The aim of this project was to develop a methodology to introduce wireless video capsule endoscopy in preclinical research. Five mature female pigs (Sus scrofa domestica) were selected for the study. Capsule endoscopes (the EndoCapsule system; Olympus) were introduced into the duodenum endoscopically in each of the animals. The life span of batteries (i.e., total time of endoscopy recording) was 487-540 min (median 492 min). The capsule endoscope reached the cecum during enteroscopy once (after 7 h 57 min), in the remaining cases, endoscopy recordings terminated in the distal or terminal ileum. All capsule enteroscopies found a normal pattern of the small intestine. The intestinal lumen is narrower, transverse folds are sparse or even absent, villi are wider but less prominent in pigs compared to humans. Capsule endoscopy in experimental pigs will be helpful for future trials on injury of different drugs and xenobiotics to the small bowel.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2822909 | PMC |
http://dx.doi.org/10.1007/s10620-009-0779-3 | DOI Listing |
Alzheimers Dement
December 2024
Oregon Health & Science University, Portland, OR, USA.
Background: Conducting research remotely in aging and Alzheimer's disease related (ADRD) populations using multiple passive sensing technologies (e.g., activity watches, electronic pillboxes, bed-mats, wall-mounted sensors) provides opportunities for greater inclusiveness and more ecologically valid data capture.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
North Bristol NHS Trust, Bristol, United Kingdom.
Background: Poor sleep is associated with neurodegenerative diseases underlying dementia and mild cognitive impairment (MCI), including Alzheimer's disease (AD) and Lewy body disease (LBD). Performing assessments within clinical or laboratory settings may influence validity, however feasibility of home sleep and memory assessments in this population is currently undetermined. This study aimed to identify whether remote home-based sleep and memory research including wearable technology was feasible in older adults with MCI and dementia.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Oregon Health & Science University, Portland, OR, USA.
Background: Conducting research remotely in aging and Alzheimer's disease related (ADRD) populations using multiple passive sensing technologies (e.g., activity watches, electronic pillboxes, bed-mats, wall-mounted sensors) provides opportunities for greater inclusiveness and more ecologically valid data capture.
View Article and Find Full Text PDFMicromachines (Basel)
December 2024
Purple Mountain Laboratories, Nanjing 211111, China.
The millimeter-wave wireless transmission system is widely regarded as a promising solution for applications of future 6G communication. This paper presents an experimental comparison between all-optical and all-electric receivers for millimeter-wave communication systems over a 15 m wireless link and demonstrates 200 m and 2 km real-time uncompressed HD video transmission using an all-optical transceiver at 100 GHz. The systems leverage photonics-assisted heterodyne beating techniques at the transmitter, while the receivers employ either an avalanche photodiode (APD)-based all-optical approach or an envelope detection-based all-electric approach.
View Article and Find Full Text PDFInfant Behav Dev
December 2024
Department of Psychology, the University of Texas at Austin, Austin, TX 78712, United States.
Physical contact between infants and caregivers is crucial for attachment development. Previous research shows that skin-to-skin contact after birth and frequent baby wearing in the first year predict secure attachment at 12-months. This relationship is thought to be mediated by the activation of infants' parasympathetic nervous system through caregiver touch.
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