keyword
MENU ▼
Read by QxMD icon Read
search

endotoxin

keyword
https://www.readbyqxmd.com/read/28637341/assessment-of-workers-exposure-to-grain-dust-and-bioaerosols-during-the-loading-of-vessels-hold-an-example-at-a-port-in-the-province-of-qu%C3%A3-bec
#1
Geneviève Marchand, Marie Gardette, Kiet Nguyen, Valérie Amano, Eve Neesham-Grenon, Maximilien Debia
Longshoremen are exposed to large amounts of grain dust while loading of grain into the holds of vessels. Grain dust inhalation has been linked to respiratory diseases such as chronic bronchitis, hypersensitivity, pneumonitis, and toxic pneumonitis. Our objective was to characterize the exposure of longshoremen to inhalable and total dust, endotoxins, and cultivable bacteria and fungi during the loading of grain in a vessel's hold at the Port of Montreal in order to assess the potential health risks. Sampling campaigns were conducted during the loading of two different types of grain (wheat and corn)...
June 15, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28636953/dicer-deficiency-differentially-impacts-microglia-of-the-developing-and-adult-brain
#2
Diana Varol, Alexander Mildner, Thomas Blank, Anat Shemer, Neta Barashi, Simon Yona, Eyal David, Sigalit Boura-Halfon, Yifat Segal-Hayoun, Louise Chappell-Maor, Hadas Keren-Shaul, Dena Leshkowitz, Eran Hornstein, Martin Fuhrmann, Ido Amit, Nicola Maggio, Marco Prinz, Steffen Jung
Microglia seed the embryonic neuro-epithelium, expand and actively sculpt neuronal circuits in the developing central nervous system, but eventually adopt relative quiescence and ramified morphology in the adult. Here, we probed the impact of post-transcriptional control by microRNAs (miRNAs) on microglial performance during development and adulthood by generating mice lacking microglial Dicer expression at these distinct stages. Conditional Dicer ablation in adult microglia revealed that miRNAs were required to limit microglial responses to challenge...
June 20, 2017: Immunity
https://www.readbyqxmd.com/read/28633290/planning-evaluating-and-vetting-receptor-signaling-studies-to-assesshyaluronan-size-dependence-and-specificity
#3
Paul H Weigel
Exciting discoveries in many diverse fields of hyaluronan (HA) biology over the last 40 years have centered around the ability of HA to bind cell surface HA receptors (e.g. CD44, Layilin, LYVE-1, HARE/Stab2 and RHAMM) and sometimes also to activate intracellular signal transduction pathways, frequently involving ERK1/2. Though perplexing, a major characteristic of HA-mediated signal pathway activation for some receptors has been a dependence on the size of the bound HA. Receptors that directly interact with HA, which may not include TLR2/4, bind very well to any HA molecule > 8-20 sugars, depending on the receptor...
June 13, 2017: Glycobiology
https://www.readbyqxmd.com/read/28630253/cold-induced-thermogenesis-and-inflammation-associated-cold-seeking-behavior-are-represented-by-different-dorsomedial-hypothalamic-sites-a-three-dimensional-functional-topography-study-in-conscious-rats
#4
Samuel P Wanner, M Camila Almeida, Yury P Shimansky, Daniela L Oliveira, Justin R Eales, Cândido C Coimbra, Andrej A Romanovsky
In the past, we showed that large electrolytic lesions of the dorsomedial hypothalamus (DMH) promoted hypothermia in cold-exposed restrained rats, but attenuated hypothermia in rats challenged with a high dose of bacterial lipopolysaccharide (LPS) in a thermogradient apparatus. The goal of this study was to identify the thermoeffector mechanisms and DMH representation of the two phenomena and, hence, understand how the same lesion could produce two opposite effects on body temperature. We found that the permissive effect of large electrolytic DMH lesions on cold-induced hypothermia was due to suppressed thermogenesis...
June 19, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28630139/functional-interfaces-between-ticam-2-tram-and-ticam-1-trif-in-tlr4-signaling
#5
REVIEW
Kenji Funami, Misako Matsumoto, Hiroyuki Oshiumi, Fuyuhiko Inagaki, Tsukasa Seya
Toll-like receptor 4 (TLR4) recognizes lipopolysaccharide (LPS), produces pro-inflammatory cytokines and type I interferons, and associates with a trigger of endotoxin shock. TLR4 is interacted with a TIR domain-containing adaptor molecule-2 (TICAM-2)/TRAM [TRIF (TIR domain-containing adaptor-inducing interferon-β)-related adaptor molecule] via its Toll-interleukin-1 receptor homology (TIR) domain. TICAM-2 acts as a scaffold protein and activates TIR domain-containing adaptor molecule-1 (TICAM-1)/TRIF. According to the structural analysis by NMR, TICAM-2 interacts with TICAM-1 by the acidic amino acids motif, E87/D88/D89...
June 19, 2017: Biochemical Society Transactions
https://www.readbyqxmd.com/read/28628948/platelet-hyperaggregability-is-associated-with-decreased-adamts13-activity-and-enhanced-endotoxemia-in-patients-with-acute-cholangitis
#6
Hiroaki Takaya, Hideto Kawaratani, Takuya Kubo, Kenichiro Seki, Yasuhiko Sawada, Kosuke Kaji, Yasushi Okura, Kosuke Takeda, Mitsuteru Kitade, Kei Moriya, Tadashi Namisaki, Akira Mitoro, Masanori Matsumoto, Hiroshi Fukui, Hitoshi Yoshiji
AIM: Insufficient ADAMTS13 activity (ADAMTS13:AC) leads to increased levels of unusually large von Willebrand factor (VWF) multimers and causes microcirculatory disturbance and multiple organ failure (MOF). Endotoxin (Et) triggers the activation of coagulation and cytokine cascades, leading to MOF in severe inflammatory response syndrome (SIRS). Here, we investigated the potential role of endotoxemia-related ADAMTS13 in acute cholangitis. METHODS: Twenty-four patients with acute cholangitis, including 7 with severe acute cholangitis, were recruited in this study...
June 19, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28627645/therapeutic-strategies-for-alcoholic-liver-disease-focusing-on-inflammation-and-fibrosis-review
#7
Hideto Kawaratani, Kei Moriya, Tadashi Namisaki, Masakazu Uejima, Mitsuteru Kitade, Kousuke Takeda, Yasushi Okura, Kousuke Kaji, Hiroaki Takaya, Norihisa Nishimura, Shinya Sato, Yasuhiko Sawada, Kenichiro Seki, Takuya Kubo, Akira Mitoro, Junichi Yamao, Hitoshi Yoshiji
Excessive alcohol consumption is the most common cause of liver disease in the world. Chronic alcohol abuse leads to liver damage, liver inflammation, fibrosis and hepatocellular carcinoma. Inflammatory cytokines, such as tumor necrosis factor-α and interferon-γ, induce liver injury, which leads to the develo-pment of alcoholic liver disease (ALD). Hepatoprotective cytokines, such as interleukin (IL)-6 and IL-10, are also associated with ALD. IL-6 improves ALD via the activation of STAT3 and the subsequent induction of a variety of hepatoprotective genes in hepatocytes...
June 9, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28626833/the-lung-is-a-host-defense-niche-for-immediate-neutrophil-mediated-vascular-protection
#8
Bryan G Yipp, Jung Hwan Kim, Ronald Lima, Lori D Zbytnuik, Björn Petri, Nick Swanlund, May Ho, Vivian G Szeto, Tamar Tak, Leo Koenderman, Peter Pickkers, Anton T J Tool, Taco W Kuijpers, Timo K van den Berg, Mark R Looney, Matthew F Krummel, Paul Kubes
Bloodstream infection is a hallmark of sepsis, a medically emergent condition requiring rapid treatment. However, upregulation of host defense proteins through toll-like receptors and NFκB requires hours after endotoxin detection. Using confocal pulmonary intravital microscopy, we identified that the lung provides a TLR4-Myd88-and abl tyrosine kinase-dependent niche for immediate CD11b-dependent neutrophil responses to endotoxin and Gram-negative bloodstream pathogens. In an in vivo model of bacteremia, neutrophils crawled to and rapidly phagocytosed Escherichia coli sequestered to the lung endothelium...
April 28, 2017: Science Immunology
https://www.readbyqxmd.com/read/28625263/-bacterial-endotoxin-induced-endothelial-cell-injury-and-calcium-overload-associated-with-toll-like-receptor-and-calcium-signal
#9
Jianguo Xiao, Qing Song, Tanshi Li, Rongju Sun
OBJECTIVE: To explore the effect of toll-like receptor 4 (TLR4), myeloid differentiation protein-2 (MD2), and stromal interaction molecular 1 (STIM1) for regulating human vascular endothelial calcium overload injury and inflammatory reaction induced by bacterial endotoxin (LPS). METHODS: Human umbilical vein endothelial cells (HUVECs) were cultured in Dulbecco's modification of Eagle's medium (DMEM). (1) The levels of TLR4, MD2 and nuclear factor-κB (NF-κB) were detected by reverse transcriotion-polymerase chain reaction (RT-PCR) before and 0...
February 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28622363/acyloxyacyl-hydrolase-promotes-the-resolution-of-lipopolysaccharide-induced-acute-lung-injury
#10
Benkun Zou, Wei Jiang, Han Han, Jing Li, Weiying Mao, Zihui Tang, Qian Yang, Guojun Qian, Jing Qian, Wenjiao Zeng, Jie Gu, Tianqing Chu, Ning Zhu, Wenhong Zhang, Dapeng Yan, Rui He, Yiwei Chu, Mingfang Lu
Pulmonary infection is the most common risk factor for acute lung injury (ALI). Innate immune responses induced by Microbe-Associated Molecular Pattern (MAMP) molecules are essential for lung defense but can lead to tissue injury. Little is known about how MAMP molecules are degraded in the lung or how MAMP degradation/inactivation helps prevent or ameliorate the harmful inflammation that produces ALI. Acyloxyacyl hydrolase (AOAH) is a host lipase that inactivates Gram-negative bacterial endotoxin (lipopolysaccharide, or LPS)...
June 16, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28622357/protective-effect-of-aplysin-on-liver-tissue-and-the-gut-microbiota-in-alcohol-fed-rats
#11
Meilan Xue, Ying Liu, Rui Lyu, Na Ge, Man Liu, Yan Ma, Hui Liang
BACKGROUND: This study investigated the protective effect of aplysin on the liver and its influence on inflammation and the gut microbiota in rats with ethanol-induced liver injury. METHODS: Male Sprague-Dawley rats were randomly assigned to an alcohol-containing liquid diet, control liquid diet or treatment with aplysin for 8 weeks. Hepatic and intestinal histopathological analysis was performed, and cytokine levels and the intestinal mucosal barrier were assessed...
2017: PloS One
https://www.readbyqxmd.com/read/28621836/-dietary-advanced-glycation-end-products-modify-gut-microbial-composition-and-partially-increase-colon-permeability-in-rats
#12
Wanting Qu, Xiaojin Yuan, Jinsong Zhao, Yingxiao Zhang, Jing Hu, Jiawei Wang, Juxiu Li
SCOPE: The adverse impacts of dietary advanced glycation end products (AGEs) on health are currently of interest. These compounds are inevitably formed during thermal food processing and make foods less digestible because of protein cross-linking. This study examined not only whether dietary AGEs alter cecal microbiota and their metabolites but also their effects on colon permeability. METHODS AND RESULTS: Sprague-Dawley rats were exposed to a high-AGEs diet (AGEs content was increased by heating food at 125°C/3 h) for 6, 12, or 18 weeks...
June 16, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28620220/coupling-killing-to-neutralization-combined-therapy-with-ceftriaxone-pep19-2-5-counteracts-sepsis-in-rabbits
#13
Sergio Bárcena-Varela, Guillermo Martínez-de-Tejada, Lukas Martin, Tobias Schuerholz, Ana Gloria Gil-Royo, Satoshi Fukuoka, Torsten Goldmann, Daniel Droemann, Wilmar Correa, Thomas Gutsmann, Klaus Brandenburg, Lena Heinbockel
Sepsis, which is induced by severe bacterial infections, is a major cause of death worldwide, and therapies combating the disease are urgently needed. Because many drugs have failed in clinical trials despite their efficacy in mouse models, the development of reliable animal models of sepsis is in great demand. Several studies have suggested that rabbits reflect sepsis-related symptoms more accurately than mice. In this study, we evaluated a rabbit model of acute sepsis caused by the intravenous inoculation of Salmonella enterica...
June 16, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28619613/does-supplemental-photodynamic-therapy-optimize-the-disinfection-of-bacteria-and-endotoxins-in-one-visit-and-two-visit-root-canal-therapy-a-randomized-clinical-trial
#14
Diego G D Rabello, Bruna J M Corazza, Luciana L Ferreira, Mauro P Santamaria, Ana P M Gomes, Frederico C Martinho
AIM: to evaluate the effectiveness of supplemental photodynamic therapy (PDT) in optimizing the removal of bacteria and endotoxins from primarily infected root canals after one-visit and two-visit treatments. METHODOLOGY: Twenty-four primarily infected root canals with apical periodontitis were selected and randomly divided into one-visit (n=12) and two-visit treatment groups (n=12). Chemo-mechanical preparation (CMP) was performed by using the single-file reciprocating technique+2...
June 12, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28618763/comparison-of-endothelin-and-nitric-oxide-synthase-blockers-on-hemorheological-parameters-in-endotoxemic-rats
#15
Neslihan H Dikmenoğlu Falkmarken, Okan Arihan, Alper B Iskit
BACKGROUND/AIM: Septic shock is an important health problem that vastly alters cardiovascular and hemodynamic status. Increased production of nitric oxide (NO) and endothelin is a counterpart of this endotoxemic state. This study was conducted to test the hypothesis that nonselective NO synthesis blocker (L-NAME), inducible NO synthesis blocker (L-canavanine), or endothelin receptor antagonist (bosentan) will reverse the effects of sepsis on hemorheological parameters. MATERIALS AND METHODS: Forty-eight male Sprague-Dawley rats were used in 8 groups: saline (control), endotoxin, bosentan, L-NAME, L-canavanine, endotoxin + bosentan, endotoxin + L-NAME, and endotoxin + L-canavanine...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28613978/increased-humoral-immunity-by-dna-vaccination-using-an-%C3%AE-tocopherol-based-adjuvant
#16
Ingrid Karlsson, Marie Borggren, Jens Nielsen, Dennis Christensen, Jim Williams, Anders Fomsgaard
DNA vaccines induce broad immunity, which involves both humoral and strong cellular immunity, and can be rapidly designed for novel or evolving pathogens such as influenza. However, the humoral immunogenicity in humans and higher animals has been suboptimal compared with that of traditional vaccine approaches. We tested whether the emulsion-based and α-tocopherol containing adjuvant Diluvac Forte® has the ability to enhance the immunogenicity of a naked DNA vaccine (i.e., plasmid DNA). As a model vaccine, we used plasmids encoding both a surface-exposed viral glycoprotein (hemagglutinin) and an internal non-glycosylated nucleoprotein in the Th1/Th2 balanced CB6F1 mouse model...
June 14, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28612571/-correlation-between-serum-concentrations-of-catecholamines-and-oxygen-index-in-acute-aortic-dissection
#17
Hong Qian, Lei Du, Jing-Xiu Fan, Hui Yu, Er-Yong Zhang, Jia Hu
OBJECTIVES: To explore whether the serum concentration of adrenaline (AD) and noradrenaline (NA) elevate and its correlation with oxygenation index (OI) in the patients of acute aortic dissection (AAD). METHODS: From April 2013 to December 2013, clinical data were collected from three groups of patients (38 cases of AAD in Group A, 28 cases of ascending aortic aneurysm in Group B, and 22 cases of angina in Group C). All patients received the measurement of serum concentrations of AD, NA and endotoxin (ET)...
January 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28611755/efficacy-of-phage-therapy-in-controlling-rabbit-colibacillosis-and-changes-in-cecal-microbiota
#18
Jian Zhao, Yan Liu, Chenwen Xiao, Shaojie He, Huochun Yao, Guolian Bao
Phage therapy is a valid weapon that we could use to fight against pathogens. Bacteriophages kill bacteria and self-proliferate in the digestive tract. Furthermore, it was assumed that phage therapy could preserve the existing gut microbiota. In this study, 45 rabbits were equally divided into three groups after they were orally inoculated with pathogenic Escherichia coli to induce gut infection. Each group was treated with bacteriophage ZRP1 (Group P), ciprofloxacin lactate (Group A), or phosphate-buffered solution (PBS) (Group N)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28611461/jnk-activation-turns-on-lps-and-gram-negative-bacteria-induced-nadph-oxidase-dependent-suicidal-netosis
#19
Meraj A Khan, Armin Farahvash, David N Douda, Johann-Christoph Licht, Hartmut Grasemann, Neil Sweezey, Nades Palaniyar
Neutrophils cast neutrophil extracellular traps (NETs) to ensnare microbial pathogens. Nevertheless, the molecular rheostats that regulate NETosis in response to bacteria are not clearly established. We hypothesized that stress-activated protein kinase or c-Jun N-terminal Kinase (SAPK/JNK) is a molecular switch that turns on NETosis in response to increasing concentrations of lipopolysaccharide (LPS)- and Gram-negative bacteria. Here we show that Escherichia coli LPS (0111:B4; 10-25 μg/ml), but not phorbol myristate acetate (PMA), activates JNK in human neutrophils in a dose-dependent manner...
June 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28611436/antibacterial-and-detoxifying-activity-of-nz17074-analogues-with-multi-layers-of-selective-antimicrobial-actions-against-escherichia-coli-and-salmonella-enteritidis
#20
Na Yang, Xuehui Liu, Da Teng, Zhanzhan Li, Xiumin Wang, Ruoyu Mao, Xiao Wang, Ya Hao, Jianhua Wang
NZ17074 (N1), an arenicin-3 derivative isolated from the lugworm, has potent antibacterial activity and is cytotoxic. To reduce its cytotoxicity, seven N1 analogues with different structures were designed by changing their disulfide bonds, hydrophobicity, or charge. The "rocket" analogue-N2 and the "kite" analogue-N6 have potent activity and showed lower cytotoxicity in RAW264.7 cells than N1. The NMR spectra revealed that N1, N2, and N6 adopt β-sheet structures stabilized by one or two disulfide bonds. N2 and N6 permeabilized the outer/inner membranes of E...
June 13, 2017: Scientific Reports
keyword
keyword
54346
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"