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https://www.readbyqxmd.com/read/29766791/immunometabolic-changes-in-hepatocytes-arising-from-obesity-and-the-practice-of-physical-exercise
#1
Paula Alves Monteiro, Wagner Prado, Thiago Ricardo Dos Santos Tenório, Luciane Magri Tomaz, David H St-Pierre, Fabio Santos Lira
Over the recent years, a particular interest was shown towards understanding the roles of excessive hepatic fat accumulation and the development of obesity-related diseases. While hepatic triacylglycerol accumulation seems to be a response to the systemic increase of insulin release, fatty acid metabolites contribute to the progression of non-alcoholic fatty liver disease (NAFLD) to non-alcoholic steatohepatitis (NASH). It is widely accepted that NAFLD is a polygenic and multifactorial disease under the influence of critical behavioral factors such as overeating and sedentary lifestyles...
May 14, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29763644/immunomodulatory-effect-of-celecoxib-on-hmgb1-tlr4-pathway-in-a-recurrent-seizures-model-in-immature-rats
#2
Mariana Morales-Sosa, Sandra Orozco-Suárez, AngélicaVega-García, Sara Caballero-Chacón, Iris A Feria-Romero
Epileptic seizures constitute an important problem in pediatric neurology during the developmental period. The frequency and nosological significance of seizures, as well as their association with epileptogenesis, may be related to underlying mechanisms such as neuroinflammation. Those mechanisms of response activate inflammatory molecules induced in the neurons, activated glial cells and endothelial cells via the key HMGB1/TLR4 pathway. In this study, the drug celecoxib (CCX) was used as a blocker of the cyclooxygenase 2 (COX-2) and HMGB1/TLR-4 pathways...
May 12, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29743985/andrographolide-ameliorates-liver-fibrosis-in-mice-involvement-of-tlr4-nf-%C3%AE%C2%BA-b-and-tgf-%C3%AE-1-smad2-signaling-pathways
#3
Liteng Lin, Rui Li, Mingyue Cai, Jingjun Huang, Wensou Huang, Yongjian Guo, Liuhong Yang, Guizhi Yang, Tian Lan, Kangshun Zhu
Liver fibrosis is characterized by activated hepatic stellate cells (HSC) and extracellular matrix accumulation. Blocking the activation of HSC and the inflammation response are two major effective therapeutic strategies for liver fibrosis. In addition to the long history of using andrographolide (Andro) for inflammatory disorders, we aimed at elucidating the pharmacological effects and potential mechanism of Andro on liver fibrosis. In this study, liver fibrosis was induced by carbon tetrachloride (CCl4 ) and the mice were intraperitoneally injected with Andro for 6 weeks...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29742464/gastrointestinal-microbiota-and-mucosal-immune-gene-expression-in-neonatal-pigs-reared-in-a-cross-fostering-model
#4
Nidia Maradiaga, Brian Aldridge, Mohamed Zeineldin, James Lowe
Cross fostering is employed to equalize the number of piglet between litters ensuring colostrum intake for their survival and growth. However, little is known about the impact of cross fostering on the intestinal microbiota and mucosal immune gene expression of the neonatal pig. The objective of this study was to determine the influence of maternal microbial communities on the gastrointestinal (GI) microbiota and mucosal immune gene expression in young pigs reared in a cross-fostering model. Piglets were given high quality colostrum from birth dam or foster dam upon birth...
May 6, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29734352/role-of-matrix-metalloproteinases-2-and-9-toll-like-receptor-4-and-platelet-leukocyte-aggregate-formation-in-sepsis-associated-thrombocytopenia
#5
Caroline M Larkin, Nadhim Kamil Hante, Eamon P Breen, Krzysztof A Tomaszewski, Simon Eisele, Marek W Radomski, Thomas A Ryan, Maria-Jose Santos-Martinez
BACKGROUND: The development of thrombocytopenia in sepsis is a poor prognostic indicator associated with a significantly increased mortality risk. Mechanisms underlying this phenomenon remain to be clearly elucidated. Matrix metalloproteinases (MMPs) are enzymes that regulate the turnover of the extra-cellular matrix. MMP-2 is recognised as a platelet agonist with MMP-9 proposed as an inhibitor of platelet activation. The existence of MMP-9 in platelets is a subject of debate. There is limited evidence thus far to suggest that toll-like receptor 4 (TLR-4) and platelet-leukocyte aggregate (PLA) formation may be implicated in the development of sepsis-associated thrombocytopenia...
2018: PloS One
https://www.readbyqxmd.com/read/29722563/damage-associated-molecular-patterns-damps-in-resuscitated-hemorrhagic-shock-are-mitigated-by-peritoneal-fluid-administration
#6
Paul J Matheson, Mark A Eid, Matthew A Wilson, Victoria S Graham, Samuel A Matheson, Jessica Lee Weaver, Cynthia D Downard, Jason W Smith
INTRODUCTION: Conventional resuscitation (CR) of hemorrhagic shock (HS), a significant cause of trauma mortality, is I.V. blood and fluids. CR restores central hemodynamics, but vital organ flow can drop causing hypoperfusion, hypoxia, Damage-Associated Molecular Patterns (DAMPs), and remote organ dysfunction (i.e., lung). CR plus Direct Peritoneal Resuscitation (DPR) prevents intestinal and hepatic hypoperfusion. We hypothesized that DPR prevents lung injury in HS/CR by altering DAMPs...
May 3, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29720937/the-nlrp3-caspase-1-inflammasome-negatively-regulates-autophagy-via-tlr4-trif-in-prion-peptide-infected-microglia
#7
Mengyu Lai, Hao Yao, Syed Zahid Ali Shah, Wei Wu, Di Wang, Ying Zhao, Lu Wang, Xiangmei Zhou, Deming Zhao, Lifeng Yang
Prion diseases are neurodegenerative disorders characterized by the accumulation of misfolded prion protein, spongiform changes in the brain, and brain inflammation as a result of the wide-spread activation of microglia. Autophagy is a highly conserved catabolic process for the clearance of cytoplasmic components, including protein aggregates and damaged organelles; this process also eliminates pathological PrPSc as it accumulates during prion infection. The NALP3 inflammasome is a multiprotein complex that is a component of the innate immune system and is responsible for the release of pro-inflammatory cytokines...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29701903/impact-of-mir-140-deficiency-on-non-alcoholic-fatty-liver-disease
#8
Benjamin Wolfson, Pang-Kuo Lo, Yuan Yao, Linhao Li, Hongbing Wang, Qun Zhou
SCOPE: Loss of miR-140 has a pro-fibrotic effect in the mammary gland. This study aimed to investigate whether miR-140 loss and obesity act synergistically to promote non-alcoholic fatty liver disease, and to identify the underlying mechanisms. METHODS AND RESULTS: Liver tissues were isolated from lean-fat diet and high-fat diet fed wild-type and miR-140 knockout mice. Using molecular staining and immunohistochemistry techniques we identified increased development of non-alcoholic fatty liver disease (NAFLD) and fibrotic indicators in miR-140 knockout mice...
April 27, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29701288/cytokine-expression-profile-in-the-bone-anchored-hearing-system-12-week-results-from-a-prospective-randomized-controlled-study
#9
Tim George Ate Calon, Joost van Tongeren, Omar Omar, Martin Lars Johansson, Robert-Jan Stokroos
OBJECTIVE: To study the effect of implanting the percutaneous bone-anchored hearing system (BAHS) itself and inflammation of the peri-abutment skin warrant clarification. In this study, we aimed to acquire further insight into the immune responses related to BAHS surgery and peri-implant skin inflammation. MATERIALS AND METHODS: During surgery and 12 weeks post-implantation, skin biopsies were obtained. If applicable, additional biopsies were taken during cases of inflammation...
April 27, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29698474/interferon-induced-protein-35-exacerbates-h5n1-influenza-disease-through-the-expression-of-il-12p40-homodimer
#10
Anshu P Gounder, Christine C Yokoyama, Nicholas N Jarjour, Traci L Bricker, Brian T Edelson, Adrianus C M Boon
Pro-inflammatory cytokinemia is a hallmark of highly pathogenic H5N1 influenza virus (IAV) disease yet little is known about the role of host proteins in modulating a pathogenic innate immune response. The host Interferon Induced Protein 35 (Ifi35) has been implicated in increased susceptibility to H5N1-IAV infection. Here, we show that Ifi35 deficiency leads to reduced morbidity in mouse models of highly pathogenic H5N1- and pandemic H1N1-IAV infection. Reduced weight loss in Ifi35-/- mice following H5N1-IAV challenge was associated with reduced cellular infiltration and decreased production of specific cytokines and chemokines including IL-12p40...
April 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29691386/toll-like-receptors-mediated-pathways-activate-inflammatory-responses-in-the-esophageal-mucosa-of-adult-eosinophilic-esophagitis
#11
Ángel Arias, María Vicario, David Bernardo, José M Olalla, Marina Fortea, Ana Montalban-Arques, Pilar Martínez-Fernández, Ana M González-Castro, Teresa Mota-Huertas, Laura Arias-González, Alfredo J Lucendo
OBJECTIVES: Esophageal microbiota and regulation of adaptive immunity are increasingly being investigated in eosinophilic esophagitis (EoE). Toll-like receptors (TLRs) play a central role in the initiation and maintenance of innate immune activity. Our objective was to characterize the esophageal and duodenal innate immune response in EoE and its modulation by dietary therapy. METHODS: Esophageal and duodenal biopsy samples were collected from 10 adults with untreated EoE, before and after effective treatment with a six-food elimination diet (SFED), and 10 controls with normal esophagus...
April 25, 2018: Clinical and Translational Gastroenterology
https://www.readbyqxmd.com/read/29689371/large-supramolecular-structures-of-33-mer-gliadin-peptide-activate-toll-like-receptors-in-macrophages
#12
M G Herrera, M Pizzuto, C Lonez, K Rott, A Hütten, N Sewald, J-M Ruysschaert, V I Dodero
Gliadin, an immunogenic protein present in wheat, is not fully degraded by humans and after the normal gastric and pancreatic digestion, the immunodominant 33-mer gliadin peptide remains unprocessed. The 33-mer gliadin peptide is found in human faeces and urine, proving not only its proteolytic resistance in vivo but more importantly its transport through the entire human body. Here, we demonstrate that 33-mer supramolecular structures larger than 220nm induce the overexpression of nuclear factor kappa B (NF-κB) via a specific Toll-like Receptor (TLR) 2 and (TLR) 4 dependent pathway and the secretion of pro-inflammatory cytokines such as IP-10/CXCL10 and TNF-α...
April 21, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29673059/the-tlr4-ire1%C3%AE-pathway-activation-contributes-to-palmitate-elicited-lipotoxicity-in-hepatocytes
#13
Chen Shen, Wang Ma, Lei Ding, Songtao Li, Xiaobing Dou, Zhenyuan Song
Lipotoxicity induced by saturated fatty acids (SFAs) plays a pathological role in the development of non-alcoholic fatty liver disease (NAFLD); however, the exact mechanism(s) remain to be clearly elucidated. Toll-like receptor (TLR) 4 plays a fundamental role in activating the innate immune system. Intriguingly, hepatocytes express TLR4 and machinery for TLR4 signalling pathway. That liver-specific TLR4 knockout mice are protective against diet-induced NAFLD suggests that hepatocyte TLR4 signalling pathway plays an important role in NAFLD pathogenesis...
April 19, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29670154/comprehensive-comparison-of-polysaccharides-from-ganoderma-lucidum-and-g-sinense-chemical-antitumor-immunomodulating-and-gut-microbiota-modulatory-properties
#14
Li-Feng Li, Hong-Bing Liu, Quan-Wei Zhang, Zhi-Peng Li, Tin-Long Wong, Hau-Yee Fung, Ji-Xia Zhang, Su-Ping Bai, Ai-Ping Lu, Quan-Bin Han
Both Ganoderma lucidum (GL) and G. sinense (GS) are used as Lingzhi in China. Their functions are assumed to mainly derive from triterpenes and polysaccharides; however, the two species have very different triterpenes profiles, if this was the case, then the bioactivity of these two species should differ. Instead, could the polysaccharides be similar, contributing to the shared therapeutic basis? In this study, two main polysaccharide fractions from different batches of GL and GS were systematically compared by a series of chemical and biological experiments...
April 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29669317/palmitate-activates-ccl4-expression-in-human-monocytic-cells-via-tlr4-myd88-dependent-activation-of-nf-%C3%AE%C2%BAb-mapk-pi3k-signaling-systems
#15
Shihab Kochumon, Ajit Wilson, Betty Chandy, Steve Shenouda, Jaakko Tuomilehto, Sardar Sindhu, Rasheed Ahmad
BACKGROUND/AIMS: Obesity is associated with adipose tissue inflammation which plays a key role in the development of insulin resistance and type 2 diabetes (T2D). Saturated free fatty acids (SFAs) levels are found to be elevated in obesity and T2D. Chemokines are known to have potent inflammatory functions in a wide range of biological processes linked to immunological disorders. Since CCL4 (Chemokine (C-C motif) ligand 4), also known as macrophage inflammatory protein-1β (MIP-1β), plays an important role in the migration of monocytes into the adipose tissue, we investigated the expression of CCL4 in monocytic cells/macrophages following activation with free fatty acid palmitate...
April 13, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29667581/relation-between-bioresorbable-scaffold-sizing-using-qca-dmax-and-long-term-clinical-outcomes-in-1-232-patients-from-3-study-cohorts-absorb-cohort-b-absorb-extend-and-absorb-ii
#16
Yuki Katagiri, Yoshinobu Onuma, Taku Asano, Ply Chichareon, Carlos Collet, Yosuke Miyazaki, Jan J Piek, Joanna J Wykrzykowska, Alexandre Abizaid, John A Ormiston, Bernard Chevalier, Patrick W Serruys
AIMS: This study sought to investigate the long-term clinical outcomes related to scaffold sizing based on quantitative coronary angiography. METHODS AND RESULTS: A total of 1,248 patients who received Absorb bioresorbable scaffolds in the ABSORB Cohort B, ABSOR EXTEND, ABSORB II trials were included in the analysis. The incidence of MACE (a composite of cardiac death, any myocardial infarction [MI], and ischemia-driven target lesion revascularization [ID-TLR]) was analysed according to the Dmax subclassification of oversized scaffold group versus non-oversized (any undersize) scaffold group...
April 17, 2018: EuroIntervention
https://www.readbyqxmd.com/read/29658605/aerobic-exercise-regulates-blood-lipid-and-insulin-resistance-via-the-toll%C3%A2-like-receptor-4%C3%A2-mediated-extracellular-signal%C3%A2-regulated-kinases-amp%C3%A2-activated-protein-kinases-signaling-pathway
#17
Mei Wang, Sen Li, Fubaihui Wang, Jinhui Zou, Yanfeng Zhang
Diabetes mellitus is a complicated metabolic disease with symptoms of hyperglycemia, insulin resistance, chronic damage and dysfunction of tissues, and metabolic syndrome for insufficient insulin production. Evidence has indicated that exercise treatments are essential in the progression of type‑ІІ diabetes mellitus, and affect insulin resistance and activity of islet β‑cells. In the present study, the efficacy and signaling mechanism of aerobic exercise on blood lipids and insulin resistance were investigated in the progression of type‑ІІ diabetes mellitus...
April 11, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29658581/microrna%C3%A2-146a-toll%C3%A2-like-receptor-4-signaling-protects-against-severe-burn%C3%A2-induced-remote-acute-lung-injury-in-rats-via-anti%C3%A2-inflammation
#18
Jinhua Luo, Jianhua Zhan, Haoyuan You, Xing Cheng
The present study investigated the preventive effects of microRNA (miR)‑146a against severe burn‑induced remote acute lung injury (ALI) in rats and the underlying mechanism. The surface area of the skin was immersed in 100˚C water for 5‑10 sec on the dorsal surface. The expression level of miR‑146a was significantly downregulated in rats with burn‑induced ALI. Downregulation of miR‑146a increased inflammation, and inducible nitric oxide synthase (iNOS) and cyclooxygenase‑2 (COX‑2) expression in a model of ALI in vitro via the promotion of the Toll‑like receptor (TLR)4/nuclear factor (NF)‑κB signaling pathway...
April 12, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29651293/homeobox-a5-promotes-white-adipose-tissue-browning-through-inhibition-of-the-tenascin-c-toll-like-receptor-4-nuclear-factor-kappa-b-inflammatory-signaling-in-mice
#19
Weina Cao, Hongtao Huang, Tianyu Xia, Chenlong Liu, Saeed Muhammad, Chao Sun
Lipopolysaccharide (LPS) induces rapid increase in systemic inflammatory factors. As adipose tissue is a key contributor to the inflammatory response to numerous metabolic stimuli, it is important to understand the mechanism behind the LPS-induced inflammation in white adipose tissue (WAT). Homeobox a5 (Hoxa5) is an important transcription factor, which is highly expressed in adipose tissue, and its mRNA expression is increased at cold exposure in mice. So far, the function of Hoxa5 in adipose tissue browning has been poorly understood...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29649324/a-low-dose-lipid-infusion-is-sufficient-to-induce-insulin-resistance-and-a-pro-inflammatory-response-in-human-subjects
#20
Hanyu Liang, Helen Lum, Andrea Alvarez, Jose de Jesus Garduno-Garcia, Benjamin J Daniel, Nicolas Musi
OBJECTIVE: The root cause behind the low-grade inflammatory state seen in insulin resistant (obesity and type 2 diabetes) states is unclear. Insulin resistant subjects have elevations in plasma free fatty acids (FFA), which are ligands for the pro-inflammatory toll-like receptor (TLR)4 pathway. We tested the hypothesis that an experimental elevation in plasma FFA (within physiological levels) in lean individuals would upregulate TLR4 and activate downstream pathways (e.g., MAPK) in circulating monocytes...
2018: PloS One
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