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Immune metabolism

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https://www.readbyqxmd.com/read/27921437/-adaptation-of-adipose-tissue-to-weight-reduction-energy-restricted-diet-in-obese-individuals
#1
Vladimír Štich
Obesity is associated with a number of metabolic disorders that lead to the development of type 2 diabetes, hyperlipidemia and ultimately cardiovascular diseases. An important role in the pathogenesis of metabolic disorders accompanying obesity is probably played by the alterations of adipose tissue characteristics: metabolic, endocrine and immune functions. The key component of obesity treatment, the weight-reduction energy-restricted diet, leads not only to the reduction of weight (specifically fat mass), but also to correction of obesity accompanying metabolic disorders...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27921270/halogenated-indoles-eradicate-bacterial-persister-cells-and-biofilms
#2
Jin-Hyung Lee, Yong-Guy Kim, Giyeon Gwon, Thomas K Wood, Jintae Lee
The emergence of antibiotic resistance has necessitated new therapeutic approaches to combat recalcitrant bacterial infections. Persister cells, often found in biofilms, are metabolically dormant, and thus, are highly tolerant to all traditional antibiotics and represent a major drug resistance mechanism. In the present study, 36 diverse indole derivatives were investigated with the aim of identifying novel compounds that inhibit persisters and biofilm formation by Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus...
December 2016: AMB Express
https://www.readbyqxmd.com/read/27921083/integrated-role-of-bifidobacterium-animalis-subsp-lactis-supplementation-in-gut-microbiota-immunity-and-metabolism-of-infant-rhesus-monkeys
#3
Xuan He, Carolyn M Slupsky, James W Dekker, Neill W Haggarty, Bo Lönnerdal
To investigate the impact of probiotic supplementation of infant formula on immune parameters, intestinal microbiota, and metabolism, five individually housed infant rhesus monkeys exclusively fed standard infant formula supplemented with probiotics (Bifidobacterium animalis subsp. lactis HN019) from birth until 3 months of age were compared with five standard formula-fed and five breast-fed monkeys. Anthropometric measurements, serum insulin, immune parameters, fecal microbiota, and metabolic profiles of serum, urine, and feces were evaluated...
November 2016: MSystems
https://www.readbyqxmd.com/read/27921044/non-alcoholic-fatty-liver-disease-cause-or-effect-of-metabolic-syndrome
#4
REVIEW
Christoph Grander, Felix Grabherr, Alexander R Moschen, Herbert Tilg
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease throughout the world. Pathophysiological insights into this disease have recently illustrated that various factors such as insulin resistance, innate immunity, metabolic inflammation, and the microbiota are of relevance. NAFLD, metabolic syndrome (MS), and type 2 diabetes (T2D) share many pathophysiological aspects, and inflammatory processes in the adipose tissue, gut, and liver have evolved to be of exceptional importance. Most of NAFLD patients are obese and encounter a high risk of developing MS and T2D...
October 2016: Visceral Medicine
https://www.readbyqxmd.com/read/27920756/salmonella-typhimurium-and-multidirectional-communication-in-the-gut
#5
REVIEW
Elena V Gart, Jan S Suchodolski, Thomas H Welsh, Robert C Alaniz, Ronald D Randel, Sara D Lawhon
The mammalian digestive tract is home to trillions of microbes, including bacteria, archaea, protozoa, fungi, and viruses. In monogastric mammals the stomach and small intestine harbor diverse bacterial populations but are typically less populated than the colon. The gut bacterial community (microbiota hereafter) varies widely among different host species and individuals within a species. It is influenced by season of the year, age of the host, stress and disease. Ideally, the host and microbiota benefit each other...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27918890/differential-expression-on-mitochondrial-tryparedoxin-peroxidase-mtctxnpx-in-trypanosoma-cruzi-after-ferrocenyl-diamine-hydrochlorides-treatments
#6
Andréa A N Kohatsu, Flávia A J Silva, Acácio I Francisco, Aline Rimoldi, Marco T A Silva, Maria D Vargas, João A da Rosa, Regina M B Cicarelli
Resistance to benznidazole in certain strains of Trypanosoma cruzi may be caused by the increased production of enzymes that act on the oxidative metabolism, such as mitochondrial tryparedoxin peroxidase (mTcTXNPx) which catalyses the reduction of peroxides. This work presents cytotoxicity assays performed with ferrocenyl diamine hydrochlorides in six different strains of T. cruzi epimastigote forms (Y, Bolivia, SI1, SI8, QMII, and SIGR3). The last four strains have been recently isolated from triatominae and mammalian host (domestic cat)...
December 2, 2016: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27918672/in-this-issue-protein-structure-cellular-metabolism-and-genetics-in-immunity
#7
Himanshu Kumar, Adrian Bot
No abstract text is available yet for this article.
November 2016: International Reviews of Immunology
https://www.readbyqxmd.com/read/27918097/sugars-and-fat-a-healthy-way-to-generate-functional-regulatory-t-cells
#8
Sarah Sharon Gabriel, Axel Kallies
Cellular metabolism has emerged as an important regulator of adaptive immunity. While the metabolic requirements of conventional T cells are increasingly understood, the role of cellular metabolism in Foxp3(+) regulatory T (Treg) cells is less clear. Although it is well accepted that repression of Akt/mTOR, HIF-1α and aerobic glycolysis are important for the efficient generation of Treg cells in vitro, clear evidence how these pathways impact on Treg-cell development in vivo is limited. Furthermore, newer studies have shown that the same pathways that appear to suppress Treg-cell development are active in and required for functionally mature Treg cells...
December 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27917879/colonic-luminal-microbiota-and-bacterial-metabolite-composition-in-pregnant-huanjiang-mini-pigs-effects-of-food-composition-at-different-times-of-pregnancy
#9
Xiang-Feng Kong, Yu-Jiao Ji, Hua-Wei Li, Qian Zhu, F Blachier, Mei-Mei Geng, Wen Chen, Yu-Long Yin
The gut harbours diverse and complex microbiota, which influence body health including nutrient metabolism, immune development, and protection from pathogens. Pregnancy is associated with immune and metabolic changes that might be related to microbiota compositional dynamics. We therefore investigated the colonic luminal bacteria community in Huanjiang mini-pigs fed diets with different nutrient levels from the first to third trimester of pregnancy. The concentrations of intestinal metabolites including short-chain fat acids, NH3-N, indole, skatole, and bioamines were also determined...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27916787/comprehensive-mirna-expression-profiles-in-the-ilea-of-lawsonia-intracellularis-infected-pigs
#10
Hongyi Li, Mao Zhang, Enqin Zheng
To analyze the miRNA expression profiles in Lawsoniaintracellularis-infected porcine intestines, infected pigs were first identified using PCR (Polymerase Chain Reaction). Then, RNA from infected intestines and control tissues were isolated and subjected to microarray analysis and RT-PCR. Results showed that a total of 83 miRNAs were differentially expressed between the infected samples and controls, out of which 53 were upregulated and 30 were downregulated. Validation using RT-PCR showed a high degree of confidence for the obtained data...
December 4, 2016: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/27916687/a-unique-combination-of-micronutrients-rejuvenates-cognitive-performance-in-aged-mice
#11
Sam D Perez, Kristy Du, Catarina Rendeiro, Lin Wang, Qian Wu, Stanislav S Rubakhin, Rema Vazhappilly, Jeffrey H Baxter, Jonathan V Sweedler, Justin S Rhodes
It is widely believed that diet can influence the onset and severity of cognitive aging, but the optimal combination of micronutrients and molecular and cellular mechanisms remain elusive. The purpose of this study was to compare the effects of eight distinct diets, consisting of various concentrations of selected micronutrients, on learning and memory as well as markers of neuronal plasticity, and metabolic and neuro-immune status of the aged hippocampus. Eighteen-month-old male and female C57BL/6J mice were fed the diets for 16 weeks, followed by learning and memory trials on the active avoidance task...
December 1, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27916613/leptin-in-inflammation-and-autoimmunity
#12
REVIEW
Antonio La Cava
After its discovery as a key controller of metabolic function, leptin has been later extensively implicated in additional functions including important modulatory activities on the innate and adaptive immune response. This review analyzes the known implications of leptin in multiple inflammatory conditions, including autoimmune diseases, and how this knowledge could be instrumental in the design of leptin-based manipulation strategies to help restoration of abnormal immune responses.
December 1, 2016: Cytokine
https://www.readbyqxmd.com/read/27915991/control-of-inflammatory-bowel-disease-and-colorectal-cancer-by-synthetic-vitamin-d-receptor-ligands
#13
Ichiro Takada, Makoto Makishima
Vitamin D deficiency and insufficiency are associated with an increased risk of cancer, autoimmune disease, inflammation, infection, cardiovascular disease and metabolic disease, as well as bone and mineral disorders. The vitamin D receptor (VDR), a member of the nuclear receptor superfamily, is a receptor for the active form of vitamin D, 1α,25-dihydroxyvitamin D3 [1,25(OH)2D3], and mediates vitamin D regulation of specific target gene expression. The secondary bile acid lithocholic acid, which is produced by intestinal bacteria, is another natural VDR ligand...
December 2, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/27915146/differential-sensitivity-to-cadmium-of-immunomarkers-measured-in-hemocyte-subpopulations-of-zebra-mussel-dreissena-polymorpha
#14
Lauris Evariste, Damien Rioult, Pauline Brousseau, Alain Geffard, Elise David, Michel Auffret, Michel Fournier, Stéphane Betoulle
Increasing discharge of industrial wastes into the environment results in pollution transfer towards hydrosystems. These activities release heavy metals such as cadmium, known as persistent pollutant that is accumulated by molluscs and exercise immunotoxicological effects. Among molluscs, the zebra mussel, Dreissena polymorpha constitutes a suitable support for freshwater ecotoxicological studies. In molluscs, homeostasis maintain is ensured in part by hemocytes that are composed of several cell populations involved in multiple physiological processes such as cell-mediated immune response or metal metabolism...
December 1, 2016: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27914202/probiotic-roles-of-lactobacillus-spp-in-swine-insights-from-gut-microbiota
#15
REVIEW
Valerie Diane V Valeriano, Marilen P Balolong, Dae-Kyung Kang
The use of lactobacilli as probiotics in swine has been gaining attention due to their ability to improve growth performance and carcass quality, prevent gastrointestinal infection, and most importantly, their 'generally recognised as safe' status. Previous studies support the potential of lactobacilli to regulate host immune systems, enhance gut metabolic capacities, and maintain balance in the gut microbiota. Research on swine gut microbiota has revealed complex gut microbial community structure and showed the importance of Lactobacillus to the host's health...
December 3, 2016: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/27911843/impact-of-the-gut-microbiota-on-enhancer-accessibility-in-gut-intraepithelial-lymphocytes
#16
Nicholas P Semenkovich, Joseph D Planer, Philip P Ahern, Nicholas W Griffin, Charles Y Lin, Jeffrey I Gordon
The gut microbiota impacts many aspects of host biology including immune function. One hypothesis is that microbial communities induce epigenetic changes with accompanying alterations in chromatin accessibility, providing a mechanism that allows a community to have sustained host effects even in the face of its structural or functional variation. We used Assay for Transposase-Accessible Chromatin with high-throughput sequencing (ATAC-seq) to define chromatin accessibility in predicted enhancer regions of intestinal αβ(+) and γδ(+) intraepithelial lymphocytes purified from germ-free mice, their conventionally raised (CONV-R) counterparts, and mice reared germ free and then colonized with CONV-R gut microbiota at the end of the suckling-weaning transition...
December 1, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27911401/an-optimized-protocol-to-analyze-glycolysis-and-mitochondrial-respiration-in-lymphocytes
#17
Javier Traba, Pietro Miozzo, Billur Akkaya, Susan K Pierce, Munir Akkaya
Lymphocytes respond to a variety of stimuli by activating intracellular signaling pathways, which in turn leads to rapid cellular proliferation, migration and differentiation, and cytokine production. All of these events are tightly linked to the energy status of the cell, and therefore studying the energy-producing pathways may give clues about the overall functionality of these cells. The extracellular flux analyzer is a commonly used device for evaluating the performance of glycolysis and mitochondrial respiration in many cell types...
November 21, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911324/proteomics-analysis-of-blood-serums-from-alzheimer-s-disease-patients-using-itraq-labeling-technology
#18
Liming Shen, Liping Liao, Cheng Chen, Yi Guo, Dalin Song, Yong Wang, Youjiao Chen, Kaoyuan Zhang, Ming Ying, Shuiming Li, Qiong Liu, Jiazuan Ni
Alzheimer' disease (AD) is the most common form of dementia affecting up to 6% of the population over the age of 65. In order to discover differentially expressed proteins that might serve as potential biomarkers, the serums from AD patients and healthy controls were compared and analyzed using the proteomics approach of isobaric tagging for relative and absolute quantitation (iTRAQ). For the first time, AD biomarkers in serums are investigated in the Han Chinese population using iTRAQ labeled proteomics strategy...
December 1, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27910764/metabolic-regulation-of-natural-killer-cell-ifn-%C3%AE-production
#19
Annelise Y Mah, Megan A Cooper
Metabolism is critical for a host of cellular functions and provides a source of intracellular energy. It has been recognized recently that metabolism also regulates differentiation and effector functions of immune cells. Although initial work in this field has focused largely on T lymphocytes, recent studies have demonstrated metabolic control of innate immune cells, including natural killer (NK) cells. Here, we review what is known regarding the metabolic requirements for NK cell activation, focusing on NK cell production of interferon-gamma (IFN-γ)...
2016: Critical Reviews in Immunology
https://www.readbyqxmd.com/read/27908931/filling-the-tank-keeping-antitumor-t-cells-metabolically-fit-for-the-long-haul
#20
REVIEW
Greg M Delgoffe
Discoveries in tumor immunology and subsequent clinical advances in cancer immunotherapy have revealed that the immune system is not oblivious to tumor progression but heavily interacts with developing neoplasia and malignancy. A major factor preventing immune destruction is the establishment of a highly immunosuppressive tumor microenvironment (TME), which provides architecture to the tumor, supports indirect means of immunosuppression such as the recruitment of tolerogenic cells like regulatory T cells and myeloid-derived suppressor cells (MDSC), and represents a zone of metabolically dearth conditions...
December 2016: Cancer Immunology Research
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