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991.
Katharina L. Kopp Ulrik Ralfkiaer Lise Mette R. Gjerdrum Rikke Helvad Ida H. Pedersen Thomas Litman Lars J?nson Peter H. Hagedorn Thorbj?rn Krejsgaard Robert Gniadecki Charlotte M. Bonefeld Lone Skov Carsten Geisler Mariusz A. Wasik Elisabeth Ralfkiaer Niels ?dum Anders Woetmann 《Cell cycle (Georgetown, Tex.)》2013,12(12):1939-1947
992.
Susanne Juhl Pedersen Zheng Zhao Robert GW Lambert Stephanie Wichuk Mikkel ?stergaard Ulrich Weber Walter P Maksymowych 《Arthritis research & therapy》2013,15(6):R216
Introduction
Studies have shown that fat lesions follow resolution of inflammation in the spine of patients with axial spondyloarthritis (SpA). Fat lesions at vertebral corners have also been shown to predict development of new syndesmophytes. Therefore, scoring of fat lesions in the spine may constitute both an important measure of treatment efficacy as well as a surrogate marker for new bone formation. The aim of this study was to develop and validate a new scoring method for fat lesions in the spine, the Fat SpA Spine Score (FASSS), which in contrast to the existing scoring method addresses the localization and phenotypic diversity of fat lesions in patients with axial SpA.Methods
Fat lesions at pre-specified anatomical locations at each vertebral endplate (C2 lower-S1 upper) were assessed dichotomously (present/absent) on spine MRIs. Two readers independently evaluated MRIs obtained at two time points for 58 patients (Exercise 1), followed by optimization of scoring methodology and reader calibration. Thereafter, the same readers read 135 pairs of MRI scans (Exercise 2; including the 58 pairs from exercise 1 randomly mixed with 77 new pairs).Results
In Exercise 2, the mean (SD) baseline FASSS score for the two readers was 22.5(29.6) and 21.1(28.0), respectively, and the FASSS change score was 4.2(10.6) and 6.0(12.2). Inter-reader reliability assessed as intra-class correlation coefficients (ICCs) for status and change scores were excellent (0.96 (95% CI (0.94 to 0.97)) and very good (0.86 (0.80 to 0.90)), respectively. The smallest detectable change (SDC) was 3.7 for the 135 patients. Good reliability of change scores was also observed for MRI scans conducted one year apart (ICC 0.74 (95% CI 0.44 to 0.89) and SDC 4.5). For the 58 MRI-pairs assessed in both exercises, inter-reader reproducibility for the total FASSS status score improved from very good (ICCs: 0.89 (95% CI: 0.81 to 0.93) in exercise 1 to excellent in exercise 2 (0.96 (0.93 to 0.98)), and improved substantially for the total change score (from 0.67 (0.51 to 0.80) to 0.83 (0.73 to 0.90).Conclusions
FASSS meets essential validation criteria for quantification of a common structural abnormality in clinical trials of axial spondyloarthritis. 相似文献993.
Erik Larsen Krzysztof Danel Erik B. Pedersen 《Nucleosides, nucleotides & nucleic acids》2013,32(9-10):1905-1912
Abstract A T?T dimer with ? representing a 2′-OCH2CH2NHC(O)-4′ linkage connecting two nucleoside units was prepared by condensation of (S)-1-[2-(2-aminoethoxy)-3-(4,4′-dimethoxytrityloxy)propyl]thymine with 1,2-dideoxy-1-thyminyl-β-D-erythro-pento-furanuronic acid. The T?T dimer was incorporated in oligodeoxynucleotides and investigated for hybridization to DNA. 相似文献
994.
995.
Nina K. Iversen Henrik Lauridsen Do Thi Thanh Huong Nguyen Van Cong Hans Gesser Rasmus Buchanan Mark Bayley Michael Pedersen Tobias Wang 《Comparative biochemistry and physiology. Part A, Molecular & integrative physiology》2013,164(1):171-180
Monopterus albus, a swamp eel inhabiting the freshwaters of South East Asia, relies on an extensive vascularisation of the buccal cavity, pharynx and anterior oesophagus for gas exchange, while the gills are much reduced. In the present study we describe the macro-circulation in the cephalic region and the vascularisation of the buccal cavity of M. albus using vascular fillings and micro-computed tomography (μCT). We also show that M. albus has the capacity to use the buccal cavity for aquatic gas exchange, being able to maintain normal arterial blood gas composition, blood pressure, heart rate and cardiac output throughout 10 h of forced submergence. M. albus therefore can be characterised as a facultative air-breather. Because M. albus aestivates for many months in moist mud during the dry season we characterised in vivo cardiovascular function during exposure to anoxia as well as the effects of anoxia on in vitro contractility of strip preparations from atria and ventricle. Both studies revealed a low anoxia tolerance, rendering it unlikely that M. albus can survive prolonged exposure to anoxia. 相似文献
996.
997.
998.
Gitte Holmen Olofsson Sara Ram Pedersen Pia Aehnlich Inge Marie Svane Manja Idorn Per thor Straten 《Cytotherapy》2021,23(7):582-589
Human Vγ9Vδ2 T cells are a unique T-cell type, and data from recent studies of Vγ9Vδ2 T cells emphasize their potential relevance to cancer immunotherapy. Vγ9Vδ2 T cells exhibit dual properties since they are both antigen-presenting cells and cytotoxic toward cancer cells. The majority of Vγ9Vδ2 T cells are double-negative for the co-receptors CD4 and CD8, and only 20–30% express CD8. Even though they are mostly neglected, a small fraction of Vγ9Vδ2 T cells also express the co-receptor CD4. Here the authors show that CD4+ Vγ9Vδ2 T cells comprise 0.1–7% of peripheral blood Vγ9Vδ2 T cells. These cells can be expanded in vitro using zoledronic acid, pamidronic acid or CD3 antibodies combined with IL-2 and feeder cells. Unlike most conventional CD4+ αβ T cells, CD4+ Vγ9Vδ2 T cells are potently cytotoxic and can kill cancer cells, which is here shown by the killing of cancer cell lines of different histological origins, including breast cancer, prostate cancer and melanoma cell lines, upon treatment with zoledronic acid. Notably, the killing capacity of CD4+ Vγ9Vδ2 T cells correlates with co-expression of CD56. 相似文献
999.
1000.
Randell AD Cronin JB Keogh JW Gill ND Pedersen MC 《Journal of strength and conditioning research / National Strength & Conditioning Association》2011,25(12):3514-3518
Randell, AD, Cronin, JB, Keogh, JWL, Gill, ND, and Pedersen, MC. Reliability of performance velocity for jump squats under feedback and nonfeedback conditions. J Strength Cond Res 25(12): 3514-3518, 2011-Advancements in the monitoring of kinematic and kinetic variables during resistance training have resulted in the ability to continuously monitor performance and provide feedback during training. If equipment and software can provide reliable instantaneous feedback related to the variable of interest during training, it is thought that this may result in goal-oriented movement tasks that increase the likelihood of transference to on-field performance or at the very least improve the mechanical variable of interest. The purpose of this study was to determine the reliability of performance velocity for jump squats under feedback and nonfeedback conditions over 3 consecutive training sessions. Twenty subjects were randomly allocated to a feedback or nonfeedback group, and each group performed a total of 3 "jump squat" training sessions with the velocity of each repetition measured using a linear position transducer. There was less change in mean velocities between sessions 1-2 and sessions 2-3 (0.07 and 0.02 vs. 0.13 and -0.04 m·s), less random variation (TE = 0.06 and 0.06 vs. 0.10 and 0.07 m·s) and greater consistency (intraclass correlation coefficient = 0.83 and 0.87 vs. 0.53 and 0.74) between sessions for the feedback condition as compared to the nonfeedback condition. It was concluded that there is approximately a 50-50 probability that the provision of feedback was beneficial to the performance in the squat jump over multiple sessions. It is suggested that this has the potential for increasing transference to on-field performance or at the very least improving the mechanical variable of interest. 相似文献