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Biogeochemical conversion of sulfur species in saline lakes of Steppe Altai

Journal of Oceanology and Limnology 2018年第3期36卷 676-686页

作者： BORZEnKO Svetlana V. KOLPAKOVA marina n. SHVARTSEV Stepan L. ISUPOV Vitaly P. Institute of natural Resources Ecology and CryologySiberian Branch of Russian Academy of SeiencesChita 672049Russia Sobolev Institute of Geology and Mineralogy Siberian Branch of Russian Academy of SciencesNovosibirsk 630090Russia national Research Tomsk Polytechnic University Tomsk 634050Russia Tomsk Department of the Trofimuk Institute of Petroleum-Gas Geology and Geophysics Siberian Branch of the Russian Academy of SciencesTomsk 634050Russia Institute of Solid State Chemistry and Mechanochemistry Siberian Branch of Russian Academy of SciencesNovosibirsk 630090Russia

The aim of the present research is to identify the main mechanisms of sulfur behavior in saline lakes in the course of time and followed transformations in their chemical composition. The influence of water on chemical composition of biochemical processes involved in decomposition of organic matter was determined by the study of behavior of reduced forms of sulfur in lakes. The determination of reduced forms of sulfur was carried out by successive transfer of each form of sulfur to hydrogen sulfide followed by photometric measurements. The other chemical components were determined by standard methods(atomic absorption, potentiometric method, titration method and others). The salt lakes of the Altai steppe were studied in summer season 2013–2015. Analysis of the chemical composition of the saline lakes of Altai Krai has shown that carbonate-, hydrocarbonate-and chloride ions dominate among anions; sodium is main cation; sulfates are found in subordinate amounts. Reduced forms of sulfur occur everywhere: hydrogen and hydrosulfide sulfur S^(2-) prevail in the bottom sediments; its derivative—elemental S^0—prevails in the lakes water. The second important species in water of soda lakes is hydrosulfide sulfur S^(2-), and in chloride lakes is thiosulfate sulfur S_2O_2^(3ˉ). The lag in the accumulation of sulfates in soda lakes in comparison to chloride lakes can be explained by their bacterial reduction, followed by the formation and deposition of iron sulfides in sediments. In chloride lakes gypsum is a predominantly barrier for sulfates.

关键词： saline lake sulfate reduction gypsum Altai

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Changing delta hepatitis patient profile:A single center experience in Valencia region,Spain

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World Journal of Hepatology 2020年第6期12卷 277-287页

作者： Helena Hernàndez-Èvole Álvaro Briz-Redón marina Berenguer Departament de Medicina University of ValènciaValencia 46010Spain Statistics Office City Council of ValènciaValencia 46002Spain Liver Transplantation and Hepatology Unit Hospital Universitari I Politècnic La FeValencia 46026Spain CIBERehd Instituto de Salud Carlos ⅢMadrid 28029Spain ISS La Fe Valencia 46026Spain

BACKGROUnD Delta hepatitis is a rare infection with an aggressive disease *** almost three decades,however,there have been no epidemiological studies in our traditionally endemic *** To investigate the prevalence of delta hepatitis in a sample of patients with chronic hepatitis B virus(HBV)infection followed at a Hepatology Unit in Valencia,*** Retrospective evaluation of anti-hepatitis D virus-immunoglobulin G seroprevalence among patients with chronic HBV infection(n=605)followed at a reference Hepatology Unit in *** The prevalence of anti-hepatitis D virus-immunoglobulin G among HBV-infected patients was 11.5%:Male(63%)and median age of 52 *** majority were born in Spain(67%)and primarily infected through intravenous drug ***,a significant percent(24.5%),particularly those diagnosed in more recent years,were migrants presumably nosocomially *** such as diabetes(8.5%),obesity/overweight(55%),and alcohol consumption(34%)were frequent.A high proportion of patients developed liver complications such as cirrhosis(77%),liver decompensation(81%),hepatocellular carcinoma(HCC)(16.5%),or required liver transplantation(LT)(59.5%).Diabetes was associated with progression to cirrhosis,LT,and *** sex,increasing age,and alcohol were associated with LT and *** to HBV mono-infected patients,delta individuals developed cirrhosis and liver decompensation more frequently,with no differences in HCC *** Patients infected in the 1980’s were mostly locals infected through intravenous drug use,whereas those diagnosed recently are frequently non-Spanish natives from endemic *** of their origin,patients are predominantly male with significant comorbidities,which potentially play a major role in disease *** confirm a high rate of subsequent liver complications.

关键词： Viral hepatitis Delta hepatitis Cirrhosis Liver transplantation Immigration Valencia

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Plant cell wall-mediated disease resistance:Current understanding and future perspectives

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Molecular Plant 2024年第5期17卷 699-724页

作者： Antonio Molina Lucıa Jorda Miguel Angel Torres marina Martın-Dacal Diego Jose Berlanga Patricia Fernandez-Calvo Elena Gomez-Rubio Sonsoles Martın-Santamarıa Centro de Biotecnología y Genómica de Plantas Universidad Politécnica de Madrid(UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria(INIA/CSIC)Campus de Montegancedo UPMPozuelo de Alarcon(Madrid)Spain Departamento de Biotecnologıa-Biología Vegetal Escuela Técnica Superior de Ingenierıa AgronomicaAlimentarıa y de BiosistemasUPMMadridSpain Centro de Investigaciones Biologicas Margarita Salas Consejo Superior de Investigaciones Científicas(CSIC)Ramiro de Maeztu 928040 MadridSpain Misión Biológica de Galicia Consejo Superior de Investigaciones Científicas(CSIC)Campus de Montegancedo UPMPozuelo de Alarcón(Madrid)Spain

Beyond their function as structural barriers,plant cell walls are essential elements for the adaptation of plants to environmental *** walls are dynamic structures whose composition and integrity can be altered in response to environmental challenges and developmental *** wall changes are perceived by plant sensors/receptors to trigger adaptative responses during development and upon stress *** cell wall damage caused by pathogen infection,wounding,or other stresses leads to the release of wall molecules,such as carbohydrates(glycans),that function as damage-associated molecular patterns(DAMPs).DAMPs are perceived by the extracellular ectodomains(ECDs)of pattern recognition receptors(PRRs)to activate pattern-triggered immunity(PTI)and disease ***,glycans released from the walls and extracellular layers of microorganisms interacting with plants are recognized as microbe-associated molecular patterns(MAMPs)by specific ECD-PRRs triggering PTI *** number of oligosaccharides DAMPs/MAMPs identified that are perceived by plants has increased in recent ***,the structural mechanisms underlying glycan recognition by plant PRRs remain ***,this knowledge is mainly focused on receptors of the LysM-PRR family,which are involved in the perception of various molecules,such as chitooligosaccharides from fungi and lipo-chitooligosaccharides(i.e.,nod/MYC factors from bacteria and mycorrhiza,respectively)that trigger differential physiological ***,additional families of plant PRRs have recently been implicated in oligosaccharide/polysaccharide *** include receptor kinases(RKs)with leucine-rich repeat and Malectin domains in their ECDs(LRR-MAL RKs),Catharanthus roseus RECEPTOR-LIKE KInASE 1-LIKE group(CrRLK1L)with Malectin-like domains in their ECDs,as well as wall-associated kinases,lectin-RKs,and *** characterization of structural basis of glycans recogniti

关键词： Arabidopsis thaliana cell wall damage-associated molecular patterns DAMPs disease resistance glycans oligosaccharides pattern-triggered immunity PTl pattern recognition receptor PRRs

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Adipose-derived mesenchymal stem/stromal cells:from the lab bench to the basic concepts for clinical translation

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BIOCELL 2018年第3期42卷 67-77页

作者： Yesica Romina FROnTInI-LóPEZ Aldana Daniela GOJAnOVICH Diego MASOnE Diego Martín BUSTOS marina UHART Laboratorio de Integración de Señles Celulares.IHEM-COnICET Universidad Nacional de Cuyo MendozaArgentina Facultad de Ingeniería Universidad Nacional de CuyoMendozaArgentina Facultad de Ciencias Exactas y naturales Universidad Nacional de CuyoMendozaArgentina

In the last years,much work has shown that the most effective repair system of the body is represented by stem cells,which are defined as undifferentiated precursors that own unlimited or prolonged self-renewal ability,which also have the potential to transform themselves into various cell types through *** tissues that form the body contain many different types of somatic cells,along with stem cells that are called‘mesenchymal stem(or stromal)cells’(MSC).In certain circumstances,some of these MSC migrate to injured tissues to replace dead cells or to undergo differentiation to repair *** discovery of MSC has been an important step in regenerative medicine because of their high ***,the finding of a method to isolate MSC from adipose tissue,so called‘adipose-derived mesenchymal stem cells’(ASC),which share similar differentiation capabilities and isolation yield that is greater than other MSC,and less bioethical concerns compared to embryonic stem cells,have created self-praised publicity to procure almost any treatment with ***,we review the current techniques for isolation,culture and differentiation of human ASC(hASC),and describe them in *** also compile some advantages of the hASC over other stem cells,and provide some concepts that could help finding strategies to promote their therapeutic efficiency.

关键词： hASC Tissue regeneration Cell therapy

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Does the Dzungarian racerunner(Eremias dzungarica Orlova,Poyarkov,Chirikova,nazarov,Munkhbaatar,Munkhbayar&Terbish,2017)occur in China?Species delimitation and identification with DnA barcoding and morphometric analyses

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Zoological Research 2021年第3期42卷 287-293页

作者： Jin-Long Liu Tatjana n.Dujsebayeva marina A.Chirikova Xiong Gong Da-Jiang Li Xian-Guang Guo Chengdu Institute of Biology Chinese Academy of SciencesChengdu 610041China Institute of Zoology of Republic of Kazakhstan Almaty 050060Kazakhstan

The Eremias multiocellata-przewalskii species complex is a viviparous group in the genus Eremias,and a well-known representative of taxonomically complicated *** this complex,a new ***(Orlova et al.,2017)-has been described recently from western Mongolia and eastern Kazakhstan,with an apparent distribution gap in northwestern *** this study,we used an integrative taxonomic framework to address whether *** indeed occurs in *** specimens previously classified as *** were collected in eastern Kazakhstan and the adjacent Altay region in *** cytochrome c oxidase I(COI)barcodes were sequenced and compiled with those from Orlova et al.(2017)and analyzed with the standard and diverse barcoding techniques.

关键词： China. eastern northwestern

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SUPPORTED ZIEGLER-nATTA CATALYSTS FOR ETHYLEnE SLURRY POLYMERIZATIOn AnD COnTROL OF MOLECULAR WEIGHT DISTRIBUTIOn OF POLYETHYLEnE

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Chinese Journal of Polymer Science 2008年第5期26卷 553-559页

作者： Vladimir Zakharov Ludmila Echevskaya Tatiana Mikenas Mikhail Matsko Andrey Tregubov marina Vanina marina nikolaeva Boreskov Institute of Catalysis Novosibirsk 630090Russia

The effect of chemical composition of highly active supported Ziegler-natta catalysts with controlled morphology on the MWD of PE has been *** was shown the variation of transition metal compound in the MgCl_2-supported catalyst affect of MWD of PE produced in broad range:Vanadium-magnesium catalyst(VMC)produce PE with broad and bimodal MWD(M_w/M_n=14-21).MWD of PE,produced over titanium-magnesium catalyst(TMC)is narrow or medium depending on Ti content in the catalyst(M_w/M_n=3.1-4.8).The oxidation ...

关键词： Polyethylene(PE) Vanadium magnesium catalyst(VMC) Titanium magnesium catalyst(TMC) Gel permeation chromatography(GPC) Molecular weight distribution(MWD).

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Pseudogamous Apomixis in Maize and Sorghum in Diploid-Tetraploid Crosses

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Phyton-International Journal of Experimental Botany 2019年第4期88卷 389-401页

作者： marina Tsvetova Lev Elkonin Yulia Italianskaya Agricultural Research Institute of South-East Region Department of BiotechnologySaratov410010Russia

Apomictic seed development is a complex process including formation of unreduced embryo sac,parthenogenetic embryo development from the egg cell,and endosperm formation either autonomously,or due to fertilization of polar nuclei by the sperm(under pseudogamous form of apomixis).In the latter case,an obstacle to the normal endosperm development is disturbance of maternal(m)-to-paternal(p)genomic ratio 2m:1p that occurs in the cases of pollination of unreduced embryo sac with haploid *** of tetraploid pollinators can overcome this problem because in such crosses maternal-to-paternal genomic ratio is 4m:2p that provides formation of kernels with plump *** tetraploid lines as pollen parents we observed formation of plump kernels on the ears and panicles of diploid maize and sorghum *** kernels had hybrid endosperm and diploid maternal-type embryo or hybrid embryo with different ploidy level(2n,3n,4n).The frequencies of plump kernels on the ear ranged from 0.2-0.3%to 5.7-6.2%counting from the number of ***-type plants were found in two maize lines,their frequency varying from 10.7 to 37.5%of the progeny *** CMS-lines of sorghum pollinated with tetraploid sorghum accessions,the frequency of plump kernels ranged from 0.6 to 14.0%counting from the number of ovaries;the frequency of maternal-type plants varied from 33.0 up to 96.1%.The hybrid nature of endosperm of the kernels that gave rise to maternal-type plants has been proved by marker gene expression and by SDS-electrophoresis of endosperm *** data testify to variable modes of seed formation under diploid×tetraploid crosses in maize and sorghum both by amphi-and by ***,usage of tetraploid pollinators might be a promising approach for isolation of apomixis in maize and sorghum accessions.

关键词： Interploidy crosses genomic balance unreduced embryo sac pseudogamous apomixis Zea mays L Sorghum bicolor(L.)Moench

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Calcitriol induces post-thawed bovine sperm capacitation

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BIOCELL 2023年第5期47卷 1135-1143页

作者： AnA CECILIA LIAUDAT FRAnCISCA EBEL BIAnCA AnA OPIZZO marina AURORA GOnZALEZ DAMIÁn BLOIS PABLO BOSCH nAnCY RODRIGUEZ Departamento de Biología Molecular Instituto de Biotecnología Ambiental y Salud(INBIAS)Río Cuarto5800Argentina

Background:Capacitation is a set of physiological changes sperms undergo to acquire fertilizing *** vivo,this process is directly associated with high calcium levels in sperm ***,the vitamin D hypercalcemic metabolite,is related to human sperm motility,capacitation,and acrosome *** work aimed to study the effect of calcitriol on bull sperm quality parameters and ***:One million freezethawed spermatozoa were obtained from different bulls and treated with 20 nM of calcitriol for 30 *** cells(negative control)and treated ones with calcitriol or heparin(100μg/mL,positive capacitation control)were evaluated for motility,viability,and functional ***(70μM,30 min)treatment was included as a reactive oxygen species(ROS)positive sperm ***:The results elucidated that sperm exposed to 20 nM calcitriol showed higher viability,vigor,and capacitation than their positive and negative *** percentage of sperm with intact plasma and acrosome membranes,mitochondrial membrane potential(ΔΨm),and phosphatidylserine externalization was similar in all the conditions evaluated,while ROS production was higher with heparin and menadione-treated groups than the calcitriol group or negative ***:Our results indicate that calcitriol induces the capacitation of thawed bull spermatozoa and maintains acceptable values of progressive motility,viability,and vigor without altering key biological parameters such as redox status,ΔΨm,and cell death.

关键词： Bovine Sperm capacitation Calcitriol Cell viability Plasma membrane integrity Reactive oxygen species

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Video-rate multimodal multiphoton imaging and three-dimensional characterization of cellular dynamics in wounded skin

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Journal of Innovative Optical Health Sciences 2020年第2期13卷 70-80页

作者： Joanne Li Madison n.Wilson Andrew J.Bower marina Marjanovic Eric J.Chaney Ronit Barkalifa Stephen A.Boppart Department of Bioengineering University of Illinois at Urbana-Champaign Urbana ILU.S.A Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign Urbana ILU.S.A Beckman Institute for Advanced Science and Technology University of Illinois at Urbana-Champaign Urbana ILU.S.A Carle Illinois College of Medicine University of Illinois at Urbana-Champaign Urbana ILU.S.A

To date,numerous studies have been performed to elucidate the complex cellular dynamics in skin diseases,but few have attempted to characterize these cellular events under conditions similar to the native *** address this challenge,a three-dimensional(3D)multimodal analysis platform was developed for characterizing in vivo cellular dynamics in skin,which was then utilized to process in vivo wound healing data to demonstrate its *** attention is focused on in vivo biological parameters that are difficult to study with ex vivo analysis,including 3D cell tracking and techniques to connect biological information obtained from different imaging *** results here open new possibilities for evaluating 3D cellular dynamics in vivo,and can potentially provide new tools for characterizing the skin microenvironment and pathologies in the future.

关键词： Cellular dynamics multimodal imaging multiphoton microscopy

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Primary malignant tumors of bone surface:a review with emphasis in differential diagnosis

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Journal of Cancer Metastasis and Treatment 2020年第1期6卷 632-646页

作者： marina Pacheco Alberto Righi Department of Pathology IRCCS Istituto Ortopedico RizzoliBologna 40136Italy

Surface tumors of the bone are broadly defined as a diverse group of osteogenic and chondrogenic benign and malignant neoplasms that arise adjacent to the outer surface of cortical *** may be a cause of diagnostic difficulty due to a degree of histological overlap,rarity,and *** this review we summarize the different histological types of primary malignant tumors of bone surface,namely,secondary peripheral chondrosarcoma,periosteal chondrosarcoma,parosteal osteosarcoma,dedifferentiated parosteal osteosarcoma,periosteal osteosarcoma,and high-grade surface *** provide a comprehensive updated review of their pathogenesis and highlight radiological,macroscopic,and histopathological features and recently available ancillary diagnostic tools that may aid in the differential diagnosis.

关键词： Secondary peripheral chondrosarcoma periosteal chondrosarcoma parosteal osteosarcoma periosteal osteosarcoma high-grade surface osteosarcoma

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