Results 71 to 80 of about 102,004 (258)

Effects of Tetrodotoxin on the Mammalian Cardiovascular System

open access: yesMarine Drugs, 2010
The human genome encodes nine functional voltage-gated Na+ channels. Three of them, namely Nav1.5, Nav1.8, and Nav1.9, are resistant to nanomolar concentrations of tetrodotoxin (TTX; IC50 ≥ 1 μM).
Thomas Zimmer
doaj   +1 more source

Relations Between Dispositional Expressivity and Physiological Changes During Acute Positive and Negative Affect [PDF]

open access: yes, 2007
The aim of the present study is to examine the relations between emotional expressivity measured by Berkeley Expressivity Questionnaire and physiological response in situations where positive and negative affects were induced.
Asmir Gračanin   +2 more
core   +2 more sources

Microengineered Gradient Hydrogels for Mechanobiology

open access: yesAdvanced Healthcare Materials, EarlyView.
Gradient hydrogels are used to mimic the mechanical heterogeneity in native tissues, offering powerful in vitro platforms to study cell‐material interactions in diverse pathophysiological contexts. Here, we present a comprehensive review of the design and experimental considerations for stiffness gradient hydrogels, discussing exemplary achievements ...
Shin Wei Chong   +4 more
wiley   +1 more source

The Principle of Similitude in Biology: From Allometry to the Formulation of Dimensionally Homogenous `Laws'

open access: yes, 2019
Meaningful laws of nature must be independent of the units employed to measure the variables. The principle of similitude (Rayleigh 1915) or dimensional homogeneity, states that only commensurable quantities (ones having the same dimension) may be ...
Escala, Andres
core   +1 more source

Longitudinal associations of leptin and adiponectin with heart rate variability in children [PDF]

open access: yes, 2017
For early prevention of cardiovascular disease, early detection and risk factor insights are necessary. The autonomic balance reflects cardiovascular risk and can be measured by heart rate variability (HRV).
Michels, Nathalie, Van De Wielle, Roos
core   +3 more sources

A Data Driven Review of In Vitro Electrical and Mechanical Stimulation for Post‐Acute Phase Wound Healing

open access: yesAdvanced Healthcare Materials, EarlyView.
This review examines how in vitro electrical and mechanical stimulation modulates wound healing in fibroblasts and keratinocytes. Analyzing over 560 experimental data points, we relate stimulation parameters to proliferation and migration outcomes, evaluate platform designs, and highlight the need for multi‐parameter optimization to advance targeted ...
Matthew K. Burgess   +3 more
wiley   +1 more source

Efeitos do intervalo de recuperação entre as séries sobre a pressão arterial após exercícios resistidos Efectos del intervalo de recuperación entre las series sobre la presión arterial luego de ejercicios de resistencia Effects of rest interval between exercise sets on blood pressure after resistance exercises

open access: yesArquivos Brasileiros de Cardiologia, 2010
FUNDAMENTO: Apesar de os estudos demonstrarem a ocorrência da hipotensão pós-exercício (HPE) em exercícios resistidos, ainda não há consenso sobre um protocolo ideal.
João Veloso   +5 more
doaj  

Nonlinear physics of electrical wave propagation in the heart: a review [PDF]

open access: yes, 2016
The beating of the heart is a synchronized contraction of muscle cells (myocytes) that are triggered by a periodic sequence of electrical waves (action potentials) originating in the sino-atrial node and propagating over the atria and the ventricles ...
Alonso Muñoz, Sergio   +2 more
core   +2 more sources

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

open access: yesAdvanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source

Reframing SpO2 tolerance as a physiological switch: implications for hypoxic adaptation and exercise regulation

open access: yesFrontiers in Physiology
Blood oxygen saturation (SpO2) is a widely used oxygenation index in clinical and physiological settings. However, recent phenomena, such as asymptomatic hypoxia in COVID-19 and the superior performance of athletes in high-altitude conditions under ...
Enomoto Yuri   +3 more
doaj   +1 more source

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