Transfer-dehydrogenation of secondary alcohols catalyzed by manganese NNN-pincer complexes.
Abstract Novel catalytic systems based on pentacarbonylmanganese bromide and stable NNN-pincer ligands are presented for the transfer-dehydrogenation of secondary alcohols to give the corresponding ketones in good to excellent isolated yields. Best results are obtained using di-picolylamine derivatives as ligands and acetone as an inexpensive hydrogen acceptor. Besides high activity for benzylic substrates, aliphatic alcohols, as well as steroid derivatives, are readily oxidized in the presence of the optimal phosphorus-free catalyst. PMID: 31697284 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - November 7, 2019 Category: Chemistry Authors: Budweg S, Junge K, Beller M Tags: Chem Commun (Camb) Source Type: research

Dietary Intake and Urinary Excretion of Manganese in Korean Healthy Adults.
In this study, we aimed to analyze the relationship between Mn intake and urinary excretion in Korean adults. A twice dietary intake survey using a 24-h recall method was conducted on 640 adults (320 men and 320 women), aged 20 to 69 years. Eighty 24-h urine samples were also twice collected and urinary Mn excretions were analyzed. Results indicated that total Mn intake per day was 4.1 mg for men and 3.9 mg for women (p
Source: Biological Trace Element Research - November 7, 2019 Category: Biology Authors: Choi MK, Bae YJ Tags: Biol Trace Elem Res Source Type: research

The impact of agricultural and green waste treatments on compost quality of dewatered sludge.
This study aimed to investigate the effect of two agricultural waste wheat straw (WS) and green waste eucalyptus tree leaves (ETL) treatments on the quality of the compost produced from dewatered sewage sludge. So that, the variation trend of heavy metals, temperature, moisture, PH, and C/N ratio was considered during the composting process. The results showed that the variation of some parameters in WS and ETL such as temperature (24.68 ± 0.26 and 23.41 ± 1.35), moisture (4.5 ± 2.64 and 7.66 ± 2.51), pH (5.66 ± 0.35 and 5.97 ± 0.41), and C/N ratio (250 ± 4.08 and 60 ±...
Source: Environmental Science and Pollution Research International - November 7, 2019 Category: Environmental Health Authors: Abbasi F, Mokhtari M, Jalili M Tags: Environ Sci Pollut Res Int Source Type: research

Precise analysis of the concentrations and isotopic compositions of molybdenum and tungsten in geochemical reference materials.
We present a new method for the precise and accurate analysis of Mo and W concentrations and isotope compositions from one single sample aliquot, thus saving mass of a sample and making the results directly comparable without concerns related to analytical or natural sample heterogeneity. After acid digestion, Mo and W are separated from the sample matrix using chelating resin NOBIAS Chelate-PA1 and anion exchange resin AG1 X8. Matrix removal is highly efficient: the remaining percentage is 10-2 to 10-5% with respect to the initial weight. Subsequently, samples are measured for Mo and W concentrations and isotope compositi...
Source: Analytica Chimica Acta - November 6, 2019 Category: Chemistry Authors: Tsujisaka M, Takano S, Murayama M, Sohrin Y Tags: Anal Chim Acta Source Type: research

The concentration of selected elements in the placenta according to selected sociodemographic factors and their effect on birth mass and birth length of newborns
ConclusionsSmoking during pregnancy and environment pollution are the factors that affects the concentration of elements in the placenta and contributes to their high accumulation in the placenta. Smoking during pregnancy causes an increased concentration of cadmium in the placenta which has negative health effects for the newborn. Women living in a big city or village had a higher concentration of cadmium in their placentas compared to women living in smaller cities. The significant influence of some elements (K, Fe, Zn, Cu and Cd) on the newborn’s birth parameters was also demonstrated. The results of our research ...
Source: Journal of Trace Elements in Medicine and Biology - November 6, 2019 Category: Biochemistry Source Type: research

Controlled Preparation of GO@NiMn-LDO@MnO2 Nanocomposites and Their Electrochemical Performance Study
Publication date: Available online 4 November 2019Source: Materials LettersAuthor(s): Yi Wang, Chuan Jing, Xiaoya Yuan, Jingcheng Liu, Yuxiang Chen, Yuxin ZhangAbstractTowards the introduction of fast faradaic pseudocapacitive behavior and the increase of the specific capacitance of carbon-based electrodes. Herein, ternary composites GO@NiMn-LDO@MnO2 are fabricated via two-step hydrothermal method. In addition, the hydrothermal reaction time is also investigated during the process of loading the MnO2. Finally, a series of electrochemical tests show that the electrochemical performance has been improved after the introducti...
Source: Materials Letters - November 5, 2019 Category: Materials Science Source Type: research

In vitro bioaccessibility of the Cu, Fe, Mn and Zn in the baru almond and bocaiúva pulp and, macronutrients characterization
This study aimed to evaluate the in vitro bioaccessibility of copper, iron, manganese and zinc in the baru (Dipteryx alata Vog.) almond and the bocaiúva (Acrocomia aculeata (Jacq.) Lodd) pulp and, macronutrients characterization. Centesimal composition, Aw, phytic acid, color, ascorbic acid, carotenoids and pH were determined. The total mineral concentration and in vitro bioaccessibility was quantified by flame atomic absorption spectrometry. The samples showed a composition with high nutritional value, where the baru almond was distinguished by the proteins, lipids and total dietary fibers; the bocaiúva pulp...
Source: Journal of Food Composition and Analysis - November 5, 2019 Category: Food Science Source Type: research

Manganese transporter Slc30a10 controls physiological manganese excretion and toxicity
Manganese (Mn), an essential metal and nutrient, is toxic in excess. Toxicity classically results from inhalational exposures in individuals who work in industrial settings. The first known disease of inherited Mn excess, identified in 2012, is caused by mutations in the metal exporter SLC30A10 and is characterized by Mn excess, dystonia, cirrhosis, and polycythemia. To investigate the role of SLC30A10 in Mn homeostasis, we first generated whole-body Slc30a10–deficient mice, which developed severe Mn excess and impaired systemic and biliary Mn excretion. Slc30a10 localized to canalicular membranes of hepatocytes, but...
Source: Journal of Clinical Investigation - November 5, 2019 Category: Biomedical Science Authors: Courtney J. Mercadante, Milankumar Prajapati, Heather L. Conboy, Miriam E. Dash, Carolina Herrera, Michael A. Pettiglio, Layra Cintron-Rivera, Madeleine A. Salesky, Deepa B. Rao, Thomas B. Bartnikas Source Type: research

Manganese homeostasis: from rare single-gene disorders to complex phenotypes and diseases
Manganese (Mn) participates in a variety of distinct physiological processes, including acting as a cofactor for several enzymes and metalloenzymes, in addition to playing a role in immune function, endocrine function, hematopoiesis, and oxidative stress regulation. Mn homeostasis is tightly regulated via intestinal absorption and hepatobiliary and intestinal excretion. In this issue of the JCI, Mercadante and colleagues explored the role of the metal transporter Slc30a10 in vivo using a mouse model system. The authors used whole-body and tissue-specific gene knockouts to show that Slc30a10 is paramount for Mn excretion in...
Source: Journal of Clinical Investigation - November 5, 2019 Category: Biomedical Science Authors: Nathan Katz, Daniel J. Rader Source Type: research

[ASAP] Manganese-Catalyzed Stereospecific Hydroxymethylation of Alkyl Tosylates
Organic LettersDOI: 10.1021/acs.orglett.9b03706 (Source: Organic Letters)
Source: Organic Letters - November 5, 2019 Category: Chemistry Authors: Hannah Shenouda and Erik J. Alexanian* Source Type: research

[ASAP] Manganese-Catalyzed Electrochemical Deconstructive Chlorination of Cycloalkanols via Alkoxy Radicals
Organic LettersDOI: 10.1021/acs.orglett.9b03652 (Source: Organic Letters)
Source: Organic Letters - November 5, 2019 Category: Chemistry Authors: Benjamin D. W. Allen †§, Mishra Deepak Hareram†§, Alex C. Seastram†, Tom McBride†, Thomas Wirth‡, Duncan L. Browne*†, and Louis C. Morrill*† Source Type: research

Dysregulation of TFEB contributes to Manganese-induced Autophagic Failure and Mitochondrial Dysfunction in Astrocytes.
Abstract Epidemiological and clinical studies have long shown that exposure to high levels of heavy metals are associated with increased risks of neurodegenerative diseases. It is widely accepted that autophagic dysfunction is involved in pathogenesis of various neurodegenerative disorders; however, the role of heavy metals in regulation of macroautophagy/autophagy is unclear. Here, we show that manganese (Mn) induces a decline in nuclear localization of TFEB (transcription factor EB), a master regulator of the autophagy-lysosome pathway, leading to autophagic dysfunction in astrocytes of mouse striatum. We furthe...
Source: Autophagy - November 5, 2019 Category: Cytology Authors: Zhang Z, Yan J, Bowman AB, Bryan MR, Singh R, Aschner M Tags: Autophagy Source Type: research

A possible relationship between telomere length and markers of neurodegeneration in rat brain after welding fume inhalation exposure.
Abstract Inhalation of welding fume (WF) can result in the deposition of toxic metals, such as manganese (Mn), in the brain and may cause neurological changes in exposed workers. Alterations in telomere length are indicative of cellular aging and, possibly, neurodegeneration. Here, we investigated the effect of WF inhalation on telomere length and markers of neurodegeneration in whole brain tissue in rats. Male Fischer-344 (F-344) rats were exposed by inhalation to stainless steel WF (20 mg/m3 x 3 h/d x 4 d/wk x 5 wk) or filtered air (control). Telomere length, DNA-methylation, gene expression of Trf1, Trf...
Source: Environmental Research - November 5, 2019 Category: Environmental Health Authors: Shoeb M, Mustafa GM, Kodali VK, Smith K, Roach KA, Boyce G, Meighan T, Roberts JR, Erdely A, Antonini JM Tags: Environ Res Source Type: research

Assessment of the nutritional value of various teas infusions in terms of the macro- and trace elements content
ConclusionsGenerally, the infusions of herbal teas to a small extent cover the daily allowance for elements, however they are a valuable complementary source of them. (Source: Journal of Trace Elements in Medicine and Biology)
Source: Journal of Trace Elements in Medicine and Biology - November 4, 2019 Category: Biochemistry Source Type: research

Determination of copper, nickel, manganese and cadmium ions in aqueous samples by flame atomic absorption spectrometry after simultaneous coprecipitation with Co(OH)2
Publication date: November 2019Source: Arabian Journal of Chemistry, Volume 12, Issue 7Author(s): Sayed Zia Mohammadi, Tayebeh Shamspur, Yar Mohammad BaghelaniAbstractA separation-preconcentration procedure was developed for the determination of trace amounts of copper, nickel, manganese and cadmium ions in water samples by flame atomic absorption spectrometry after coprecipitation by Co(OH)2 as a carrier without a chelating agent. The influence of the various analytical parameters such as pH, amount of carrier reagent, standing time, centrifugation rate and time, sample volume and matrix effects on the recovery of the ana...
Source: Arabian Journal of Chemistry - November 4, 2019 Category: Chemistry Source Type: research

Polymeric template assisted synthesis of monodisperse-porous manganese oxide microspheres: A new nanozyme with oxidase-like activity allowing biomolecule determination via bimodal sensing
New J. Chem., 2019, Accepted Manuscript DOI: 10.1039/C9NJ03527C, PaperRukiye Babacan Tosun, Çiğdem Kip, Ali Tuncel “Monodisperse-porous manganese oxide (MnOx) microspheres” that could not be obtained by current protocols were synthesized by a new template assisted method, using porous poly(methacrylic acid-co-ethylene dimethacrylate) microspheres as template. By... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - New J. Chem. latest articles)
Source: RSC - New J. Chem. latest articles - November 4, 2019 Category: Chemistry Authors: Rukiye Babacan Tosun Source Type: research

[ASAP] Yttrium Manganese Oxide Phase Stability and Selectivity Using Lithium Carbonate Assisted Metathesis Reactions
Inorganic ChemistryDOI: 10.1021/acs.inorgchem.9b02075 (Source: Inorganic Chemistry)
Source: Inorganic Chemistry - November 4, 2019 Category: Chemistry Authors: Paul K. Todd, Antoinette M. M. Smith, and James R. Neilson* Source Type: research

Efficient Itaconic Acid Production by Aspergillus terreus –Overcoming the Strong Inhibitory Effect of Manganese
This article is protected by copyright. All rights reserved. (Source: Biotechnology Progress)
Source: Biotechnology Progress - November 4, 2019 Category: Biotechnology Authors: Badal C. Saha, Gregory J. Kennedy Tags: RESEARCH ARTICLE Source Type: research

Effects of palytoxins extracted from Ostreopsis ovata on the oxidative stress and immune responses in Pacific white shrimp Litopenaeus vannamei
Publication date: Available online 2 November 2019Source: Fish & Shellfish ImmunologyAuthor(s): Jingyi Cen, Lei Cui, Yafei Duan, Hua Zhang, Yarou Lin, Jiping Zheng, Songhui LuAbstractPalytoxins (PLTXs) are a group of complex and poisonous marine natural products that are toxic to marine life and even human beings. In the present study, the oxidative stress and immune response in the hepatopancreas and gills of Litopenaeus vannamei were assessed for 72 h after injection with PLTX extracts. Chemical and physiological parameters, e.g., the respiratory burst (O2−), activities of antioxidant enzymes, oxidative damag...
Source: Fish and Shellfish Immunology - November 3, 2019 Category: Biology Source Type: research

Geographical identification of Oryza sativa “MR 220CL” from Peninsular Malaysia using elemental and isotopic profiling
This study examined the elemental and stable isotope compositions of rice samples from MR 220CL cultivar in order to distinguish the geographical origin. A total of 53 rice samples from Kedah (n=27), Selangor (n=20) and Langkawi (n=6) were analyzed for elemental and stable isotope compositions. The instrumental neutron activation analysis was applied to determine the elemental concentrations of aluminum (Al), arsenic (As), bromine (Br), chlorine (Cl), potassium (K), magnesium (Mg), manganese (Mn), sodium (Na), rubidium (Rb) and zinc (Zn) whilst the stable isotopes of δ13Carbon (δ13C) and δ15Nitrogen (&del...
Source: Food Control - November 2, 2019 Category: Food Science Source Type: research

The anticoagulant effect of Apis mellifera phospholipase A 2 is inhibited by CORM-2 via a carbon monoxide-independent mechanism
This study sought to identify anticoagulant properties of bee venom PLA2 via catalysis of plasma phospholipids required for thrombin generation. Another goal was to determine if Ru-based CORM inhibit bee venom PLA2 via carbon monoxide release or via potential binding of reactive Ru species to a key histidine residue in the catalytic site of the enzyme. Anticoagulant activity of bee venom PLA2 was assessed via thrombelastography with normal plasma. Bee venom PLA2 was then exposed to different CORM and a metheme forming agent and anticoagulant activity was reassessed. Using Ru, boron and manganese-based CORM and a metheme fo...
Source: Journal of Thrombosis and Thrombolysis - November 2, 2019 Category: Hematology Source Type: research

Decolorization and degradation potential of enhanced lignocellulolytic enzymes production by pleurotus eryngii using cherry waste from industry
This study is important in terms of dye decolorization and degradation by achieving the enhancement of the activities of seven lignocellulolytic enzymes using various inductors.This article is protected by copyright. All rights reserved (Source: Biotechnology and Applied Biochemistry)
Source: Biotechnology and Applied Biochemistry - November 2, 2019 Category: Biochemistry Authors: Merve Akpinar, Raziye Ozturk Urek Tags: Original Article Source Type: research

Selective synthesis of pyrimidines from cinnamyl alcohols and amidines using the heterogeneous OMS-2 catalyst
Publication date: Available online 31 October 2019Source: Catalysis CommunicationsAuthor(s): Jian Shen, Xu MengAbstractHerein, an efficient aerobic oxidative synthesis of pyrimidines was carried out using cinnamyl alcohols and amidines catalyzed by manganese oxide octahedral molecular sieve (OMS-2). The heterogeneous catalytic method features base-/additive-free conditions, wide substrate scope, use of O2 as a green oxidant, and simple operation. Moreover, the OMS-2 catalyst prepared by the conventional reflux method demonstrates catalytic selectivity, activity, and excellent recyclability.Graphical abstract (Source: Catalysis Communications)
Source: Catalysis Communications - November 1, 2019 Category: Chemistry Source Type: research

An integrative process of the simultaneous catalytic oxidation of NO, Hg0 and toluene from sintering flue gas by the natural ferrous manganese ore
New J. Chem., 2019, Advance Article DOI: 10.1039/C9NJ03697K, PaperLing Shi, Yufeng Chang, Linbo Qin, Xinming Huang, Futang Xing, Wangsheng Chen An integrative process of the simultaneous catalytic oxidation of NO, Hg0 and toluene from sintering flue gas by the natural ferrous manganese ore was studied in fixed bed reactor andin situ DRIFTS. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - New J. Chem. latest articles)
Source: RSC - New J. Chem. latest articles - November 1, 2019 Category: Chemistry Authors: Ling Shi Source Type: research

Manganese-Doped Cerium Oxide Nanocomposite Induced Photodynamic Therapy in MCF-7 Cancer Cells and Antibacterial Activity.
Abstract In this experimental approach, we explored the structures, morphologies, phototoxicities, and antibacterial activities of undoped and Mn-doped ceria nanocomposite materials, Mn x Ce1-x O2. The Mn x Ce1-x O2 nanocomposites were synthesized by employing a soft chemical route. Our prime focus was on the influence of different factors, both physical and chemical, i.e., the concentration of manganese in the product, size of the nanocomposite, drug dose, and incubation time, on the bacterial strains. Different bacterial strains were selected as experimental biological models of the antibacterial activity of the...
Source: Biomed Res - November 1, 2019 Category: Research Authors: Atif M, Iqbal S, Fakhar-E-Alam M, Ismail M, Mansoor Q, Mughal L, Aziz MH, Hanif A, Farooq WA Tags: Biomed Res Int Source Type: research

[ASAP] Thallium Sorption onto Manganese Oxides
Environmental Science& TechnologyDOI: 10.1021/acs.est.9b04454 (Source: Environmental Science and Technology)
Source: Environmental Science and Technology - November 1, 2019 Category: Environmental Health Authors: managing.editor at est.acs.org (American Chemical Society) Source Type: research

The ABCs of Nutrient Deficiencies and Toxicities.
This article reviews the basic sources, absorption, metabolism as well as the signs and symptoms that arise in deficient and toxic states of fat-soluble vitamins, water-soluble vitamins, minerals, and trace elements. [Pediatr Ann. 2019;48(11):e434-e440.]. PMID: 31710362 [PubMed - in process] (Source: Pediatric Annals)
Source: Pediatric Annals - November 1, 2019 Category: Pediatrics Authors: Capone K, Sentongo T Tags: Pediatr Ann Source Type: research

Variations in the Compressive Strength of a Die Stone with Three Different Sulfates at Eight Different Concentrations: An In Vitro Study.
Abstract AIM: The present study aimed to evaluate the alteration in the compressive strength (CS) of the die stone with three different sulfate salt additives, each at eight various concentrations. MATERIALS AND METHODS: The specimens were prepared at specific dimensions (length: 2.5 cm and diameter: 2.5 cm) divided into three test groups based on the type of sulfate additives used [potassium sulfate (K2SO4), zinc sulfate (ZnSO4·H2O), and manganese sulfate (MnSO4·H2O)] and one control group, without any additives. Again, each group was divided into eight subgroups based on concentration of sulfa...
Source: J Contemp Dent Pract - November 1, 2019 Category: Dentistry Authors: Vyas R, Vaddamanu SK, Gurumurthy V, Kuruniyan MS, Quadri SA, Kanji MA Tags: J Contemp Dent Pract Source Type: research

Dual GSH-Exhausting Sorafenib Loaded Manganese-Silica Nanodrugs for Inducing the Ferroptosis of Hepatocellular Carcinoma Cells
Publication date: Available online 31 October 2019Source: International Journal of PharmaceuticsAuthor(s): Hongxia Tang, Danfei Chen, Chaoqun Li, Caihong Zheng, Xiaodong Wu, Yue Zhang, Qianqian Song, Weidong FeiAbstractHepatocellular carcinoma (HCC) is the second leading cause of cancer-related deaths. Unfortunately, there is still no completely effective treatment. Ferroptosis could affect the development of HCC by regulating the level of glutathione (GSH), intracellular lipid peroxidation, and other related substances. This paper introduced a new one-pot reaction for the synthesis of manganese doped mesoporous silica nan...
Source: International Journal of Pharmaceutics - October 31, 2019 Category: Drugs & Pharmacology Source Type: research

Tritium separation from heavy water using a membrane containing deuterated manganese dioxide
This study reports the separation of tritium from tritiated heavy water at room temperature using a membrane containing deuterated manganese dioxide. A continuous decrease in the tritium concentration in tritiated heavy water was observed when using the membrane. Furthermore, the dissolution of manganese ions from the membrane into tritiated heavy water was remarkably decreased by adding an adequate amount of lithium chloride to the tritiated heavy water. (Source: Journal of Radioanalytical and Nuclear Chemistry)
Source: Journal of Radioanalytical and Nuclear Chemistry - October 31, 2019 Category: Nuclear Medicine Source Type: research

Transfer-Dehydrogenation of Secondary Alcohols Catalyzed by Manganese NNN-Pincer Complexes
Chem. Commun., 2019, Accepted Manuscript DOI: 10.1039/C9CC07337J, CommunicationSvenja Budweg, Kathrin Junge, Matthias Beller Novel catalytic systems based on pentacarbonylmanganese bromide and stable NNN-pincer ligands are presented for the transfer-dehydrogenation of secondary alcohols to give the corresponding ketones in good to excellent isolated yields.... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Chem. Commun. latest articles)
Source: RSC - Chem. Commun. latest articles - October 30, 2019 Category: Chemistry Authors: Svenja Budweg Source Type: research

[ASAP] Synergistic Effect of Permanganate and in Situ Synthesized Hydrated Manganese Oxide for Removing Antibiotic Resistance Genes from Wastewater Treatment Plant Effluent
Environmental Science& TechnologyDOI: 10.1021/acs.est.9b05250 (Source: Environmental Science and Technology)
Source: Environmental Science and Technology - October 30, 2019 Category: Environmental Health Authors: managing.editor at est.acs.org (American Chemical Society) Source Type: research

Cognitive profile of patients with manganese-methcathinone encephalopathy.
Abstract Manganese-methcathinone encephalopathy (MME) is a rare parkinsonian syndrome described in drug addicts who have self-injected a home-made mixture containing methcathinone and manganese. We assessed 14 patients with MME and compared their results with 14 matched control subjects. The patients had a parkinsonian syndrome with symmetrical bradykinesia, dystonias, and postural, gait and speech impairment, with moderate restrictions in activities of daily living. Their cognitive status was assessed with the Russian version of the Wechsler Adult Intelligence Scale (WAIS) and with tests of attention (Trail Makin...
Source: Neurotoxicology - October 30, 2019 Category: Neurology Authors: Ennok M, Sikk K, Haldre S, Taba P Tags: Neurotoxicology Source Type: research

The modifications of cell wall composition and water status of cucumber leaves induced by powdery mildew and manganese nutrition
Publication date: Available online 28 October 2019Source: Plant Physiology and BiochemistryAuthor(s): S. Eskandari, B. SharifnabiAbstractPowdery mildew caused by Podosphaera fuliginea, is one of the most important diseases, damaging cucumber's yield worldwide. Among the different controlling ways, management of plant nutrition is an effective method. The present experiment was aimed to study the effects of foliar application of manganese (Mn) on disease suppression and to elucidate the possible mechanisms by which Mn-treated plants resist to fungal disease. Cucumber plants were hydroponically grown and sprayed by MnSO4 alo...
Source: Plant Physiology and Biochemistry - October 29, 2019 Category: Biochemistry Source Type: research

Assessment of copper, iron, zinc and manganese status and speciation in patients with Parkinson's disease: a pilot study
ConclusionsMetal speciation is significantly affected in serum of PD-patients. These findings are indicative of the potential role of metal metabolism and PD pathogenesis, although the exact mechanisms of such associations require further detailed studies. (Source: Journal of Trace Elements in Medicine and Biology)
Source: Journal of Trace Elements in Medicine and Biology - October 29, 2019 Category: Biochemistry Source Type: research

The azide-alkyne cycloaddition catalysed by transition metal oxide nanoparticles
New J. Chem., 2019, Accepted Manuscript DOI: 10.1039/C9NJ04690A, PaperGiorgio Molteni, Anna Maria Ferretti, Mario Italo Trioni, Fausto Cargnoni, Alessandro Ponti Colloidal nanoparticles of Earth-abundant, first-row transition metal oxides and sulfide, namely magnetite (Fe3O4), manganese and cobalt ferrite, (MnFe2O4, CoFe2O4), manganese(II) oxide (MnO) and sulfide ( α-MnS), were used as catalysts in... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - New J. Chem. latest articles)
Source: RSC - New J. Chem. latest articles - October 29, 2019 Category: Chemistry Authors: Giorgio Molteni Source Type: research

[ASAP] Direct Synthesis of Cycloalkanes from Diols and Secondary Alcohols or Ketones Using a Homogeneous Manganese Catalyst
Journal of the American Chemical SocietyDOI: 10.1021/jacs.9b08832 (Source: Journal of the American Chemical Society)
Source: Journal of the American Chemical Society - October 29, 2019 Category: Chemistry Authors: Akash Kaithal †‡, Lisa-Lou Gracia‡, Cle´ment Camp‡, Elsje Alessandra Quadrelli‡, and Walter Leitner*†§ Source Type: research

Manganese modifies Neurotrophin-3 (NT3) and its tropomyosin receptor kinase C (TrkC) in the cortex: Implications for manganese-induced neurotoxicity.
This study showed that subacute Mn exposure significantly increased the levels of pro-apoptotic Bax while decreasing the levels of anti-apoptotic Bcl 2 in the cortex compared with the corresponding control. Markedly reduced NT3 and TrkC levels along with decreased Ras/MAPK and PI3/Akt signaling in the cortex were observed following subacute Mn exposure. We further found increased levels of Bax, cleaved caspase-3, and the total apoptosis rate, and decreased levels of Bcl2, NT3, TrkC, and Ras/MAPK and PI3/Akt signaling in Mn-treated primary cortical neurons. Pretreatment with hNT3 or Z-VAD-FAM ameliorated Mn-induced apoptosi...
Source: Food and Chemical Toxicology - October 29, 2019 Category: Food Science Authors: Yang Y, Wei F, Wang J, Chen R, Zhang J, Li D, Gan D, Yang X, Zou Y Tags: Food Chem Toxicol Source Type: research

Nanoparticle ‐Embedded Electrospun Fiber–Covered Stent to Assist Intraluminal Photodynamic Treatment of Oesophageal Cancer
Electrospun fiber –covered stents as a nanoparticle delivery platform of photodynamic therapy (PDT) to assist orthotopic esophageal tumor therapy are proposed. The hypoxic microenvironment can be alleviated by the reaction of manganese dioxide in the fibers with tumor endogenous hydrogen peroxide. The functional fi ber‐covered stents can effectively exert the PDT effect as a noninvasive method for patients with advanced‐stage esophageal cancer. AbstractDrug ‐eluting stents (DESs) are promising candidates for treating human oesophageal cancer. However, the use of DESs to assist photodynamic therapy (PDT) of orth...
Source: Small - October 28, 2019 Category: Nanotechnology Authors: Junyuan Xiao, Liang Cheng, Tonglei Fang, Yiran Zhang, Jia Zhou, Ruoyu Cheng, Wantao Tang, Xiaoyan Zhong, Yong Lu, Lianfu Deng, Yingsheng Cheng, Yueqi Zhu, Zhuang Liu, Wenguo Cui Tags: Communication Source Type: research

Fixed bed column and artificial neural network model to predict heavy metals adsorption dynamic on surfactant decorated graphene
Publication date: Available online 25 October 2019Source: Colloids and Surfaces A: Physicochemical and Engineering AspectsAuthor(s): Mohammed Yusuf, Kang Song, Lu LiAbstractDynamic studies to test the copper (Cu2+) and manganese (Mn2+) adsorption efficacies on sodium dodecyl sulfate modified graphene (GN-SDS) were conducted. A fixed bed column adsorption performance was assessed by Thomas and Bed Depth Service Time (BDST) model. The adoption capacity of fixed bed was increased with increasing depth; while gradually increasing flow rate negatively affected the adsorption ratio. The optimal adsorption capacities for Cu2+ wer...
Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects - October 26, 2019 Category: Chemistry Source Type: research

Withdrawal of high-carbohydrate high-fat diet alters status of trace elements to ameliorate metabolic syndrome in rat
Publication date: Available online 25 October 2019Source: Canadian Journal of DiabetesAuthor(s): Himadri Kalita, Ankita Hazarika, Rajlakshmi DeviAbstractIntroductionInadequate nutrient supply and insulin resistance help in the pathogenesis of metabolic syndrome (MetS) and increase the risk of developing cardiovascular disease. MetS can be induced by the prolonged feeding of high-carbohydrate high-fat (HCHF)-diet. The present study was designed taking Wistar albino rats as model for human to investigate the effect of sub-chronic withdrawal of HCHF-diet during MetS on distribution of copper (Cu), iron (Fe), magnesium (Mg), m...
Source: Canadian Journal of Diabetes - October 26, 2019 Category: Endocrinology Source Type: research

Facile Synthesis of SiO2@MnO2 Nanocomposites and Their Applications on Platforms for Sensitively Sensing Antibiotics and Glutathione
Publication date: Available online 24 October 2019Source: Sensors and Actuators B: ChemicalAuthor(s): Tao Peng, Xinhua Dai, Yanfang Zhang, Pimiao Zheng, Jianyi Wang, Sihan Wang, Zile Wang, Yuyang Zeng, Jiancheng Li, Haiyang JiangABSTRACTIn 2-(N-morpholino)ethanesulfonic acid buffer (0.1 M, pH 6.0), manganese dioxide-modified silicon dioxide (SiO2@MnO2) nanocomposites were facilely synthesized under ultrasonic conditions. Given their good biocompatibility and evident brown color, SiO2@MnO2 nanocomposites were used as labels in immunochromatography sensor for high-throughput screening of antibiotic residues in milk wi...
Source: Sensors and Actuators B: Chemical - October 25, 2019 Category: Chemistry Source Type: research

Steam reforming of ethylene over manganese-chromium spinel oxides
Publication date: Available online 24 October 2019Source: Journal of CatalysisAuthor(s): Lu Yang, Maxim P. Bukhovko, Gordon Brezicki, Andrzej Malek, Liwei Li, Christopher W. Jones, Pradeep K. Agrawal, Robert J. DavisAbstractA series of Mn-Cr-O spinel catalysts of different stoichiometry was synthesized using a sol-gel method and characterized using X-ray diffraction, X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, N2 and H2O adsorption, and H2-temperature programmed reduction. The introduction of extra Mn to stoichiometric MnCr2O4 led to Mn3+ substitution in the spinel lattice of Mn1.5Cr1.5O4 whereas exces...
Source: Journal of Catalysis - October 25, 2019 Category: Chemistry Source Type: research

Light Response of Three Water-Soluble MnI PhotoCORMs: Spectroscopic Features and CO Release Investigation
Currently, there is great interest in the study of water-soluble metal compounds capable of releasing carbon monoxide, due to their potential therapeutic use. This paper reports the synthesis, spectroscopic characteristics and CO release properties of three water-soluble manganese(I) carbonyl compounds [Mn(aaz)(CO)3]Br (1; where aaz = 6-amino-6-methylperhydro-1,4-diazepine), [Mn(Me2aaz)(CO)3]Br (2; where Me2aaz = 6-amino-1,4,6-trimethyl-1,4-diazacycloheptane) and [Mn(tacn)(CO)3]Br (3; where tacn = 1,4,7-triazacyclononane), that can act as photoCORMs (where CORM is carbon monoxide-releasing molecule). The main aim was to pr...
Source: Journal of the Brazilian Chemical Society - October 25, 2019 Category: Chemistry Source Type: research

Association mapping of magnesium and manganese concentrations in the seeds of C. arietinum and C. reticulatum.
The objectives of this study were to characterize genetic variability in the seed Mg and Mn concentrations and identify single nucleotide polymorphism (SNP) markers associated with these traits in 107 Cicer reticulatum and 73C. arietinum genotypes, using a genome wide association study. The genotypes were grown in four environments, characterized for Mg and Mn concentrations, and genotyped with 121,841 SNP markers. The population showed three-fold and two-fold variation for the Mg and Mn concentrations, respectively. The population structure was identified using STRUCTURE software, which divided 180 genotypes into two (K...
Source: Genomics - October 25, 2019 Category: Genetics & Stem Cells Authors: Karaca N, Ates D, Nemli S, Ozkuru E, Yilmaz H, Yagmur B, Kartal C, Tosun M, Ocak OO, Otles S, Kahriman A, Tanyolac MB Tags: Genomics Source Type: research

Construction of Bi/phthalocyanine manganese nanocomposite for trimodal imaging directed photodynamic and photothermal therapy mediated by 808  nm light.
Construction of Bi/phthalocyanine manganese nanocomposite for trimodal imaging directed photodynamic and photothermal therapy mediated by 808 nm light. Biomaterials. 2019 Oct 25;228:119569 Authors: Wang Z, Jia T, Sun Q, Kuang Y, Liu B, Xu M, Zhu H, He F, Gai S, Yang P Abstract The current conventional photo-therapeutic agents often show low therapy efficacy because of their single treatment model, the limited penetration depth of excitation light and hypoxia in the tumor microenvironment (TME). Herein, a new type of phthalocyanine manganese (MnPcE4) photosensitizer with strong NIR absorption was des...
Source: Biomaterials - October 25, 2019 Category: Materials Science Authors: Wang Z, Jia T, Sun Q, Kuang Y, Liu B, Xu M, Zhu H, He F, Gai S, Yang P Tags: Biomaterials Source Type: research

Effects of β‑hydroxybutyric acid and ghrelin on the motility and inflammation of gastric antral smooth muscle cells involving the regulation of growth hormone secretagogue receptor.
Effects of β‑hydroxybutyric acid and ghrelin on the motility and inflammation of gastric antral smooth muscle cells involving the regulation of growth hormone secretagogue receptor. Mol Med Rep. 2019 Oct 11;: Authors: Hu X, You L, Hu C, Wu J, Ai M, He X, Huang W, Wu Z Abstract Ghrelin is an orexigenic hormone that is produced by gastric cells. Ghrelin stimulates food intake and increases gastric movement. In rat model, injected β‑hydroxybutyric acid (β‑HB) leads to a decrease in body weight. It has been reported that patients with gastric erosions are slower to evacuate the stomach...
Source: Molecular Medicine Reports - October 24, 2019 Category: Molecular Biology Tags: Mol Med Rep Source Type: research