Bacterial Lipopolysaccharide
Mostrando 1-12 de 1042 artigos, teses e dissertações.
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1. Effect of bacterial endotoxin lipopolysaccharide treatment on duck Leydig cells
Abstract This study aimed to investigate the effects of bacterial endotoxin lipopolysaccharide (LPS) on hormone production and gene expression in duck Leydig cells and its underlying mechanisms. Leydig cells were collected from 200-day-old mallard ducks and divided into five treatment groups (0, 50, 100, 200, and 400 ng/mL LPS). After treatment with LPS for
Anim. Reprod.. Publicado em: 25/11/2019
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2. Short-term high-fat diet affects macrophages inflammatory response, early signs of a long-term problem
Obesity is a chronic inflammatory disease that affects millions of people worldwide. Most studies observe the effects of a high-fat diet (HFD) in 10-12 weeks. This work investigated the effects induced by a HFD administered for 6 weeks on the nutritional status of mice and some aspects of the inflammatory response in mouse peritoneal macrophages. Male Swiss
Braz. J. Pharm. Sci.. Publicado em: 28/10/2019
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3. Compatibility of GROMOS-Derived Atomic Parameters for Lipopolysaccharide Membranes with the SPC/E Water Model and Alternative Long-Range Electrostatic Treatments Using Single Nonbonded Cutoff and Atom-Based Charge Schemes
Recent developments of GROMACS v.2016 ceased to support methodological approaches used in the development and validation of the GROMOS force field. We investigated the performance of a previously developed extension of the GROMOS force field for lipopolysaccharides to reproduce the structural dynamics of bacterial outer membrane (OM) using a single cutoff fo
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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4. Ca2+/Calmodulin-dependent kinase II delta B is essential for cardiomyocyte hypertrophy and complement gene expression after LPS and HSP60 stimulation in vitro
Inflammation plays an important role in the development of cardiovascular diseases (CVDs), suggesting that the immune system is a target of therapeutic interventions used for treating CVDs. This study evaluated mechanisms underlying inflammatory response and cardiomyocyte hypertrophy associated with bacterial lipopolysaccharide (LPS)- or heat shock protein 6
Braz J Med Biol Res. Publicado em: 15/07/2019
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5. Periapical bone response to bacterial lipopolysaccharide is shifted upon cyclooxygenase blockage
Abstract Objectives: Infection, inflammation and bone resorption are closely related events in apical periodontitis development. Therefore, we sought to investigate the role of cyclooxygenase (COX) in osteoclastogenesis and bone metabolism signaling in periapical bone tissue after bacterial lipopolysaccharide (LPS) inoculation into root canals. Methodology
J. Appl. Oral Sci.. Publicado em: 03/06/2019
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6. Exposure of periodontal ligament progenitor cells to lipopolysaccharide from Escherichia coli changes osteoblast differentiation pattern
Periodontal ligament mesenchymal stem cells (PDLMSCs) are an important alternative source of adult stem cells and may be applied for periodontal tissue regeneration, neuroregenerative medicine, and heart valve tissue engineering. However, little is known about the impact of bacterial toxins on the biological properties of PDLSMSCs, including self-renewal, di
J. Appl. Oral Sci.. Publicado em: 2015-04
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7. Neonatal lipopolysaccharide exposure induces sexually dimorphic sickness behavior in adult rats
The aim of the present study was to evaluate whether neonatal exposure to lipopolysaccharide (LPS; 50 µg/kg, i.p., on postnatal day 2) induces depressive- and/or anxiety-like effects and sexually dimorphic responses in rats challenged with LPS (100 µg/kg, i.p.) in adulthood. The results revealed that males presented a less depressive state in the forced sw
Psychol. Neurosci.. Publicado em: 2014-06
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8. Prenatal lipopolysaccharide increases maternal behavior, decreases maternal odor preference, and induces lipopolysaccharide hyporesponsiveness
The present study investigated whether late maternal inflammation disrupts the mother/pup interaction, resulting in long-lasting effects on pup behavior and alterations in biological pathways, thereby programming prepubertal behavior and the pups' inflammatory responses after bacterial endotoxin treatment. Female rats received 100 μg/kg lipopolysaccharide (
Psychol. Neurosci.. Publicado em: 2013-06
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9. Ciclooxigenase-2 modula in vivo a expressão de marcadores da osteoclastogênese e genes envolvidos no metabolismo ósseo em resposta ao lipopolissacarídeo bacteriano / Ciclooxygenase-2 modulates in vivo the expression of osteoclastiogenesis makers and genes involved in bone metabolism in response to bacterial lipopolysaccharide
During an inflammatory response, several mediators are locally released in order to stimulate cellular and humoral immune response. Through the action of cyclooxygenase and lipoxygenase enzymes structural changes occur in the arachidonic acid chain leading to synthesis of prostaglandins or leukotrienes and lipoxins, respectively. Such mediators are responsib
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/06/2012
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10. Characterization of pathogenic Aeromonas veronii bv. veronii associated with ulcerative syndrome from Chinese longsnout catfish (Leiocassis longirostris Günther)
273 bacterial strains were isolated from 20 Chinese longsnout catfish samples. The biochemical characteristics of all strains conformed to the species description of Aeromonas veronii bv. veronii on the basis of Vitek GNI+ card. Furthermore, 16S rDNA, gyrB and rpoD sequences of the representative strain PY50 were sequenced and showed high similarity with A.
Brazilian Journal of Microbiology. Publicado em: 2012-03
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11. Reduction of the amount of intestinal secretory IgA in fulminant hepatic failure
Intestinal barrier dysfunction plays an important role in spontaneous bacterial peritonitis. In the present study, changes in the intestinal barrier with regard to levels of secretory immunoglobulin A (SIgA) and its components were studied in fulminant hepatic failure (FHF). Immunohistochemistry and double immunofluorescent staining were used to detect intes
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-05
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12. Avaliação in vivo e in vitro do efeito do extrato de própolis em osso alveolar, com e sem contaminação de lipopolissacarídeo bacteriano / In vivo and in vitro effects of propolis extract on alveolar bone, with and without bacterial lipopolysaccharide contamination
A própolis é uma substância resinosa, cujas atividades antibacteriana, antiinflamatória, antiviral, fungicida, imuno estimulante, cicatrizante e de anestésico local tem sido valorizadas no uso clínico. O lipopolissacarídeo (LPS) é reconhecidamente uma endotoxina e pode induzir processos inflamatórios. Os objetivos deste trabalho foram: a) analisar i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/12/2010