Results 81 to 90 of about 1,288,236 (382)

An MRI assessment of mechanisms underlying lesion growth and shrinkage in multiple sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
By applying the tensor model, we analysed lesion orientation and the directionality of lesion expansion/contraction in multiple sclerosis. Each lesion is summarized as an ellipsoid, and the tensor model is applied to calculate lesion anisotropy. From the top to the bottom white matter atlas, surface‐in gradient segmentation and venous atlas used in the
Ermelinda De Meo, Ferran Prados Carrasco, J. William L. Brown, Alasdair J. Coles, Nick G. Cunniffe, Amy E. Jolly, Baris Kanber, Rebecca Samson, Frederik Barkhof, Declan Chard   +9 more
wiley   +1 more source

Re-evaluating the placebo response in recent canine dietary epilepsy trials

BMC Veterinary Research
The placebo response is a common phenomenon. Limited evidence is available about its magnitude in canine epilepsy trials, even though it can significantly influence the efficacy evaluation of new treatments.
Teresa Schmidt, Nina Meyerhoff, Sebastian Meller, Friederike Twele, Marios Charalambous, Benjamin A. Berk, Tsz H. Law, Rowena M. A. Packer, Brian Zanghi, Yuanlong Pan, Andrea Fischer, Holger A. Volk   +11 more
doaj   +1 more source

The hedonic placebo effect of traditional medicines [PDF]

, 2012
To date, the scientific evidence on traditional medicines is scant and under-developed, yet, paradoxically individuals continue to use it and claim high satisfaction levels. What can explain this effect? Using self-collected data from Ghana we argue that
Costa-i-Font, Joan, Sato, Azusa
core  

Paracetamol and the Placebo Effect in Osteoarthritis Trials: A Missing Link? [PDF]

, 2011
This paper addresses the role of paracetamol in placebo-controlled osteoarthritis (OA) trials and the potential contribution to the large placebo response in such trials. Paracetamol is used as rescue medication in nearly all OA placebo-controlled trials.
Zeidler, Henning
core   +3 more sources

Placebo inference on treatment effects when the number of clusters is small [PDF]

, 2018
I introduce a general, Fisher-style randomization testing framework to conduct nearly exact inference about the lack of effect of a binary treatment in the presence of very few, large clusters when the treatment effect is identified across clusters.
arxiv   +1 more source

Shift-Share Designs: Theory and Inference [PDF]

Quarterly Journal of Economics, Volume 134, Issue 4, November 2019, Pages 1949-2010, 2018
We study inference in shift-share regression designs, such as when a regional outcome is regressed on a weighted average of sectoral shocks, using regional sector shares as weights. We conduct a placebo exercise in which we estimate the effect of a shift-share regressor constructed with randomly generated sectoral shocks on actual labor market outcomes
arxiv   +1 more source

If it does not help, it might hurt: Pharmacodynamics of a second IVIg course in Guillain–Barré syndrome

Annals of Clinical and Translational Neurology, EarlyView.
Abstract Objectives Intravenous immunoglobulin (IVIg) is an effective treatment for Guillain–Barré syndrome (GBS), but recovery varies between patients. This study aims to evaluate the pharmacokinetics (PK) and pharmacodynamics (PD) of a single and a second IVIg dose (SID) in patients with GBS.
Sander J. van Tilburg, Ruth Huizinga, Krista Kuitwaard, Sebastiaan D.T. Sassen, Christa Walgaard, Pieter A. van Doorn, Bart C. Jacobs, Birgit C.P Koch   +7 more
wiley   +1 more source

Placebo Effects on Stress, but Not on Pain Reports. A Multi-Experiment Study

Frontiers in Psychology, 2021
BackgroundContextual factors, such as participant/experimenter sex may moderate the placebo effects. We tested whether the participant and experimenter sex modulated placebo effects on experimentally induced pain and associated stress.ObjectiveTo ...
Sara Magelssen Vambheim, Hojjat Daniali, Magne Arve Flaten   +2 more
doaj   +1 more source

Effect of tibolone on breast cancer cell proliferation in postmenopausal ER+ patients: Results from STEM trial [PDF]

, 2007
Purpose: Tibolone is a selective tissue estrogenic activity regulator, approved for the treatment of vasomotor symptoms in postmenopausal women. We have done an exploratory, double-blind, randomized, placebo-controlled pilot trial to investigate the ...
Dowsett, Mitch, Foidart, Jean-Michel, Gomez, Juan V.M. Planellas, Hageluken, Cornelius C. M., Kubista, Ernst, Manikhas, Alexey G., Nechushkin, Michail, Pohlodek, Kamil, Semiglazov, Victor F., Serreyn, Rudolphe, Singer, Christian F.   +10 more
core   +2 more sources

Associations of Cerebrospinal Fluid Orexin‐A, Alzheimer Disease Biomarkers, and Cognitive Performance

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACTObjectiveCerebrospinal fluid (CSF) orexin‐A has been suggested to be a biomarker of Alzheimer disease (AD). In both cognitively unimpaired healthy older adults and individuals with symptomatic AD, CSF orexin‐A is positively associated with CSF Aβ42, p‐tau181, and total tau (t‐tau) concentrations.
Ruijin Lu, Krish Shah, Cristina D. Toedebusch, Ashley Hess, Rachel Richardson, Emmanuel Mignot, Suzanne E. Schindler, Tammie L. S. Benzinger, Shaney Flores, Jason Hassenstab, Chengjie Xiong, John C. Morris, David M. Holtzman, Brendan P. Lucey   +13 more
wiley   +1 more source