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Xu S, Han S, Dai Y, Wang L, Zhang X, Ding Y. A Review of the Mechanism of Vascular Endothelial Injury in Immunoglobulin A Vasculitis. Front Physiol 2022; 13:833954. [PMID: 35370802 PMCID: PMC8966136 DOI: 10.3389/fphys.2022.833954] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/12/2022] [Indexed: 12/14/2022] Open
Abstract
Immunoglobulin A (IgA) vasculitis (IgAV), also known as Henoch-Schönlein purpura, is the most common form of childhood vasculitis. It is characterized by cutaneous hemorrhage, resulting from red blood cell leakage into the skin or mucosae, possibly caused by damage to small blood vessels. These acute symptoms usually disappear without treatment. Endothelial cells are distributed on the inner surfaces of blood vessels and lymphatic vessels, and have important functions in metabolism and endocrine function, as well as being the primary targets of external stimuli and endogenous immune activity. Injury to endothelial cells is a feature of IgA vasculitis. Endothelial cell damage may be related to the deposition of immune complexes, the activation of complement, inflammatory factors, and chemokines, oxidative stress, hemodynamics, and coagulation factors. Both epigenetic mechanisms and genetic diversity provide a genetic background for endothelial cell injury. Here, research on the role of endothelial cells in allergic IgA vasculitis is reviewed.
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Affiliation(s)
- Shanshan Xu
- Pediatric Kidney Disease Center, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Shanshan Han
- Pediatric Kidney Disease Center, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Yanlin Dai
- Pediatric Kidney Disease Center, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Long Wang
- Pediatric Kidney Disease Center, Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Xia Zhang
- Pediatric Kidney Disease Center, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China
| | - Ying Ding
- Pediatric Kidney Disease Center, Henan University of Traditional Chinese Medicine, Zhengzhou, China
- *Correspondence: Ying Ding,
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Zhu Y, Dong Y, Wu L, Deng F. Changes of inflammatory mediators and oxidative stress indicators in children with Henoch-Schönlein purpura and clinical effects of hemoperfusion in the treatment of severe Henoch-Schönlein purpura with gastrointestinal involvement in children. BMC Pediatr 2019; 19:409. [PMID: 31684904 PMCID: PMC6827241 DOI: 10.1186/s12887-019-1802-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/24/2019] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND To explore the changes of inflammatory and oxidative stress responses in Henoch-Schönlein purpura (HSP) children, and further analyzed the therapeutic effects and mechanisms of hemoperfusion (HP) on HSP with severe gastrointestinal (GI) involvement. METHODS There were 200 children with HSP were divided into three groups according to their clinical manifestations: 60 in HSP without GI and renal involvement group, 60 in HSP with GI involvement group, and 80 in HSPN group. The HSP with GI involvement group was subdivided into conventional treatment (n = 30) and HP (n = 30) groups. Thirty children who visited the department of children healthcare for healthy physical examinations from January to December 2017 were set as healthy control group. The IL-6 and TNF-α levels were detected by chemoluminescence method. The MDA, SOD and T-AOC levels were determined by thiobarbituric acid colorimetric method, hydroxylamine method and chemical colorimetry. RESULTS Compared with healthy group, IL-6, TNF-α and MDA levels in HSP were increased in each group, while SOD and T-AOC were decreased (P = 0.000). IL-6, TNF-α and MDA levels in the HSPN group were the highest, SOD and T-AOC levels were the lowest (P = 0.000). Compared with those before treatment, IL-6, TNF-α and MDA levels in the conventional and HP groups were decreased and SOD and T-AOC levels were increased (P = 0.000). The changes in HP group were more significant than those in conventional group (P < 0.047). Compared with conventional group, glucocorticoid dosage and the occurrence rate of hematuria and/or proteinuria within 3 months were lower in HP group. (P = 0.000, 0.004). CONCLUSIONS Inflammatory and oxidative stress may be involved in the acute phase of HSP children. The intensity of inflammatory and oxidative stress responses were related to the degree of renal involvement. HP can reduce glucocorticoid dosage and the rate of renal involvement in children with severe HSP with GI involvement. The mechanism may be related to the fact that HP can effectively remove IL-6, TNF-α, MDA in HSP children.
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Affiliation(s)
- Ying Zhu
- Department of Nephrology, Anhui Provincial Children’s Hospital, No. 39 Wangjiang East Road, Hefei, 230051 China
| | - Yang Dong
- Department of Nephrology, Anhui Provincial Children’s Hospital, No. 39 Wangjiang East Road, Hefei, 230051 China
| | - Lin Wu
- Department of Nephrology, Anhui Provincial Children’s Hospital, No. 39 Wangjiang East Road, Hefei, 230051 China
| | - Fang Deng
- Department of Pediatrics, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022 China
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Chen T, Fu LX, Guo ZP, Cao N, Zhou PM. Elevated serum interleukin-29 levels in patients with Henoch-Schönlein purpura. Australas J Dermatol 2019; 60:e82-e85. [PMID: 29938771 DOI: 10.1111/ajd.12878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Tao Chen
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, Sichuan, China
| | - Li-Xin Fu
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, Sichuan, China
| | - Zai-Pei Guo
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Na Cao
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, Sichuan, China
| | - Pei-Mei Zhou
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, Sichuan, China
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Zhang T, Yin Y, Ji X, Zhang B, Wu S, Wu X, Li H, Li Y, Ma Y, Wang Y, Li H, Zhang B, Wu D. Retracted
: AT1R knockdown confers cardioprotection against sepsis‐induced myocardial injury by inhibiting the MAPK signaling pathway in rats. J Cell Biochem 2018; 121:25-42. [DOI: 10.1002/jcb.27445] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 07/16/2018] [Indexed: 02/04/2023]
Affiliation(s)
- Tao Zhang
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Yu‐Chao Yin
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Xiang Ji
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Bo Zhang
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Sheng Wu
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Xiao‐Zhe Wu
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Hong Li
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Ya‐Dan Li
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Ya‐Ling Ma
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Yu Wang
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
| | - Hai‐Tao Li
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
- Department of Neurosurgery Tianjin Huanhu Hospital Tianjin China
| | - Bin Zhang
- Department of Orthopedic Tianjin Medical University General Hospital Tianjin China
| | - Di Wu
- Intensive Care Unit Tianjin Huanhu Hospital Tianjin China
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases Tianjin China
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[Clinical effect and mechanism of hemoperfusion in treatment of children with severe abdominal Henoch-Schönlein purpura]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2018. [PMID: 29764574 PMCID: PMC7389066 DOI: 10.7499/j.issn.1008-8830.2018.05.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
OBJECTIVE To study the clinical effect and mechanism of hemoperfusion (HP) in the treatment of children with severe abdominal Henoch-Schönlein purpura (HSP). METHODS A total of 24 children with severe abdominal HSP were divided into two groups: conventional treatment and HP (n=12 each). Ten healthy children who underwent physical examination were enrolled as the control group. Before and after treatment, chemiluminescence was used to measure the serum levels of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α); thiobarbituric acid colorimetry was used to measure the plasma level of malondialdehyde (MDA); the hydroxylamine method was used to measure the plasma level of superoxide dismutase (SOD); chemical colorimetry was used to measure the plasma level of total anti-oxidant capability (T-AOC). RESULTS Compared with the control group, the conventional treatment and HP groups had significantly higher IL-6, TNF-α, and MDA levels and significantly lower SOD and T-AOC levels before treatment (P<0.05), but there were no significant differences between the conventional treatment and HP groups (P>0.05). After treatment, the conventional treatment and HP groups had significant reductions in IL-6, TNF-α, and MDA levels and significant increases in SOD and T-AOC levels (P<0.05). The HP group had significantly greater changes than the conventional treatment group; however, there were still significant differences in these indices between the HP and control groups (P<0.05). Compared with the HP group, the conventional treatment group had a significantly lower percentage of children with disappearance of digestive tract symptoms at 4 days after treatment and significantly longer time to disappearance of rash and digestive tract symptoms (P<0.05). Compared with the conventional treatment group, the HP group had a significantly lower amount of glucocorticoid used during treatment and a significantly lower percentage of children who experienced hematuria and/or proteinuria within 6 months of the disease course (P<0.05). There were no significant differences between the two groups in length of hospital stay and recurrence rates of rash and abdominal pain within 6 months of the disease course. CONCLUSIONS HP can reduce the amount of glucocorticoid used during treatment and the incidence rate of kidney injury in children with severe abdominal HSP, possibly by eliminating IL-6, TNF-α, and MDA.
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Chen T, Guo ZP, Wang WJ, Qin S, Cao N, Li MM. Increased serum HMGB1 levels in patients with Henoch-Schönlein purpura. Exp Dermatol 2015; 23:419-23. [PMID: 24758390 DOI: 10.1111/exd.12422] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2014] [Indexed: 02/05/2023]
Abstract
High-mobility group box-1 (HMGB1) has been implicated as a pro-inflammatory cytokine in the pathogenesis of various inflammatory and autoimmune diseases. However, information about HMGB1 in Henoch-Schönlein purpura (HSP) is still unclear. Herein, we investigated the role of HMGB1 in patients with HSP and the pro-inflammatory effects of HMGB1 on human dermal microvascular endothelial cell line (HMEC-1). Serum HMGB1 levels in patients with HSP together with patients with allergic vasculitis (AV) and urticarial vasculitis (UV) were detected by enzyme-linked immunosorbent assay (ELISA). HMEC-1 cells were treated with HMGB1 at concentrations ranging from 4 ng/ml to 100 ng/ml. Serum HMGB1 levels were significantly increased in patients with HSP, AV and UV, when compared with those in control group. Moreover, abundant cytoplasmic expression of HMGB1 was observed in endothelial cells in lesional skin of HSP patients. Using membrane cytokine antibody array, we indicate that HMGB1 markedly induced TNF-α and IL-6 release in cultured supernatant. Furthermore, by real-time quantitative PCR and ELISA, the effects of HMGB1 on these cytokines production in HMEC-1 cells were established. Finally, Western blot data revealed that HMGB1 can induce phosphorylation of inhibitor of κB-α (IκBα) and the nuclear translocation of nuclear factor-κB (NF-κB) p65 in HMEC-1 cells. In conclusion, this study provides first observations on the association of HMGB1 with HSP. We suggest that HMGB1 may be an important mediator of endothelial inflammation through the induction of TNF-α and IL-6 production and may play a crucial role in the pathogenesis of HSP.
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Affiliation(s)
- Tao Chen
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China; Department of Dermatovenereology, Chengdu second people's hospital, Chengdu, Sichuan, China
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Cao N, Chen T, Guo ZP, Li MM, Jiao XY. Elevated serum levels of visfatin in patients with henoch-schönlein purpura. Ann Dermatol 2014; 26:303-7. [PMID: 24966628 PMCID: PMC4069639 DOI: 10.5021/ad.2014.26.3.303] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 04/03/2013] [Accepted: 05/31/2013] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Henoch-Schönlein purpura (HSP) is an immune complex-mediated disease predominantly characterized by the deposition of circulating immune complexes containing immunoglobulin A (IgA) on the walls of small vessels. Although the pathogenesis of HSP is not yet fully understood, some researchers proposed that B-cell activation might play a critical role in the development of this disease. OBJECTIVE To investigate the serum levels of visfatin (pre-B-cell colony-enhancing factor), B-cell-activating factor (BAFF), and CXCL13, and to analyze their association with disease severity. METHODS The serum levels of visfatin, BAFF, and CXCL13 were measured by using a double-antibody sandwich enzyme-linked immunosorbent assay (ELISA) in 43 patients with HSP and 45 controls. The serum levels of IgA anticardiolipin antibodies (ACA) were detected by using a double-antigen sandwich ELISA. RESULTS Levels of visfatin but not BAFF and CXCL13 were significantly elevated in the sera of patients with HSP in the acute stage, and restored to normal levels in the convalescent stage. Furthermore, serum levels of visfatin were significantly higher in patients with HSP having renal involvement than in those without renal involvement. Serum levels of visfatin were correlated with the severity of HSP and serum concentration of ACA-IgA. CONCLUSION We show for the first time that the serum levels of visfatin are abnormally elevated in patients with HSP. Visfatin may be associated with the pathogenesis of HSP.
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Affiliation(s)
- Na Cao
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Tao Chen
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Zai-Pei Guo
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Meng-Meng Li
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Xiao-Yan Jiao
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
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8
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Increased serum levels of soluble vascular endothelial-cadherin in patients with systemic vasculitis. Rheumatol Int 2014; 34:1139-43. [DOI: 10.1007/s00296-014-2949-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 01/16/2014] [Indexed: 10/25/2022]
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9
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Chen T, Guo ZP, Li L, Li MM, Wang TT, Jia RZ, Cao N, Li JY. TWEAK enhances E-selectin and ICAM-1 expression, and may contribute to the development of cutaneous vasculitis. PLoS One 2013; 8:e56830. [PMID: 23457623 PMCID: PMC3574067 DOI: 10.1371/journal.pone.0056830] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 01/15/2013] [Indexed: 02/05/2023] Open
Abstract
Our previous work indicated that TWEAK is associated with various types of cutaneous vasculitis (CV). Herein, we investigate the effects of TWEAK on vascular injury and adhesion molecule expression in CV mice. We showed that TWEAK priming in mice induced a local CV. Furthermore, TWEAK priming also increased the extravasation of FITC-BSA, myeloperoxidase activity and the expression of E-selectin and ICAM-1. Conversely, TWEAK blockade ameliorated the LPS-induced vascular damage, leukocyte infiltrates and adhesion molecules expression in LPS-induced CV. In addition, TWEAK treatment of HDMECs up-regulated E-selectin and ICAM-1 expression at both mRNA and protein levels. TWEAK also enhanced the adhesion of PMNs to HDMECs. Finally, western blot data revealed that TWEAK can induce phosphorylation of p38, JNK and ERK in HDMECs. These data suggest that TWEAK acted as an inducer of E-selectin and ICAM-1 expression in CV mice and HDMECs, may contribute to the development of CV.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Cell Adhesion/drug effects
- Cytokine TWEAK
- E-Selectin/genetics
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Enzyme Activation/drug effects
- Gene Expression Regulation/drug effects
- Humans
- Intercellular Adhesion Molecule-1/genetics
- Intracellular Space/drug effects
- Intracellular Space/metabolism
- Leukocytes/cytology
- Leukocytes/drug effects
- Lipopolysaccharides/pharmacology
- Male
- Mice
- Mice, Inbred BALB C
- Peroxidase/metabolism
- Reactive Oxygen Species/metabolism
- Receptors, Tumor Necrosis Factor/blood
- TWEAK Receptor
- Tumor Necrosis Factors/blood
- Tumor Necrosis Factors/immunology
- Tumor Necrosis Factors/metabolism
- Tumor Necrosis Factors/pharmacology
- Up-Regulation/drug effects
- Vasculitis, Leukocytoclastic, Cutaneous/chemically induced
- Vasculitis, Leukocytoclastic, Cutaneous/genetics
- Vasculitis, Leukocytoclastic, Cutaneous/metabolism
- Vasculitis, Leukocytoclastic, Cutaneous/pathology
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Affiliation(s)
- Tao Chen
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Zai-pei Guo
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- * E-mail: .
| | - Li Li
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Meng-meng Li
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Ting-ting Wang
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Rui-zhen Jia
- Open Laboratory, West China Second Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Na Cao
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Jing-yi Li
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
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Chen T, Jia RZ, Guo ZP, Cao N, Li MM, Jiao XY. Elevated serum interleukin-33 levels in patients with Henoch-Schönlein purpura. Arch Dermatol Res 2012; 305:173-7. [DOI: 10.1007/s00403-012-1268-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Revised: 07/13/2012] [Accepted: 07/16/2012] [Indexed: 11/24/2022]
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Luz NF, Andrade BB, Feijó DF, Araújo-Santos T, Carvalho GQ, Andrade D, Abánades DR, Melo EV, Silva AM, Brodskyn CI, Barral-Netto M, Barral A, Soares RP, Almeida RP, Bozza MT, Borges VM. Heme oxygenase-1 promotes the persistence of Leishmania chagasi infection. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2012; 188:4460-7. [PMID: 22461696 PMCID: PMC3331931 DOI: 10.4049/jimmunol.1103072] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Visceral leishmaniasis (VL) remains a major public health problem worldwide. This disease is highly associated with chronic inflammation and a lack of the cellular immune responses against Leishmania. It is important to identify major factors driving the successful establishment of the Leishmania infection to develop better tools for the disease control. Heme oxygenase-1 (HO-1) is a key enzyme triggered by cellular stress, and its role in VL has not been investigated. In this study, we evaluated the role of HO-1 in the infection by Leishmania infantum chagasi, the causative agent of VL cases in Brazil. We found that L. chagasi infection or lipophosphoglycan isolated from promastigotes triggered HO-1 production by murine macrophages. Interestingly, cobalt protoporphyrin IX, an HO-1 inductor, increased the parasite burden in both mouse and human-derived macrophages. Upon L. chagasi infection, macrophages from Hmox1 knockout mice presented significantly lower parasite loads when compared with those from wild-type mice. Furthermore, upregulation of HO-1 by cobalt protoporphyrin IX diminished the production of TNF-α and reactive oxygen species by infected murine macrophages and increased Cu/Zn superoxide dismutase expression in human monocytes. Finally, patients with VL presented higher systemic concentrations of HO-1 than healthy individuals, and this increase of HO-1 was reduced after antileishmanial treatment, suggesting that HO-1 is associated with disease susceptibility. Our data argue that HO-1 has a critical role in the L. chagasi infection and is strongly associated with the inflammatory imbalance during VL. Manipulation of HO-1 pathways during VL could serve as an adjunctive therapeutic approach.
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MESH Headings
- Animals
- Brazil
- Gene Expression Regulation, Enzymologic/drug effects
- Gene Expression Regulation, Enzymologic/genetics
- Gene Expression Regulation, Enzymologic/immunology
- Glycosphingolipids/immunology
- Glycosphingolipids/metabolism
- Glycosphingolipids/pharmacology
- Heme Oxygenase-1/biosynthesis
- Heme Oxygenase-1/genetics
- Heme Oxygenase-1/immunology
- Humans
- Leishmania/immunology
- Leishmania/metabolism
- Leishmaniasis, Visceral/enzymology
- Leishmaniasis, Visceral/genetics
- Leishmaniasis, Visceral/immunology
- Leishmaniasis, Visceral/pathology
- Macrophages, Peritoneal/enzymology
- Macrophages, Peritoneal/immunology
- Macrophages, Peritoneal/parasitology
- Macrophages, Peritoneal/pathology
- Membrane Proteins/biosynthesis
- Membrane Proteins/genetics
- Membrane Proteins/immunology
- Mice
- Mice, Inbred BALB C
- Mice, Knockout
- Mice, SCID
- Photosensitizing Agents/pharmacology
- Protoporphyrins/pharmacology
- Up-Regulation/drug effects
- Up-Regulation/genetics
- Up-Regulation/immunology
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Affiliation(s)
- Nívea F Luz
- Centro de Pesquisas Gonçalo Moniz/Fundação Oswaldo Cruz, Salvador 40295-001, Brazil
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12
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Association between the haptoglobin and heme oxygenase 1 genetic profiles and soluble CD163 in susceptibility to and severity of human malaria. Infect Immun 2012; 80:1445-54. [PMID: 22290142 DOI: 10.1128/iai.05933-11] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Intravascular hemolysis is a hallmark event in the immunopathology of malaria that results in increased systemic concentrations of free hemoglobin (Hb). The oxidation of Hb by free radicals causes the release of heme, which amplifies inflammation. To circumvent the detrimental effects of free heme, hosts have developed several homeostatic mechanisms, including the enzyme haptoglobin (Hp), which scavenges cell-free Hb, the monocyte receptor CD163, which binds to Hb-Hp complexes, and heme oxygenase-1 (HO-1), which degrades intracellular free heme. We tested the association between these three main components of the host response to hemolysis and susceptibility to malaria in a Brazilian population. The genetic profiles of the HMOX1 and Hp genes and the plasma levels of a serum inflammatory marker, the soluble form of the CD163 receptor (sCD163), were studied in 264 subjects, including 78 individuals with symptomatic malaria, 106 individuals with asymptomatic malaria, and 80 uninfected individuals. We found that long (GT)n repeats in the microsatellite polymorphism region of the HMOX1 gene, the Hp2 allele, and the Hp2.2 genotype were associated with symptomatic malaria. Moreover, increased plasma concentrations of heme, Hp, HO-1, and sCD163 were associated with susceptibility to malaria. The validation of these results could support the development of targeted therapies and aid in reducing the severity of malaria.
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Chen T, Guo ZP, Jiao XY, Zhang YH, Li JY, Liu HJ. Protective effects of peoniflorin against hydrogen peroxide-induced oxidative stress in human umbilical vein endothelial cells. Can J Physiol Pharmacol 2011; 89:445-53. [PMID: 21777057 DOI: 10.1139/y11-034] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Peoniflorin (PF), extracted from the root of Paeonia lactiflora Pall., has been reported to have anti-inflammation and antioxidant effects in several animal models. Herein, we investigated the protective effects of PF against hydrogen peroxide (H(2)O(2))-induced oxidative damage in human umbilical vein endothelial cells (HUVECs). HUVECs were treated by H(2)O(2) (240 µmol/L) with or without PF. PF significantly increased the percent cell viability of HUVECs injured by H(2)O(2) using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. By flow cytometric analysis, PF markedly attenuated H(2)O(2)-induced apoptosis and intracellular reactive oxygen species production. In addition, PF also displayed a dose-dependent reduction of lactate dehydrogenase leakage, malondialdehyde formation, and caspase-3 proteolytic activities in H(2)O(2)-treated cells, which was accompanied with a restoration of the activities of endogenous antioxidants, including total superoxide dismutase and glutathione peroxidase. Finally, Western blot data revealed that H(2)O(2) upregulated phosphorylation of extracellular signal-regulated kinase 1/2 in HUVECs, which was almost completely reversed by PF. Taken together, our data provide the first evidence that PF has a protective ability against oxidative damage in HUVECs. PF may be a candidate medicine for the treatment of vascular diseases associated with oxidative stress.
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Affiliation(s)
- Tao Chen
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan Province, PR China
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Chen T, Guo ZP, Li MM, Li JY, Jiao XY, Zhang YH, Liu HJ. Tumour necrosis factor-like weak inducer of apoptosis (TWEAK), an important mediator of endothelial inflammation, is associated with the pathogenesis of Henoch-Schonlein purpura. Clin Exp Immunol 2011; 166:64-71. [PMID: 21762126 DOI: 10.1111/j.1365-2249.2011.04442.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Tumour necrosis factor-like weak inducer of apoptosis (TWEAK), a member of the tumour necrosis factor (TNF) family, has been implicated as a proinflammatory cytokine in many types of autoimmune and infectious diseases. However, information about TWEAK in dermatological diseases is limited. Herein, we investigated the role of TWEAK in patients with Henoch-Schonlein purpura (HSP) and the ability of TWEAK on chemokine production in the human dermal microvascular endothelial cell line (HMEC-1). Serum TWEAK levels in patients with HSP, together with patients with psoriasis vulgaris (PV) and atopic dermatitis (AD), were detected by enzyme-linked immunosorbent assay (ELISA). HMEC-1 cells were treated with TWEAK at concentrations ranging from 1 ng/ml to 100 ng/ml. Serum levels of TWEAK were elevated in patients with HSP in the acute stage but not in patients with PV or AD. Moreover, TWEAK levels were correlated with the severity of HSP. TWEAK markedly induced CCL5 and CXCL8 production at both mRNA and protein levels in HMEC-1 cells. In addition, TWEAK-stimulated HMEC-1 supernatant enhanced HL-60 or human acute monocytic leukaemia cell line (THP-1) cell migration. Finally, Western blot data revealed that TWEAK can induce rapid phosphorylation of inhibitor of κB-α (IκBα) in HMEC-1 cells. In conclusion, we show that serum levels of TWEAK were elevated in patients with acute stage HSP. TWEAK may act as a regulator of nuclear factor-κB (NF-κB) activation and chemokine production in human dermal microvascular endothelial cells, thus promoting leucocyte migration in cutaneous vasculitis.
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Affiliation(s)
- T Chen
- Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China
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CCL5, CXCL16, and CX3CL1 are associated with Henoch-Schonlein purpura. Arch Dermatol Res 2011; 303:715-25. [DOI: 10.1007/s00403-011-1150-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Revised: 05/10/2011] [Accepted: 05/17/2011] [Indexed: 01/14/2023]
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