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Springer S, Lockard B, Baetge C, Jung Y, Levers K, Galvan E, Jagim A, Simbo S, Byrd M, Oliver J, Koozehchian M, Dalton R, Khanna D, Kresta J, Sanchez B, Horrell K, Leopold T, Cho M, Rivera A, Cerda C, Chang C, Rasmussen C, Kreider R. Comparative effectiveness of popular diet programs on changes in android and gynoid body composition in women (LB301). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.lb301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jung Y, Lockard B, Baetge C, Levers K, Galvan E, Jagim A, Simbo S, Byrd M, Oliver J, Koozehchian M, Dalton R, Khanna D, Sanchez B, Kresta J, Horrell K, Leopold T, Cho M, Springer S, Rivera A, Cerda C, Chang C, Rasmussen C, Kreider R. Comparative effectiveness of popular diet programs on changes in body composition and visceral adipose tissue in women (LB297). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.lb297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Coletta A, Mardock M, Lockard B, Byrd M, Simbo S, Jagim A, Kresta J, Baetge C, Jung Y, Koozehchian M, Khanna D, Kyul H, Oliver J, Greenwood M, Rasmussen C, Kreider R. Effects of two popular weight loss programs on changes in body composition and visceral adipose tissue in women (LB296). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.lb296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Miró-Julià C, Escoda-Ferran C, Carrasco E, Moeller JB, Vadekaer DF, Gao X, Paragas N, Oliver J, Holmskov U, Al-Awqati Q, Lozano F. Expression of the innate defense receptor S5D-SRCRB in the urogenital tract. ACTA ACUST UNITED AC 2014; 83:273-85. [DOI: 10.1111/tan.12330] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/28/2014] [Accepted: 02/11/2014] [Indexed: 12/19/2022]
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Thirugnanasothy L, Littlemore J, Oliver J, Close P, West SD. P254 Predicting who needs a humidifier with CPAP. Thorax 2013. [DOI: 10.1136/thoraxjnl-2013-204457.406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Latifi K, Oliver J, Dilling T, Stevens C, DeMarco M, Zhang G, Moros E, Feygelman V. TH-A-137-07: Local Control Differences for SBRT Lung Patients Planned with Pencil Beam Vs. Collapsed Cone Convolution Algorithms. Med Phys 2013. [DOI: 10.1118/1.4815689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Papadopoulos S, Venetis CA, Grimbizis G, Tarlatzis BC, Rustamov O, Krishnan M, Roberts S, Fitzgerald C, Calis PT, Sokmensuer LK, Bozdag G, Fauser B, Oliver J, Loumaye E, Kozachenko I, Adamyan L, Makyan Z. Session 71: Surgery. Hum Reprod 2013. [DOI: 10.1093/humrep/det205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Oliver J, Budzevich M, Zhang G, Latifi K, Kuykendall C, Hoffe S, Montilla-Soler J, Eikman E, Moros E. SU-E-J-203: Texture Analysis of 3D and 4D PET/CT Images of Lung Cancer. Med Phys 2013. [DOI: 10.1118/1.4814415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Lockard B, Baetge C, Levers K, Galvan E, Jagim A, Simbo S, Byrd M, Jung YP, Oliver J, Koozehchian M, Dalton R, Khanna D, Sanchez B, Kresta J, Horrell K, Leopold T, Cho M, Springer S, Rivera A, Cerda C, Rasmussen C, Kreider R. Women who participate in a structured weight loss program with resistance‐exercise experience more favorable changes in body composition when compared to other popular weight loss programs. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.lb341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Budzevich M, Kuykendall C, Latifi K, Oliver J, Dilling T, Hoffe S, Eikman E, Montilla-Soler J, Zhang G, Moros E. A Method to Determine the Optimal Number of Bins in 4D PET. Pract Radiat Oncol 2013; 3:S25. [DOI: 10.1016/j.prro.2013.01.088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Jagim A, Byrd M, Lockard B, Baetge C, Levers K, Galvan E, Simbo S, Jung YP, Oliver J, Koozehchian M, Dalton R, Khanna D, Sanchez B, Kresta J, Horrell K, Leopold T, Cho M, Springer S, Rivera A, Cerda C, Rasmussen C, Kreider R. Adherence to a high protein and low fat energy‐restricted diet while participating in a circuit resistance‐exercise program promotes positive changes in blood glucose and lipids in postmenopausal women. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.lb336] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sia TC, Flack N, Robinson L, Kyloh M, Nicholas SJ, Brookes SJ, Wattchow DA, Dinning P, Oliver J, Spencer NJ. Is serotonin in enteric nerves required for distension-evoked peristalsis and propulsion of content in guinea-pig distal colon? Neuroscience 2013; 240:325-35. [PMID: 23500097 DOI: 10.1016/j.neuroscience.2013.02.061] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 02/26/2013] [Accepted: 02/28/2013] [Indexed: 10/27/2022]
Abstract
Recent studies have shown genetic deletion of the gene that synthesizes 5-HT in enteric neurons (tryptophan hydroxylase-2, Tph-2) leads to a reduction in intestinal transit. However, deletion of the Tph-2 gene also leads to major developmental changes in enteric ganglia, which could also explain changes in intestinal transit. We sought to investigate this further by acutely depleting serotonin from enteric neurons over a 24-h period, without the confounding influences induced by genetic manipulation. Guinea-pigs were injected with reserpine 24h prior to euthanasia. Video-imaging and spatio-temporal mapping was used to record peristalsis evoked by natural fecal pellets, or slow infusion of intraluminal fluid. Immunohistochemical staining for 5-HT was used to detect the presence of serotonin in the myenteric plexus. It was found that endogenous 5-HT was always detected in myenteric ganglia of control animals, but never in guinea-pigs treated with reserpine. Interestingly, peristalsis was still reliably evoked by either intraluminal fluid, or fecal pellets in reserpine-treated animals that also had their entire mucosa and submucosal plexus removed. In these 5-HT depleted animals, there was no change in the frequency of peristalsis or force generated during peristalsis. In control animals, or reserpine treated animals, high concentrations (up to 10 μM) of ondansetron and SDZ-205-557, or granisetron and SDZ-205-557 had no effect on peristalsis. In summary, acute depletion of serotonin from enteric nerves does not prevent distension-evoked peristalsis, nor propulsion of luminal content. Also, we found no evidence that 5-HT3 and 5-HT4 receptor activation is required for peristalsis, or propulsion of contents to occur. Taken together, we suggest that the intrinsic mechanisms that generate peristalsis and entrain propagation along the isolated guinea-pig distal colon are independent of 5-HT in enteric neurons or the mucosa, and do not require the activation of 5-HT3 or 5-HT4 receptors.
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Oliver J, Lee WB, Lee HN. Filters with random transmittance for improving resolution in filter-array-based spectrometers. OPTICS EXPRESS 2013; 21:3969-89. [PMID: 23481932 DOI: 10.1364/oe.21.003969] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
In this paper, we introduce a method for improving the resolution of miniature spectrometers. Our method is based on using filters with random transmittance. Such filters sense fine details of an input signal spectrum, which, when combined with a signal processing algorithm, aid in improving resolution. We also propose an approach for designing filters with random transmittance using optical thin-film technology. We demonstrate that the improvement in resolution is 7-fold when using the filters with random transmittance over what was achieved in our previous work.
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Kallingappa PK, Turner P, Green A, Oliver J, Eichenlaub M, Chibnall A, Wells D, Oback B. 48 QUIESCENCE INDUCES LONG-TERM EPIGENETIC CHANGES IN BOVINE FIBROBLASTS THAT IMPROVE THEIR REPROGRAMMING INTO CLONED ANIMALS. Reprod Fertil Dev 2013. [DOI: 10.1071/rdv25n1ab48] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Cloning by somatic cell nuclear transfer (SCNT) forces cells to lose their lineage-specific epigenetic marks and become totipotent again. This reprogramming process often results in epigenetic and transcriptional aberrations that compromise development. Development rates after SCNT can thus serve as a functional assay for genome-wide epigenetic reprogramming. Dolly the sheep, the first mammalian SCNT clone, was derived from a donor cell that was induced into quiescence by serum starvation. We hypothesized that quiescence alters the epigenetic status of donor cells and elevates their reprogrammability. To test this idea, we compared chromatin composition and cloning efficiency of serum-starved quiescent (G0) bovine adult male fibroblasts versus non-starved, diploid G1 controls. Mechanically synchronized G1 cells were generated by manual selection or mitotic shake-off and processed within 3 h post-mitosis. Based on morphological assessment and 5-ethyl-2′-deoxyuridine (EdU) incorporation during continuous labelling, >93% of cells were captured in G1. Using quantitative confocal immunofluorescence microscopy and fluorometric enzyme-linked immunosorbent assay (ELISA), we show that G0 fibroblasts were significantly hypomethylated at lysines (K) of histone 3 (H3), specifically H3K4me3, H3K9me2, H3K9me3, and H3K27me3, but not H3K9me1. They were also significantly hypoacetylated at H3K9 and H4K5, hyperacetylated at H4K12, and unchanged at H4K16 positions. Furthermore, G0 cells significantly down-regulated the nuclear abundance of RNA polymerase II, histone variant H2A.Z, as well as polycomb group proteins EED, SUZ12, PHC1, and RING2. Following NT into metaphase-arrested oocytes, G0 chromatin condensed slower than that of G1 cells, indicating a more relaxed configuration. After 7 days of in vitro culture, H3K9me3, but not H4K4me3, H3K27me3, SUZ12, and RING2, remained hypomethylated in G0- versus G1-derived NT blastocysts, both in the inner cell mass and trophectoderm (730 v. 550 nuclei from 55 v. 42 G0 v. G1 blastocysts, respectively; n = 7 NT runs). Reduced H3K9me3 levels correlated with significantly increased mRNA abundance of the H3K9me3-specific histone demethylase KDM4B (or JMJD2B) in NT blastocysts. Expression of other pluripotency-related factors (NANOG, SOX2, STELLA, and IIFITM3), imprinted genes (SNRPN), and histone demethylases (KDM4A) was not affected in G0-derived blastocysts (32 G0 v. 55 G1 blastocysts; n = 4). Following NT, G0 donors developed significantly better into cloned blastocysts (175/382 = 46% v. 122/332 = 37% for G0 v. G1, respectively; n = 7, P < 0.05). Likewise, after transfer into surrogate mothers, G0-derived blastocysts developed significantly better into live calves (5/18 = 28% v. 1/25 = 4% for G0 v. G1, respectively; n = 2, P < 0.05). In conclusion, quiescence induced long-term epigenetic changes, specifically H3K9me3 hypomethylation, that correlated with increased donor cell reprogrammability.
This research was supported by FRST C10X0303.
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Oliver J, Mora DF, Huespe AE, Weyler R. A micromorphic model for steel fiber reinforced concrete. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 2012; 49:2990-3007. [PMID: 24049211 DOI: 10.1016/j.ijsolstr.2012.05.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A new formulation to model the mechanical behavior of high performance fiber reinforced cement composites with arbitrarily oriented short fibers is presented. The formulation can be considered as a two scale approach, in which the macroscopic model, at the structural level, takes into account the mesostructural phenomenon associated with the fiber-matrix interface bond/slip process. This phenomenon is contemplated by including, in the macroscopic description, a micromorphic field representing the relative fiber-cement displacement. Then, the theoretical framework, from which the governing equations of the problem are derived, can be assimilated to a specific case of the material multifield theory. The balance equation derived for this model, connecting the micro stresses with the micromorphic forces, has a physical meaning related with the fiber-matrix bond slip mechanism. Differently to previous procedures in the literature, addressed to model fiber reinforced composites, where this equation has been added as an additional independent ingredient of the methodology, in the present approach it arises as a natural result derived from the multifield theory. Every component of the composite is defined with a specific free energy and constitutive relation. The mixture theory is adopted to define the overall free energy of the composite, which is assumed to be homogeneously constituted, in the sense that every infinitesimal volume is occupied by all the components in a proportion given by the corresponding volume fraction. The numerical model is assessed by means of a selected set of experiments that prove the viability of the present approach.
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Luna F, Oliver J, Roca P, Antenucci C. Ontogeny of thermogenesis in pups of the subterranean rodent Ctenomys talarum. Comp Biochem Physiol A Mol Integr Physiol 2012. [DOI: 10.1016/j.cbpa.2012.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Baetge C, Lockard B, Mardock M, Simbo S, Jung Y, Galvan E, Levers K, Byrd M, Koozehchian M, Khanna D, Sanchez B, Jagim A, Oliver J, Kresta J, Horrell K, Leopold T, Cho M, Rasmussen C, Kreider R. Comparison of the efficacy of popular weight loss programs in sedentary overweight women I: body composition and resting energy expenditure. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.lb372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Koozehchian M, Baetge C, Lockard B, Mardock M, Simbo S, Jung Y, Galvan E, Levers K, Byrd M, Khanna D, Sanchez B, Jagim A, Oliver J, Kresta J, Horrell K, Leopold T, Cho M, Rasmussen C, Kreider R. Comparison of the efficacy of popular weight loss programs in sedentary overweight women III: fasting blood lipids and glucose. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.lb381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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69
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Galvan E, Baetge C, Lockard B, Mardock M, Simbo S, Jung Y, Levers K, Byrd M, Koozehchian M, Khanna D, Sanchez B, Jagim A, Oliver J, Kresta J, Horrell K, Leopold T, Cho M, Rasmussen C, Kreider R. Comparison of the efficacy of popular weight loss programs in sedentary overweight women IV: bone, protein & liver status. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.lb383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Khanna D, Baetge C, Lockard B, Mardock M, Simbo S, Jung Y, Byrd M, Koozehchian M, Galvan E, Levers K, Sanchez B, Jagim A, Oliver J, Kresta J, Horrell K, Leopold T, Cho M, Rasmussen C, Kreider R. Comparison of the efficacy of popular weight loss programs in sedentary overweight women VI: quality of life. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.lb407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Levers K, Baetge C, Lockard B, Mardock M, Simbo S, Jung Y, Byrd M, Koozehchian M, Galvan E, Khanna D, Sanchez B, Jagim A, Oliver J, Kresta J, Horrell K, Leopold T, Cho M, Rasmussen C, Kreider R. Comparison of the efficacy of popular weight loss programs in sedentary overweight women V: perception of quality of diets. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.lb404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jung Y, Baetge C, Lockard B, Mardock M, Simbo S, Galvan E, Levers K, Byrd M, Koozehchian M, Khanna D, Sanchez B, Jagim A, Oliver J, Kresta J, Horrell K, Leopold T, Cho M, Rasmussen C, Kreider R. Comparison of the efficacy of popular weight loss programs in sedentary overweight women II: health & fitness markers. FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.lb375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Llosá G, Barrio J, Bisogni M, Cabello J, Del Guerra A, Gillam J, Lacasta C, Oliver J, Rafecas M, Solaz C, Stankova V, Torres-Espallardo I. 221 SILICON PHOTOMULTIPLIERS IN PET AND HADRONTHERAPY APPLICATIONS. Radiother Oncol 2012. [DOI: 10.1016/s0167-8140(12)70190-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Oliver J, Lee W, Park S, Lee HN. Improving resolution of miniature spectrometers by exploiting sparse nature of signals. OPTICS EXPRESS 2012; 20:2613-2625. [PMID: 22330499 DOI: 10.1364/oe.20.002613] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this paper, we present a signal processing approach to improve the resolution of a spectrometer with a fixed number of low-cost, non-ideal filters. We aim to show that the resolution can be improved beyond the limit set by the number of filters by exploiting the sparse nature of a signal spectrum. We consider an underdetermined system of linear equations as a model for signal spectrum estimation. We design a non-negative L1 norm minimization algorithm for solving the system of equations. We demonstrate that the resolution can be improved multiple times by using the proposed algorithm.
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Shah AH, Close P, Oliver J, West SD. P25 A novel cost-saving approach to the sleep clinic non-attenders with CPAP machines. Thorax 2011. [DOI: 10.1136/thoraxjnl-2011-201054c.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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