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 conditions found in the insect and mammalian hosts. Leishmanolysin is a metalloprotease ubiquitously distributed in trypanosomatids, playing a myriad of functions. In Herpetomonas samuelpessoai, an insect trypanosomatid, the leishmanolysin-like molecule was implicated in the nutrition and insect adhesion. Herein, we showed that leishmanolysin expression is equally expressed in H. samuelpessoai parasites submitted to insect (26 °C) and mammalian (37 °C) temperatures. Also, the parasites grown in both temperatures interacted at similar rates with macrophages. Finally, we showed that leishmanolysin is involved in crucial steps in the interaction of H. samuelpessoai cells with macrophages, since the treatment with either anti-leishmanolysin antibodies or metalloprotease inhibitor 1,10-phenanthroline significantly reduced the association index. Similarly, the treatment of the macrophages with purified leishmanolysin promoted a powerful reduction in the association index, suggesting the direct involvement of macrophage receptors. These results suggest that H. samuelpessoai leishmanolysin molecules are not modulated by temperature and are involved in the interaction with mammalian cells.
journal_name
Microbes Infectjournal_title
Microbes and infectionauthors
Pereira FM,Santos-Mallet JR,Branquinha MH,d'Avila-Levy CM,Santos ALdoi
10.1016/j.micinf.2010.07.010subject
Has Abstractpub_date
2010-11-01 00:00:00pages
1061-70issue
12-13eissn
1286-4579issn
1769-714Xpii
S1286-4579(10)00185-1journal_volume
12pub_type
杂志文章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：:Syphilis, a sexually transmitted infection caused by the spirochetal bacterium Treponema pallidum, remains a global public health problem. T. pallidum is believed to be an extracellular pathogen and, as such, the identification of T. pallidum outer membrane proteins that could serve as targets for opsonic or bacterici...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2007.05.018
更新日期：2007-09-01 00:00:00
abstract：:Sheep develop clinical diseases after 3-5 years after infection with Mycobacterium avium subsp. paratuberculosis (MAP). Clinical symptoms of paratuberculosis include persistent diarrhea and weight loss due to a chronic inflammation of the small intestine. Tissue alterations in the areas of the ileo-cecal junction are ...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2009.04.006
更新日期：2009-05-01 00:00:00
abstract：:We previously showed the possibility that Gag A146P, which is an escape mutant from HLA-B∗57-restricted CTLs, was selected by HLA-B∗48:01-restricted Gag138-147(LI10)-specific CTLs in a Japanese cohort in which HLA-B∗57 individuals were not detected. We herein demonstrated Gag140-147(GI8) to be the optimal epitope rath...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2011.03.009
更新日期：2011-08-01 00:00:00
abstract：:E protein is a membrane component of severe acute respiratory syndrome coronavirus (SARS-CoV). Disruption of E protein may reduce viral infectivity. Thus, the SARS-CoV E protein is considered a potential target for the development of antiviral drugs. However, the cellular immune responses to E protein remain unclear i...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2006.05.008
更新日期：2006-08-01 00:00:00
abstract：:Patients with paracoccidioidomycosis (PCM) present marked involvement of the lungs during the course of the mycosis. The purpose of this work was to obtain bronchoalveolar lavage (BAL) fluid from these patients to study the cytopathology, TNF levels and the oxidative and fungicidal response of alveolar macrophages (AM...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2003.05.001
更新日期：2003-12-01 00:00:00
abstract：:Phocid herpesvirus virus type 2 (PhHV-2), a putative gammaherpesvirus of seals, has been isolated from harbor seals (Phoca vitulina) and grey seals (Halichoerus grypus). In the present study, different PhHV-2 isolates were shown to have a broad in vitro tropism for various cell types from several mammalian species. In...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2006.10.006
更新日期：2007-01-01 00:00:00
abstract：:Most studies of Salmonella enterica serovar Typhimurium infection focus only on the pathogenicity of one strain. We investigated whether differences in pathogenicity of two wild-type S. Typhimurium strains; DT120 and SL1344, were related to gut invasion or the resulting immune response. Oral administration of a ten-fo...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2013.08.004
更新日期：2013-11-01 00:00:00
abstract：:Anti-retroviral therapy is useful to treat human immunodeficiency virus type 1 (HIV-1)-infected individuals, but has some major problems, such as the generation of multidrug-resistant viruses. To develop a novel supplemental or alternative therapeutic for CCR5-tropic (R5) HIV-1 infection, we generated a recombinant ve...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2016.12.004
更新日期：2017-01-01 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：: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
pub_type：
doi：10.1016/j.micinf.2018.02.005
更新日期：2018-04-01 00:00:00
abstract：:Immune-mediated clearance of virus from the central nervous system (CNS) differs from that of the other organs. Mechanisms of virus control are largely dependent upon the target cell type. Although cytolytic T lymphocytes may mediate clearance of virus from glial cells, non-cytolytic mechanisms mediated by antibody an...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/s1286-4579(03)00047-9
更新日期：2003-04-01 00:00:00
abstract：:CCR5-tropic (R5) immunodeficiency virus type 1 (HIV-1) strains are highly transmissible during the early stage of infection in humans, whereas CXCR4-tropic (X4) strains are less transmissible. This study aimed to explore the basis for early phase R5 and X4 HIV-1 infection in vivo by using humanized mice dually challen...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2015.02.002
更新日期：2015-05-01 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：:Enterovirus 71 (EV71) is a neurotropic pathogen that can cause severe neural diseases and complications on infected patients. Clinical observations showed that EV71-induced immune responses may be associated with virus induced neurogenic pulmonary edema. Here reviewed studies that discovered several host molecules as ...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/j.micinf.2010.03.006
更新日期：2010-07-01 00:00:00
abstract：:The rpoB gene encoding the beta subunit of the DNA-dependent RNA polymerase was molecularly characterized by PCR amplification and DNA sequencing in 26 Brucella reference strains by using primers selected according to the B. melitensis 16 M rpoB published sequence. Comparison of the rpoB nucleotide sequence of all Bru...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2005.10.008
更新日期：2006-03-01 00:00:00
abstract：:In contrast to most gammaherpesviruses, Bovine herpesvirus 4 (BoHV-4) has a broad range of host species both in vitro and in vivo. Several in vitro studies demonstrated that some human cell lines are sensitive or even permissive to BoHV-4. These observations led to the hypothesis that cross-species transmission of BoH...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2007.08.007
更新日期：2007-11-01 00:00:00
abstract：:Lipoarabinomannans (LAMs) from mycobacteria were investigated concerning their effect on human neutrophils. Two types of LAM, the mannose-capped ManLAM from the virulent Mycobacterium tuberculosis H37Rv and the mannose-lacking AraLAM from a rapidly growing mycobacterial strain were used. Neither AraLAM nor ManLAM indu...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/s1286-4579(01)01470-8
更新日期：2001-11-01 00:00:00
abstract：:Cytolytic T-cell responses from 63 normal blood donors were monitored in a Mycobacterium bovis BCG infection system in vitro. We wanted to know whether cultured dendritic cells were capable of potentiating the cytolytic T-cell responses to M. bovis BCG. Infected cultured dendritic cells were up to ten times more effec...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/s1286-4579(99)80077-x
更新日期：1999-08-01 00:00:00
abstract：:We have previously reported that mice immunized with the mycobacterial 27-kDa lipoprotein were more susceptible to Mycobacterium tuberculosis (Mtb) challenge. We also showed that 27-kDa lipoprotein abrogated the protection afforded by the BCG vaccine when administrated together, suggesting that the 27-kDa lipoprotein ...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2006.02.011
更新日期：2006-06-01 00:00:00
abstract：:Mycoplasma arthritidis causes autoimmune arthritis in rodents. It produces a superantigen (MAM) that simultaneously activates antigen presenting cells and T cells inducing nitric oxide and cytokine release. Nitric oxide is a key inducer and regulator of the immune system activation. Here, we investigated nitric oxide ...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2008.09.010
更新日期：2008-11-01 00:00:00
abstract：:This article explores one of a citation classics in medical literature-Koch's postulates. It analyses their creation in the nineteenth century and their popularity in the twentieth century. As a genre of historiography, references to the postulates are anecdotes. In referring to a historical event that never happened,...
journal_title：Microbes and infection
pub_type： 历史文章,杂志文章,评审
doi：10.1016/j.micinf.2014.08.012
更新日期：2014-11-01 00:00:00
abstract：:This study used a murine model of type 2 diabetes (BKS.Cg-Dock7(m) +/+Lepr(db)/J mice) to investigate the inflammatory and cellular mechanisms predisposing to Burkholderia pseudomallei infection and co-morbid diabetes. Homozygous db/db (diabetic) mice developed extreme obesity, dyslipidaemia and glucose intolerance le...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2011.07.008
更新日期：2011-12-01 00:00:00
abstract：:Infection of mice with Plasmodium berghei NK65 represents a well-recognized malaria model in which infection is accompanied by an intense hepatic inflammatory response. Enzyme-inducible nitric oxide synthase is an important regulator of inflammation and leukocyte recruitment in microvessels, but these functions have y...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2013.08.001
更新日期：2013-11-01 00:00:00
abstract：:The inner ear has been regarded as an immunoprivileged site because of isolation by the blood-labyrinthine barrier. Several reports have indicated the existence of immune cells in the inner ear, but there are no reports showing immunocompetence of the cochlear tissue. In this report, we examined the potential involvem...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2013.04.008
更新日期：2013-07-01 00:00:00
abstract：:Host defense requires the maturation and release of the pro-inflammatory cytokines interleukin (IL)-1β and IL-18 and the induction of pyroptotic cell death, which depends on the activation of inflammatory Caspases within inflammasomes by innate immune cells. Several cytosolic pattern recognition receptors (PRRs) have ...
journal_title：Microbes and infection
pub_type： 杂志文章,评审
doi：10.1016/j.micinf.2013.04.001
更新日期：2013-07-01 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：: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：:This study examined the impact of concurrent parasite infections (amoebiasis, filariasis, necatoriasis) and the effect of anti-parasite treatment on cytokine and chemokine responses in singly and poly-parasitized patients. Cellular reactivity and parasite-specific Th1- and Th2-type cytokine and chemokine profiles were...
journal_title：Microbes and infection
pub_type： 杂志文章
doi：10.1016/j.micinf.2005.06.019
更新日期：2006-01-01 00:00:00
