Decreased expression of liver X receptor-α in macrophages infected with Chlamydia pneumoniae in human atherosclerotic arteries in situ.

Abstract:

:In in vitro experiments, Chlamydia pneumoniae has been shown to infect macrophages and to accelerate foam cell formation. It has been hypothesized that the C. pneumoniae infection affects foam cell formation by suppressing the expression of liver X receptors (LXR), but whether such an event occurs in human atherosclerosis is not known. In this study we examined carotid artery segments, obtained by endarterectomy, in which the presence of C. pneumoniae was confirmed by both polymerase chain reaction and immunohistochemistry. The expression of LXR-α in macrophages infected with C. pneumoniae and macrophages that were not infected was compared using a quantitative immunohistochemical analysis. The analysis revealed a 2.2-fold reduction in the expression of LXR-α in C. pneumoniae-infected cells around the lipid cores in atherosclerotic plaques. In the cytoplasm of laser-capture microdissected cells that were immunopositive for C. pneumoniae, electron microscopy demonstrated the presence of structures with the appearance of elementary, reticulate and aberrant bodies of C. pneumoniae. We conclude that LXR-α expression is reduced in C. pneumoniae-infected macrophages in human atherosclerotic lesions which supports the hypothesis that C. pneumoniae infection might suppress LXR expression in macrophages transforming into foam cells.

journal_name

J Innate Immun

authors

Bobryshev YV,Orekhov AN,Killingsworth MC,Lu J

doi

10.1159/000327522

subject

Has Abstract

pub_date

2011-01-01 00:00:00

pages

483-94

issue

5

eissn

1662-811X

issn

1662-8128

pii

000327522

journal_volume

3

pub_type

杂志文章
  • Systems biology of circadian-immune interactions.

    abstract::There is increasing evidence that the immune system is regulated by circadian rhythms. A wide range of immune parameters, such as the number of red blood cells and peripheral blood mononuclear cells as well as the level of critical immune mediators, such as cytokines, undergo daily fluctuations. Current experimental d...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章,评审

    doi:10.1159/000342427

    authors: Mavroudis PD,Scheff JD,Calvano SE,Androulakis IP

    更新日期:2013-01-01 00:00:00

  • Impairment in natural killer cells editing of immature dendritic cells by infection with a virulent Trypanosoma cruzi population.

    abstract::Early interactions between natural killer (NK) and dendritic cells (DC) shape the immune response at the frontier of innate and adaptive immunity. Activated NK cells participate in maturation or deletion of DCs that remain immature. We previously demonstrated that infection with a high virulence (HV) population of the...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000350242

    authors: Batalla EI,Pino Martínez AM,Poncini CV,Duffy T,Schijman AG,González Cappa SM,Alba Soto CD

    更新日期:2013-01-01 00:00:00

  • Syk Inhibitor Attenuates Polymicrobial Sepsis in FcgRIIb-Deficient Lupus Mouse Model, the Impact of Lupus Characteristics in Sepsis.

    abstract::The impact of spleen tyrosine kinase (Syk) signaling might be prominent in lupus because (i) Syk is a shared downstream signaling molecule among circulating immune complex, LPS, and (1→3)-β-D-glucan (BG), and (ii) all of these factors are detectable in the serum of Fc gamma receptor IIb-deficient (FcgRIIb-/-) mice wit...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000509111

    authors: Issara-Amphorn J,Chancharoenthana W,Visitchanakun P,Leelahavanichkul A

    更新日期:2020-01-01 00:00:00

  • Neutrophil apoptosis: relevance to the innate immune response and inflammatory disease.

    abstract::Neutrophils are the most abundant cell type involved in the innate immune response. They are rapidly recruited to sites of injury or infection where they engulf and kill invading microorganisms. Neutrophil apoptosis, the process of programmed cell death that prevents the release of neutrophil histotoxic contents, is t...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章,评审

    doi:10.1159/000284367

    authors: Fox S,Leitch AE,Duffin R,Haslett C,Rossi AG

    更新日期:2010-01-01 00:00:00

  • Contribution of alternatively activated macrophages to allergic lung inflammation: a tale of mice and men.

    abstract::The concept that macrophages play an active role in inflammatory responses began its development in the late 1800s with the now iconic studies by Elie Metchnikoff using starfish larvae and Daphnia [reviewed in Kaufmann SHE: Nat Immunol 2008;9:705-712 and Cavaillon JM: J Leukoc Biol 2011;90:413-424]. Based on his obser...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000336025

    authors: Dasgupta P,Keegan AD

    更新日期:2012-01-01 00:00:00

  • C4a: An Anaphylatoxin in Name Only.

    abstract::Activation of complement leads to generation of the 3 anaphylatoxins C3a, C4a, and C5a. Although all 3 peptides are structurally similar, only C3a and C5a share a similar functional profile that includes the classic inflammatory activities and, more recently, developmental homing and regenerative properties among othe...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章,评审

    doi:10.1159/000371423

    authors: Barnum SR

    更新日期:2015-01-01 00:00:00

  • The transcription factor nuclear factor of activated T cells c3 modulates the function of macrophages in sepsis.

    abstract::The role of the transcription factor nuclear factor of activated T cells (NFAT) was initially identified in T and B cell gene expression, but its role in regulating gene expression in macrophages during sepsis is not known. Our data show that NFATc3 regulates expression of inducible nitric oxide synthase (iNOS) in mac...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000362647

    authors: Ranjan R,Deng J,Chung S,Lee YG,Park GY,Xiao L,Joo M,Christman JW,Karpurapu M

    更新日期:2014-01-01 00:00:00

  • Antiviral innate immunity disturbs podocyte cell function.

    abstract::Immunoglobulin A nephropathy (IgAN) is the most common form of glomerulonephritis throughout the world. A majority (approx. 60%) of patients with IgAN experience disease exacerbations associated with an acute respiratory or gastrointestinal illness that appears to represent a viral infection. However, the exact mechan...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000345255

    authors: Yamashita M,Millward CA,Inoshita H,Saikia P,Chattopadhyay S,Sen GC,Emancipator SN

    更新日期:2013-01-01 00:00:00

  • Interleukin 1β-Responsive MicroRNA-146a Is Critical for the Cytokine-Induced Tolerance and Cross-Tolerance to Toll-Like Receptor Ligands.

    abstract::Unwarranted overproduction of cytokines, such as interleukin (IL)-1β, can cause moderate to severe pathological complications, and thus elaborate mechanisms are needed to regulate its onset and termination. One such, well-known, mechanism is endotoxin tolerance, generally described as controlling lipopolysaccharide To...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000371517

    authors: Nahid MA,Satoh M,Chan EK

    更新日期:2015-01-01 00:00:00

  • Cellular Immune Response Involving Multinucleated Giant Hemocytes with Two-Step Genome Amplification in the Drosophilid Zaprionus indianus.

    abstract::Previously, a novel cell type, the multinucleated giant hemocyte (MGH) was identified in the ananassae subgroup of Drosophilidae. These cells share several features with mammalian multinucleated giant cells, a syncytium of macrophages formed during granulomatous inflammation. We were able to show that MGHs also differ...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000502646

    authors: Cinege G,Lerner Z,Magyar LB,Soós B,Tóth R,Kristó I,Vilmos P,Juhász G,Kovács AL,Hegedűs Z,Sensen CW,Kurucz É,Andó I

    更新日期:2020-01-01 00:00:00

  • Markers Involved in Innate Immunity and Neutrophil Activation are Elevated during Acute Human Anaphylaxis: Validation of a Microarray Study.

    abstract:BACKGROUND:We have previously identified the upregulation of the innate immune response, neutrophil activation, and apoptosis during anaphylaxis using a microarray approach. This study aimed to validate the differential gene expression and investigate protein concentrations of "hub genes" and upstream regulators during...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000492301

    authors: Francis A,Bosio E,Stone SF,Fatovich DM,Arendts G,MacDonald SPJ,Burrows S,Brown SGA

    更新日期:2019-01-01 00:00:00

  • Effects of ex vivo γ-tocopherol on airway macrophage function in healthy and mild allergic asthmatics.

    abstract::Elevated inflammation and altered immune responses are features found in atopic asthmatic airways. Recent studies indicate γ-tocopherol (GT) supplementation can suppress airway inflammation in allergic asthma. We studied the effects of in vitro GT supplementation on receptor-mediated phagocytosis and expression of cel...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000350234

    authors: Geiser M,Lay JC,Bennett WD,Zhou H,Wang X,Peden DB,Alexis NE

    更新日期:2013-01-01 00:00:00

  • The domain organization of p67 phox, a protein required for activation of the superoxide-producing NADPH oxidase in phagocytes.

    abstract::The phagocyte NADPH oxidase, crucial for innate immunity, is dormant in resting cells, but becomes activated during phagocytosis to produce superoxide, a precursor of microbicidal oxidants. In activation of the oxidase, the multidomain protein p67(phox)plays a central role: it translocates to the membrane as a ternary...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000235656

    authors: Yuzawa S,Miyano K,Honbou K,Inagaki F,Sumimoto H

    更新日期:2009-01-01 00:00:00

  • Killer immunoglobulin-like receptor transcriptional regulation: a fascinating dance of multiple promoters.

    abstract::Killer immunoglobulin-like receptors (KIRs) recognize class I major histocompatibility complex molecules and participate in the calibration of activation thresholds during human natural killer (NK) cell development. The stochastic expression pattern of the KIR repertoire follows the product rule, meaning that the prob...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章,评审

    doi:10.1159/000323929

    authors: Cichocki F,Miller JS,Anderson SK

    更新日期:2011-01-01 00:00:00

  • The Janus face of α-toxin: a potent mediator of cytoprotection in staphylococci-infected macrophages.

    abstract::After phagocytosis by macrophages, Staphylococcus aureus evades killing in an α-toxin-dependent manner, and then prevents apoptosis of infected cells by upregulating expression of antiapoptotic genes like MCL-1 (myeloid cell leukemia-1). Here, using purified α-toxin and a set of hla-deficient strains, we show that α-t...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000368048

    authors: Koziel J,Chmiest D,Bryzek D,Kmiecik K,Mizgalska D,Maciag-Gudowska A,Shaw LN,Potempa J

    更新日期:2015-01-01 00:00:00

  • Gene Expression Profiling and Functional Characterization of Macrophages in Response to Circulatory Microparticles Produced during Trypanosoma cruzi Infection and Chagas Disease.

    abstract:BACKGROUND:Chronic inflammation and oxidative stress are hallmarks of chagasic cardiomyopathy (CCM). In this study, we determined if microparticles (MPs) generated during Trypanosoma cruzi (Tc) infection carry the host's signature of the inflammatory/oxidative state and provide information regarding the progression of ...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000451055

    authors: Chowdhury IH,Koo SJ,Gupta S,Liang LY,Bahar B,Silla L,Nuñez-Burgos J,Barrientos N,Zago MP,Garg NJ

    更新日期:2017-01-01 00:00:00

  • HIV-1 Gag-virus-like particles inhibit HIV-1 replication in dendritic cells and T cells through IFN-α-dependent upregulation of APOBEC3G and 3F.

    abstract::Human immunodeficiency virus-1 (HIV-1) infection and the acquired immune deficiency syndrome (AIDS) pandemic remain global threats in the absence of a protective or a therapeutic vaccine. HIV-1 replication is reportedly inhibited by some cellular factors, including APOBEC3G (A3G) and APOBEC3F (A3F), which are well kno...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000339402

    authors: Chang MO,Suzuki T,Yamamoto N,Watanabe M,Takaku H

    更新日期:2012-01-01 00:00:00

  • Antiviral activity of innate immune protein ISG15.

    abstract::The host innate immune response, including the production of type-I IFN, represents the primary line of defense against invading viral pathogens. Of the hundreds of IFN-stimulated genes (ISGs) discovered to date, ISG15 was one of the first identified and shown to encode a ubiquitin-like protein that functions, in part...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章,评审

    doi:10.1159/000226245

    authors: Harty RN,Pitha PM,Okumura A

    更新日期:2009-01-01 00:00:00

  • Streptococcus pyogenes Escapes Killing from Extracellular Histones through Plasminogen Binding and Activation by Streptokinase.

    abstract::Histones are small basic proteins and highly conserved among eukaryotes. Their main function is binding, packaging and organizing of DNA in the nucleus, but extracellular histones are also potent antimicrobial proteins. Here we found that Streptococcus pyogenes - an important human pathogen - protects itself from hist...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000448039

    authors: Nitzsche R,Köhler J,Kreikemeyer B,Oehmcke-Hecht S

    更新日期:2016-01-01 00:00:00

  • Differential regulation by Toll-like receptor agonists reveals that MCPIP1 is the potent regulator of innate immunity in bacterial and viral infections.

    abstract::Toll-like receptors (TLRs) are key molecules in innate immunity that recognize a variety of pathogen-associated molecular patterns. Activation of TLRs by their agonists initiates several signaling cascades, which eventually result in the expression of immune modifiers. Despite the fact that MCPIP1 is reported as an im...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000339826

    authors: Blazusiak E,Florczyk D,Jura J,Potempa J,Koziel J

    更新日期:2013-01-01 00:00:00

  • Granzymes A and B Regulate the Local Inflammatory Response during Klebsiella pneumoniae Pneumonia.

    abstract::Klebsiella pneumoniae is a common cause of hospital-acquired pneumonia. Granzymes (gzms), mainly found in cytotoxic lymphocytes, have been implicated as mediators of infection and inflammation. We here sought to investigate the role of gzmA and gzmB in the host response to K. pneumoniae-induced airway infection and se...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000443401

    authors: García-Laorden MI,Stroo I,Blok DC,Florquin S,Medema JP,de Vos AF,van der Poll T

    更新日期:2016-01-01 00:00:00

  • Functional Interaction between Apolipophorins and Complement Regulate the Mosquito Immune Response to Systemic Infections.

    abstract::The complement-like protein thioester-containing protein 1 (TEP1) is the hallmark effector molecule against Plasmodium ookinetes in the malaria vector Anopheles gambiae. We have previously shown that the knockdown of the noncatalytic clip domain serine protease CLIPA2 increased TEP1-mediated killing rendering mosquito...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000443883

    authors: Kamareddine L,Nakhleh J,Osta MA

    更新日期:2016-01-01 00:00:00

  • Induced Disruption of the Iron-Regulatory Hormone Hepcidin Inhibits Acute Inflammatory Hypoferraemia.

    abstract::Withdrawal of iron from serum (hypoferraemia) is a conserved innate immune antimicrobial strategy that can withhold this critical nutrient from invading pathogens, impairing their growth. Hepcidin (Hamp1) is the master regulator of iron and its expression is induced by inflammation. Mice lacking Hamp1 from birth rapid...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000447713

    authors: Armitage AE,Lim PJ,Frost JN,Pasricha SR,Soilleux EJ,Evans E,Morovat A,Santos A,Diaz R,Biggs D,Davies B,Gileadi U,Robbins PA,Lakhal-Littleton S,Drakesmith H

    更新日期:2016-01-01 00:00:00

  • Increased CD11b and Decreased CD62L in Blood and Airway Neutrophils from Long-Term Smokers with and without COPD.

    abstract::There is incomplete mechanistic understanding of the mobilization of neutrophils in the systemic and local compartment in smokers with chronic obstructive pulmonary disease (COPD). In this pilot study, we characterized how the adhesion molecules CD11b and CD62L, surface markers indicative of priming, are altered as ne...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000509715

    authors: Stockfelt M,Christenson K,Andersson A,Björkman L,Padra M,Brundin B,Ganguly K,Asgeirsdottir H,Lindén S,Qvarfordt I,Bylund J,Lindén A

    更新日期:2020-01-01 00:00:00

  • PLA1A Participates in the Antiviral Innate Immune Response by Facilitating the Recruitment of TANK-Binding Kinase 1 to Mitochondria.

    abstract::As a key molecule in the antiviral innate immune response, the activation of TANK-binding kinase 1 (TBK1) is under tight regulation. In this report, we identified phosphatidylserine-specific phospholipase PLA1A as a host factor that modulates the TBK1 activation. Knockdown of PLA1A expression suppressed the innate imm...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000489832

    authors: Gao X,Chen D,Hu X,Zhou Y,Wang Y,Wu C,Chen J,Wang Y,Pei R,Chen X

    更新日期:2018-01-01 00:00:00

  • Natural killer cells in psoriasis.

    abstract::Psoriasis is one of the most common immune-mediated disorders. There is evidence that it is mediated by Th1 and, more recently, Th17 cells. The cytokine pattern, particularly the dominance of TNF-α, implicates the innate immune system in psoriasis pathogenesis. Of the many components of the innate immune system known ...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章,评审

    doi:10.1159/000328011

    authors: Tobin AM,Lynch L,Kirby B,O'Farrelly C

    更新日期:2011-01-01 00:00:00

  • Calcium-independent phospholipase A2 beta is dispensable in inflammasome activation and its inhibition by bromoenol lactone.

    abstract::Calcium-independent phospholipase A2 (iPLA2) has been suggested to play an important role in the activation of caspase-1 induced by lipopolysaccharides (LPS). Here, we used pharmacological and genetic approaches to study the role of iPLA 2 in the activation of caspase-1. Bromoenol lactone (BEL), an inhibitor that was ...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000227263

    authors: Franchi L,Chen G,Marina-Garcia N,Abe A,Qu Y,Bao S,Shayman JA,Turk J,Dubyak GR,Núñez G

    更新日期:2009-01-01 00:00:00

  • Highly pathogenic influenza viruses inhibit inflammatory response in monocytes via activation of rar-related orphan receptor RORα.

    abstract::Infections with highly pathogenic avian influenza viruses (HPAIV) in humans lead to systemic disease associated with cytokine storm and multiorgan failure. In this study we aimed to identify the role of monocytes for the host response to HPAIV infection. Using genome-wide microarray analysis, we surprisingly demonstra...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000346706

    authors: Friesenhagen J,Viemann D,Börgeling Y,Schmolke M,Spiekermann C,Kirschnek S,Ludwig S,Roth J

    更新日期:2013-01-01 00:00:00

  • Ficolins: complement-activating lectins involved in innate immunity.

    abstract::Ficolins are a group of oligomeric lectins with subunits consisting of both collagen-like and fibrinogen-like domains. The majority of ficolins identified in vertebrates and invertebrates to date recognize N-acetylglucosamine (GlcNAc). X-ray crystallographic analysis of human ficolins has shown that the fibrinogen-lik...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章,评审

    doi:10.1159/000228160

    authors: Matsushita M

    更新日期:2010-01-01 00:00:00

  • Induction of Neutrophil Extracellular Traps in Shiga Toxin-Associated Hemolytic Uremic Syndrome.

    abstract::Hemolytic uremic syndrome (HUS), a vascular disease characterized by hemolytic anemia, thrombocytopenia, and acute renal failure, is caused by enterohemorrhagic Shiga toxin (Stx)-producing bacteria, which mainly affect children. Besides Stx, the inflammatory response mediated by neutrophils (PMN) is essential to HUS e...

    journal_title:Journal of innate immunity

    pub_type: 杂志文章

    doi:10.1159/000445770

    authors: Ramos MV,Mejias MP,Sabbione F,Fernandez-Brando RJ,Santiago AP,Amaral MM,Exeni R,Trevani AS,Palermo MS

    更新日期:2016-01-01 00:00:00