Results 131 to 140 of about 103,155 (374)

Investigation of in vivo measurement of cerebral cytochrome-c-oxidase redox changes using near-infrared spectroscopy in patients with orthostatic hypotension [PDF]

, 2007
We have previously used a continuous four wavelength near infrared spectrometer to measure changes in the cerebral concentrations of oxy- (Δ[HbO2] and deoxy- haemoglobin (Δ[HHb]) during head-up tilt in patients with primary autonomic failure.
Cooper, C.E., Delpy, D.T., Elwell, C.E., Leung, T.S., Smith, M., Tachtsidis, I., Tisdall, M.   +6 more
core  

Transcription factor autoregulation is required for acquisition and maintenance of neuronal identity

Development, 2019
The expression of transcription factors that initiate the specification of a unique cellular identity in multicellular organisms is often maintained throughout the life of the respective cell type via an autoregulatory mechanism.
E. Leyva-Díaz, O. Hobert
semanticscholar   +1 more source

Circular RNAs in Lotus japonicus Responses to Nutrient Supply and Mesorhizobium Symbiosis

Plant, Cell &Environment, EarlyView.
ABSTRACT Symbiotic interactions between legumes and rhizobia enable nitrogen fixation under low nutrient conditions. The establishment and function of symbiotic interactions require coordinated changes in gene expression in both the host and the microbe. Circular RNAs (circRNAs) are endogenous gene‐specific molecules that can regulate transcription and
Delecia Utley, Asa Budnick, Simona Radutoiu, Heike Sederoff   +3 more
wiley   +1 more source

Splicing to keep splicing: A feedback system for cellular homeostasis and state transition

Clinical and Translational Medicine
Background Alternative splicing (AS) plays a crucial role in regulating gene expression and governing proteomic diversity by generating multiple protein isoforms from a single gene. Increasing evidence has highlighted the regulation for pre‐mRNA splicing
Zhonghao Guo, Xurui Zhang, Yachen Li, Yule Chen, Yungang Xu   +4 more
doaj   +1 more source

Correlation of rheoencephalography and laser Doppler flow: a rat study

Journal of Electrical Bioimpedance, 2016
Measuring brain electrical impedance (rheoencephalography) is a potential technique for noninvasive, continuous neuro-monitoring of cerebral blood flow autoregulation in humans.
Bodo Michael, Sheppard Ryan, Hall Aaron, Baruch Martin, Laird Melissa, Tirumala Shravalya, Mahon Richard   +6 more
doaj   +1 more source

Ecological niches and biogeography of nitrogen‐fixing plants in Europe

Plant Biology, EarlyView.
Despite sharing N fixation as a common trait, European legume and actinorhizal plant lineages occupy strikingly divergent ecological niches shaped by their evolutionary histories and physiological adaptations. Advanced symbiont control allows IRLC legumes to expand into northern, mesic regions, while non‐IRLC legumes are more common in Mediterranean ...
N. Fahs, I. Axmanová, J.‐C. Svenning, T. Těšitelová, J. Padullés Cubino, I. Biurrun, J. A. Campos, J. Dengler, E. Garbolino, J. Těšitel   +9 more
wiley   +1 more source

Cerebral Autoregulation in Hypertension and Ischemic Stroke: A Mini Review.

Journal of pharmaceutical sciences and experimental pharmacology, 2017
Aging and chronic hypertension are associated with dysfunction in vascular smooth muscle, endothelial cells, and neurovascular coupling. These dysfunctions induce impaired myogenic response and cerebral autoregulation, which diminish the protection of ...
S. Shekhar, Ruen Liu, Olivia K. Travis, R. Roman, Fan Fan   +4 more
semanticscholar   +1 more source

Feasibility of superimposed supine cycling and lower body negative pressure as an effective means of prolonging exercise tolerance in individuals experiencing persisting post‐concussive symptoms: Preliminary results

Experimental Physiology, EarlyView.
Abstract To examine the feasibility, utility and safety of superimposed lower body negative pressure (LBNP) and tilt during supine cycling in individuals suffering from persisting post‐concussive symptoms (PPCS). Eleven individuals aged 17–31 (6 females/5 males) participated in two randomized separate visits, 1 week apart.
Raelyn Javra, Joel S. Burma, Nathan E. Johnson, Jonathan D. Smirl   +3 more
wiley   +1 more source

trans-activation and autoregulation of gene expression by the immediate-early region 2 gene products of human cytomegalovirus [PDF]

, 1988
Marie C. Pizzorno, Peter O’Hare, Linlin Sha, Robert L. LaFemina, Gary S. Hayward   +4 more
openalex   +1 more source

Effects of the angle of head‐down tilt on dynamic cerebral autoregulation during combined exposure to cephalad fluid shift and mild hypercapnia

Experimental Physiology, EarlyView.
Abstract Astronauts experience combined exposure to a cephalad fluid shift and mild hypercapnia during space missions, potentially contributing to health problems. Such combined exposure may weaken dynamic cerebral autoregulation. The magnitude of cephalad fluid shift varies between individuals, and dynamic cerebral autoregulation may be affected more ...
Tomokazu Kato, Yojiro Ogawa, Ken‐ichi Iwasaki   +2 more
wiley   +1 more source