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https://www.readbyqxmd.com/read/28531849/heterotrophy-of-filamentous-oleaginous-microalgae-tribonema-minus-for-potential-production-of-lipid-and-palmitoleic-acid
#1
Wenjun Zhou, Hui Wang, Lin Chen, Wentao Cheng, Tianzhong Liu
Heterotrophic fermentation and high valuable co-product producing are thought to be effective ways to improve the economic viability and feasibility of commercial production of microalgae biofuels. This work reported the heterotrophic cultivation of Tribonema minus for lipid and palmitoleic acid (a novel functional fatty acid) production. Firstly, the heterotrophic ability of T. minus was identified for the first time with significant promotion in biomass and lipid productivity, and glucose and urea were then selected as the optimal carbon and nitrogen sources...
May 10, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28523645/enhancement-of-total-lipid-yield-by-nitrogen-carbon-and-iron-supplementation-in-isolated-microalgae
#2
Ramachandran Sivaramakrishnan, Aran Incharoensakdi
The biochemical contents and biodiesel production ability of three microalgal strains grown under different sodium nitrate, sodium carbonate, and ferric ammonium citrate (iron) levels were investigated. The highest biomass and lipid contents were found in Scenedesmus sp., Chlorella sp., and Chlamydomonas sp. when grown in normal BG-11 containing sodium carbonate concentration at 0.03 g · L(-1) , and in normal BG-11 containing iron concentration at 0.009 or 0.012 g · L(-1) . Increasing the sodium nitrate level increased the biomass content, but decreased the lipid content in all three microalgae...
May 18, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28515173/heme-oxygenase-1-mitigates-ferroptosis-in-renal-proximal-tubule-cells
#3
Oreoluwa Adedoyin, Ravindra Boddu, Amie M Traylor, Jeremie M Lever, Subhashini Bolisetty, James George, Anupam Agarwal
Ferroptosis is an iron-dependent form of regulated, non-apoptotic cell death, which contributes to damage in models of acute kidney injury (AKI). Heme oxygenase-1 (HO-1) is a cytoprotective enzyme induced in response to cellular stress, and is protective against AKI due to its anti-apoptotic and anti-inflammatory properties. However, the role of HO-1 in regulating ferroptosis is unclear. The purpose of this study was to elucidate the role of HO-1 in regulating ferroptotic cell death in renal proximal tubule cells (PTCs)...
May 17, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28500782/melatonin-protects-bone-marrow-mesenchymal-stem-cells-against-iron-overload-induced-osteogenic-differentiation-dysfunction-and-senescence
#4
Fan Yang, Lei Yang, Yuan Li, Gege Yan, Chao Feng, Tianyi Liu, Rui Gong, Ye Yuan, Ning Wang, Elina Idiiatullina, Timur Bikkuzin, Valentin Pavlov, Yang Li, Chaorun Dong, Dawei Wang, Yang Cao, Zhenbo Han, Lai Zhang, Qi Huang, Fengzhi Ding, Zhengang Bi, Benzhi Cai
Bone marrow mesenchymal stem cells (BMSCs) are an expandable population of stem cells which can differentiate into osteoblasts, chondrocytes and adipocytes. Dysfunction of BMSCs in response to pathological stimuli contributes to bone diseases. Melatonin, a hormone secreted from pineal gland, has been proved to be an important mediator in bone formation and mineralization. The aim of this study was to investigate whether melatonin protected against iron overload-induced dysfunction of BMSCs and its underlying mechanisms...
May 13, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28494293/fate-of-arsenic-before-and-after-chemical-enhanced-washing-of-an-arsenic-containing-soil-in-hong-kong
#5
Jingzi Beiyuan, Jiang-Shan Li, Daniel C W Tsang, Lei Wang, Chi Sun Poon, Xiang-Dong Li, Scott Fendorf
This study evaluated the feasibility of 2-h chemical-enhanced washing of As-containing soil resulting from geogenic sources in Hong Kong and the fate of As before and after remediation. The soil morphology and As speciation in soil was elucidated by scanning electron microscopy with energy dispersive X-ray spectroscopy, X-ray diffractometer, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy. Integrated analysis of the results suggests that the As (>90%) resides predominantly as arsenate bound to ferric iron oxides, with a minor contribution (<10%) from an As(III)-sulphide phase...
May 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28465262/non-thermal-plasma-induces-a-stress-response-in-mesothelioma-cells-resulting-in-increased-endocytosis-lysosome-biogenesis-and-autophagy
#6
Lei Shi, Fumiya Ito, Yue Wang, Yasumasa Okazaki, Hiromasa Tanaka, Masaaki Mizuno, Masaru Hori, Tasuku Hirayama, Hideko Nagasawa, Des R Richardson, Shinya Toyokuni
Non-thermal plasma (NTP) is a potential new therapeutic modality for cancer. However, its mechanism of action remains unclear. Herein, we studied the effect of NTP on mesothelioma cells and fibroblasts to understand its anti-proliferative efficacy. Interestingly, NTP demonstrated greater selective anti-proliferative activity against mesothelioma cells relative to fibroblasts than cisplatin, which is used for mesothelioma treatment. The anti-proliferative effect of NTP was enhanced by pre-incubation with the cellular iron donor, ferric ammonium citrate (FAC), and inhibited by iron chelation using desferrioxamine (DFO)...
May 2, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28465088/nrf2-are-signaling-provides-neuroprotection-in-traumatic-brain-injury-via-modulation-of-the-ubiquitin-proteasome-system
#7
Hui Ding, Xiaoliang Wang, Handong Wang, Lin Zhu, Qiang Wang, Yue Jia, Wuting Wei, Chenhui Zhou, Heming Wu, Ke Ding
The nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway exhibits protective effects in a variety of neurological diseases. However, the role of this pathway in traumatic brain injury (TBI) is not fully understood. This study investigates whether the Nrf2-ARE pathway provides neuroprotection following TBI via regulation of the ubiquitin proteasome system (UPS), and examines the involvement of this pathway in redox homeostasis. We found that activation the Nrf2-ARE pathway can mitigate secondary brain injury induced by TBI...
April 29, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28415572/inhibition-of-iron-overload-induced-apoptosis-and-necrosis-of-bone-marrow-mesenchymal-stem-cells-by-melatonin
#8
Fan Yang, Yuan Li, Gege Yan, Tianyi Liu, Chao Feng, Rui Gong, Ye Yuan, Fengzhi Ding, Lai Zhang, Elina Idiiatullina, Valentin Pavlov, Zhenbo Han, Wenya Ma, Qi Huang, Ying Yu, Zhengyi Bao, Xiuxiu Wang, Bingjie Hua, Zhimin Du, Benzhi Cai, Lei Yang
Iron overload induces severe damage to several vital organs such as the liver, heart and bone, and thus contributes to the dysfunction of these organs. The aim of this study is to investigate whether iron overload causes the apoptosis and necrosis of bone marrow mesenchymal stem cells (BMSCs) and melatonin may prevent its toxicity. Perls' Prussion blue staining showed that exposure to increased concentrations of ferric ammonium citrate (FAC) induced a gradual increase of intracellular iron level in BMSCs. Trypan blue staining demonstrated that FAC decreased the viability of BMSCs in a concentration-dependent manner...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28392783/agro-industrial-wastes-for-production-of-biosurfactant-by-bacillus-subtilis-anr-88-and-its-application-in-synthesis-of-silver-and-gold-nanoparticles
#9
Ashwini N Rane, Vishakha V Baikar, D V Ravi Kumar, Rajendra L Deopurkar
Biosurfactants, surface-active amphiphilic compounds, despite having a wide range of applications, have a high cost of production, which severely restricts their use. For cheaper production of biosurfactant, we investigated the potential of the indigenously isolated biosurfactant producing organism, Bacillus subtilis ANR 88, to grow on different cheap carbon sources (molasses, whey, and extracts of potato peels, orange peels, banana peels, and bagasse). We found that, B. subtilis ANR 88 used significant amounts of total sugar to produce cell biomass and biosurfactant...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28373869/the-role-of-enriched-microbial-consortium-on-iron-reducing-bioaugmentation-in-sediments
#10
Yuanyuan Pan, Xunan Yang, Meiying Xu, Guoping Sun
Microbial iron reduction is an important biogeochemical process and involved in various engineered processes, including the traditional clay dyeing processes. Bioaugmentation with iron reducing bacteria (IRB) is generally considered as an effective method to enhance the activity of iron reduction. However, limited information is available about the role of IRB on bioaugmentation. To reveal the roles of introduced IRB on bioaugmentation, an IRB consortium enriched with ferric citrate was inoculated into three Fe(II)-poor sediments which served as the pigments for Gambiered Guangdong silk dyeing...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28371161/ferric-pyrophosphate-citrate-as-an-iron-replacement-agent-for-patients-receiving-hemodialysis
#11
REVIEW
Steven Fishbane, Hitesh H Shah
Treatment of anemia remains an integral component in the care of patients with end stage kidney disease receiving dialysis. Currently, both erythropoiesis stimulating agents and iron replacement agents remain important anemia management strategies for patients undergoing hemodialysis (HD). Ferric pyrophosphate citrate (FPC) was approved by the U.S. Food and Drug Administration in January 2015 as an iron replacement product in adult patients receiving long-term maintenance HD. FPC is administered to patients on HD through the dialysate...
June 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28367088/regulation-of-dmt1-on-autophagy-and-apoptosis-in-osteoblast
#12
Fei Liu, Wei-Lin Zhang, Hong-Zheng Meng, Zheng-Yu Cai, Mao-Wei Yang
Iron overload has recently been associated with the changes in the bone microstructure that occur in osteoporosis. However, the effect of iron overload on osteoblasts is unclear. The purpose of this study was to explore the function of divalent metal transporter 1 (DMT1) in the pathological processes of osteoporosis. Osteoblast hFOB1.19 cells were cultured in medium supplemented with different concentrations (0, 50, 100, 200, 300, 400, 500 μmol/L) of ferric ammonium citrate (FAC) as a donor of ferric ions...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28248961/effects-of-different-phosphate-lowering-strategies-in-patients-with-ckd-on-laboratory-outcomes-a-systematic-review-and-nma
#13
Nigar Sekercioglu, Argie Angeliki Veroniki, Lehana Thabane, Jason W Busse, Noori Akhtar-Danesh, Alfonso Iorio, Luciane Cruz Lopes, Gordon H Guyatt
BACKGROUND: Chronic kidney disease-mineral and bone disorder (CKD-MBD), a complication of chronic kidney disease, has been linked to reduced quality and length of life. High serum phosphate levels that result from CKD-MBD require phosphate-lowering agents, also known as phosphate binders. The objective of this systematic review is to compare the effects of available phosphate binders on laboratory outcomes in patients with CKD-MBD. METHODS: Data sources included MEDLINE and EMBASE from January 1996 to April 2016, and the Cochrane Register of Controlled Trials up to April 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28248443/iron-overload-induces-apoptosis-of-murine-preosteoblast-cells-via-ros-and-inhibition-of-akt-pathway
#14
J-Y Ke, W-J Cen, X-Z Zhou, Y-R Li, W-D Kong, J-W Jiang
OBJECTIVE: This study investigates the inhibitory effect of iron overload on MC3T3-E1 cells and its molecular mechanism. METHODS: MC3T3-E1 cells were grown under different concentrations of FAC (ferric ammonium citrate), and the WST-8 assay was used to investigate the proliferation of cells following FAC with or without deferasirox. DCFH-DA fluorescence probe was applied to detect the cellular reactive oxygen species (ROS) level. The apoptotic cells were analyzed with Annexin V-FITC/PI and the Hoechst 33258 nuclear staining assay...
March 1, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28243203/nifedipine-increases-iron-content-in-wkpt-0293-cl-2-cells-via-up-regulating-iron-influx-proteins
#15
Shuang-Shuang Yu, Li-Rong Jiang, Yan Ling, Zhong-Ming Qian, Yu-Fu Zhou, Juan Li, Ya Ke
Nifedipine was reported to enhance urinary iron excretion in iron overloaded mice. However, it remains unknown how nifedipine stimulates urinary iron excretion in the kidney. We speculated that nifedipine might inhibit the TfR1/ DMT1 (transferrin receptor 1/divalent metal transporter1)-mediated iron uptake by proximal tubule cells in addition to blocking L-type Ca2+ channels, leading to an increase in iron in lumen-fluid and then urinary iron excretion. To test this hypothesis, we investigated the effects of nifedipine on iron content and expression of TfR1, DMT1 and ferroportin1 (Fpn1) in WKPT-0293 Cl...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28243065/curcumin-induces-apoptosis-and-protective-autophagy-in-castration-resistant-prostate-cancer-cells-through-iron-chelation
#16
Chunguang Yang, Xueyou Ma, Zhihua Wang, Xing Zeng, Zhiquan Hu, Zhangqun Ye, Guanxin Shen
BACKGROUND: Curcumin induces apoptosis and autophagy in different cancer cells. Moreover, chemical and biological experiments have evidenced that curcumin is a biologically active iron chelator and induces cytotoxicity through iron chelation. We thus hypothesized that curcumin may induce apoptosis and autophagy in castration-resistant prostate cancer (CRPC) cells through its iron-chelating properties. MATERIALS AND METHODS: CRPC cells were loaded with curcumin alone or in combination with ferric ammonium citrate (FAC)...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28195347/characterization-of-ferroptosis-in-murine-models-of-hemochromatosis
#17
Hao Wang, Peng An, Enjun Xie, Qian Wu, Xuexian Fang, Hong Gao, Zhuzhen Zhang, Yuzhu Li, Xudong Wang, Jiaying Zhang, Guoli Li, Lei Yang, Wei Liu, Junxia Min, Fudi Wang
Ferroptosis is a recently identified iron-dependent form of non-apoptotic cell death implicated in brain, kidney, and heart pathology. However, the biological roles of iron and iron metabolism in ferroptosis remain poorly understood. Here, we studied the functional role of iron and iron metabolism in the pathogenesis of ferroptosis. We found that ferric citrate potently induces ferroptosis in murine primary hepatocytes and bone marrow-derived macrophages (BMDMs). Next, we screened for ferroptosis in mice fed a high-iron diet and in mouse models of hereditary hemochromatosis with iron overload...
February 13, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28195138/bioproduction-characterization-anticancer-and-antioxidant-activities-of-extracellular-melanin-pigment-produced-by-newly-isolated-microbial-cell-factories-streptomyces-glaucescens-neae-h
#18
Noura El-Ahmady El-Naggar, Sara M El-Ewasy
In this present study, a newly isolated strain, Streptomyces sp. NEAE-H, capable of producing high amount of black extracellular melanin pigment on peptone-yeast extract iron agar and identified as Streptomyces glaucescens NEAE-H. Plackett-Burman statistical design was conducted for initial screening of 17 independent (assigned) variables for their significances on melanin pigment production by Streptomyces glaucescens NEAE-H. The most significant factors affecting melanin production are incubation period, protease-peptone and ferric ammonium citrate...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28129008/curcumin-and-turmeric-modulate-the-tumor-promoting-effects-of-iron-in-vitro
#19
Donald J Messner, Todd Robinson, Kris V Kowdley
Free or loosely chelated iron has tumor-promoting properties in vitro. Curcumin, a polyphenol derived from the food spice turmeric (Curcuma longa), is a potent antioxidant that binds iron. The primary aim of this study was to investigate whether curcuminoids prevent tumor-promoting effects of iron in T51B cells, a non-neoplastic rat liver epithelial cell line. Purified curcuminoids (curcumin) or a standardized turmeric extract similarly reduced oxidative stress and cytotoxicity associated with iron overload (IC50 values near 10 μM, P < 0...
April 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28128726/the-safety-of-achieved-iron-stores-and-their-effect-on-iv-iron-and-esa-use-post-hoc-results-from-a-randomized-trial-of-ferric-citrate-as-a-phosphate-binder-in-dialysis%C3%A2
#20
RANDOMIZED CONTROLLED TRIAL
Kausik Umanath, Barbara Greco, Diana I Jalal, Molly McFadden, Mohammed Sika, Mark J Koury, Robert Niecestro, Lawrence G Hunsicker, Tom Greene, Julia B Lewis, Jamie P Dwyer
Iron stores assuring optimal efficacy/safety for erythropoiesis are unknown in the dialysis population. Using multicenter trial data, we related safety profiles, erythropoiesis-stimulating agent (ESA), and intravenous iron dosing to achieved iron stores in 441 subjects randomized 2 : 1 to ferric citrate or active control as their phosphate binder over 52 weeks. Intravenous iron was given at each site's discretion if ferritin ≤ 1,000 ng/mL and transferrin saturation ≤ 30%. Multivariable time-dependent Cox regression jointly related the primary safety outcome (composite of cardiac, infection, gastrointestinal, and hepatobiliary serious adverse events) to moving averages of ferritin and transferrin saturation over the preceding 90 days with covariate adjustment...
March 2017: Clinical Nephrology
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