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https://www.readbyqxmd.com/read/29791142/reassessment-of-the-transport-mechanism-of-the-human-zinc-transporter-slc39a2
#1
Marie Christine Franz, Jonai Pujol-Gimenez, Nicolas Montalbetti, Miguel Fernandez-Tenorio, Timothy R DeGrado, Ernst Niggli, Michael F Romero, Matthias A Hediger
The human zinc transporter SLC39A2, also known as ZIP2, was shown to mediate zinc transport that could be inhibited at pH values below 7.0 and stimulated by HCO3-, suggesting a Zn2+/HCO3- cotransport mechanism (1). In contrast, recent experiments in our laboratory indicated that the functional activity of ZIP2 increases at acidic pH (2). The present study was therefore designed to reexamine the findings on the pH-dependence and to extend the functional characterization of ZIP2. Our current results show that ZIP2-mediated transport is modulated by extracellular pH, but independent of the H+ driving force...
May 23, 2018: Biochemistry
https://www.readbyqxmd.com/read/29786574/the-increase-of-efficiency-of-treatment-in-patients-with-non-stable-angina-pectoris-with-use-of-nitrogen-oxide-donator-wzrost-skuteczno%C3%A5-ci-leczenia-chorych-z-niestabiln%C3%A4-d%C3%A5-awic%C3%A4-piersiow%C3%A4-przy-pomocy-donor%C3%A3-w-tlenku-azotu
#2
Yevheniya Kh Zaremba, Olha V Zaremba, Nazar R Fedchyshyn, Victoria I Tkachenko, Oleh O Kapustynskyy
OBJECTIVE: Introction: One of the leading pathogenetic factors of CVD is a violation of the function of the endothelium of the vessels, which leads to endothelial dysfunction. The aіm: Increasing the efficiency of treatment of patients with NSAP based on the study of the dynamics of clinical picture, blood parametres, CRP, indices of endothelium dependent vasodilatation of the brachial artery with the use of arginine hydrochloride. PATIENTS AND METHODS: Materials and methods: The 45 patients with non-stable angina pectoris (NSAP), who were in inpatient treatment in the cardiological department of the Clinical city hospital of emergency care in Lviv, were examined...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29785588/sam68-promotes-invasion-migration-and-proliferation-of-fibroblast-like-synoviocytes-by-enhancing-the-nf-%C3%AE%C2%BAb-p65-pathway-in-rheumatoid-arthritis
#3
Weiwei Sun, Rongqin Qin, Rui Wang, Dazhi Ding, Zhaohui Yu, Yuxi Liu, Ruilong Hong, Zhen Cheng, Youhua Wang
Src-associated substrate during mitosis of 68 KDa (Sam68), also known as KH domain containing, RNA binding, signal transduction associated 1 (KHDRBS1), is the prototypic member of the signal transduction activator of RNA (STAR) family of RNA-binding proteins. Previous studies have indicated that Sam68 regulates nuclear transcription factor kappa B (NF-κB) to mediate inflammation. In this study, we analyzed the effect and possible mechanisms of Sam68 in rheumatoid arthritis (RA). By western blot analysis and immunohistochemistry, we found that the expression of Sam68 in synovial tissue of RA patients was increased compared with the control group...
May 21, 2018: Inflammation
https://www.readbyqxmd.com/read/29776101/solvation-suppression-of-ion-recombination-in-gas-discharge-afterglow
#4
R Kh Amirov, A V Lankin, G E Norman
An effect which suppresses recombination in ion plasmas is considered both theoretically and experimentally. Experimental results are presented for the ion recombination rate in fluorine plasma, which are obtained from data for the gas discharge afterglow. To interpret them, a suppression factor is considered: ion solvation in weakly ionized plasma. It is shown that the recombination process has a two-stage character with the formation of intermediate metastable ion pairs. The pairs consist of negative and positive ion-molecular clusters...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29773168/m%C3%A3-ssbauer-spectroscopic-study-of-transformations-of-iron-species-by-the-cyanobacterium-arthrospira-platensis-formerly-spirulina-platensis
#5
Yurii D Perfiliev, Alexandr Kh Tambiev, Maxim A Konnychev, Anatoly V Skalny, Elena S Lobakova, Mikhail P Kirpichnikov
In the present paper, Mössbauer spectroscopic studies of dry biomass samples of the cyanobacterium Arthrospira platensis (formerly known as Spirulina platensis) were performed with regard to metabolic iron accumulation. 57 Fe Mössbauer parameters of iron in the biomass correspond to ferrihydrite. Spectra of iron hydroxides in A. platensis biomass differ from those of iron complexes with ethylenediaminetetraacetic acid injected to Zarrouk culture medium. The limit of saturation of A. platensis trichomes with iron in the form of ferrihydrite was found to be 5 μg/ml (0...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29772502/effect-of-temperature-on-kinetics-of-biogas-production-from-macroalgae
#6
Edward Membere, Paul Sallis
An assessment was carried out on the effect of temperature on the anaerobic digestion of Laminaria digitata biomass, in batch reactors (25, 35, 45 and 55 °C) with a hydraulic retention time of 40 days. The first order, modified Gompertz and logistics models were used to obtain the kinetic parameters of the biogas production process. Results indicate the chemical composition of the algae substrate could be written as C316 H613 O289 N13 S1 , with a theoretical methane yield of 336 ± 0.86 L CH4  kg VS-1 ...
May 8, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29769611/highly-reproducible-alkali-metal-doping-system-for-organic-crystals-through-enhanced-diffusion-of-alkali-metal-by-secondary-thermal-activation
#7
Jinho Lee, Chibeom Park, Intek Song, Jin Young Koo, Taekyung Yoon, Jun Sung Kim, Hee Cheul Choi
In this paper, we report an efficient alkali metal doping system for organic single crystals. Our system employs an enhanced diffusion method for the introduction of alkali metal into organic single crystals by controlling the sample temperature to induce secondary thermal activation. Using this system, we achieved intercalation of potassium into picene single crystals with closed packed crystal structures. Using optical microscopy and Raman spectroscopy, we confirmed that the resulting samples were uniformly doped and became K2 picene single crystal, while only parts of the crystal are doped and transformed into K2 picene without secondary thermal activation...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29765368/killing-effects-of-an-isolated-serratia-marcescens-kh-001-on-diaphorina-citri-via-lowering-the-endosymbiont-numbers
#8
Wei Hu, Fan Kuang, Zhanjun Lu, Ning Zhang, Tingtao Chen
Huanglongbing (HLB) is the most devastating citrus disease worldwide, and suppression of the Asian citrus psyllid ( Diaphorina citri ) is regarded as an effective method to inhibit the spread of HLB. In this study, we isolated a strain named as Serratia marcescens KH-001 from D. citri nymphs suffering from disease, and evaluated its killing effect on D. citri via toxicity test and effect on microbial community in D. citri using high-throughput sequencing. Our results indicated that S. marcescens KH-001 could effectively kill 83% of D...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29764143/stark-effect-of-kramers-henneberger-atoms
#9
Min Li, Qi Wei
The Electric Stark effect of a Kramers-Henneberger (KH) state of hydrogen atoms in both linearly and circularly polarized laser fields is studied. For the ground KH state of H atoms with a small quiver amplitude, the quadratic Stark effect is observed. For a large quiver amplitude, the Stark effect is quadratic only in a weak electric field and quickly changes to linear as the electric field increases. The atomic structure of the KH state is very sensitive to the electric field and can be easily polarized. The huge polarizability and induced dipole moment are comparable to those of Rydberg atoms...
May 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29763662/mt-rps3-is-an-ancient-gene-which-provides-insight-into-the-evolution-of-fungal-mitochondrial-genomes
#10
Artemis G Korovesi, Maria Ntertilis, Vassili N Kouvelis
The nuclear ribosomal protein S3 (Rps3) is implicated in the assembly of the ribosomal small subunit. Fungi and plants present a gene copy in their mitochondrial (mt) genomes. An analysis of 303 complete fungal mt genomes showed that, when rps3 is found, it is either a free-standing gene or an anchored gene within the omega intron of the rnl gene. Early divergent fungi, Basidiomycota and all yeasts but the CTG group belong to the first case, and Pezizomycotina to the second. Its position, size and genetic code employed are conserved within species of the same Order...
May 12, 2018: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29746106/improved-efficacy-of-synthesizing-m-iii-labeled-dota-complexes-in-binary-mixtures-of-water-and-organic-solvents-a-combined-radio-and-physicochemical-study
#11
Marylaine Pérez-Malo, Gergely Szabó, Elisabeth Eppard, Adrienn Vagner, Ernő Brücher, Imre Tóth, Alessandro Maiocchi, Eul Hyun Suh, Zoltán Kovács, Zsolt Baranyai, Frank Rösch
Typically, the synthesis of radiometal-based radiopharmaceuticals is performed in buffered aqueous solutions. We found that the presence of organic solvents like ethanol increased the radiolabeling yields of [68 Ga]Ga-DOTA (DOTA = 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacatic acid). In the present study, the effect of organic cosolvents [ethanol (EtOH), isopropyl alcohol, and acetonitrile] on the radiolabeling yields of the macrocyclic chelator DOTA with several trivalent radiometals (gallium-68, scandium-44, and lutetium-177) was systematically investigated...
May 10, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29744462/polyethylene-glycol-functionalized-carbon-nanotubes-gelatin-chitosan-nanocomposite-an-approach-for-significant-drug-release
#12
Sadia Sharmeen, A F M Mustafizur Rahman, Mostakima M Lubna, Kh Samaher Salem, Rafiqul Islam, Mubarak A Khan
This research work blooms the new idea of developing a safe and controlled drug releasing matrix using multi-walled carbon nanotubes (MWCNTs). In aqueous solution, uniform and highly stable dispersion of MWCNTs was obtained after secondary functionalization with polyethylene glycol (PEG) which was studied by Fourier transmission infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). Solution casting method was used to prepare MWCNTs/gelatin-chitosan nanocomposite films and the effect of MWCNTs on physico-mechanical, thermal and water uptake properties of the nanocomposites were evaluated...
September 2018: Bioactive Materials
https://www.readbyqxmd.com/read/29735546/long-noncoding-rna-ab074169-inhibits-cell-proliferation-via-modulation-of-khsrp-mediated-p21-expression-in-papillary-thyroid-carcinoma
#13
Qiheng Gou, Linbo Gao, Xinwen Nie, Wenchen Pu, Jingqiang Zhu, Yichao Wang, Xuesha Liu, Shuangyan Tan, Jian-Kang Zhou, Yanqiu Gong, Juan He, Ke Wu, Yuxin Xie, Wanjun Zhao, Lunzhi Dai, Lunxu Liu, Rong Xiang, Yu-Quan Wei, Lin Zhang, Yong Peng
Long noncoding RNAs (lncRNAs) are emerging as a novel class of regulators in gene expression associated with tumorigenesis. However, the role of lncRNAs in papillary thyroid carcinoma (PTC) is poorly understood. Here we conducted global lncRNA profiling and identified lncRNA AB074169 (lncAB) as significantly downregulated in PTC. Decreased expression of lncAB in PTC was caused by CpG hypermethylation within its gene promoter. Functional studies showed that lncAB overexpression led to cell cycle arrest and tumor growth inhibition in vitro and in vivo, whereas lncAB knockdown promoted cell proliferation...
May 7, 2018: Cancer Research
https://www.readbyqxmd.com/read/29728998/kh-type-splicing-regulatory-protein-is-regulated-by-nuclear-factor-%C3%AE%C2%BAb-signaling-to-mediate-innate-immunity-in-caco-2-cells-infected-by-salmonella-enteritidis
#14
Yuanyang Nie, Mei Cao, Daoyan Wu, Ningzhe Li, Jingshan Peng, Sijun Yi, Xiaofan Yang, Mao Zhang, Guoku Hu, Jian Zhao
Salmonella enteritidis infection occurs in enterogenous diseases, such as gastroenteritis and parenteral focal infection, which often involve inflammation of intestinal epithelial cells. The nuclear factor kappa B (NF-κB) pathway participates in the innate immune response to many gram-negative pathogenic bacteria and initiates inflammation in epithelial cells. KH-type splicing regulatory protein (KSRP) is a multi-domain RNA-binding protein that recruits the exosome-containing mRNA degradation complex to mRNAs coding for inflammatory response factors...
May 4, 2018: Folia Microbiologica
https://www.readbyqxmd.com/read/29725251/glucagon-like-peptide-1-receptor-agonist-and-glucagon-increase-glucose-stimulated-insulin-secretion-in-beta-cells-via-distinct-adenylyl-cyclases
#15
Young-Sun Lee, Hee-Sook Jun
Diabetes mellitus is a chronic disease in which the pancreas no longer produces enough insulin. Pancreatic alpha cell mass increases in response to insufficient insulin secretion. However, the reason for this increase is not clear. It is possible that the increased alpha-cells may stimulate compensatory insulin release in response to the insufficient insulin such as insulin resistance. In this study, we investigated whether glucagon and glucagon-like peptide-1 (GLP-1), hormones produced by alpha cells, contribute to insulin secretion in INS-1 cells, a beta cell line...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29723116/high-inter-individual-variability-of-serum-xanthine-oxidoreductase-activity-in-ibd-patients
#16
Berrie Meijer, Margien L Seinen, Tessa Hosman, Ronald K Linskens, Jan-Kees Kneppelhout, Godefridus J Peters, Chris Jj Mulder, Adriaan A van Bodegraven, Nanne Kh de Boer
OBJECTIVES: Thiopurines play an essential role in the management of inflammatory bowel diseases (IBD, i.e. Crohn's disease and ulcerative colitis). Over the past decade, several strategies to optimize treatment with thiopurines have been evaluated, including co-administration of allopurinol, a xanthine-oxidoreductase (XO) inhibitor, to low-dose thiopurine therapy. We aimed to assess the inter-individual variability of XO-activity between IBD-patients. METHODS: We assessed XO activity in serum of IBD-patients of two medical centers in The Netherlands using the Amplex® Red Xanthine/Xanthine Oxidase Assay Kit, which measures the superoxide formation in a coupled reaction to the red-fluorescent oxidation product, resofurine...
May 3, 2018: Nucleosides, Nucleotides & Nucleic Acids
https://www.readbyqxmd.com/read/29712837/mechanistic-studies-of-a-small-molecule-modulator-of-smn2-splicing
#17
Jingxin Wang, Peter G Schultz, Kristen A Johnson
RG-7916 is a first-in-class drug candidate for the treatment of spinal muscular atrophy (SMA) that functions by modulating pre-mRNA splicing of the SMN2 gene, resulting in a 2.5-fold increase in survival of motor neuron (SMN) protein level, a key protein lacking in SMA patients. RG-7916 is currently in three interventional phase 2 clinical trials for various types of SMA. In this report, we show that SMN-C2 and -C3, close analogs of RG-7916, act as selective RNA-binding ligands that modulate pre-mRNA splicing...
April 30, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29706778/millipede-and-centipede-assemblages-on-the-northern-and-southern-slopes-of-the-lowland-altais-southwestern-siberia-russia-diplopoda-chilopoda
#18
Pavel S Nefediev, Gyulli Sh Farzalieva, Ivan H Tuf, Khozhiakbar Kh Nedoev, Saparmurad T Niyazov
The total species richness in the myriapod assemblages of the lowland Altais near Charyshskoe Village, Altai Province, southwestern Siberia, Russia is estimated to be at least 19 species from ten genera, eight families, five orders, and two classes. The following species are new to SW Siberia: Lithobius (Ezembius) ostiacorum Stuxberg, 1876, L. vagabundus Stuxberg, 1876, and L. (Monotarsobius) nordenskioeldii Stuxberg, 1876, while L. (E.) proximus Sseliwanoff, 1880 and L. (M.) insolens Dányi & Tuf, 2012 are recorded for the first time from the Altai Province of Russia...
2018: ZooKeys
https://www.readbyqxmd.com/read/29697659/-myoclonus-of-the-middle-ear
#19
Kh M Diab, I V Naumova, O A Balakireva, V N Sokolova, L I Terekhina
The objective of the present study was to overview the foreign literature concerning middle ear myoclonus (MEM) known to be the most common cause of the manifestations of objective tinnitus. The authors reports two typical clinical cases of myoclonus of the middle ear. The present article is aimed at the enhancement of the awareness of the otorhinolaryngologists, audiologists, and neurologists of the condition of interest as a way to promote the further progress in its treatment.
2018: Vestnik Otorinolaringologii
https://www.readbyqxmd.com/read/29697648/-the-interdisciplinary-approach-to-the-rehabilitation-of-the-patients-presenting-with-congenital-atresia-of-the-external-auditory-canal-and-the-concomitant-microtia
#20
Kh M Diab, D N Nazaryan, N A Daikhes, A E Kharazyan, D S Kondratchikov, S V Yarantsev, O A Pashchinina, M M Cherninkiy
The objective of the present study was to develop and introduce into the clinical practice the method for the combined aesthetic and functional rehabilitation of the patients presenting with congenital atresia of the external auditory canal (CAEAC) and the concomitant microtia. A total of 8 patients at the age from 6 to 21 years with unilateral CAEAC and microtia were given the surgical treatment. During the intervention, atresia was resolved using the trans-mastoid approach, tympanoplasty of autofasciae and ossiculoplasty making use of the partial titanium prosthesis and the placement of cranial osteointegratable titanium implants...
2018: Vestnik Otorinolaringologii
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