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Nutrition and immunity

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https://www.readbyqxmd.com/read/28327177/intestinal-t-lymphocyte-homing-is-associated-with-gastric-emptying-and-epithelial-barrier-function-in-critically-ill-a-prospective-observational-study
#1
Christian Greis, Zohal Rasuly, Rolf A Janosi, Lambros Kordelas, Dietrich W Beelen, Tobias Liebregts
BACKGROUND: Impaired gastric emptying is common in critically ill patients. Intestinal dysmotility, a major cause of feed intolerance, may foster infectious complications due to mucosal barrier disruption. However, little is known about gut-directed immune activation, intestinal barrier function and its association with impaired gastric emptying in critically ill patients at ICU admission. METHODS: We conducted a prospective observational study at two tertiary care medical ICUs...
March 22, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28325762/a-genetic-screen-reveals-that-synthesis-of-1-4-dihydroxy-2-naphthoate-dhna-but-not-full-length-menaquinone-is-required-for-listeria-monocytogenes-cytosolic-survival
#2
Grischa Y Chen, Courtney E McDougal, Marc A D'Antonio, Jonathan L Portman, John-Demian Sauer
Through unknown mechanisms, the host cytosol restricts bacterial colonization; therefore, only professional cytosolic pathogens are adapted to colonize this host environment. Listeria monocytogenes is a Gram-positive intracellular pathogen that is highly adapted to colonize the cytosol of both phagocytic and nonphagocytic cells. To identify L. monocytogenes determinants of cytosolic survival, we designed and executed a novel screen to isolate L. monocytogenes mutants with cytosolic survival defects. Multiple mutants identified in the screen were defective for synthesis of menaquinone (MK), an essential molecule in the electron transport chain...
March 21, 2017: MBio
https://www.readbyqxmd.com/read/28320307/perturbation-of-microbiota-in-one-day-old-broiler-chickens-with-antibiotic-for-24-hours-negatively-affects-intestinal-immune-development
#3
Dirkjan Schokker, Alfons J M Jansman, Gosse Veninga, Naomi de Bruin, Stephanie A Vastenhouw, Freddy M de Bree, Alex Bossers, Johanna M J Rebel, Mari A Smits
BACKGROUND: Gut microbial colonization and development of immune competence are intertwined and are influenced by early-life nutritional, environmental, and management factors. Perturbation of the gut microbiome at young age affects the crosstalk between intestinal bacteria and host cells of the intestinal mucosa. RESULTS: We investigated the effect of a perturbation of the normal early life microbial colonization of the jejunum in 1-day old chickens. Perturbation was induced by administering 0...
March 20, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28318782/role-of-the-microbiome-in-swine-respiratory-disease
#4
REVIEW
Megan C Niederwerder
Microbiome is a term used to describe the community of microorganisms that live on the skin and mucosal surfaces of animals. The gastrointestinal microbiome is essential for proper nutrition and immunity. How the gastrointestinal microbiome impacts primary respiratory or systemic infections is an emerging area of study. Porcine reproductive and respiratory syndrome (PRRS) is caused by a systemic virus infection with primary lung pathology and continues to be the most costly disease of swine worldwide. Recent studies have demonstrated that improved outcome after experimental infection with PRRS virus and porcine circovirus type 2 (PCV2) is associated with increased fecal microbiome diversity and the presence of non-pathogenic Escherichia coli...
March 2, 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28318372/white-blood-cell-counts-insulin-resistance-vitamin-d-levels-and-sarcopenia-in-korean-elderly-men
#5
Sang-Hwan Kim, Hyun Seok Kwon, Hee-Jin Hwang
Sarcopenia is a major determinant of frailty, disability and mortality in the elderly. Whether low-grade inflammation, insulin resistance and vitamin D are independently associated with sarcopenia remains unclear. In our study, sarcopenia was defined as an appendicular skeletal muscle mass divided by height squared (ASM/Ht(2)) that was <2 SD below the normal means for young adults. Insulin resistance was estimated using the homeostasis model assessment of insulin resistance (HOMA-IR) index [(insulin (IU/mL) × fasting glucose (mg/dL)/18)/22...
May 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28315180/inflammation-based-indexes-and-clinicopathologic-features-are-strong-predictive-values-of-preoperative-circulating-tumor-cell-detection-in-gastric-cancer-patients
#6
L Zheng, K Zou, C Yang, F Chen, T Guo, B Xiong
PURPOSE: Circulating tumor cell (CTC) count and the host inflammatory response are two independent predictors for patients with various malignant disease. Several inflammation-based indicators have been demonstrated to have prognostic value in many malignant solid tumors, including systemic immune-inflammation index (SII), neutrophil lymphocyte ratio (NLR), platelet lymphocyte ratio (PLR), and prognostic nutrition index (PNI). The aim of this study was to evaluate the predictive value of the inflammation-based indexes including SII, NLR PLR, and PNI for CTC detection of gastric cancer patients before surgery...
March 17, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28304352/in-vitro-anti-inflammatory-and-cytotoxic-effects-of-aqueous-extracts-from-the-edible-sea-anemones-anemonia-sulcata-and-actinia-equina
#7
Tânia Costa Silva, Paula Branquinho de Andrade, Fátima Paiva-Martins, Patrícia Valentão, David Micael Pereira
Marine invertebrates have been attracting the attention of researchers for their application in nutrition, agriculture, and the pharmaceutical industry, among others. Concerning sea anemones (Cnidaria), little is known regarding their metabolic profiles and potential value as a source of pharmacologically-active agents. In this work, the chemical profiles of two species of sea anemones Actinia equina and Anemonia sulcata, were studied by high-performance liquid chromatography with diode-array detection (HPLC-DAD) and its impact upon immune and gastric cells was evaluated...
March 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28303424/inherited-disorders-of-transition-metal-metabolism-an-update
#8
REVIEW
Peter T Clayton
Elements with a biological role include six trace transition metals: manganese, iron, cobalt, copper, zinc and molybdenum. Transition metals participate in group transfer reactions such as glycosylation and phosphorylation and those that can transfer an electron by alternating between two redox states such as iron (3+/2+) and copper (2+/1+) are also very important in biological redox reactions including the reduction of molecular oxygen and the transport of oxygen. However, these trace metals are also potentially toxic, generating reactive oxygen species through Fenton chemistry...
March 16, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28301842/early-life-nutritional-programming-of-health-and-disease-in-the-gambia
#9
Sophie E Moore
BACKGROUND: Exposures during early life are increasingly being recognised as factors that play an important role in the aetiology of chronic non-communicable diseases (NCDs). The "Developmental Origins of Health and Disease" (DOHaD) hypothesis asserts that adverse early-life exposures - most notably unbalanced nutrition - leads to an increased risk for a range of NCDs and that disease risk is highest when there is a "mismatch" between the early- and later-life environments. Thus, the DOHaD hypothesis would predict highest risk in settings undergoing a rapid nutrition transition...
March 17, 2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28299915/metabolism-plays-the-key-roles-in-th-cells-differentiation
#10
A Hosseinzadeh, S Soukhtehzari, M Ghaedi, R Mansouri
The increasing rate of autoimmunity in recent decades cannot be related to only genetic instabilities and disorders. Diet can directly influence our health. Studies have shown that there is a relationship between nutritional elements and alteration in the immune system. Among immune cells, the function of T lymphocyte is important in directing immune response. T CD4+ cells lead other immune cells to respond to pathogens by secreting cytokines. HIV+ patients, who have largely lost their T CD4+ cells, are susceptible to opportunistic infections, which do not normally affect healthy people...
December 31, 2016: Reumatismo
https://www.readbyqxmd.com/read/28298276/early-life-nutritional-programming-of-cognition-the-fundamental-role-of-epigenetic-mechanisms-in-mediating-the-relation-between-early-life-environment-and-learning-and-memory-process
#11
REVIEW
Laura Moody, Hong Chen, Yuan-Xiang Pan
The perinatal period is a window of heightened plasticity that lays the groundwork for future anatomic, physiologic, and behavioral outcomes. During this time, maternal diet plays a pivotal role in the maturation of vital organs and the establishment of neuronal connections. However, when perinatal nutrition is either lacking in specific micro- and macronutrients or overloaded with excess calories, the consequences can be devastating and long lasting. The brain is particularly sensitive to perinatal insults, with several neurologic and psychiatric disorders having been linked to a poor in utero environment...
March 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28297714/root-microbiota-drive-direct-integration-of-phosphate-stress-and-immunity
#12
Gabriel Castrillo, Paulo José Pereira Lima Teixeira, Sur Herrera Paredes, Theresa F Law, Laura de Lorenzo, Meghan E Feltcher, Omri M Finkel, Natalie W Breakfield, Piotr Mieczkowski, Corbin D Jones, Javier Paz-Ares, Jeffery L Dangl
Plants live in biogeochemically diverse soils with diverse microbiota. Plant organs associate intimately with a subset of these microbes, and the structure of the microbial community can be altered by soil nutrient content. Plant-associated microbes can compete with the plant and with each other for nutrients, but may also carry traits that increase the productivity of the plant. It is unknown how the plant immune system coordinates microbial recognition with nutritional cues during microbiome assembly. Here we establish that a genetic network controlling the phosphate stress response influences the structure of the root microbiome community, even under non-stress phosphate conditions...
March 15, 2017: Nature
https://www.readbyqxmd.com/read/28296287/bio-inspired-nanomedicine-strategies-for-artificial-blood-components
#13
REVIEW
Anirban Sen Gupta
Blood is a fluid connective tissue where living cells are suspended in noncellular liquid matrix. The cellular components of blood render gas exchange (RBCs), immune surveillance (WBCs) and hemostatic responses (platelets), and the noncellular components (salts, proteins, etc.) provide nutrition to various tissues in the body. Dysfunction and deficiencies in these blood components can lead to significant tissue morbidity and mortality. Consequently, transfusion of whole blood or its components is a clinical mainstay in the management of trauma, surgery, myelosuppression, and congenital blood disorders...
March 15, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28296004/nitrogen-modulation-of-medicago-truncatula-resistance-to-aphanomyces-euteiches-depends-on-plant-genotype
#14
Elise Thalineau, Carine Fournier, Antoine Gravot, David Wendehenne, Sylvain Jeandroz, Hoai-Nam Truong
Nitrogen (N) availability can impact plant resistance to pathogens by regulating plant immunity. To better understand the links between N nutrition and plant defence, we analysed the impact of N availability on Medicago truncatula resistance to the root pathogen Aphanomyces euteiches. This oomycete is considered as the most limiting factor for legume production. Ten plant genotypes were tested in vitro for their resistance to A. euteiches in either complete or N-deficient medium. N-deficiency led to enhanced or reduced susceptibility depending on plant genotype...
March 15, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28294170/exploring-inter-organ-crosstalk-to-uncover-mechanisms-that-regulate-%C3%AE-cell-function-and-mass
#15
REVIEW
J Shirakawa, D F De Jesus, R N Kulkarni
Impaired β-cell function and insufficient β-cell mass compensation are twin pathogenic features that underlie type 2 diabetes (T2D). Current therapeutic strategies continue to evolve to improve treatment outcomes in different ethnic populations and include approaches to counter insulin resistance and improve β-cell function. Although the effects of insulin secretion on metabolic organs such as liver, skeletal muscle and adipose is directly relevant for improving glucose uptake and reduce hyperglycemia, the ability of pancreatic β-cells to crosstalk with multiple non-metabolic tissues is providing novel insights into potential opportunities for improving β-cell function and/or mass that could have beneficial effects in patients with diabetes...
March 15, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28294088/an-update-on-diet-and-nutritional-factors-in-systemic-lupus-erythematosus-management
#16
Marina Aparicio-Soto, Marina Sánchez-Hidalgo, Catalina Alarcón-de-la-Lastra
Systemic lupus erythematosus (SLE) is a chronic inflammatory and autoimmune disease characterised by multiple organ involvement and a large number of complications. SLE management remains complicated owing to the biological heterogeneity between patients and the lack of safe and specific targeted therapies. There is evidence that dietary factors can contribute to the geoepidemiology of autoimmune diseases such as SLE. Thus, diet therapy could be a promising approach in SLE owing to both its potential prophylactic effects, without the side effects of classical pharmacology, and its contribution to reducing co-morbidities and improving quality of life in patients with SLE...
March 15, 2017: Nutrition Research Reviews
https://www.readbyqxmd.com/read/28290522/nutritional-control-of-il-23-th17-mediated-autoimmune-disease-through-ho-1-stat3-activation
#17
Jürgen Brück, Julia Holstein, Ivana Glocova, Ursula Seidel, Julia Geisel, Toshio Kanno, Jin Kumagai, Naoko Mato, Stephan Sudowe, Katja Widmaier, Tobias Sinnberg, Amir S Yazdi, Franziska C Eberle, Kiyoshi Hirahara, Toshinori Nakayama, Martin Röcken, Kamran Ghoreschi
The nutritional curcumin (CUR) is beneficial in cell-mediated autoimmune diseases. The molecular mechanisms underlying this food-mediated silencing of inflammatory immune responses are poorly understood. By investigating antigen-specific immune responses we found that dietary CUR impairs the differentiation of Th1/Th17 cells in vivo during encephalomyelitis and instead promoted Th2 cells. In contrast, feeding CUR had no inhibitory effect on ovalbumin-induced airway inflammation. Mechanistically, we found that CUR induces an anti-inflammatory phenotype in dendritic cells (DC) with enhanced STAT3 phosphorylation and suppressed expression of Il12b and Il23a...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28290237/multiple-nutritional-factors-and-the-risk-of-hashimoto-s-thyroiditis
#18
Shiqian Hu, Margaret P Rayman
Background Hashimoto's Thyroiditis (HT) is considered to be the most common autoimmune disease. It is currently accepted that genetic susceptibility, environmental factors and immune disorders contribute to its development. Regarding nutritional factors, evidence implicates high iodine intake, deficiencies of selenium and iron with a potential relevance of vitamin D status. To elucidate the role of nutritional factors in the risk, pathogenesis and treatment of Hashimoto's Thyroiditis (HT), PubMed and the Cochrane Library were searched for publications on iodine, iron, selenium and vitamin D and risk/treatment of HT...
March 14, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28288763/can-the-amount-of-digestible-undegraded-protein-offered-to-ewes-during-late-pregnancy-affect-the-performance-and-immune-response-of-their-offspring-to-gastrointestinal-nematodes
#19
Rocco S Sebastiano, Torres Sweeney, Barbara Good, James P Hanrahan, Timothy W J Keady
Maternal nutrition during pregnancy is a major environmental influence on foetal development with consequent effects on postnatal performance. We hypothesised that the level of intake of digestible undegraded protein (DUP) by the dam in late pregnancy would impact on the effectiveness of the immune response by offspring to gastrointestinal nematode infection. Eighty-five twin/triplet-bearing ewes, which were indoors from mid-pregnancy, were randomly assigned to 4 treatment groups for the final 6 weeks of pregnancy...
March 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28288591/correlates-of-thymus-size-and-changes-during-treatment-of-children-with-severe-acute-malnutrition-a-cohort-study
#20
Maren Johanne Heilskov Rytter, Hanifa Namusoke, Christian Ritz, Kim F Michaelsen, André Briend, Henrik Friis, Dorthe Jeppesen
BACKGROUND: The impairment of immune functions associated with malnutrition may be one reason for the high mortality in children with severe acute malnutrition (SAM), and thymus atrophy has been proposed as a marker of this immunodeficiency. The aim of this study was to identify nutritional and clinical correlates of thymus size in children with SAM, and predictors of change in thymus size with nutritional rehabilitation. METHODS: In an observational study among children aged 6-59 months admitted with SAM in Uganda, we measured thymus area by ultrasound on hospital admission to treatment with F75 and F100, on hospital discharge and after 8 weeks of nutritional rehabilitation with ready-to-use therapeutic food, as well as in well-nourished healthy children...
March 14, 2017: BMC Pediatrics
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