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Comparative analysis of two nonlethal methods for the study of the gut bacterial communities in wild lizards

Integrative Zoology 2023年第6期18卷 1056-1071页

作者： Mauricio HERNÁNDEZ sergio ancona Stephanie HEREIRA-PACHECO Aníbal HDÍAZ DE LA VEGA-PÉREZ Yendi E.NAVARRO-NOYA Doctorado en Ciencias Biológicas Centro de Tlaxcala de Biología de la ConductaUniversidad Autónoma de TlaxcalaTlaxcalaMexico Departamento de Ecología Evolutiva Instituto de EcologíaUniversidad Nacional Autónoma de MéxicoMexico CityMexico Estación Científica la Malinche Centro de Tlaxcala de Biología de la ConductaUniversidad Autónoma de TlaxcalaTlaxcalaMexico Consejo Nacional de Ciencia y Tecnología—Centro Tlaxcala de Biología de la Conducta Universidad Autónoma de TlaxcalaTlaxcalaMexico Laboratorio de Interacciones Bióticas Centro de Investigación en Ciencias BiológicasUniversidad Autónoma de TlaxcalaTlaxcalaMexico

Fecal samples or cloacal swabs are preferred over lethal dissections to study vertebrate gut microbiota for ethical reasons,but it remains unclear which nonlethal methods provide more accurate information about gut *** compared the bacterial communities of three gastrointestinal tract(GIT)segments,that is,stomach,small intestine(midgut),and rectum(hindgut)with the bacterial communities of the cloaca and feces in the mesquite lizard Sceloporus *** hindgut had the highest taxonomic and functional alpha diversity,followed by midgut and feces,whereas the stomach and cloaca showed the lowest *** taxonomic assemblages of the GIT segments at the phylum level were strongly correlated with those retrieved from feces and cloacal swabs(rs>0.84 in all cases).The turnover ratio of Amplicon Sequence Variants(ASVs)between midgut and hindgut and the feces was lower than the ratio between these segments and the *** than half of the core-ASVs in the midgut(24 of 32)and hindgut(58 of 97)were also found in feces,while less than 5 were found in the *** the ASVs level,however,the structure of the bacterial communities of the midgut and hindgut were similar to those detected in feces and *** findings suggest that fecal samples and cloacal swabs of spiny lizards provide a good approximation of the taxonomic assemblages and beta diversity of midgut and hindgut microbiota,while feces better represent the bacterial communities of the intestinal segments at a single nucleotide variation level than cloacal swabs.

关键词： animal microbiome cloacal swabs fecal samples intestinal tract reptile gut microbiome

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DNA metabarcoding reveals seasonal changes in diet composition across four arthropod-eating lizard species(Phrynosomatidae:Sceloporus)

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Integrative Zoology 2024年第3期19卷 480-495页

作者： Mauricio HERNÁNDEZ Stephanie HEREIRA-PACHECO Antton ALBERDI Aníbal H.DÍAZ DE LA VEGA-PÉREZ Arturo ESTRADA-TORRES sergio ancona Yendi E.NAVARRO-NOYA Doctorado en Ciencias Biológicas Centro Tlaxcala de Biología de la ConductaUniversidad Autónoma de TlaxcalaTlaxcalaMexico Estación Científica La Malinche Centro Tlaxcala de Biología de la ConductaUniversidad Autónoma de TlaxcalaTlaxcalaMexico Center for Evolutionary Hologenomics The Globe InstituteUniversity of CopenhagenCopenhagenDenmark Consejo Nacional de Ciencia y Tecnología-Centro Tlaxcala de Biología de la Conducta Universidad Autónoma de TlaxcalaTlaxcalaMexico Departamento de Ecología Evolutiva Instituto de EcologíaUniversidad Nacional Autónoma de MéxicoMexico CityMexico Laboratorio de Interacciones Bióticas Centro de Investigación en Ciencias BiológicasUniversidad Autónoma de TlaxcalaSan Felipe IxtacuixtlaTlaxcalaMexico

Diet composition and its ecological drivers are rarely investigated in coexisting closely related *** used a molecular approach to characterize the seasonal variation in diet composition in four spiny lizard species inhabiting a mountainous *** metabarcoding revealed that the lizards Sceloporus aeneus,***,***,and *** mostly consumed arthropods of the orders Hemiptera,Araneae,Hymenoptera,and *** terrestrial lizards *** and *** mostly predated ants and spiders,whereas the arboreal–saxicolous *** and saxicolous *** largely consumed grasshoppers and *** taxonomic and phylogenetic diversity of the prey was higher during the dry season than the rainy season,likely because reduced prey availability in the dry season forced lizards to diversify their diets to meet their nutritional *** and phylogenetic composition varied seasonally depending on the species,but only dietary composition varied with *** dietary turnover was greater in *** than in ***,suggesting site-specific seasonal variability in prey availability;no other differences among species were ***,which lives at the highest altitude in our study site,displayed interseasonal variation in diet *** differences were correlated with the species’feeding strategies and elevational distribution,which likely contributed to the coexistence of these lizard species in the studied geographic area and beyond.

关键词： arthropod-eating lizards diet breadth environmental barcoding mountainous ecosystem seasonal dietary shifts

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Ulcerative colitis and bullous pemphigoid:Direct association or a medication side effect:A case report

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World Journal of Clinical Cases 2025年第9期13卷 47-52页

作者： Gaelle-Christie Haddad Anthony El Dada sergio Sbeih Tony Kazzi Karam Karam Louis A Chaptini Department of Internal Medicine University of BalamandBeirut 100Lebanon Department of Medicine GastroenterologyUniversity of BalamandBalamand 100Lebanon Department of Medicine Digestive DiseasesYale School of MedicineNew HavenCT 06510United States

BACKGROUND Bullous pemphigoid(BP)is an autoimmune blistering skin *** is associated with other autoimmune disorders and the use of certain *** describe a case of BP in a patient with ulcerative colitis(UC)treated with *** SUMMARY A 38-year-old male patient with UC and a history of multiple flares was maintained on mesalamine with good clinical *** year after starting mesalamine,he sought medical care following the onset of a severe itchy rash of several weeks’duration with a recent appearance of skin bullae.A biopsy of the skin revealed subepidermal blistering dermatitis with focal eosinophilic *** immunofluorescence studies revealed linear IgG and C3 immune reactant deposits at the dermoepidermal junction,consistent with the diagnosis of *** therapy alleviated his ***,tapering prednisone led to re-eruption of the *** BP should be considered when patients with UC develop skin *** BP is not one of the extraintestinal manifestations of UC,there may be an association between these two *** treatment with mesalamine or other therapeutic agents plays a role in the development of BP remains unclear.

关键词： Bullous pemphigoid Ulcerative colitis Autoimmune disorders Skin manifestations in inflammatory bowel diseases Mesalamine Case report

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An Optimal Design Method Based on Small Amplitude Homogenization

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Chinese Annals of Mathematics,Series B 2015年第5期36卷 843-854页

作者： sergio GUTIERREZ Department of Structural and Geotechnical Engineering Pontificia Universidad Catolica de Chile

An optimal design method for two materials based on small amplitude homogenization is presented. The method allows to use quite general objective functions at the price that the two materials should have small contrasts in their relevant physical parameters. The following two applications are shown: Stress constrained compliance minimization and defect location in elastic bodies.

关键词： Homogenization Inverse problems Relaxation Stress concentration

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Molecular and crystal assembly inside the carbon nanotube:encapsulation and manufacturing approaches

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Advances in Manufacturing 2013年第3期1卷 198-210页

作者： sergio Manzetti Fjordforsk A.S. Institute of Science and Technology6896 FresvikNorway Van der Spoel Lab.Computational Systems and Biology Biomedical CentreUniversity of UppsalaP.O.Box 25675105 UppsalaSweden

Encapsulation of different guestspecies such as molecules and ions inside carbon nanotubes （CNTs） has been reported in the literatures during the last 15 years and repre sents an exciting development of nanoengineering of novel materials and composites. The reported nanocomposite mate rials show the semiconducting properties with potential applications in nanosensors, nanounits and nanocircuits as well as advanced energy transfer and storage properties, and encompass manufacturing for novel nanowires, nanoelectronic devices with properties designed with optoelectronic, spin tronic and nanomagnetic qualities. This review reports on a wide range of encapsulation references with particular focus on single molecules, atomic chains, metal halides and polymers encapsulated inside CNTs. The encapsulation methods and the chemical and physical qualities of these novel materials are crucial for the future manufacturing of novel innovations in nanotechnology, and represent therefore the current stateof theart of encapsulation methods in advanced manufacturing.

关键词： Encapsulation Carbon nanotubes (CNTs)Composites conductive Molecules

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State-of-the-art developments in metal and carbon-based semiconducting nanomaterials： applications and functions in spintronics, nanophotonics, and nanomagnetics

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Advances in Manufacturing 2017年第2期5卷 105-119页

作者： sergio Manzetti Francesco Enrichi Fjordforsk MS NanoFactory Midtun 6894 VangsnesNorway Computational Biology and Bioinformatics Uppsala University 75124 Uppsala Sweden Historical Museum of Physics and Research and Study Center Enrico Fermi 00184 Rome Italy Division of Materials Science Department of Engineering Sciences and Mathematics Lnlea University of Technology971 87 Lulea Sweden Department of Molecular and Nanosystems Sciences Ca' Foscari University of Venice 30172 Mestre VenetiaItaly Institute of Photonics and Nanotechnologies CSMFO Lab. &FBK-CMM IFN-CNR 38123 Povo Trento Italy

Nanomaterials composed of metals and metal alloys are the most valuable components in emerging micro- and nano-electronic devices and innovations to date. The composition of these nanomaterials, their quantum chemical and physical properties, and their production methods are in critical need of summarization, so that a complete state of the art of the present and future of nanotechnologies can be presented. In this review, we report on the most recent activities and results in the fields of spintronics, nanophotonics, and nanomagnetics, with particular emphasis on metallic nanoparticles in alloys and pure metals, as well as in organic combinations and in relation to carbon-based nanostructures. This review shows that the combinatory synthesis of alloys with rare metals, such as scandium, yttrium, and rare earths imparts valuable qualities to high-magnetic-field compounds, and provides unique properties with emphasis on nanoelectronic and computational components. In this review, we also shed light on the methods of synthesis and the background of spintronic, nanomagnetic, and nanophotonic materials, with applications in optics, diagnostics, nanoelectronics, and computational nanotechnology. The review is important for the industrial development of novel materials, and for summarizing both fabrication and manufacturing methods, as well as principles and functions of metallic nanoparticles.

关键词： Metal Alloy Nanoparticle Spintronics Nanophotonics Nanomagnetics Method Synthesis

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Moderate/severe traumatic brain injury as a trigger of chronic neurodegeneration in humans

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Neural Regeneration Research 2020年第7期15卷 1247-1248页

作者： sergio Bagnato Cristina Boccagni Unit of Neurophysiology and Unit for Severe Acquired Brain Injuries Rehabilitation Department Giuseppe Giglio Foundation

Traumatic brain injury(TBI)is the paradigmatic example of acute brain injury,defined as sudden and unexpected structural and/or functional damage to the *** western countries,TBI is a main cause of prolonged disability,and it is even more impactful because it very often affects young *** to past belief,the cerebral damage caused by TBI is not limited to the short temporal phase following the mechanical ***,moderate/severe TBI can trigger several mechanisms of neuronal damage that operate for months or years after the acute injury,potentially leading to neuronal loss and brain atrophy.

关键词： acute damage injury

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Gorenstein injective sheaves

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Frontiers of Mathematics in China 2017年第1期12卷 87-95页

作者： sergio ESTRADA Alina IACOB Departamento de Matem~ticas Universidad de Murcia Murcia 30100 Spain Department of Mathematical Sciences Georgia Southern University Statesboro GA 3O460 USA

We define Gorenstein injective quasi-coherent sheaves, and prove that the notion is local in case the scheme is Gorenstein. We also give a new characterization of a Gorenstein scheme in terms of the total acyclicity o... 详细信息

关键词： Gorenstein injective Noetherian scheme

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Reactive pathways toward parasitic release of singlet oxygen in metal-air batteries

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npj Computational Materials 2021年第1期7卷 1135-1142页

作者： Adriano Pierini sergio Brutti Enrico Bodo Department of Chemistry University of Rome“La Sapienza”RomeItaly GISEL—Centro di Riferimento Nazionale per i Sistemi di Accumulo Elettrochimico di Energia FirenzeItaly

The superoxide disproportionation reaction is a key step in the chemistry of aprotic metal oxygen batteries that controls the peroxide formation upon discharge and opens the way for singlet oxygen *** we clarify the energy landscape of the disproportionation of superoxide in aprotic media catalyzed by group 1A *** analysis is based on ab initio multireference computational methods and unveils the competition between the expected reactive path leading to peroxide and an unexpected reaction channel that involves the reduction of the alkaline *** channels lead to the release of triplet and singlet O_(2).The existence of this reduction channel not only facilitates singlet oxygen release but leads to a reactive neutral solvated species that can onset parasitic chemistries due to their well-known reducing ***,we show that the application of moderate overpotentials makes both these channels accessible in aprotic batteries.

关键词： properties release singlet

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Superattracting cycles for some Newton type iterative methods

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Science China Mathematics 2011年第3期54卷 539-544页

作者： AMAT sergio BUSQUIER Sonia NAVARRO Emilie PLAZA sergio Departamento de Matemtica Aplicada y Estadistica Universidad Politécnica de Cartagena Ecole Généraliste d'Ingénieurs de Marseille (EGIM) Departamento de Matemticas Facultad de Ciencias Universidad de Santiago de Chile

The paper is devoted to the analysis of certain dynamical properties of a family of iterative Newton type methods used to find roots of non-linear equations. We present a procedure for constructing polynomials in such a way that superattracting cycles of any prescribed length occur when these iterative methods are applied. This paper completes the study begun in Amat, Bermúclez, Busquier, et al., (2009).

关键词： iterative methods (super)attracting cycles dynamics

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