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https://www.readbyqxmd.com/read/29186856/zinc-as-a-gatekeeper-of-immune-function
#1
REVIEW
Inga Wessels, Martina Maywald, Lothar Rink
After the discovery of zinc deficiency in the 1960s, it soon became clear that zinc is essential for the function of the immune system. Zinc ions are involved in regulating intracellular signaling pathways in innate and adaptive immune cells. Zinc homeostasis is largely controlled via the expression and action of zinc "importers" (ZIP 1-14), zinc "exporters" (ZnT 1-10), and zinc-binding proteins. Anti-inflammatory and anti-oxidant properties of zinc have long been documented, however, underlying mechanisms are still not entirely clear...
November 25, 2017: Nutrients
https://www.readbyqxmd.com/read/29166952/effects-of-dietary-live-yeast-supplementation-on-growth-performance-diarrhoea-severity-intestinal-permeability-and-immunological-parameters-of-weaned-piglets-challenged-with-enterotoxigenic-escherichia-coli-k88
#2
Lianqiang Che, Qin Xu, Cheng Wu, Yuheng Luo, Xiaobo Huang, Bo Zhang, Eric Auclair, Tadele Kiros, Zhengfeng Fang, Yan Lin, Shengyu Xu, Bin Feng, Jian Li, De Wu
This study aimed to investigate the effects of dietary live yeast (LY) supplementation on growth, intestinal permeability and immunological parameters of piglets challenged with enterotoxigenic Escherichia coli K88 (ETEC). Piglets weaned at 21 d were allocated into three treatments with six pens and six piglets per pen, receiving the control diet (CON), diets supplemented with antibiotics plus zinc oxide (ANT-ZnO) and LY (Saccharomyces cerevisiae strain CNCM I-4407), respectively, for a period of 2 weeks. On day 8, thirty-six piglets were selected as control without ETEC (CON), CON-ETEC, ANT-ZnO-ETEC and LY-ETEC groups challenged with ETEC until day 10 for sample collections...
November 23, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29153154/a-100-year-review-from-ascorbic-acid-to-zinc-mineral-and-vitamin-nutrition-of-dairy-cows
#3
W P Weiss
Mineral and vitamin nutrition of dairy cows was studied before the first volume of the Journal of Dairy Science was published and is still actively researched today. The initial studies on mineral nutrition of dairy cows were simple balance experiments (although the methods available at the time for measuring minerals were anything but simple). Output of Ca and P in feces, urine, and milk was subtracted from intake of Ca and P, and if values were negative it was often assumed that cows were lacking in the particular mineral...
December 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29072367/reappraisal-of-metallothionein-clinical-implications-for-patients-with-diabetes-mellitus
#4
REVIEW
Yongsoo Park, Jian Zhang, Lu Cai
Reactive oxygen and nitrogen species (ROS/RNS) are by-products of cellular physiological processes made from the metabolisms of intermediary nutrients. Although physiological defense mechanisms readily convert these species into water or urea, improper balance between their production and removal leads cells to experience oxidative stress (OS), which is harmful to cellular components. This may result in uncontrolled growth or ultimately to cell death. ROS/RNS are also closely related to the development of diabetes and its complications...
October 26, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/29062223/enhancing-the-efficacy-of-areds-antioxidants-in-light-induced-retinal-degeneration
#5
Paul Wong, M Markey, C M Rapp, R M Darrow, A Ziesel, D T Organisciak
PURPOSE: Light-induced photoreceptor cell degeneration and disease progression in age-related macular degeneration (AMD) involve oxidative stress and visual cell loss, which can be prevented, or slowed, by antioxidants. Our goal was to test the protective efficacy of a traditional Age-related Eye Disease Study antioxidant formulation (AREDS) and AREDS combined with non-traditional antioxidants in a preclinical animal model of photooxidative retinal damage. METHODS: Male Sprague-Dawley rats were reared in a low-intensity (20 lux) or high-intensity (200 lux) cyclic light environment for 6 weeks...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29057818/chronic-high-dose-zinc-supplementation-induces-visceral-adipose-tissue-hypertrophy-without-altering-body-weight-in-mice
#6
Xiaohua Huang, Dandan Jiang, Yingguo Zhu, Zhengfeng Fang, Lianqiang Che, Yan Lin, Shengyu Xu, Jian Li, Chao Huang, Yuanfeng Zou, Lixia Li, De Wu, Bin Feng
The trace element zinc plays an important role in human life. Zinc deficiency impairs growth, reproduction, metabolism and immunity in both human and animals. Thus, zinc supplementation is recommended in daily life. However, the effect of long-term chronic zinc supplementation on adipose homeostasis has not been well elucidated. In the current study, mice were supplemented with zinc sulfate in the drinking water for 20 weeks. The results suggested that chronic zinc supplementation impaired systemic glucose clearance after exogenous insulin or glucose challenges, as compared to the control mice...
October 18, 2017: Nutrients
https://www.readbyqxmd.com/read/29057661/the-effect-of-zinc-and-melatonin-supplementation-on-immunity-parameters-in-breast-cancer-induced-by-dmba-in-rats
#7
Saltuk Bugra Baltaci, Rasim Mogulkoc, Abdulkerim Kasim Baltaci, Ayca Emsen, Hasibe Artac
OBJECTIVE: The aim of the study was to determine the effects of zinc and melatonin supplements on the immunity parameters of female rats with breast cancer induced by DMBA. METHODS: Group 1; Control, Group 2; 7,12-dimethylbenz[a]anthracene (DMBA), Group 3; DMBA + zinc, Group 4; DMBA + melatonin, Group 5; DMBA + zinc + melatonin. The rats' breast cancer was induced by DMBA 80 mg/kg. Groups 3-5 received daily 5 mg/kg doses of zinc, melatonin, and zinc + melatonin, respectively...
October 23, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29053870/effects-of-hydroxychloride-and-sulfate-form-of-zinc-and-manganese-supplementation-on-superoxide-dismutase-activity-and-immune-responses-post-lipopolysaccharide-challenge-in-poultry-fed-marginally-lower-doses-of-zinc-and-manganese
#8
V Perez, R Shanmugasundaram, M Sifri, T M Parr, R K Selvaraj
Effects of hydroxychloride (OHCl) and sulfate form of zinc and manganese supplementation on immune responses of birds fed marginally lower levels of zinc and manganese during an experimental lipopolysaccharide (LPS) injection were studied. In experiment I, 30-week-old layer birds were fed 50 mg/kg Zn+45 mg/kg Mn or 100 mg/kg Zn+90 mg/kg Mn in sulfate or OHCl form and injected with 0 or 500 μg/kg LPS in a 2 (50 mg Zn+45 mg Mn and 100 mg Zn+90 mg Mn) X 2 (sulfate and OHCl) X 2 (0 and 500 μg LPS) factorial setup of treatments for 10 weeks...
September 14, 2017: Poultry Science
https://www.readbyqxmd.com/read/29053834/effect-of-feed-supplementation-with-zinc-glycine-chelate-and-zinc-sulfate-on-cytokine-and-immunoglobulin-gene-expression-profiles-in-chicken-intestinal-tissue
#9
L Jarosz, A Marek, Z Gradzki, M Kwiecien, B Zylinska, B Kaczmarek
The aim of the study was to evaluate the effect of inorganic and organic forms of Zn on the expression of cytokines (IL-2, TNF-α, IFN-γ, IL-12, IL-17, IL-4, IL-10, and TGF-β) and immunoglobulins (IgA and IgG) in the tissues of the small intestine (jejunum and ileum) of broiler chickens. In the experiment, 90 broiler chickens were divided into 4 experimental groups and a control group, with 18 birds each. The birds received Zn supplements in inorganic form with and without phytase (ZnSO4 and ZnSO4 + F), and in organic form with glycine, with and without phytase (Zn-Gly and Zn-Gly + F)...
October 5, 2017: Poultry Science
https://www.readbyqxmd.com/read/29032059/is-the-adaptive-immune-response-in-murine-trypanosoma-cruzi-infection-influenced-by-zinc-supplementation
#10
Cássia Mariana Bronzon da Costa, Marina Del Vecchio Filipin, Fabrícia Helena Santello, Luiz Miguel Pereira, Miriam Paula Alonso Toldo, José Clóvis do Prado Júnior, Ana Amélia Carraro Abrahão
Chagas disease afflicts 7 to 8 million people worldwide and congenital Chagas' disease usually leads to changes in the maternal environment, culminating in fetal adaptations. Several articles have described the importance of micronutrients on pregnancy, which is sensitive to infections. In Trypanosoma cruzi endemic regions, the Chagas disease is aggravated by the lack of micronutrients in an average diet, to which pregnant women are more susceptible. The aim of this study was to evaluate distinct T cells phenotypes and intracellular cytokines by flow cytometry in pregnant Wistar rats under zinc therapy during experimental Chagas' disease...
October 12, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28990230/response-of-in-ovo-administration-of-zinc-on-egg-hatchability-and-immune-response-of-commercial-broiler-chicken
#11
N Jose, A V Elangovan, V B Awachat, D Shet, J Ghosh, C G David
An experiment was conducted to determine the effect of in ovo administration of different forms of zinc with respect to hatchability and performance of commercial broiler chicken. In trial 1, the fertile eggs on day 18 were divided into six treatment groups: Group I as control without any supplementation of zinc, group II to IV were supplemented with 0.5 mg zinc per egg as zinc sulphate, zinc methionine or nano zinc, respectively, and Group V with nano zinc at 0.25 mg zinc per egg. Sixth group received 0...
October 8, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28988580/development-prevention-and-treatment-of-alcohol-induced-organ-injury-the-role-of-nutrition
#12
Shirish Barve, Shao-Yu Chen, Irina Kirpich, Walter H Watson, Craig Mcclain
Alcohol and nutrition have the potential to interact at multiple levels. For example, heavy alcohol consumption can interfere with normal nutrition, resulting in overall malnutrition or in deficiencies of important micronutrients, such as zinc, by reducing their absorption or increasing their loss. Interactions between alcohol consumption and nutrition also can affect epigenetic regulation of gene expression by influencing multiple regulatory mechanisms, including methylation and acetylation of histone proteins and DNA...
2017: Alcohol Research: Current Reviews
https://www.readbyqxmd.com/read/28912361/impact-of-sleep-restriction-on-local-immune-response-and-skin-barrier-restoration-with-and-without-multi-nutrient-nutrition-intervention
#13
Tracey J Smith, Marques A Wilson, J Philip Karl, Jeb Orr, Carl D Smith, Adam D Cooper, Kristin J Heaton, Andrew J Young, Scott J Montain
Systemic immune function is impaired by sleep restriction. However, the impact of sleep restriction on local immune responses, and to what extent any impairment can be mitigated by nutritional supplementation is unknown. We assessed the effect of 72-h sleep restriction (2-h nightly sleep) on local immune function and skin barrier restoration of an experimental wound, and determined the influence of habitual protein intake (1.5 g·kg(-1)·d(-1)) supplemented with arginine, glutamine, zinc sulfate, vitamin C, vitamin D3 and omega-3 fatty acids compared to lower protein intake (0...
September 14, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28882485/zinc-chloride-rapidly-stimulates-efflux-transporters-in-renal-proximal-tubules-of-killifish-fundulus-heteroclitus
#14
Alexander Zaremba, David S Miller, Gert Fricker
Multidrug resistance-related protein 2 (Mrp2) is an ATP-driven efflux pump at the luminal membrane in renal proximal tubules. It acts as detoxification mechanism by transporting xenobiotics and metabolic products into urine. The trace element zinc is essential for cellular growth, differentiation and survival. It modulates immune response and is used as dietary supplement. Here, we found that 0.1-10μM ZnCl2 rapidly stimulated transport of the Mrp2 probe substrate Texas Red (TR) in isolated killifish renal proximal tubules, which provide an established model system to measure efflux transporter activity by using fluorescent probe substrates, confocal microscopy and image analysis...
November 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28874323/the-effect-of-probiotics-and-zinc-supplementation-on-the-immune-response-to-oral-rotavirus-vaccine-a-randomized-factorial-design-placebo-controlled-study-among-indian-infants
#15
Robin P Lazarus, Jacob John, E Shanmugasundaram, Anand K Rajan, S Thiagarajan, Sidhartha Giri, Sudhir Babji, Rajiv Sarkar, P Saravankumar Kaliappan, Srinivasan Venugopal, Ira Praharaj, Uma Raman, Meghana Paranjpe, Nicholas C Grassly, Edward P K Parker, Umesh D Parashar, Jacqueline E Tate, Jessica A Fleming, A Duncan Steele, Jayaprakash Muliyil, Asha M Abraham, Gagandeep Kang
BACKGROUND: Strategies are needed to improve oral rotavirus vaccine (RV), which provides suboptimal protection in developing countries. Probiotics and zinc supplementation could improve RV immunogenicity by altering the intestinal microbiota and immune function. METHODS: Infants 5weeks old living in urban Vellore, India were enrolled in a randomized, double-blind, placebo-controlled trial with a 4-arm factorial design to assess the effects of daily zinc (5mg), probiotic (10(10)Lactobacillus rhamnosus GG) or placebo on the immunogenicity of two doses of RV (Rotarix®, GlaxoSmithKline Biologicals) given at 6 and 10weeks of age...
September 2, 2017: Vaccine
https://www.readbyqxmd.com/read/28819948/the-role-of-selenium-in-thyroid-gland-pathophysiology
#16
Michał Stuss, Marta Michalska-Kasiczak, Ewa Sewerynek
It is now assumed that proper functioning of the thyroid gland (TG), beside iodine, requires also a number of elements, including selenium, iron, zinc, copper, and calcium. In many cases, only an adequate supply of one of these microelements (e.g. iodine) may reveal symptoms resulting from deficits of other microelements (e.g. iron or selenium). Selenium is accounted to the trace elements of key importance for homeostasis of the human system, in particular, for the proper functioning of the immune system and the TG...
2017: Endokrynologia Polska
https://www.readbyqxmd.com/read/28736909/a-double-blinded-randomized-controlled-crossover-evaluation-of-a-zinc-methionine-supplement-as-an-adjunctive-treatment-for-canine-atopic-dermatitis
#17
Rendina A McFadden, Nicole A Heinrich, Amy C Haarstad, Dana J Tomlinson
BACKGROUND: Zinc is important for skin health and proper immune system function. HYPOTHESIS/OBJECTIVES: A zinc methionine, essential fatty acids (EFA) and biotin product (Zn supplement) was compared to an EFA and biotin product (control) in canine atopic dermatitis (CAD). ANIMALS: Twenty seven client-owned dogs with chronic CAD receiving ciclosporin or glucocorticoids. METHODS: A 24 week, randomized, double-blinded, controlled study with crossover at week 12 and 4 week period of allergy medication reduction at weeks 8 and 20...
July 23, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28727032/probiotic-supplementation-protects-weaned-pigs-against-enterotoxigenic-escherichia-coli-k88-challenge-and-improves-performance-similar-to-antibiotics
#18
L Pan, P F Zhao, X K Ma, Q H Shang, Y T Xu, S F Long, Y Wu, F M Yuan, X S Piao
These studies evaluated the effects of probiotics (PB) as a potential substitute for antibiotics (AB) on diarrhea in relation to immune responses and intestinal health in weaned pigs challenged with enterotoxigenic (ETEC) K88 (Exp. 1) and the effects of PB on performance and nutrient digestibility in weaned pigs (Exp. 2). In Exp. 1, 24 weaned barrows (4.9 ± 0.4 kg initial BW) were randomly assigned to 1 of 4 treatments. The treatments consisted of pigs fed an unsupplemented corn-soybean meal basal diet and not challenged (NON-C) or challenged with ETEC K88 (CHA-C) on d 9 and pigs fed the same basal diet supplemented with AB (100 mg/kg zinc bacitracin, 50 mg/kg colistin sulfate, and 100 mg/kg olaquindox; CHA-AB) or 500 mg/kg PB ( and ; CHA-PB) and challenged with ETEC K88 on d 9...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28712490/pneumococcal-vaccination-for-splenectomized-patients-with-thalassemia-major-in-indonesia
#19
Teny Tjitra Sari, Arwin Ali P Akib, Djajadiman Gatot, Alida Roswita Harahap, Saptawati Bardosono, Sri Rezeki S Hadinegoro
INTRODUCTION: Streptococcus pneumoniae is a capsulated bacterium that can cause severe infection in patients with thalassemia major, particularly those who have undergone splenectomy. The absence of the spleen as well as zinc deficiency in splenectomized patients with thalassemia major increases the possibility of developing invasive pneumococcal infection. The aims of this study are to evaluate pneumococcal IgG levels following PCV and PPV immunizations and the effect of zinc supplementation on qualitative specific immune responses in splenectomized patients with thalassemia...
July 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28687933/cellular-zinc-homeostasis-modulates-polarization-of-thp-1-derived-macrophages
#20
Laura Dierichs, Veronika Kloubert, Lothar Rink
PURPOSE: Polarization of macrophages by environmental stimuli leads to the characteristic of different phenotypes that exhibit distinct functions, ranging in a continuous spectrum from pro-inflammatory M1 up to immunoregulatory and wound-healing M2 macrophages. Diseases like cancer, allergic asthma or diabetes are associated with an M1/M2 imbalance. Owing to the importance of the essential trace element zinc for the immune system and its involvement in signal transduction as a second messenger, we investigated the impact of zinc on M1 and M2 polarization of macrophages in vitro...
July 7, 2017: European Journal of Nutrition
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