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Immunometabolism

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https://www.readbyqxmd.com/read/28511942/effect-of-resistant-and-digestible-rice-starches-on-human-cytokine-and-lactate-metabolic-networks-in-serum
#1
Huisong Wang, Guangchang Pang
Resistant starch generated after treating ordinary starch is of great significance to human health in the countries with overnutrition. However, its functional evaluation in the human body has been rarely reported. By determining the lactate metabolic flux, 12 serum enzymes expression level and 38 serum cytokines in healthy volunteers, the variation in cytokine network and lactate metabolic network in serum were investigated to compare the mechanism of the physiological effects between the two starches. The results indicated that compared with digestible starch, resistant starch had anti-inflammatory effects, increased anabolism, and decreased catabolism...
May 13, 2017: Cytokine
https://www.readbyqxmd.com/read/28503530/caffeine-supplementation-affects-the-immunometabolic-response-to-concurrent-training
#2
Fabrício Eduardo Rossi, Valéria Leme Gonçalves Panissa, Paula Aulves Monteiro, José Gerosa-Neto, Érico Chagas Caperuto, Jason Michael Cholewa, Alessandro Moura Zagatto, Fábio Santos Lira
The aim of the present study was to investigate the effects of caffeine (CAF) and carbohydrate (CHO) intake on strength performance and its metabolic and inflammatory responses during concurrent training. Seven active males ingested a double-placebo (P), CAF (capsule 5 mg/kg) or CHO (20% maltodextrin solution) supplementation before strength exercise. Participants performed three randomized sessions of 5,000-m high-intensity intermittent aerobic exercise at maximal intensity followed by strength exercise, performing after the P, CHO, and CAF intake...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28490576/complement-c5a-functions-as-a-master-switch-for-the-ph-balance-in-neutrophils-exerting-fundamental-immunometabolic-effects
#3
Stephanie Denk, Miriam D Neher, David A C Messerer, Rebecca Wiegner, Bo Nilsson, Daniel Rittirsch, Kristina Nilsson-Ekdahl, Sebastian Weckbach, Anita Ignatius, Miriam Kalbitz, Florian Gebhard, Manfred E Weiss, Josef Vogt, Peter Radermacher, Jörg Köhl, John D Lambris, Markus S Huber-Lang
During sepsis, excessive activation of the complement system with generation of the anaphylatoxin C5a results in profound disturbances in crucial neutrophil functions. Moreover, because neutrophil activity is highly dependent on intracellular pH (pHi), we propose a direct mechanistic link between complement activation and neutrophil pHi In this article, we demonstrate that in vitro exposure of human neutrophils to C5a significantly increased pHi by selective activation of the sodium/hydrogen exchanger. Upstream signaling of C5a-mediated intracellular alkalinization was dependent on C5aR1, intracellular calcium, protein kinase C, and calmodulin, and downstream signaling regulated the release of antibacterial myeloperoxidase and lactoferrin...
May 10, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28484277/tyrosine-kinase-inhibitors-of-ripk2-attenuate-bacterial-cell-wall-mediated-lipolysis-inflammation-and-dysglycemia
#4
Brittany M Duggan, Kevin P Foley, Brandyn D Henriksbo, Joseph F Cavallari, Akhilesh K Tamrakar, Jonathan D Schertzer
Inflammation underpins aspects of insulin resistance and dysglycemia. Microbiota-derived cell wall components such as muropeptides or endotoxin can trigger changes in host immunity and metabolism. Specific peptidoglycan motifs promote metabolic tissue inflammation, lipolysis and insulin resistance via Nucleotide-binding oligomerization domain-containing protein 1 (Nod1). Receptor-interacting serine/threonine-protein kinase 2 (Ripk2) mediates Nod1-induced immunity, but the role of Ripk2 in metabolism is ill-defined...
May 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28475890/metabolic-instruction-of-immunity
#5
REVIEW
Michael D Buck, Ryan T Sowell, Susan M Kaech, Erika L Pearce
Choices have consequences. Immune cells survey and migrate throughout the body and sometimes take residence in niche environments with distinct communities of cells, extracellular matrix, and nutrients that may differ from those in which they matured. Imbedded in immune cell physiology are metabolic pathways and metabolites that not only provide energy and substrates for growth and survival, but also instruct effector functions, differentiation, and gene expression. This review of immunometabolism will reference the most recent literature to cover the choices that environments impose on the metabolism and function of immune cells and highlight their consequences during homeostasis and disease...
May 4, 2017: Cell
https://www.readbyqxmd.com/read/28461074/vitamin-d-endocrinology-on-the-cross-road-between-immunity-and-metabolism
#6
REVIEW
An-Sofie Vanherwegen, Conny Gysemans, Chantal Mathieu
The effects of vitamin D on the immune function have been recognized for more than a quarter of a century. However, our understanding of the multifactorial nature of the effects of vitamin D at the cellular, molecular and metabolic level in different immune subsets of the innate and adaptive system has dramatically progressed during the last decades. In this review, we summarize the main metabolic pathways preferentially used in different subsets of T cells, B cells, macrophages and dendritic cells as well as the immunomodulatory effects of vitamin D on these cells...
April 28, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28458087/reenergizing-t-cell-anti-tumor-immunity-by-harnessing-immunometabolic-checkpoints-and-machineries
#7
REVIEW
Ping-Chih Ho, Susan M Kaech
T cells patrol our bodies preventing pathogenic infections and malignant cell outgrowth. However, T cells must be properly controlled because aberrant or persistent T cell responses can damage tissues and contribute to autoimmune diseases and other chronic inflammatory diseases including metabolic syndrome. One regulatory mechanism utilized in immune cells is immunometabolic regulation, which ensures immune cells properly respond to systemic and peripheral metabolic cues. Recent work has suggested that deregulated metabolism in tumor cells creates a microenvironmental barrier for mounting effective anti-tumor immune responses...
April 27, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28446465/deletion-of-lactate-dehydrogenase-a-in-myeloid-cells-triggers-antitumor-immunity
#8
Pankaj Seth, Eva Csizmadia, Andreas Hedblom, Marta Vuerich, Han Xie, Mailin Li, Maria Serena Longhi, Barbara Wegiel
Immunometabolism is emerging as a critical determinant of cancer pathophysiology. In this study, we explored the contributions of macrophage-expressed lactate dehydrogenase-A (LDH-A) to tumor formation in a K-Ras murine model of lung carcinoma. Myeloid-specific deletion of LDH-A promoted accumulation of macrophages with a CD86high and MCP-1high M1-like phenotype that suppressed tumor growth. This phenotypic effect was accompanied by reduced VEGF expression and angiogenesis; diminished numbers of PD-L1+ cancer cells; increased numbers of CD3+ T cells and activation status of CD8+ T cells...
April 26, 2017: Cancer Research
https://www.readbyqxmd.com/read/28443090/immunometabolic-regulations-mediated-by-coinhibitory-receptors-and-their-impact-on-t-cell-immune-responses
#9
REVIEW
Nikolaos Patsoukis, Jessica D Weaver, Laura Strauss, Christoph Herbel, Pankaj Seth, Vassiliki A Boussiotis
Host immunity provides wide spectrum protection that serves to eradicate pathogens and cancer cells, while maintaining self-tolerance and immunological homeostasis. Ligation of the T cell receptor (TCR) by antigen activates signaling pathways that coordinately induce aerobic glycolysis, mitochondrial activity, anabolic metabolism, and T effector cell differentiation. Activation of PI3K, Akt, and mTOR triggers the switch to anabolic metabolism by inducing transcription factors such as Myc and HIF1, and the glucose transporter Glut1, which is pivotal for the increase of glucose uptake after T cell activation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28442214/regulatory-t-cells-as-suppressors-of-anti-tumor-immunity-role-of-metabolism
#10
REVIEW
Veronica De Rosa, Francesca Di Rella, Antonio Di Giacomo, Giuseppe Matarese
Novel concepts in immunometabolism support the hypothesis that glucose consumption is also used to modulate anti-tumor immune responses, favoring growth and expansion of specific cellular subsets defined in the past as suppressor T cells and currently reborn as regulatory T (Treg) cells. During the 1920s, Otto Warburg and colleagues observed that tumors consumed high amounts of glucose compared to normal tissues, even in the presence of oxygen and completely functioning mitochondria. However, the role of the Warburg Effect is still not completely understood, particularly in the context of an ongoing anti-tumor immune response...
April 11, 2017: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/28440755/dysfunctional-immunometabolic-effects-of-vitamin-d-deficiency-increased-cardiometabolic-risk-potential-epidemiological-alert-in-america
#11
Martin Rosas-Peralta, Michael F Holick, Gabriela Borrayo-Sánchez, Alejandra Madrid-Miller, Erick Ramírez-Árias, Efrain Arizmendi-Uribe
Vitamin D deficiency is a serious public health problem worldwide that affects not only skeletal health, but also a wide range of acute and chronic diseases. However, there is still skepticism because of the lack of randomized, controlled trials to support association studies on the benefits of vitamin D for non-skeletal health. This review was based on articles published during the 1980-2015 obtained from the Cochrane Central Register of controlled trials, MEDLINE and PubMed, and focuses on recent challenges with regard to the definition of vitamin D deficiency and how to achieve optimal serum 25-hydroxyvitamin D levels from dietary sources, supplements, and sun exposure...
March 2017: Endocrinol Diabetes Nutr
https://www.readbyqxmd.com/read/28439258/diabetic-cardiomyopathy-an-immunometabolic-perspective
#12
REVIEW
Paras K Mishra, Wei Ying, Shyam Sundar Nandi, Gautam K Bandyopadhyay, Kaushik K Patel, Sushil K Mahata
The heart possesses a remarkable inherent capability to adapt itself to a wide array of genetic and extrinsic factors to maintain contractile function. Failure to sustain its compensatory responses results in cardiac dysfunction, leading to cardiomyopathy. Diabetic cardiomyopathy (DCM) is characterized by left ventricular hypertrophy and reduced diastolic function, with or without concurrent systolic dysfunction in the absence of hypertension and coronary artery disease. Changes in substrate metabolism, oxidative stress, endoplasmic reticulum stress, formation of extracellular matrix proteins, and advanced glycation end products constitute the early stage in DCM...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28421818/cell-origin-dictates-programming-of-resident-versus-recruited-macrophages-during-acute-lung-injury
#13
Kara J Mould, Lea Barthel, Michael P Mohning, Stacey M Thomas, Alexandra L McCubbrey, Thomas Danhorn, Sonia M Leach, Tasha E Fingerlin, Brian P O'Connor, Julie A Reisz, Angelo D'Alessandro, Donna L Bratton, Claudia V Jakubzick, William J Janssen
Two populations of alveolar macrophages (AMs) co-exist in the inflamed lung: resident AMs that arise during embryogenesis, and recruited AMs that originate postnatally from circulating monocytes. The objective of this study was to determine whether origin or environment dictates the transcriptional, metabolic, and functional programming of these two ontologically distinct populations over the time course of acute inflammation. RNA sequencing demonstrated marked transcriptional differences between resident and recruited AMs affecting three main areas: proliferation, inflammatory signaling, and metabolism...
April 19, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28421074/immunometabolic-phenotype-alterations-associated-with-the-induction-of-disease-tolerance-and-persistent-asymptomatic-infection-of-salmonella-in-the-chicken-intestine
#14
REVIEW
Michael H Kogut, Ryan J Arsenault
The adaptation of Salmonella enterica to the eukaryotic host is a key process that enables the bacterium to survive in a hostile environment. Salmonella have evolved an intimate relationship with its host that extends to their cellular and molecular levels. Colonization, invasion, and replication of the bacteria in an appropriate host suggest that modification of host functions is central to pathogenesis. Intuitively, this subversion of the cell must be a complex process, since hosts are not inherently programmed to provide an environment conducive to pathogens...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28421069/engineering-chimeric-antigen-receptor-t-cells-for-racing-in-solid-tumors-don-t-forget-the-fuel
#15
REVIEW
Melita Irving, Romain Vuillefroy de Silly, Kirsten Scholten, Nahzli Dilek, George Coukos
T-cells play a critical role in tumor immunity. Indeed, the presence of tumor-infiltrating lymphocytes is a predictor of favorable patient prognosis for many indications and is a requirement for responsiveness to immune checkpoint blockade therapy targeting programmed cell death 1. For tumors lacking immune infiltrate, or for which antigen processing and/or presentation has been downregulated, a promising immunotherapeutic approach is chimeric antigen receptor (CAR) T-cell therapy. CARs are hybrid receptors that link the tumor antigen specificity and affinity of an antibody-derived single-chain variable fragment with signaling endodomains associated with T-cell activation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28402847/igf1-shapes-macrophage-activation-in-response-to-immunometabolic-challenge
#16
Olga Spadaro, Christina D Camell, Lidia Bosurgi, Kim Y Nguyen, Yun-Hee Youm, Carla V Rothlin, Vishwa Deep Dixit
In concert with their phagocytic activity, macrophages are thought to regulate the host immunometabolic responses primarily via their ability to produce specific cytokines and metabolites. Here, we show that IL-4-differentiated, M2-like macrophages secrete IGF1, a hormone previously thought to be exclusively produced from liver. Ablation of IGF1 receptors from myeloid cells reduced phagocytosis, increased macrophages in adipose tissue, elevated adiposity, lowered energy expenditure, and led to insulin resistance in mice fed a high-fat diet...
April 11, 2017: Cell Reports
https://www.readbyqxmd.com/read/28396078/macrophage-immunometabolism-where-are-we-going
#17
REVIEW
Jan Van den Bossche, Luke A O'Neill, Deepthi Menon
A growing number of findings highlight the crucial role of metabolic reprogramming in macrophage activation. Metabolic pathways are closely interconnected and recent literature demonstrates the need for glucose metabolism in anti-inflammatory as well as inflammatory macrophages. Moreover, fatty acid oxidation (FAO) not only supports anti-inflammatory responses as described formerly but also drives inflammasome activation in inflammatory macrophages. Hence, defining glycolysis as proinflammatory and FAO as anti-inflammatory may be an oversimplification...
April 7, 2017: Trends in Immunology
https://www.readbyqxmd.com/read/28393924/immunometabolism-stress-induced-macrophage-polarization
#18
Kirsty Minton
No abstract text is available yet for this article.
May 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28387321/immunometabolism-er-stress-drives-obesity-by-reducing-energy-expenditure
#19
David Holmes
No abstract text is available yet for this article.
June 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/28381830/the-role-of-metabolism-in-the-pathogenesis-of-osteoarthritis
#20
REVIEW
Ali Mobasheri, Margaret P Rayman, Oreste Gualillo, Jérémie Sellam, Peter van der Kraan, Ursula Fearon
Metabolism is important for cartilage and synovial joint function. Under adverse microenvironmental conditions, mammalian cells undergo a switch in cell metabolism from a resting regulatory state to a highly metabolically activate state to maintain energy homeostasis. This phenomenon also leads to an increase in metabolic intermediates for the biosynthesis of inflammatory and degradative proteins, which in turn activate key transcription factors and inflammatory signalling pathways involved in catabolic processes, and the persistent perpetuation of drivers of pathogenesis...
April 6, 2017: Nature Reviews. Rheumatology
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