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Zinc deficience

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https://www.readbyqxmd.com/read/28428219/deficiency-of-cholesteryl-ester-transfer-protein-protects-against-atherosclerosis-in-rabbits
#1
Jifeng Zhang, Manabu Niimi, Dongshan Yang, Jingyan Liang, Jie Xu, Tokuhide Kimura, Anna V Mattew, Yanhong Guo, Yanbo Fan, Tianqing Zhu, Jun Song, Rose Ackermann, Yui Koike, Anna Schwendeman, Liangxue Lai, Subramaniam Pennathur, Minerva Garcia-Barrio, Jianglin Fan, Y Eugene Chen
OBJECTIVE: CETP (cholesteryl ester transfer protein) plays an important role in lipoprotein metabolism; however, whether inhibition of CETP activity can prevent cardiovascular disease remains controversial. APPROACH AND RESULTS: We generated CETP knockout (KO) rabbits by zinc finger nuclease gene editing and compared their susceptibility to cholesterol diet-induced atherosclerosis to that of wild-type (WT) rabbits. On a chow diet, KO rabbits showed higher plasma levels of high-density lipoprotein (HDL) cholesterol than WT controls, and HDL particles of KO rabbits were essentially rich in apolipoprotein AI and apolipoprotein E contents...
April 20, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28427009/early-in-life-dietary-zinc-deficiency-and-supplementation-and-mammary-tumor-development-in-adulthood-female-rats
#2
Flávia R M da Silva, Tony F Grassi, Joyce R Zapaterini, Lucas T Bidinotto, Luis F Barbisan
Zinc deficiency during pregnancy and postnatal life can adversely increase risk of developing human diseases at adulthood. The present study was designed to evaluate whether dietary zinc deficiency or supplementation during the pregnancy, lactation and juvenile stages interferes in the development of mammary tumors induced by 7,12-dimethylbenzanthracene (DMBA) in female Sprague-Dawley (SD) rats. Pregnant female SD rats were allocated into three groups: zinc-adequate diet (ZnA - 35-mg/kg chow), zinc-deficient diet (ZnD - 3-mg/kg chow) or zinc-supplemented diet (ZnS - 180-mg/kg chow) during gestational day 10 (GD 10) until the litters' weaning...
April 1, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28424257/an-animal-source-food-supplement-increases-micronutrient-intakes-and-iron-status-among-reproductive-age-women-in-rural-vietnam
#3
Andrew G Hall, Tu Ngu, Hoang T Nga, Phi N Quyen, Pham T Hong Anh, Janet C King
Background: Few studies have examined the impact of local animal-source foods (ASFs) on the nutritional status of reproductive-age women in developing countries.Objective: We hypothesized that a midmorning snack of local ASF for 6 mo would reduce dietary micronutrient deficiencies [usual intake less than the estimated average requirement (EAR)] and improve blood biomarkers of iron, zinc, and vitamins A and B-12 status among nonpregnant, reproductive-age women in rural Vietnam.Methods: One hundred seventeen women, 18-30 y old, were randomly assigned to receive either an ASF (mean: 144 kcal, 8...
April 19, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28421879/dna-methylation-mechanism-of-intracellular-zinc-deficiency-induced-injury-in-primary-hippocampal-neurons-in-the-rat-brain
#4
Cong-Cong He, Zi-Yu Wang, Kun Tian, Wei Liu, Yi-Bo Li, Yan Hong, Li-Xia Yu, Wei Pang, Yu-Gang Jiang, Yan-Qiang Liu
OBJECTIVE: To explore Zn(2+) deficiency-induced neuronal injury in relation to DNA methylation, providing valuable data and basic information for clarifying the mechanism of Zn(2+) deficiency-induced neuronal injury. METHODS: Cultured hippocampal neurons were exposed to the cell membrane-permeant Zn(2+) chelator N,N,N',N'-Tetrakis (2-pyridylmethyl) ethylenediamine (TPEN) (2 μM), and to TPEN (2 μM) plus ZnSO4 (5 μM) for 24 hours. We analyzed intracellular Zn(2+) levels, neuronal viability, and protein/mRNA levels for DNA (cytosine-5) methyltransferase 1 (DNMT1), DNA (cytosine-5-) methyltransferase 3 alpha (DNMT3a), methyl CpG binding protein 2 (MeCP2), Brain-derived neurotrophic factor (BDNF), and growth arrest and DNA-damage-inducible, beta (GADD45b) in the treated neurons...
April 19, 2017: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28420205/do-chinese-children-get-enough-micronutrients
#5
Huijun Wang, Dantong Wang, Yifei Ouyang, Feifei Huang, Gangqiang Ding, Bing Zhang
The aim of this study was to examine usual daily micronutrient intake of Chinese children based on data from the 2011 China Health and Nutrition Survey. We analyzed data from 4 to 17-year-old participants, who provided dietary data on three consecutive days combined with the household weighing method in 2011. Usual daily intake of each nutrient was estimated using a mixed effects model based on the China Food Composition published in 2009. The means, medians and percentages below Estimated Average Requirements (EAR) were reported for selected micronutrients, including calcium, sodium, potassium, iron, zinc, selenium, vitamin A, thiamine, riboflavin and vitamin C...
April 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28416650/epigenetic-regulator-cxxc5-recruits-dna-demethylase-tet2-to-regulate-tlr7-9-elicited-ifn-response-in-pdcs
#6
Shixin Ma, Xiaoling Wan, Zihou Deng, Lei Shi, Congfang Hao, Zhenyuan Zhou, Chun Zhou, Yiyuan Fang, Jinghua Liu, Jing Yang, Xia Chen, Tiantian Li, Aiping Zang, Shigang Yin, Bin Li, Joel Plumas, Laurence Chaperot, Xiaoming Zhang, Guoliang Xu, Lubin Jiang, Nan Shen, Sidong Xiong, Xiaoming Gao, Yan Zhang, Hui Xiao
TLR7/9 signals are capable of mounting massive interferon (IFN) response in plasmacytoid dendritic cells (pDCs) immediately after viral infection, yet the involvement of epigenetic regulation in this process has not been documented. Here, we report that zinc finger CXXC family epigenetic regulator CXXC5 is highly expressed in pDCs, where it plays a crucial role in TLR7/9- and virus-induced IFN response. Notably, genetic ablation of CXXC5 resulted in aberrant methylation of the CpG-containing island (CGI) within the Irf7 gene and impaired IRF7 expression in steady-state pDCs...
April 17, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28413565/enrichment-of-in-vivo-transcription-data-from-dietary-intervention-studies-with-in-vitro-data-provides-improved-insight-into-gene-regulation-mechanisms-in-the-intestinal-mucosa
#7
Marcel Hulst, Alfons Jansman, Ilonka Wijers, Arjan Hoekman, Stéphanie Vastenhouw, Marinus van Krimpen, Mari Smits, Dirkjan Schokker
BACKGROUND: Gene expression profiles of intestinal mucosa of chickens and pigs fed over long-term periods (days/weeks) with a diet rich in rye and a diet supplemented with zinc, respectively, or of chickens after a one-day amoxicillin treatment of chickens, were recorded recently. Such dietary interventions are frequently used to modulate animal performance or therapeutically for monogastric livestock. In this study, changes in gene expression induced by these three interventions in cultured "Intestinal Porcine Epithelial Cells" (IPEC-J2) recorded after a short-term period of 2 and 6 hours, were compared to the in vivo gene expression profiles in order to evaluate the capability of this in vitro bioassay in predicting in vivo responses...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/28401935/unique-invariant-natural-killer-t-cells-promote-intestinal-polyps-by-suppressing-th1-immunity-and-promoting-regulatory-t-cells
#8
Y Wang, S Sedimbi, L Löfbom, A K Singh, S A Porcelli, S L Cardell
CD1d-restricted invariant natural killer T (iNKT) cells are known as potent early regulatory cells of immune responses. Besides the established roles in the regulation of inflammation and autoimmune disease, studies have shown that iNKT cells have important roles in tumor surveillance and the control of tumor metastasis. Here we found that the absence of iNKT cells markedly decreased the total number of intestinal polyps in APC(Min/+) mice, a model for colorectal cancer. Polyp iNKT cells were enriched for interleukin-10 (IL-10)- and IL-17-producing cells, showed a distinct phenotype being CD4(+), NK1...
April 12, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28401081/zinc-in-pancreatic-islet-biology-insulin-sensitivity-and-diabetes
#9
REVIEW
Wolfgang Maret
About 20 chemical elements are nutritionally essential for humans with defined molecular functions. Several essential and nonessential biometals are either functional nutrients with antidiabetic actions or can be diabetogenic. A key question remains whether changes in the metabolism of biometals and biominerals are a consequence of diabetes or are involved in its etiology. Exploration of the roles of zinc (Zn) in this regard is most revealing because 80 years of scientific discoveries link zinc and diabetes...
March 2017: Preventive Nutrition and Food Science
https://www.readbyqxmd.com/read/28399577/drug-development-concepts-as-guides-for-optimizing-clinical-trials-of-supplemental-zinc-for-populations-at-risk-of-deficiency-or-diarrhea
#10
David H Alpers, Graeme P Young, Cuong D Tran, Elissa K Mortimer, Geetha L Gopalsamy, Nancy F Krebs, Mark J Manary, Balakrishnan S Ramakrishna, Henry J Binder, Ian L Brown, Leland V Miller
Studies on the efficacy of zinc supplementation for treatment or prevention of diarrhea have shown an inconsistent effect in populations at risk for zinc deficiency. Unlike drugs, which have no preexisting presence in the body, endogenous zinc must be assessed pharmacokinetically by isotope tracer studies. Although such methods have produced much data, very few studies have estimated the dose and the timing of dosing of zinc supplementation. This review examines drug kinetics used to establish the best dose, the timing of such doses, and the mechanism of action through pharmacodynamic markers and applies them, where possible, to zinc supplements...
March 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28399168/global-trends-in-dietary-micronutrient-supplies-and-estimated-prevalence-of-inadequate-intakes
#11
Ty Beal, Eric Massiot, Joanne E Arsenault, Matthew R Smith, Robert J Hijmans
Understanding dietary patterns is vital to reducing the number of people experiencing hunger (about 795 million), micronutrient deficiencies (2 billion), and overweight or obesity (2.1 billion). We characterize global trends in dietary quality by estimating micronutrient density of the food supply, prevalence of inadequate intake of 14 micronutrients, and average prevalence of inadequate intake of these micronutrients for all countries between 1961 and 2011. Over this 50-year period, the estimated prevalence of inadequate intakes of micronutrients has declined in all regions due to increased total production of food and/or micronutrient density...
2017: PloS One
https://www.readbyqxmd.com/read/28395334/natural-killer-cell-deficiency-alters-placental-development-in-rats
#12
Stephen J Renaud, Regan L Scott, Damayanti Chakraborty, Mohammad A K Rumi, Michael J Soares
Natural killer (NK) cells are the most prevalent leukocyte population in the uterus during early pregnancy. Natural killer cells contribute to uterine vascular (spiral artery) remodeling in preparation for the increased demand on these vessels later in pregnancy. A second wave of spiral artery modification is directed by invasive trophoblast cells. The significance of the initial wave of NK-cell-mediated vascular remodeling in species exhibiting deep trophoblast invasion such as humans and rats is not known...
January 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28392254/american-society-for-metabolic-and-bariatric-surgery-integrated-health-nutritional-guidelines-for-the-surgical-weight-loss-patient-2016-update-micronutrients
#13
Julie Parrott, Laura Frank, Rebecca Rabena, Lillian Craggs-Dino, Kellene A Isom, Laura Greiman
BACKGROUND: Optimizing postoperative patient outcomes and nutritional status begins preoperatively. Patients should be educated before and after weight loss surgery (WLS) on the expected nutrient deficiencies associated with alterations in physiology. Although surgery can exacerbate preexisting nutrient deficiencies, preoperative screening for vitamin deficiencies has not been the norm in the majority of WLS practices. Screening is important because it is common for patients who present for WLS to have at least 1 vitamin or mineral deficiency preoperatively...
January 19, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28390585/biomarkers-of-oxidative-stress-and-antioxidants-in-severe-asthma-a-prospective-case-control-study
#14
Abigail Bishopp, Ramamurthy Sathyamurthy, Sarah Manney, Craig Webbster, Mamidipudi Thirumala Krishna, Adel H Mansur
BACKGROUND: Bronchial airway inflammation is the hallmark of asthma, which may be driven by an imbalance between oxidative stress and antioxidant defenses. Antioxidants deficiency may play a role, but this has remained unconfirmed. OBJECTIVE: To evaluate the oxidative stress burden and antioxidants defenses in patients with increasing asthma severity. METHODS: This prospective case-control study compared fractional exhaled nitric oxide (FeNO), exhaled breath condensate nitrite/nitrate (EBC-NOx), spirometry, and serum vitamins and trace elements among patients with and without asthma...
April 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28388674/variation-in-the-mineral-element-concentration-of-moringa-oleifera-lam-and-m-stenopetala-bak-f-cuf-role-in-human-nutrition
#15
Diriba B Kumssa, Edward Jm Joy, Scott D Young, David W Odee, E Louise Ander, Martin R Broadley
BACKGROUND: Moringa oleifera (MO) and M. stenopetala (MS) (family Moringaceae; order Brassicales) are multipurpose tree/shrub species. They thrive under marginal environmental conditions and produce nutritious edible parts. The aim of this study was to determine the mineral composition of different parts of MO and MS growing in their natural environments and their potential role in alleviating human mineral micronutrient deficiencies (MND) in sub-Saharan Africa. METHODS: Edible parts of MO (n = 146) and MS (n = 50), co-occurring cereals/vegetables and soils (n = 95) underneath their canopy were sampled from localities in southern Ethiopia and Kenya...
2017: PloS One
https://www.readbyqxmd.com/read/28383555/zeb1-induces-er-%C3%AE-promoter-hypermethylation-and-confers-antiestrogen-resistance-in-breast-cancer
#16
Jianbo Zhang, Chen Zhou, Huimin Jiang, Lin Liang, Wen Shi, Quansheng Zhang, Peiqing Sun, Rong Xiang, Yue Wang, Shuang Yang
Antiestrogen resistance is a major obstacle to endocrine therapy for breast cancers. Although reduced estrogen receptor-α (ER-α) expression is a known contributing factor to antiestrogen resistance, the mechanisms of ER-α downregulation in antiestrogen resistance are not fully understood. Here, we report that ectopic zinc-finger E-box binding homeobox 1 (ZEB1) is associated with ER-α deficiency in breast cancer cells and thus confers antiestrogen resistance. Mechanistically, ZEB1 represses ER-α transcription by forming a ZEB1/DNA methyltransferase (DNMT)3B/histone deacetylase (HDAC)1 complex on the ER-α promoter, leading to DNA hypermethylation and the silencing of ER-α...
April 6, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28374117/virtual-screening-for-potential-inhibitors-of-ctx-m-15-protein-of-klebsiella-pneumoniae
#17
Tayebeh Farhadi, Atefeh Fakharian, Roman S Ovchinnikov
The Gram-negative bacterium Klebsiella pneumoniae, responsible for a wide variety of nosocomial infections in immuno-deficient patients, involves the respiratory, urinary and gastrointestinal tract infections and septicemia. Extended spectrum β-lactamases (ESBL) belong to β-lactamases capable of conferring antibiotic resistance in Gram-negative bacteria. CTX-M-15, a prevalent ESBL reported from Enterobacteriaceae including K. pneumoniae, was selected as a potent anti-bacterial target. To identify the novel drug-like compounds, structure-based screening procedure was employed against downloaded drug-like compounds from ZINC database...
April 3, 2017: Interdisciplinary Sciences, Computational Life Sciences
https://www.readbyqxmd.com/read/28369888/early-growth-response-1-mediated-downregulation-of-drebrin-correlates-with-loss-of-dendritic-spines
#18
Chulmin Cho, Ryen MacDonald, Jijun Shang, Moon Jeong Cho, Lorraine E Chalifour, Hemant K Paudel
Postsynaptic dendritic spines are structurally composed of actin cytoskeleton, which undergoes dynamic morphological changes to accommodate incoming synaptic activity. Drebrin is an actin binding protein highly expressed in dendritic spines that serves an important role in regulating spine morphology. Functionally, loss of drebrin directly correlates with deficits in learning and memory, as is the case observed in Alzheimer's disease. Despite these findings, the regulatory factor responsible for drebrin loss remains unclear...
March 31, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28369468/patterns-of-stress-response-and-tolerance-based-on-transcriptome-profiling-of-rice-crown-tissue-under-zinc-deficiency
#19
Amrit K Nanda, Vincent Pujol, Matthias Wissuwa
Zinc (Zn) deficiency is the most prevalent micronutrient disorder in rice and leads to delayed development and decreased yield. Several studies have investigated how rice plants respond to Zn deficiency and examined the differences between Zn-efficient (ZE) and Zn-inefficient (ZI) genotypes. ZE genotypes reallocate more Zn to roots and are better at maintaining crown root development than ZI genotypes in response to Zn deficiency. However, little is known about the molecular mechanisms controlling these differences...
March 29, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28363565/zinc-complexed-chitosan-tpp-nanoparticles-a-promising-micronutrient-nanocarrier-suited-for-foliar-application
#20
Paresh Deshpande, Ashwin Dapkekar, Manoj D Oak, Kishore M Paknikar, Jyutika M Rajwade
Cultivation of cereals in zinc deficient soils leads to declined nutritional quality of grain. Zinc deficiency in humans is a consequence of consumption of micronutrient deficient cereals as staple food. To achieve an increase in zinc density in grain, we evaluated zinc complexed chitosan nanoparticles (Zn-CNP) as a potential 'nanocarrier' suited for foliar fertilization. Zn-CNP were synthesized using tri-polyphosphate as a cross-linker. Spherical Zn-CNP (diameter 250-300nm) were positively charged (zeta potential, +42...
June 1, 2017: Carbohydrate Polymers
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