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Atrial Transcriptional Profiles of Molecular Targets Mediating Electrophysiological Function in Aging and Pgc-1 β Deficient Murine Hearts
Conclusion: These findings limit the possible roles of gene transcriptional changes in previously reported age-dependent pro-arrhythmic electrophysiologial changes observed in Pgc-1β-/- atria to an altered Ca2+-ATPase (Atp2a2) expression. This directly parallels previously reported arrhythmic mechanism associated with p21-activated kinase type 1 deficiency. This could add to contributions from the direct physiological outcomes of mitochondrial dysfunction, whether through reactive oxygen species (ROS) production or altered Ca2+ homeostasis. Introduction Atrial arrhythmias constitute a major public health pro...
Source: Frontiers in Physiology - April 23, 2019 Category: Physiology Source Type: research

Asymptomatic Carotid Stenosis Is Associated With Circadian and Other Variability in Embolus Detection
Conclusions: Embolism associated with asymptomatic carotid stenosis shows circadian variation with highest rates 4–6 h before midday. This corresponds with peak circadian incidence of stroke and other vascular complications. These and ASED Study results show that monitoring frequency, duration, and time of day are important in ES detection. Introduction Transcranial Doppler (TCD) detected microembolism in the ipsilateral middle cerebral artery (MCA) may help stratify the risk of stroke and other arterial disease complications in persons with advanced (≥60%) asymptomatic carotid stenosis. If so, this t...
Source: Frontiers in Neurology - April 15, 2019 Category: Neurology Source Type: research

Using wearable devices in clinical trials
Brandy Chittester, chief of clinical operations, IMARC Globally, more than 325 million people own wearable, connected devices, and more than 2.5 billion own smartphones. Using wearable devices in clinical trials can bring huge benefits, however, there are also concerns. Here’s a look at how researchers are using wearable devices — and what you should consider before using them in your own research. How wearable devices are advancing medicine Right now, ClinicalTrials.gov, a global database of clinical trials, lists nearly 200 trials with “wearable devices” or “wearable technology” in the description. This in...
Source: Mass Device - March 12, 2019 Category: Medical Devices Authors: Danielle Kirsh Tags: Blog IMARC Source Type: news