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| Registros recuperados: 25 | |
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| Yang, Yinshan; Boze, Helene; Chemardin, Patrick; Padilla, Andre; Moulin, Guy; Tassanakajon, Anchalee; Pugniere, Martine; Roquet, Francoise; Destoumieux Garzon, Delphine; Gueguen, Yannick; Bachere, Evelyne; Aumelas, Andre. |
| The anti-lipopolysaccharide factor ALF-Pm3 is a 98-residue protein identified in hemocytes from the black tiger shrimp Penaeus monodon. It was expressed in Pichia pastoris from the constitutive glyceraldehyde-3-phosphate dehydrogenase promoter as a folded and N-15 uniformly labeled rALF-Pm3 protein. Its 3D structure was established by NMR and consists of three alpha-helices packed against a four-stranded beta-sheet. The C-34-C-55 disulfide bond was shown to be essential for the structure stability. By using surface plasmon resonance, we demonstrated that rALF-Pm3 binds to LPS, lipid A and to OM(R)-174, a soluble analogue of lipid A. Biophysical studies of rALF-Pm3/LPS and rALF-Pm3/OM(R)-174 complexes indicated rather high molecular sized aggregates, which... |
| Tipo: Text |
Palavras-chave: Ultracentrifugation; Surface plasmon resonance; Septic shock; Structure; NMR; Lipid A; Lipopolysaccharide; Anti lipopolysaccharide factor. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6320.pdf |
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| Xiao,Ke; Qiu,Chang-Wei; Chen,Min; Yang,Zhi; Wang,Jing; Peng,Ke-Mei; Song,Hui. |
| The histological changes in the spleen and the immunohistochemical expression of visfatin in lipopolysaccharide-stimulated piglets are reported to examine the relation between visfatin and inflammation. The results are as follows: (1) After LPS treated, the spleen displayed thicker capsules and trabecula, the thinner periarterial lymphatic sheath, and the more expandable splenic sinusoid, with an increase in the number of splenic nodules, lymphocytes, ellipsoids of the marginal zone, red blood cells and macrophagocytes. (2) Visfatin-positive cells were mainly distributed in the red pulp of the spleen, with less in splenic nodules and periarterial lymphatic sheath. In the LPS-treated group, the signal intensity and quantity of the visfatin-positive cells... |
| Tipo: Journal article |
Palavras-chave: Visfatin; Spleen; Lipopolysaccharide; Piglets. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400052 |
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| MAGATA, Fumie; ISHIDA, Yoshikazu; MIYAMOTO, Akio; FURUOKA, Hidefumi; INOKUMA, Hisashi; SHIMIZU, Takashi; 宮本, 明夫; 古岡, 秀文; 猪熊, 壽; 清水, 隆. |
| We investigated the concentration of the bacterial endotoxin lipopolysaccharide (LPS) in the blood, ovarian follicular fluid and uterine fluid of a clinical case of bovine metritis. A 2-year-old lactating Holstein cow exhibited continuous fever >39.5°C for more than 2 weeks after normal calving. The cow produced a fetid, watery, red-brown uterine discharge from the vagina and was diagnosed with metritis. The LPS concentrations in plasma and uterine fluid were 0.94 and 6.34 endotoxin units (EU)/ml, respectively. One of seven follicles showed an extremely high level of LPS (12.40 EU/ml) compared to the other follicles (0.62–0.97 EU/ml). These results might suggest the presence of high concentration of LPS in follicles in cows with postpartum metritis. |
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Palavras-chave: Dairy cow; Follicle; Lipopolysaccharide; Metritis. |
| Ano: 2015 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4043 |
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| MAGATA, Fumie; HORIUCHI, Maya; MIYAMOTO, Akio; SHIMIZU, Takashi; 宮本, 明夫; 清水, 隆. |
| In postpartum dairy cows, lipopolysaccharide (LPS) derived from gram-negative bacteria such as Escherichia coli causes uterine inflammation and leads to ovarian dysfunction. The aim of this study was to determine the effect of LPS on steroid production in bovine theca cells at different stages of follicular development. Theca cells isolated from pre- and post-selection follicles (PRFs, <8.5 mm in diameter, and POFs, >8.5 mm in diameter, respectively) of bovine ovaries were exposed to LPS under luteinizing hormone (LH) conditions, estradiol (E2) conditions or both conditions in vitro. Bovine theca cells expressed the LPS receptor gene complex: Toll-like receptor 4 (TLR4), CD14 and MD2. LPS suppressed progesterone (P4) and androstenedione (A4)... |
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Palavras-chave: Androstenedione; Dairy cow; Lipopolysaccharide; Progesterone; Theca cells. |
| Ano: 2014 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3935 |
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| Xiong,J; Qiu,H; Bi,Y; Zhou,HL; Guo,S; Ding,B. |
| ABSTRACT The objectives of this study were to investigate the effects of tributyrin (TB) and coated sodium butyrate (CSB) on intestinal morphology, disaccharidase activity and intramuscular fat of broilers challenged with lipopolysaccharide (LPS). A total of 160 1-day-old healthy Cobb broilers were randomly allocated into four groups: (1) control; (2) LPS, in which broilers were fed a basal diet and intraperitoneally injected with 500 μg/kg LPS on days 38, 40 and 42; (3) TB, in which LPS-challenged broilers were fed basal diet supplemented with 500 mg/kg TB; and (4) CSB, in which LPS-challenged broilers were fed basal diet supplemented with 877 mg/kg CSB. Addition of TB and CSB inhibited (p<0.05) the decrease in villus height in the duodenum and ileum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Coated sodium butyrate; Intestine; Lipopolysaccharide; Tributyrin. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400707 |
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| Ribeiro,M.G.; Motta,R.G.; Paes,A.C.; Allendorf,S.D.; Salerno,T.; Siqueira,A.K.; Fernandes,M.C.; Lara,G.H.B.. |
| Relata-se a ocorrência de graves sintomas de mastite hiperaguda em vaca, causada por Klebsiella pneumoniae, na terceira semana de lactação. Descrevem-se aspectos epidemiológicos, sintomas clínicos, procedimentos de diagnóstico microbiológico, conduta terapêutica e medidas de controle. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Milk; Klebsiella pneumoniae; Endotoxin; Lipopolysaccharide. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000200031 |
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| Zhao,L.L.; Hu,G.C.; Zhu,S.S.; Li,J.F.; Liu,G.J.. |
| The aim of this study was to investigate the effect of propofol pretreatment on lipopolysaccharide (LPS)-induced acute lung injury (ALI) and the role of the phosphoinositide-3-kinase/protein kinase B (PI3K/Akt) pathway in this procedure. Survival was determined 48 h after LPS injection. At 1 h after LPS challenge, the lung wet- to dry-weight ratio was examined, and concentrations of protein, tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) in bronchoalveolar lavage fluid (BALF) were determined using the bicinchoninic acid method or ELISA. Lung injury was assayed via lung histological examination. PI3K and p-Akt expression levels in the lung tissue were determined by Western blotting. Propofol pretreatment prolonged survival, decreased the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acute lung injury; Propofol; Lipopolysaccharide; PI3K/Akt pathway. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014001201062 |
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| Li,G.; Zhou,CL.; Zhou,QS.; Zou,HD.. |
| Lipopolysaccharide (LPS)-induced endotoxemia triggers the secretion of proinflammatory cytokines and can cause acute lung injury (ALI). The high mobility group box 1 (HMGB1) protein plays an important role as a late mediator of sepsis and ALI. Galantamine (GAL) is a central acetylcholinesterase inhibitor that inhibits the expression of HMGB1. This study evaluated the effects of GAL by measuring levels of inflammatory mediators and observing histopathological features associated with LPS-induced ALI. Sixty 8-10 week old male Sprague-Dawley rats (200-240 g) were randomized into three groups as follows: control group, LPS group (7.5 mg/kg LPS), and LPS+GAL group (5 mg/kg GAL before LPS administration). Histopathological examination of lung specimens obtained... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Galantamine; Acute lung injury; Lipopolysaccharide; HMGB1. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000200601 |
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| Cichy,M.C.; Rocha,F.G.G.; Tristão,V.R.; Pessoa,E.A.; Cenedeze,M.A.; Nürmberg Junior,R.; Schor,N.; Bellini,M.H.. |
| Acute renal failure (ARF) is a frequent complication of Gram-negative sepsis, with a high risk of mortality. Lipopolysaccharide (LPS)-induced ARF is associated with hemodynamic changes that are strongly influenced by the overproduction of nitric oxide (NO) through the cytokine-mediated up-regulation of inducible NO synthase. LPS-induced reductions in systemic vascular resistance paradoxically culminate in renal vasoconstriction. Collagen XVIII is an important component of the extracellular matrix expressed in basement membranes. Its degradation by matrix metalloproteases, cathepsins and elastases results in the formation of endostatin, claimed to have antiangiogenic activity and to be a prominent vasorelaxing agent. We evaluated the expression of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acute renal failure; Lipopolysaccharide; Gene expression; Endostatin; CD31. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001200005 |
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| Erdenechimeg,Ch.; Guiqide,A.; Dejidmaa,B.; Chimedragchaa,Ch.; Purevsuren,S.. |
| Lider-7-tang, a medicine used for the treatment of respiratory diseases especially pneumonia and fever in Mongolian Traditional Medicine, was selected for this phytochemical and pharmacological study. The objectives of the study were to determine total biological active substances and analyze the effects of Lider-7-tang treatment in rats with acute lung injury (ALI). Quantitative determination of the total active constituents (phenolic, flavonoid, iridoid and alkaloid) of the methanol extract of Lider-7-tang was performed using Folin-Ciocalteu reagent, aluminum chloride reagent, Trim-Hill reagent, and Bromocresol green reagent, respectively. A total of fifty 8–10-week-old male Wistar rats (200–240 g) were randomized into three groups: control group,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Traditional medicine; Lider-7-tang; Phenolic; Acute lung injury; Lipopolysaccharide. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001200609 |
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| Barbosa de Oliveira,L.C.; Rocha Oliveira,C.J.; Fries,D.M.; Stern,A.; Monteiro,H.P.. |
| Previous studies have shown that exogenously generated nitric oxide (NO) inhibits smooth muscle cell proliferation. In the present study, we stimulated rabbit vascular smooth muscle cells (RVSMC) with E. coli lipopolysaccharide (LPS), a known inducer of NO synthase transcription, and established a connection between endogenous NO, phosphorylation/dephosphorylation-mediated signaling pathways, and DNA synthesis. Non-confluent RVSMC were cultured with 0, 5, 10, or 100 ng/ml of the endotoxin. NO release was increased by 86.6% (maximum effect) in low-density cell cultures stimulated with 10 ng/ml LPS as compared to non-stimulated controls. Conversely, LPS (5 to 100 ng/ml) did not lead to enhanced NO production in multilayered (high density) RVSMC. DNA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitric oxide; Lipopolysaccharide; Protein tyrosine phosphatases; Mitogen-activated protein kinases; DNA synthesis; Cell density. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000200006 |
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| Inada,T.; Hamano,N.; Yamada,M.; Shirane,A.; Shingu,K.. |
| Gastrointestinal motility disturbances during endotoxemia are probably caused by lipopolysaccharide (LPS)-induced factors: candidates include nitric oxide (NO), tumor necrosis factor-alpha (TNF-alpha), interleukin-1ß, and interleukin-6. Flow cytometry was used to determine the effects of LPS and these factors on gastric emptying (evaluated indirectly by determining percent gastric retention; %GR) and gastrointestinal transit (GIT) in male BALB/c mice (23-28 g). NO (300 µg/mouse, N = 8) and TNF-alpha (2 µg/mouse, N = 7) increased (P < 0.01) GR and delayed GIT, mimicking the effect of LPS (50 µg/mouse). During early endotoxemia (1.5 h after LPS), inhibition of inducible NO synthase (iNOS) by a selective inhibitor, 1400 W (150 µg/mouse, N = 11), but not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endotoxin; Inducible nitric oxide synthase; Tumor necrosis factor-alpha; Gastric emptying; Gastrointestinal transit; Lipopolysaccharide. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006001100006 |
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| Zhao,Z.G.; Zhang,L.L.; Niu,C.Y.; Zhang,J.. |
| The liver is one of the target organs damaged by septic shock, wherein the spread of endotoxins begins. This study aimed to investigate the effects of exogenous normal lymph (ENL) on lipopolysaccharide (LPS)-induced liver injury in rats. Male Wistar rats were randomly divided into sham, LPS, and LPS+ENL groups. LPS (15 mg/kg) was administered intravenously via the left jugular vein to the LPS and LPS+ENL groups. At 15 min after the LPS injection, saline or ENL without cell components (5 mL/kg) was administered to the LPS and LPS+ENL groups, respectively, at a rate of 0.5 mL/min. Hepatocellular injury indices and hepatic histomorphology, as well as levels of P-selectin, intercellular adhesion molecule 1 (ICAM-1), myeloperoxidase (MPO), and Na+-K+-ATPase,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Exogenous normal lymph; Lipopolysaccharide; Liver injury; Intercellular adhesion molecule 1; Myeloperoxidase; Na+-K+-ATPase. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000200128 |
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| Fock,R.A.; Vinolo,M.A.R.; Blatt,S.L.; Borelli,P.. |
| The objectives of this study were to determine if protein-energy malnutrition (PEM) could affect the hematologic response to lipopolysaccharide (LPS), the interleukin-1β (IL-1β) production, leukocyte migration, and blood leukocyte expression of CD11a/CD18. Two-month-old male Swiss mice were submitted to PEM (N = 30) with a low-protein diet (14 days) containing 4% protein, compared to 20% protein in the control group (N = 30). The total cellularity of blood, bone marrow, spleen, and bronchoalveolar lavage evaluated after the LPS stimulus indicated reduced number of total cells in all compartments studied and different kinetics of migration in malnourished animals. The in vitro migration assay showed reduced capacity of migration after the LPS stimulus in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blood; Bone marrow; Spleen; Interleukin-1β; Lipopolysaccharide; Malnutrition. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012001200009 |
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| Registros recuperados: 25 | |
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