Abstract：
:In this study, the effect of Yersinia derivatives on nitric oxide (NO), hydrogen peroxide (H2O2) and tumor necrosis factor-alpha (TNF-alpha) production by murine peritoneal macrophages was investigated. Addition of lipopolysaccharide (LPS) to the macrophage culture resulted in NO production that was dose dependent. On the other hand, bacterial cellular extract (CE) and Yersinia outer proteins (Yops) had no effect on NO production. The possible inhibitory effect of Yops on macrophage cultures stimulated with LPS was investigated. Yops partially inhibited NO production (67.4%) when compared with aminoguanidine. The effects of Yersinia derivatives on H2O2 production by macrophages were similar to those on NO production. LPS was the only derivative that stimulated H2O2 release in a dose-dependent manner. All Yersinia derivatives provoked the production of TNF-alpha, but LPS had the strongest effect, as observed for NO production. CE and Yops stimulated TNF-alpha production to a lesser extent than LPS. The results indicate the possibility that in vivo Yops may aid the evasion of the bacteria from the host defense mechanism by impairing the secretion of NO by macrophages.
journal_name
Microbes Infectjournal_title
Microbes and infectionauthors
Carlos IZ,Silva Monnazzi LG,Falcão DP,Machado de Medeiros BMdoi
10.1016/j.micinf.2003.10.012subject
Has Abstractpub_date
2004-02-01 00:00:00pages
207-12issue
2eissn
1286-4579issn
1769-714Xpii
S1286457903003162journal_volume
6pub_type
杂志文章abstract：:Human histocompatibility leukocyte antigen (HLA)-G is an antigen-presenting molecule. This review discusses the possibility that this might not be its primary function. HLA-G indeed modulates innate immunity by interacting with immunoglobulin-like receptors and by regulating HLA-E expression and its subsequent interac...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(01)01386-7
更新日期：2001-04-01 00:00:00
abstract：:Foot-and-mouth disease virus (FMDV) is a member of the Aphthovirus genus in the Picornaviridae family. Seven distinct serotypes, each including a wide range of variants, have been defined. FMD, affects wild and domesticated ruminants and pigs, is difficult to control and is the major constraint to international trade ...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(02)01634-9
更新日期：2002-08-01 00:00:00
abstract：:Using a viral-induced immunopathology model, we showed that when CD4(+) T cells were allowed to undergo homeostatic expansion prior to ocular herpes simplex virus infection, mice developed more severe inflammatory lesions with the increased severity associated with enhanced effector function of ocular CD4(+) T cells, ...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2008.06.012
更新日期：2008-08-01 00:00:00
abstract：:We tested the hypothesis that host resistance to Campylobacter jejuni is Nramp1 dependent. Following intraperitoneal (IP) inoculation of Nramp1+/+ and isogenic Nramp1-deficient (Nramp1-/-) mice C. jejuni primarily associated with mac1-positive cells in liver tissue. A significant reduction of C. jejuni was observed in...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2008.05.001
更新日期：2008-07-01 00:00:00
abstract：:Clinical metagenomics (CMg) refers to as the application of metagenomic sequencing of clinical samples in order to recover clinically-relevant information. Due to the increasing access to next-generation sequencing (NGS) facilities, CMg is a gast-growing field. In this context, we held the second International Confere...
journal_title：Microbes and infection
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doi：10.1016/j.micinf.2018.02.005
更新日期：2018-04-01 00:00:00
abstract：:In this paper we evaluate the role of human γδ T cells in control of Francisella tularensis infection. Using an in vitro model of infection, a reduction in bacterial numbers was detected in the presence of human γδ T cells for both attenuated LVS and virulent SCHU S4 strains of F. tularensis. Antibody neutralisation o...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2012.02.001
更新日期：2012-07-01 00:00:00
abstract：:Superinfection rates of human immunodeficiency virus type 1 (HIV-1) have increasingly been leading to more variation in HIV-1, as evidenced by the emergence of circulating recombinant forms (CRFs). We recently reported complementation in a persistently replication-defective subtype B-infected cell clone, L-2, by super...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2008.01.012
更新日期：2008-04-01 00:00:00
abstract：:Autoantibodies against various components of host are known to occur in leprosy. Nerve damage is the primary cause of disability associated with leprosy. The aim of this study was to detect the level of autoantibodies and lympho-proliferative response against myelin basic protein (MBP) in leprosy patients (LPs) and th...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2014.12.015
更新日期：2015-04-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.micinf.2004.09.009
更新日期：2005-01-01 00:00:00
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journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/j.micinf.2007.01.014
更新日期：2007-04-01 00:00:00
abstract：:Intramuscular immunization with DNA vaccines has been shown to induce a broad range of immune responses and protective immunity in many animal models, but it is less effective in primates. One reason for this may be the low expression of vector-encoded antigen in cells. Here we report that the use of vaccine vector (p...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2006.06.010
更新日期：2006-09-01 00:00:00
abstract：:Infectious diseases are major causes, with malignancies, of morbidity and mortality in the elderly. Increased susceptibility to infections may result from underlying dysfunction of an aged immune system; moreover, inappropriate immunologic functions associated with aging can determine an insufficient response to vacci...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(01)01443-5
更新日期：2001-08-01 00:00:00
abstract：:In order to invade mammalian cells, Trypanosoma cruzi infective forms cause distinct rearrangements of membrane and host cell cytoskeletal components. Rho GTPases have been shown to regulate three separate signal transduction pathways, linking plasma membrane receptors to the assembly of distinct actin filament struct...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2004.01.009
更新日期：2004-04-01 00:00:00
abstract：:Our previous study has demonstrated that IL-10 may modulate both indoleamine 2,3-dioxygenase (IDO) and CD163 expression in lepromatous leprosy (LL) cells, favoring Mycobacterium leprae persistence through induction of regulatory pathways and iron storage. Here, we observed that in LL lesion cells there is an increase ...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2017.06.006
更新日期：2017-11-01 00:00:00
abstract：:The type III secretion system of Salmonella enterica serovar Typhimurium can be used to target heterologous antigens directly into the cytosol of antigen-presenting cells. Our laboratory has previously reported that the single oral immunization of mice with a recombinant Salmonella strain expressing the translocated Y...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2005.02.007
更新日期：2005-05-01 00:00:00
abstract：:The Gram-negative bacterium Burkholderia cepacia has recently emerged as an important opportunistic pathogen in humans. This review focuses on the cellular aspects of B. cepacia infection and the dynamics of the B. cepacia-host cell interaction, including recent advances in our understanding of the ability of B. cepac...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(01)01389-2
更新日期：2001-04-01 00:00:00
abstract：:The strategies used by bacterial pathogens to circumvent host defense mechanisms remain largely undefined in bivalve molluscs. In this study, we investigated experimentally the interactions between the Pacific oyster (Crassostrea gigas) immune system and Vibrio aestuarianus strain 01/32, a pathogenic bacterium origina...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2006.07.020
更新日期：2006-10-01 00:00:00
abstract：:The bacteria-phagocyte interaction is of central importance in Salmonella pathogenesis. Immediately following phagocytosis, the NADPH phagocyte oxidase complex assembles in vesicles and produces highly toxic reactive oxygen species that play a major role in initial Salmonella killing by phagocytes. However, Salmonella...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(01)01492-7
更新日期：2001-11-01 00:00:00
abstract：:Helicobacter pylori infection is highly prevalent in Chile (73%). Usually a minority of infected patients develops complications such as ulcers and gastric cancer that have been associated with the presence of virulence factors (cagA, vacA) and host T helper response (Th1/Th2). Our aim was to evaluate the relationship...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2006.12.012
更新日期：2007-04-01 00:00:00
abstract：:C/EBPbeta plays a pivotal role in activation of human immunodeficiency virus type 1 (HIV-1) in monocytes/macrophages. However, mechanisms for functional regulation of C/EBPbeta remain uncharacterized. Previous studies indicated that NF-kappaB activation by tumor necrosis factor (TNF) receptor family, which activates T...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2007.02.017
更新日期：2007-05-01 00:00:00
abstract：:Onchocerca volvulus is a tissue-invasive parasitic nematode causing skin and eye pathology in human onchocerciasis. The filariae habour abundant intracellular Wolbachia bacteria, now recognised as obligatory symbionts, and therefore emerging as a novel target for chemotherapy. Recent research demonstrates that both th...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/j.micinf.2003.11.003
更新日期：2004-01-01 00:00:00
abstract：:Campylobacter jejuni is one of the most common causes of bacterial gastroenteritis and chronic sequelae, such as reactive arthritis and Guillain-Barré syndrome (GBS), are known to follow uncomplicated infections. While little is known about reactive arthritis following Campylobacter infection, our knowledge on the pat...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(02)01553-8
更新日期：2002-04-01 00:00:00
abstract：:A non-toxigenic tox gene-bearing (NTTB) Corynebacterium ulcerans was grown from the wound of a 61-year-old gardener and in a nasal specimen from the patient's asymptomatic dog. The two isolates were similar in terms of antibiogram, multilocus sequence typing (ST341), virulence genes, and only three SNPs were found to ...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2015.07.004
更新日期：2015-10-01 00:00:00
abstract：:Leprosy is a chronic infection of the skin and nerves caused by Mycobacterium leprae. Erythema nodosum leprosum (ENL) is a reactive state in lepromatous leprosy. Thalidomide has been used to treat ENL since the 1960s. One of its mechanisms of action is anti-inflammatory through selective inhibition of the pro-inflamma...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(02)01645-3
更新日期：2002-09-01 00:00:00
abstract：:Streptococcus pneumoniae is a major pathogen causing potentially life-threatening community-acquired diseases in both the developed and developing world. Since 1967, there has been a dramatic increase in the incidence of penicillin-resistant and multiply antibiotic-resistant pneumococci worldwide. Prevention of access...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(00)01345-9
更新日期：2000-12-01 00:00:00
abstract：:Toll-like receptors recognize specific patterns of microbial components and regulate the activation of both innate and adaptive immunity. TLR4 recognizes lipopolysaccharide (LPS) in monocytes/macrophages with the help of other molecules like CD14 and MD-2, which indicates that the functional LPS receptor forms a large...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2004.05.010
更新日期：2004-09-01 00:00:00
abstract：:Production of inflammatory cytokines and type I interferons by mammalian cells is mediated through virus-specific activation of Toll-like receptors (TLRs). Known roles for different TLRs and speculation as to their roles in viral pathogenesis and immunity are discussed in this review. ...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/j.micinf.2004.08.013
更新日期：2004-12-01 00:00:00
abstract：:BALB/c mice immunized with cruzipain, a major Trypanosoma cruzi antigen, produce specific and autoreactive immune responses against heart myosin, associated with cardiac functional and structural abnormalities. Preferential activation of the Th2 phenotype and an increase in cell populations expressing CD19+, Mac-1+ an...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2004.07.010
更新日期：2004-11-01 00:00:00
abstract：:Monoxenous trypanosomatids usually have an invertebrate as the only host in their life cycles, however, they have been found repeatedly in plants and/or mammals. To succeed in colonizing a vertebrate host, the parasite must quickly adapt to drastic changes in the environment (e.g. temperature), which reflect the condi...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2010.07.010
更新日期：2010-11-01 00:00:00
abstract：:Enterotoxigenic Escherichia coli (ETEC) are a major cause of diarrheal illness in developing countries, and perennially the most common cause of traveller's diarrhea. ETEC constitute a diverse pathotype that elaborate heat-labile and/or heat-stable enterotoxins. Recent molecular pathogenesis studies reveal sophisticat...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/j.micinf.2009.10.002
更新日期：2010-02-01 00:00:00
