Results 71 to 80 of about 445,834 (292)

Near-Infrared Cerebrovascular Reactivity for Monitoring Cerebral Autoregulation and Predicting Outcomes in Moderate to Severe Traumatic Brain Injury: Proposal for a Pilot Observational Study

JMIR Research Protocols, 2020
BackgroundImpaired cerebrovascular reactivity after traumatic brain injury (TBI) in adults is emerging as an important prognostic factor, with strong independent association with 6-month outcomes.
Gomez, Alwyn, Dian, Joshua, Froese, Logan, Zeiler, Frederick Adam   +3 more
doaj   +1 more source

Cerebrovascular Reactivity Remains Intact after Cortical Depolarization in Newborn Piglets

, 2023
Cerebrovascular reactivity is severely affected by ischemia, and changes in vascular responses have been reported after cortical spreading depression and head trauma as well.
Busija, David W., Louis, Thomas M., NC DOCKS at East Carolina University, Veltkamp, Roland, Domoki, Ferenc, Bari, Ferenc   +5 more
core  

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

Leveraging Function Intersectionality and Multi-Modal Cerebrovascular Reactivity Measures for the Derivation of Individualized Intracranial Pressure Thresholds in Acute Traumatic Neural Injury

Bioengineering
It has been proposed that subject-specific intracranial pressure (ICP) thresholds can be feasibly derived using the relationship between cerebrovascular reactivity and ICP.
Kevin Y. Stein, Logan Froese, Alwyn Gomez, Amanjyot Singh Sainbhi, Nuray Vakitbilir, Abrar Islam, Tobias Bergmann, Frederick A. Zeiler   +7 more
doaj   +1 more source

Factors affecting the determination of cerebrovascular reactivity

Brain and Behavior, 2014
AbstractBackground and PurposeCerebrovascular reactivity (CVR), measures the ability of the cerebrovasculature to respond to vasoactive stimuli such as CO2. CVR is often expressed as the ratio of cerebral blood flow change to CO2 change. We examine several factors affecting this measurement: blood pressure, stimulus pattern, response analysis and ...
Regan, Rosemary E, Fisher, Joseph A, Duffin, James   +2 more
openaire   +2 more sources

Sildenafil increases cerebrovascular reactivity: A transcranial Doppler study

, 2005
The authors performed a double-blind, placebo-controlled study in 28 patients to evaluate the effects of sildenafil on cerebral hemodynamics. A significant improvement of cerebrovascular reactivity, without any modification of other variables, was ...
Ferrante, F, DIOMEDI, MARINA, Rizzato, B, Spera, E, Leone, G, SPERA, ENRICO, BERNARDI, GIORGIO, Sallustio, F, Diomedi, M, Bernardi, G., Scarfini, M   +10 more
core   +1 more source

Mechanics and composition of middle cerebral arteries from simulated microgravity rats with and without 1-h/d -Gx gravitation [PDF]

, 2014
Background: To elucidate further from the biomechanical aspect whether microgravity-induced cerebral vascular maladaptation might be a contributing factor to postflight orthostatic intolerance and the underlying mechanism accounting for the potential ...
Zhang, Li-Fan, Gao, Fang, Cheng, Jiu-Hua, Li-Fan Zhang, Yun-Gang Bai, Bai, Yun-Gang, Boscolo, Marco, Zhang, Xiang, Marco Boscolo, Fang Gao, Xiao-Feng Huang, Huang, Xiao-Feng, Jiu-Hua Cheng, Xiang Zhang   +13 more
core   +2 more sources

Phosphorylation‐Facilitated CKB Lactylation At K11 By GCN5 Enhances Creatine Kinase Activity and Mitigates Neuronal Damage After Cerebral Ischemia‐Reperfusion

Advanced Science, EarlyView.
This study uncovers hierarchical coordination between K11 lactylation and S199 phosphorylation of CKB in cerebral ischemia‐reperfusion injury. Such dual modifications potentiate CKB enzymatic function, remodel energy metabolism, alleviate oxidative stress and neuronal damage, and represent a viable therapeutic target for stroke treatment.
Chao Duan, Ruolin Zhang, Shihui Ding, Ying Feng, Tao Shen, Ziwei Wang, Wendai Bao, Ke Shui, Jun Qin, Jun Chen, Min Zhang, Zijing Ren, Dongmei Zhao, Xingrong Guo, Zhibing Ai, Xin Yang, Peiyang Zhou, Zhiqiang Dong   +17 more
wiley   +1 more source

Cerebrovascular reactivity mapping using intermittent breath modulation

NeuroImage, 2020
Cerebrovascular reactivity (CVR), an index of brain vessel’s dilatory capacity, is typically measured using hypercapnic gas inhalation or breath-holding as a vasoactive challenge.
Peiying Liu, Cuimei Xu, Zixuan Lin, Sandeepa Sur, Yang Li, Sevil Yasar, Paul Rosenberg, Marilyn Albert, Hanzhang Lu   +8 more
doaj   +1 more source

Cerebrovascular pulsatility index is higher in chronic kidney disease

Physiological Reports, 2023
Patients with chronic kidney disease (CKD) are more likely to die of cardiovascular diseases, including cerebrovascular disease, than to progress to end‐stage kidney disease.
Ester S. Oh, Kaitlin A. Freeberg, Cortney N. Steele, Wei Wang, Heather Farmer‐Bailey, McKinley E. Coppock, Douglas R. Seals, Michel Chonchol, Matthew J. Rossman, Daniel H. Craighead, Kristen L. Nowak   +10 more
doaj   +1 more source