Search results for "Brasilien"

Combined phylogenetic and morphometric information to delimit and unify the Triatoma brasiliensis species complex and the Brasiliensis subcomplex

2017

Made available in DSpace on 2018-12-11T16:46:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-06-01 “Triatoma brasiliensis species complex” was defined as a monophyletic group of the species: T. brasiliensis, T. juazeirensis, T. melanica, and T. sherlocki. An alternative grouping scheme proposed the concept of “Brasiliensis subcomplex” which included the former species together with T. melanocephala, T. petrocchiae, T. lenti, T. tibiamaculata, and T. vitticeps. To evaluate the relationship among these taxa we combined the results obtained with four mitochondrial genes (12S, 16S, COI and Cytb, adding to 1811 bp) and geometric morphometric analysis of wings and heads. Panstrongylus m…

First survey on zoonotic helminthosis in urban brown rats (Rattus norvegicus) in Spain and associated public health considerations.

2018

Abstract The brown rat, Rattus norvegicus, with a worldwide distribution, is the most commensal species among synanthropic rodents, since its main habitat, in urban as well as in rural areas, is always linked to humans. Therefore, people living in close proximity to rodent populations can be exposed to infection. Whereas bacteria and viruses are the best known rat-associated zoonoses in urban environments, the role of brown rats as reservoirs for helminth parasites and the associated risk for humans are less well known. Specifically, this role has not been analyzed in Spain to date. A total of 100 R. norvegicus trapped in the sewage system (n = 85), and parks (n = 15) of Barcelona was exami…

Erläuterungen zur Fauna Brasiliens: enthaltend Abbildungen und ausführliche Beschreibungen neuer oder ungenügend bekannter Thier Arten

1856

Breizacanthus aznari sp. n. (Acanthocephala: Arhythmacanthidae) from the banded cusk-eel Raneya brasiliensis (Ophidiiformes: Ophidiidae) from the Pat…

2012

Breizacanthus aznari sp. n. is described from the banded cusk-eel Raneya brasiliensis (Kaup) (Ophidiiformes: Ophidiidae) from the Patagonian coast in Argentina. Breizacanthus Golvan, 1969 is currently composed of five species (including the new species) and is characterised by the absence of trunk spines, a short cylindrical proboscis with two types of hooks and lemnisci longer than the proboscis receptacle. Breizacanthus aznari is clearly distinguished from B. chabaudi Golvan, 1969 by having 12 longitudinal rows of hooks on the proboscis, instead of 16-18. The new species resembles B. golvani Gaevskaya et Shukhgalter, 1984, B. irenae Golvan, 1969, and B. ligur Paggi, Orecchia et Della Seta…

MyD88 is dispensable for resistance toParacoccidioides brasiliensisin a murine model of blood-borne disseminated infection

2008

We have studied the role of MyD88, an adaptor protein of Toll-like receptors (TLRs), in murine defenses against Paracoccidioides brasiliensis in a model of blood-borne disseminated infection. Wild-type (WT) and MyD88-deficient mice infected intravenously with P. brasiliensis yeast cells showed an equivalent fungal burden, as well as similar levels of proinflammatory IL-1beta, IL-6, IL-12p70, tumor necrosis factor (TNF)-alpha and MIP-2, T-helper type 1 (Th1) (IFN-gamma) and Th2 cytokines (IL-4) in tissue homogenates. In vitro production of TNF-alpha, IFN-gamma and IL-12p70, by antigen-stimulated splenocytes from infected animals, was also similar in both types of mice; this production of Th1…

Inhibition of Lymphocyte Proliferation during Parasitic Infection with Nippostrongylus Brasiliensis

1979

It is now well established that parasitic infections can lead to the production of high titers of IgE anti parasitic antibodies in experimental animals and in man (1,2). One of the best studied experimental systems involves the ability of the nematode parasite Nippostrongylus brasiliensis (N.B.) to stimulate a high titer reaginic antibody response to worm antigens in the rat. These studies were extended by the reports of Orr and Blair that parasitic infections can cause non specific proliferation of IgE antibody response against antigens unrelated to those of the parasite (3). The amplification of an already existing IgE antibody response can be induced before infection by inoculating the a…

IL-27 enhances the lymphocyte mediated innate resistance to primary hookworm infection in the lungs

2020

AbstractInterleukin-27 (IL-27) is a heterodimeric cytokine of the IL-12 family, formed by non-covalent association of the promiscuous EBI3 subunit and selective p28 subunit. IL-27 is produced by mononuclear phagocytes and unfolds pleiotropic immune-modulatory functions through high affinity ligation to IL-27 receptor alpha (IL-27RA). While IL-27 is known to contribute to immunity and to end inflammation following numerous types of infections, its relevance for host defense against multicellular parasites is still poorly defined. Here, we investigated the role of IL-27 during infection with the soil-transmitted hookworm, Nippostrongylus brasiliensis, in its early intrapulmonary life cycle. I…

Der Zerfall des Schriftdeutschen im Estado Novo?

2017

Zusammenfassung Der folgende Beitrag beschäftigt sich mit Sprechern des Hunsrückischen in Brasilien und deren Gebrauch des Schriftdeutschen im 20. Jahrhundert. Basis der Analyse ist ein Korpus von Privatbriefen, die während der ersten Diktatur geschrieben wurden. Der Fokus der Analyse ist die Frage nach einer uniformen Schriftnorm für diese Sprechergruppe, deren Muttersprache fast ausschließlich mündlich verwendet wurde. Es wird argumentiert, dass der Estado Novo nicht die einzige Ursache für den Dachsprachenwechsel vom Deutschen zum Portugiesischen war, jedoch entscheidend dazu beigetragen hat, dass die Etablierung einer brasilianischen Schriftnorm des Deutschen endgültig verhindert wurde.…