Abstract:
:Joint inflammation is a key player in the pathogenesis of osteoarthritis (OA). Imperatorin, a plant-derived small molecule has been reported to have anti-inflammatory properties; however, its effect on chondrocytes is not known. Here, we investigated the effects of Imperatorin on interleukin-1β (IL-1β) induced expression of inducible nitric oxide synthase (iNOS) and nitric oxide production in primary human OA chondrocytes and cartilage explants culture under pathological conditions and explored the associated signaling pathways. We pretreated chondrocytes or explants with Imperatorin (50 μM) followed by IL-1β (1 ng/ml), and the culture supernatant was used to determine the levels of nitrite production by Griess assay and chondrocytes were harvested to prepare cell lysate or RNA for gene expression analysis of iNOS by Western blot or qPCR and in explants by immunohistochemistry (IHC). Pretreatment of primary chondrocytes and cartilage explants with Imperatorin suppressed IL-1β induced expression of iNOS and NO production. Imperatorin blocked the IL-1β-induced phosphorylation of ERK-MAPK/AP1 signaling pathway to suppress iNOS expression. The role of ERK in the regulation of iNOS expression was verified by using ERK inhibitor. Interestingly, we also found that Imperatorin binds to iNOS protein and inhibits its activity in vitro. Our data demonstrated that Imperatorin possess strong anti-inflammatory activity and may be developed as a therapeutic agent for the management of OA.
journal_name
Int Immunopharmacoljournal_title
International immunopharmacologyauthors
Ahmad N,Ansari MY,Bano S,Haqqi TMdoi
10.1016/j.intimp.2020.106612subject
Has Abstractpub_date
2020-08-01 00:00:00pages
106612eissn
1567-5769issn
1878-1705pii
S1567-5769(20)31143-7journal_volume
85pub_type
杂志文章abstract:BACKGROUND:Allergic rhinitis (AR) is characterized by a Th2 polarized immune response and soluble HLA (sHLA) molecules play an immunomodulatory role in this response. Previously, it has been reported that these molecules are increased in sera of patients with pollen-induced allergic rhinitis studied outside the pollen ...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2009.04.014
更新日期:2009-08-01 00:00:00
abstract::Cerebral infarction causes severe social and economic burdens to patients due to its high morbidity and mortality rates, and the available treatments are limited. RO27-3225 is a highly selective melanocortin receptor 4 agonist that alleviates damage in many nervous system diseases, such as cerebral hemorrhage, traumat...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2020.106281
更新日期:2020-04-01 00:00:00
abstract:OBJECTIVE:Inhaled corticosteroids (ICS) are generally used to treat patients with chronic obstructive pulmonary disease (COPD) who suffer from repeated exacerbations. Recently, it was reported that ICS treatment increased the risk of pneumonia in COPD patients. But it is controversial.The objective of this paper is to ...
journal_title:International immunopharmacology
pub_type: 杂志文章,meta分析
doi:10.1016/j.intimp.2019.105950
更新日期:2019-12-01 00:00:00
abstract::Lipopolysaccharide (LPS)-induced TLR4-NF-(K)B signaling plays an important role in the development of prostatic tumors from chronic bacterial prostatic infection. Although many studies support the role of selenium in protecting against the development of prostate cancer secondary to chronic prostatitis, the mechanism ...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2009.09.020
更新日期:2010-01-01 00:00:00
abstract::This study was aimed to investigate the anti-tumor and immunomodulatory activities of an exopolysaccharide (EPS) from Rhizopus nigricans. Our results showed EPS could significantly inhibit the tumor growth and increase the immune organs index of CT26 tumor-bearing mice. EPS treatment increased the productions of inter...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2016.04.033
更新日期:2016-07-01 00:00:00
abstract::Acute lung injury (ALI) is a complex clinical syndrome with high morbidity and mortality rates. Autophagy is an adaptive process that plays a complex role in ALI. The aim of this study was to investigate the effects of autophagy on lipopolysaccharide (LPS)-induced lung injury by establishing a rat ALI model and to fur...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2019.105790
更新日期:2020-01-01 00:00:00
abstract::Allergic asthma has emerged as an important public health problem of urban populations in developed countries. Very often herbal medicine is used to treat this widespread disease, due to the lack of efficacy and the important side effects related to the classical drugs in use. Along this line, Ocimum gratissimum (Og) ...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2012.03.012
更新日期:2012-05-01 00:00:00
abstract:OBJECTIVE:Ankylosing spondylitis (AS) is a disease characterized by inflammation of the sacroiliac joint and the attachment point of the spine. This study aimed to investigate the effect of microRNA (miR)-204-targeted GSDMD on fibroblast-like synoviocytes (FLSs) in AS. METHODS:miR-204, GSDMD, pyrolysis-related genes (...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2020.107227
更新日期:2021-02-01 00:00:00
abstract::Despite scopolin is a main coumarin constituent in the stems of Erycibe obtusifolia Benth, a herb drug that has long been utilized in traditional Chinese medicine for the treatment of rheumatoid arthritis, little information is available about the pharmacological activities of this compound. The present study was perf...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2009.02.019
更新日期:2009-07-01 00:00:00
abstract:BACKGROUND:Immunoglobulin A (IgA) nephropathy (IgAN) is a common primary glomerular disease that potentially leads to renal failure, risk prediction of declining kidney function is crucial for early clinical management. Immunoglobulin G (IgG) is an important constituent of the immune system and serves as the preferred ...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2018.10.044
更新日期:2019-01-01 00:00:00
abstract::Cudratricusxanthone A (CTXA), isolated from the roots of Cudrania tricuspidata Bureau (Moraceae) has an isoprenylated xanthone skeleton that is known to exert a variety of biological activities. In the present study, we demonstrated that CTXA inhibited cyclooxygenase-2 (COX-2) and inducible nitric oxide (NO) synthase ...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2008.11.008
更新日期:2009-02-01 00:00:00
abstract::2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) exposure results in an increased percentage of CD11b(+) (Mac-1(+)) cells in the spleens of mice challenged with P815 tumor cells, coincident with a failure of the mice to generate allospecific CD8(+) CTL activity. Since CD11b(+)Gr-1(+) myeloid suppressor cells (MSC) have been...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/S1567-5769(03)00046-8
更新日期:2003-04-01 00:00:00
abstract::Neuroinflammation, characterized by the activation of microglia and astrocytes, is important in the pathogenesis of many neurological disorders, such as Alzheimer's disease. Nonsteroidal anti-inflammatory drugs (NSAIDs), a group of chemically heterogenous medications, are used widely in the treatment of inflammation. ...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2020.106501
更新日期:2020-07-01 00:00:00
abstract::Type-1 immunity has an essential role for our host defenses against cancer and outer pathogens such as bacteria and virus. We demonstrated here that the edible plant extract of Chrysanthemum coronarium L. (C. coronarium) remarkably activates Type-1 immunity in a Toll-like receptor (TLR)2-, TLR4-, and TLR9-dependent ma...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2010.11.026
更新日期:2011-02-01 00:00:00
abstract::We have used a high throughput small molecule screen, using a fission yeast-based assay, to identify novel phosphodiesterase 7 (PDE7) inhibitors. One of the most effective hit compounds was BC12, a barbituric acid-based molecule that exhibits unusually potent immunosuppressive and immunomodulatory actions on T lymphoc...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2016.06.004
更新日期:2016-09-01 00:00:00
abstract::Hericium erinaceum is a medicinal and edible mushroom with anti-microbial and anti-cancer activities. To evaluate the immunoregulatory functions of H. erinaceum, we prepared water extract from H. erinaceum (WEHE) and investigated its ability to activate macrophages and to induce nitric oxide (NO) production in macroph...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2006.03.005
更新日期:2006-08-01 00:00:00
abstract::Ulcerative colitis is a chronic nonspecific inflammatory disease of unknown cause. The aim of this study was to evaluate the anti-inflammatory effect of tauroursodeoxycholate in 2, 4, 6-trinitrobenzenesulfonic acid-induced experimental colitis in mice. After the induction of colitis for 24h, the mice were administrate...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2016.04.037
更新日期:2016-07-01 00:00:00
abstract::Inflammation plays an important role in the pathogenesis of cerebral ischemia. Syringin (SYR) is an active substance isolated from Acanthopanax senticosus plants, and possesses anti-inflammatory and neuroprotective properties. However, its effects on cerebral ischemic injury, as well as the underlying molecular events...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2020.107268
更新日期:2021-01-01 00:00:00
abstract::Berberine (BBR), one of the main bioactive compounds in Rhizoma coptidis, has multiple pharmacological activities. It has been reported that 8-cetylberberine (8-BBR-C16) has increased anti-microbial property in vivo and a higher bioavailability in hamsters. Therefore, in the present study, we used apolipoprotein E-def...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2016.12.001
更新日期:2017-02-01 00:00:00
abstract::Lipopolysaccharide (LPS) plays an important role in Gram-negative bacteria-induced sepsis and multiple organ dysfunction syndrome, which are still the leading cause of high mortality in intensive care units. Although paeoniflorin (Pae) has reportedly exhibited anti-inflammatory effect and protection against immunologi...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2010.11.012
更新日期:2011-02-01 00:00:00
abstract::The early safety and efficacy of tacrolimus after liver transplantation has been shown in two multicenter trials. Herein, we report our single-center long-term follow-up of a randomized controlled trial. As part of a European multicenter trial, 121 patients entered the study at our institution and were randomly assign...
journal_title:International immunopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/j.intimp.2004.09.014
更新日期:2005-01-01 00:00:00
abstract::Macrophages are highly plastic cells. Depending on stimulation, macrophages rapidly polarize to functionally distinct phenotypes that are involved in the pathogenesis of inflammatory bowel disease (IBD). 1,25‑Dihydroxyvitamin D (1,25(OH)2D3) has immunomodulatory activity, and 1,25(OH)2D3 deficiency is correlated with ...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2018.12.015
更新日期:2019-02-01 00:00:00
abstract::To study the effects of Taishan Pinus massoniana pollen polysaccharides (TPPPS) on Bordetella avium outer membrane protein A (ompA) recombinant protein vaccine, ompA was expressed, confirmed by Western blotting and mixed with TPPPS. Female BALB/c mice were randomly divided into six groups (I-VI). Groups I, II, and III...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2013.09.008
更新日期:2013-11-01 00:00:00
abstract:INTRODUCTION:Sulfur mustard (SM) intoxication produces local and systemic changes in the human body. In this study, the relationship between tear and serum matrix metalloproteinase (MMP)-9 and serum tissue inhibitors of metalloproteinases (TIMPs) are assessed in serious eye-injured SM-exposed casualties. METHODS:A gro...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2019.105812
更新日期:2019-12-01 00:00:00
abstract::Melatonin is a free radical scavenger and broad-spectrum antioxidant with immunomodulatory effects. The objective of the study is to investigate the effects of melatonin in hepatic ischemia/reperfusion (I/R) induced lung injury and explore its underlying mechanisms. Hepatic I/R injury was induced via portal vein and h...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2015.10.012
更新日期:2015-12-01 00:00:00
abstract::Lung innate immune response plays an important role in the clearance of pathogens from lungs, however, profound activation of innate immune cells (alveolar macrophages or neutrophils) can lead to development of acute lung inflammation or injury by producing various pro-inflammatory molecules (IL-1, TNF-alpha and H2O2 ...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2010.04.008
更新日期:2010-07-01 00:00:00
abstract::Fructose-1,6-diphosphate (FDP), a high-energy glycolytic pathway intermediate, is reported to have a salutary effect in endotoxic shock and sepsis, but its underlying mechanism of action in inflammation is incompletely understood. In this study, our aim was to examine the function of FDP on acute lung injury (ALI) ind...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2008.09.004
更新日期:2008-12-20 00:00:00
abstract::Angiogenesis plays a crucial role at the early stage of tumorigenesis and tumor progression. A suitable model will be useful not only for the clarification of the underlying molecular mechanisms, but also for high-throughput identification of novel anti-angiogenesis compounds. Here, we established a zebrafish model fo...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2012.12.002
更新日期:2013-02-01 00:00:00
abstract::The effects of TGF-β on dendritic cells (DCs) in the tumor microenvironment are not well-understood. In this study, we investigated the effect of TGF-β on the induction of programmed death ligand-1 (PD-L1) expression in DCs and the underlying mechanism, and we further investigated the influence of the DCs with PD-L1 e...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2014.02.027
更新日期:2014-05-01 00:00:00
abstract:OBJECTIVE:Acute exacerbation of idiopathic pulmonary fibrosis (AE-IPF) is of concern because of its propensity for rapid deterioration and high mortality. Its aetiology and mechanism are still unclear. The aims of this study were to clarify the pathophysiology differences between AE-IPF and stable IPF (S-IPF) by compar...
journal_title:International immunopharmacology
pub_type: 杂志文章
doi:10.1016/j.intimp.2019.02.039
更新日期:2019-05-01 00:00:00