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Gamal Allam, Imad A A Mohamed, Khaled A Alswat, Said H Abbadi, Raad Nassif, Bader J Alharthi, Amre Nasr
Tuberculosis (TB) considers one of the most common infectious diseases all over the world. IL-37, a novel member of the IL-1 family, exhibits anti-inflammatory activities. Various cytokine genes polymorphisms have been reported to be associated with susceptibility to TB infection. However, association between genetic variations in the IL-37 gene with susceptibility to TB infection is not known. Therefore, the aim of this investigation was to identify the association of IL-37 genetic polymorphisms with TB infection in Saudi population...
October 20, 2016: Microbiology and Immunology
M Zeinali, A Hadian Amree, H Khorramdelazad, H Karami, M Abedinzadeh
Varicocele is one of causes of the declined sperm quality and low sperm production, which can lead to infertility in males. There are several experimental and epidemiological findings which support the idea that inflammatory mechanisms play an essential role in varicocele pathogenesis. Besides, in this pathological state, interleukin-37 (IL-37) as an anti-inflammatory cytokine is able to bind interleukin-18-binding protein (IL-18BP), and subsequently binds IL-18 receptor β, inhibiting the pro-inflammatory activity of IL-18...
October 6, 2016: Andrologia
Jack Godsell, Ina Rudloff, Rangi Kandane-Rathnayake, Alberta Hoi, Marcel F Nold, Eric F Morand, James Harris
Systemic lupus erythematosus (SLE) is a systemic autoimmune disease characterized by the development of autoantibodies to nuclear antigens and inflammatory responses mediated by multiple cytokines. Although previous studies have determined clinical associations between SLE and the anti-inflammatory cytokines IL-10 and IL-37, their role in the disease, or their potential as biomarkers, remains unclear. We examined serum levels of IL-10 and IL-37 in a large cohort of SLE patients, with detailed longitudinal clinical data...
October 6, 2016: Scientific Reports
Jun-Ai Zhang, Gan-Bin Liu, Bi-Ying Zheng, Yuan-Bin Lu, Yu-Chi Gao, Xiao-Zhen Cai, You-Chao Dai, Shi-Yan Yu, Yan Jia, Chen Chen, Ze-Gang Zhuang, Xin Wang, Wan-Dang Wang, Xiao-Xia Fu, Lai-Long Yi, Ling Shen, Zheng W Chen, Jun-Fa Xu
Roles of human IL-37 in infections remain poorly characterized. Although plasma IL-37 is elevated in patients with tuberculosis (TB), IL-37 source and immune correlate in TB have not been investigated. It is also unknown whether and how TB can influence the ability of immune cells to mount innate responses of IL-37 and pre-inflammatory cytokines. Here, we demonstrated that IL-37b-producing monocytes coincided with a source of elevated plasma IL-37b in TB patients. While IL-37b production in TB was associated with prolonged/complicated TB, TB burdens and inflammatory reactions, it negatively correlated with immune responses of pro-inflammatory cytokines IL-1β, IL-6 and TNF-α or IL-10...
September 27, 2016: Molecular Immunology
Jingjing Yan, Yuling Zhang, Shimeng Cheng, Bin Kang, Jinbiao Peng, Xiaodan Zhang, Meichun Yuan, Wenqi Chu, Wen Zhang, Jiayin Shen, Shuye Zhang
Interleukin-37 (IL-37) is an inhibitory member of the IL-1 family of cytokines. We previously found that balanced selection maintains common variations of the human IL37 gene. However, the functional consequences of this selection have yet to be validated. Here, using cells expressing exogenous IL-37 variants, including IL-37 Ref and IL-37 Var1 and Var2, we found that the three variants of IL-37 exhibited different immunoregulatory potencies in response to immune stimulation. The protein level of IL-37 Var2 was found to be significantly less than that of IL-37 Ref or Var1, despite the comparable mRNA levels of all three variants...
September 26, 2016: Cellular & Molecular Immunology
Giulio Cavalli, Marije Koenders, Vassili Kalabokis, Jihye Kim, Aik Choon Tan, Cecilia Garlanda, Alberto Mantovani, Lorenzo Dagna, Leo A B Joosten, Charles A Dinarello
OBJECTIVES: The IL-1 family member IL-37 was recently characterized as a fundamental inhibitor of innate inflammation. We investigated the effects of recombinant IL-37 in joint inflammation and joint pathology in a mouse model of arthritis. In addition, we explored the potential for therapeutic use in human joint inflammation. METHODS: Wild-type mice were treated systemically with a recombinant form of the naturally occurring human IL-37, and then the knee joints were injected with streptococcal cell wall fragments; joint inflammation, synovial cytokine concentrations and histology were evaluated after 24 h...
August 26, 2016: Rheumatology
Anissa Berraïes, Besma Hamdi, Jamel Ammar, Kamel Hamzaoui, Agnès Hamzaoui
OBJECTIVE: Thymic stromal lymphopoietin (TSLP) plays a role in amplifying the inflammatory response in asthmatics. TSLP is also a critical factor in airway remodeling airways. The aim of this study was to assess the expression of TSLP in induced sputum from asthmatic children and to look to the impact of TNF-α and IL-37 on TSLP production in induced sputum from asthmatic children. METHODS: Forty children with well-controlled asthma (20 moderate and 20 mild asthmatics) were studied...
October 2016: Immunology Letters
Yu-Hua Chen, Bi-Yun Zhou, Xian-Jing Wu, Jun-Fa Xu, Jun-Ai Zhang, Yong-Hua Chen, Si-Si Liang
In the present study, we aimed to investigate the effects of CC chemokine ligand 22 (CCL22) and interleukin-37 (IL-37) on the proliferation and epithelial-mesenchymal transition (EMT) of non-small cell lung cancer (NSCLC) A549 cells. pDsRed-CCL22 and pEGFP-IL-37 plasmids were constructed. A549 cells were divided into six groups: the control, the pDsRed-N1 blank plasmid, the pEGFP-C1 blank plasmid, the pDsRed-CCL22 plasmid, the pEGFP‑IL-37 plasmid and the pDsRed-CCL22 + pEGFP-IL-37 plasmid group. Expression levels and localization of CCL22 and IL-37 in cells were detected by confocal microscopy...
October 2016: Oncology Reports
Kunwu Yu, Xiaohong Min, Yingzhong Lin, Ying Huang, Song Huang, Ling Liu, Yudong Peng, Kai Meng, Dazhu Li, Qingwei Ji, Qiutang Zeng
BACKGROUND: Our previous study indicates that IL-37 plays a critical role in both atherosclerosis and arterial calcification. However, whether IL-37 concentrations are significantly changed in patients with arterial calcification has not yet been investigated. METHODS: Anterior tibial arterial wall specimens were obtained from 8 patients with type 2 diabetes mellitus and 8 patients who experienced a traffic accident. IL-37 expression was measured by immunohistochemistry in the calcified and the normal samples...
October 1, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
J Huang, F L Hou, A Y Zhang, Z L Li
As an anti-inflammatory cytokine, interleukin-37 (IL-37) provides certain protective effects against inflammatory and autoimmune diseases. Recent reports indicate that IL-37 is expressed in foam cells of atherosclerotic plaques in both the coronary and carotid arteries of humans, suggesting the possible involvement of IL-37 in the pathogenesis and progression of atherosclerosis. Current evidence supports the protective role that IL-37 plays against atherosclerosis via the regulation of different subtypes of macrophage...
2016: Genetics and Molecular Research: GMR
Tian-Tian Wu, Wei-Min Li, Yong-Ming Yao
Autophagy is a degradative pathway that plays an essential role in maintaining cellular homeostasis. Most early studies of autophagy focused on its involvement in age-associated degeneration and nutrient deprivation. However, the immunological functions of autophagy have become more widely studied in recent years. Autophagy has been shown to be an intrinsic cellular defense mechanism in the innate and adaptive immune responses. Cytokines belong to a broad and loose category of proteins and are crucial for innate and adaptive immunity...
2016: International Journal of Biological Sciences
Mengmeng Zhao, Yongguang Hu, Ying Yu, Qing Lin, Jianhua Yang, Shao Bo Su, Guo-Tong Xu, Tianshu Yang
PURPOSE: Interleukin-37 is suggested as a novel proangiogenic factor in our previous study. In this study, the role of IL-37 was investigated in proliferative diabetic retinopathy (PDR). METHODS: Vitreous fluids from 10 patients with PDR and 8 controls were collected. The levels of IL-37 were determined by ELISA and the relationship between IL-37 and VEGF-A/Ang-2 was analyzed. The effects of IL-37 on chorioretinal endothelial cell (RF/6A) proliferation, migration, and tube formation were determined by BrdU incorporation assay, Boyden chamber assay, scratch-wound assay and tube formation assay...
June 1, 2016: Investigative Ophthalmology & Visual Science
Vivi A Ding, Ziwen Zhu, Huaping Xiao, Mark R Wakefield, Qian Bai, Yujiang Fang
Interleukin 37 (IL-37) is a new member of the IL-1 family which all have a similar β-barrel structure. Since its discovery, IL-37 has been studied extensively in immunological field. It has been established that IL-37 possesses anti-inflammatory characteristics both in innate immune response as well as in acquired immune responses by downregulating pro-inflammatory molecules. This review will discuss the role of IL-37 in immunological processes and neoplastic pathogenesis.
July 2016: Medical Oncology
Yandan Xie, Yuguang Li, Xiangna Cai, Xin Wang, Jilin Li
INTRODUCTION: The inflammatory receptor Toll-like receptors (TLRs) activation could induce endothelial inflammatory responses, which plays an important role in the development of many diseases including atherosclerosis. We already found that TLR2 activation of Peptidoglycan (PGN) stimulation could increase intercellular adhesion molecule-1 (ICAM-1) expression in HCAECs. Since anti-inflammatory cytokine interleukin (IL)-37 exhibits intra- and extracellular properties for suppressing innate inflammation, we want to investigate whether IL-37 suppresses ICAM-1 expression and this effect is in parallel with the inhibition of nuclear factor kappa B (NF-κB) activation upon PGN stimulation in HCAECs...
September 2016: International Immunopharmacology
Lin Lin, Jiayi Wang, Dongjuan Liu, Sai Liu, Hao Xu, Ning Ji, Min Zhou, Xin Zeng, Dunfang Zhang, Jing Li, Qianming Chen
Interleukin 37 (IL-37) has been reported to play a significant role in innate immune response and to be involved in several kinds of cancers. However, the investigation of association between IL-37 and oral mucosa carcinogenesis hasn't been clearly established. The aim of the study was to assess IL-37 expression and explore its role in oral mucosa carcinogenesis. The expression of IL-37 increased from normal control (NC) to Oral leukoplakia (OLK) and oral squamous cell carcinoma (OSCC). Moreover, statistically highly significant difference was present between scores of OLK with and without mild/moderate dysplasia (P < 0...
2016: Scientific Reports
M Wang, B Wang, Z Ma, X Sun, Y Tang, X Li, X Wu
The interleukin (IL)-1 family of cytokines comprises 11 members, including 7 pro-inflammatory cytokines (IL-1α, IL-1β, IL-18, IL-33, IL-36α, IL-36β,IL-36γ) and 4 anti-inflammatory cytokines (IL-1R antagonist (IL-1Ra), IL-36Ra, IL-37 and IL-38), and play central roles in mediating immune responses. In this study, we detected serum levels of IL-36 subfamily cytokines (including IL-36α, IL-36β, IL-36γ, IL-36Ra and IL-38), IL-37, IL-33 and aimed to investigate the roles of these cytokines in rheumatoid arthritis (RA) preliminarily...
2016: Cellular and Molecular Biology
Eliana Montanari, Stefan Stojkovic, Christoph Kaun, Christof E Lemberger, Rainer de Martin, Sabine Rauscher, Marion Gröger, Gerald Maurer, Christoph Neumayer, Ihor Huk, Kurt Huber, Svitlana Demyanets, Johann Wojta
Interleukin (IL)-33, a member of the IL-1 family of cytokines, is involved in various inflammatory conditions targeting amongst other cells the endothelium. Besides regulating the maturation and functions of myeloid cells, granulocyte macrophage-colony stimulating factor (GM-CSF) and macrophage-CSF (M-CSF) have been shown to play a role in such pathologies too. It was the aim of our study to investigate a possible influence of IL-33 on GM-CSF and M-CSF production by human endothelial cells. IL-33, but not IL-18 or IL-37, stimulated GM-CSF and M-CSF mRNA expression and protein production by human umbilical vein endothelial cells (HUVECs) and human coronary artery ECs (HCAECs) through the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway in an IL-1-independent way...
August 1, 2016: Thrombosis and Haemostasis
Jafari Saeed, Hideki Kitaura, Keisuke Kimura, Masahiko Ishida, Haruki Sugisawa, Yumiko Ochi, Akiko Kishikawa, Teruko Takano-Yamamoto
IL-37 is a newly defined member of the IL-1 cytokine family. It has been reported that IL-37 inhibited innate immunity and inflammatory responses in autoimmune diseases and tumors. IL-37 also inhibited Lipopolysaccharide (LPS)-induced immunological reaction. LPS is a bacterial cell wall component that is capable of inducing osteoclast formation and pathological bone resorption. However, there is no study to investigate the effect of IL-37 on LPS-induced osteoclast formation and bone resorption. The purpose of this study is to investigate the effect of IL-37 in LPS-induced osteoclast formation and bone resorption...
May 3, 2016: Immunology Letters
Martina Molgora, Isabella Barajon, Alberto Mantovani, Cecilia Garlanda
Interleukin-1 receptor family members (ILRs) and toll-like receptors (TLRs) are characterized by the presence of a conserved intracellular domain and the toll-IL-1resistance (TIR) domain and are key players in immunity and inflammation. ILR and TLR signaling is tightly regulated at different levels. All cell types of the innate immune system express ILRs and TLRs. In addition, IL-1 family members are emerging as key players in the differentiation and function of innate and adaptive lymphoid cells. IL-1R8, also known as TIR8 or SIGIRR, is a fringe member of the ILR family and acts as a negative regulator of ILR and TLR signaling, which dampens ILR- and TLR-mediated cell activation...
2016: Frontiers in Immunology
G-C Wu, H-M Li, J-B Wang, R-X Leng, D-G Wang, D-Q Ye
This study aims to evaluate the plasma interleukin (IL)-37 levels in systemic lupus erythematosus (SLE) patients, as well as its association with major clinical and laboratory features. Ninety consecutively selected SLE patients and 78 community-based healthy controls were recruited. Plasma IL-37 levels were detected by enzyme-linked immunosorbent assay (ELISA). The major clinical and laboratory data of SLE patients were also recorded. The results showed that IL-37 level was significantly higher in the plasma of patients with SLE compared with controls (p = 0...
October 2016: Lupus
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