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Nitric oxide and tumour necrosis factor alpha in the process of pseudoexfoliation glaucoma

International Journal of Ophthalmology(English edition) 2016年第8期9卷 1138-1142页

作者： Tatjana S.Sarenac Vulovic Sladjana M.Pavlovic Vladimir LJ.Jakovljevic katarina b.janicijevic Nemanja S.Zdravkovic Department of Ophthalmology Clinical Center Kragujevac Center for Molecular Medicine and Stem Cell Research Faculty of Medical Sciences University of Kragujevac Department of Physiology Faculty of Medical SciencesUniversity of Kragujevac Faculty of Medical Sciences University of Kragujevac

AIMTo establish the role of nitric oxide (NO), ascorbic acid and tumour necrosis factor-α (TNF-α) in the pathogenesis of pseudoexfoliation glaucoma (XFG).METHODSOur study included 120 patients who were referred for cataract surgery. All patients were divided into four groups according to clinical findings: XFG, early and late pseudoexfoliation syndrome (XFS), and cataract (without pseudoexfoliation). Serum and aqueous humour levels of the ascorbic acid, NO and TNF-α were measured. The concentrations of the ascorbic acid and NO were measured by an appropriate spectrophotometric method. Enzyme-linked immunosorbent assay (ELISA) was used to determine TNF-α *** humour concentration of ascorbic acid was significantly lower in patients with late XFS (0.61±0.11 mmol/L) and XFG (0.48±0.15 mmol/L) compared to patients with early XFS (0.9±0.15 mmol/L) and cataract (1.16±0.22 mmol/L), while there was no difference in serum concentration in all examined groups. Aqueous humour concentration of NO was significantly higher in patients with XFG (77.7±11.4 µmol/L) compared to patients with early XFS (50.27±9.34 µmol/L) and cataract (49.77±7.1 µmol/L), while serum concentration was increased in the early stage of XFS (73.26±8.29 µmol/L). Aqueous humour level of proinflammatory cytokine TNF-α was increased in patients with XFS (early 460.04±18.32 pg/mL; late 502.42±53.23 pg/mL) and XFG (510.34±43.07 pg/mL), while there was no difference in serum level in all examined groups of *** ascorbic acid and elevated NO and inflammation related cytokine TNF-α level in aqueous humour of the patients with developed XFG suggest that oxidative stress induces local inflammation.

关键词： ascorbic acid nitric oxide pseudoexfoliation tumour necrosis factor alpha

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Primary pancreatic lymphoma:A case report and review of literature

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World Journal of Clinical Oncology 2024年第11期15卷 1444-1453页

作者： Marko M Stojanovic Vesna brzacki Goran Marjanovic Milica Nestorovic Jelena Zivadinovic Miljan Krstic Marko Gmijovic Ilija Golubovic Svetlana Jovanovic Miroslav P Stojanovic katarina Terzic Department of Gastroenterology and Hepatology Clinic University Clinical Center NisMedical Faculty University of NisNis 18000Serbia Immunology Medical Faculty University of NisNis 18000Serbia Clinic for Digestive Surgery University Clinical CenterMedical Faculty University of NisNis 18000Serbia Clinic of Aneasthesiology and Intensive Therapy University Clinical Center NisUniversity of NisNis 18000Serbia Department of Pathology Medical Faculty University of NisNis 18000Serbia

bACKGROUND Primary pancreatic lymphoma(PPL)is a rare tumor that mimics pancreatic adenocarcinoma,leading to diagnostic and therapeutic *** accounts for 0.2%of all pancreatic tumors and is typically treated with ***,the long-term survival rates for PPL with chemotherapy and radiotherapy alone are *** to the improvements in pancreatic surgery,there is a need to reevaluate the treatment strategies for *** SUMMARY A 62-year-old male presented to our clinic.A biopsy was unsuccessful,and the imaging was suggestive of pancreatic ***,subtotal splenopancreatectomy was performed and histopathology was *** was then diagnosed with primary pancreatic diffuse large b-cell *** received adjuvant chemotherapy and ***,the patient is alive with no evidence of disease 36 months after *** The potential role of surgery in the treatment of PPL should be emphasized and added in the management protocol of early stage lymphoma.

关键词： Lymphoma Primary Pancreas Treatment Strategy Surgery Case report

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Fragment antigen binding domains (F_(ab)s) as tools to study assembly-line polyketide synthases

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Synthetic and Systems biotechnology 2022年第1期7卷 506-512页

作者： katarina M.Guzman Chaitan Khosla Department of Chemical Engineering Stanford UniversityStanfordCA94305USA Department of Chemistry Stanford ChEM-HStanford UniversityStanfordCA94305USA

The crystallization of proteins remains a bottleneck in our fundamental understanding of their ***,discovering tools that aid crystallization is *** this review,the versatility of fragment-antigen binding domains(F_(ab)s)as protein crystallization chaperones is discussed.F_(ab)s have aided the crystallization of membrane-bound and soluble proteins as well as *** ability to bind three F_(ab)s onto a single protein target has demonstrated their potential for crystallization of challenging *** describe a high-throughput workflow for identifying F_(ab)s to aid the crystallization of a protein of interest(POI)by leveraging phage display technologies and differential scanning fluorimetry(DSF).This workflow has proven to be especially effective in our structural studies of assembly-line polyketide synthases(PKSs),which harbor flexible domains and assume transient *** are of interest to us due to their ability to synthesize an unusually broad range of medicinally relevant *** years of research studying these megasynthases,their overall topology has remained *** F ab in particular,1b2,has successfully enabled X-ray crystallographic and single particle cryo-electron microscopic(cryoEM)analyses of multiple modules from distinct assembly-line *** use has not only facilitated multidomain protein crystallization but has also enhanced particle quality via cryoEM,thereby enabling the visualization of intact PKS modules at near-atomic(3–5Å)*** identification of PKS-binding F_(ab)s can be expected to continue playing a key role in furthering our knowledge of polyketide biosynthesis on assembly-line PKSs.

关键词： Crystallography Cryo-EM Polyketide synthases Fragment antigen binding domains

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Critical minimum temperature limits xylogenesis and maintains treelines on the southeastern Tibetan Plateau

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Science bulletin 2017年第11期62卷 804-812页

作者： Xiaoxia Li Eryuan Liang Jozica Gricar Sergio Rossi katarina Cufar Aaron M. Ellison Key Laboratory of Alpine Ecology and biodiversity Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100101 China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101 China Sloven ian Forestry Institute Department of Yield and Silviculture Vecna pot 2 S1-1000 Ljubljana Slovenia University of Quebec in Chicoutimi Departement des Sciences Fondamentales 555 Boulevard de l'Universite Chicoutimi (QC) G7H2B1 Canada Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems Guangdong Provincial Key Laboratory of Applied Botany South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China University of Ljubljana Biotechnical Faculty Department of Wood Science and Technology Jamnikarjeva 101 S1-1000 Ljubljana Slovenia Harvard Forest Harvard University 324 North Main St. Petersham MA 01366 USA

Physiological and ecological mechanisms that define treelines are still debated. It has been suggested that the absence of trees above the treeline is caused by low temperatures that limit growth. Thus, we hypothesized that there is a critical minimum temperature （CTmin） preventing xylogenesis at treeline. We tested this hypothesis by examining weekly xylogenesis across three and four growing seasons in two natural Smith fir （Abies georgei var. srnithii） treeline sites on the southeastern Tibetan Plateau. Despite differences in the timing of cell differentiation among years, minimum air temperature was the dominant climatic variable associated with xylem growth; the critical minimum temperature （CTmin） for the onset and end of xylogenesis occurred at 0.7 ±0.4 ℃. A process-based modelling chronology of tree-ring formation using this CTmin was consistent with actual tree-ring data. This extremely low CTmin permits Smith fir growing at treeline to complete annual xylem production and maturation and provides both support and a mechanism for treeline formation.

关键词： Cambial activity Critical minimum temperature Timberline Xylem Vaganov-Shashldn model

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Pentadecapeptide bPC 157 resolves Pringle maneuver in rats,both ischemia and reperfusion

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World Journal of Hepatology 2020年第5期12卷 184-206页

作者： Marijan Kolovrat Slaven Gojkovic Ivan Krezic Dominik Malekinusic borna Vrdoljak katarina Kasnik Kovac Tamara Kralj Domagoj Drmic Ivan barisic katarina Horvat Pavlov Andreja Petrovic Antonija Duzel Mario Knezevic Ivan Mirkovic Antonio Kokot Alenka boban blagaic Sven Seiwerth Predrag Sikiric Departments of Pharmacology and Pathology School of MedicineUniversity of ZagrebZagreb 10000Croatia

bACKGROUND The Pringle maneuver[portal triad obstruction(PTO)]provides huge disturbances during ischemia and even more thereafter in ***,a possible solution may be stable gastric pentadecapeptide bPC 157,with already documented beneficial effects in ischemia/reperfusion ***,bPC 157,as a cytoprotective agent,successfully resolved vessel occlusions in rats(ischemic colitis;deep vein thrombosis,superior anterior pancreaticoduodenal vein;bile duct cirrhosis)through rapid collateral vessel recruitment to circumvent vessel ***,medication bPC 157 regimens were administered as a single challenge before and during ischemia or,alternatively,at various time points during *** To introduce bPC 157 therapy against pringle *** In deeply anesthetised rats,the portal triad was clamped up for 30 *** then underwent reperfusion for either 15 min or 24 ***[(10μg,10 ng/kg)regimens,administered as a single challenge]picked(a)ischemia,PTO period[at 5 min before(ip)or at 5 or 30 min of ligation time(as a bath to PTO)]or(b)reperfusion,post-PTO period[at 1 or 15 min(bath during surgery)or 24 h(ip)reperfusion-time].We provided gross,microscopy,malondialdehyde,serum enzymes,electrocardiogram,portal,caval,and aortal pressure,thrombosis and venography *** bPC 157 counteracts electrocardiogram disturbances(increased P wave amplitude,S1Q3T3 QRS pattern and tachycardia).Rapidly presented vascular pathway(portal vein-superior mesenteric vein-inferior mesenteric vein-rectal veins-left ileal vein-inferior caval vein)as the adequate shunting immediately affected disturbed *** hypertension and severe aortal hypotension during PTO,as well as portal and caval hypertension and mild aortal hypotension in reperfusion and refractory ascites formation were markedly attenuated(during PTO)or completely abrogated(reperfusion);thrombosis in portal vein tributaries and inferior caval vein o

关键词： bPC 157 Pringle maneuver Rats Portal hypertension Caval hypertension Ischemia

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Mossbauer Spectroscopy of Fe-Ni-Nb-b Alloy in Weak Magnetic Field

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Journal of Modern Physics 2012年第3期3卷 274-277页

作者： Jozef Sitek Jarmila Degmova katarina Sedlackova Julius Dekan Institute of Nuclear and Physical Engineering Faculty of Electrical Engineering and Information TechnologySlovak University of TechnologyBratislavaSlovakia

Amorphous and nanocrystalline (Fe1–xNix)81Nb7b12 (x = 0, 0.25, 0.5, 0.75) alloys were measured by M?ssbauer spectrometry in the weak external magnetic field of 0.5 T. From structural analyses, ferromagnetic bcc-FeNi and fcc-FeNi and paramagnetic (Fe-Ni)23b6 phases were identified in the annealed samples. It was shown that in the external magnetic field the intensities of the 2nd and the 5th lines (A23 parameter) are the most sensitive M?ssbauer parameters. Rather small changes were observed in the values of internal magnetic field. Our results showed that the amorphous precursor is more sensitive to the influence of external magnetic field than the nanocrystalline alloy. All spectra of amorphous precursor showed the increase of A23 parameter and decrease of internal magnetic field values of about 1 T (±0.5 T) under influence of external magnetic field. In the case of nanocrystalline samples the tendency for the values of internal magnetic field is similar but the effect is not so pronounced. The measurements confirmed that even weak external magnetic field affected orientation of the net magnetic moments. Our results indicate that effect of the external magnetic field is stronger in the case of amorphous samples due to their disordered structure.

关键词： Mossbauer Spectroscopy Nanocrystalline Fe-Ni Alloy Soft Magnetic Materials

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Correlation of methylprednisolone chemosensitivity in vitro with C3435T MDR1 polymorphism and clinical outcome in childhood acute lymphoblastic leukemia.

Correlation of methylprednisolone chemosensitivity in vitro ...

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第十五届国际药理学大会

作者： Mirossay Ladislav Oravkinova Irina Tokarcikova katarina Jamborova Erika Sarissky Marek Mojzis Jan Mirossay Andrej P.J.Safarik Univ. Fac. Med.Dept. Pharmacol.KosiceSlovak Republic. Pediatric Hospital Dept.Pediat.Oncol.KosiceSlovak Republic. P.J. Safarik Univ. Fac. Med.Dept.Pharmacol.KosiceSlovak Republic. P.J. Safarik Univ. Fac. Med.Dept.Pharmacol.KosiceSlovak Republic. P.J. Safarik Univ. Fac. Med.Dept.Pharmacol.KosiceSlovak Republic. P.J. Safarik Univ. Fac. Med.Dept.Pharmacol.KosiceSlovak Republic. P.J. Safarik Univ. Fac. Med.Dept.Pharmacol.KosiceSlovak Republic.

＜正＞ Objective: Cellular drug resistance measured at initial diagnosis is associated with an increased relapse risk and unfavorable clinical outcome in childhood ALL. In addition, the presence of adverse clinical prognostic factors such as age. and pro - b and T - lineage immunophenotype have been shown to be associated with cellular resistance to drugs in children with ALL. P - glycoprotein （Pgp）, the gene product of MDR1, confers multidrug resistance to a number of antineoplastic agents. A silent mutation in the exon 26 （C3435T） has been associated with altered expression and function of Pgp in tissues. Methods: MIT cytotoxicity assay, PCR alnalysis of C3435T polymorphism in MDR1 gene. Results: We compared the impact of C3435T polymorphism on in vitro chemosensitivity of leukemia cells to methylprednisolone. CC genotype carriers showed higher IC50 values in comparison with the carriers of CT or TT genotype. Statistical analysis Mann- Whitney U test showed P = 0.035. Conclusions: The group of patients with CC genotype seems to be more resistant to glucocorticoids, or at least methyprednisolone.

关键词： ALL MDR1 gene polymorphism glucocorticoid

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The quest for a globally comprehensible Russula language

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Fungal Diversity 2019年第6期99卷 369-449页

作者： Slavomır Adamcik brian Looney Miroslav Cabon Sona Jancovicova katarina Adamcikova Peter G.Avis Magdalena barajas Rajendra P.bhatt Adriana Corrales Kanad Das Felix Hampe Aniket Ghosh Genevieve Gates Ville Kalviainen Abdul Nasir Khalid Munazza Kiran Ruben De Lange Hyun Lee Young Woon Lim Alejandro Kong Cathrin Manz Clark Ovrebo Malka Saba Tero Taipale Annemieke Verbeken Komsit Wisitrassameewong bart buyck Institute of botany Plant Science and Biodiversity CenterSlovak Academy of SciencesDubravska cesta 984523 BratislavaSlovakia Department of biology Duke University130 Science DriveDurhamNC 27708-0338USA Department of botany Faculty of Natural SciencesComeniusUniversity in BratislavaRevova 3981102 BratislavaSlovakia Department of Plant Pathology and Mycology Institute of Forest EcologySlovak Academy of Sciences ZvolenAkademicka 294901 NitraSlovakia Indiana University Northwest 3400 BroadwayMarram HallRoom 308GaryIN 46408USA Department of botany&Microbiology H.N.B.Garhwal UniversityGarhwalSrinagar 246174UttarakhandIndia Programa de biologia Facultad de Ciencias Naturales y MatematicasUniversidad del RosarioCr.24#63C-69BogotaD.C.Colombia A.J.C.bose Indian botanic Garden Botanical Survey of IndiaP.O.Botanic GardenHowrah 711103India Grafenroda Germany Tasmanian Institute of Agriculture Private Bag 98HobartTAS 7001Australia Helsinki Finland Department of botany University of the PunjabQuaid-e-Azam CampusLahore 54590Pakistan Department of biology Ghent UniversityK.L.Ledeganckstraat 359000 GhentBelgium School of biological Sciences and Institute of Microbiology Seoul National UniversitySeoul 08826South Korea Centro de Investigaciones en Ciencias biologicas Km.10.5 Carretera San Martin Texmelucan-TlaxcalaCP.90120IxtacuixtlaTlaxcalaMexico Department of Mycology Goethe University Frankfurt am MainBiologicumMax-von-Laue-Str.1360438 Frankfurt am MainGermany Department of biology University of Central Oklahoma100.N.University DriveBox 89EdmondOK 73034USA Department of Plant Sciences Quaid-i-Azam UniversityIslamabad 45320Pakistan Koskenkylan Saha Finland Institut de Systematique Ecologie et Biodiversite(ISYEB)Museum national d’histoire naturelleCNRSSorbonne UniversiteEPHE57 rue CuvierCP 3975005 ParisFrance

Since 2007,the quality of Russula descriptions has improved and the use of molecular support for species delimitation and the number of published new species has ***,the description style is not consistent and has regional or author-specific *** recent publications still favour descriptions of spores compared to hymenium and pileipellis elements,and usually only the spore size is provided with statistical *** study proposes standards for descriptions of the microscopic structure of Russula species(Russulaceae,Agaricomycetes).We present the description template,the template measurements table,the specific terminology and the essential chemical *** proposed standards were tested by mycologists from 11 countries who met at the Russula Microscopy Workshop in *** of 26 species from 9 countries and four continents were prepared,among them ***,***,*** and *** are re-described and 15 species are introduced as new:***,***,***,***,***,***,***,***,***,***,***,***,***,***-pauli and *** descriptions for candidate new species are provided without a formal name *** comparison of species described in this study with available similar descriptions of related species suggests that microscopic characters from all parts of the basidiomata can be equally important for species recognition and they deserve the same treatment including number of measurements and *** majority of recent studies does not recognise differences between the pileus margin and centre,but more than one-third of the species described in this study show distinct differences between the pileus areas,emphasizing the importance to specify the origin of pileipellis *** study proved that there is frequently insufficient difference in the I

关键词： Morphology standards New species Phylogeny Species delimitation Taxonomy

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Cryo-EM structure of the plant 26S proteasome

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Plant Communications 2022年第3期3卷 116-126页

作者： Susanne Kandolf Irina Grishkovskaya katarina belacic Derek L.bolhuis Sascha Amann brent Foster Richard Imre Karl Mechtler Alexander Schleiffer Hemant D.Tagare Ellen D.Zhong Anton Meinhart Nicholas G.brown David Haselbach Research Institute of Molecular Pathology(IMP) Vienna BioCenter(VBC)Campus-Vienna-BioCenter 11030 ViennaAustria Department of Radiology and biomedical Imaging Yale UniversityNew HavenCT 06510USA Department of Pharmacology and Lineberger Comprehensive Cancer Center University of North Carolina School of MedicineChapel HillNC 27599USA Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of TechnologyCambridgeMA 02139USA Vienna bioCenter PhD Program Doctoral School of the University at Vienna and Medical University of ViennaVienna BioCenter(VBC)ViennaAustria Institute of Physical Chemistry University of FreiburgAlbertstraße 21Freiburg 79104Germany CIbSS Centre for Integrative biological Signalling Studies University of FreiburgFreiburgGermany

Targeted proteolysis is a hallmark of *** is especially important in long-lived cells that can be found in higher eukaryotes,like *** task is mainly fulfilled by the ubiquitin–proteasome ***,proteolysis by the 26S proteasome is vital to development,immunity,and cell *** the yeast and animal proteasomes are well characterized,there is only limited information on the plant *** determined the first plant 26S proteasome structure from Spinacia oleracea by single-particle electron cryogenic microscopy at an overall resolution of 3.3 A°.We found an almost identical overall architecture of the spinach proteasome compared with the known structures from mammals and ***,we noticed a structural difference in the proteolytic active b1 ***,we uncovered an unseen compression state by characterizing the proteasome’s conformational *** suspect that this new conformation of the 20S core protease,in correlation with a partial opening of the unoccupied gate,may contribute to peptide release after *** data provide a structural basis for the plant proteasome,which is crucial for further studies.

关键词： 26S proteasome spinach UPS cryo-EM conformational landscape

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