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A case of successful management with splenectomy of intractable ascites due to congenital dyserythropoietic anemia type II-induced cirrhosis

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World Journal of Gastroenterology 2006年第5期12卷 818-821页

作者： Themistoklis Vassiliadis Vassilia Garipidou Vassilios Perifanis Konstantinos Tziomalos OIga Giouleme Kalliopi Patsiaoura Michalis Avramidis Nikolaos Nikolaidis Sofia Vakalopoulou Ioannis Tsitouridis Antonios Antoniadis Panagiotis Semertzidis anna kioumi Evangelos Premetis Nikolaos Eugenidis 2~(nd) Propedeutic Department of Internal Medicine Aristotle University of ThessalonikiHippokration General HospitalThessalonikiGreece Department of Pathology Hippokration General HospitalThessalonikiGreece Department of Radiology Papageorgiou General HospitalThessalonikiGreece Organ Transplant Unit Aristotle University of ThessalonikiHippokration General HospitalThessalonikiGreece Department of Hematology Papageorgiou General Hospital Thessaloniki Greece Hematology Laboratory Aghia Sophia Children's HospitalAthensGreece

The congenital dyserythropoietic anemias comprise a group of rare hereditary disorders of erythropoiesis, characterized by ineffective erythropoiesis as the predominant mechanism of anemia and by characteristic morphological aberrations of the majority of erythroblasts in the bone marrow. Congenital dyserythropoietic anemia type II is the most frequent type. All types of congenital dyserythropoietic anemias distinctly share a high incidence of iron loading. Iron accumulation occurs even in untransfused patients and can result in heart failure and liver cirrhosis. We have reported about a patient who presented with liver cirrhosis and intractable ascites caused by congenital dyserythropoietic anemia type II. Her clinical course was further complicated by the development of autoimmune hemolytic anemia. Splenectomy was eventually performed which achieved complete resolution of ascites, increase of hemoglobin concentration and abrogation of transfusion requirements.

关键词： Portosystemic shunt Hemosiderosis Splenectomy Intractable ascites Congenital dyserythropoietic anemia type Ⅱ

Successful Management of Sickle Cell Intrahepatic Cholestasis with Combined Use of Exchange Transfusion and Single-Pass Albumin Dialysis: A Case Report

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Open Journal of Blood Diseases 2013年第1期3卷 36-42页

作者： Vassilios Papadopoulos anna Karagianni Vaia Papageorgiou Maria Topalidou Aristea-Lia Mpellou Panagiotis Patinakis Fotios Girtovitis Despina Pantelidou anna kioumi Blood Center and Blood Transfusion Service AHEPA University Hospital Thessaloniki Greece Hematology Department Papageorgiou General Hospital Thessaloniki Greece Nephrology Department Papageorgiou General Hospital Thessaloniki Greece Second Department of Internal Medicine Medical School Aristotle University Thessaloniki Greece Thalassemia and Hemoglobinopathies Unit First Department of Internal Medicine Medical School Aristotle University Thessaloniki Greece.

Sickle-cell intrahepatic cholestasis (SCIC) is an uncommon complication of sickle-cell disease (SCD), which can be life-threating if left untreated. We present the case of a 28-year-old man with SCD, who presented with jaundice and abdominal pain, one month after hydroxyurea discontinuation. Laboratory investigation revealed solely increased serum bilirubin, mainly conjugated, and imaging studies revealed choledocholithiasis. The patient unterwent an endoscopic sphincterectomy, but his jaundice deteriorated. Sickle-cell intrahepatic cholestasis was suspected and he received aggressive exchange transfusion therapy in combination with hydroxyurea. The jaundice had no signs of improvement;in fact total bilirubin raised up to 1053.7 μmol/L (61.62 mg/dl). Subsequently, the patient was treated with single-pass albumin dialysis (SPAD), in order to remove the excess bilirubin and protect mainly the brain and liver cells from its toxic effects. His laboratory values started to improve after one-and-a-half months of treatment. For the next two months, exchange transfusions were continued and bilirubin gradually returned to baseline values. The successful response appeared after the combined use of exchange transfusion and SPAD, which is being reported for the first time.

关键词： Sickle-Cell Intrahepatic Cholestasis Exchange Transfusion Single-Pass Albumin Dialysis (SPAD) Hydroxyurea

Cyclicity of the Lower Buntsandstein in the eastern part of the Central European Basin:implications for Early Triassic palaeogeography and for geochronological calibration

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Journal of Palaeogeography 2024年第2期13卷 252-292页

作者： anna Becker Polish Geological Institute-National Research Institute 4 Rakowiecka str.00-975 WarsawPoland

Lower Buntsandstein small—scale cycles recognized in the Central European Basin(CEB) are readily used for astrochronological calibration of the Early Triassic time scales,although they are not well studied *** borehole sections from the eastern part of the CEB,forming a south-north transect perpendicular to the basin axis,were studied in terms to better understand the depositional history of the Lower Buntsandstein developed as the Baltic Formation in the studied Polish part of the *** sedimentary facies were recognized,based on lithological and sedimentological investigations of 655.7 m of drill cores from the Otyń IG 1,Gorzów Wielkopolski IG 1 and Kamień Pomorski IG 1 *** facies can be grouped according to a lithological criterion into facies of predominantly siliciclastic lithology(including 9facies types) and facies of predominantly carbonate lithology(including 2 facies types).Facies analysis allowed to distinguish 8 facies associations of:1) alluvial fan,2) playa,3) sandy-muddy coastal plain,4)embayment and distal delta,5) lagoon,6) sand bars or shoals,7) ooidal shoals or bars,and 8) ***-upward(DC) and shallowing-upward(SC) sedimentary cycles were recognized in parts of the Baltic Formation,with DCs dominating in the southernmost located Otyń IG 1,and SCs dominating in Gorz ow Wielkopolski IG 1,located in the axial part of the *** cycles are very *** statistical significance of the sedimentary cycles is relatively low according to Markov-chain analysis conducted with the phpSedistat software of Stanova et al.(2009).Analysis of small—scale cycles performed on well logs of investigated boreholes and additional boreholes in the vicinity of Otyń IG 1,implementing the earlier study of Becker(2005),showed that the correlation of well-log cycles(GR cycles) and sedimentary cycles is not *** cycles can be roughly correlated with lithological carbonate—siliciclastic cycles(c-s cycles),refle

关键词： Triassic Lower Buntsandstein Cyclicity Central European Basin

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Cornea modelling

Eye and Vision 2020年第1期7卷 11-25页

作者： anna Pandolfi Department of Civil and Environmental Engineering Politecnico di MilanoPiazza Leonardo da Vinci 3220133 MilanoItaly

Background:Biomechanics introduces numerous technologies to support clinical practice in ophthalmology,with the goal of improving surgical outcomes and to develop new advanced technologies with minimum impact on clinical ***,a few misconceptions on the way that computational methods should be applied to living tissues contributes to a lack of confidence towards computer-based ***:Corneal biomechanics relies on sound theories of mechanics,including concepts of equilibrium,geometrical measurements,and complex material *** peculiarities of biological tissues require the consideration of multi-physics,typical of the eye environment,and to adopt customized geometrical models constructed on the basis of advanced optical imaging and in-vivo ***:Patient-specific models are able to predict the outcomes of refractive surgery and to exploit the results of in-vivo test to characterize the material properties of the corneal ***:Corneal biomechanics can become an important support to clinical practice,provided that methods are based on the actual multi-physics and use customized geometrical and mechanical models.

关键词： Corneal biomechanics Physiologic configuration Tonometry modelling Refractive surgery modelling

Joint power and spectrum allocation algorithm in cognitive radio networks

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Journal of Systems Engineering and Electronics 2011年第4期22卷 691-701页

作者： anna Auguste Anghuwo Communication Research Center Harbin Institute of Technology

The spectrum sharing problem between primary and cognitive users is mainly investigated. Since the interference for primary users and the total power for cognitive users are constrained, based on the well-known water-filling theorem, a novel one-user water-filling algorithm is proposed, and then the corresponding simulation results are given to analyze the feasibility and validity. After that this algorithm is used to solve the communication utility optimization problem subject to the power constraints in cognitive radio network. First, through the gain to noise ratio for cognitive users, a subcarrier and power allocation algorithm based on the optimal frequency partition is proposed for two cognitive users. Then the spectrum sharing algorithm is extended to multiuser conditions such that the greedy and parallel algorithms are proposed for spectrum sharing. Theory and simulation analysis show that the subcarrier and power allocation algorithms can not only protect the primary users but also effectively solve the spectrum and power allocation problem for cognitive users.

关键词： cognitive radio spectrum sharing water-filling algo-rithm interference constraint communication overhead.

Plasma-assisted oxidation of benzoic acid

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Frontiers of Chemical Science and Engineering 2020年第4期14卷 513-521页

作者： anna Khlyustova Nikolay Sirotkin Laboratory of Chemistry of Hybrid Nanomaterials and Supermolecular Systems G.A.Krestov Institute of Solution Chemitry of Russian Academy of SciencesIvanovo 153045Russia

Plasma-assisted oxidation of organic com-pounds is one of the developing technologies for wastewater *** effectively accelerate degradation processes due to plasma generated reactive species and ultra-violet *** of BA in aqueous solutions by the atmospheric pressure glow discharge and underwater diaphragm discharge was studied and monitored by fluorescence and spectrophoto-metric *** type and solution pH affect the formation rates of mono-and dihydroxybenzoic *** derivatives were formed only by glow discharge *** yields of hydroxyl radical were estimated on the kinetics data for the hydroxylation of benzoic *** steps of the hydroxylation processes and further oxidation were described.

关键词： atmospheric pressure glow discharge under-water diaphragm discharge oxidation benzoic acid hydroxyl radical

Each coin has 2 sides: a positive role of alien Potamopyrgus antipodarum (Grey, 1843) snails in reducing the infection of native lymnaeids with trematodes

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Current Zoology 2024年第2期70卷 262-269页

作者： anna Cichy anna Stanicka Elzbieta Zbikowska Faculty of Biological and Veterinary Sciences Nicolaus Copernicus University in TorunLwowska 187-100 TorunPoland

The change in the distribution of organisms in freshwater ecosystems due to natural or manmade processes raises the question of the impact of alien species on local *** most studies indicate a negative effect,the positive one is more difficult to discern,espe-cially in multispecies systems,including hosts and *** purpose of the study was to check whether the presence of an alien host,Potamopyrgus antipodarum,reduces the intensity of Echinoparyphium aconiatum metacercariae in a native host,Radix *** additionally tested the impact of water temperature and the biomass of the alien host on the dilution *** experimentally studied(1)the lifespan of echinostome cercariae in different temperatures,(2)the infectivity of cercariae toward the alien host and native host,and(3)the impact of different biomass of the alien host on the intensity of metacercariae in the native *** found that cercarial survival and infectivity were tem-perature ***,cercarial survival decreased with increasing temperature,contrary to cercarial *** cercariae entered the renal cavity of both the native host and alien host,and successfully transformed into *** number of metacercariae in the native host decreased with the increasing biomass of the alien *** results indicate that lymnaeids may benefit from the co-occur-rence with P antipodarum,as the presence of additional hosts of different origins may reduce the prevalence of parasites in native ***,the scale of the dilution effect depends not only on the increased spectrum of susceptible hosts but also on the other variables of the environment,including water temperature and host density.

关键词： biological invasion density dilution effect echinostomes Radix spp. temperature.

Regulation of Meristem Size by Cytokinin Signaling

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Journal of Integrative Plant Biology 2011年第6期53卷 446-454页

作者： anna Skylar Molecular and Computational Biology University of Southern CaliforniaLos AngelesCA

The plant meristems possess unique features that involve maintaining the stem cell populations while providing cells for continued development. Although both the primary shoot apical meristem （SAM） and the root apical meristem （RAM） are specified during embryogenesis, post-embryonic tissue proliferation is required for their full establishment and maintenance throughout a plants＇ life. The phytohormone cytokinin （CK） interacts with other systemic signals and is a key regulator of meristem size and functions. The SAM and the RAM respond to CK stimulations in different manners： CK promotes tissue proliferation in the SAM through pathways dominated by homeobox transcription factors, including the class I KNOX genes, ST^P, and WUS; and curiously, it favors proliferation at low levels and differentiation at a slightly higher concentration in the RAM instead. Here we review the current understanding of the molecular mechanisms underlying CK actions in regulating meristematic tissue proliferation.

关键词： cytokinin signaling meristem tissue proliferation.

Learning from Evolution： Thellungiella Generates New Knowledge on Essential and Critical Components of Abiotic Stress Tolerance in Plants

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Molecular Plant 2009年第1期2卷 3-12页

作者： anna Amtmann Plant Science Group FBLS University of Glasgow Glasgow G12 8QQ UK

Thellungiella salsuginea （halophila） is a close relative of Arabidopsis thaliana but, unlike A. thaliana, it grows well in extreme conditions of cold, salt, and drought as well as nitrogen limitation. Over the last decade, many laboratories have started to use Thellungiella to investigate the physiological, metabolic, and molecular mechanisms of abiotic stress tolerance in plants, and new knowledge has been gained in particular with respect to ion transport and gene expression. The advantage of Thellungiella over other extremophile model plants is that it can be directly compared with Arabidopsis, and therefore generate information on both essential and critical components of stress tolerance. Thellungiella research is supported by a growing body of technical resources comprising physiological and molecular protocols, ecotype collections, expressed sequence tags, cDNA-libraries, microarrays, and a pending genome sequence. This review summarizes the current state of knowledge on Thellungiella and re-evaluates its usefulness as a model for research into plant stress tolerance.

关键词： abiotic/environmental stress ion channels adaptation - evolutionary comparative genomics gene expres-sion Brassica.