13,717 research outputs found

    Effects of Osteopathic Visceral Treatment in Patients with Gastroesophageal Reflux: A Randomized Controlled Trial

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    Osteopathic manual treatment has been recommended as a non-pharmacological therapy for Gastroesophageal Reflux Disease (GERD). However, to date, no study has supported the effectiveness of this intervention with respect to the symptoms of the disease. Our goal was to assess the effect of an osteopathic manual technique for the lower esophageal sphincter on GERD symptoms, cervical mobility and on the C4 spinous process pressure pain threshold (PPTs). Methods: A randomized, double-blind placebo-controlled trial was performed. Sixty subjects suffering from GERD participated in this study and were randomly assigned to either an experimental group (EG) (n = 29), who received the osteopathic technique for the lower esophageal sphincter, or to a control group (CG) (n = 31), who received a manual contact, which mimicked the osteopathic technique without exerting any therapeutic force. Randomization was computer-generated, with allocation concealed by sequentially numbered, opaque, sealed envelopes. The GerdQ questionnaire was used to assess symptom changes the week after intervention. Cervical Range of Motion (CROM) and algometer were used to evaluate cervical mobility and PPTs before and after both treatments. Before-after between groups comparison (t-test) was used for statistical analysis of the outcome, with two measurement points (GerdQ), while repeated-measures ANOVA was used for those outcomes with four measurement points (CROM and PPT). Results: The application of the osteopathic manual treatment in subjects with GERD produced a significant improvement in symptoms one week after the intervention (p = 0.005) with a between-groups difference of 1.49 points in GerdQ score (95% CI: 0.47-2.49). PPT C4 improved in the EG after the treatment (p = 0.034; eta(2) = 0.048) (between-groups difference 8.78 Newton/cm(2); 95% CI: 0.48-17.09). CROM also increased in the EG compared to the CG (p < 0.001; eta(2) = 0.108) (between-groups difference 33.89 degrees; 95% CI: 15.17-52.61). Conclusions: The manual osteopathic technique produces an improvement in GERD symptoms one week after treatment, cervical mobility, and PPTs. This may mean that osteopathic treatment is useful for improving symptoms of GERD

    Warps and correlations with intrinsic parameters of galaxies in the visible and radio

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    From a comparison of the different parameters of warped galaxies in the radio, and especially in the visible, we find that: a) No large galaxy (large mass or radius) has been found to have high amplitude in the warp, and there is no correlation of size/mass with the degree of asymmetry of the warp. b) The disc density and the ratio of dark to luminous mass show an opposing trend: smaller values give more asymmetric warps in the inner radii (optical warps) but show no correlation with the amplitude of the warp; however, in the external radii neither is there any correlation with the asymmetry. c) A third anticorrelation arises from a comparison of the amplitude and degree of asymmetry in the warped galaxies. Hence, it seems that very massive dark matter haloes have nothing to do with the formation of warps but only with the degree of symmetry in the inner radii, and are unrelated to the warp shape for the outermost radii. Denser discs show up the same dependence.Comment: 13 pages, 2 figures, accepted to be published in A&

    Association of VAV2 and VAV3 polymorphisms with cardiovascular risk factors

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    Hypertension, diabetes and obesity are cardiovascular risk factors closely associated to the development of renal and cardiovascular target organ damage. VAV2 and VAV3, members of the VAV family proto-oncogenes, are guanosine nucleotide exchange factors for the Rho and Rac GTPase family, which is related with cardiovascular homeostasis. We have analyzed the relationship between the presence of VAV2 rs602990 and VAV3 rs7528153 polymorphisms with cardiovascular risk factors and target organ damage (heart, vessels and kidney) in 411 subjects. Our results show that being carrier of the T allele in VAV2 rs602990 polymorphism is associated with an increased risk of obesity, reduced levels of ankle-brachial index and diastolic blood pressure and reduced retinal artery caliber. In addition, being carrier of T allele is associated with increased risk of target organ damage in males. On the other hand, being carrier of the T allele in VAV3 rs7528153 polymorphism is associated with a decreased susceptibility of developing a pathologic state composed by the presence of hypertension, diabetes, obesity or cardiovascular damage, and with an increased risk of developing altered basal glycaemia. This is the first report showing an association between VAV2 and VAV3 polymorphisms with cardiovascular risk factors and target organ damage

    Biosynthesis of strychnine

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    The role of a class III gibberellin 2-oxidase in tomato internode elongation

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    [EN] A network of environmental inputs and internal signaling controls plant growth, development and organ elongation. In particular, the growth-promoting hormone gibberellin (GA) has been shown to play a significant role in organ elongation. The use of tomato as a model organism to study elongation presents an opportunity to study the genetic control of internode-specific elongation in a eudicot species with a sympodial growth habit and substantial internodes that can and do respond to external stimuli. To investigate internode elongation, a mutant with an elongated hypocotyl and internodes but wild-type petioles was identified through a forward genetic screen. In addition to stem-specific elongation, this mutant, named tomato internode elongated -1 (tie-1) is more sensitive to the GA biosynthetic inhibitor paclobutrazol and has altered levels of intermediate and bioactive GAs compared with wild-type plants. The mutation responsible for the internode elongation phenotype was mapped to GA2oxidase 7, a class III GA 2-oxidase in the GA biosynthetic pathway, through a bulked segregant analysis and bioinformatic pipeline, and confirmed by transgenic complementation. Furthermore, bacterially expressed recombinant TIE protein was shown to have bona fide GA 2-oxidase activity. These results define a critical role for this gene in internode elongation and are significant because they further the understanding of the role of GA biosynthetic genes in organ-specific elongation.This work used the Vincent J. Coates Genomics Sequencing Laboratory at UC Berkeley, supported by NIH S10 Instrumentation Grants S10RR029668 and S10RR027303. We thank the Tomato Genetics Resource Center for providing seed of the M82 and Heinz cultivars. The material was developed by and/or obtained from the UC Davis/C M Rick Tomato Genetics Resource Center and maintained by the Department of Plant Sciences, University of California, Davis, CA 95616, USA. We thank Anthony Bolger, Alisdair Fernie and Bjorn Usadel for providing us with access to pre-publication genomic reads of the S. lycopersicum cultivar M82, and Cristina Urbez and Noel Blanco-Tourinan (IBMCP, Spain) for technical help with in vitro production of TIE1. This work was supported in part by the Elsie Taylor Stocking Memorial Fellowship awarded to ASL in 2013, by NSF grant IOS-0820854, by USDA National Institute of Food and Agriculture project CA-D-PLB-2465-H, by internal UC Davis funds, and by Spanish Ministry of Economy and Competitiveness grant BFU2016-80621-P.Lavelle, A.; Gath, N.; Devisetty, U.; Carrera Bergua, E.; Lopez Diaz, I.; Blazquez Rodriguez, MA.; Maloof, J. (2018). The role of a class III gibberellin 2-oxidase in tomato internode elongation. The Plant Journal. https://doi.org/10.1111/tpj.14145SAndrés, F., Porri, A., Torti, S., Mateos, J., Romera-Branchat, M., García-Martínez, J. L., … Coupland, G. (2014). SHORT VEGETATIVE PHASE reduces gibberellin biosynthesis at theArabidopsisshoot apex to regulate the floral transition. Proceedings of the National Academy of Sciences, 111(26), E2760-E2769. doi:10.1073/pnas.1409567111Bolger, A., Scossa, F., Bolger, M. E., Lanz, C., Maumus, F., Tohge, T., … Fernie, A. R. (2014). The genome of the stress-tolerant wild tomato species Solanum pennellii. Nature Genetics, 46(9), 1034-1038. doi:10.1038/ng.3046Bowen, M. E., Henke, K., Siegfried, K. R., Warman, M. L., & Harris, M. P. (2011). Efficient Mapping and Cloning of Mutations in Zebrafish by Low-Coverage Whole-Genome Sequencing. Genetics, 190(3), 1017-1024. doi:10.1534/genetics.111.136069Burset, M. (2000). Analysis of canonical and non-canonical splice sites in mammalian genomes. Nucleic Acids Research, 28(21), 4364-4375. doi:10.1093/nar/28.21.4364Chen, W., Yao, J., Chu, L., Yuan, Z., Li, Y., & Zhang, Y. (2015). Genetic mapping of the nulliplex-branch gene (gb_nb1) in cotton using next-generation sequencing. Theoretical and Applied Genetics, 128(3), 539-547. doi:10.1007/s00122-014-2452-2Cingolani, P., Platts, A., Wang, L. L., Coon, M., Nguyen, T., Wang, L., … Ruden, D. M. (2012). A program for annotating and predicting the effects of single nucleotide polymorphisms, SnpEff. Fly, 6(2), 80-92. doi:10.4161/fly.19695Cuperus, J. T., Montgomery, T. A., Fahlgren, N., Burke, R. T., Townsend, T., Sullivan, C. M., & Carrington, J. C. (2009). Identification of MIR390a precursor processing-defective mutants in Arabidopsis by direct genome sequencing. Proceedings of the National Academy of Sciences, 107(1), 466-471. doi:10.1073/pnas.0913203107Curtis, M. D., & Grossniklaus, U. (2003). A Gateway Cloning Vector Set for High-Throughput Functional Analysis of Genes in Planta. Plant Physiology, 133(2), 462-469. doi:10.1104/pp.103.027979Devisetty, U. K., Covington, M. F., Tat, A. V., Lekkala, S., & Maloof, J. N. (2014). Polymorphism Identification and Improved Genome Annotation ofBrassica rapaThrough Deep RNA Sequencing. G3&amp;#58; Genes|Genomes|Genetics, 4(11), 2065-2078. doi:10.1534/g3.114.012526Eckardt, N. A. (2007). GA Perception and Signal Transduction: Molecular Interactions of the GA Receptor GID1 with GA and the DELLA Protein SLR1 in Rice. The Plant Cell, 19(7), 2095-2097. doi:10.1105/tpc.107.054916Ernst, H. A., Lo Leggio, L., Willemoës, M., Leonard, G., Blum, P., & Larsen, S. (2006). Structure of the Sulfolobus solfataricus α-Glucosidase: Implications for Domain Conservation and Substrate Recognition in GH31. Journal of Molecular Biology, 358(4), 1106-1124. doi:10.1016/j.jmb.2006.02.056Fillatti, J. J., Kiser, J., Rose, R., & Comai, L. (1987). Efficient Transfer of a Glyphosate Tolerance Gene into Tomato Using a Binary Agrobacterium Tumefaciens Vector. Nature Biotechnology, 5(7), 726-730. doi:10.1038/nbt0787-726Garrison , E. Marth , G. 2012 Haplotype-based variant detection from short-read sequencingHedden, P., & Graebe, J. E. (1985). Inhibition of gibberellin biosynthesis by paclobutrazol in cell-free homogenates ofCucurbita maxima endosperm andMalus pumila embryos. Journal of Plant Growth Regulation, 4(1-4), 111-122. doi:10.1007/bf02266949Kimura, S., & Sinha, N. (2008). Tomato (Solanum lycopersicum): A Model Fruit-Bearing Crop. Cold Spring Harbor Protocols, 2008(12), pdb.emo105-pdb.emo105. doi:10.1101/pdb.emo105Koenig, D., Jimenez-Gomez, J. M., Kimura, S., Fulop, D., Chitwood, D. H., Headland, L. R., … Maloof, J. N. (2013). Comparative transcriptomics reveals patterns of selection in domesticated and wild tomato. Proceedings of the National Academy of Sciences, 110(28), E2655-E2662. doi:10.1073/pnas.1309606110Li, H., & Durbin, R. (2009). Fast and accurate short read alignment with Burrows-Wheeler transform. Bioinformatics, 25(14), 1754-1760. doi:10.1093/bioinformatics/btp324Li, H., Handsaker, B., Wysoker, A., Fennell, T., Ruan, J., … Homer, N. (2009). The Sequence Alignment/Map format and SAMtools. Bioinformatics, 25(16), 2078-2079. doi:10.1093/bioinformatics/btp352Li, J., Sima, W., Ouyang, B., Wang, T., Ziaf, K., Luo, Z., … Ye, Z. (2012). Tomato SlDREB gene restricts leaf expansion and internode elongation by downregulating key genes for gibberellin biosynthesis. Journal of Experimental Botany, 63(18), 6407-6420. doi:10.1093/jxb/ers295Lorrain, S., & Fankhauser, C. (2012). Plant Development: Should I Stop or Should I Grow? Current Biology, 22(16), R645-R647. doi:10.1016/j.cub.2012.06.054Menda, N., Semel, Y., Peled, D., Eshed, Y., & Zamir, D. (2004). In silicoscreening of a saturated mutation library of tomato. The Plant Journal, 38(5), 861-872. doi:10.1111/j.1365-313x.2004.02088.xMichelmore, R. W., Paran, I., & Kesseli, R. V. (1991). Identification of markers linked to disease-resistance genes by bulked segregant analysis: a rapid method to detect markers in specific genomic regions by using segregating populations. Proceedings of the National Academy of Sciences, 88(21), 9828-9832. doi:10.1073/pnas.88.21.9828Pimenta Lange, M. J., Liebrandt, A., Arnold, L., Chmielewska, S.-M., Felsberger, A., Freier, E., … Lange, T. (2013). Functional characterization of gibberellin oxidases from cucumber, Cucumis sativus L. Phytochemistry, 90, 62-69. doi:10.1016/j.phytochem.2013.02.006Raskin, I., & Kende, H. (1984). Role of Gibberellin in the Growth Response of Submerged Deep Water Rice. Plant Physiology, 76(4), 947-950. doi:10.1104/pp.76.4.947Reinecke, D. M., Wickramarathna, A. D., Ozga, J. A., Kurepin, L. V., Jin, A. L., Good, A. G., & Pharis, R. P. (2013). Gibberellin 3-oxidase Gene Expression Patterns Influence Gibberellin Biosynthesis, Growth, and Development in Pea. PLANT PHYSIOLOGY, 163(2), 929-945. doi:10.1104/pp.113.225987Robinson, M. D., & Oshlack, A. (2010). A scaling normalization method for differential expression analysis of RNA-seq data. Genome Biology, 11(3), R25. doi:10.1186/gb-2010-11-3-r25Robinson, M. D., McCarthy, D. J., & Smyth, G. K. (2009). edgeR: a Bioconductor package for differential expression analysis of digital gene expression data. Bioinformatics, 26(1), 139-140. doi:10.1093/bioinformatics/btp616Robinson, J. T., Thorvaldsdóttir, H., Winckler, W., Guttman, M., Lander, E. S., Getz, G., & Mesirov, J. P. (2011). Integrative genomics viewer. Nature Biotechnology, 29(1), 24-26. doi:10.1038/nbt.1754Schneeberger, K., Ossowski, S., Lanz, C., Juul, T., Petersen, A. H., Nielsen, K. L., … Andersen, S. U. (2009). SHOREmap: simultaneous mapping and mutation identification by deep sequencing. Nature Methods, 6(8), 550-551. doi:10.1038/nmeth0809-550Schneider, C. A., Rasband, W. S., & Eliceiri, K. W. (2012). NIH Image to ImageJ: 25 years of image analysis. Nature Methods, 9(7), 671-675. doi:10.1038/nmeth.2089Schomburg, F. M., Bizzell, C. M., Lee, D. J., Zeevaart, J. A. D., & Amasino, R. M. (2002). Overexpression of a Novel Class of Gibberellin 2-Oxidases Decreases Gibberellin Levels and Creates Dwarf Plants. The Plant Cell, 15(1), 151-163. doi:10.1105/tpc.005975Seo, M., Jikumaru, Y., & Kamiya, Y. (2011). Profiling of Hormones and Related Metabolites in Seed Dormancy and Germination Studies. Methods in Molecular Biology, 99-111. doi:10.1007/978-1-61779-231-1_7Sun, T. (2011). The Molecular Mechanism and Evolution of the GA–GID1–DELLA Signaling Module in Plants. Current Biology, 21(9), R338-R345. doi:10.1016/j.cub.2011.02.036Sun, T., & Gubler, F. (2004). MOLECULAR MECHANISM OF GIBBERELLIN SIGNALING IN PLANTS. Annual Review of Plant Biology, 55(1), 197-223. doi:10.1146/annurev.arplant.55.031903.141753Thorvaldsdottir, H., Robinson, J. T., & Mesirov, J. P. (2012). Integrative Genomics Viewer (IGV): high-performance genomics data visualization and exploration. Briefings in Bioinformatics, 14(2), 178-192. doi:10.1093/bib/bbs017(2012). The tomato genome sequence provides insights into fleshy fruit evolution. Nature, 485(7400), 635-641. doi:10.1038/nature11119Trapnell, C., Pachter, L., & Salzberg, S. L. (2009). TopHat: discovering splice junctions with RNA-Seq. Bioinformatics, 25(9), 1105-1111. doi:10.1093/bioinformatics/btp120Trapnell, C., Roberts, A., Goff, L., Pertea, G., Kim, D., Kelley, D. R., … Pachter, L. (2012). Differential gene and transcript expression analysis of RNA-seq experiments with TopHat and Cufflinks. Nature Protocols, 7(3), 562-578. doi:10.1038/nprot.2012.016Tsai, H., Howell, T., Nitcher, R., Missirian, V., Watson, B., Ngo, K. J., … Comai, L. (2011). Discovery of Rare Mutations in Populations: TILLING by Sequencing. Plant Physiology, 156(3), 1257-1268. doi:10.1104/pp.110.169748Ueguchi-Tanaka, M., Nakajima, M., Katoh, E., Ohmiya, H., Asano, K., Saji, S., … Matsuoka, M. (2007). Molecular Interactions of a Soluble Gibberellin Receptor, GID1, with a Rice DELLA Protein, SLR1, and Gibberellin. The Plant Cell, 19(7), 2140-2155. doi:10.1105/tpc.106.043729Wickham, H. (2016). ggplot2. Use R! doi:10.1007/978-3-319-24277-4Winter, D., Vinegar, B., Nahal, H., Ammar, R., Wilson, G. V., & Provart, N. J. (2007). An «Electronic Fluorescent Pictograph» Browser for Exploring and Analyzing Large-Scale Biological Data Sets. PLoS ONE, 2(8), e718. doi:10.1371/journal.pone.0000718Xu, H., Liu, Q., Yao, T., & Fu, X. (2014). Shedding light on integrative GA signaling. Current Opinion in Plant Biology, 21, 89-95. doi:10.1016/j.pbi.2014.06.010Yamaguchi, S. (2008). Gibberellin Metabolism and its Regulation. Annual Review of Plant Biology, 59(1), 225-251. doi:10.1146/annurev.arplant.59.032607.09280

    Near-Infrared Polarimetric Adaptive Optics Observations of NGC 1068: A torus created by a hydromagnetic outflow wind

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    We present J' and K' imaging linear polarimetric adaptive optics observations of NGC 1068 using MMT-Pol on the 6.5-m MMT. These observations allow us to study the torus from a magnetohydrodynamical (MHD) framework. In a 0.5" (30 pc) aperture at K', we find that polarisation arising from the passage of radiation from the inner edge of the torus through magnetically aligned dust grains in the clumps is the dominant polarisation mechanism, with an intrinsic polarisation of 7.0%±\pm2.2%. This result yields a torus magnetic field strength in the range of 4−-82 mG through paramagnetic alignment, and 139−20+11^{+11}_{-20} mG through the Chandrasekhar-Fermi method. The measured position angle (P.A.) of polarisation at K′' is found to be similar to the P.A. of the obscuring dusty component at few parsec scales using infrared interferometric techniques. We show that the constant component of the magnetic field is responsible for the alignment of the dust grains, and aligned with the torus axis onto the plane of the sky. Adopting this magnetic field configuration and the physical conditions of the clumps in the MHD outflow wind model, we estimate a mass outflow rate ≤\le0.17 M⊙_{\odot} yr−1^{-1} at 0.4 pc from the central engine for those clumps showing near-infrared dichroism. The models used were able to create the torus in a timescale of ≥\geq105^{5} yr with a rotational velocity of ≤\leq1228 km s−1^{-1} at 0.4 pc. We conclude that the evolution, morphology and kinematics of the torus in NGC 1068 can be explained within a MHD framework.Comment: 14 pages, 4 figures, Accepted by MNRA
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