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Antioxidant nutrients

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https://www.readbyqxmd.com/read/28231558/alleviating-effects-of-calcium-on-cobalt-toxicity-in-two-barley-genotypes-differing-in-cobalt-tolerance
#1
Jonas Lwalaba Wa Lwalaba, Gerald Zvobgo, Liangbo Fu, Xuelei Zhang, Theodore Mulembo Mwamba, Noor Muhammad, Robert Prince Mukobo Mundende, Guoping Zhang
Cobalt (Co) contamination in soils is becoming a severe issue in environment safety and crop production. Calcium (Ca)(,) as a macro-nutrient element, shows the antagonism with many divalent heavy metals and the capacity of alleviating oxidative stress in plants. In this study, the protective role of Ca in alleviating Co stress was hydroponically investigated using two barley genotypes differing in Co toxicity tolerance. Barley seedlings exposed to 100µM Co showed the significant reduction in growth and photosynthetic rate, and the dramatic increase in the contents of reactive oxygen species (ROS), malondialdehyde (MDA), reduced glutathione (GSH) and oxidized glutathione (GSSG), and the activities of anti-oxidative enzymes, with Ea52 (Co-sensitive) being much more affected than Yan66 (Co-tolerant)...
February 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28231393/effects-of-tissue-culture-and-mycorrhiza-applications-in-organic-farming-on-concentrations-of-phytochemicals-and-antioxidant-capacities-in-ginger-zingiber-officinale-roscoe-rhizomes-and-leaves
#2
Byungrok R Min, Lurline E Marsh, Keegan Brathwaite, Adebola O Daramola
Tissue culture and mycorrhiza applications can provide disease-free seedlings and enhanced nutrient absorption, respectively, for organic farming. Ginger (Zingiber officinale Roscoe) is rich in phytochemicals and has various health-protective potentials. This study was aimed at determining effects of tissue culture and mycorrhiza applications alone or in combinations in organic farming on phytochemical contents (total phenolics and flavonoids [TP and TF, respectively], gingerol and shogaol homologues, phenolic acids, and carotenoids) and antioxidant capacities (DPPH [2,2-diphenyl-1-picrylhydrazyl] radical scavenging, oxygen radical absorbance (ORAC), and iron-chelating capacities [ICC]) in solvent-extractable (Free) and cell-wall-matrix-bound (Bound) fractions of ginger rhizome and Free fraction of the leaves in comparison with non-organics...
February 23, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28231159/comparison-of-the-proximate-composition-total-carotenoids-and-total-polyphenol-content-of-nine-orange-fleshed-sweet-potato-varieties-grown-in-bangladesh
#3
Mohammad Khairul Alam, Ziaul Hasan Rana, Sheikh Nazrul Islam
In an attempt to develop the food composition table for Bangladesh, the nutritional composition of nine varieties of orange-fleshed sweet potato was analyzed together with total carotenoids (TCC) and total polyphenol content (TPC). Each variety showed significant variation in different nutrient contents. The quantification of the TCC and TPC was done by spectrophotometric measurement, and the proximate composition was done by the AOAC method. The obtained results showed that total polyphenol content varied from 94...
September 14, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28230214/antioxidant-response-is-a-protective-mechanism-against-nutrient-deprivation-in-c-elegans
#4
Jun Tao, Qin-Yi Wu, Yi-Cheng Ma, Yuan-Li Chen, Cheng-Gang Zou
Animals often experience periods of nutrient deprivation; however, the molecular mechanisms by which animals survive starvation remain largely unknown. In the nematode Caenorhabditis elegans, the nuclear receptor DAF-12 acts as a dietary and environmental sensor to orchestrate diverse aspects of development, metabolism, and reproduction. Recently, we have reported that DAF-12 together with co-repressor DIN-1S is required for starvation tolerance by promoting fat mobilization. In this report, we found that genetic inactivation of the DAF-12 signaling promoted the production of reactive oxygen species (ROS) during starvation...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223995/synergistic-action-of-a-microbial-based-biostimulant-and-a-plant-derived-protein-hydrolysate-enhances-lettuce-tolerance-to-alkalinity-and-salinity
#5
Youssef Rouphael, Mariateresa Cardarelli, Paolo Bonini, Giuseppe Colla
In the coming years, farmers will have to deal with growing crops under suboptimal conditions dictated by global climate changes. The application of plant biostimulants such as beneficial microorganisms and plant-derived protein hydrolysates (PHs) may represent an interesting approach for increasing crop tolerance to alkalinity and salinity. The current research aimed at elucidating the agronomical, physiological, and biochemical effects as well as the changes in mineral composition of greenhouse lettuce (Lactuca sativa L...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28216891/effects-of-potassium-sulfate-k2so4-on-the-element-contents-polyphenol-content-antioxidant-and-antimicrobial-activities-of-milk-thistle-silybum-marianum
#6
Gulsum Yaldiz
BACKGROUND: Silybum marianum L. (Milk thistle) is native to the Mediterranean basin and is now widespread throughout the world. It's sprout is used as a herbal medicine for the treatment of liver disease for centuries. The seeds of milk thistle contain silymarin, an isomeric mixture of flavonolignans [silybin, silychristin, and silydianin]. Silymarin acts as a strong anti-hepatotoxic. OBJECTIVES: The objective of this study was to evaluate the influences of potassium sulfate [K2SO4] fertilizer doses on polyphenol content, some nutrient elements, antioxidant and antimicrobial activities of milk thistle at experimental fields of Ordu University in Turkey...
January 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28211759/gamma-tocopherol-supplementation-ameliorated-hyper-inflammatory-response-during-the-early-cutaneous-wound-healing-in-alloxan-induced-diabetic-mice
#7
Jihyun Shin, Soo Jin Yang, Yunsook Lim
Delayed wound healing is one of the major diabetic complications. During wound healing process, the early inflammatory stage is important for better prognosis. One of antioxidant nutrient, gamma-tocopherol (GT) is considered to regulate inflammatory conditions. This study investigated the effect of GT supplementation on mechanism associated with inflammation, oxidative stress, and apoptosis during early cutaneous wound healing in diabetic mice. Diabetes was induced by alloxan injection in ICR mice. All mice were divided into three groups: non-diabetic control mice (CON), diabetic control mice (DMC), and diabetic mice supplemented with GT (GT)...
March 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28202095/the-effects-of-vitamin-and-mineral-supplementation-on-symptoms-of-schizophrenia-a-systematic-review-and-meta-analysis
#8
J Firth, B Stubbs, J Sarris, S Rosenbaum, S Teasdale, M Berk, A R Yung
BACKGROUND: When used as an adjunctive with antipsychotics, certain vitamins and minerals may be effective for improving symptomatic outcomes of schizophrenia, by restoring nutritional deficits, reducing oxidative stress, or modulating neurological pathways. METHOD: We conducted a systematic review of all randomized controlled trials (RCTs) reporting effects of vitamin and/or mineral supplements on psychiatric symptoms in people with schizophrenia. Random-effects meta-analyses were used to calculate the standardized mean difference between nutrient and placebo treatments...
February 16, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28198577/serum-carotenoid-and-tocopherol-concentrations-and-risk-of-asthma-in-childhood-a-nested-case-control-study
#9
Niina Hӓmӓlӓinen, Bright I Nwaru, Iris Erlund, Hanna-Mari Takkinen, Suvi Ahonen, Jorma Toppari, Jorma Ilonen, Riitta Veijola, Mikael Knip, Minna Kaila, Suvi M Virtanen
BACKGROUND: The antioxidant hypothesis regarding the risk of asthma in childhood has resulted in inconsistent findings. Some data indicate that the role of antioxidants in childhood asthma risk may have a critical time window of effect, but only a well-designed longitudinal cohort study can clarify this hypothesis. OBJECTIVE: To study the longitudinal associations between serum carotenoid and tocopherol concentrations during the first 4 years of life and asthma risk by the age of 5 years...
February 15, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28194672/assessment-of-the-effects-of-orally-administered-ferrous-sulfate-on-oncopeltus-fasciatus-heteroptera-lygaeidae
#10
Amparo Ferrero, Amparo Torreblanca, María Dolores Garcerá
Iron is an essential nutrient needed for multiple biological processes, but it is also an effective pro-oxidant in its reduced form. Environmental sources of iron toxic species include reduced soils from rice plantations, polluted natural areas from metal industry waste, or iron oxides used in soil bioremediation. Few studies have been conducted to assess the toxicity of iron species in insects. The present work aims to assess the oxidative stress effects of ferrous sulfate administered in drinking water after acute exposure (96 h) to adults of the insect model Oncopeltus fasciatus (Dallas)...
February 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28189030/does-green-tea-consumption-improve-the-salivary-antioxidant-status-of-smokers
#11
Somayyeh Azimi, Zahra Mansouri, Sedigheh Bakhtiari, Marc Tennant, Estie Kruger, Masoumeh Rajabibazl, Azam Daraei
OBJECTIVE: 
Considering the higher rate of oral cancer, and reduction in salivary antioxidants in smokers as indicated in previous studies, antioxidant- containing nutrients such as green tea, seem to be beneficial in counteracting against oxidative stress in this group. This study assessed the salivary total antioxidant alteration in smokers compared to nonsmokers, after short-tem (7days) and long-term (3 weeks), green tea drinking. DESIGN: In this experimental study, 20 volunteer moderate-to-heavy male smokers, and 20 matched healthy non-smokers were selected to participate, according to the inclusion criteria...
February 3, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28181242/sensory-profile-and-consumer-acceptability-of-prebiotic-white-chocolate-with-sucrose-substitutes-and-the-addition-of-goji-berry-lycium-barbarum
#12
Janaína Madruga Morais Ferreira, Bruna Marcacini Azevedo, Valdecir Luccas, Helena Maria André Bolini
Functional food is a product containing nutrients that provide health benefits beyond basic nutrition. The objective of the present study was to evaluate the descriptive sensory profile and consumers' acceptance of functional (prebiotic) white chocolates with and without the addition of an antioxidant source (goji berry [GB]) and sucrose replacement. The descriptive sensory profile was determined by quantitative descriptive analysis (QDA) with trained assessors (n = 12), and the acceptance test was performed with 120 consumers...
February 9, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28178612/dietary-soy-protein-improves-adipose-tissue-dysfunction-by-modulating-parameters-related-with-oxidative-stress-in-dyslipidemic-insulin-resistant-rats
#13
Paola G Illesca, Silvina M Álvarez, Dante A Selenscig, María Del R Ferreira, María S Giménez, Yolanda B Lombardo, María E D'Alessandro
The present study investigates the benefits of the dietary intake of soy protein on adipose tissue dysfunction in a rat model that mimics several aspects of the human metabolic syndrome. Wistar rats were fed a sucrose-rich diet (SRD) for 4 months. After that, half of the animals continued with SRD until month 8 while in the other half, casein protein was replaced by isolated soy protein for 4 months (SRD-S). A reference group consumed a control diet all the time. In adipose tissue we determined: i) the activities of antioxidant enzymes, gene expression of Mn-superoxide dismutase (SOD) and glutathione peroxidase (GPx), and glutathione redox state ii) the activity of xanthine oxidase (XO), ROS levels and the gene expression of NAD(P)H oxidase iii) the expression of the nuclear factor erythroid-2 related factor-2 (Nrf2)...
February 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28177373/a-strategy-to-improve-nitrogen-utilization-reduce-environmental-impact-and-increase-performance-and-antioxidant-capacity-of-fattening-lambs-using-pomegranate-peel-extract
#14
M Rajabi, Y Rouzbehan, J Rezaei
Dietary natural plant secondary metabolites (PSM) extracted from a pomegranate peel (PP) byproduct have the potential to improve milk yield and the milk fatty acid profile of dairy cows. This experiment was performed to assess the influence of different dietary levels of PP extract (PPE) on feedlot performance, ruminal status, nutrient utilization, and antioxidant status in fattening Moghani lambs. Thirty-two lambs (initial BW of 22 ± 1.2 kg) were used in a completely randomized design with a 72-d period and 4 treatments: PPE0 (no extract), PPE15 (15 mL PPE/kg of diet DM), PPE30 (30 mL PPE/kg of diet DM), and PPE45 (45 mL PPE/kg of diet DM)...
January 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28175999/dietary-proteins-and-amino-acids-in-the-control-of-the-muscle-mass-during-immobilization-and-aging-role-of-the-mps-response
#15
REVIEW
Jason M Cholewa, Dominique Dardevet, Fernanda Lima-Soares, Kassiana de Araújo Pessôa, Paulo Henrique Oliveira, João Ricardo Dos Santos Pinho, Humberto Nicastro, Zhi Xia, Christian Emmanuel Torres Cabido, Nelo Eidy Zanchi
Dietary proteins/essential amino acids (EAAs) are nutrients with anabolic properties that may increase muscle mass or attenuate muscle loss during immobilization and aging via the stimulation of muscle protein synthesis (MPS). An EAA's anabolic threshold, capable to maximize the stimulation of MPS has been hypothesized, but during certain conditions associated with muscle loss, this anabolic threshold seems to increase which reduces the efficacy of dietary EAAs to stimulate MPS. Preliminary studies have demonstrated that acute ingestion of dietary proteins/EAA (with a sufficient amount of leucine) was capable to restore the postprandial MPS during bed rest, immobilization or aging; however, whether these improvements translate into chronic increases (or attenuates loss) of muscle mass is equivocal...
February 7, 2017: Amino Acids
https://www.readbyqxmd.com/read/28159291/corrigendum-to-nutrient-compositions-and-antioxidant-capacity-of-kiwifruit-actinidia-and-their-relationship-with-flesh-color-and-commercial-value-food-chem-218-2017-294-304
#16
Tingting Ma, Xiangyu Sun, Jinmei Zhao, Yilin You, Yushan Lei, Guitian Gao, Jicheng Zhan
No abstract text is available yet for this article.
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28158900/biochemical-proximates-of-pumpkin-cucurbitaeae-spp-and-their-beneficial-effects-on-the-general-well-being-of-poultry-species
#17
REVIEW
M C Achilonu, I C Nwafor, D O Umesiobi, M M Sedibe
There is a growing need to increase productivity in poultry. Growth hormones and antibiotics have the ability to improve health, weight gain and feed efficiency in meat-producing animals. The growth-promoting antibiotics are administered to poultry to improve the general performance of the chicken. However, the use of the xenobiotic drugs in food-producing animals has been a concern and a sensitive issue of debate for several decades in the EU and many other regional blocks of the world. Consequently, the use of hormones in animal production has been banned in Italy, Denmark and Germany for over 4-5 decades, while Belgium and Greece had never permitted its use for livestock fattening purposes...
February 3, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28150587/salicylic-acid-and-ascorbic-acid-retrieve-activity-of-antioxidative-enzymes-and-structure-of-caralluma-tuberculata-calli-on-peg-stress
#18
Riaz U Rehman, Muhammad Zia, Muhammad F Chaudhary
Biochemical adaptations and morphological changes are cellular aptitude originated on biotic and abiotic stresses. Polyethylene glycol (PEG) induces drought stress in the nutrient solution. In the present investigation, Caralluma tuberculata calli is exposed to PEG and antioxidative molecules. By increasing the level of antioxidative enzymes (SOD, POD, CAT, APX, and GR), the PEG-stressed calli falls off upon exposure to non-enzymatic antioxidants (ascorbic acid and salicylic acid). Under PEG-stress, several cellular and sub-cellular changes such as alteration in plasma membrane thickness, change in nucleus shape, increase in nucleoli, deformation of thylakoid membranes, and increase in plastoglobuli are observed through electron microscopic images...
February 2, 2017: General Physiology and Biophysics
https://www.readbyqxmd.com/read/28149884/p53-mutations-and-cancer-a-tight-linkage
#19
COMMENT
Francesco Perri, Salvatore Pisconti, Giuseppina Della Vittoria Scarpati
P53 is often mutated in solid tumors, in fact, somatic changes involving the gene encoding for p53 (TP53) have been discovered in more than 50% of human malignancies and several data confirmed that p53 mutations represent an early event in cancerogenesis. Main p53 functions consist in cell cycle arrest, DNA repair, senescence and apoptosis induction in response to mutagenic stimuli, and, to exert those functions, p53 acts as transcriptional factor. Recent data have highlighted another very important role of p53, consisting in regulate cell metabolism and cell response to oxidative stress...
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28143406/vitamin-c-for-preventing-atrial-fibrillation-in-high-risk-patients-a-systematic-review-and-meta-analysis
#20
Harri Hemilä, Timo Suonsyrjä
BACKGROUND: Atrial fibrillation (AF), a common arrhythmia contributing substantially to cardiac morbidity, is associated with oxidative stress and, being an antioxidant, vitamin C might influence it. METHODS: We searched the Cochrane CENTRAL Register, MEDLINE, and Scopus databases for randomised trials on vitamin C that measured AF as an outcome in high risk patients. The two authors independently assessed the trials for inclusion, assessed the risk of bias, and extracted data...
February 1, 2017: BMC Cardiovascular Disorders
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