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Age and sex differences in niche use at molt and its effect on plumage coloration characteristics in a bird

Current Zoology 2019年第3期65卷 251-260页

作者： Emilio PAGANI-NUNEZ Craig R.A.BARNETT juan carlos SENAR State Key Laboratory of Biocontrol Department of Ecology/School of Life Sciences Sun Yat-sen University Guangzhou China Department of Zoology Graduate School of Science University of Kyoto Kitashirakawaoiwake-cho Sakio-ku Kyoto Japan Natural History Museum of Barcelona Barcelona Spain

Bird plumage is often very colorful and can communicate the quality of the bearer to conspecifics. These plumage-based signals of quality are composed of multiple pigments (e.g., melanin and carote no ids). Therefore, sex and age classes, which often show marked differe nces in plumage coloration, may have different dietary needs for the different plumage components and this might promote pref ere nces for differe nt dietary niches at different molting stages. However, no study has addressed the role that changes in niche use play in the expression of multiple component plumage signals in birds. We used stable isotope analysis to test the hypothesis that niche use is related to age and sex and to differently cultured plumage patches, yellow carotenoid-based and black melanin-based, in great tits Parus major. We recorded high niche overlap between plumage patches, although δ15N was higher in black than yellow plumage. Niche overlap was relatively low for age classes and relatively high for sex classes, and age classes showed a contrasting pattern of niche overlap between carotenoid- and melanin-based plumages. Moreover,δ13C, but not δ15N, had a significant negative relationship with carotenoid-based plumage, which was only apparent in juveniles. Take n together, our results demonstrate that n iche use had a moderate in fluence on plumage coloration characteristics of great tit individuals, mostly associated with δ13C rather than with δ15N and with age rather than with sex. Therefore, our study is significant because it confirms the releva nee of n iche use duri ng orn ame nt production in free-livi ng birds.

关键词： carotenoids great tits melanin multiple ornaments niche overlap stable isotopes

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Topological Minors in Bipartite Graphs

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Acta Mathematica Sinica,English Series 2011年第11期27卷 2085-2100页

作者： Camino BALBUENA Martin CERA Pedro GARCIA-VAZQUEZ juan carlos VALENZUELA Departament de Matematica Aplicada III Universitat Politecnica de Catalunya C/ Jordi Girona 1-3 （ Edifici C2 Despatx 302） 08034 Barcelona Spain Departamento de Matemdtica Aplicada I Universidad de SeviUa EUIT Agrlcola Ctra. Utrera Kin. 1 41013 Sevilla Spain Departamento de Matemdtica Aplicada I Universidad de Sevilla ETS Arquitectura Avda. Reina Mercedes 2 41012 Sevilla Spain Departamento de Matemdticas Universidad de Cddiz EPS Algeciras Avda. Ramdn Puyol s/n 11202 Algeciras Spain

For a bipartite graph G on m and n vertices, respectively, in its vertices classes, and for integers s andt such that 2≤ s ≤ t, 0≤ m-s ≤ n-t, andre＋n≤ 2s＋t-1, we prove that if G has at least mn- （2（m - s）＋ n - t） edges then it contains a subdivision of the complete bipartite K（s,t） with s vertices in the m-class and t vertices in the n-class. Furthermore, we characterize the corresponding extremal bipartite graphs with mn- （2（m - s）＋ n - t ＋ 1） edges for this topological Turan type problem.

关键词： Bipartite graphs extremal graph theory topological minor

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Adenine base editing disease mutations in to mimic or correcl rodents

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Protein & Cell 2018年第9期9卷 752-753页

作者： Ruotong Ren juan carlos Izpisua Belmonte Guang-Hui Liu Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric Disorders Xuanwu Hospital of Capital Medical University Beijing 100053 China National Laboratory of Biomacromolecules CAS Center for Excellence in Biomacromolecules Institute of Biophysics Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China Gene Expression Laboratory Salk Institute for Biological Studies 10010 North Torrey Pines Road La Jolla California 92037 USA Institute of Stem cell and Regeneration Chinese Academy of Sciences Beijing 100101 China

Cytidine base editors （CBEs, rAPOBECI-nCas9-UGI） and adenine base editors （ABEs, TadA-TadA＊-nCas9） are newly developed genome-editing tools that have enabled highly efficient base conversions （CoG to T·A or A·T to G·C） at designated target sites （Komor et al., 2016; Gaudelli et al., 2017）. Both types of base editors enzymatically catalyze deamination of target bases and respectively replace C with U or A with I.

关键词： Basic Editing Adenine Base GSD II Hereditary Tyrosinemia Type Target Site Identification

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Denitrification-nitrification process in permeable coastal sediments: An investigation on the effect of salinity and nitrate availability using flow-through reactors

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Acta Oceanologica Sinica 2021年第9期40卷 1-12页

作者： Shan Jiang Mark Kavanagh juan Severino Pino Ibánhez carlos Rocha State Key Laboratory of Estuarine and Coastal Research East China Normal University School of Natural Sciences Trinity College Dublin Trinity Centre for the Environment School of Natural Sciences Trinity College Dublin Instituto de Investigacións Mari?as Consejo Superior de Investigaciones Científicas

Permeable coastal sediments act as a reactive node in the littoral zone,transforming nutrients via a wide range of biogeochemical *** rates are controlled by abiotic factors,e.g.,salinity,temperature or solute ***,a series of incubation experiments,using flow-through reactors,were conducted to simulate the biogeochemical cycling of nitrate (NO3~?) and phosphorus (P) in permeable sediments under differentNO3~?availability conditions (factor I) along a salinity gradient (admixture of river and seawater,factor II).In an oligotrophic scenario,i.e.,unamendedNO3~?concentrations in both river and seawater,sediments acted as a permanent net source ofNO3~?to the water *** peak production rate occurred at an intermediate salinity(20).IncreasingNO3~?availability in river water significantly enhanced netNO3~?removal rates within the salinity range of 0 to 30,likely via the denitrification pathway based on the sediment microbiota *** this scenario,the most active removal was obtained at salinity of *** both river and seawater were spiked with NO3~?,the highest removal rate switched to the highest salinity (36).It suggests the salinity preference of theNO3~?removal pathway by local denitrifiers (e.g.,Bacillus and Paracoccus) and thatNO3~?removal in coastal sediments can be significantly constrained by the dilution relatedNO3~?*** with the obtained variation forNO3~?reactions,permeable sediments acted as a sink of soluble reactive P in all treatments,regardless of salinity andNO3~?input concentrations,indicating a possibility of P-deficiency for coastal water from the intensive cycling in permeable ***,the net production of dissolved organic carbon (DOC) in all treatments was positively correlated with the measuredNO3~?reaction rates,indicating that the DOC supply may not be the key factor forNO3~?removal rates due to the consumption by intensive aerobic *** the intensive pr

关键词： NO − 3 production and removal flow-through reactors salinity stable isotopes permeable sediments

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Chronic hepatitis C in hemodialysis patients:Prevalence and liver fibrosis impact in the National Center for Renal Health in Peru

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iLIVER 2022年第3期1卷 141-144页

作者： P.Martin Padilla-Machaca Eduardo Luna-Victoria Ada Cabrera juan-carlos Gómez-De la Torre Rocio Galloso Pedro Montes Guillermo Almenara National Hospital EsSaludLimaPerú National University of San Marcos LimaPerú National Renal Health Center EsSaludLimaPerú Laboratorio Clínico Roe LimaPerú Asociacion Peruana para el Estudio del Hígado(APEH) LimaPerú

Background:Hepatitis C(HCV)remains a serious public health problem in high-risk persons such as patients on chronic *** aimed to estimate the serological prevalence of HCV,the HCV viral load and genotype,and liver fibrosis stage among patients on chronic hemodialysis at the National Renal Health Center in Lima,***:From June 2019 to March 2021,all patients who received chronic hemodialysis were invited to *** who provided written informed consent were *** with HCV-positive serology underwent determination of HCV viral *** from subjects with detectable viral load,underwent determination of HCV ***,HCV infected subjects underwent determination of liver fibrosis using transitional elastography(Fibroscan 402):Metavir score:F0-F1:2.5-7.5 kPa,F2:7.6-9.5 Kpa,F3:9.6-12 Kpa,F4(Cirrhosis):12.1-75 ***:Of the 303 subjects invited to participate,174(57.4%)subjects gave their written *** age was 52 years(range 22-91)and 116(66.6%)were *** serology was positive in 35.1%of patients(61/174);however,the prevalence of positive serology with detectable viral load was 20.11%(35/174).Genotype 1a was the most prevalent(85%).The majority(83.6%)of subjects with detectable viral load had values lower than 800.000 IU/***-nine of those 35 subjects underwent elastography evaluation,and 13(44.8%)of them were found to have stage F2-F4 ***:The prevalence of HCV at the largest reference center for hemodialysis in Lima remains high,with GT1a predominance,viral load usually below 800,000 IU/mL and significant liver fibrosis.

关键词： Hepatitis C Hemodialysis Liver fibrosis HCV genotype

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Migration of intra-aortic balloon pump causing obstruction of the superior mesenteric artery

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Journal of Geriatric Cardiology 2022年第11期19卷 928-929页

作者： Sharan Malkani Jose Ruiz Smruti Desai Smit Paghdar Parag C.Patel juan carlos Leoni Moreno Melissa Lyle Maedeh Ganji Daniel Yip Rohan M.Goswami Division of Transplant Cardiology Mayo ClinicJacksonvilleFLUSA Division of Cardiology First Coast Heart&VascularJacksonvilleFLUSA

Axillary intra-aortic balloon pump(IABP)used has increased in the recent few years after UNOs allocation system ***’s design and counterpulsation mechanism is highly regarded for its safety profile,simplicity and relative ease in management and ***,despite continuous innovative efforts,the potential for complications still *** Benchmark registry is widely regarded as the tool for monitoring the evolving practice of *** most common complications reported are balloon perforation,bleeding,migration,limb *** continuous innovative efforts,the potential for complications still exists.

关键词： balloon IABP pump

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Unravelling host-mediated effects on hemiparasitic Mexican mistletoe Psittacanthus calyculatus(DC.)*** traits linked to mutualisms with pollinators and seed dispersers

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Journal of Plant Ecology 2018年第6期11卷 827-842页

作者： Sandra Rodríguez-Mendieta carlos Lara juan Francisco Ornelas Centro de Investigación en Ciencias Biológicas Universidad Autónoma de Tlaxcalakm 10.5 Carretera San Martín Texmelucan-TolucaSan Felipe IxtacuixtlaTlaxcala 90120Mexico Departamento de Biología Evolutiva Instituto de EcologíaA.C.(INECOL)Carretera antigua a Coatepec 351XalapaVeracruz 91080Mexico

Aims While the influence of mistletoe-host interactions on each other’s evolution is well-recognized,the role of interactions between mis-tletoes and its mutualistic pollinators and seed dispersers mediated by host species is relatively *** Here,we examine the effects of host species(Mexican hawthorn Crataegus mexicana DC,black cherry Prunus serotina Ehrh.,leather-leaf Mexican oak Quercus crassipes Bonpl.)on flower morphology,nectar production,pollinator visitation rate and female reproduct-ive fitness in hemiparasitic Mexican mistletoe Psittacanthus caly-culatus(DC.)***(Loranthaceae)populations at three different *** first measured the lengths of corolla,style,stamen,exerted stamen and anther,the length and width of the ovary and nectar availability for mistletoe flowers in natural ***,we evaluated flower visitation and measured(length and width)and weighed the fruits and its seeds of mistletoes growing on each of the three host ***,we evaluated the effects of host species,location and flower traits on fruit or seed size variation(both as proxies of reproductive fitness).Important Findings We found mistletoes growing on natural hosts *** and *** produced larger flowers,fruits and seeds than mistle-toes on cultivated ***,these differences varied across *** amount of available nectar and hummingbird vis-itation rates in flowers of mistletoes on *** was higher at the three sites than in flowers of mistletoes on *** or *** effects of host species,study site and floral trait covariates affected significantly all fitness measures,indicating that mistletoes’reproductive fitness is affected differently depending on the host species and their site of *** host-associated differ-ences in reproduction might have implications for interactions with mutualistic vectors.

关键词： floral and fruit traits hosts hummingbirds local host adaptation mistletoes nectar parasitic plants pollination Psittacanthus

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Interaction of piRNA-like sequences from the 3′-UTR of SARS-CoV-2 with mRNA regions

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Genes & Diseases 2023年第6期10卷 2282-2284页

作者： Laura Pérez-Campos Mayoral María Teresa Hernández-Huerta carlos Romero Díaz carlos Alberto Matias-Cervantes Eduardo Pérez-Campos Mayoral Margarito Martínez Cruz juan de Dios Ruiz-Rosado Edgar Gustavo Ramos Martínez Marco Antonio Sánchez Medina Eduardo Pérez-Campos Research Center Faculty of Medicine UNAM-UABJOAutonomous University“Benito Juárez”of Oaxaca(UABJO)Oaxaca 68020Mexico CONACyT Faculty of Medicine and Surgery.Autonomous University“Benito Juárez”of Oaxaca(UABJO)Oaxaca 68020Mexico National Technology of Mexico(TecNM)/IT Oaxaca Oaxaca de JuárezOaxaca 68030Mexico The Research Institute at Nationwide Children's Hospital Columbus 43205USA Facultad de Química Universidad Nacional Autónoma de MéxicoCoyoacán 04510Mexico

Piwi-interacting RNAs(piRNAs of 26-32 nt in length)regulate gene expression,epigenetics,and transcriptional and post-transcriptional processes.1 In humans,piRNAs are expressed in germline and somatic tissues,and generally have a uracil at the 5'-end(position+1),an adenine at the+10 position,and are 2'-0 methylated at the 3'-end.2 Onice piRNAs form the RNA-induced silencing complex(RISC)with PIWl proteins,they serve as guides to find their complementary sequences of the target mRNA,thus initiating their *** Wuhan patient's genome is approximately 265 nucleotides(nts)in its 3'-UTR;piRNAs-like sequences have been reported in this region.3 Our objective was to search,through bioinformatics,for mRNA sequences that were homologous to the reverse complementary of the previously reported piRNA-like sequences from the 3'-UTR of SARS-Cov-2,3 and identify the possible interaction between them.

关键词： sequences complementary initiating

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Influence of V(C,N) Precipitates on Microstructure and Mechanical Properties of Continuous Cooled C-Mn-V

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Journal of Iron and Steel Research(International) 2011年第S1期18卷 266-270页

作者： carlos Garcia-Mateo carlos Capdevila juan Cornide Jesus Chao Francisca G Caballero carlos Garcia de Andres Materalia Research Group Department of Physical Metallurgy Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC)Avda.Gregorio del Amo8 E-28040 MadridSpain

The effect of chemical composition and processing parameters on the formation of acicular ferrite and/or bainite has been *** particular,this paper deals with the influence that N through its combination with V,as V(C,N) precipitates,has on the decomposition of ***,the intragranular nucleation potency of V(C,N) precipitates is analyzed through the continuous cooling transformation diagrams (CCT) of two C-Mn-V steels with different contents of *** reported in this work allow us to conclude that acicular ferrite can only be achieved alloying with vanadium and nitrogen,meanwhile bainite is promoted in steels with a low level of *** is concluded that higher strength values are obtained in acicular ferrite than in bainitic steel but a similar brittle-ductile transition temperature (BDT),and lower values of impact absorbed energy (KV) has been recorded in nitrogen-rich steel.

关键词： acicular ferrite bainite vanadium precipitates mechanical properties

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Hyperthermia differentially affects specific human stem cells and their differentiated derivatives

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Protein & Cell 2022年第8期13卷 615-622页

作者： Si Wang Fang Cheng Qianzhao Ji Moshi Song Zeming Wu Yiyuan Zhang Zhejun Ji Huyi Feng juan carlos Izpisua Belmonte Qi Zhou Jing Qu Wei Li Guang-Hui Liu Weiqi Zhang Advanced Innovation Center for Human Brain Protection National Clinical Research Center for Geriatric Disorders Xuanwu Hospital Capital Medical University 100053 Beijing China Aging Translational Medicine Center International Center for Aging and Cancer Xuanwu Hospital Capital Medical University 100053 Beijing China Chongqing Renji Hospital University of Chinese Academy of Sciences 400062 Chongqing China National Laboratory of Biomacromolecules CAS Center for Excellence in Biomacromolecules Institute of Biophysics Chinese Academy of Sciences 100101 Beijing China University of Chinese Academy of Sciences 100049 Beijing China State Key Laboratory of Membrane Biology Institute of Zoology Chinese Academy of Sciences 100101 Beijing China Institute for Stem Cell and Regeneration Chinese Academy of Sciences 100101 Beijing China Beijing Institute for Stem Cell and Regenerative Medicine 100101 Beijing China State Key Laboratory of Stem Cell and Reproductive Biology Institute of Zoology Chinese Academy of Sciences 100101 Beijing China Gene Expression Laboratory Salk Institute for Biological Studies La Jolla CA USA CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of Genomics Chinese Academy of Sciences 100101 Beijing China China National Center for Bioinformation 100101 Beijing China

Dear Editor,The human body operates optimally at a core temperature of 37 degrees *** at this temperature is essential for cellular and physiological functions(Cheshire,2016).However,infectious diseases,inflammation,injury,neoplasia,and elevated climate temperature can cause a regulated rise in body core temperature,i.e.,fever(Pasi-khova et al,2017).Indeed,an acute or chronic increase in temperature leads to detrimental effects on vasculature by altering a number of indices of vascular structure and function(DuBose et al.,1998).

关键词： elevated inflammation acute

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