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  • Comparative Studies of Chemical Effects following Nuclear Reactions and Transformations on Metal Organic Phenyl Compounds; Etudes Comparatives des Effets Chimiques Induitspar les Reactions et les Transformations Nucleaires sur des Composes Phenylmetalliques; ; Estudios Comparativos de los Efectos Quimicos de las Reacciones y Transformaciones Nucleares en Compuestos Fenil-Organometalicos

    Energy Technology Data Exchange (ETDEWEB)

    Merz, E.; Riedel, H. J. [Kernforschungsanlage, Juelich, Federal Republic of Germany (Germany)

    concerne non seulement la categorie de produits typiques, mais aussi les rendements en pourcentage. Ainsi, les auteurs ont trouve, apres les reactions nucleaires sur le tetraphenylgermanium, plusieurs produits de recul de Ge et de Ga a caractere organometallique qu'il n'etait pas possible de deceler apres le processus de capture K dans le tetraphenylgermanium-{sup 68}Ge. La decroissance {beta}{sup -} dans le tetraphenylgermanium-{sup 77}Ge produit pratiquement les memes composes chimiques que ceux que l'on observe a la suite des reactions nucleaires. Toutefois, une augmentation notable de la fraction molecules generatrices marquees (retention) est typique de la transition {beta}{sup -}. Les resultats sont etudies a la lumiere de considerations theoriques sur la quantite d'energie cinetique transferee par le recul nucleaire a la molecule en reaction et l'excitation qui en resulte. Les auteurs emettent l'hypothese que le genre et la quantite de certaines nouvelles especes radioactives produites lors des evenements nucleaires sont fonction moins de la nature et de la concentration des fragments de recul primaires que des ions, des radicaux et des defauts de reseau induits dans les matieres irradiees par les effets de recul secondaires (interactions elastiques et inelastiques) , y compris l'influence particuliere de l'oxygene. (author) [Spanish] Los autores estudiaron los efectos quimicos producidos por atomos de retroceso de gran energia procedentes de reacciones nucleares en solidos y liquidos basandose en una amplia comparacion de los productos formados por los procesos (n, {gamma}) y (n,2n) en los compuestos fenilmetalicos de germanio, estano, cobre, arsenico y antimonio. Ademas, compararon los productos radiactivos de retroceso formados como consecuencia de los procesos de captura K en {sup 68}Ge-tetrafenilo con los resultados obtenidos mediante el proceso (n, {gamma}) en Ga-trifenilo y el proceso (n,p) en Ge-tetrafenilo. Por ultimo, estudiaron tambien la transicion {beta

  • Épidémiologie de l'intoxication par envenimation chez les enfants

    African Journals Online (AJOL)

    Introduction: L'intoxication par envenimation est l'ensemble des manifestations locales et générales induitespar la pénétration dans l'organisme d'une substance toxique produite par un animal venimeux. Le but de notre travail était d'étudier les signes cliniques des intoxications par envenimation chez les enfants de 0 à 15 

  • Intense pulsed sources of ions and electrons produced by lasers; Sources pulsees intenses d'ions et d'electrons produites parlaser

    Energy Technology Data Exchange (ETDEWEB)

    Bourrabier, G [Centre de Recherche de la C.S.F., Corbeville (France); Consoli, T; Slama, L [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    We describe a device for the acceleration of the plasma burst produced by focusing a laser beam into a metal target. We extract the electrons and the ions from the plasma. The maximum current is around amperes during few microseconds. The study of the effect of the kind of the target on the characteristics of the current shows the great importance of the initial conditions that is the ionisation potential of the target and the energy laser. (authors) [French] On decrit un dispositif destine a accelerer la bouffee de plasma produite par focalisation d'un faisceau laser sur une cible solide. On extrait du plasma les electrons et les ions. Le courant maximum atteint pres de amperes pendant quelques microsecondes. L'etude de l'effet de la nature de la cible sur les caracteristiques du courant collecte, met en evidence l'importance des conditions initiales (potentiel d'ionisation de la cible, energie du laser). (auteurs)

  • Evidence of a genetic instability induced by the incorporation of a DNA precursor marked with tritium; Mise en evidence d'une instabilite genetique induitepar l'incorporation d'un precurseur de L'ADN marque au tritium

    Energy Technology Data Exchange (ETDEWEB)

    Saintigny, Y.; Laurent, D.; Lahayel, J.B. [CEA Fontenay-aux-Roses, IRCM-LRTS, U - CEA/INSERM/Universites Paris 7 and Paris, 92 (France); Roche, St.; Meynard, D.; Lopez, B.S. [CEA Fontenay-aux-Roses, LMR - UMR - CEA/CNRS, Institut de Radiobiologie Cellulaire et moleculaire, Direction des Sciences du Vivant, 92 (France)

    The authors report a molecular geno-toxicology investigation which allowed molecular events induced par intracellular incorporation of tritium to be studied, and the genetic instability resulting from a chronic exposure even at low dose to be analysed. For this purpose, they developed cell models (hamster tumorous cells and human fibroblasts) in which they know how to incorporate given quantities of marked nucleotides in the DNA. They show that the incorporation of tritium, even with doses which are said to be non toxic, causes a prolonged exposure of the cell to a genotoxic stress, and maybe a genetic instability due to a too great number of recombination events

  • X-ray spectroscopic characterization of laser produced hot dense plasmas; Caracterisation par spectroscopie X de plasmas chauds et denses crees parlasers de puissance

    Energy Technology Data Exchange (ETDEWEB)

    Kontogiannopoulos, N

    In this work we performed experiments of emission and absorption spectroscopy of laser produced plasmas, to provide well characterized spectral data which permit to benchmark atomic physics codes. More precisely, we produced xenon and krypton plasmas in NLTE (non local thermodynamic equilibrium) conditions and studied their emission spectra. In a second experiment, we characterized the absorption spectra of zinc sulfide and aluminium plasmas in LTE (local thermodynamic equilibrium) bringdadabeer.com first two chapters give an outline of the theory involved in the study of the emission and absorption plasma spectroscopy. Chapter 1 describes the different atomic processes occurring in a plasma. The LTE and the NLTE statistics ruling the equilibrium of the atomic processes are presented. Then, we give a brief description of the different codes of plasma atomic physics used in the analysis of our experimental data, namely HULLAC, SCO and TRANSPEC/AVERROES. In Chapter 2 the macroscopic theory of the radiation transport through a plasma is given. We describe also the self-similar model of Basko and the view factor approach, which permits us to calculate the heating conditions of the absorption foils achieved in the interior of the spherical gold cavity. Chapter 3 gives a description of the instruments used for realizing the two experiments, as well as the technical characteristics of the LULI laser facility used to perform the experiments. Chapter 4 presents the experiment realized to characterize the emission spectra of the xenon and krypton plasmas in NLTE, as well the analysis of the experimental data with TRANSPEC/AVERROES. Finally, the experiment for measuring the absorption spectrum of the ZnS plasma mixture and the analysis of the experimental data with the code SCO are given in Chapter 5.

  • Towards precision measurements of parity violation in cesium: construction of a new experiment using an active detection method by induced emission; Vers des mesures precises de violation de la parite dans le cesium: construction d'une experience nouvelle utilisant une detection active par emission induite

    Energy Technology Data Exchange (ETDEWEB)

    Jacquier, Ph

    Experiments that show the breaking of parity invariance in atoms can be considered as valid tests of the electroweak theory complementary to those made at high energies. The accurate measurement of the weak charge of a cesium nucleus would bring useful information on radiative corrections. The experiment, that is proposed in this work concerns the strongly forbidden 6S-7S transition of cesium at nm, aims at reaching an accuracy of 1% for this measurement. Cesium atoms are first excited from 6S level to 7S level by a pulsed laser (10 ns) in the presence of a longitudinal electrical field. Then they are detected through induced emission by a probe laser set on 7S-6P(3/2) transition at {mu}m. The transitory amplification of the probe beam can be over %.The vapour presents a strong plane dichroism due to the alignment of 7S level through the linear polarization of the pumping beam. The weak interaction in the atom makes this alignment tilt by a small angle (1 to 10 micro-radians) that the measurement of the polarization of the amplified probe enables us to determine. In this work we have described the 3 steps we have passed through: the test with a transverse field and a continuous laser beam, the use of a pulsed laser, and the setting of a longitudinal configuration. Preliminary results show that the experiment will be useful and feasible.

  • Towards precision measurements of parity violation in cesium: construction of a new experiment using an active detection method by induced emission; Vers des mesures precises de violation de la parite dans le cesium: construction d'une experience nouvelle utilisant une detection active par emission induite

    Energy Technology Data Exchange (ETDEWEB)

    Jacquier, Ph

    Experiments that show the breaking of parity invariance in atoms can be considered as valid tests of the electroweak theory complementary to those made at high energies. The accurate measurement of the weak charge of a cesium nucleus would bring useful information on radiative corrections. The experiment, that is proposed in this work concerns the strongly forbidden 6S-7S transition of cesium at nm, aims at reaching an accuracy of 1% for this measurement. Cesium atoms are first excited from 6S level to 7S level by a pulsed laser (10 ns) in the presence of a longitudinal electrical field. Then they are detected through induced emission by a probe laser set on 7S-6P(3/2) transition at {mu}m. The transitory amplification of the probe beam can be over %.The vapour presents a strong plane dichroism due to the alignment of 7S level through the linear polarization of the pumping beam. The weak interaction in the atom makes this alignment tilt by a small angle (1 to 10 micro-radians) that the measurement of the polarization of the amplified probe enables us to determine. In this work we have described the 3 steps we have passed through: the test with a transverse field and a continuous laser beam, the use of a pulsed laser, and the setting of a longitudinal configuration. Preliminary results show that the experiment will be useful and feasible.

  • Automation on computers of the partial area method for the analysis of 's' neutron induced resonances. I. Without interference terms. (); Automatisation sur ordinateur de la methode des aires partielle dans l'analyse des resonances induitespar les neutrons 's'. I. sans terme d'interference. ()

    Energy Technology Data Exchange (ETDEWEB)

    Bianchi, G; Corge, C R [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    This report deals with numerical analysis of transmission resonances induced by 's' wave neutrons in time of flight experiments. The analysis method used is the partial area one. The only case treated here, in this first part, is the one when the interference term can be neglected. Programs and subroutines are thoroughly described, which determine from experimental raw data the resonant transmission, the partial areas, and the resonance parameters. (authors) [French] Le present rapport a pour objet l'analyse numerique sur ordinateur IBM , des resonances dues aux neutrons 's' dans les experiences de transmission par temps de vol, la methode d'analyse utilisee etant la methode des aires partielles. Dans cette premiere partie, seul a ete envisage le cas ou le terme d'interference peut etre neglige. On y trouvera une description detaillee des programmes et sous programmes elabores pour determiner les transmissions resonantes avec leur trace, a partir des donnees experimentales brutes, les aires partielles afferentes ainsi que les parametres caracteristiques des resonances. (auteurs)

  • Copolymerization of Ethylene Induced by Cobalt Gamma Radiation; Copolymerisation de l'ethylene induitepar des rayons gamma du cobalt; Sopolimerizatsiya ehtilena pod dejstviem gamma-izlucheniya ot istochnika ks'yali; Copolimerizacion del etileno inducida por las radiaciones gamma del cobalto

    Energy Technology Data Exchange (ETDEWEB)

    Steinberg, M.; Colombo, P. [Brookhaven National Laboratory, Long Island, NY (United States)

    }C et a des pressions initiales allant jusqu'a atm. On a procede aux experiences, en milieu statique, dans des systemes a deux phases, a l'exception du systeme ethylene-oxyde de carbone. La separation des copolymeres a ete obtenue par des methodes d'extraction par solvant et de precipitation fractionnee. L'identification a ete faite au moyen de la spectroscopic aux infrarouges. La composition a ete determinee par analyse elementaire. Les auteurs donnent une evaluation partielle de certains produits de la reaction, y compris les points de fusion cristalline, les densites, les caracteristiques de solubilite et les poids moleculaires. La copolymerisation de l'ethylene a ete etablie avec chacun des monomeres suivants : styrene, methacrylate de methyle, acetate de vinyle, acrylonitrile, acetate d'allyle, isobutylene, chlorotiifluoroethylene, transbutene-2, acrylate de methyle, isoprene, propylene, chlorure de vinyle, butene-1, cis-butene-2, oxyde de carbone, pyrrolidone de vinyle, methyle- vinyle-cetone et divinyle-benzene. Les auteurs ont trouve que les donnees experimentales obtenues dans l'etude du systeme ethylene-oxyde de carbone suivaient une forme lineaire de l'equation de composition du copolymere. Pour le rapport {alpha} des constantes de vitesse specifiques de l'oxyde de carbone et de l'ethylene, ils ont determine la valeur 22,0, ce qui montre que l'oxyde de carbone en tant que monomere est active a tel point qu'il se fixe a l'extremite d'une chaftie de radicaux libres d'ethylene 22 fois plus vite que ne le fait un monomere d'ethylene. (author) [Spanish] Los autores estudiaron la copolimerizacion del etileno, inducida por las radiaciones gamma, con una serie de diversos monometos, a 20{sup o}C y presiones iniciales de hasta atm. Los experimentos se llevaron a cabo estaticamente en sistemas bifasicos, salvo en el caso del etileno-oxido de carbono. La separacion de los copolimeros se llevo a cabo por extraccion mediante disolventes y por precipitacion

  • Cooperative photo-induced effects: from photo-magnetism under continuous irradiation to ultra-fast phenomena - study through optical spectroscopy and X-ray diffraction; Effets photo-induits cooperatifs: du photomagnetisme sous irradiation continue aux phenomenes ultrarapides - etude par spectroscopie optique et diffraction X

    Energy Technology Data Exchange (ETDEWEB)

    Glijer, D

    The control with ultra-short laser pulses of the collective and concerted transformation of molecules driving a macroscopic state switching on an ultra-fast time scale in solid state opens new prospects in materials science. The goal is to realize at the material level what happens at the molecular level in femto-chemistry. These processes are highly cooperative and highly non-linear, leading to self-amplification and self-organization within the material, a so-called photo-induced phase transition with a new long range order (structural, magnetic, ferroelectric,). Two families of molecular compounds have been studied here: first of all, spin transition materials changing from a diamagnetic state over to a paramagnetic state under the effect of temperature or under continuous laser excitation. It concerns photo-active molecular bi-stability prototype materials in solid state, whose switching has been studied during X-ray diffraction, optical reflectivity and magnetism experiments. Then we have studied charge-transfer molecular systems, prototype compounds for ultrafast photo-induced phase transitions: insulator-metal, neutral-ionicAs well as ultrafast optical experiments, time-resolved X ray crystallography is a key technique in order to follow at the atomic level the different steps of the photo-induced transformation and thus to observe the involved mechanisms. We have underlined a process of photo-formation of one-dimensional nano-domains of lattice-relaxed charge-transfer excitations, governing the photo-induced phase transition of the molecular charge-transfer complex TTF-CA by the first time-resolved diffuse scattering measurements. Moreover, a new femtosecond laser-plasma source and a optical pump-probe spectroscopy set-up with a highly sensitive detecting system have been developed in this work. The results presented here will be an illustration of the present scientific challenges existing on the one hand with the development of projects of major

  • Characterization of superconducting thin films deposited by laser ablation. Caracterisation de films minces supraconducteurs deposes par ablation laser

    Energy Technology Data Exchange (ETDEWEB)

    Sentis, M; Delaporte, P [I.M.F.M., 13 - Marseille (FR); Gerri, M; Marine, W [Aix-Marseille-2 Univ., Marseille (FR). Centre Universitaire de Luminy

    Thin films of YBa{sub 2}Cu{sub 3}O{sub 7} are deposited by laser ablation on MgO and YSZ substrates. Deposits by infrared (I.R.) Nd: YAG are non stoechiometric. The films having the best superconductor qualities are deposited by ablation with an excimer U.V. laser ({lambda} = nm). These films are epitaxiated with the c axis perpendicular to the substrate. The film quality depends on the substrate temperature, oxygen pressure and cooling speed.

  • Chronological study of beryllium plasma produced by a laser beam; Etude chronologique du plasma de beryllium cree par le faisceau d'un laser

    Energy Technology Data Exchange (ETDEWEB)

    Langer, Ph; Tonon, G; Durand, Y; Buges, J C [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    We have carried out several investigations (ultrafast cinematography, visible and ultra-violet spectroscopy, interferometry, charged particle detection) on beryllium plasma produced by a ruby laser having a maximum power of 9 x 10{sup 10} watt/cm{sup 2} at the focal point of an objective with a 6,7 cm focal length. The common characteristic of all these investigations is a time resolution which is sufficient to follow changes in the plasma during the entire duration of the laser pulse. The plasma visible from - 60 ns (time zero corresponds to the top of the laser pulse) undergoes an uniform acceleration from - 30 to + 5 nanoseconds; at this moment its velocity reaches a value of 10{sup 7} cm/sec. Be{sup +}, Be{sup 2+} and Be{sup 3+} ions (corresponding to an ionisation potential of eV) are emitted by the plasma as soon as it is formed and have a maximum kinetic energy of eV. The spectroscopic study of the plasma has shown the appearance of recombination lines of ionized beryllium and of lines of excited beryllium at + 70 nanoseconds and + nanoseconds respectively. These lines are still visible after + and + nanoseconds. Interferometric measurements carried out on this plasma have shown that its electronic density is not uniform and decreases rapidly at increasing distance from the target. For example at mm from the surface of the target the density becomes equal to x 10{sup 18} e/cm{sup 3} and x 10{sup 17} e/cm{sup 3} at + 20 and + 40 nanoseconds respectively. (authors) [French] Nous avons effectue plusieurs diagnostics (cinematographie ultra-rapide, spectroscopie dans le visible et dans l'ultraviolet, interferometrie, detection de particules chargees) sur le plasma de beryllium engendre par un laser a rubis delivrent au foyer d'un objectif de distance focale 6,7 cm un eclairement maximum de 9. 10{sup 10} W/cm{sup 2}. La caracteristique commune a tous ces diagnostics est une resolution temporelle suffisante qui nous permet de suivre

  • Folie induite: relato de um caso à margem das classificações atuais

    OpenAIRE

    Cunha,Fernando Toledo da; Ladeira,Rodolfo Braga; Salgado,João Vinícius; Nicolato,Rodrigo

    Na classificação de Gralnick, de , a folie à deux é dividida em quatro subtipos básicos: folie imposée, folie communiquée, folie simultannée e folie induite. O último termo se refere à adição de novas idéias delirantes por paciente previamente psicótico sob influência de outro paciente. Relatamos um caso de folie induite ocorrido entre mãe e filho primariamente psicóticos (transtorno delirante e esquizofrenia, respectivamente), que passaram a compartilhar delírios de natureza persecutória

  • Amplification macroscopique de mouvements nanométriques induitspar des machines moléculaires

    OpenAIRE

    Goujon , Antoine

    The last twenty years have seen tremendous progresses in the design and synthesis of complex molecular machines, often inspired by the beauty of the machinery found in biological systems. However, amplification of the molecular machines motion over several orders of magnitude above their typical length scale is still an ambitious challenge. This work describes how self-organization of molecular machines or motors allows for the synthesis of materials translating the motions of their component

  • Approche numérique de la plasticité induitepar transformation

    African Journals Online (AJOL)

    Key words: Transformation induced plasticity; micromechanical modelling; diffusive transformation; Un essai typique de Taleb et al [19] a résultant de la simulation éléments finis, Processes Modelling and Computer Transformations in Ferrous Alloys : Some. Discrepancies Between Experiments and. Modeling,.

  • Effets plasmoniques induitspar des nanostructures d’argent sur des couches minces de silicium

    OpenAIRE

    MAILHES , Romain

    Thin-film photovoltaics focus on lowering the cost reduction of photovoltaic energy through the significant reduction of raw materials used. In the case of thin-films crystalline silicon, the reduction of the thickness of the cell is linked to a drastic decrease of the absorption, particularly for the higher wavelengths. This decrease of the absorption can be fought through the use of several different light trapping methods, and the use of plasmonic effects induced by metallic nanostructures

  • Approche numérique de la plasticité induitepar transformation

    African Journals Online (AJOL)

    The mechanical phenomenon called TRIP (Transformation Induced Plasticity), corresponding to a permanent strain induced by a phase produite (phase α). Décomposition de la déformation. Le tenseur de déformation totale E tot. , résultant de la simulation éléments finis, est décomposée comme suit : E tot. = E el. +.

  • Equation of state of laser-shocked compressed iron; Equation d'etat du fer comprime par choc laser

    Energy Technology Data Exchange (ETDEWEB)

    Huser, G

    This thesis enters the field of highly compressed materials equation of state studies. In particular, it focuses on the case of laser shock compressed iron. This work indeed aims at getting to the conditions of the earth's core, comprising a solid inner core and a liquid outer core. The understanding of phenomena governing the core's thermodynamics and the geodynamic process requires the knowledge of iron melting line locus around the solid-liquid interface at Mbar. Several experiments were performed to that extent. First, an absolute measurement of iron Hugoniot was obtained. Following is a study of partially released states of iron into a window material: lithium fluoride (LiF). This configuration enables direct access to compressed iron optical properties such as reflectivity and self-emission. Interface velocity measurement is dominated by compressed LiF optical properties and is used as a pressure gauge. Using a dual wavelength reflectivity diagnostic, compressed iron electrical conductivity was estimated and found to be in good agreement with previous results found in geophysics literature. Self-emission diagnostic was used to measure temperature of partially released iron and revealed a solid-liquid phase transition at Mbar pressures. (author)

  • Folie induite: relato de um caso à margem das classificações atuais Folie induite: report of a case outside of the actual classifications

    Directory of Open Access Journals (Sweden)

    Fernando Toledo da Cunha

    Full Text Available Na classificação de Gralnick, de , a folie à deux é dividida em quatro subtipos básicos: folie imposée, folie communiquée, folie simultannée e folie induite. O último termo se refere à adição de novas idéias delirantes por paciente previamente psicótico sob influência de outro paciente. Relatamos um caso de folie induite ocorrido entre mãe e filho primariamente psicóticos (transtorno delirante e esquizofrenia, respectivamente, que passaram a compartilhar delírios de natureza persecutória e sexual. Casos de folie à deux geralmente correspondem ao transtorno psicótico induzido (DSM-IV-TR ou transtorno delirante induzido (CID No entanto, o paciente deste relato não pode receber tais diagnósticos, já que nos critérios validados atualmente percebe-se a exigência de que o parceiro induzido não possua um transtorno psicótico anterior ao início do compartilhamento do delírio. Consideramos que o presente relato exemplifica a insuficiência das modernas classificações nesta área. Casos de folie induite podem necessitar de manejo distinto dos demais casos de psicose compartilhada ou não compartilhada. Sugerimos que os critérios diagnósticos correntes poderiam ser revisados para incluir condições psiquiátricas como bringdadabeer.com the Gralnick classification of the term folie à deux is classically divided into four basic subtypes: folie imposée, folie communiquée, folie simultannée and folie induite. This last one refers to the addiction of new delusions in a previous psychotic patient, under the influence of another patient. We report a case of folie induite that occurred between mother and son, both diagnosed previously with psychotic disorders (delusional disorder and schizophrenia, respectively, who started to share persecutory and sexual delusions. Cases of folie à deux generally correspond to the induced psychotic disorder in the DSM-IV-TR or the induced delusional disorder in the ICD However, our

  • Effet thérapeutique de l’extrait aqueux de Globularia alypum suite à une insulinotoxicité induite in vitro sur les cardiomyocytes de Rattus norvegicus. [Therapeutic effect of aqueous extract of Globularia alypum following in vitro insulin induced toxicity on Rattus norvegicus cardiomyocytes

    Directory of Open Access Journals (Sweden)

    Leila SMAIL

    Full Text Available Introduction. L’insulino‐résistance, marquée par une réaction inflammatoire via la production de TNF‐α et par l’hyperinsulinémie compensatoire, conduit à long terme à l’installation d’une glucolipotoxicité et du diabète de type 2. Objectif. Dans cette étude, les effets d’un extrait aqueux de Globularia alypum (Ga a été analysé in vitro, suite à un stress induit sur le cardiomyocyte de Rattus norvegicus. Matériel et Méthodes. Le stress a été induitpar addition d’une dose élevée d’insuline (10 UI/ mL. Les taux de prolifération ont été déterminés par comptage et les contenus cellulaires en monoxyde d’azote (NO, en malondialdéhyde (MDA et en catalase ont été évalués. Résultats. En présence de la dose élevée d’insuline, les cardiomyocytes ont montré une diminution de la survie cellulaire, un déséquilibre du statut redox en faveur d’une augmentation de NO et de MDA et d’une diminution d’une enzyme du système antioxydant, la catalase. Suite à l’action de l’extrait de Ga, il a été noté une amélioration du taux de prolifération cellulaire, une diminution du taux de No et de MDA ainsi qu’une augmentation de l’activité de la catalase. Conclusion. L’état de stress induit sur le cardiomyocyte par l’insulino‐résistance, mimé par la dose élevée d’insuline, entraîne des altérations physiologiques et biochimiques. Ces dernières, précurseurs de mort cellulaire par apoptose sont atténuées après addition d’un extrait de Globularia alypum, lequel pourrait constituer une cible thérapeutique en aval de l’installation du DT2.


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