AI Article Synopsis
Article Abstract
We present a wearable time-domain near infrared spectroscopy (TD-NIRS) system (two wavelengths, one detection channel), which fits in a backpack and performs real-time hemodynamic measurements on the brain and muscle tissues of freely moving subjects. It can provide concentration values of oxygenated hemoglobin (OHb), deoxygenated hemoglobin (HHb), total hemoglobin (tHb = OHb + HHb) and tissue oxygen saturation (StO). The system is battery-operated and can be wirelessly controlled. By following established characterization protocols for performance assessment of diffuse optics instruments, we achieved results comparable with state-of-the-art research-grade TD-NIRS systems. We also performed measurements such as finger tapping (motor cortex monitoring), breath holding (prefrontal cortex monitoring and forearm muscle monitoring), and outdoor bike riding (vastus lateralis muscle monitoring), in order to test the system capabilities in evaluating both muscle and brain hemodynamics.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7587270 | PMC |
| http://dx.doi.org/10.1364/BOE.403327 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Major depressive disorder (MDD) is one of the most common diseases affecting millions of people worldwide. The use of existing antidepressants in many cases does not allow achieving stable remission, probably due to insufficient understanding of pathological mechanisms. This indicates the need for the development of more effective drugs based on in-depth understanding of MDD's pathophysiology.
View Article and Find Full Text PDFHydrogen sulfide-mediated inhibition of ROCK exerts a vasoprotective effecton ischemic brain injury.
Am J Physiol Cell Physiol
December 2024
Department of Pharmacology, School of Basic Medical Sciences, Anhui Medical University, Hefei, China.
As a gas molecule, hydrogen sulfide (HS) exerts neuroprotective effects. Despite its recognized importance, there remains a need for a deeper understanding of HS's impact on vascular smooth muscle cells and its role in ischemic brain injury. This study employs encompassing cultured primary cerebral vascular smooth muscle cells, oxygen-glucose deprivation/reoxygenation model, in vitro vascular tone assessments, in vivo middle cerebral artery occlusion and reperfusion experimentation in male rats, and the utilization of ROCK knockout, to unravel the intricate relationship between H2S and cerebrovascular diastolic function.
View Article and Find Full Text PDFHibernation enhances contractile responses of basilar artery in ground squirrels: The role of rho-kinase and NO.
Comp Biochem Physiol A Mol Integr Physiol
December 2024
Department of Human and Animal Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia; Department of Physiology and Pathology, Faculty of Basic Medicine, M.V. Lomonosov Moscow State University, Moscow, Russia.
Hibernation is accompanied by dramatic decrease of blood flow in many organs due to the increase of their vascular resistances. We compared the responses of mesenteric, renal, and cerebral proximal resistance arteries in summer active (SA) and winter hibernating (WH) ground squirrels and studied the signaling pathways of Rho-kinase and NO. Wire myography and Western blotting were used to assess the arterial responses and protein abundances.
View Article and Find Full Text PDFGlycogenin is dispensable for normal liver glycogen metabolism and body glucose homeostasis.
Int J Biol Macromol
December 2024
Institut Químic de Sarrià (IQS), Universitat Ramon Llull (URL), Barcelona 08017, Spain; Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology, Barcelona 08028, Spain.
Glycogen is a glucose-storage polysaccharide molecule present in animals, fungi and bacteria. The enzyme glycogenin can self-glycosylate, forming an oligosaccharide chain that primes glycogen synthesis. This priming role of glycogenin was first believed to be essential for glycogen synthesis, but glycogen was then found in the skeletal muscle, heart, liver and brain of glycogenin-knockout mice (Gyg KO), thereby showing that glycogen can be synthesized without glycogenin.
View Article and Find Full Text PDFThe intersection of endocrine signaling and neuroimmune communication regulates muscle inflammation-induced nociception in neonatal mice.
Brain Behav Immun
December 2024
Department of Anesthesia, Division of Pain Management, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Pediatric Pain Research Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, OH, United States. Electronic address:
Neonatal pain is a significant clinical issue but the mechanisms by which pain is produced early in life are poorly understood. Our recent work has linked the transcription factor serum response factor downstream of local growth hormone (GH) signaling to incision-related hypersensitivity in neonates. However, it remains unclear if similar mechanisms contribute to inflammatory pain in neonates.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!