin (MBL) and C-reactive protein (CRP) may be used as clinical biomarkers for predicting outcome of community-acquired pneumonia (CAP) by tracking serum MBL and CRP level changes during a time course. METHODS One hundred four patients with CAP and 100 healthy individuals were enrolled in this study. The patients were further divided into Survivor and Death groups based on 30-day mortality. The MBL and CRP levels in these patients at pre- and post-treatments at days 4 and 7 were determined using an immunoturbidimetric assay and an enzyme-linked immunosorbent assay (ELISA). RESULTS Compared to the control group, the MBL and CRP levels in the CAP group were significantly higher. CRP levels in the CAP group significantly reduced within 1 week following anti-infection and other supporting therapies including anti-phlegm and liquidation. MBL levels were significantly higher in the Survivor group than in the Death group (p<0.05). On the contrary, CRP levels were significantly higher in the Death group than in the Survivor group (p<0.05). There was a negative correlation between the serum MBL and CRP levels in all patients following the treatments. CONCLUSION Both the MBL and CRP can serve as inflammatory markers in predicting the outcome of patients with CAP.
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Affiliation(s)
- Xue-Hua Liu
- Department of Intensive Care Unit, TianJin People's Hospital , TianJin, China
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Association of plasma C-reactive protein levels with the diagnosis of Alzheimer's disease. J Neurol Sci 2013; 333:9-12. [PMID: 23978419 DOI: 10.1016/j.jns.2013.05.028] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 05/19/2013] [Accepted: 05/23/2013] [Indexed: 11/24/2022]
Abstract
C-reactive protein (CRP) participates in the systemic response to inflammation. Previous studies report inconsistent findings regarding the relationship between plasma CRP and Alzheimer's disease (AD). We measured plasma CRP in 203 subjects with AD, 58 subjects with mild cognitive impairment (MCI) and 117 normal aging subjects and administered annual Mini-Mental State Examinations (MMSE) during a 3-year follow-up period to investigate CRP's relationship with diagnosis and progression of cognitive decline. Adjusted for age, sex, and education, subjects with AD had significantly lower levels of plasma CRP than subjects with MCI and normal aging. However, there was no significant association between plasma CRP at baseline and subsequent cognitive decline as assessed by longitudinal changes in MMSE score. Our results support previous reports of reduced levels of plasma CRP in AD and indicate its potential utility as a biomarker for the diagnosis of AD.
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Abrams ST, Zhang N, Dart C, Wang SS, Thachil J, Guan Y, Wang G, Toh CH. Human CRP defends against the toxicity of circulating histones. THE JOURNAL OF IMMUNOLOGY 2013; 191:2495-502. [PMID: 23894199 DOI: 10.4049/jimmunol.1203181] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
C-reactive protein (CRP) is an acute-phase protein that plays an important defensive role in innate immunity against bacterial infection, but it is also upregulated in many noninfectious diseases. The generic function of this highly conserved molecule in diseases that range from infection, inflammation, trauma, and malignancy is not well understood. In this article, we demonstrate that CRP defends the human body against the toxicity of histones released into the circulation after extensive cell death. In vitro, CRP significantly alleviates histone-induced endothelial cell damage, permeability increase, and platelet aggregation. In vivo, CRP rescues mice challenged with lethal doses of histones by inhibiting endothelial damage, vascular permeability, and coagulation activation, as reflected by significant reductions in lung edema, hemorrhage, and thrombosis. In patients, elevation of CRP significantly increases the capacity to neutralize extracellular histones in the circulation. We have also confirmed that CRP interacts with individual histones in vitro and forms CRP-histone complexes in serum from patients with both elevated CRP and histones. CRP is able to compete with phospholipid-containing liposomes for the binding to histones. This explains how CRP prevents histones from integrating into cell membranes, which would otherwise induce calcium influx as the major mechanism of cytotoxicity caused by extracellular histones. Because histone elevation occurs in the acute phase of numerous critical illnesses associated with extensive cell death, CRP detoxification of circulating histones would be a generic host defense mechanism in humans.
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Affiliation(s)
- Simon T Abrams
- Department of Blood Sciences, Royal Liverpool and Broadgreen University Hospitals National Health Service Trust, Liverpool L7 8XP, United Kingdom
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Belderbos ME, Levy O, Meyaard L, Bont L. Plasma-mediated immune suppression: a neonatal perspective. Pediatr Allergy Immunol 2013; 24:102-13. [PMID: 23173652 DOI: 10.1111/pai.12023] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/04/2012] [Indexed: 01/31/2023]
Abstract
Plasma is a rich mixture of immune regulatory factors that shape immune cell function. This immunomodulatory role of plasma is especially important in neonates. To maintain in utero feto-maternal tolerance and to allow for microbial colonization after birth, the neonatal immune system is biased against pro-inflammatory responses while favoring immune suppression. Therefore, the neonatal period provides a unique opportunity to study the physiologic mechanisms regulating the immune system. Several recent studies in neonates have identified plasma factors that play a key role in immune regulation. Insight into immune regulation by neonatal and adult plasma may have clinical implications, because plasma is easily accessible, affordable, and widely available. Herein, we review plasma-mediated immune regulation, with specific focus on neonatal plasma. We discuss how immune suppression is a key function of plasma and provide a systematic overview of the published literature regarding plasma-derived immune suppressive proteins, lipids, purines, and sugars. Finally, we outline how immune regulation by these factors, which are particularly abundant in neonatal plasma, may eventually be used to treat immune-mediated diseases, such as autoimmune, allergic, and inflammatory diseases.
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Association study of CRP gene in systemic sclerosis in European Caucasian population. Rheumatol Int 2013; 34:389-92. [PMID: 23397258 DOI: 10.1007/s00296-013-2673-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 01/08/2013] [Indexed: 10/27/2022]
Abstract
Opsonization and apoptotic cell elements are critical in systemic lupus erythematosus (SLE) and could act through the activation of the innate immunity. C-reactive protein (CRP) belongs to opsonins, and polymorphisms of CRP gene have been shown to be associated with SLE susceptibility. Accumulating evidences show that SLE and systemic sclerosis (SSc) share some genetic susceptibility factors. To determine whether polymorphisms of CRP confer susceptibility to SSc, four SNPs (rs1130864, rs1205, rs1800947 and rs1341665), chosen using Hapmap linkage disequilibrium data and published data, were genotyped in a cohort of 651 SSc patients (569 with antinuclear antibodies, 258 with anti-centromere and 153 with anti-topoisomerase I) and 442 controls. All individuals were of French Caucasian origin. The four polymorphisms were in Hardy-Weinberg equilibrium in the control population. Allelic and genotypic frequencies for these four polymorphisms were found to be similar in SSc patients and controls. Moreover, subphenotype analyses in particular for subgroups having antinuclear antibodies did not detect any difference between SSc patients and controls. These results obtained through a large cohort of European Caucasian SSc patients do not support the implication of CRP gene in the pathogenesis of SSc.
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Liou LB, Tsai WP, Chang CJ, Chao WJ, Chen MH. Blood monocyte chemotactic protein-1 (MCP-1) and adapted disease activity Score28-MCP-1: favorable indicators for rheumatoid arthritis activity. PLoS One 2013; 8:e55346. [PMID: 23383162 PMCID: PMC3559534 DOI: 10.1371/journal.pone.0055346] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2012] [Accepted: 12/21/2012] [Indexed: 02/02/2023] Open
Abstract
OBJECTIVE We assessed blood pentraxin 3 (PTX3) and macrophage chemotactic factor-1 (MCP-1) levels as indicators of disease activity in rheumatoid arthritis (RA) patients, because data on disease activity score 28 (DAS28)-erythrocyte sedimentation rate (ESR) and DAS28-C-reactive protein (CRP) are still imperfect. METHODS In 111 patients with RA, we examined longitudinal and cross-sectional correlations of blood PTX3, MCP-1, CRP, and ESR levels with measures of clinical arthritic activity, namely, swollen joint count (SJC), tender joint count (TJC), visual analog scale for general health (GH), DAS28, and adapted DAS28-MCP-1. RESULTS Blood MCP-1, but not PTX3, was significantly correlated with SJC, TJC, DAS28, and DAS28-CRP. DAS28-MCP-1 was strongly correlated with DAS28 (r = 0.984, P<0.001) and DAS28-CRP (r = 0.971, P<0.001), and modestly correlated with CRP (r = 0.350, P<0.001), and ESR (r = 0.386, P<0.001). Similarly, the duration of arthritic symptoms, but not sex, was significantly correlated with variables of arthritic activity. In particular, DAS28-MCP-1 significantly correlated with DAS28 during a 6-month period (r = 0.944, P<0.001; r = 0.951, P<0.001; r = 0.862, P<0.001; and r = 0.865, P<0.001 for month 0, 1, 3, and 6, respectively). CONCLUSION Blood MCP-1 and adapted DAS28-MCP-1, but not blood PTX3, may be useful in monitoring RA activity.
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Affiliation(s)
- Lieh-bang Liou
- Department of Rheumatology, Allergy and Immunology, Chang Gung Memorial Hospital at Lin-kou, Kwei-san Hsiang, Tao-yuan County, Taiwan.
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Plasma protein changes in horse after prolonged physical exercise: A proteomic study. J Proteomics 2012; 75:4494-504. [DOI: 10.1016/j.jprot.2012.04.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 03/26/2012] [Accepted: 04/10/2012] [Indexed: 11/19/2022]
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Chiaradia E, Avellini L, Tartaglia M, Gaiti A, Just I, Scoppetta F, Czentnar Z, Pich A. Proteomic evaluation of sheep serum proteins. BMC Vet Res 2012; 8:66. [PMID: 22630135 PMCID: PMC3453506 DOI: 10.1186/1746-6148-8-66] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Accepted: 05/09/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The applications of proteomic strategies to ovine medicine remain limited. The definition of serum proteome may be a good tool to identify useful protein biomarkers for recognising sub-clinical conditions and overt disease in sheep. Findings from bovine species are often directly translated for use in ovine medicine. In order to characterize normal protein patterns and improve knowledge of molecular species-specific characteristics, we generated a two-dimensional reference map of sheep serum. The possible application of this approach was tested by analysing serum protein patterns in ewes with mild broncho-pulmonary disease, which is very common in sheep and in the peripartum period which is a stressful time, with a high incidence of infectious and parasitic diseases. RESULTS This study generated the first reference 2-DE maps of sheep serum. Overall, 250 protein spots were analyzed, and 138 identified.Compared with healthy sheep, serum protein profiles of animals with rhino-tracheo-bronchitis showed a significant decrease in protein spots identified as transthyretin, apolipoprotein A1 and a significant increase in spots identified as haptoglobin, endopin 1b and alpha1B glycoprotein.In the peripartum period, haptoglobin, alpha-1-acid glycoprotein, apolipoprotein A1 levels rose, while transthyretin content dropped. CONCLUSIONS This study describes applications of proteomics in putative biomarker discovery for early diagnosis as well as for monitoring the physiological and metabolic situations critical for ovine welfare.
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Affiliation(s)
- Elisabetta Chiaradia
- Department of Pathologic, Diagnostic, and Clinical Veterinary Medicine, University of Perugia, Perugia, Italy.
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Su GL, Fontana RJ, Jinjuvadia K, Bayliss J, Wang SC. Lipopolysaccharide binding protein is down-regulated during acute liver failure. Dig Dis Sci 2012; 57:918-24. [PMID: 22278340 PMCID: PMC3500613 DOI: 10.1007/s10620-012-2046-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Accepted: 01/05/2012] [Indexed: 01/13/2023]
Abstract
BACKGROUND AND AIMS Lipopolysaccharide binding protein (LBP) is involved in the modulation of acute liver injury and failure caused by acetaminophen (APAP). Although the biological activity of LBP is concentration dependent, little is known about its levels in acute liver failure. METHODS Serum and hepatic LBP were measured in acute APAP-induced liver injury in mice. Serum LBP was measured in patients with acute liver failure from APAP and non-APAP causes. RESULTS Interestingly, contrary to other diseases, serum and hepatic LBP levels decreased significantly in mice within 24 h after being subjected to APAP-induced injury compared to the control (1.6 ± 0.1 vs. 3.5 ± 1.6 μg/ml, respectively; P < 0.05). Similar decreases were noted in another mouse model of acute liver injury due to carbon tetrachloride. Among patients with acute liver failure due to APAP (n = 5) and non-APAP (n = 5) causes, admission LBP levels were decreased compared to those of healthy controls (5.4 ± 1.4 vs. 3.2 ± 0.2 μg/ml, normal vs. acute liver failure; P = 0.07). However, the levels were not associated with the etiology of acute liver failure or 3-week outcome. CONCLUSIONS Serum and hepatic LBP levels are significantly reduced early after the induction of severe acute liver injury/failure due to acetaminophen and other liver injuries. This reduction in LBP production is specific to acute liver failure and may be important in developing future diagnostic and therapeutic approaches for patients with acute liver failure.
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Affiliation(s)
- Grace L Su
- Veterans Administration Ann Arbor Healthcare Systems, Ann Arbor, MI, USA.
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Gardner J, Wu S, Ling L, Danao J, Li Y, Yeh WC, Tian H, Baribault H. G-protein-coupled receptor GPR21 knockout mice display improved glucose tolerance and increased insulin response. Biochem Biophys Res Commun 2012; 418:1-5. [DOI: 10.1016/j.bbrc.2011.11.117] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Accepted: 11/22/2011] [Indexed: 11/27/2022]
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PTX3 Is Located at the Membrane of Late Apoptotic Macrophages and Mediates the Phagocytosis of Macrophages. J Clin Immunol 2011; 32:330-9. [DOI: 10.1007/s10875-011-9615-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Accepted: 11/03/2011] [Indexed: 01/17/2023]
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MBL interferes with endovascular trophoblast invasion in pre-eclampsia. Clin Dev Immunol 2011; 2012:484321. [PMID: 22203857 PMCID: PMC3235499 DOI: 10.1155/2012/484321] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Accepted: 09/07/2011] [Indexed: 02/01/2023]
Abstract
The spiral arteries undergo physiologic changes during pregnancy, and the failure of this process may lead to a spectrum of pregnancy disorders, including pre-eclampsia. Our recent data indicate that decidual endothelial cells (DECs), covering the inner side of the spiral arteries, acquire the ability to synthesize C1q, which acts as a link between endovascular trophoblast and DECs favouring the process of vascular remodelling. In this study, we have shown that sera obtained from pre-eclamptic patients strongly inhibit the interaction between extravillous trophoblast (EVT) and DECs, preventing endovascular invasion of trophoblast cells. We further demonstrated that mannose-binding lectin (MBL), one of the factor increased in pre-eclamptic patient sera, strongly inhibits the interaction of EVT with C1q interfering with the process of EVT adhesion to and migration through DECs. These data suggest that the increased level of MBL in pre-eclampsia may contribute to the failure of the endovascular invasion of trophoblast cells.
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Xu Y, Ding X, Zou J, Liu Z, Jiang S, Xu S, Shen B, Chen Y, Shan Y, Cao X. Plasma Pentraxin 3 is Associated with Cardiovascular Disease in Hemodialysis Patients. Ren Fail 2011; 33:998-1004. [DOI: 10.3109/0886022x.2011.618969] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lakota K, Zigon P, Mrak-Poljsak K, Rozman B, Shoenfeld Y, Sodin-Semrl S. Antibodies against acute phase proteins and their functions in the pathogenesis of disease: A collective profile of 25 different antibodies. Autoimmun Rev 2011; 10:779-89. [DOI: 10.1016/j.autrev.2011.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Accepted: 06/15/2011] [Indexed: 01/09/2023]
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Roumenina LT, Sène D, Radanova M, Blouin J, Halbwachs-Mecarelli L, Dragon-Durey MA, Fridman WH, Fremeaux-Bacchi V. Functional complement C1q abnormality leads to impaired immune complexes and apoptotic cell clearance. THE JOURNAL OF IMMUNOLOGY 2011; 187:4369-73. [PMID: 21930969 DOI: 10.4049/jimmunol.1101749] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
C1q plays a key role in apoptotic cell and immune complex removal. Its absence contributes to the loss of tolerance toward self structures and development of autoimmunity. C1q deficiencies are extremely rare and are associated with complete lack of C1q or with secretion of surrogate C1q fragments. To our knowledge, we report the first case of a functional C1q abnormality, associated with the presence of a normal C1q molecule. Homozygous GlyB63Ser mutation was found in a patient suffering from lupus with neurologic manifestations and multiple infections. The GlyB63Ser C1q bound to Igs, pentraxins, LPSs, and apoptotic cells, similarly to C1q from healthy donors. However, the interaction of C1r(2)C1s(2) and C1 complex formation was abolished, preventing further complement activation and opsonization by C3. The mutation is located between LysB(61) and LysB(65) of C1q, suggested to form the C1r binding site. Our data infer that the binding of C1q to apoptotic cells in humans is insufficient to assure self-tolerance. The opsonization capacity of C4 and C3 fragments has to be intact to fight infections and to prevent autoimmunity.
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Affiliation(s)
- Lubka T Roumenina
- Centre de Recherche des Cordeliers, INSERM Unité Mixte de Recherche en Santé 872, 75006 Paris, France.
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Yaman H, Cakir E, Akgul EO, Aydin I, Onguru O, Cayci T, Kurt YG, Agilli M, Aydin FN, Gulec M, Altinel O, Isbilir S, Ersoz N, Yasar M, Turker T, Bilgi C, Erbil KM. Pentraxin 3 as a potential biomarker of acetaminophen-induced liver injury. ACTA ACUST UNITED AC 2011; 65:147-51. [PMID: 21880472 DOI: 10.1016/j.etp.2011.07.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 06/29/2011] [Accepted: 07/22/2011] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Overdose of acetaminophen (APAP) can lead to severe liver injury in humans and experimental animals. Pentraxin-3 (PTX-3) is produced and released by several cell types. In this study, we aimed to evaluate whether PTX-3 is a potential biomarker in the identification of APAP-induced liver injury. MATERIALS AND METHODS Thirty adult male Wistar rats were randomly divided into three groups: control, APAP-1 and APAP-2 groups. APAP-1 (1 g/kg) and APAP-2 (2 g/kg) group rats were given APAP by gastric tube. Liver tissues and blood samples were obtained for biochemical and histopathological analysis. Biochemical parameters, plasma and liver PTX-3 levels and degree of liver necrosis were measured in all groups. RESULTS APAP treatments caused necrosis in liver and accompanied by elevated liver PTX-3 levels after 48 h. In APAP-1 and APAP-2 groups when compared with control group (7.5±3.3 ng/mg protein), mean liver PTX-3 concentrations were 14.1±3.0 (p=0.032) and 28.5±8.2 (p<0.001) ng/mg protein, respectively. All rats (100%) in the APAP-2 group had the degree 3 liver necrosis. However 10%, 40% and 50% of rats had the degree 1, the degree 2 and the degree 3 liver necrosis in the APAP-1 group, respectively. The degrees of liver necrosis of the APAP-1 and APAP-2 groups were higher than the group of control (p<0.001 and p<0.001, respectively). CONCLUSIONS PTX-3 may have a role in the APAP-induced liver injury in the rats. The elevated liver PTX-3 in the APAP-induced hepatic necrosis might be a marker of acute histological liver damage. Further prospective studies are necessary to clarify the prognostic value of liver PTX-3 for prediction of histological hepatic necrosis in the APAP-induced liver injury.
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Affiliation(s)
- Halil Yaman
- Department of Medical Biochemistry, Gulhane Military Medical Academy, Etlik-06018 Ankara, Turkey.
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Enkhmaa B, Anuurad E, Ozturk Z, Zhang W, Pearson TA, Berglund L. Differential associations of serum amyloid A and pentraxin-3 with allele-specific lipoprotein(a) levels in African Americans and Caucasians. Transl Res 2011; 158:92-8. [PMID: 21757153 PMCID: PMC3137802 DOI: 10.1016/j.trsl.2011.01.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 01/05/2011] [Accepted: 01/07/2011] [Indexed: 11/28/2022]
Abstract
Lipoprotein(a) [Lp(a)] is a cardiovascular disease (CVD) risk factor, where inflammation impacts levels differentially across ethnicity. We investigated the effect of systemic [serum amyloid A (SAA)] and vascular [pentraxin-3 (PTX-3)] inflammation on Lp(a) levels across different apolipoprotein(a) [apo(a)] sizes in a biethnic population. Lp(a) and allele-specific apo(a) levels, apo(a) sizes, SAA, and PTX-3 levels were determined in 336 Caucasians and 224 African Americans. We dichotomized subjects into 2 groups using the respective median SAA (29.8 and 41.5 mg/dL for Caucasians and African Americans, respectively) or PTX-3 levels (1.6 and 1.1 ng/mL for Caucasians and African Americans, respectively). Among African Americans, but not in Caucasians, Lp(a) levels were increased (146 vs 117 nmol/L, P = 0.024) in the high versus low SAA group. No difference was observed across PTX-3 groups. Furthermore, among African Americans with smaller (<26 K4 repeats) apo(a) sizes, allele-specific apo(a) levels (111 vs 79 nmol/L, P = 0.020) were increased in the high versus low SAA group. Again, no difference was observed for PTX-3. We did not find any significant associations between allele-specific apo(a) and SAA or PTX-3 levels among Caucasians with smaller (<26 K4) apo(a) sizes. In conclusion, increased levels of SAA, but not PTX-3, were associated significantly with higher Lp(a) levels for smaller (<26 K4) apo(a) sizes in African Americans. Our results implicate that a proinflammatory stimulus may result in an increased cardiovascular risk through a selective increase in Lp(a) levels among African Americans who carry a smaller apo(a) size.
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Affiliation(s)
- Byambaa Enkhmaa
- Department of Medicine, University of California, Davis, CA 95817, USA
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