Results 91 to 100 of about 8,735,065 (335)

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

Noise-resilient spatial–channel refinement for robust remote photoplethysmography

Frontiers in Bioengineering and Biotechnology
IntroductionRemote photoplethysmography (rPPG) enables non-contact heart rate measurement from facial videos with growing health monitoring applications.
Xianwei Zhang, Feng Qiao, Qiaochu Zang, Zhe Chen, Xiaoting Xie, Siwen Zhao, Sen Lin, Yujun Li   +7 more
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Application of hos for heart rate variability

, 2022
This work is devoted to calculation of higher order spectra (HOS) of ECG signals and comparing of results of standard spectral and statistical methods and HOS methods for heart rate variability (HRV) analysis.
Zhemchuzhkina, T. V., Abdallah, Iren
core  

The ubiquitin system in normal and infected germinal center B cells

FEBS Letters, EarlyView.
The ubiquitin system plays a central role in germinal center (GC) B cells, influencing differentiation to long‐lived memory B cells. Oncogenic gammaherpesviruses gain access to memory B cells by establishing latency in GC B cells. Mapping ubiquitin mechanisms in normal and infected GC B cells will define specific molecular circuits in B cells germane ...
Destiny Davis, Lesly Mejia, Emily K Moser   +2 more
wiley   +1 more source

The role of inhibitory G proteins and regulators of G protein signalling in the in-vivo control of heart rate and predisposition to cardiac arrhythmias [PDF]

, 2012
Inhibitory heterotrimeric G-proteins and the control of heart rate.The activation of cell signalling pathways involving inhibitory heterotrimeric G-proteins acts to slow the heart rate via modulation of ion channels.
Aaisha Opel, Aaisha eOpel, Richard Ang, Richard eAng, Opel, A, Tinker, A, Andrew Tinker, Ang, R, Andrew eTinker   +8 more
core   +1 more source

Novel Fingertip Image-Based Heart Rate Detection Methods for a Smartphone

Sensors, 2017
We hypothesize that our fingertip image-based heart rate detection methods using smartphone reliably detect the heart rhythm and rate of subjects. We propose fingertip curve line movement-based and fingertip image intensity-based detection methods, which
Rifat Zaman, Chae Ho Cho, Konrad Hartmann-Vaccarezza, Tra Nguyen Phan, Gwonchan Yoon, Jo Woon Chong   +5 more
doaj   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Resting Heart Rate and the Risk of Microvascular Complications in Patients With Type 2 Diabetes Mellitus [PDF]

, 2012
Background-—A higher resting heart rate is associated with an increased probability of cardiovascular complications and premature death in patients with type 2 diabetes mellitus.
Williams, B, Woodward, M, Hillis, GS, Arima, H, Chalmers, J, Hata, J, Zoungas, S, Chow, CK, Mancia, G, Perkovic, V, Patel, A, Poulter, NR   +11 more
core   +1 more source

Interpretable Reliability Control for Wearable PPG Heart Rate Estimation

IEEE Access
Wearable photoplethysmography (PPG) can return a plausible heart rate (HR) after motion or poor optical coupling has made the measurement unreliable. We treat HR reporting as a reliability-control problem and introduce an interpretable signal quality ...
Yekun Liang, Shiwei Zhang, Zhou Yang
doaj   +1 more source