Results 81 to 90 of about 28,046 (293)

A Superlubricated Magnetically Steerable Microcatheter with Integrated Optical and Fluidic Channels

Advanced Robotics Research, EarlyView.
A magnetically steerable microcatheter with integrated optical and fluidic channels is developed for multifunctional navigation in tortuous anatomical environments. A surface‐grafted hydrogel coating enables low‐friction actuation. The device demonstrates stable light and fluid delivery during magnetic manipulation, offering a compact platform for ...
Yuntian Du, Ruokun He, Luqi Li, Hesheng Wang, Zhuo‐Chen Ma, Bing Han   +5 more
wiley   +1 more source

Cortical specificity in neurovascular coupling

Journal of Neurophysiology, 2015
Despite mounting contrary evidence, the metabolic hypothesis is viewed as the predominant theory underlying neurovascular coupling, or the link between neural activity and cerebral blood flow. In a recent study, Huo et al. (Huo BX, Smith JB, Drew PJ.
openaire   +4 more sources

Advances in the study of neurovascular coupling in bone repair

Shanghai Jiaotong Daxue xuebao. Yixue ban
Bone repair is a complex physiological process. The nerves within the bone can regulate bone tissue regeneration through the secretion of bioactive factors and interactions with cells within the bone. Recent studies have sought to leverage the principles
HE Shuhang, GUO Shangchun, TAO Shicong
doaj   +1 more source

Neurovascular Uncoupling Is Linked to Microcirculatory Dysfunction in Regions Outside the Ischemic Core Following Ischemic Stroke

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023
Background Normal brain function depends on the ability of the vasculature to increase blood flow to regions with high metabolic demands. Impaired neurovascular coupling, such as the local hyperemic response to neuronal activity, may contribute to poor ...
Christian Staehr, John T. Giblin, Eugenio Gutiérrez‐Jiménez, Halvor Ø. Guldbrandsen, Jianbo Tang, Shaun L. Sandow, David A. Boas, Vladimir V. Matchkov   +7 more
doaj   +1 more source

Multidisciplinary Consideration of Potential Pathophysiologic Mechanisms of Paradoxical Erythema with Topical Brimonidine Therapy. [PDF]

, 2016
Rosacea is a chronic inflammatory disease with transient and non-transient redness as key characteristics. Brimonidine is a selective α2-adrenergic receptor (AR) agonist approved for persistent facial erythema of rosacea based on significant efficacy and
Detmar, Michael, Di Nardo, Anna, Docherty, James R, Holmes, Anna, Lorton, Dianne, Schäfer, Gregor, Steinhoff, Martin   +6 more
core   +2 more sources

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

Advanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou, Zhiqiang Chen, Yuanbiao Ma, Zhiqiang Tang, Qianqian Wang   +4 more
wiley   +1 more source

Age-Dependent Impairment of Neurovascular and Neurometabolic Coupling in the Hippocampus

Frontiers in Physiology, 2018
Neurovascular and neurometabolic coupling are critical and complex processes underlying brain function. Perturbations in the regulation of these processes are, likely, early dysfunctional alterations in pathological brain aging and age-related ...
Cátia F. Lourenço, Ana Ledo, Miguel Caetano, Rui M. Barbosa, Rui M. Barbosa, João Laranjinha, João Laranjinha   +6 more
doaj   +1 more source

Time-delayed feedback in neurosystems

, 2008
The influence of time delay in systems of two coupled excitable neurons is studied in the framework of the FitzHugh-Nagumo model. Time-delay can occur in the coupling between neurons or in a self-feedback loop.
Dahlem, M. A., Hiller, G., Hoevel, P., Schoell, E.   +3 more
core   +1 more source

A Nanoparticle‐Integrated Complete Manufacturing Pipeline of Chemically Engineered Exosomes

Advanced Science, EarlyView.
We report a novel manufacture technology of chemically engineered exosomes. The four steps of manufacturing, i.e., biogenesis, loading, isolation, and storage, are integrated by the use of a nanoparticle. The manufacture technology incorporates three innovative components, i.e., a new nano‐bio effect, a new composite nanoparticle, and a new isolation ...
Xiaowei Wen, Zixing Xu, Zerun Hao, Yanming Chen, Kai Xie, Haofan Yin, Xueying Wang, Jie Min, Sihan Sun, Baiding Chen, Chengxiu Ling, Mingming Xu, Yizhao Chen, Gang Ruan   +13 more
wiley   +1 more source

Modeling the relationship between neuronal activity and the BOLD signal: contributions from astrocyte calcium dynamics

Scientific Reports, 2023
Functional magnetic resonance imaging relies on the coupling between neuronal and vascular activity, but the mechanisms behind this coupling are still under discussion.
Federico Tesler, Marja-Leena Linne, Alain Destexhe   +2 more
doaj   +1 more source