Results 171 to 180 of about 291,532 (299)

Heart Rate Variability Series is the Output of a non-Chaotic System driven by Dynamical Noise [PDF]

arXiv
Heart rate variability (HRV) series reflects the dynamical variation of heartbeat-to-heartbeat intervals in time and is one of the outputs of the cardiovascular system. Over the years, this system has been recognized for generating nonlinear and complex heartbeat dynamics, with the latter referring to a high sensitivity to small -- theoretically ...
arxiv  

Human Cervix Chip: A Preclinical Model for Studying the Role of the Cervical Mucosa and Microbiome in Female Reproductive Health

BioEssays, EarlyView.
The microfluidic Cervix Chip is an in vitro model of the human cervix lined by cervical epithelium interfaced with stromal cells cultured under dynamic flow that represents a new preclinical platform for studying mucosal immunity, host‐microbiome interactions, infections, fertility, and pregnancy health.
Zohreh Izadifar, Anna Stejskalova, Aakanksha Gulati, Ola Gutzeit, Donald E. Ingber   +4 more
wiley   +1 more source

Non-Invasive Arterial Pulse Detection with Millimeter-wave Radar and Comparison With Photoplethysmography [PDF]

arXiv
Cardiovascular diseases remain a leading cause of mortality and disability. The convenient measurement of cardiovascular health using smart systems is therefore a key enabler to foster accurate and early detection and diagnosis of cardiovascular diseases and it require accessing a correct pulse morphology similar to arterial pressure wave.
arxiv  

The contribution of extracellular RNA and its derived biomaterials in disease management

BMEMat, EarlyView.
The implications of exRNA's biological function and the structural uniqueness of RNA help establish a close connection between RNA, material, and modern medicine. Abstract The RNA found in the circular system is known as extracellular RNA (exRNA). This kind of RNA has been found to play a biological role similar to that of a messenger. They can be used
Yu Wei, Zhangyi Wang, Zixuan Qin, Qianqian Wan, Yutao Li, Franklin R. Tay, Chenyu Wang, Tong Zhang, Lina Niu   +8 more
wiley   +1 more source

Life sciences accomplishments [PDF]

From its inception, the main charter of Life Sciences has been to define biomedical requirements for the design and development of spacecraft systems and to participate in NASA's scientific exploration of the universe.

core   +1 more source

Unveiling the complexity of cellular senescence in cancers: From mechanism to therapeutic opportunities

BMEMat, EarlyView.
This review highlights the complex roles of cellular senescence in cancer progression and suppression, discusses the mechanisms and regulatory pathways involved, and evaluates the efficacy of the “One‐Two punch” sequential treatment approach while addressing emerging challenges in this novel therapeutic strategy.
Qiuming Pan, Ye Zhu, Zhi Ye, Huayang Zhang, Junxi Wang, Guozhong Yi, Zhiyong Li, Rongyang Xu, Luyao Wang, Zhenzhen Wu, Songtao Qi, Guanglong Huang, Shanqiang Qu   +12 more
wiley   +1 more source

Cardiovascular instrumentation for spaceflight [PDF]

The observation mechanisms dealing with pressure, flow, morphology, temperature, etc. are discussed. The approach taken in the performance of this study was to (1) review ground and space-flight data on cardiovascular function, including earlier related ...
Ganiaris, N. J., Polhemus, J. T., Schappell, R. T.   +2 more
core   +1 more source

Predictive Information Decomposition as a Tool to Quantify Emergent Dynamical Behaviors In Physiological Networks [PDF]

arXiv
Objective: This work introduces a framework for multivariate time series analysis aimed at detecting and quantifying collective emerging behaviors in the dynamics of physiological networks. Methods: Given a network system mapped by a vector random process, we compute the predictive information (PI) between the present and past network states and ...
arxiv  

Aminated graphene nanosheet stimulates the maturation of hiPSCs‐derived cardiomyocytes in vitro and enhances their survival in vivo

BMEMat, EarlyView.
Aminated graphene (G‐NH2) niche matrix plays a pivotal role in precisely manipulating cardiac differentiation and maturation of hiPSCs. The molecular mechanism underlying cardiomyocyte maturation is closely linked to the PDGF‐β signaling pathway. Cardiomyocytes derived from the G‐NH2 matrix exhibit enhanced activity and functionality in vivo.
Yin Xu, Xvdong Wang, Zihao Wang, Qi Chen, Donghui Zhang, Nianguo Dong, Jianglin Wang   +6 more
wiley   +1 more source

STRESS AND HEART

ARYA Atherosclerosis, 2010
Background: Human beings throughout the world are faced with high and ever increasing levels of acute or chronic stress. Acute stress is defined as “the normal short-term physiological response to the perception of major threat or demands&rdquo ...
HamidReza Roohafza
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