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https://www.readbyqxmd.com/read/28330247/production-of-glucosinolates-phenolic-compounds-and-associated-gene-expression-profiles-of-hairy-root-cultures-in-turnip-brassica-rapa-ssp-rapa
#1
Ill-Min Chung, Kaliyaperumal Rekha, Govindasamy Rajakumar, Muthu Thiruvengadam
Turnip (Brassica rapa ssp. rapa) is an important vegetable crop producing glucosinolates (GSLs) and phenolic compounds. The GSLs, phenolic compound contents and transcript levels in hairy root cultures, as well as their antioxidant, antimicrobial and anticancer activity were studied in turnip. Transgenic hairy root lines were confirmed by polymerase chain reaction (PCR) and reverse transcription-PCR. GSLs levels (glucoallysin, glucobrassicanapin, gluconasturtiin, glucobrassicin, 4-methoxyglucobrassicin, neoglucobrassicin and 4-hydroxyglucobrassicin) and their gene expression levels (BrMYB28, BrMYB29, BrMYB34, BrMYB51, BrMYB122, CYP79 and CYP83) significantly increased in hairy roots compared with that in non-transformed roots...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330171/purification-and-characterization-of-endo-%C3%AE-1-4-d-glucanase-from-trichoderma-harzianum-strain-hzn11-and-its-application-in-production-of-bioethanol-from-sweet-sorghum-bagasse
#2
Zabin K Bagewadi, Sikandar I Mulla, Harichandra Z Ninnekar
An acidophilic-solvent-thermostable endo β-1,4-D-glucanase produced from a potential Trichoderma harzianum strain HZN11 was purified to homogeneity by DEAE-Sepharose and Sephadex G-100 chromatography with 33.12 fold purification with specific activity of 66.25 U/mg and molecular mass of ~55 kDa. The optimum temperature and pH were 60 °C and 5.5 retaining 76 and 85 % of activity after 3 h, respectively. It showed stability between pH 4.5-6.0 and temperature between 50-70 °C indicating thermostability...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328218/functionalized-lanthanide-iii-complexes-constructed-from-azobenzene-derivative-and-%C3%AE-diketone-ligands-luminescent-magnetic-and-reversible-trans-to-cis-photoisomerization-properties
#3
Li-Rong Lin, Hui-Hui Tang, Yun-Guang Wang, Xuan Wang, Xue-Ming Fang, Li-Hua Ma
The coordination ability of ligands functionalized by azobenzene was manipulated, and two novel chelating ligands, (E)-4-(phenyldiazenyl)-N,N-bis(pyridin-2-ylmethyl) benzohydrazide (C25H22N6O, PBPM) and (E)-4-((4-(dimethylamino)phenyl)diazenyl)-N,N-bis(pyridin-2-ylmethyl) benzohydrazide (C27H27N7O, dmPBPM), were synthesized. The ligands can offer four coordinating atoms (one oxygen and three nitrogens) to act as tetradendate ligands, together with the two β-diketonates (4,4,4-trifluoro-1-phenylbutane-1,3-dionate, tfd), and the trifluoroacetate anion presented as a ligand and a counterion to form the quaternary units with lanthanide(III) ions (La, Eu, and Gd), [Ln(tfd)2(PBPM)(CF3CO2)] (LnC47H34F9N6O7) and [Ln(tfd)2(dmPBPM)(CF3CO2)] (LnC49H39F9N7O7), where the lanthanide(III) ions are nine coordinated with N3O6 donor sets...
March 22, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28328161/synthesis-in-vitro-evaluation-and-68-ga-radiolabeling-of-cdp1-towards-pet-ct-imaging-of-bacterial-infection
#4
Jyotibon Dutta, Sooraj Baijnath, Anou M Somboro, Savania Nagiah, Fernando Albericio, Beatriz G de la Torre, Biljana Marjanovic-Painter, Jan Rijn Zeevaart, Mike Sathekge, Hendrik G Kruger, Anil Chuturgoon, Tricia Naicker, Thomas Ebenhan, Thavendran Govender
Bacterial infections are a major concern in the human health sector due to poor diagnosis and development of multi drug resistant strains. PET/CT provides a means for the noninvasive detection and localization of the infectious foci; however, the radiotracers available are either cumbersome to prepare or their exact contribution towards the imaging is not yet established. Human antimicrobial peptides are of interest for development as PET radiotracers as they are an integral component of the immune system, non-immunogenic towards the recipient and show selectivity towards pathogens such as bacteria...
March 22, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28327749/mono-and-polynuclear-ag-i-complexes-of-n-functionalized-bis-diphenylphosphino-amine-dppa-type-ligands-synthesis-solid-state-structures-and-reactivity
#5
Alessio Ghisolfi, Christophe Fliedel, Pierre de Frémont, Pierre Braunstein
The reactivity of the N-functionalized DPPA-type ligands (Ph2P)2N(p-Z)C6H4 [Z = H (1a), SMe (1b), OMe (1c)] with AgBF4 was investigated and revealed an unexpected influence of the para substituent Z of the N-aryl ligand. In acetone, the mononuclear bis-chelated [Ag{(1a-1c)-P,P}2]BF4 (2a·BF4-2c·BF4) and dinuclear bridged [Ag2{μ2-(1a-1c)-P,P}2](BF4)2 [3a·(BF4)2-3c·(BF4)2] complexes were obtained with a 1 : 2 and 1 : 1 AgBF4/ligand molar ratio, respectively. While the molecular structures of 2a·BF4 and 2b·BF4 determined in the solid-state by X-ray diffraction revealed their mononuclear nature and the absence of cation/anion interaction, complexes 3b·(BF4)2 and 3c·(BF4)2 form 2D coordination polymers through intermolecular Ag-S or Ag-O interactions, respectively, involving the N-function of the respective DPPA-type ligand, and display direct interactions between one BF4 anion and both Ag(i) cations...
March 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28327344/direct-activation-of-ca-2-and-voltage-gated-potassium-channels-of-large-conductance-by-anandamide-in-endothelial-cells-does-not-support-the-presence-of-endothelial-atypical-cannabinoid-receptor
#6
Alexander I Bondarenko, Olga Panasiuk, Iryna Okhai, Fabrizio Montecucco, Karim J Brandt, Francois Mach
Endocannabinoid anandamide induces endothelium-dependent relaxation commonly attributed to stimulation of the G-protein coupled endothelial anandamide receptor. The study addressed the receptor-independent effect of anandamide on large conductance Ca(2+)-dependent K(+) channels expressed in endothelial cell line EA.hy926. Under resting conditions, 10µM anandamide did not significantly influence the resting membrane potential. In a Ca(2+)-free solution the cells were depolarized by ~10 mV. Further administration of 10µM anandamide hyperpolarized the cells by ~8 mV...
March 19, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28327292/edta-application-on-agricultural-soils-affects-microelement-uptake-of-plants
#7
Elke Bloem, Silvia Haneklaus, Robert Haensch, Ewald Schnug
Chelates such as ethylenediaminetetraacetic acid (EDTA) enter soils via various sources but their effect on agricultural crops is mostly unknown. Sources of EDTA include industry, households, sewage water and agricultural practices. In a field experiment EDTA was applied in its free form at different rates (0, 150, 550, 1050kgha(-1)) to study its translocation in the soil profile and to evaluate its effect on yield and mineral composition of the cultivated crop, both in the year of application (oilseed rape) and in the following year (winter wheat)...
January 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28327117/preliminary-evaluation-of-anti-tuberculosis-potential-of-siderophores-against-drug-resistant-mycobacterium-tuberculosis-by-mycobacteria-growth-indicator-tube-drug-sensitivity-test
#8
Karuna Gokarn, Ramprasad B Pal
BACKGROUND: Alternative treatment strategies have become essential in overcoming the problem of drug-resistant Mycobacterium tuberculosis (Mtb). In this preliminary in vitro study, the anti-tuberculosis (anti-TB) activity of exogenous iron chelators (xenosiderophores) such as Exochelin-MS (Exo-MS) and Deferoxamine-B (DFO-B) was evaluated against ten multi-drug-resistant (MDR) and seven pyrazinamide-resistant (PZA (R) ) Mtb isolates. METHODS: Mycobacteria Growth Indicator Tube-Drug Susceptibility Test was used to assess the anti-TB effect of Exo-MS or DFO-B individually and their combinations with isoniazid (INH), rifampicin (RIF) and pyrazinamide (PZA)...
March 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28325940/one-pot-synthesis-of-four-coordinate-boron-iii-complexes-by-the-ligand-promoted-organic-group-migration-between-boronic-acids
#9
Venkata S Sadu, Hye-Rin Bin, Do-Min Lee, Kee-In Lee
Multidisciplinary applications of four-coordinate boron(III) complexes make them very attractive and challenging research field in chemistry, biology and material sciences. The dual role played by boron atom in stabilising the chelate ligand and enhancing the π-conjugation makes them very useful as luminescent materials for organic electronics and photonics, and sensing and imaging probes for biomedical purposes. The conventional methods involve the use of diarylborinic acids or anhydrides and triaryl boranes, which are made from organometallic reagents...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28325708/use-of-glucose-as-reductant-to-recover-co-from-spent-lithium-ions-batteries
#10
Qi Meng, Yingjie Zhang, Peng Dong
A hydrometallurgical leaching process has been developed for recovery of Co and Li from cathode material (LiCoO2) collected from spent LIBs using a mix solution of glucose and phosphoric acid. The spent LiCoO2 before and after leaching process are analyzed by scanning electron microscopy. A leaching rate of about 98% Co and nearly 100% Li is presented with 1.5mol/L phosphoric acid and 0.02mol/L glucose at 80°C in about 2h. During leaching process, glucose was oxidized into monocarboxylic acid with reduction of Co(III) to Co(II)...
March 18, 2017: Waste Management
https://www.readbyqxmd.com/read/28325093/differences-in-intracellular-mobile-zinc-levels-affect-susceptibility-to-plasma-activated-medium-induced-cytotoxicity
#11
Hirokazu Hara, Sayako Sueyoshi, Miko Taniguchi, Tetsuro Kamiya, Tetsuo Adachi
There is growing evidence that plasma-activated medium (PAM), which is prepared by non-thermal plasma (NTP) irradiation of cell-free medium, is a beneficial tool for cancer therapy. PAM has been reported to preferentially kill cancer cells; however, its mechanism is not fully understood. Since PAM contains reactive oxygen species (ROS) and reactive nitrogen species, the anti-cancer effects of PAM are thought to be attributed to oxidative stress induced by these reactive molecules. Oxidative stress has been shown to release zinc (Zn(2+)) from intracellular Zn(2+) stores and provoke Zn(2+)-dependent cell death...
March 21, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28323414/design-of-insulin-loaded-nanoparticles-enabled-by-multistep-control-of-nanoprecipitation-and-zinc-chelation
#12
Sunandini Chopra, Nicolas Bertrand, Jong-Min Lim, Amy Wang, Omid C Farokhzad, Rohit Karnik
Nanoparticle (NP) carriers provide new opportunities for controlled delivery of drugs, and have potential to address challenges such as effective oral delivery of insulin. However, due to the difficulty of efficiently loading insulin and other proteins inside polymeric NPs, their use has been mostly restricted to the encapsulation of small molecules. To better understand the processes involved in encapsulation of proteins in NPs, we study how buffer conditions, ionic chelation, and preparation methods influence insulin loading in poly(lactic-co-glycolic acid)-b-poly(ethylene glycol) (PLGA-PEG) NPs...
March 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28323401/zinc-and-copper-effects-on-stability-of-tubulin-and-actin-networks-in-dendrites-and-spines-of-hippocampal-neurons
#13
Laura Perrin, Stephane Roudeau, Asuncion Carmona, Florelle Domart, Jennifer D Petersen, Sylvain Bohic, Yang Yang, Peter Cloetens, Richard Ortega
Zinc and copper ions can modulate the activity of glutamate-receptors. However, labile zinc and copper ions likely represent only the tip of the iceberg and other neuronal functions are suspected for these metals in their bound state. We performed synchrotron X-ray fluorescence imaging with 30 nm resolution to image total biometals in dendrites and spines from hippocampal neurons. We found that zinc is distributed all along the dendrites while copper is mainly pinpointed within the spines. In spines, zinc content is higher within the spine head while copper is higher within the spine neck...
March 21, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28323132/direct-participation-of-dna-in-the-formation-of-singlet-oxygen-and-base-damage-under-uva-irradiation
#14
Teiti Yagura, André Passaglia Schuch, Camila Carrião Machado Garcia, Clarissa Ribeiro Reily Rocha, Natália Cestari Moreno, José Pedro Friedmann Angeli, Davi Mendes, Divinomar Severino, Angelica Bianchini Sanchez, Paolo Di Mascio, Marisa Helena Gennari de Medeiros, Carlos Frederico Martins Menck
UVA light is hardly absorbed by the DNA molecule, but recent works point to a direct mechanism of DNA lesion by these wavelengths. UVA light also excite endogenous chromophores, which causes DNA damage through ROS. In this study, DNA samples were irradiated with UVA light in different conditions to investigate possible mechanisms involved in the induction of DNA damage. The different types of DNA lesions formed after irradiation were determined through the use of endonucleases, which recognize and cleave sites containing oxidized bases and cyclobutane pyrimidine dimers (CPDs), as well as through antibody recognition...
March 17, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28322975/a-polymeric-micelle-magnetic-resonance-imaging-mri-contrast-agent-reveals-blood-brain-barrier-bbb-permeability-for-macromolecules-in-cerebral-ischemia-reperfusion-injury
#15
Kouichi Shiraishi, Zuojun Wang, Daisuke Kokuryo, Ichio Aoki, Masayuki Yokoyama
Blood-brain barrier (BBB) opening is a key phenomenon for understanding ischemia-reperfusion injuries that are directly linked to hemorrhagic transformation. The recombinant human tissue-type plasminogen activator (rtPA) increases the risk of symptomatic intracranial hemorrhages. Recent imaging technologies have advanced our understanding of pathological BBB disorders; however, an ongoing challenge in the pre-"rtPA treatment" stage is the task of developing a rigorous method for hemorrhage-risk assessments...
March 16, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28322305/tuning-of-exchange-coupling-and-switchable-magnetization-dynamics-by-displacing-the-bridging-ligands-observed-in-two-dimeric-manganese-iii-compounds
#16
Xiang-Yu Liu, Pei-Pei Cen, Li-Zhou Wu, Fei-Fei Li, Wei-Ming Song, Gang Xie, San-Ping Chen
Two Mn(III)-based dimers, [Mn2(bpad)2(CH3O)4]n (1) and [Mn2(bpad)2(pa)2]n·2H2O (2) (Hbpad = N(3)-benzoylpyridine-2-carboxamidrazone, H2pa = phthalic acid), have been assembled from a tridentate Schiff-base chelator and various anionic coligands. Noteworthily, compound 1 could be identified as a reaction precursor to transform to 2 in the presence of phthalic acid, resulting in a rarely structural conversion process in which the bridges between intradimer Mn(III) ions alter from methanol oxygen atom with μ2-O mode in 1 (Mn Mn distance of 3...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28322293/tea-polyphenols-inhibit-the-growth-and-virulence-properties-of-fusobacterium-nucleatum
#17
Amel Ben Lagha, Bruno Haas, Daniel Grenier
Fusobacterium nucleatum plays a key role in creating the pathogenic subgingival biofilm that initiates destructive periodontitis. It is also a common resident of the human gastrointestinal tract and has been associated with inflammatory bowel disease. The aim of the present study was to investigate the effects of green and black tea extracts as well as two of their bioactive components, EGCG and theaflavins, on the growth and virulence properties of F. nucleatum. The tea extracts and components displayed various degrees of antibacterial activity that may involve damage to the bacterial cell membrane and the chelation of iron...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28322147/molecular-characterization-and-antioxidant-potential-of-three-wild-culinary-medicinal-mushrooms-from-tripura-northeast-india
#18
Aparajita Roy Das, Madhusmita Borthakur, Ajay Krishna Saha, Santa Ram Joshi, Panna Das
The aim of this study was to characterize 3 wild culinary-medicinal mushrooms using molecular tools and to analyze their antioxidant activity. Antioxidant properties were studied by evaluating free radical scavenging, reducing power, and chelating effect. The mushrooms were identified as Lentinus squarrosulus, L. tuber-regium, and Macrocybe gigantean by amplifying internal transcribed spacer regions of ribosomal DNA. The results demonstrated that the methanolic extract of M. gigantean has the highest free radical scavenging effect and chelating effect, whereas the methanolic extract of L...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28322057/%C3%AE-dicationic-chelating-phosphines-synthesis-and-application-to-the-hydroarylation-of-dienes
#19
Lianghu Gu, Lawrence M Wolf, Adam Zieliński, Walter Thiel, Manuel Alcarazo
A series of new P^P-chelating ligands constituted by a dicationic -[P(H2Im)2](+2) unit (H2Im = 1,3-dimethyl-4,5-dihydroimidazol-2-ylidene) and a -PPh2 group connected through structurally different backbones have been synthesized. Evaluation of their reactivity toward different metal centers provides evidence that the dicationic fragment, otherwise reluctant to coordinate metals, readily participates in the formation of chelates when embedded into such a scaffold. Moreover, it significantly enhances the Lewis acidity of the metals to which it coordinates...
March 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28321531/bone-quality-in-beta-thalassemia-intermedia-relationships-with-bone-quantity-and-endocrine-and-hematologic-variables
#20
Marina Baldini, A Marcon, F M Ulivieri, S Seghezzi, R Cassin, C Messina, M D Cappellini, G Graziadei
We report the first evaluation of bone quality in 70 thalassemia intermedia (TI) patients (37 males, 33 females, age 41 ± 12 years). Thirty-three patients (47%) had been transfused, 34 (49%) had been splenectomized, 39 (56%) were on iron chelation therapy, and 11 (16%) were on hydroxyurea. Mean hemoglobin was 9.2 ± 1.5 g/dl, median ferritin 537 ng/dl (range 14-4893), and mean liver iron concentration 7.6 ± 6.4 mg Fe/g dw. Fifteen patients (21%) had endocrinopathies, and 29 (41%) had vitamin D deficiency...
March 20, 2017: Annals of Hematology
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