Results 131 to 140 of about 31,642 (278)

Quantifying skin microvascular function responses to distinct forms of heat stress in humans using optical coherence tomography

Experimental Physiology, EarlyView.
Abstract Optical coherence tomography (OCT) enables visualization and quantification of the cutaneous microvasculature, yet no study has compared responses to distinct forms of heating in humans. We hypothesized that local skin heating (LH) would evoke larger responses in microvascular diameter, velocity, flow and density than passive whole‐body ...
Kristanti W. Wigati, Robert A. McLaughlin, Harrison T. Caddy, Howard H. Carter, Louise H. Naylor, Daniel J. Green   +5 more
wiley   +1 more source

Evaluación de amplitud y frecuencia mediante el acondicionamiento del pulso pletismográfico y posterior extracción oximétrica – fase 2

Ciencia e Ingeniería, 2019
La señal pletismográfica permite cuantificar los cambios del volumen de sangre bajo parámetros de vasoconstricción y vasodilatación del diámetro venoso, para detectar posibles anomalías relacionadas con patologías pulmonares y sanguíneas. Por lo anterior,
N. Olarte López, J. Sánchez Ramírez, C. Orrego Muñoz, G. Echeverry Vásquez   +3 more
doaj  

Long‐term adverse cardiovascular changes induced by cocoa shell extract administration through lactation in fetal undernourished and control rats

Experimental Physiology, EarlyView.
Abstract Cocoa shell extract (CSE; rich in antioxidant compounds) administered to adult hypertensive rats exposed to fetal undernutrition (MUN) reduces blood pressure, improving cardiovascular alterations. We aimed to explore lactation as a reprogramming window, evaluating the long‐term effects of CSE supplementation during this period. MUN and control
Santiago Ruvira, Pilar Rodríguez‐Rodríguez, Metee Iampanichakul, Begoña Quintana‐Villamandos, Dolores Morales, David Ramiro‐Cortijo, Silvia M. Arribas   +6 more
wiley   +1 more source

Design of electrodes for pulse volume measurement/impedance plethysmography [PDF]

, 2000
This paper will provide information about research for the development of medical electrodes to be used with a plethysmography device. The research included the consideration of human factors, manufacturability, electrical characteristics and ease of use
Ermi, Frances S., Marks, Lloyd
core  

Sex‐specific differences in mortality and neurocardiac interactions in the Kv1.1 knockout mouse model of sudden unexpected death in epilepsy (SUDEP)

The Journal of Physiology, EarlyView.
Abstract figure legend The Kcna1 knockout mouse model of sudden unexpected death in epilepsy (SUDEP) exhibits sex‐specific differences in SUDEP risk. Female mice exhibit a lower SUDEP risk than males, despite similar seizure characteristics and interictal cardiac function across sexes.
Kelsey Paulhus, Praveen Kumar, Kelly Kneale, T. Noah Hutson, Nicole M. Gautier‐Hall, Deng‐Shan Shiau, Megan Watts, Krystle Trosclair, Hemangini A. Dhaibar, Paari Dominic, Leonidas Iasemidis, Edward Glasscock   +11 more
wiley   +1 more source

A Novel Technique for the Measurement of Chest Wall Kinematics Using Low Cost Stretch Sensors

Sukkur IBA Journal of Emerging Technologies
Measurement of breathing patterns and thoracoabdominal movement (chest wall kinematics) is essential in studying patients with chronic obstructive pulmonary diseases (COPD), patients with neuromuscular diseases, critical patients in intensive care units
Atiqa Saleem, Zainab Ali, Rida Nisar, Muhammad Usman Raja   +3 more
doaj   +1 more source

TMEM16A channel signalling microdomains in the regulation of vascular function

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic representation of TMEM16A channel signalling microdomains. Calcium influx or calcium release from the endoplasmic/sarcoplasmic reticulum (ER/SR) activates TMEM16A channels through interactions with regulatory proteins in vascular smooth muscle cells or endothelial cells. TMEM16A channel activation drives chloride efflux,
Fênix Araujo, Swapnil K. Sonkusare
wiley   +1 more source

Breathing irregularities and postnatal hypoxaemia in an experimental model of essential hypertension

The Journal of Physiology, EarlyView.
Abstract figure legend Neonatal spontaneously hypertensive rats (SHRs) exhibit inherent respiratory dysfunction in early life, including oscillatory breathing patterns and apnoeic events that cause oxygen desaturation and brain hypoxia, in addition to an impaired hypoxic ventilatory response.
Beatriz N. Vieira, Letícia R. Mendes, Sarah G. Mariano, Isabela P. Leirão, Emilson D. Pereira‐Junior, Milede H. Saraiva Paes, Pedro L. Katayama, Daniel B. Zoccal   +7 more
wiley   +1 more source

Mechanisms reducing parasympathetic activity in chronic hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Parasympathetic activity is reduced in chronic hypoxia, but the underlying mechanism(s) are unclear. Using β‐adrenergic blockade to isolate parasympathetic control of heart rate at sea level and after 9‐12 days at high altitude, we investigated whether (i) chemoreflex activation, (ii) increased pulmonary ventilation and/or (iii ...
Lauren E. Maier, Andrew Douglas, Katharine Foster, Elliott J. Jenkins, Liam D. Corr, Peter Rasmussen, James Anholm, Travis D. Gibbons, Phil N. Ainslie, Mike Stembridge, Christoph Siebenmann   +10 more
wiley   +1 more source

The detection of impedance plethysmography informativeness determining leg arterial circulatory disorders in diabetic patients [PDF]

, 2016
Diabetes causes many complications and deaths worldwide, yet there are no optimal non-invasive diagnostic techniques that would be reliable to identify peripheral artery disease (PAD) and limb ischemia in diabetic patients.
Ptašinskas, Tomas
core