8 research outputs found

    Concentración salival de inmunoglobulina A secretoria según la ingesta de fitoquímicos dietarios

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    OBJETIVO: analizar la influencia de los fitoquímicos (Fq) dietarios sobre la concentración salival de inmunoglobulina A secretoria (IgAs) en personas sanas de diferentes edades.MÉTODOS: se incluyeron 49 personas que fueron agrupadas en: mujeres de 20-39 años (G1; n=12) y de 40-60 años (G2; n=11); hombres de 20-39 años (G3; n=14) y de 40-60 años (G4; n=12). Mediante una encuesta de frecuencia de consumo alimentario cuali-cuantitativo validada se determinó la ingesta habitual de alimentos fuente de Fq -vegetales, frutas frescas y secas, derivados del tomate, cereales y legumbres- y el consumo de los siguientes Fq: antocianos, daidzeína, flavanoles, flavanonas, flavonas, flavonoles, genisteína, isoflavonas, licopeno y polifenoles. La información fue procesada por el programa informático Interfood v.1.3. Se obtuvieron muestras de saliva mixta no estimulada y se determinaron los valores de IgAs por inmunodifusión radial simple. Se compararon las variables según los grupos (prueba de Kruskal Wallis) y se correlacionaron los valores de IgAs con las variables mencionadas (coeficiente de correlación de Spearman) (p<0,05).RESULTADOS: la ingesta total de alimentos fuente de Fq fue menor en G3 que en G1 (p=0,043) y el consumo de frutas frescas fue menor en G3 que en los demás grupos (p=0,002). La ingesta de antocianos fue menor en G3 (p=0,007) y la de flavanonas mayor en G1 (p=0,037), ambos con respecto a los otros grupos. El consumo de flavonas fue superior en G1 que en G3 (p=0,025), y el de polifenoles fue mayor en G1 y G3 con relación a G2 y G4 (p=0,0002). Se halló una correlación negativa entre la ingesta del total de alimentos fuente de Fq y la concentración salival de IgAs en G3 (-0,61; p=0,03), y correlaciones positivas entre el consumo de flavanonas (0,59; p=0,05) y polifenoles (0,62; p=0,04) y los valores de IgAs en G1.CONCLUSIÓN: según estos resultados, el consumo de flavanonas y polifenoles se relaciona con una mayor concentración salival de IgAs en mujeres sanas de 20 a 39 años, en tanto que en hombres de esa edad la ingesta de alimentos fuente de Fq se asocia a una disminución de IgAs salival.Fil: Costantino, Evangelina. Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra de Anatomía B; Argentina.Fil: Costantino, Evangelina. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ciencias de la Salud; Argentina.Fil: Escandriolo Nackauzi, Jorge Dario. Universidad Nacional de Córdoba. Facultad de Odontología. Cátedra de Anatomía B; Argentina.Fil: Escandriolo Nackauzi, Jorge Dario. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Bertolotto, Patricia Isolina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Fil: Heinze, Verónica. Universidad Nacional de Córdoba; Argentina.Fil: Pistoresi, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Bioquímica Clínica e Inmunología; ArgentinaFil: Actis, Adriana Beatríz. Universidad Nacional de Córdoba. Facultad de Odontología. Secretaría de Ciencia y Técnica; Argentina.Fil: Actis, Adriana Beatriz. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ciencias de la Salud; Argentina.Otras Ciencias de la Salu

    Observation of gravitational waves from the coalescence of a 2.5−4.5 M⊙ compact object and a neutron star

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    Search for gravitational-lensing signatures in the full third observing run of the LIGO-Virgo network

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    Gravitational lensing by massive objects along the line of sight to the source causes distortions of gravitational wave-signals; such distortions may reveal information about fundamental physics, cosmology and astrophysics. In this work, we have extended the search for lensing signatures to all binary black hole events from the third observing run of the LIGO--Virgo network. We search for repeated signals from strong lensing by 1) performing targeted searches for subthreshold signals, 2) calculating the degree of overlap amongst the intrinsic parameters and sky location of pairs of signals, 3) comparing the similarities of the spectrograms amongst pairs of signals, and 4) performing dual-signal Bayesian analysis that takes into account selection effects and astrophysical knowledge. We also search for distortions to the gravitational waveform caused by 1) frequency-independent phase shifts in strongly lensed images, and 2) frequency-dependent modulation of the amplitude and phase due to point masses. None of these searches yields significant evidence for lensing. Finally, we use the non-detection of gravitational-wave lensing to constrain the lensing rate based on the latest merger-rate estimates and the fraction of dark matter composed of compact objects

    Search for eccentric black hole coalescences during the third observing run of LIGO and Virgo

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    Despite the growing number of confident binary black hole coalescences observed through gravitational waves so far, the astrophysical origin of these binaries remains uncertain. Orbital eccentricity is one of the clearest tracers of binary formation channels. Identifying binary eccentricity, however, remains challenging due to the limited availability of gravitational waveforms that include effects of eccentricity. Here, we present observational results for a waveform-independent search sensitive to eccentric black hole coalescences, covering the third observing run (O3) of the LIGO and Virgo detectors. We identified no new high-significance candidates beyond those that were already identified with searches focusing on quasi-circular binaries. We determine the sensitivity of our search to high-mass (total mass M&gt;70 M⊙) binaries covering eccentricities up to 0.3 at 15 Hz orbital frequency, and use this to compare model predictions to search results. Assuming all detections are indeed quasi-circular, for our fiducial population model, we place an upper limit for the merger rate density of high-mass binaries with eccentricities 0&lt;e≤0.3 at 0.33 Gpc−3 yr−1 at 90\% confidence level

    Ultralight vector dark matter search using data from the KAGRA O3GK run

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    Among the various candidates for dark matter (DM), ultralight vector DM can be probed by laser interferometric gravitational wave detectors through the measurement of oscillating length changes in the arm cavities. In this context, KAGRA has a unique feature due to differing compositions of its mirrors, enhancing the signal of vector DM in the length change in the auxiliary channels. Here we present the result of a search for U(1)B−L gauge boson DM using the KAGRA data from auxiliary length channels during the first joint observation run together with GEO600. By applying our search pipeline, which takes into account the stochastic nature of ultralight DM, upper bounds on the coupling strength between the U(1)B−L gauge boson and ordinary matter are obtained for a range of DM masses. While our constraints are less stringent than those derived from previous experiments, this study demonstrates the applicability of our method to the lower-mass vector DM search, which is made difficult in this measurement by the short observation time compared to the auto-correlation time scale of DM

    Beef Consumption and Fatty Acids Serum Concentration:Relationship with Salivary Gland Tumors in Córdoba, Argentina

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    Aim: The objective of the present study was toanalyze beef consumption, conjugated linoleic acid (CLA)and n-3 fatty acid (FA) serum concentration and theirrelation to salivary gland tumors (SGT). A questionnaire onnon-nutritional risk factors and a validated food frequencyquestionnaire were applied in 20 SGT and 20 control (Co)patients. Materials and Methods: Food data were processedby the Interfood v.1.3 software. Serum CLA was analyzed bychromatography. Results: Non-significant differences werefound between SGT and Co regarding lean and fatty BC andserum CLA. Serum n-3 linolenic acid concentration washigher in Co than in SGT (p=0.004). No associationsbetween BC and CLA serum concentration were found, but astrong-positive association between total energy intake andtotal fat intake and SGT were observed. A significant inverseassociation between oleic and linoleic FA intake and SGTwas recorded. Conclusion: Serum oleic and linolenic FAsshowed a significant negative association with SGT.Fil: Cittadini, María Cecilia. Universidad Nacional de Cordoba. Facultad de Medicina. Escuela de Nutrición; ArgentinaFil: Cornaglia, Paola. Universidad Nacional de Cordoba. Facultad de Medicina. Escuela de Nutrición; ArgentinaFil: Perovic, Nilda Raquel. Universidad Nacional de Cordoba. Facultad de Medicina. Escuela de Nutrición; ArgentinaFil: Joekes, Silvia. Universidad Nacional de Córdoba. Facultad de Cs.económicas. Instituto de Estadística y Demografia; ArgentinaFil: Heinze, Verónica Mariel. Universidad Adventista del Plata; ArgentinaFil: Bernal, Claudio Adrian. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Actis, Adriana Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Ciencias de la Salud. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud; Argentin

    Beef consumption and fatty acids serum concentration: relationship with salivary gland tumors in Córdoba, Argentina

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    The objective of the present study was to analyze beef consumption, conjugated linoleic acid (CLA) and n-3 fatty acid (FA) serum concentration and their relation to salivary gland tumors (SGT). A questionnaire on non-nutritional risk factors and a validated food frequency questionnaire were applied in 20 SGT and 20 control (Co) patients. Materials and Methods: Food data were processed by the Interfood v.1.3 software. Serum CLA was analyzed by chromatography. Results: Non-significant differences were found between SGT and Co regarding lean and fatty BC and serum CLA. Serum n-3 linolenic acid concentration was higher in Co than in SGT (p=0.004). No associations between BC and CLA serum concentration were found, but a strong-positive association between total energy intake and total fat intake and SGT were observed. A significant inverse association between oleic and linoleic FA intake and SGT was recorded. Conclusion: Serum oleic and linolenic FAs showed a significant negative association with SGT.http://ar.iiarjournals.org/content/34/10/5579.long#sec-3publishedVersionFil: Cittadini, María C. Universidad Nacional de Córdoba. Facultad de Ciencias Médicas. Escuela de Nutrición; Argentina.Fil: Cornaglia, Paola M. Universidad Nacional de Córdoba. Facultad de Ciencias Económicas. Instituto de Estadística y Demografía; Argentina.Fil: Joekes, Silvia. Universidad Nacional de Córdoba. Facultad de Ciencias Económicas. Instituto de Estadística y Demografía; Argentina.Fil: Perovic, Nilda R. Universidad Nacional de Córdoba. Facultad de Ciencias Médicas. Escuela de Nutrición; Argentina.Fil: Heinze, Verónica M. Universidad Adventista del Plata. Facultad de Ciencias de la Salud; Argentina.Fil: Bernal, Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina.Fil: Actis, Adriana B. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ciencias de la Salud; Argentina.Fil: Actis, Adriana B. Universidad Nacional de Córdoba. Facultad de Ciencias Médicas; Argentina.Otras Ciencias de la Salu

    Beef consumption and fatty acids serum concentration: relationship with salivary gland tumors in Córdoba, Argentina

    No full text
    The objective of the present study was to analyze beef consumption, conjugated linoleic acid (CLA) and n-3 fatty acid (FA) serum concentration and their relation to salivary gland tumors (SGT). A questionnaire on non-nutritional risk factors and a validated food frequency questionnaire were applied in 20 SGT and 20 control (Co) patients. Materials and Methods: Food data were processed by the Interfood v.1.3 software. Serum CLA was analyzed by chromatography. Results: Non-significant differences were found between SGT and Co regarding lean and fatty BC and serum CLA. Serum n-3 linolenic acid concentration was higher in Co than in SGT (p=0.004). No associations between BC and CLA serum concentration were found, but a strong-positive association between total energy intake and total fat intake and SGT were observed. A significant inverse association between oleic and linoleic FA intake and SGT was recorded. Conclusion: Serum oleic and linolenic FAs showed a significant negative association with SGT.http://ar.iiarjournals.org/content/34/10/5579.long#sec-3publishedVersionFil: Cittadini, María C. Universidad Nacional de Córdoba. Facultad de Ciencias Médicas. Escuela de Nutrición; Argentina.Fil: Cornaglia, Paola M. Universidad Nacional de Córdoba. Facultad de Ciencias Económicas. Instituto de Estadística y Demografía; Argentina.Fil: Joekes, Silvia. Universidad Nacional de Córdoba. Facultad de Ciencias Económicas. Instituto de Estadística y Demografía; Argentina.Fil: Perovic, Nilda R. Universidad Nacional de Córdoba. Facultad de Ciencias Médicas. Escuela de Nutrición; Argentina.Fil: Heinze, Verónica M. Universidad Adventista del Plata. Facultad de Ciencias de la Salud; Argentina.Fil: Bernal, Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina.Fil: Actis, Adriana B. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ciencias de la Salud; Argentina.Fil: Actis, Adriana B. Universidad Nacional de Córdoba. Facultad de Ciencias Médicas; Argentina.Otras Ciencias de la Salu
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