The Versatility of Opportunistic Infections Caused by Gemella Isolates Is Supported by the Carriage of Virulence Factors From Multiple Origins
The molecular basis of the pathogenesis of the opportunistic invasive infections caused by isolates of the Gemella genus remains largely unknown. Moreover, inconsistencies in the current species assignation were detected after genome-level comparison of 16 public Gemella isolates. A literature search detected that, between the two most pathogenic species, Gemella morbillorum causes about twice the number of cases compared to Gemella haemolysans. These two species shared their mean diseases – sepsis and endocarditis – but differed in causing other syndromes. A number of well-known virulence factors were harbored...
Source: Frontiers in Microbiology - March 31, 2020 Category: Microbiology Source Type: research
Manganese oxide functionalized silk fibers for enzyme mimic application
Publication date: June 2020Source: Reactive and Functional Polymers, Volume 151Author(s): Manish Singh, Estera S. Dey, Cedric Dicko (Source: Reactive and Functional Polymers)
Source: Reactive and Functional Polymers - March 30, 2020 Category: Chemistry Source Type: research
Apoptotic Markers Are Increased in Epilepsy Patients: A Relation with Manganese Superoxide Dismutase Ala16Val Polymorphism and Seizure Type through IL-1 β and IL-6 Pathways.
Apoptotic Markers Are Increased in Epilepsy Patients: A Relation with Manganese Superoxide Dismutase Ala16Val Polymorphism and Seizure Type through IL-1β and IL-6 Pathways. Biomed Res Int. 2020;2020:6250429 Authors: Kegler A, Caprara ALF, Pascotini ET, Arend J, Gabbi P, Duarte MMMF, Furian AF, Oliveira MS, Royes LFF, Fighera MR Abstract The MnSOD Ala16Val single nucleotide polymorphism (SNP) has been associated with different diseases. However, there are scarcely studies relating this SNP in epilepsy, a neurologic disease that involves some interacting pathways, such as apoptotic and inflammatory...
Source: Biomed Res - March 30, 2020 Category: Research Authors: Kegler A, Caprara ALF, Pascotini ET, Arend J, Gabbi P, Duarte MMMF, Furian AF, Oliveira MS, Royes LFF, Fighera MR Tags: Biomed Res Int Source Type: research
Manganese Dioxide-Filled Hierarchical Porous Nanofiber Membrane for Indoor Air Cleaning at Room Temperature
Publication date: Available online 27 March 2020Source: Journal of Membrane ScienceAuthor(s): Min Hu, Linghui Yin, Huixian Zhou, Lvxiong Wu, Kai Yuan, Bing Pan, Zhaoxiang Zhong, Weihong Xing (Source: Journal of Membrane Science)
Source: Journal of Membrane Science - March 29, 2020 Category: Materials Science Source Type: research
Homogeneous activation of peroxymonosulfate using a low-dosage cross-bridged cyclam manganese(II) complex for organic pollutant degradation via a nonradical pathway
Publication date: 15 July 2020Source: Journal of Hazardous Materials, Volume 394Author(s): Yuqing Yu, Peng Tan, Xinjue Huang, Junjie Tao, Yingying Liu, Raymond Jianxiong Zeng, Man Chen, Shungui Zhou (Source: Journal of Hazardous Materials)
Source: Journal of Hazardous Materials - March 27, 2020 Category: Environmental Health Source Type: research
Electrocatalysts: Synergistic Control of Structural Disorder and Surface Bonding Nature to Optimize the Functionality of Manganese Oxide as an Electrocatalyst and a Cathode for Li –O2 Batteries (Small 12/2020)
In article numberhttps://doi.org/10.1002/smll.2019032651903265, Yong ‐Mook Kang, Seong‐Ju Hwang, and co‐workers develop an efficient way to improve the electrocatalyst and Li–O2 battery performances of metal oxide via synergistic control of structural disorder and surface bonding nature. The amorphization and iodate anchoring are quite effective in improving electrocatalyst/electrode functionalities of δ‐MnO2 via the alteration of surface bonding character, the stabilization of Mn3+ species, and the enhanced charge transfer of interfaces. (Source: Small)
Source: Small - March 27, 2020 Category: Nanotechnology Authors: Xiaoyan Jin, Mihui Park, Seung ‐Jae Shin, Yujin Jo, Min Gyu Kim, Hyungjun Kim, Yong‐Mook Kang, Seong‐Ju Hwang Tags: Inside Front Cover Source Type: research
Facile preparation of high-performance cobalt–manganese layered double hydroxide/polypyrrole composite for battery-type asymmetric supercapacitors
Publication date: Available online 26 March 2020Source: Journal of Alloys and CompoundsAuthor(s): Yujin Guo, Shuo Zhang, Jiachen Wang, Zhiwei Liu, Youzhi Liu (Source: Journal of Alloys and Compounds)
Source: Journal of Alloys and Compounds - March 27, 2020 Category: Chemistry Source Type: research
Effect of A-site element on the performance of 3DOM manganese-based perovskite catalyst
Publication date: Available online 26 March 2020Source: Journal of Saudi Chemical SocietyAuthor(s): Xin Liu, Yongqiang Wang, Meng Zang, Lin Shi, Huiying Zhang, Chaocheng Zhao (Source: Journal of Saudi Chemical Society)
Source: Journal of Saudi Chemical Society - March 26, 2020 Category: Chemistry Source Type: research
Formation, stability and catalase-like activity of mononuclear manganese(II) and oxomanganese(IV) complexes in protic and aprotic solvents
New J. Chem., 2020, Advance Article DOI: 10.1039/C9NJ06004A, PaperBal ázs Kripli, Zoltán Garda, Bernadett Sólyom, Gyula Tircsó, József Kaizer Catalytic and stoichiometric H2O2 oxidation by [MnII(N4Py*)]2+ and [MnIV(N4Py*)(O)]2+ complexes as catalase mimics have been carried out. 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 - March 26, 2020 Category: Chemistry Authors: Bal ázs Kripli Source Type: research
IJERPH, Vol. 17, Pages 2231: Health Risk Assessment and Source Apportionment of Mercury, Lead, Cadmium, Selenium, and Manganese in Japanese Women: An Adjunct Study to the Japan Environment and Children ’s Study
In this study, we elucidated the major routes of exposure to three toxic elements (mercury, cadmium, and lead) and two essential elements (manganese and selenium) through diet, soil, house dust, and indoor air and assessed the potential health risks from these elements on women from the coastal area of Miyagi prefecture, Japan. Twenty-four-hour duplicate diet, house dust, soil, and indoor air samples were collected from 37 participants. Cd, Pb, Mn, and Se concentrations were measured using inductively coupled plasma mass spectrometry, and Hg concentrations using cold vapor atomic absorption spectrometry. We found that soil...
Source: International Journal of Environmental Research and Public Health - March 26, 2020 Category: Environmental Health Authors: Ma Iwai-Shimada Tatsuta Nakai Isobe Takagi Nishihama Nakayama Tags: Article Source Type: research
Mn(III)-Mediated Facile Access to Polysubstituted α-Naphthols from β-Keto Ester Derivatives and Terminal Alkynes
Synthesis DOI: 10.1055/s-0039-1690870 A novel manganese-mediated reaction for the synthesis of polysubstituted α-naphthols has been developed from β-keto esters and terminal alkynes. This system holds the advantages of readily available starting materials and mild conditions. Mechanistic investigations revealed that this reaction proceeds via a tandem radical cyclization process. [...] © Georg Thieme Verlag Stuttgart · New YorkArticle in Thieme eJournals: Table of contents | Abstract | Full text (Source: Synthesis)
Source: Synthesis - March 26, 2020 Category: Chemistry Authors: He, Lisheng Yang, Yuzhu Li, Fei Liu, Xiaolan Pan, Weidong Tags: paper Source Type: research
‘Graphene-MnO2’ Composite Supercapacitor Material accomplished tactically by using Liquid-Liquid and Solid-Liquid Interface Reaction Techniques.
New J. Chem., 2020, Accepted Manuscript DOI: 10.1039/C9NJ05898B, PaperSagar H. Patil, Aarti P. Gaikwad, Babasaheb J Waghmode, shivaram Dattatray sathaye, Kashinath Patil A novel methodology is described to grow architecture of 3-dimensional graphene nanosheets (GNS)-manganese oxide (MnO2) composite material to be used in supercapacitors. In situ growth of the three dimensional MnO2... 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 - March 25, 2020 Category: Chemistry Authors: Sagar H. Patil Source Type: research
Unambiguous localization of titanium and iron cations in doped manganese hollandite nanowires
Chem. Commun., 2020, Accepted Manuscript DOI: 10.1039/D0CC01888K, CommunicationJos é M González-Calbet, Isabel Gómez-Recio, Alberto Azor-Lafarga, Luisa Ruiz-Gonzalez, María Hernando, Marina Parras, José Juan Calvino, Maria Teresa Fernandez-Diaz, David Portehault, Clément Sanchez New insights into the chemical and structural features of iron or titanium-doped KxMnO2 hollandites are reported. Neutron diffraction and atomically resolved transmission electron microscopy elucidate the localization of the dopant... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: ...
Source: RSC - Chem. Commun. latest articles - March 25, 2020 Category: Chemistry Authors: Jos é M González-Calbet Source Type: research
Synthesis of manganese dioxide nanorods-anchored graphene oxide composite for highly sensitive electrochemical sensing of dopamine
Analyst, 2020, Accepted Manuscript DOI: 10.1039/D0AN00348D, PaperZhanjun Yang, Juan Li, Huifang Shen, Suhua Yu, Geshan Zhang, Chuanli Ren, Xiaoya Hu In this research, a novel manganese dioxide nanorods-anckored graphene oxide (MnO2 NRs/GO) composite was synthesized by a simple hydrothermal method for the electrochemical sening application. A highly sensitive electrochemical sensor... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Analyst latest articles)
Source: RSC - Analyst latest articles - March 25, 2020 Category: Chemistry Authors: Zhanjun Yang Source Type: research
[ASAP] Zinc and Molybdenum Co-Doped BiVO < sub > 4 < /sub > Nanoarray for Photoelectrochemical Diethylstilbestrol Analysis Based on the Dual-Competitive System of Manganese Hexacyanoferrate Hydrate Nanocubes
ACS Applied Materials& InterfacesDOI: 10.1021/acsami.0c04010 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - March 25, 2020 Category: Materials Science Authors: Yanrong Qian, Jinhui Feng, Rui Xu, Dawei Fan, Yu Du*, Xiang Ren*, Qin Wei, and Huangxian Ju Source Type: research
IJERPH, Vol. 17, Pages 2204: Toxic Metal Implications on Agricultural Soils, Plants, Animals, Aquatic life and Human Health
avumengwana The problem of environmental pollution is a global concern as it affects the entire ecosystem. There is a cyclic revolution of pollutants from industrial waste or anthropogenic sources into the environment, farmlands, plants, livestock and subsequently humans through the food chain. Most of the toxic metal cases in Africa and other developing nations are a result of industrialization coupled with poor effluent disposal and management. Due to widespread mining activities in South Africa, pollution is a common site with devastating consequences on the health of animals and humans likewise. In recent years, ta...
Source: International Journal of Environmental Research and Public Health - March 25, 2020 Category: Environmental Health Authors: Uchenna Okereafor Mamookho Makhatha Lukhanyo Mekuto Nkemdinma Uche-Okereafor Tendani Sebola Vuyo Mavumengwana Tags: Review Source Type: research
Recent trends of MnO2 derived adsorbents for water treatment: a review
New J. Chem., 2020, Accepted Manuscript DOI: 10.1039/C9NJ06392G, PerspectiveHusnain M. Syed Muhammad, Umar Asim, Azra Yaqub, Faisal Shahzad, Naseem Abbas Over the years, manganese dioxide (MnO2) and its different allotropes have gained significant research attention in the field of wastewater treatment because of their exciting physicochemical properties. This review covers... 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 - March 24, 2020 Category: Chemistry Authors: Husnain M. Syed Muhammad Source Type: research
A plasma-image-assisted method for matrix effect correction in laser-induced breakdown spectroscopy.
Abstract The matrix effect is one of the main bottlenecks for the laser-induced breakdown spectroscopy (LIBS) technique. In this work, image-assisted, laser-induced breakdown spectroscopy (IA-LIBS) based on the Lomakin-Scherbe formula was put forward as a correction to the matrix effect. The brightness and area information in the plasma image was extracted to correct the spectral line intensities among which the brightness information characterizes the plasma temperature, and the area information characterizes the ablative mass. To verify the feasibility of this method, the experiment was conducted on metal sample...
Source: Analytica Chimica Acta - March 24, 2020 Category: Chemistry Authors: Zhang D, Chu Y, Ma S, Zhang S, Cui H, Hu Z, Chen F, Sheng Z, Guo L, Lu Y Tags: Anal Chim Acta Source Type: research
In vivo Activity of Copper(II), Manganese(II), and Silver(I) 1,10-Phenanthroline Chelates Against Candida haemulonii Using the Galleria mellonella Model
This study utilized larvae of Galleria mellonella, a widely used model of in vivo infection, to examine C. haemulonii infection characteristics in response to different copper(II), manganese(II), and silver(I) chelates containing phen, which had demonstrated potent anti-C. haemulonii activity in a previous study. The results showed that C. haemulonii virulence was influenced by inoculum size and incubation temperature, and the host G. mellonella immune response was triggered in an inoculum-dependent manner reflected by the number of circulating immune cells (hemocytes) and observance of larval melanization process. All tes...
Source: Frontiers in Microbiology - March 24, 2020 Category: Microbiology Source Type: research
IJERPH, Vol. 17, Pages 2146: Cancer and Non-Cancer Risk Concerns from Metals in Electronic Cigarette Liquids and Aerosols
sa Wu We evaluated metal concentrations in e-liquids and e-aerosols from eight studies and estimated the range of corresponding cancer and non-cancer risks. Chromium and nickel were the leading contributors to cancer risk, with minor contributions from cadmium, lead, and arsenic. The increased cancer risks, assuming exposure to 2 mL/day, ranged from 5.7 to 30,000 additional cancers in a million e-cigarette users. The average cancer risk was 3 in 1000. Cancer risks in the mid to upper end of these ranges exceed acceptable levels. The hazard quotient (HQ) approach was used to evaluate non-cancer risks. Hazard quotients e...
Source: International Journal of Environmental Research and Public Health - March 24, 2020 Category: Environmental Health Authors: Jefferson Fowles Tracy Barreau Nerissa Wu Tags: Article Source Type: research
Copper catalysed oxidative α-sulfonylation of branched aldehydes using the acid enhanced reactivity of manganese(iv) oxide.
Copper catalysed oxidative α-sulfonylation of branched aldehydes using the acid enhanced reactivity of manganese(iv) oxide. Chem Commun (Camb). 2020 Mar 24;: Authors: Higham JI, Bull JA Abstract The oxidative coupling of secondary aldehydes and sulfinate salts is achieved using copper catalysis to form α-sulfonyl aldehydes. The use of an acidic co-solvent is important to adjust the oxidation potential of MnO2 as an oxidant. A broad range of sulfonylated aldehydes is prepared, and their further functionalisation is demonstrated. A dual ionic/radical pathway mechanism is proposed. PMID:...
Source: Chemical Communications - March 24, 2020 Category: Chemistry Authors: Higham JI, Bull JA Tags: Chem Commun (Camb) Source Type: research
Distribution, accumulation, and potential risks of heavy metals in soil and tea leaves from geologically different plantations.
This study aimed to estimate the impacts of geological difference on distribution of cadmium (Cd), lead (Pb), thallium (Tl), mercury (Hg), arsenic (As), antimony (Sb), chromium (Cr), nickel (Ni), and manganese (Mn) in soils and their accumulation in tea leaves, and further evaluate their health risks. 22 soils and corresponding young tea leaves (YTL) and old tea leaves (OTL), from geologically different plantations, were sampled and analyzed. Results showed that heavy metals concentrations in soils, derived from Permian limestone and Cambrian weakly mineralized dolomite, were obviously greater than those from Silurian clas...
Source: Ecotoxicology and Environmental Safety - March 21, 2020 Category: Environmental Health Authors: Zhang J, Yang R, Li YC, Peng Y, Wen X, Ni X Tags: Ecotoxicol Environ Saf Source Type: research
Chemical and Colloidal Dynamics of MnO2 Nanosheets in Biological Media Relevant for Nanosafety Assessment
Manganese dioxide (MnO2) nanosheets undergo complex reductive dissolution in the presence of diverse biomolecular reducing agents. When dissolution in cell culture media is slow, intact nanosheets can enter cells, where they can deplete intracellular glutathione and induce cytotoxicity through intracellular Mn2+ release. The results are used to classify MnO2 nanosheets within a new biopersistence ‐based hazard screening framework for 2D materials. AbstractMany layered crystal phases can be exfoliated or assembled into ultrathin 2D nanosheets with novel properties not achievable by particulate or fibrous nanoforms. Among ...
Source: Small - March 20, 2020 Category: Nanotechnology Authors: Evan P. Gray, Cynthia L. Browning, Charles A. Vaslet, Kyle D. Gion, Allen Green, Muchun Liu, Agnes B. Kane, Robert H. Hurt Tags: Full Paper Source Type: research
Design of a high strength, high ductility 12 wt% Mn medium manganese steel with hierarchical deformation behaviour
Publication date: Available online 19 March 2020Source: Materials Science and Engineering: AAuthor(s): T.W.J. Kwok, K.M. Rahman, X. Xu, I. Bantounas, J.F. Kelleher, S. Dasari, T. Alam, R. Banerjee, D. Dye (Source: Materials Science and Engineering: A)
Source: Materials Science and Engineering: A - March 20, 2020 Category: Materials Science Source Type: research
Unraveling the effects on lithium-ion cathode performance by cation doping M –Li2CuO2 solid solution samples (M = Mn, Fe and Ni)
Dalton Trans., 2020, Advance Article DOI: 10.1039/D0DT00273A, PaperM. A. Mart ínez-Cruz, A. Yañez-Aulestia, G. Ramos-Sánchez, M. Oliver-Tolentino, M. Vera, H. Pfeiffer, D. Ramírez-Rosales, I. González Manganese partial substitution reveals a drastic improvement in the electrochemical stability of Li2CuO2 during the charge/discharge processes, this is attributed to the increase in the superexchange interaction between copper sites and manganese. 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 C...
Source: RSC - Dalton Trans. latest articles - March 20, 2020 Category: Chemistry Authors: M. A. Mart ínez-Cruz Source Type: research
Effects of location, climate, soil conditions and plant species on levels of potentially toxic elements in Chinese Prickly Ash pericarps from the main cultivation regions in China.
This study reports levels of aluminium (Al), arsenic (As), cadmium (Cd), lead (Pb), manganese (Mn) and nickel (Ni) in the soils where Chinese Prickly Ash - Zanthoxylum bungeanum (ZB) and Z. armatum (ZA) are grown. Soil and pericarp samples were taken from 72 ZB and ZA plantations in 12 provinces. The soil pollution index (PI) was generally low for As (0.04-0.35), Pb (0.01-0.74) and Ni (0.15-1.06). The PI was higher for Cd (0.06-6.99) and was assessed at three categorical levels: 'low' (in 26% of soils), 'moderate' (in 67% of soils) and high (in 7% of soils). The majority (94%) of soils were slightly polluted with...
Source: Chemosphere - March 20, 2020 Category: Chemistry Authors: Ma Y, Fei X, Li J, Liu Y, Wei A Tags: Chemosphere Source Type: research
Manganese Catalyzed Selective Hydrogenation of Cyclic Imides to Diols and Amines
Green Chem., 2020, Accepted Manuscript DOI: 10.1039/D0GC00570C, CommunicationUttam Kumar Das, Trevor Janes, Amit Kumar, David Milstein Herein we report the selective hydrogenation of cyclic imides to diols and amines, homogeneously catalyzed for the first time by a complex of an earth-abundant metal, a manganese pincer complex.... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Green Chem. latest articles)
Source: RSC - Green Chem. latest articles - March 20, 2020 Category: Chemistry Authors: Uttam Kumar Das Source Type: research
The human Golgi protein TMEM165 transports calcium and manganese in yeast and bacterial cells [Molecular Bases of Disease]
Cases of congenital disorders of glycosylation (CDG) have been associated with specific mutations within the gene encoding the human Golgi TMEM165 (transmembrane protein 165), belonging to UPF0016 (uncharacterized protein family 0016), a family of secondary ion transporters. To date, members of this family have been reported to be involved in calcium, manganese, and pH homeostases. Although it has been suggested that TMEM165 has cation transport activity, direct evidence for its Ca2+- and Mn2+-transporting activities is still lacking. Here, we functionally characterized human TMEM165 by heterologously expressing it in budd...
Source: Journal of Biological Chemistry - March 20, 2020 Category: Chemistry Authors: Jiri Stribny, Louise Thines, Antoine Deschamps, Philippe Goffin, Pierre Morsomme Tags: Membrane Biology Source Type: research
Identification of a selective manganese ionophore that enables nonlethal quantification of cellular manganese [Cell Biology]
We describe this activity and the development and implementation of an assay centered on this small molecule, named manganese-extracting small molecule (MESM). Using inductively-coupled plasma–MS, we validated that this assay, termed here “manganese-extracting small molecule estimation route” (MESMER), can accurately assess Mn in mammalian cells. Furthermore, we found evidence that MESM acts as a Mn-selective ionophore, and we observed that it has increased rates of Mn membrane transport, reduced cytotoxicity, and increased selectivity for Mn over calcium compared with two established Mn ionophores, calci...
Source: Journal of Biological Chemistry - March 20, 2020 Category: Chemistry Authors: Kyle J. Horning, Piyush Joshi, Rachana Nitin, Rekha C. Balachandran, Frank M. Yanko, Kwangho Kim, Plamen Christov, Michael Aschner, Gary A. Sulikowski, C. David Weaver, Aaron B. Bowman Tags: Methods and Resources Source Type: research
Vibrio parahaemolyticus Infection Influenced Trace Element Homeostasis, Impaired Antioxidant Function, and Induced Inflammation Response in Litopenaeus vannamei.
Abstract Vibrio parahaemolyticus (V. parahaemolyticus) caused huge diseases and economic losses in shrimp aquaculture. Understanding the infection mechanism might help develop new strategies for controlling pathogen outbreak. Redistribution of trace element homeostasis, accompanied by impairment of antioxidant status and immune response, was observed during various infections. Accordingly, we hypothesized that V. parahaemolyticus infection might influence trace element homeostasis, impair antioxidant function, and induce inflammation response in shrimp. In the present study, the aim of this study was to investigat...
Source: Biological Trace Element Research - March 20, 2020 Category: Biology Authors: Jiao L, Dai T, Zhong S, Jin M, Sun P, Zhou Q Tags: Biol Trace Elem Res Source Type: research
Introduction of manganese based lithium-ion Sieve-A review
Publication date: Available online 19 March 2020Source: Progress in Natural Science: Materials InternationalAuthor(s): Ding Weng, Haoyue Duan, Yacong Hou, Jing Huo, Lei Chen, Fang Zhang, Jiadao Wang (Source: Progress in Natural Science: Materials International)
Source: Progress in Natural Science: Materials International - March 19, 2020 Category: Materials Science Source Type: research
Formation, stability and catalase-like activity of a mononuclear manganese(II) and oxomanganese(IV) complexes in protic and aprotic solvents
New J. Chem., 2020, Accepted Manuscript DOI: 10.1039/C9NJ06004A, PaperBal ázs Kripli, Zoltán Garda, Bernadett Sólyom, Gyula Tircsó, József Kaizer for the detoxification of H2O2, and may give further information about the role of the metal cofactors during the dismutation process. In this work we present the synthesis and characterization... 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 - March 19, 2020 Category: Chemistry Authors: Bal ázs Kripli Source Type: research
Synthetic manganese-calcium cluster similar to the catalyst of Photosystem II: Challenges for biomimetic water oxidation
Dalton Trans., 2020, Accepted Manuscript DOI: 10.1039/D0DT00536C, PaperYounes Mousazadeh, Mohammad Reza Mohammadi, Robabeh Bagheri, Rahman Bikas, Petko Chernev, Zhenlun Song, Tadeusz Lis, Milosz Siczek, Nader Noshiranzadeh, stephan mebs, Holger Dau, Ivelina Zaharieva, Mohammad Mahdi Najafpour Herein, we report the synthesis, characterization, crystal structure, density functional theory calculations, and water-oxidizing activity of a pivalate Mn-Ca cluster. All of the manganese atoms in the cluster are Mn... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Dalton Trans. latest articles)
Source: RSC - Dalton Trans. latest articles - March 19, 2020 Category: Chemistry Authors: Younes Mousazadeh Source Type: research
Safety ‐by‐Design of Metal Oxide Nanoparticles Based on the Regulation of their Energy Edges
Various transition metals are doped into Mn3O4 NPs, aiming at tuning theirEf far away fromEv and significantly reducing their toxicity. Zn ‐doped Mn3O4 NPs display the largest energy difference betweenEf andEv, and simultaneously exhibit the low ROS generation ability and weak in vitro and in vivo oxidative injury. AbstractThe safety of metal oxide (MOx) nanoparticles (NPs) has been highly concerned because of their wide application and potential toxicological injury. The safe ‐by‐design strategy is usually developed to make safer MOx NPs based on regulation of their physicochemical properties. In the present study, ...
Source: Small - March 19, 2020 Category: Nanotechnology Authors: Yanlin Feng, Yun Chang, Keqiang Xu, Runxiao Zheng, Xiaqing Wu, Yan Cheng, Haiyuan Zhang Tags: Full Paper Source Type: research
Mycoremediation of vinasse by surface response methodology and preliminary studies in air-lift bioreactors.
va DP Abstract This work evaluated the degradation of sugarcane vinasse with the production of biomass by Pleurotus sajor-caju CCB020, considering the combination of temperature and pH effects, using surface response methodology (RSM). A 22 complete central factorial composite experiment was used to analyze the results. The optimum temperature and pH values were respectively 27 °C and 5.6 for maximum decolorization yield and 20 °C and 6.8 for maximum biomass production. In parallel, scale-up experiments under conditions of 30 °C and initial pH 5.0 were evaluated in two different air-lift...
Source: Chemosphere - March 19, 2020 Category: Chemistry Authors: Aragão MS, Menezes DB, Ramos LC, Oliveira HS, Bharagava RN, Romanholo Ferreira LF, Teixeira JA, Ruzene DS, Silva DP Tags: Chemosphere Source Type: research
Manganese-doped tremella-like nickel oxide as biomimetic sensors toward highly sensitive detection of glucose in human serum
Publication date: Available online 17 March 2020Source: Journal of Electroanalytical ChemistryAuthor(s): Jiechang Gao, Ting Meng, Shiyu Lu, Xiaoqing Ma, Yuhuan Zhang, Daoling Fu, Zhisong Lu, Chang Ming Li (Source: Journal of Electroanalytical Chemistry)
Source: Journal of Electroanalytical Chemistry - March 18, 2020 Category: Chemistry Source Type: research
Assessment of Rice Marketed in Iran with Emphasis on Toxic and Essential Elements; Effect of Different Cooking Methods.
Abstract Rice is one of the most valuable nutrients in the diet of most people in the world. The aim of this study was to evaluate the effect of various pre-cooking (washing, soaking) and cooking processes (traditional and rinse) of rice on the amount of toxic and essential elements in the various brands of rice in Iran and assessing human health risks from their carcinogenic and non-carcinogenic effects. For this purpose, totally, 144 sample sizes were examined from three brand (Iranian (n = 48), Pakistani (n = 48), and Indian (n = 48)) in order to the amount of toxic and e...
Source: Biological Trace Element Research - March 18, 2020 Category: Biology Authors: Shariatifar N, Rezaei M, Alizadeh Sani M, Alimohammadi M, Arabameri M Tags: Biol Trace Elem Res Source Type: research
Copper Catalysed Oxidative α-Sulfonylation of Branched Aldehydes Using the Acid Enhanced Reactivity of Manganese(IV) Oxide
Chem. Commun., 2020, Accepted Manuscript DOI: 10.1039/D0CC01576H, CommunicationJoe Higham, James A Bull The oxidative coupling of secondary aldehydes and sulfinate salts is achieved using copper catalysis to form a-sulfonyl aldehydes. The use of an acidic co-solvent is important to adjust the oxidation... The content of this RSS Feed (c) The Royal Society of Chemistry (Source: RSC - Chem. Commun. latest articles)
Source: RSC - Chem. Commun. latest articles - March 17, 2020 Category: Chemistry Authors: Joe Higham Source Type: research
Promoting hole transfer for photoelectrochemical water oxidation through a manganese cluster catalyst bioinspired by natural photosystem II
Chem. Commun., 2020, Advance Article DOI: 10.1039/D0CC00955E, CommunicationBin Gao, Tao Wang, Yang Li, Xiaoli Fan, Hao Gong, Cheng Jiang, Peng Li, Xianli Huang, Jianping He A Mn4O4–cubane molecule bioinspired by the natural photosystem II was used as a co-catalyst in photoelectrochemical water oxidation. 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 - Chem. Commun. latest articles)
Source: RSC - Chem. Commun. latest articles - March 17, 2020 Category: Chemistry Authors: Bin Gao Source Type: research
Promoting hole transfer for photoelectrochemical water oxidation through a manganese cluster catalyst bioinspired by natural photosystem II.
Abstract A BiVO4 photoanode was combined with bioinspired Mn4O4-cubane, which has a structure and composite similar to those of the oxygen-evolving complex (Mn4CaO5) in photosystem II. The hybrid photoanode exhibited a lower onset potential and higher photocurrent than the pristine photoanode because of the faster kinetics of the reaction and reduced rate of recombination of the carriers. PMID: 32182318 [PubMed - as supplied by publisher] (Source: Chemical Communications)
Source: Chemical Communications - March 17, 2020 Category: Chemistry Authors: Gao B, Wang T, Li Y, Fan X, Gong H, Jiang C, Li P, Huang X, He J Tags: Chem Commun (Camb) Source Type: research
Selenium prevents lithium accumulation and does not disturb basic microelement homeostasis in liver and kidney of rats exposed to lithium.
CONCLUSIONS: The obtained results suggest that selenium could be regarded as an adjuvant into lithium therapy. However, considering the limitations of the present study (the short duration, using only one dose and form of selenium) the continuation of the research seems to be necessary to clarify the influence of selenium supplementation on basic microelements and lithium accumulation in organs during lithium exposure. PMID: 32208591 [PubMed - in process] (Source: Annals of Agricultural and Environmental Medicine : AAEM)
Source: Annals of Agricultural and Environmental Medicine : AAEM - March 17, 2020 Category: Environmental Health Authors: Kiełczykowska M, Polz-Dacewicz M, Kopciał E, Mitrus O, Kurzepa J, Marzec Z, Musik I Tags: Ann Agric Environ Med Source Type: research
Trace metals geochemistry for health assessment coupled with adsorption remediation method for the groundwater of Lorong Serai 4, Hulu Langat, west coast of Peninsular Malaysia
AbstractThe research study was carried out to evaluate trace metals (Pb, Cd, Se, Al, Mn, Cu, Zn, Fe, As, Ni, Cr, and Ag) concentrations in groundwater of Lorong Serai 4, Hulu Langat, Selangor, Malaysia. Additionally, the research study focused on determining non-carcinogenic and carcinogenic health risks, sources of the contaminants, and effective remediation methods. The results show that the concentration levels of Pb, Cd, Se, Al, Cu, Zn, Ni, Cr, and Ag are lower than their corresponding permissible limits, while Fe, Mn, and As concentrations exceed their acceptable limit. The hazard index of the groundwater in the area ...
Source: Environmental Geochemistry and Health - March 16, 2020 Category: Environmental Health Source Type: research
Advanced biological sequential treatment of mature landfill leachate using aerobic activated sludge SBR and fungal bioreactor
This study utilizedPenicillium spp. to treat mature landfill leachate (MLL) in a continuous bioreactor and batch experimental tests under non-sterile conditions. MLL characteristics such as chemical oxygen demand (COD), soluble COD (sCOD), total carbon (TC), total organic carbon (TOC), and color removal efficiency were determined. The lignocellulosic enzymatic activity of laccase (Lac), lignin-peroxidase (LiP), and manganese-peroxidase (MnP) was also determined. The batch experimental test was carried out with raw and pretreated MLL containing the initial NH4+–N concentrations of 0, 105, 352, and 914 mg/L. A max...
Source: Journal of Environmental Health Science and Engineering - March 16, 2020 Category: Environmental Health Source Type: research
The role of diffusion tractography in refining glial tumor resection
AbstractPrimary brain tumors are notoriously hard to resect surgically. Due to their infiltrative nature, finding the optimal resection boundary without damaging healthy tissue can be challenging. One potential tool to help make this decision is diffusion-weighted magnetic resonance imaging (dMRI) tractography. dMRI exploits the diffusion of water molecule along axons to generate a 3D modelization of the white matter bundles in the brain. This feature is particularly useful to visualize how a tumor affects its surrounding white matter and plan a surgical path. This paper reviews the different ways in which dMRI can be used...
Source: Anatomy and Embryology - March 16, 2020 Category: Anatomy Source Type: research
Interactions between iron and manganese in neurotoxicity.
eth J Abstract The essential and naturally occurring transition metal manganese (Mn) is present in the soil, water, air, and various foods. Manganese can accumulate in the brain if the Mn intake or exposure is excessive and this can result in neurotoxic effects. Manganese is important for the proper activation of different metabolic and antioxidant enzymes. There are numerous Mn importers and exporters. However, the exact transport mechanism for Mn is not fully understood. On the other hand, iron (Fe) is another well-known essential metal, which has redox activity in addition to chemical characteristics resembling...
Source: Archives of Toxicology - March 16, 2020 Category: Toxicology Authors: Bjørklund G, Dadar M, Peana M, Rahaman MS, Aaseth J Tags: Arch Toxicol Source Type: research
The role of diffusion tractography in refining glial tumor resection.
Abstract Primary brain tumors are notoriously hard to resect surgically. Due to their infiltrative nature, finding the optimal resection boundary without damaging healthy tissue can be challenging. One potential tool to help make this decision is diffusion-weighted magnetic resonance imaging (dMRI) tractography. dMRI exploits the diffusion of water molecule along axons to generate a 3D modelization of the white matter bundles in the brain. This feature is particularly useful to visualize how a tumor affects its surrounding white matter and plan a surgical path. This paper reviews the different ways in which dMRI c...
Source: Brain Structure and Function - March 16, 2020 Category: Neuroscience Authors: Vanderweyen DC, Theaud G, Sidhu J, Rheault F, Sarubbo S, Descoteaux M, Fortin D Tags: Brain Struct Funct Source Type: research
Mutated ATP10B increases Parkinson ’s disease risk by compromising lysosomal glucosylceramide export
AbstractParkinson ’s disease (PD) is a progressive neurodegenerative brain disease presenting with a variety of motor and non-motor symptoms, loss of midbrain dopaminergic neurons in the substantia nigra pars compacta and the occurrence of α-synuclein-positive Lewy bodies in surviving neurons. Here, we performed w hole exome sequencing in 52 early-onset PD patients and identified 3 carriers of compound heterozygous mutations in the ATP10B P4-type ATPase gene. Genetic screening of a Belgian PD and dementia with Lewy bodies (DLB) cohort identified 4 additional compound heterozygous mutation carriers (6/617 PD p a...
Source: Acta Neuropathologica - March 14, 2020 Category: Neurology Source Type: research
Evaluation of in vivo anti-inflammatory and anti-angiogenic attributes of methanolic extract of Launaea spinosa
This study was conducted to evaluate anti-inflammatory and anti-angiogenic activities of methanol extract ofLaunaea spinosa. Extraction was performed by maceration and the resultant green coloured extract was labelled asLs.Me. Solubility analysis showed thatLs.Me was miscible with distilled water, normal saline, ethanol and methanol. Metal analysis following acid digestion method exhibited the presence of copper, magnesium, manganese, iron, zinc and calcium. Phytochemical analysis confirmed the presence of different classes of secondary metabolites inLs.Me. HPLC analysis showed the presence of quercetin, gallic acid, caffe...
Source: Inflammopharmacology - March 14, 2020 Category: Drugs & Pharmacology Source Type: research
Synchronized enhancement of thermoelectric properties of higher manganese silicide by introducing Fe and Co nanoparticles
Publication date: Available online 13 March 2020Source: Nano EnergyAuthor(s): Gwansik Kim, Hyun-Sik Kim, Ho Seong Lee, Jeongmin Kim, Kyu Hyoung Lee, Jong Wook Roh, Wooyoung Lee (Source: Nano Energy)
Source: Nano Energy - March 13, 2020 Category: Nanotechnology Source Type: research
Manganese oxide functionalized silk fibers for enzyme mimics application
Publication date: Available online 12 March 2020Source: Reactive and Functional PolymersAuthor(s): Manish Singh, Estera S. Dey, Cedric Dicko (Source: Reactive and Functional Polymers)
Source: Reactive and Functional Polymers - March 13, 2020 Category: Chemistry Source Type: research